CN101569995B - Tool holder for a rotating tool and method for clamping a rotating tool in tool holder - Google Patents
Tool holder for a rotating tool and method for clamping a rotating tool in tool holder Download PDFInfo
- Publication number
- CN101569995B CN101569995B CN2009101325955A CN200910132595A CN101569995B CN 101569995 B CN101569995 B CN 101569995B CN 2009101325955 A CN2009101325955 A CN 2009101325955A CN 200910132595 A CN200910132595 A CN 200910132595A CN 101569995 B CN101569995 B CN 101569995B
- Authority
- CN
- China
- Prior art keywords
- tool holder
- sleeve
- clamping
- housing parts
- sleeve part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Gripping On Spindles (AREA)
Abstract
The present invention relates to a tool holder (1), the housing section (5) of which comprises clamping means (9), provided concentrically with a rotational axis (7) of the tool holder (1) and defining a housing opening (13). The clamping means (9) can be radially adjusted between a release position and a clamping position, in which the clamping means (9) exert a radial compression seating force on a hilt (15) in the clamping position. The clamping means (9) are provided with a clamping surface (17), which makes a surface contact with the outer circumferential surface (19) of the hilt (15) in the clamping position. The region of the tool holder (1) forming the clamping surface (17) comprises a plurality of groove parts, which, viewed in the direction of the rotational axis, are connected in one piece, forming support regions at an axial separation from each other, projecting towards the rotational axis (7), the peak surfaces (27) of which, facing the rotational axis, form the cylindrical clamping surface.
Description
The application is that application number is dividing an application of 200580025089.6 application for a patent for invention.The international filing date of original application is on June 14th, 2005, and denomination of invention is " tool holder of throw ".
Technical field
The method that the present invention relates to a kind of tool holder of throw and be used for throw is clamped in tool holder.
Background technology
In order to clamp the instrument of rotation, for example drill bit or milling cutter etc. utilize various tool holders in practice, its with interference fit radially fixedly the clamping device of the handle of a knife of throw have a small maximum displacement.Be related to such rule, the accuracy and the proper alignment precision of small tool anchor clamps is high more more promptly to clamp displacement.Like this, the precision spring dop has the clamping displacement of a few millimeter, and other accurate chuck, hydraulic pressure breathing chuck or have mechanism's chuck of the clamping device of ring seal for example, the tool holder that particularly shrinks the dop type constitute to make can directly clamp the throw that only has a unique handle of a knife nominal diameter in tool holder.
Utilizing above-mentioned tool holder can reach sufficiently high being press-fitted makes a concerted effort.But show that excite the vibration in cutting face of the rotation of instrument, it stays flutter vestige etc. in the sectional view of the workpiece of processing.The accessible feed speed of this restriction lathe.
Also show, throw, it enough is installed on when friction is moved in the tool holder securely, begins to move axially in tool holder and on-stream may getting loose from tool holder when producing vibration.
Summary of the invention
The purpose of this invention is to provide a kind of tool holder about first aspect, it stops moving axially of throw in the operation process better than prior art.The objective of the invention is about second aspect, it suppresses the vibration that excited by throw better than prior art.
The present invention is from a kind of tool holder, its clamping part comprises that clamping device that the rotation that is concentric with tool holder is provided with is in order to the fixing handle of a knife of throw, it determines the accommodation hole of a handle of a knife, wherein clamping device is used to insert or take out between the radially enlarged disengaged position of handle of a knife and the clamped position and can moves radially one, make a concerted effort in sealed fixing being press-fitted that handle of a knife is rubbed on its cylindrical external peripheral surface that the clamped position clamping device applies handle of a knife radially, and wherein for clamping device disposes the clamping surface with cylindrical outer shape, it is close to the external peripheral surface of handle of a knife contiguously at the clamped position face.As described in starting, such tool holder is as the precision instrument anchor clamps, and it is known for example shrinking the dop pattern.
Be according to improvement of the present invention, the zone that the formation of tool holder clamps has a plurality of slot parts that keep axial spacing each other around the rotation bending, direction along rotation is seen, described slot part be limited to mutually combine between them be integral, keep a plurality of support regions axial spacing setting, that protrude to rotation over there each other, described support region constitute cylindrical clamping surface to rotation top surface over there.
The top surface of each support region is complied with a cylindrical outer shape and overall size and is specified to and makes and can make a concerted effort to transmit the needed torque of running by being press-fitted of clamping device.But because each support region since each slot part from but axially freely, compare with the zone of the formation area supported of traditional tool holder be within the specific limits axial elasticity and can eliminate and suppress of the flexural vibrations of the clamping part of tool holder with respect to the handle of a knife of throw.The tendency that tool handle shifts out accommodation hole is significantly reduced.
Each slot part meets the destination and constitutes around the helicla flute of rotation bending or by a plurality of cannelures around rotation that keep axial spacing to be provided with each other by at least one.If relate to cannelure, then produce a rotational symmetric support region structure, it is characterized in that extra high axial restraint power.Annular helical line generation support region by means of one or more axial intersecting dislocation can be made according to the mode of screw chasing process especially simply.If cut two reverse helicla flutes, then also reach a rotational symmetric support region structure in this situation.
Above-mentioned helicla flute or cannelure produce spirality or the annular support region that centers on the lath-shaped of rotation.But in a scheme, also can set, the zone of the formation clamping surface of tool holder has a plurality of support regions that keep spacing to be provided with in all directions each other, its form for separate in all directions each other by each slot part but the projection that mutually combines and be integral, it once more constitutes cylindrical clamping surface to the top surface that rotation protrudes over there.Be different from above-mentioned form of implementation, can influence better by each projection tool holder the formation clamping surface the zone radially or axial elastic characteristic.
