TW201639658A - Machine tool and control device for said machine tool - Google Patents

Abstract

The purpose of the present invention is to provide a machine tool that fragments swarf and reduces the load on the cutting tool, and a control device for said machine tool. The present invention is: a machine tool configured so that within a cutting tool feed segment in the range in which the portions that are cut during forward movement and during backward movement overlap, separated feed segments, in which the cutting tool is fed while the cutting tool is separated from a workpiece, are provided; and a control device therefor.

Description

Machine tool and its control device

The present invention relates to a machine tool for performing workpiece machining while cutting chips in a cutting process, and a control device for the machine tool.

There has been known a machine tool having a workpiece holding means for holding a workpiece, a tool holder for holding a cutting tool for cutting the workpiece, and cutting by the relative movement of the workpiece holding means and the tool holder a feeding means for feeding a tool to a predetermined machining feed direction with respect to the workpiece system; and the workpiece holding means and the tool holder are relatively vibrated so that the cutting tool vibrates back and forth along the machining feed direction A vibration means for feeding to the machining feed direction and a rotation means for relatively rotating the workpiece and the cutting tool. For an example similar to the conventional machine tool, please refer to Patent Document 1 Japanese Patent No. 5033929 (see especially paragraph 0049). The control device of the machine tool drives and controls the rotating means, the feeding means, and the vibration means, and the feeding operation is performed by the relative rotation of the workpiece and the cutting tool and the feeding operation of the cutting tool with respect to the workpiece The aforementioned back and forth vibration is applied to the aforementioned machining feed direction to carry out the processing of the aforementioned workpiece.

In the conventional machine tool, when the cutting tool cuts the workpiece while vibrating back and forth in the machining feed direction, the cutting tool always comes into contact with the workpiece, so that a load may be applied to the cutting edge of the cutting tool.

The present invention solves the aforementioned problems of the prior art, that is, the object of the present invention is to provide a machine tool and a control device for the same, which can cut chips and reduce cutters. With the load.

The invention of claim 1 is a machine tool comprising: a workpiece holding means for holding a workpiece; a tool holder for holding a cutting tool, the cutting tool is for cutting the workpiece; The means for feeding and actuating the cutting tool relative to the workpiece to a predetermined machining feed direction by the relative movement of the workpiece holding means and the tool holder; a vibration means for holding the workpiece holding means and the vehicle The tool holder relatively vibrates along the machining feed direction; and a rotating means rotates the workpiece and the cutting tool relatively, and the vibration means is combined with the rotating means and driven to control the vibration of the back and forth vibration The cutting portion is repeated with the cutting portion at the time of vibration reset, and the cutting tool is fed back and forth to the machining feed direction while vibrating back and forth along the machining feed direction, by the relative rotation of the workpiece and the cutting tool, and For the feeding operation of the cutting tool, the feeding operation is accompanied by the back and forth vibration to the machining feeding direction to perform the machining of the workpiece. In the state in which the cutting portion is repeated during the vibration advancement and the vibration resetting, in the feed section of the cutting tool, in the state in which the cutting tool is separated from the workpiece, a separate feed section for causing the cutting tool to be driven to be moved is provided. This solves the aforementioned problem.

In the invention of claim 2, in addition to the configuration of the machine tool described in claim 1, the cutting tool and the workpiece are moved along the cutting direction of the cutting tool. The separation of the workpieces further solves the aforementioned problems.

The invention of claim 3 of the patent application scope is in addition to the configuration of the machine tool described in the first item of the patent application or the second item of the patent application scope, the separation feed section occupies the cutting portion of the vibration advancement and the vibration resetting. The entire range of the cutting tool is repeated in the range of repetition, thereby further solving the aforementioned problems.

