CN100391667C - Z axis structure of PCB drilling machine - Google Patents
Z axis structure of PCB drilling machine Download PDFInfo
- Publication number
- CN100391667C CN100391667C CNB2005101002005A CN200510100200A CN100391667C CN 100391667 C CN100391667 C CN 100391667C CN B2005101002005 A CNB2005101002005 A CN B2005101002005A CN 200510100200 A CN200510100200 A CN 200510100200A CN 100391667 C CN100391667 C CN 100391667C
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- drilling machine
- guide rail
- pcb drilling
- axle construction
- construction according
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Abstract
The present invention discloses a Z axis structure of a PCB drilling machine, which comprises a bottom board, a servo motor, a lead screw, a nut seat, a main shaft, an air flotation guide rail component and a coupler, wherein a guide mechanism of the nut seat is arranged between the nut seat and the bottom board, and the lower end of the nut seat is connected with the upper end of the main shaft through the coupler; the air flotation guide rail component is fixed on the lower part of the bottom board, the main shaft penetrates through an inner hole of the air flotation guide rail component, and the outer surface of the main shaft forms a clearance fit with the inner hole of the air flotation guide rail component. Since the air flotation guide rail is adopted, the present invention has the advantages of small feeding working resistance of the main shaft, no local wear caused in the working conditions of high frequency and short stroke, long service life, no need of adjustment of the air flotation guide rail, has no need of lubricating and small work amount of maintenance.
Description
Technical field
The present invention relates to printed circuit board processing device, especially a kind of Z axle construction of the PCB drilling machine that on printed circuit board (PCB), punches.
Background technology
Traditional PCB drilling machine, its Z axle construction comprise base plate 1, main shaft 2, auger spindle folder 3, nut seat 4, screw mandrel 5, servomotor 6, line slideway 7, linear slider 8 and slide 9 as shown in Figure 1.Main shaft 2 utilizes auger spindle folder 3 to be fixed on the slide 9, and four linear slider 8 that are packed on the slide 9 match with the line slideway on the base plate 7, can slide up and down along line slideway 7.Servomotor 6 is installed in the top of base plate, and its output shaft links to each other with screw mandrel 5 upper ends, and drives screw mandrel 5 rotations.Screw mandrel 5 is passed in the nut seat 4 that is contained on the slide 9, and drive nut seat 4 and slide 9 are done rectilinear motion up and down along line slideway 7 when screw mandrel 5 rotations, drive main shaft 2 and finish feed motion.The feeding guide rail structure of traditional PCB drilling machine Z axle construction has following shortcoming:
1.PCB drilling machine Z axle construction is worked under the condition of high-frequency, short stroke, concentration of local friction, causes the line slideway concentrated wear easily, and the straight-line guidance precision of guide rail is reduced, and causes the machining accuracy of lathe to reduce, working life is short;
2. be to adopt rail plate or rolling guide all has moving component and directly contacts, working resistance is big, and the dust of in addition holing also enters the rail friction surface easily, has further increased working resistance.
Summary of the invention
It is little that the technical problem to be solved in the present invention provides a kind of feeding guide rail working resistance, not easy to wear, the PCB drilling machine Z axle construction of long working life.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is, a kind of PCB drilling machine Z axle construction, comprise base plate, servomotor, screw mandrel, nut seat, main shaft, also comprise air-float guide rail assembly, shaft coupling, nut seat is with being provided with the nut seat guiding mechanism between the base plate, the nut seat lower end is with connecting with shaft coupling between the main shaft upper end, the air-float guide rail assembly is packed in the base plate bottom, and main shaft passes the endoporus of air-float guide rail assembly, and the outerface of spindle is a matched in clearance with the endoporus of air-float guide rail assembly; Described air-float guide rail assembly comprises track base, guide rail sleeve and sealing ring, and the outer surface of guide rail sleeve has annular air cavity with the stage casing of both matching parts of track base, has air admission hole to communicate with annular air cavity on the track base; Have the distribution of gas groove of annular in the guide rail sleeve cylindrical bore, have throttle orifice to communicate in the distribution of gas groove with annular air cavity.
Above-described nut seat guiding mechanism can be that rolling guide also can be a rail plate.