When each support region when clamping surface limits by at least two group slot parts; Can make the projection of above-mentioned pattern more simply; For example each slot part of first group can be by at least one around the helicla flute of rotation bending and each slot part of second group is in reverse at least one helicla flute of first group by at least one or the helicla flute around the rotation bending with at least one the spiral fluted gradient that is different from each group consists of or/and keep each other cannelure that axial spacing arranges or/and consist of by a plurality of circumferencial directions along clamping surface axially extended grooves that arrange that distribute by a plurality of around rotations for each slot part of each group spaced apart extension abreast and non-intersect in clamping surface wherein, and each slot part of different groups intersects so that constitute each support region in clamping surface.. Can make helicla flute, cannelure or axial groove more simply by means of lathe.But in a scheme, also can set, each slot part of first group keeps the cannelures of axial spacing setting by a plurality of each other around rotation, and each slot part of second group constitutes by at least one helicla flute around the rotation bending or/and constitute by a plurality of axially extended grooves that are provided with along the circumferencial directions distribution of clamping surface.
Axial longitudinal section towards clamping part sees, the top surface of each support region meets the destination with each the groove side surface in the axial sides adjacency of top surface and complies with a rectangular profile and become a parallelogram profile or a trapezoidal shape.At least one groove side surface of the support region of a plurality of vicinities, particularly two groove side surfaces meet the destination and extend perpendicular to rotation; But one or two groove side surface also can have cone shape.Can change the damping property of support region structure by the suitable selection at inclination angle.
If two conical groove side surfaces dwindle in the same way gradually to the direction of rotation, then form the support region that tilts to extend with respect to rotation, being press-fitted of the outside motion that is used for handle of a knife that they strengthen applying on pad when each groove side surface dwindles gradually away from throw made a concerted effort.Meet the two groups of support regions that respectively are provided with a plurality of axial vicinities in destination, its each conical tank side surface dwindles in the same way gradually, and simultaneously each the conical tank side surface in two groups oppositely dwindles gradually.Stop pad moving axially when the tool holder flexural vibrations in this case particularly well.It is especially true when each conical tank side surface of two groups dwindle mutually in opposite directions gradually.
With respect between each contiguous spiral fluted groove circle or the damping property and the inertia of the tool handle that in tool holder, clamps of the width influence of at least one spiral fluted width of the width of the top surface between each contiguous cannelure or each cannelure.The width of preferred helicla flute or cannelure is less than the width of the top surface of the support region that keeps therebetween.Well width is more little, and is big more for transmitting the try hard to keep clamping surface that stays of interference fit.The width of opposite top surface influences the damping behavior of support region with the inclination angle of groove side surface.Prove that also the degree of depth of at least one spiral fluted radial depth or each cannelure meets the width of destination greater than spiral fluted width or cannelure, so as to guarantee support region for the enough axial elasticities of damping behavior.
For example the slot part that constitutes by helicla flute, cannelure or axial groove can open wide to accommodation hole over there.But each slot part is at least on the part of its longitudinal extension length in a preferred form of implementation, but on its total length, fill up basically especially one with the different material of material in the zone of the formation clamping surface of tool holder.This filler can be used for different purposes.For example this filler is used for the sealing of fluid tight especially in helicla flute or axial groove.But this filler also can fully be used for improving vibration damping or its and can also be for example shrink under the situation of tool holder of dop type one and provide heat insulation for pad in contraction process.This filler can comprise plastics or pottery or metal.
Each slot part that for example constitutes helicla flute or cannelure can be directly molded in the material of clamping part of tool holder.They can be directly molded in the housing parts of the heat-swellable that constitutes the accommodation hole that holds handle of a knife under the situation of the tool holder of a contraction clip head dummy.But proved that also meeting purpose is, with support region structure or supporting member shaping structures in one may be independent the sleeve of radial elastic in, in the accommodation hole of itself insertion tool anchor clamps and its radially being press-fitted of clamping device with tool holder make a concerted effort to pass to instrument.One such sleeve can be used as diameter compensation sleeve, also can be used for other less handle of a knife diameter even only be specified to the tool holder that is used to clamp unique handle of a knife nominal diameter by means of this sleeve one.Also can be easy to reach the clamping displacement of maximum especially at next the such sleeve of situation that shrinks the tool holder of dop type.In such form of implementation, meet destination setting, each slot part that for example constitutes helicla flute or cannelure is arranged in the inner circumferential surface of the columniform clamping surface of formation of sleeve of the handle of a knife that holds throw of a radial elastic, and clamping device has another clamping surface that can move radially of determining accommodation hole between disengaged position and clamped position, wherein the disengaged position of clamping device sleeve can be embedded in the accommodation hole on the one hand or from wherein taking out or/and handle of a knife can be embedded on the other hand the sleeve or from wherein taking out, and radially being press-fitted of clamping device made a concerted effort to pass to handle of a knife at the clamped position sleeve.In sleeve, can relate to an independent member that can from tool holder, take out; To illustrate also that as following sleeve can also be fixedly connected on tool holder or be integral moulding thereon.
Sleeve preferably has at least one axially extended compensation slit, but preferred a plurality of such compensation slit that along the circumferential direction distributes, so that obtain enough elastic characteristics radially and weaken as few as possible by being press-fitted of applying of clamping device and make a concerted effort.Can relate to each axially extended groove in the slit or radially pass the axial opening of sleeve in compensation.Especially each groove can be set at inner circumferential surface but also on external peripheral surface not only, so that reach good especially elastic characteristic radially by the indentation cross-sectional structure of such formation.