The invention of claim 4 is a control device for a machine tool, which is provided in a control device of a machine tool described below, the machine tool having: a workpiece holding means, Holding a workpiece; a tool holder for holding a cutting tool for cutting the workpiece; a feeding means for cutting the tool by the relative movement of the workpiece holding means and the tool holder Feeding and operating in a predetermined machining feed direction with respect to the workpiece; a vibration means for relatively vibrating the workpiece holding means and the tool holder in a machining feed direction; and a rotation means for The workpiece and the cutting tool are relatively rotated, and the vibration means is combined with the rotating means and driven to control, so that the cutting portion when the vibration of the back and forth vibration advances is overlapped with the cutting portion when the vibration is reset, by the workpiece and the a relative rotation of the cutting tool and a feeding operation of the cutting tool to the workpiece, the feeding operation being accompanied by the back and forth vibration in the machining feeding direction to perform machining of the workpiece, the vibration advancement and the vibration resetting In the state in which the cutting portion is repeated, in the feed section of the cutting tool, the cutting tool is moved in the state in which the cutting tool is separated from the workpiece. Separating the feed zone, thereby solving the aforementioned problems.

According to the machine tool of the invention of the first aspect of the present application, in the range in which the cutting process is repeated during the vibration advancement and the vibration resetting, the cutting tool is separated from the workpiece in the feed section of the cutting tool. The cutting tool is fed in a separate feed section in which the cutting tool and the workpiece are separated, and the cutting tool is not in contact with the workpiece, so that the cutting of the cutting chip is not affected, and the load of the cutting tool is reduced.

According to the machine tool of the invention of claim 2, in addition to the effects of the invention of claim 1, the cutting tool and the workpiece can be moved along the cutting direction of the cutting tool. The separation of the aforementioned cutting tool from the aforementioned workpiece is easily performed.

According to the working machine of the third aspect of the patent application of the present application, in addition to the effect produced by the invention of claim 1 or 2, the cutting tool is in the range of the cutting portion in which the vibration advances and the vibration is reset. In the entire feed section, the cutting tool does not contact the workpiece, so that the cutting tool can be prevented from coming into contact with the workpiece to cause an adverse effect on the machined surface of the workpiece.

According to the working machine of the fourth application patent scope of the present application, the control machine of the machine tool The same effect as that produced by the invention of claim 1 is obtained.

100‧‧‧Tool machine

110‧‧‧ Spindle

110A‧‧‧ headstock

120‧‧‧ chuck

130‧‧‧Cutting tools

130A‧‧‧Cutting Tool Table

131‧‧‧Knife edge

150‧‧‧X-axis feed mechanism

151‧‧‧Carriage

152‧‧‧X-axis direction guide rail

153‧‧‧X-axis feed table

154‧‧‧X-axis direction guide

155‧‧‧Linear servo motor

155a‧‧‧ mover

155b‧‧‧stator

160‧‧‧Z-axis feed mechanism

161‧‧‧Carriage

162‧‧‧Z-axis guide rails

163‧‧‧Z-axis feed table

164‧‧‧Z-axis direction guide

165‧‧‧Linear servo motor

165a‧‧‧ mover

165b‧‧‧stator

C‧‧‧Control device

C1‧‧‧Control Department

W‧‧‧Workpiece

W1‧‧‧Working surface of workpiece

W2‧‧‧ workpiece unprocessed

A1, A2, A3, A4, B1, B2, B3, D1, D2, D3‧‧‧ cutting tool moving direction

S‧‧‧feed interval

Fig. 1 is a schematic view showing a power tool according to a first embodiment of the present invention.

Fig. 2 is a schematic view showing the relationship between a cutting tool and a workpiece according to the first embodiment of the present invention.

Fig. 3 is a view showing the back and forth vibration and positional view of the cutting tool of the first embodiment of the present invention in the Z-axis direction.

Fig. 4 is a view showing the relationship between the nth rotation, the n+1th rotation, and the n+2th rotation of the main shaft of the first embodiment of the present invention.

Fig. 5 is a view showing an operation example of vibration in the Z-axis direction and the X-axis direction in the first embodiment of the present invention.

Fig. 6 is a view showing an operation example of vibration in the Z-axis direction and the X-axis direction in the second embodiment of the present invention.

Fig. 7 is a view showing an operation example of vibration in the Z-axis direction and the X-axis direction in the third embodiment of the present invention.