Above-described shaft coupling can be that yielding coupling also can be a Hooks coupling universal coupling.
Above-described Hooks coupling universal coupling comprises two connecting pins, a bar shaped gusset piece, two plain radial bearings.Two spindle noses that connect axle have pod that can hold bar shaped gusset piece, plain radial bearing and the cross-drilled hole of wearing connecting pin.The external diameter of two plain radial bearings cooperates with two endoporus of bar shaped gusset piece respectively, the bar shaped gusset piece that plain radial bearing is housed inserts two and is connect in the pod of spindle nose of axle, connecting pin passes and is connect the cross-drilled hole of axle and the endoporus of plain radial bearing, and two are connect axle links to each other by connecting pin, plain radial bearing, bar shaped gusset piece
Above-described shaft coupling is with preferably connecting by felt pad between the main shaft.
Above-described PCB drilling machine Z axle construction, the outer surface of described air-float guide rail package traces sleeve is an interference fits with the endoporus of track base, two ends seal with sealing ring.
Above-described guide rail sleeve can be made up of metal-coating tube and self-lubricating material neck bush.Described self-lubricating material can be high polymer resin class material.Described metal is stainless steel preferably.
Preferably two of above-described distribution of gas grooves.
Above-described throttle orifice is made up of aperture and macropore, and macropore communicates with annular air cavity, and aperture communicates with macropore, and the distribution of gas groove communicates with aperture.The best plane, bottom that macropore is connected with aperture.Each throttle orifice can have a plurality of apertures.The diameter of aperture is 0.05 to 0.3 millimeter, and the diameter of macropore is 0.5 to 3 millimeter.Can uniform 3 to 36 throttle orifices in each distribution of gas groove along circumference.
The present invention is because adopted air-float guide rail, high-precision main shaft cylindrical and high-precision air-float guide rail assembly endoporus adopt matched in clearance, and both do not have the relative slip of direct contact under positice ground effect, have not both had metal friction, also do not have the viscosity resistance of lubricating oil, the axis feeding working resistance is little; The direct contact of air-float guide rail movement-less part can not cause concentrated wear under the condition of work of high-frequency, short stroke, unlikely reduction straight-line guidance precision, long working life; And air-float guide rail need not adjust at work, do not need to lubricate yet, and maintenance workload is little.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structure diagram of prior art PCB drilling machine Z axle construction.
Fig. 2 is the front view of PCB drilling machine Z axle construction embodiment of the present invention.
Fig. 3 is the left view of PCB drilling machine Z axle construction embodiment of the present invention.
Fig. 4 is the structural representation of PCB drilling machine Z axle construction embodiment air-float guide rail assembly of the present invention.
Fig. 5 is the partial enlarged drawing of Fig. 4 position III.
Fig. 6, Fig. 7 are respectively the structural representations of air-float guide rail assembly throttle orifice.
Fig. 8 is the partial enlarged drawing of Fig. 2 position I.
Fig. 9 is the partial enlarged drawing of Fig. 3 position II.
The specific embodiment
In the embodiment of Fig. 2 PCB drilling machine Z axle construction of the present invention shown in Figure 3, comprise base plate 1, servomotor 6, screw mandrel 5, nut seat 4, main shaft 2, also comprise air-float guide rail assembly 10, shaft coupling 13.Air-float guide rail assembly 10 is packed in the bottom of base plate 1, and main shaft 2 passes the endoporus of air-float guide rail assembly, and the external diameter of the precision machined main shaft 2 of process is a matched in clearance with the endoporus of air-float guide rail assembly 10.The upper end of main shaft 2 is through felt pad 15, nut seat coupling head 14, and shaft coupling 13 connects with the lower end of nut seat 4, together moves up and down with nut seat 4.In order to guarantee 4 works of nut seat rectilinear motion up and down, can not rotate, nut seat 4 is with being provided with the nut seat guiding mechanism between the base plate 1.In the present embodiment, the nut seat guiding mechanism is made up of with being screwed at the axis of guide 17 of nut seat 4 back the straight line chute on the base plate 1 11.On the axle journal of the axis of guide 17 insertion straight line chutes 11 rolling bearing is housed, this rolling bearing external diameter cooperates with the side of straight line chute 11, makes rectilinear motion up and down in order to guide vanes female seat 4.Certainly, above-described nut seat guiding mechanism can adopt other rolling linear guides fully, also can adopt rail plate.In order to reduce the stressed of screw mandrel 5 and wearing and tearing, present embodiment has been installed two balancing springs 16 between the top of nut seat 4 and base plate 1, in order to the gravity of balance nut seat 4 and following parts.