Precision instrument anchor clamps, the clamping displacement of particularly shrinking the tool holder of dop type are prerequisite with the handle of a knife diameter that keeps narrow tolerance limit usually.Even in order when using diameter compensation sleeve, also can to make full use of the clamping displacement as well as possiblely, in a preferred form of implementation, set, sleeve comprises inner sleeve and the outer sleeve that is provided with one heart mutually, wherein outer sleeve has a conical inner surface, and inner sleeve has the inner surface of cylindrical structure that the conical external surface and of the conical inner surface of being close to outer sleeve constitutes the clamping surface of sleeve, and its internal diameter can move to axial mutually by inner sleeve and outer sleeve and change till clamping surface abuts on the handle of a knife.The external diameter that one such sleeve allows to eliminate pad is poor with the diameter between the nominal bore diameter of tool holder, and the diameter tolerance that compensates pad.At first two-piece collar is shifted onto on the pad and for this reason and be fixed on the pad with certain clamping engagement with respect to moving of outer sleeve by inner sleeve.But this clamping force also needn't have for transmitting the needed size of running torque, because the clamping device of following by tool holder applies essential being press-fitted with joint efforts via sleeve to pad for this reason.Under the situation of two-piece collar, also the compensation slit that constitutes each axially extended groove or opening can be arranged at least on the inner sleeve, preferably also be arranged on the outer sleeve so that improvement elastic characteristic radially.
The external peripheral surface of sleeve can have cylindrical outer shape.But being can be with quill to being positioned definitely in the tool holder, this has importance especially under the situation of the tool holder of the contraction dop type that also suffers axial thermal expansion, can set according to a preferred form of implementation, another clamping surface of above-mentioned clamping device is constituted conical inner surface and sleeve has the conical external surface of being close to this conical inner surface, it dwindles to throw direction over there to rotation gradually corresponding to conical inner surface.On the axially side away from throw in the zone of its clamping surface, quill is to being bearing on the tool holder.From disengaged position during to the clamped position transition clamping device move the sleeve automatic axial to for example bearing-surface that constitutes axial shoulder block of tool holder.
Shrink under the situation of tool holder of dop type one, in order to constitute clamping device, tool holder can have one and can change disengaged position over to and can change the housing parts of conical inner surface clamped position, that constitute another clamping surface over to by cooling by heating, the clamping surface that it constitutes around the conical external surface of sleeve and at the inner circumferential surface by sleeve axially be fixedly connected on tool holder on the side away from throw.One such housing parts not only produces radially to be press-fitted makes a concerted effort, and also produces axial force when cooling, its radially sleeve is loaded according to the mode of collet on the one hand and on the other hand with quill to pressing to its bearing-surface.Can reach the high while accurate localization of making a concerted effort that is press-fitted by means of such tool holder.
Particularly importantly such form of implementation, wherein housing parts axially away from a side of throw have one axially stretch out the clamping surface that constitutes other the zone, surround the extension of tool holder and/or sleeve with radial spacing, the end of described extension is fixedly connected on tool holder.From the transition position of disengaged position to clamped position, the sleeve part of axial shrinkage is shortened and is produced the axial clamping force of permanent action to the sleeve, and it suppresses the vibration, the particularly flexural vibrations that produce in the running.Vibration damping action is with the combination that is particularly related to the sealed and sealed clamping of shape of the friction of sleeve part on the conical excircle of sleeve.
Also particularly advantageous is such improvement, and wherein housing parts is made of a kind of material, its thermal coefficient of expansion greater than sleeve or/and tool holder by the thermal coefficient of expansion of housing parts area surrounded.The thermal expansion ability of the sleeve part of improving strengthens the clamping displacement of tool holder on the one hand and improves at clamped position on the other hand is the required axial clamping force of vibration damping.
In order to change tool holder over to disengaged position, can only in the zone of sleeve, heat housing parts; But also can open displacement so that increase with it along its total length heating.Proved advantageously, sleeve its end away from throw be fixedly connected on tool holder and for change over to disengaged position with housing parts basically only in its extension heating.The tool holder of traditional contraction dop type is eddy-current heating for example in the zone of the clamping surface of clamping tool handle usually.Must assurance only heat housing parts for this reason, but heating tool handle simultaneously not, otherwise be difficult to the taking-up instrument.Otherwise, if thereby only in the zone of extension and outside the clamping surface of setting tool handle is axial, heat housing parts, then be not difficult to the clamping action that takes out.
The tool holder of the contraction dop type of above-mentioned pattern, wherein the housing parts by a tool holder has the sleeve part of conical external surface by being press-fitted clamping tool handle with joint efforts via a sleeve or, also have independently invention importance, and do not rely on the sleeve of being close to pad or whether the cylindrical clamping surface of sleeve part is divided into each supporting member or support region by a helicla flute or each cannelure.Important at first is, housing parts surrounds a sleeve part that is concentric with accommodation hole rotation, axially mounting on tool holder, radial elastic, the handle of a knife that constitutes throw, its inner circumferential surface constitutes a clamping surface so that being press-fitted of housing parts made a concerted effort to pass to handle of a knife and housing parts has a conical inner surface, and the sleeve part has a conical external surface, it dwindles to throw on the direction of rotation over there gradually, and wherein conical inner surface is close to conical external surface at clamped position.Housing parts here on axial side, have away from throw one axially stretch out the sleeve part clamping surface the zone, with radial spacing around tool holder or/and the extension of sleeve part, the end regions of described extension is fixedly connected on tool holder.Selectively or can also additionally set, housing parts is made of a kind of material, and its thermal coefficient of expansion is greater than the thermal coefficient of expansion by the housing parts area surrounded of sleeve part and/or tool holder.The zone of preferably also only heating the extension of housing parts as mentioned above in this tool holder is so that the extracting tool anchor clamps.