The above and other objects, features, and advantages of the present invention will be apparent from the embodiments of the invention. In a state in which the cutting tool is separated from the workpiece in a range in which the cutting tool is overlapped in the range in which the machining progress is repeated during the vibration advancement and the vibration reset, the separation feed zone in which the cutting tool is fed is set. In this way, the cutting chips are cut off, and while the cutting tool does not contact the workpiece during the separation of the cutting tool from the workpiece to reduce the load of the cutting tool, the specific embodiment can be used.

(First Embodiment) Fig. 1 shows the control of the first embodiment of the present invention A schematic diagram of the machine tool 100 of the apparatus C. The machine tool 100 includes a main shaft 110 as a rotating means and a cutting tool stage 130A as a turning table. The front end of the main shaft 110 is provided with a chuck 120 as a workpiece holding means. The workpiece W is held by the spindle 110 by the chuck 120. The spindle 110 is supported by the spindle stage 110A to be rotationally driven by the power of a spindle motor (not shown).

The spindle head 110A is attached to the bed side of the machine tool 100, and is movably mounted in the Z-axis direction which is the axial direction of the spindle 110 by the Z-axis direction feed mechanism 160. The main shaft 110 is moved in the Z-axis direction via the Z-axis direction feed mechanism 160 via the spindle table 110A. The Z-axis direction feed mechanism 160 constitutes a spindle moving mechanism that moves the spindle 110 in the Z-axis direction.

The Z-axis direction feed mechanism 160 includes a platform 161 and a Z-axis direction guide rail 162 that is integrated with a fixed side of the Z-axis direction feed mechanism 160 such as the bed, and the Z-axis direction guide The slide rail 162 is provided on the platform 161 and extends in the Z-axis direction. The Z-axis direction feed table 163 is slidably supported by the Z-axis direction guide rail 162 via the Z-axis direction guide 164. A mover 165a of the linear servo motor 165 is disposed on the side of the Z-axis direction feed table 163, and a stator 165b of the linear servo motor 165 is disposed on the side of the stage 161.

The spindle stage 110A is mounted on the Z-axis direction feed table 163, and is driven by the linear servo motor 165 to move the Z-axis direction feed stage 163 in the Z-axis direction. The spindle head 110A moves in the Z-axis direction by the movement of the Z-axis direction feed table 163, and moves the spindle 110 in the Z-axis direction.

The cutting tool holder 130A is attached with a cutting tool 130 such as a turning tool that rotates the workpiece W. The cutting tool holder 130A is attached to the bed side of the machine tool 100, and is movably disposed in the X direction orthogonal to the Z-axis direction by the X-axis direction feeding mechanism 150 and the Y-axis direction feeding mechanism (not shown). The axial direction and the Y-axis direction orthogonal to the Z-axis direction and the X-axis direction. The X-axis direction feed mechanism 150 and the Y-axis direction feed mechanism constitute a tool holder moving mechanism that moves the cutting tool holder 130A to the spindle 110 in the X-axis direction and the Y-axis direction.

The X-axis direction feed mechanism 150 includes a platform 151 and an X-axis direction guide rail 152 which is integrally formed with a fixed side of the X-axis direction feed mechanism 150, and the X-axis direction guide rail 152 is provided. The vehicle platform 151 extends in the X-axis direction. The X-axis direction feed table 153 is slidably supported by the X-axis direction guide rail 152 via the X-axis direction guide 154.

A mover 155a of a linear servo motor 155 is disposed on the side of the X-axis direction feed table 153, and a stator 155b of the linear servo motor 155 is disposed on the side of the stage 151. The X-axis direction feed stage 153 is moved and driven in the X-axis direction by the driving of the linear servo motor 155. Further, the Y-axis direction feed mechanism is configured such that the X-axis direction feed mechanism 150 is disposed on the Y-axis, and is the same as the X-axis direction feed mechanism 150. Therefore, detailed description of the structure will be omitted.

In the first embodiment, the X-axis direction feeding mechanism 150 is mounted on the bed side via a Y-axis direction feeding mechanism (not shown), and the cutting tool stage 130A is mounted on the X-axis direction feeding table 153. The cutting tool holder 130A is moved in the X-axis direction by the movement of the X-axis direction feed table 153, and the Y-axis direction feed mechanism performs the same operation as the X-axis direction feed mechanism 150 in the Y-axis direction. Move in the Y-axis direction.