Fig. 4, shown in Figure 5 be the structure principle chart of air-float guide rail assembly among the PCB drilling machine Z axle construction embodiment of the present invention.Present embodiment air-float guide rail assembly comprises track base 101, guide rail sleeve and sealing ring 103.The outer surface of guide rail sleeve is an interference fits with the endoporus of track base, and there is annular air cavity 102a in the stage casing of both matching parts, and guide rail sleeve two ends are with sealing to prevent that compressed air from leaking with sealing ring 103 between the endoporus of track base.There is air admission hole 101a to communicate on the track base 101 with annular air cavity 102a; Have the distribution of gas groove 104a of two annulars in the guide rail sleeve cylindrical bore, have throttle orifice to communicate among the distribution of gas groove 104a with annular air cavity 102a.Air admission hole 101a on the track base 101 connects compressed air source, and compressed air enters guide rail sleeve cylindrical bore by air admission hole 101a, annular air cavity 102a, throttle orifice and gas distributing slot 104a, forms air cushion between endoporus is with main shaft.In the present embodiment, the composite construction sleeve formed by stainless steel outer sleeve tube 102 and polycarbonate neck bush of guide rail sleeve.In actual applications, outer sleeve also can use copper sheathing or other metallic sheaths, and neck bush can adopt close other of high polymer resin class material or mechanical performance to have the complex of the material of self-lubricating feature such as acetal, graphite and composite thereof, polyimide, polytetrafluoroethylene (PTFE) etc. or these materials.In the present embodiment, above-mentioned throttle orifice is made up of aperture 104b and macropore 102b, and macropore 102b communicates with annular air cavity 102a, and aperture 104b is coaxial and communicate with macropore 102b, and distribution of gas groove 104a communicates with aperture 104b.The diameter of macropore 102b is 1.5 millimeters (getting 0.5～3 millimeter in actual applications), the diameter of aperture 104b is 0.15 millimeter (getting 0.05～0.3 millimeter in actual applications), both diameters differ bigger, and the bottom of macropore 102b is the plane, after compressed air enters macropore 102b, impurity can be separated, be deposited on the bottom of macropore 102b, the unlikely aperture that enters produces fault.In the present embodiment, 6 throttle orifices that are uniformly distributed along the circumference among each distribution of gas groove 104a make the air-float guide rail pressure balance, in actual applications, can adopt 3-36 throttle orifice that is uniformly distributed along the circumference.Cause along the circumferential pressure imbalance in order to prevent that aperture 104b stops up in the throttle orifice, cause main shaft to cause wearing and tearing, can in each throttle orifice, arrange a plurality of aperture 104b with the sleeve contact.Fig. 6 and Fig. 7 are respectively the schematic diagrames of arranging two and three apertures in the throttle orifice.
For compensate nut seat 4 with between the main shaft 2 because of the coaxiality deviation of making or alignment error causes, the shaft coupling that adopts between the upper end of the lower end of nut seat 4 with main shaft 2 can be that yielding coupling also can be a Hooks coupling universal coupling.The Hooks coupling universal coupling that adopts in the present embodiment such as Fig. 8, shown in Figure 9.This Hooks coupling universal coupling is made up of 2 connecting pins 131, latch 132, locking dividing plate 133, support plate 134, elastic ring 135,137,4 holding screws 138 of 136,2 plain radial bearings of bar shaped gusset piece and locking nut 139.The bottom of the top of nut seat coupling head 14 and nut seat 4 has pod 14a, 4a that can hold bar shaped gusset piece 136, plain radial bearing 137 and the lateral aperture of wearing connecting pin 131, and the length and width of the 4a of pod 14a is respectively greater than the corresponding size of bar shaped gusset piece 136 and plain radial bearing 137.The bar shaped gusset piece 136 that assembles, plain radial bearing 137 assemblies are inserted among the 4a of pod 14a, insert 2 connecting pins 131 again and just nut seat coupling head 14 and nut seat 4 can be linked together the effect of playing gimbal suspension.In order to eliminate the gap and to absorb vibration, between two connecting pins 131 latch 132, locking dividing plate 133, elastic ring 135 and support plate 134 are being housed successively up and down.Uniform 138,4 holding screws 138 of 4 holding screws are installed on latch 132 stagger about 45 ° with connecting pin 131.Evenly tighten 4 holding screws 138 and just can eliminate the gap, and make elastic ring 135 stressed even with locking nut 139 lockings.Elastic ring 135 in can absorption work vibration and remedy skew in a small amount.