Description of drawings
Below illustrate in greater detail various embodiments of the present invention by accompanying drawing.Wherein:
The tool holder that Fig. 1 one shrinks the dop type comprises the axial profilograph of a supporting member structure of the present invention;
Fig. 2 tool holder comprises the axial profilograph of first scheme of supporting member structure;
Fig. 3 tool anchor clamps comprise the axial profilograph of the alternative plan of supporting member structure;
Fig. 4 tool holder comprises that one constitutes the axial profilograph of the sleeve of supporting member structure;
The axial view of the sleeve of the tool holder among Fig. 5 Fig. 4;
Fig. 6 tool holder comprises the axial profilograph of a scheme of the sleeve that comprises the supporting member structure;
The axial profilograph of a scheme of the tool holder among Fig. 7 Fig. 6;
The axial profilograph of a scheme of the tool holder among Fig. 8 Fig. 7;
The axial view of the sleeve that Fig. 9 comprises in the tool holder by Fig. 8;
The tool holder that Figure 10 one shrinks the dop type comprises the axial profilograph of diameter compensation sleeve;
Figure 11 one tool holder comprises the axial profilograph of third party's case of supporting member structure;
Figure 12 one tool holder comprises the axial profilograph that a scheme of the supporting member structure of Figure 11 is looked along Figure 13 center line XII-XII;
The axial view of the tool holder among Figure 13 Figure 12;
Figure 14 one tool holder comprises the axial profilograph of the cubic case of supporting member structure;
Figure 15 one tool holder comprises the axial profilograph of a scheme of the supporting member structure among Figure 14.
The specific embodiment
Fig. 1 illustrates the tool holder 1 of a contraction dop type, and it comprises a bonding part 3, and here it is the form of a hollow handle tapering (HSK), is used for engaging regularly in its axial end rotation with the working-spindle of a lathe; And the clamping part 5 at its axial other end.The rotation of tool holder 1 is with 7 expressions.Bonding part 3 can have any shape, that is also can have the form of steep tapering etc.Clamping part 5 has the basic configuration of a shell 9, its cylindrical tool handle 15 that ends at an end face 11 that extends perpendicular to rotation 7 and comprise throw, for example milling cutter or boring that a columniform accommodation hole 13, that is concentric with rotation 7 is not shown specifically embeds in the described accommodation hole replaceably in mode that subsequently also will more detailed theory.For Fig. 1 for the purpose of clear is illustrated in the pad 15 that embeds before the accommodation hole 13, it is fixed in the accommodation hole 13 with the interference fit friction by the inner circumferential surface that constitutes a clamping surface 17 by shell 9 radially sealedly.
The external diameter of the external peripheral surface of pad 15 is a bit larger tham the internal diameter of clamping surface 17.In heating during clamping part 5, for example by means of the constriction device of the induction of a pattern of describing in WO 01/,897 58 A1, accommodation hole 13 expand into and makes and pad 15 can be inserted in the accommodation hole 13 of thermal expansions.9 pairs of pads 15 of shell of clamping part 5 apply pressure radially and are fixed in the clamping part 5 after cooling.In order from tool holder 1, to take out pad 15 again, clamping part 5 is reheated, throw off pad 15 up to it.
May produce vibration, particularly flexural vibrations in the running of the throw in being clamped in tool holder 1.In order to stop pad 15 since vibrating shaft to shifting out accommodation hole 13, shell 9 comprises the slot part of a plurality of cannelure 21 forms in the zone of clamping surface 17, they take shape in the clamping surface 17 of shell 9 abreast with axial spacing.Each cannelure 21 has each side surface 23 perpendicular to axis that is parallel to each other, and it limits the supporting member 25 of each annular rib form between contiguous cannelure 21.Each supporting member 25 has top surface 27, and it constitutes a plurality of clamping surfaces 17.
Because axially contiguous supporting member 25 is separated from each other by a cannelure 21 respectively, they be axial elasticity within the specific limits and axial expansion that can compensate between pad 15 and the shell 9 poor.Suitably select the radial depth of cannelure 21 on the one hand with respect to the axial width of supporting member 25, and suitably select the axial width of cannelure 21 on the other hand with respect to the axial width of supporting member 25, thereby can influence tool holder 1 clamping region 5 vibration characteristics and influence its damping behavior.Meet the destination, the radial depth of cannelure 21 guarantees enough axial elasticities of supporting member 25 on the other hand greater than the axial width of top surface 27 and preferably also greater than the axial width of cannelure 21 so that weaken clamping surface 17 not too excessively on the one hand.The width of preferred cannelure 21 is also less than the width of the top surface 27 between the contiguous cannelure 21, so that guarantee enough big clamping surface 17.
Clamping surface 17 is determined by the top surface 27 of a plurality of annulars that axially are arranged side by side in the embodiment in figure 1.Replace a plurality of cannelures that axially are arranged side by side 21 that a unique helicla flute or the helicla flute of a plurality of axial dislocations in case of necessity also can be set, it becomes spiral yarn shaped being arranged in the clamping surface 17.One so more not detailed helicla flute that illustrates produces each circle supporting member, and it is equivalent to the supporting member 21 of above-mentioned annular.
Each scheme of the tool holder of following key diagram 1, the part of a same purpose is represented with the mark of the foregoing description and is provided with a letter to show difference.For description architecture and action principle and possible scheme, relate to whole descriptions.
In the embodiment in figure 1 two groove side surfaces 23 of cannelure 21 extend perpendicular to rotation 7 and therefore each supporting member 25 see to have rectangular profile towards the axial vertical section of clamping part 5.Each groove side surface is also by being different from 90 ° inclined at acute angles in rotation 7 in a scheme, thereby they have cone shape basically.According to each cannelure or the paired relatively mutually diminishing direction of each conical tank side surface of each spiral fluted, a parallelogram shape or a trapezoidal shape are seen-also complied with in the axial vertical section of the top surface of each support region-Chao clamping part 5.
Fig. 2 illustrates a tool holder 1a, and its clamping part 5 constitutes by the shell 9a of the accommodation hole 13a of a pad that is configured for not being shown specifically.The inner circumferential surface that is used as clamping surface 17a once more of the accommodation hole 13a of shell 9a comprises a plurality of cannelure 21a that axially are arranged side by side, and its each groove side surface 23a coning extends and dwindling gradually on away from the same direction of the inserting side of the pad that limits by end face 11a and with identical cone angle on the direction of rotation 7a.The supporting member 25a that keeps between contiguous cannelure 21a generally has parallelogram shape thus and locatees obliquely in contrast to the direction of extracting of pad.Be subjected to make when extracting the load of direction each supporting member 25a to hold up at pad, this improves the radial compaction power that pad is applied.