Further, a Y-axis direction feeding mechanism (not shown) may be mounted on the bed side via the X-axis direction feeding mechanism 150, and a cutting tool table 130A may be mounted on the Y-axis direction feeding mechanism side by the Y-axis. Since the direction feed mechanism and the X-axis direction feed mechanism 150 move the cutting tool holder 130A in the X-axis direction and the Y-axis direction, the detailed description and illustration are omitted.

The tool holder moving mechanism (the X-axis direction feeding mechanism 150 and the Y-axis direction feeding mechanism) and the spindle moving mechanism (the Z-axis direction feeding mechanism 160) are cooperatively coupled, and the cutting tool table 130A is advanced by the X-axis direction. The mechanism 150 and the Y-axis direction feed mechanism are moved in the X-axis direction and the Y-axis direction, and the spindle head 110A (spindle 110) is moved in the Z-axis direction by the Z-axis direction feed mechanism 160, thereby being attached to the cutting. The cutting tool 130 of the tool table 130A is relatively advanced with respect to the workpiece W to an arbitrary machining feed direction.

By the aforementioned spindle moving mechanism and the aforementioned tool holder moving mechanism By means of the means, the cutting tool 130 is fed relative to the workpiece W to an arbitrary machining feed direction, whereby the workpiece W is machined into an arbitrary shape by the cutting tool 130 as shown in Fig. 2 .

Further, in the present embodiment, both the spindle head 110A and the cutting tool holder 130A are configured to move. However, the spindle head 110A may be fixed to the bed side of the machine tool 100 without moving, and the tool holder moving mechanism may be configured. The cutting tool holder 130A is moved in the X-axis direction, the Y-axis direction, or the Z-axis direction. At this time, the feeding means is constituted by a tool holder moving mechanism that moves the cutting tool holder 130A in the X-axis direction, the Y-axis direction, or the Z-axis direction, and the cutting tool holder 130A is fixedly positioned and rotated with respect to the cutting tool holder 130A. The driven spindle 110 is moved to allow the cutting tool 130 to perform a machining feed operation on the workpiece W.

Further, the cutting tool holder 130A may be fixed to the bed side of the machine tool 100 without moving, and the spindle moving mechanism may be configured to move the headstock 110A in the X-axis direction, the Y-axis direction, or the Z-axis direction. At this time, the feed means is constituted by a headstock moving mechanism that moves the headstock 110A in the X-axis direction, the Y-axis direction, or the Z-axis direction, and the spindle table 110A is fixedly positioned with respect to the cutting tool table 130A. The movement allows the cutting tool 130 to perform a machining feed operation on the workpiece W. Further, in the present embodiment, the workpiece W is rotated relative to the cutting tool 130, but the cutting tool 130 may be rotated relative to the workpiece W.

The rotation of the main shaft 110, the Z-axis direction feed mechanism 160, the X-axis direction feed mechanism 150, and the Y-axis direction feed mechanism are driven and controlled by the control unit C1 of the control device C. The control unit C1 is configured to control each of the feed mechanisms as vibration means, and to move the spindle head 110A or the cutting tool holder 130A in their respective directions while vibrating back and forth along the respective moving directions.

Each of the feed mechanisms is controlled by the control unit C1. As shown in Fig. 3, the main shaft 110 or the cutting tool holder 130A is vibrated once in a single round, and is moved forward (vibration forward) by a predetermined amount of advancement. The back amount is reversed (vibration reset), and the difference is measured in each The moving direction moves, and the parallel cooperation causes the cutting tool 130 to be fed to the machining feed direction with respect to the workpiece W.

The machine tool 100 uses the Z-axis direction feeding mechanism 160, the X-axis direction feeding mechanism 150, and the Y-axis direction feeding mechanism to cause the cutting tool 130 to vibrate back and forth along the machining feed direction while feeding at a feed rate. To the machining feed direction, the feed amount is the total of the aforementioned advance amounts when the spindle is rotated once, that is, when the spindle phase is changed from 0 degrees to 360 degrees.