Claims (17)
1. PCB drilling machine Z axle construction, comprise base plate, servomotor, screw mandrel, nut seat, main shaft, it is characterized in that, also comprise air-float guide rail assembly, shaft coupling, nut seat is with being provided with the nut seat guiding mechanism between the base plate, the nut seat lower end is with connecting with shaft coupling between the main shaft upper end, and the air-float guide rail assembly is packed in the base plate bottom, main shaft passes the endoporus of air-float guide rail assembly, and the outerface of spindle is a matched in clearance with the endoporus of air-float guide rail assembly; Described air-float guide rail assembly comprises track base, guide rail sleeve and sealing ring, and the outer surface of guide rail sleeve has annular air cavity with the stage casing of both matching parts of track base, has air admission hole to communicate with annular air cavity on the track base; Have the distribution of gas groove of annular in the guide rail sleeve cylindrical bore, have throttle orifice to communicate in the distribution of gas groove with annular air cavity.
2. PCB drilling machine Z axle construction according to claim 1 is characterized in that described nut seat guiding mechanism is a rolling guide.
3. PCB drilling machine Z axle construction according to claim 1 is characterized in that described nut seat guiding mechanism is a rail plate.
4. PCB drilling machine Z axle construction according to claim 1 is characterized in that described shaft coupling is a yielding coupling.
5. PCB drilling machine Z axle construction according to claim 1 is characterized in that described shaft coupling is a Hooks coupling universal coupling.
6. PCB drilling machine Z axle construction according to claim 5, it is characterized in that, described Hooks coupling universal coupling comprises two connecting pins, a bar shaped gusset piece, two plain radial bearings, two spindle noses that connect axle have and can hold the bar shaped gusset piece, the pod of plain radial bearing and the cross-drilled hole of wearing connecting pin, the external diameter of two plain radial bearings cooperates with two endoporus of bar shaped gusset piece respectively, the bar shaped gusset piece that plain radial bearing is housed inserts two and is connect in the pod of spindle nose of axle, connecting pin passes and is connect the cross-drilled hole of axle and the endoporus of plain radial bearing, and two are connect axle passes through connecting pin, plain radial bearing, the bar shaped gusset piece links to each other.
7. PCB drilling machine Z axle construction according to claim 1 is characterized in that described shaft coupling is with connecting by felt pad between the main shaft.
8. according to the described PCB drilling machine of any one claim Z axle construction in the claim 1 to 7, it is characterized in that the outer surface of described air-float guide rail package traces sleeve is an interference fits with the endoporus of track base, two ends seal with sealing ring.
9. PCB drilling machine Z axle construction according to claim 8 is characterized in that described guide rail sleeve is made up of metal-coating tube and self-lubricating material neck bush.
10. PCB drilling machine Z axle construction according to claim 9 is characterized in that, described self-lubricating material is high polymer resin class material.
11. PCB drilling machine Z axle construction according to claim 9 is characterized in that described metal is a stainless steel.
12. PCB drilling machine Z axle construction according to claim 8 is characterized in that described distribution of gas groove has two.
13. PCB drilling machine Z axle construction according to claim 8 is characterized in that described throttle orifice is made up of aperture and macropore, macropore communicates with annular air cavity, and aperture communicates with macropore, and the distribution of gas groove communicates with aperture.
14. PCB drilling machine Z axle construction according to claim 13 is characterized in that the bottom that described macropore is connected with aperture is the plane.
15. PCB drilling machine Z axle construction according to claim 13 is characterized in that each throttle orifice has a plurality of apertures.