Fig. 3 illustrates a tool holder 16, the difference of the tool holder of itself and Fig. 2 is basically, the area supported 17b of shell 96 comprises two groups of cannelure 21b and 21b ', they have conical tank side surface 23b or 23b ' respectively, and they are formed in respectively between the supporting member 25b or 25b ' of each sloped position in pairs.Each groove side surface 23b or 23b ' dwindle gradually in the same way in each group and have identical cone angle, but each groove side surface of two groups oppositely dwindles gradually.Therefore two groups each supporting member 25b or the 25b ' by each cannelure 21b and 21b ' formation is the reversed dip location.Two groups each cannelure 21b and 21b ' dwindle mutually in opposite directions gradually in an illustrated embodiment.Two groups comprise the supporting member near similar number.
The supporting member structure is directly molded in the material of one shell of the formation clamping part 5 of moulding on tool holder in each scheme of above-mentioned tool holder.Fig. 4 illustrates the scheme of the tool holder 1c of a contraction clip head dummy, and its shell 9c that constitutes clamping part 5c is concentric with the cylindrical accommodation hole 29 that rotation formation one is used for a sleeve 31.Sleeve 31 has a cylindrical external peripheral surface 33 and constitutes the clamping surface 17c of tool holder in order to interference fit clamping tool handle 15c with its same cylindrical inner circumferential surface.
As shown in Figure 5, the clamping surface 17c of sleeve 31 comprises a plurality of axially extended grooves 35 that along the circumferential direction distribute.Other axially extended groove 37 is arranged between a pair of groove 35 in the centre respectively in the external peripheral surface 33 of sleeve 31.Thereby sleeve 31 has a roughly zigzag wall construction thus and has radially elastic characteristic in axial cross section.Certainly, opening 35 and 37 also can constitute the opening that radially passes sleeve 31 where necessary.
The supporting member 25c of the annular that is different from each cannelure 21c of form of implementation of Fig. 1 to 3 and constitutes between each cannelure 21c takes shape among the area supported 17c that constitutes by sleeve 31.Each cannelure 21c has each the groove side surface 23c that extends perpendicular to axis in an illustrated embodiment.But also can be according to changing each groove side surface 23c by Fig. 1 to 3 or following each scheme that illustrates by Figure 11 to 15.
9c makes tool holder 1c expand into its disengaged position by the heating shell.Radially expand to make at the sleeve 31 of this position radial elastic and pad 15c can be inserted among the accommodation hole 13c or from wherein taking out.With rear casing 9c interference fit clamping tool handle 15c, the sleeve 31 that utilizes clamping surface 17c face to be close to the cylindrical external peripheral surface 19c of pad 15c contiguously this moment will be press-fitted with joint efforts passes to pad 15c from shell 9c in cooling.
Sleeve 31 is installed among the shell 9c removedly, thereby can make tool holder 1c be matched with the pad of different-diameter by the replacing of sleeve 31.Meet the destination, the inner circumferential surface 29 of shell 9c is limited by an annular convex shoulder 39 in the axial side away from end face 11c, sleeve 31 with its inner axially mounting be positioned on this annular convex shoulder.
Fig. 6 illustrates a tool holder 1d, the difference of itself and tool holder 1c only is basically, and the inner circumferential surface 29d that is close to external peripheral surface 31d of the external peripheral surface 33d of sleeve 31d and shell 9d has cone shape and dwindles gradually to the end face 11d of the tool side of shell 9d over there.So the sleeve 31d of radial elastic is pulled to shoulder block 39d and axial location there automatically when tool holder 1d clamps.
Fig. 7 illustrates a tool holder 1e, the difference of the tool holder of itself and Fig. 6 is basically, thereby utilize its conical inner circumferential surface 29e be close to sleeve 31e same conical external peripheral surface 33e, clamped position produce be press-fitted the shell 9e that makes a concerted effort at it axially away from its end face 11e and the extension 41 that axially has a same sleeve shaped away from the side of throw, it is in the axial zone that surrounds the formation shoulder block 39e of tool holder 1e away from the side of sleeve 31e under the situation that forms an annular gap 43 with radial spacing.Extension 41 axially is fixedly connected on tool holder 1e away from the end of end face 11e at it.Sleeve 31e can insert among the shell 9e removedly; But it also can be fixedly connected on tool holder 1e in the zone of convex shoulder 39e, for example welds or be integral to be molded on the tool holder 1e.Shell 9e meet the destination be made for independent member and afterwards with its extension 41 axially be fixedly connected on tool holder 1e away from end of throw, for example welding, as it with shown in 45.
In when cooling shell 9e radial contraction and produce and be applied to radially being press-fitted on the pad 15e and make a concerted effort not only, and in axial direction shrink.Axial shrinkage improves radially to be press-fitted via trochoidal surface 29e, 33e on the one hand makes a concerted effort, and axially strains shell 9e but then.Show that the axial tension by shell 9e reduces the on-stream vibration of tool holder.Because the external peripheral surface 33e of sleeve 31e is surrounded in conical inner circumferential surface 29e friction sealedly, the friction loss that produces improves damping effect there.
Be provided with above by Fig. 1 to 3 explanation or the following supporting member structure that also will illustrate by Figure 11 to 15 at the embodiment of Fig. 7 middle sleeve 31e.Certainly, the area supported 17e of sleeve 31e also can constitute does not in case of necessity have such supporting member structure.