When the workpiece W is rotated, the spindle stage 110A (the spindle 110) or the cutting tool holder 130A (the cutting tool 130) moves while vibrating back and forth, and when the workpiece W is cut into a predetermined shape via the cutting tool 130, the workpiece W is The circumferential surface is cut into a sinusoidal shape as shown in Fig. 4. Further, in the imaginary line (single-chain line) of the valley of the sinusoidal waveform, the amount of change in the position at which the spindle phase changes from 0 to 360 degrees indicates the amount of advancement. As shown in Fig. 4, the number of vibrations N of the spindle stage 110A (spindle 110) or the cutting tool stage 130A for one rotation of the workpiece W is 3.5 (the number of vibrations N = 3.5) as an example.

At this time, in the n+1th rotation (n is an integer of 1 or more), the lowest point of the phase of the surface shape of the workpiece rotated by the cutting tool 130 (as the feed tool 130 is fed in the feed direction) The position of the peak of the peak of the broken line waveform at the point of cutting the most, the lowest point of the phase of the shape of the shape rotated by the cutting tool 130 in the nth rotation (the peak of the peak of the solid line waveform) is in the direction of the spindle phase ( The horizontal axis of the graph is offset.

Thereby, the cutting portion when the vibration of the cutting tool 130 advances, and the cutting portion when the vibration is reset are partially repeated, and the cutting portion of the n+1th rotation of the circumferential surface of the workpiece includes the portion of the nth rotation that has been cut. By the vibration cutting, the cutting tool 130 passes through the machined surface of the portion where the workpiece W has been cut in the machining feed direction, thereby generating an air vibration without cutting the workpiece W. The chips generated by the workpiece W during the cutting process are sequentially cut by the above-described air vibration. The machine tool 100 can smoothly perform the external cutting of the workpiece W while cutting the chips by the back and forth vibration in the cutting feed direction of the cutting tool 130.

The chip is sequentially cut by the back and forth vibration of the cutting tool 130, and the cutting portion of the n+1th rotation of the workpiece circumferential surface includes the portion where the nth rotation has been cut. In other words, in the n+1th rotation of the workpiece circumferential surface (n is an integer of 1 or more), the trajectory of the cutting tool 130 at the time of vibration resetting may reach the trajectory of the cutting tool 130 in the nth rotation of the workpiece circumferential surface. As shown in FIG. 4, the phase of the shape of the workpiece W rotated by the cutting tool 130 on the n+1th rotation and the nth rotation does not necessarily need to be reversed by 180 degrees.

For example, the number of vibrations N can be set to 1.1, 1.25, 2.6, or 3.75, and the like. It is also possible to set the vibration of the workpiece W to be rotated less than once in one rotation (0 <number of vibrations N < 1.0). In this case, the main shaft 110 is rotated once or more with respect to the vibration.

In the machine tool 100, the operation command by the control unit C1 is performed in units of a predetermined time period. The back and forth vibration of the spindle stage 110A (spindle 110) or the cutting tool stage 130A (cutting tool 130) can be operated at a prescribed frequency based on the aforementioned command time unit. For example, in the case where the control unit C1 sends the work machine 100 with 250 commands in one second, the operation command of the control unit C1 is performed in a cycle of 1÷250=4 (ms) (unit of command time). .

The control unit C1 of the present embodiment causes the cutting tool 130 to vibrate back and forth to separate the dry vibration of the workpiece W by a predetermined amount of cutting, and to separate from the workpiece processing surface W1 of the processed surface of the workpiece W along the cutting direction. . For example, in the case where the machining feed direction is the Z-axis, the cutting tool 130 is separated from the workpiece machining surface W1 of the machined surface of the workpiece W in the X-axis direction of the workpiece radial direction in the dry vibration to vibrate back and forth. In other words, in the case where the vibration is advanced and the vibration is reset, the cutting tool 130 is placed in the feed section S of the cutting tool 130 in the range in which the cutting portion is repeated, and the cutting tool 130 and the workpiece W are separated. The separate feed interval for the feed operation.