16. PCB drilling machine Z axle construction according to claim 13 is characterized in that the diameter of aperture is 0.05 to 0.3 millimeter, the diameter of macropore is 0.5 to 3 millimeter.
17. PCB drilling machine Z axle construction according to claim 8 is characterized in that, 3 to 36 throttle orifices are uniformly distributed along the circumference in each distribution of gas groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101002005A CN100391667C (en) | 2005-10-02 | 2005-10-02 | Z axis structure of PCB drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101002005A CN100391667C (en) | 2005-10-02 | 2005-10-02 | Z axis structure of PCB drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1745940A CN1745940A (en) | 2006-03-15 |
| CN100391667C true CN100391667C (en) | 2008-06-04 |
Family
ID=36165751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101002005A Expired - Fee Related CN100391667C (en) | 2005-10-02 | 2005-10-02 | Z axis structure of PCB drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100391667C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528094A (en) * | 2010-12-23 | 2012-07-04 | 维嘉数控科技（苏州）有限公司 | Z-axis structure of printed circuit board (PCB) drilling machine |
| CN103128331B (en) * | 2013-01-29 | 2015-12-23 | 深圳市光波光能科技有限公司 | Ultrahigh speed Micro-v oid instrument boring device and system |
| CN112976147B (en) * | 2021-03-16 | 2024-10-11 | 广州市昊志机电股份有限公司 | Z-axis structure of drilling machine and drilling machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4092719A (en) * | 1975-09-03 | 1978-05-30 | Ing. C. Olivetti & C., S.P.A. | Autoadaptive working center for programmable automation |
| US5002441A (en) * | 1987-04-17 | 1991-03-26 | International Business Machines Corporation | Drilling unit |
| US5033922A (en) * | 1987-11-20 | 1991-07-23 | Toshiba Kikai Kabushiki Kaisha | Apparatus for driving spindles of machine tools |
| RU1811985C (en) * | 1990-05-15 | 1993-04-30 | Ю.В.Пальцев, Г.В.Пальцева и А.В.Чури- лин | Electric spindle in gas-lubricated plain bearings |
| JPH1071505A (en) * | 1996-08-29 | 1998-03-17 | Shin Meiwa Ind Co Ltd | Spindle |
| JP2000126901A (en) * | 1998-10-26 | 2000-05-09 | Tsugami Corp | Fixed position indexing device of tool spindle for turning set |
| CN2621100Y (en) * | 2003-06-19 | 2004-06-23 | 深圳市大族数控科技有限公司 | PCB six-bit drilling machine |
| CN2644082Y (en) * | 2003-06-17 | 2004-09-29 | 深圳市大族数控科技有限公司 | Pneumatic machinery arm of PCB drill |
-
2005
- 2005-10-02 CN CNB2005101002005A patent/CN100391667C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4092719A (en) * | 1975-09-03 | 1978-05-30 | Ing. C. Olivetti & C., S.P.A. | Autoadaptive working center for programmable automation |
| US5002441A (en) * | 1987-04-17 | 1991-03-26 | International Business Machines Corporation | Drilling unit |
| US5033922A (en) * | 1987-11-20 | 1991-07-23 | Toshiba Kikai Kabushiki Kaisha | Apparatus for driving spindles of machine tools |
| RU1811985C (en) * | 1990-05-15 | 1993-04-30 | Ю.В.Пальцев, Г.В.Пальцева и А.В.Чури- лин | Electric spindle in gas-lubricated plain bearings |
| JPH1071505A (en) * | 1996-08-29 | 1998-03-17 | Shin Meiwa Ind Co Ltd | Spindle |
| JP2000126901A (en) * | 1998-10-26 | 2000-05-09 | Tsugami Corp | Fixed position indexing device of tool spindle for turning set |
| CN2644082Y (en) * | 2003-06-17 | 2004-09-29 | 深圳市大族数控科技有限公司 | Pneumatic machinery arm of PCB drill |
| CN2621100Y (en) * | 2003-06-19 | 2004-06-23 | 深圳市大族数控科技有限公司 | PCB six-bit drilling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1745940A (en) | 2006-03-15 |
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Granted publication date: 20080604 Termination date: 20091102 |