Fig. 8 illustrates the tool holder 1f of a contraction dop type, the tool holder of itself and Fig. 7 and there the difference of each scheme of explanation only be basically, the sleeve 31f that utilizes its conical external peripheral surface 33f to be close to the conical inner circumferential surface 29f of shell 9f is fixedly connected on tool holder 1f, wherein is provided with each opening 53 that radially passes sleeve 31f that axis vertical extends in the welding of a weld seam 51 places and in order to reach its radial elastic characteristic.Certainly, sleeve 31f also can be integral and be molded on the tool holder 1f.Shell 9f once more area supported 17f axially away from the side of throw have one with radial spacing surround tool holder 1f extension 41f and extension 41f axially be fixedly connected on tool holder 1f away from the side of throw, wherein weld at a weld seam 45f place.Shell 9f preferably is made of a kind of material, and it has than sleeve 31f and the bigger thermal coefficient of expansion of the material of tool holder 1f in the zone of extension 41f.
Meet the destination, only heating tool anchor clamps 1f in the zone of extension 41f is represented in Fig. 8 by each arrow 55 as it.The zone of the encirclement sleeve 31f of shell 9f is not heated together, affacts radially being press-fitted on the sleeve 31f and makes a concerted effort thereby only produce by the axial relative displacement of spring chuck mode by trochoidal surface 29f, 43f.Produce axial clamping force when tool holder 1f clamps in shell 9f, it improves the damping behavior of tool holder as above described in conjunction with Fig. 7.
Figure 10 illustrates the tool holder 1g of a contraction dop type, and its tool holder 1c that is similar to Fig. 4 comprises diameter compensation sleeve 31g in the conical inner circumferential surface 29g of its shell 9g.Diameter compensation sleeve 31g constitutes clamping surface 17g with its inner circumferential surface, and described clamping surface presses down the external peripheral surface 19g that is close to the pad 15g among the embedding accommodation hole 13g ordinatedly at the clamped condition of tool holder 1g.
The sleeve 31 that is different from the tool holder 1c among Fig. 4, sleeve 31g comprise outer sleeve 57 and the inner sleeve 59 that is provided with one heart mutually, and wherein outer sleeve 57 constitutes cylindrical external peripheral surface 33g and has a conical inner surface.Inner sleeve 59 constitutes clamping surface 17g and has the conical external surface 63 of the conical inner surface of being close to outer sleeve 57.That inner sleeve 59 constitutes radial elastics and have that the sleeve 31 that for example is similar among Fig. 5 distributes along the circumferential direction within it that clamping surface 17g goes up or/and axially extended each groove on its external peripheral surface 63.Outer sleeve 57 constitutes radial elastic in the corresponding way.Replace groove that radially straight-through opening also can be set, as be used for shown in the opening of sleeve 31g of Fig. 9.Axial relative displacement by outer sleeve 57 and inner sleeve 59 can change the internal diameter of clamping surface 17g and be matched with the diameter of pad 15g changeably.Can in certain diameter range, clamp the pad of different-diameter in such a way with one and same sleeve 31g.
The sleeve 31g that will take out from the shell 9g of tool holder 1g for clamping tool handle 15g is sleeved on the pad 15g.Can make the clamping surface 17g ground pad 15g that reclines contiguously that closely cooperates by respect to one another the moving axially of outer sleeve 57 and inner sleeve 59 then.For the ease of reclining, at the end that dwindles of inner sleeve 59 external screw thread 65 is set, it can be screwed in the internal thread 67 of outer sleeve.Enough is to only need except that the gap between clamping surface 17g and the pad 15g, because be that required being press-fitted with joint efforts of running is applied on the pad 15g via sleeve 31g by shell 9g.For sleeve can axially insert among the shell 9g definitely, outer sleeve 57 is provided with an annular lip 69, and its backstop is on the end face 11g of shell 9g.
Below by Figure 11 to 15 other scheme by the supporting member structure of Fig. 1 to 3 explanation is described.The tool holder that the supporting member structure not only can be used for Fig. 1 also can be used among Fig. 4 to 10 of then explanation.
The slot part that in above-mentioned supporting member structure, constitutes helicla flute or cannelure produce each helicla flute ring shape sealing, around slab supporting member rotation, longitudinal extension.Figure 11 illustrates a tool holder 1h, and its clamping part 5h constitutes by the shell 9h of the accommodation hole 13h of a pad that is configured for not being shown specifically.The inner circumferential surface that is used as clamping surface 17h once more of the accommodation hole 13h of shell 9h comprises a plurality of helicla flute part 21h that axially are arranged side by side, its each groove side surface 23h extension that radially meets at right angles.
Be provided with two groups of helicla flute part 21h ' and 21h ", each helicla flute part 21h ' has identical gradient and keeps axial spacing to extend abreast each other in two groups first group, that is and non-intersect.Each helicla flute part 21h of second group correspondingly " also be so, wherein each helicla flute part 21h of second group " though gradient identical but be in reverse to the gradient of each helicla flute part 21h ' of first group.Therefore " and each helicla flute part 21h ' intersects and constitutes in such a way the supporting member 25h of a plurality of rhombus convex form that are spaced apart from each other in all directions to each helicla flute part 21h.If two helicla flute part 21h ' and 21h " curl up in the same way, but have different gradients each other, then form a plurality of similar projectioies.
Figure 12 and 13 illustrates a scheme 1i, it has each cannelure 21i perpendicular to axis of first group of axial intersecting dislocation, as its by Fig. 1 explanation and have each groove 69 that second group the direction to rotation 7i along the circumferencial direction intersecting dislocation of clamping surface 17i is extended, they are crossing with each cannelure 21i.First group cannelure 21i that is parallel to each other and second group the axial groove that is parallel to each other equally 69 limit a plurality of supporting member 25i of the convex form that is spaced apart of those standard widths of a room in an old-style house in all directions once more in clamping surface 17i, its top surface 27i is similar to the forecast scheme configuration area supported 17i of Figure 11.