As shown in Fig. 5, the control unit C1 resets the end of the arrow A3 in the feed section S where the cutting tool 130 is located when the cutting tool 130 is reset by the vibration of the back and forth vibration, as indicated by the arrow A4. As shown, in the range of the vacant vibration of the feed section S, the direction of separation from the workpiece machining surface W1 is moved along the plunging direction, and the predetermined distance is separated by the workpiece W, and as indicated by the arrow A1, along the plunging direction The workpiece machining surface W1 is moved to a position where the cutting edge 131 of the cutting tool 130 is cut at a predetermined cutting amount, and contacts the workpiece machining surface W1 at a predetermined position on the path of the feed section S. When the cutting tool 130 contacts the workpiece machining surface W1 at the end of the arrow A1, the control portion C1 moves the cutting tool 130 on the path of the aforementioned feed section S as indicated by an arrow A2, and continues to feed the workpiece W to the relative machining. The direction of the vibration of the back and forth, continuously cutting the workpiece W2. In this manner, the control unit C1 controls the vibration means to repeat the operations indicated by the arrows A1 to A4.

The blade edge 131 of the separating feed section cutting tool 130 does not contact the workpiece W, and the separation feed section 130 is from the beginning end of the arrow A4 separated from the workpiece W to the workpiece W during the idle vibration. The operation section of the end of the arrow A1 (the start end of the arrow A2) until the separation is completed. As a result, the load on the blade edge 131 of the cutting tool 130 can be alleviated. Further, the cutting oil can easily enter between the blade edge 131 of the cutting tool 130 and the workpiece W, so that the efficiency of the cutting oil can be improved. The end of the arrow A1 as the contact position of the cutting tool 130 is set as the midpoint of both ends of the path of the feed section S, and the cutting edge 131 of the cutting tool 130 is set to be cut by the position of the machined workpiece W1. The surface of the workpiece processing surface W1 can be improved by cutting the convex portion generated on the workpiece processing surface W1 via the previous processing.

(Second Embodiment) The second embodiment is as shown in Fig. 6, and the control portion C1 is such that the end of the arrow B2 in the feed section S where the cutting tool 130 is located when the cutting tool 130 is reset by the vibration of the back and forth vibration, such as an arrow As shown in B3, it moves in the direction in which the workpiece processing surface W1 is separated along the cutting direction, and is separated by a predetermined distance by the workpiece W, and as shown by the arrow B1, the path along the feeding section S and the cutting direction are directed to the workpiece processing surface W1. The blade edge 131 moved to the cutting tool 130 is in a position where the cutting amount is cut by a predetermined cutting amount, and contacts the workpiece machining surface W1 at the end position of the aforementioned feeding section S. When the cutting tool 130 contacts the workpiece processing surface W1 at the end of the arrow B1, the control portion C1 continues to vibrate back and forth with respect to the workpiece W in the relative machining feed direction, and continues to cut the workpiece unprocessed portion. W2.

In this manner, the control unit C1 controls the vibration means to repeat the operations indicated by the arrows B1 to B3. In the present embodiment, the operation sections of the arrow B3 and the arrow B1 are the above-described separation feed sections. The operation of this embodiment is compared with the operation of the first embodiment, and there is no operation of the arrow A2 of the first embodiment. Therefore, the contact time between the cutting tool 130 and the workpiece processing surface W1 in the idle vibration can be shortened, and the cutting tool can be promoted. The load on the blade edge 131 of 130 is reduced.

(Third Embodiment) The cutting tool 130 is moved in the direction in which the workpiece processing surface W1 is separated, and can be performed along the path of the feeding section S by the arrow A4 or the arrow B3 shown in the above two embodiments. As shown in Fig. 7 of the third embodiment, the end of the arrow D2 in the feed section S where the cutting tool 130 is located when the vibration of the back-and-forth vibration is reset, as indicated by the arrow D3, is independent of the path of the feed section S. The direction of the cut is made. After the cutting tool 130 is separated by the predetermined distance from the workpiece W, as shown by the arrow D1, the cutting tool 130 is moved to the workpiece processing surface W1 along the cutting direction to the cutting edge 131 of the cutting tool 130 at a predetermined cutting amount. The end position of the aforementioned feed section S contacts the workpiece processing surface W1.