Figure 14 illustrates a tool holder 1k, the difference of the tool holder 1a of itself and Fig. 2 only is basically, and each cannelure 21k has a groove side surface 23k who extends perpendicular to rotation 7k and has one axially away from instrument inserting side directionally diminishing conical tank side surface 23k ' in its axial opposed side to side over there, instrument inserting side at it.The supporting member 25k that keeps between contiguous cannelure 21k generally has trapezoidal shape and extracts the direction sloped position in contrast to pad thus.
Figure 15 illustrates the scheme of the tool holder 1k among Figure 14, and the difference of itself and this tool holder only is basically, and each cannelure 21m fills up a filling material 71 that is different from the material of shell 9m.Filler 71 can comprise pottery, metal or plastics and improve vibration damping and/or guarantee the thermal insulation of pad in contraction process according to type of material.Certainly, in the supporting member structure of the embodiment of above-mentioned Fig. 1 to 13, also can use vibration damping or adiabatic filler in the same way.Can be enough under individual cases be that only the part of slot part sum is provided with such filler or only fills up the part of the longitudinal extension length of these slot parts.Extending axially the sealing that can also reach the groove passage under groove or the spiral fluted situation whereby especially.
Claims (10)
1. tool holder, its clamping part comprises that one is concentric with tool holder (1d, e, rotation f) (7d, e, f) housing parts (9d, e, f) in order to the fixing handle of a knife of throw, this housing parts (9d, e, f) be fixedly connected on tool holder (1d, e, f) and determine that one is used for the accommodation hole (13d of handle of a knife, e, f), housing parts (9d, e wherein, f) can move on to one by heating and be used to insert or take out the disengaged position of handle of a knife and can move on to a clamped position, at this clamped position housing parts handle of a knife be applied radially to be press-fitted and make a concerted effort by cooling;
It is characterized in that housing parts (9d, e, f) surround one be concentric with rotation (7d, e, f), be bearing in the accommodation hole (13d of on the tool holder and handle of a knife that be configured for throw vertically, e, the sleeve part of radial elastic f) (31d, e, f), the inner circumferential surface of this sleeve part constitute a clamping surface (17d, e is f) in order to housing parts (9d, e, being press-fitted f) makes a concerted effort to pass to handle of a knife;
(9d, e f) have a conical inner surface (29d to housing parts, e, f), and sleeve part (31d, e f) has a conical external surface (33d, e, f), described conical inner surface and conical external surface are at rotation (7d, e, f) dwindle gradually to throw on the direction, wherein conical inner surface (29d, e over there, f) clamped position be close to conical external surface (33d, e, f);
And one side housing parts (9e, f) on an axial side, have one and axially stretch out sleeve part (31e away from throw, f) clamping surface (17e, f) zone, surround tool holder (1e with radial spacing, f) and/or the sleeve part (31e, extension f) (41,41f), the end regions of described extension be fixedly connected on tool holder (1e, f);
And/or on the other hand housing parts (9d, e f) are made of a kind of material, and this material coefficient of thermal expansion coefficient is greater than sleeve part (31d, e, thermal coefficient of expansion f) and/or tool holder (1d, e, f) by housing parts (9d, e, f) thermal coefficient of expansion of area surrounded.
2. according to the described tool holder of claim 1, it is characterized in that (31d, e f) have the compensation slit that at least one extends vertically in the sleeve part.
3. according to the described tool holder of claim 2, it is characterized in that (31d, e f) have a plurality of described compensation slits that along the circumferential direction distribute in the sleeve part.
4. according to the described tool holder of claim 2, it is characterized in that described at least one compensation slit constitutes vertically the groove that extends, or constitute extend vertically radially pass sleeve part (31d, e, opening f).
5. according to the described tool holder of claim 4, it is characterized in that sleeve part (31d, e, f) within it circumferential surface (17d, e have a plurality of axially extended groove that along the circumferential direction cuts out on f), sleeve part (31d, e is f) at its external peripheral surface (33d, e, f) the axially extended groove that has other on, these are between the groove on the external peripheral surface along the circumferential direction is separately positioned on a pair of groove on the inner circumferential surface.
6. according to the described tool holder of claim 1, it is characterized in that, housing parts (9d, e, f) be welded on tool holder (1d, e, f) on.
7. according to the described tool holder of claim 1, it is characterized in that sleeve part (31f) constitutes the sleeve that axially is integral moulding away from an end and the tool holder of throw with it, or constitutes hard-wired sleeve (31f).
8. according to the described tool holder of claim 7, it is characterized in that sleeve (31f) is fixed by welding.
9. be used for throw is clamped in method according to one of claim 1 to 8 described tool holder, it is characterized in that, in order to change tool holder over to disengaged position, the heating housing parts (9e, and extension f) (41, zone 41f).
10. in accordance with the method for claim 9, it is characterized in that, only heat housing parts (9e, extension f) (41, zone 41f).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004028682.5 | 2004-06-14 | ||
| DE102004028682 | 2004-06-14 | ||
| DE102004042770A DE102004042770A1 (en) | 2004-06-14 | 2004-09-03 | Tool holder for a rotary tool |
| DE102004042770.4 | 2004-09-03 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580025089A Division CN100579695C (en) | 2004-06-14 | 2005-06-14 | Tool holder and method for clamping rotating tool on tool holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101569995A CN101569995A (en) | 2009-11-04 |
| CN101569995B true CN101569995B (en) | 2010-09-29 |
Family
ID=38185404
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101325955A Expired - Fee Related CN101569995B (en) | 2004-06-14 | 2005-06-14 | Tool holder for a rotating tool and method for clamping a rotating tool in tool holder |
| CN200580025089A Expired - Fee Related CN100579695C (en) | 2004-06-14 | 2005-06-14 | Tool holder and method for clamping rotating tool on tool holder |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580025089A Expired - Fee Related CN100579695C (en) | 2004-06-14 | 2005-06-14 | Tool holder and method for clamping rotating tool on tool holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN101569995B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008045233A1 (en) * | 2008-08-28 | 2010-03-04 | Franz Haimer Maschinenbau Kg | Shrink chuck with expansion grooves |
| CH701136B1 (en) * | 2009-06-26 | 2013-09-30 | Rego Fix Ag | Clamping system. |
| GB0912022D0 (en) * | 2009-07-10 | 2009-08-19 | Element Six Holding Gmbh | Attack tool assembly |
| JP5011366B2 (en) * | 2009-11-27 | 2012-08-29 | 株式会社日研工作所 | Tool holder and method for assembling the tool holder |
| CN102029501A (en) * | 2010-12-17 | 2011-04-27 | 华中科技大学 | Automatic hot-pressing assembly device of balancing shaft and helical gear |
| DE102012104606B4 (en) * | 2012-05-29 | 2015-11-19 | Franz Haimer Maschinenbau Kg | Tool holder for a screw-in tool |
| CN103447599A (en) * | 2012-06-01 | 2013-12-18 | 株式会社日研工作所 | Shank structure of end mill and tool holder |
| DE102013103168B3 (en) * | 2012-12-21 | 2014-04-17 | Franz Haimer Maschinenbau Kg | Tool chuck for holding cutter head in machine tool, has clamping section connected with body and provided for clamping tool, and single-piece, molded section comprising cavities in inner area, where cavities form enclave in molded section |
| DE102013108209B3 (en) * | 2013-07-31 | 2014-12-11 | Haimer Gmbh | tool holder |
| DE102018221005A1 (en) * | 2018-12-05 | 2020-06-10 | Audi Ag | Chuck for a rotary tool |
| CN113245929A (en) * | 2021-06-01 | 2021-08-13 | 大连理工大学 | Elastic grinding shaft sleeve with radial deformation and symmetric distribution |
| CN115179085B (en) * | 2022-07-26 | 2023-05-23 | 成都永峰科技有限公司 | High-precision machining device for manufacturing aerospace parts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2610066A (en) * | 1950-05-22 | 1952-09-09 | Gulf Research Development Co | Chuck |
| FR2489189A1 (en) * | 1980-05-30 | 1982-03-05 | Glimpel Emuge Werk | Tubular spring with bars of varying axial thickness - is formed by cutting axially spaced circumferentially staggered slots normal to axis of metal tube |
| EP0548628A1 (en) * | 1991-12-20 | 1993-06-30 | OTTO BILZ Werkzeugfabrik GmbH & Co. | Chuck for tools, work pieces or the like |
| CN1487866A (en) * | 2001-01-22 | 2004-04-07 | ���ʴġ���Ĭ��е�������Ϲ�˾ | Device for the inductive heating of a toolholder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5460388A (en) * | 1994-02-03 | 1995-10-24 | Kennametal Inc. | Endmill adapter with torque reducing locknut and collet interface |
-
2005
- 2005-06-14 CN CN2009101325955A patent/CN101569995B/en not_active Expired - Fee Related
- 2005-06-14 CN CN200580025089A patent/CN100579695C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2610066A (en) * | 1950-05-22 | 1952-09-09 | Gulf Research Development Co | Chuck |
| FR2489189A1 (en) * | 1980-05-30 | 1982-03-05 | Glimpel Emuge Werk | Tubular spring with bars of varying axial thickness - is formed by cutting axially spaced circumferentially staggered slots normal to axis of metal tube |
| EP0548628A1 (en) * | 1991-12-20 | 1993-06-30 | OTTO BILZ Werkzeugfabrik GmbH & Co. | Chuck for tools, work pieces or the like |
| CN1487866A (en) * | 2001-01-22 | 2004-04-07 | ���ʴġ���Ĭ��е�������Ϲ�˾ | Device for the inductive heating of a toolholder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100579695C (en) | 2010-01-13 |
| CN101569995A (en) | 2009-11-04 |
| CN1988975A (en) | 2007-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101569995B (en) | Tool holder for a rotating tool and method for clamping a rotating tool in tool holder | |
| US7938408B2 (en) | Tool holder for a rotary tool | |
| JP7194721B2 (en) | Cavity-incorporated tool holder and method of manufacturing the tool holder | |
| RU2400330C2 (en) | Tool holder characterised by low vibration | |
| JP3839482B2 (en) | Cutting tool | |
| JP5167132B2 (en) | Tool holder to fix the tool by shrinkage fit | |
| US5311654A (en) | Tool holder system and method of making | |
| US756339A (en) | Composite drill. | |
| US6595528B2 (en) | Chuck for the clamping of tools by shrink fit | |
| US7367763B2 (en) | Shrink fit tool holder with grooves | |
| EP1152858B1 (en) | Tool and cutting head for cutting machining | |
| KR100373816B1 (en) | Supporting pads for drill | |
| US7182558B2 (en) | Tool holder for a tool that can rotate about an axis of rotation | |
| CA2699592C (en) | Shrink fit sleeve for tool holder | |
| US20070172325A1 (en) | Forstner drill bit | |
| US7758289B2 (en) | Diameter-compensating bush for a tool holder | |
| JP2000176724A (en) | Fitting type cutting tool | |
| CN1131754C (en) | Machining tool special for steel workpiece | |
| US6123489A (en) | Drilling tool for machine tools and method of producing the same | |
| US6726223B2 (en) | Adjustable-length tool holder | |
| CN100546744C (en) | Tool retraction receiving element and the connector that this is positioned | |
| US20230044418A1 (en) | Method and appartus for retaining a tool in a tool holder with defined contact surfaces | |
| US20020180165A1 (en) | Heat-shrinkable chuck | |
| CN103862111A (en) | Rotary Tool, In Particular Reaming Tool and Adjustment Element For a Rotary Tool | |
| JP2000052111A (en) | Throwaway tip holding mechanism for cutting tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20180614 |