When the cutting tool 130 contacts the workpiece processing surface W1 at the end of the arrow D1, the control portion C1 continues the vibration of the cutting tool 130 against the workpiece W in the relative machining feed direction, and continues to cut the workpiece unprocessed portion W2.

In this manner, the control unit C1 controls the vibration means to repeat the operations indicated by the arrows D1 to D3. In the present embodiment, the operation sections of the arrow B3 and the arrow B1 are the above-described separation feed sections. The operation of this embodiment is compared with the operations of the first embodiment and the second embodiment, and the amount of movement in the machining feed direction is reduced in the air vibration, and the movement time is shortened.

Further, in the second embodiment and the third embodiment described above, the separation feed zone can be occupied by making the end of the arrow B2 or D2 (the start end of the arrow B3 or D3) coincide with the start end of the feed zone S. The aforementioned feed interval S is as a whole.

Although the present invention has been disclosed using the above embodiments, it is not intended to limit the present invention. It is to be understood that those skilled in the art can make various modifications and changes to the above embodiments without departing from the spirit and scope of the present invention. The scope of protection of the present invention is therefore dependent on the application. The scope defined by the patent scope shall prevail.

120‧‧‧ chuck

130‧‧‧Cutting tools

131‧‧‧Cutting tool table

W‧‧‧Workpiece

W1‧‧‧Working surface of workpiece

W2‧‧‧ workpiece unprocessed

A1, A2, A3, A4‧‧‧ cutting tool moving direction

Claims (4)

A machine tool comprising: a workpiece holding means for holding a workpiece; a tool holder for holding a cutting tool, the cutting tool cutting the workpiece; a feeding means by the workpiece holding means and The relative movement of the tool holder causes the cutting tool to be fed and actuated relative to the workpiece in a predetermined machining feed direction; a vibration means is used to make the workpiece holding means and the tool holder relative to each other along the machining feed direction Ground vibration; and a rotating means for relatively rotating the workpiece and the cutting tool, and the vibration means is combined with the rotating means and driven to control the cutting portion and the vibration resetting when the vibration of the back and forth vibration is advanced The cutting portion is repeated, and the cutting tool is fed back and forth to the machining feed direction while vibrating back and forth along the machining feed direction, by the relative rotation of the workpiece and the cutting tool, and the cutting tool feeds the workpiece Acting, the feed action is accompanied by the back and forth vibration to the machining feed direction to perform machining of the workpiece, the vibration advances and the vibration is reset Repeating the grinding processing portion of the feed section of the range of the cutting tool, the cutting tool and the workpiece at the separated state, the cutting tool is provided for the feed motion of the feed zone separated. The machine tool of claim 1, wherein the cutting tool and the workpiece are separated by moving the cutting tool and the workpiece along a cutting direction of the cutting tool. The machine tool according to claim 1 or 2, wherein the separation feed section occupies the entire feed section of the cutting tool in a range in which the machining progress portion is repeated during the vibration advancement and the vibration reset. A control device for a machine tool is provided in a control device of a machine tool comprising: a workpiece holding means for holding a workpiece; and a tool holder for holding a cutting tool, the cutting tool system The workpiece is cut and processed; a feeding means for feeding and actuating the cutting tool relative to the workpiece to a predetermined machining feed direction by the relative movement of the workpiece holding means and the tool holder; a vibration means for holding the workpiece holding means And the tool holder is relatively vibrated along the machining feed direction; and a rotating means rotates the workpiece and the cutting tool relatively, and the vibration means is combined with the rotating means and driven to control the back and forth vibration The machining portion at the time of the vibration advancement is overlapped with the machining portion at the time of the vibration reset, and the feed operation is accompanied by the relative rotation of the workpiece and the cutting tool and the feeding operation of the cutting tool to the workpiece. The feed direction is vibrated back and forth to perform the machining of the workpiece, and the vibration is advanced and the cutting portion of the cutting tool is repeated in the range in which the cutting portion is repeated, and the cutting tool is separated from the workpiece. The cutting tool is fed into the separate feed zone for actuation.