JP3476057B2 - Numerical control machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical control machine such as a lathe, a turning center and a machining center.

[0002]

2. Description of the Related Art When performing turning, there is a case where a desired processing portion of a work held by a spindle chuck cannot be processed in the current chuck state. For example, if the center of the machined portion is deviated from the center of the spindle, or if the front and back sides are reversed, turning cannot be performed. In such a case, conventionally, a worker manually changes the work by a spindle chuck or installs a special change device to automate the change of the work. However, the work efficiency is low in the manual changeover work, and the manual changeover cannot be performed in the unmanned operation for 24 hours. Furthermore, if a dedicated holding device is provided, the overall structure of the lathe becomes complicated and the device becomes expensive. For this reason,
Actually, such processing that requires a change of hand cannot be performed,
The product shape of turning will be limited.

A turning center, a turret lathe, or the like is provided with a function of indexing a rotation angle of a spindle chuck, and in addition to turning, a desired working portion of a work is processed by a rotary tool such as a drill. Therefore, various processing is possible. However, similarly to the above, there is a case where the desired processing portion of the work held by the spindle chuck cannot be processed in the current chuck state. For this reason,
The variety of processing will be limited. On the other hand, in a device such as a machining center where the work is fixed and the tool head is moved, the work gripping means is provided with a hydraulic or pneumatic shift mechanism or an index mechanism, and the work position or work posture Can be changed. If such a shift mechanism or index mechanism is provided on the spindle chuck, a desired processing portion can be processed without changing the work piece. However, it is not realistic to provide the above-mentioned shift mechanism or index mechanism on the spindle chuck that rotates at a high speed because it is impossible to install a power transmission system.

An object of the present invention is to provide a numerical control machine having a simple structure and capable of processing a desired portion of a work without changing the work. Another object of the present invention is to enable processing of a desired portion of a work without lowering processing accuracy.

[0005]

A numerical control machine according to the present invention is provided with a spindle chuck for gripping a work and a tool for machining the gripped work, and the tool is moved toward and away from the work. Ru and a movable tool supporting means to. The spindle chuck is
Two workpiece gripping bases facing each other across the center of the handle
It has a table on the front and one of the workpiece gripping bases is
Fixed to the chuck body of the
The gripping base moves radially toward the spindle center.
It is installed on the chuck body so that it can move freely, and
On the surface of the gripping base on the spindle center side,
Installed rotatably around the axis of rotation orthogonal to the spindle center
Placed on the index rotary table, and is orthogonal to the axis of rotation.
A shift stand is installed so that it can slide in any direction.
Place the workpiece on the facing surface of the platform and the workpiece holding base on the movable side.
Each work gripping jig to be gripped is attached,
The dollar chuck is a rotation angle indexing function that serves as a positioning function for positioning the work holding jig in a predetermined posture.
Is to have. Before SL tool supporting means, moved by the actuating member having a workpiece holding jig in a predetermined orientation on the tool supporting means, as this movement, the workpiece bunch
When sliding the holding jig, use the work holding jig
Parallel to the sliding direction of the shift table that passes through the rotation center of
Move the operating member in the direction and rotate the workpiece gripping jig
When moving, move the rotation center of the work gripping jig.
It is to move in a direction that does not pass . According to this structure, the work holding jig is movable with respect to the spindle chuck , and the movement of the tool supporting means is used to move the work holding jig by the operating member provided in the tool supporting means. Therefore, the work held by the work holding jig can be moved by moving the tool supporting means while holding the work. As described above, since the work can be moved with respect to the work gripping means, there is less restriction on the processing by the gripping position or the gripping posture by the work gripping means, and the desired processing part of the work can be processed. Since it is not necessary to change the work, the error caused by changing the work is unlikely to occur and the machining accuracy is improved. Further, since the work holding jig is moved by using the movement of the tool supporting means, a special drive mechanism for moving the work is unnecessary, the configuration is simple, and the entire numerical control machine can be made compact. It Furthermore, the work
When sliding the gripping jig, grip the workpiece.
Slide direction of the workpiece gripping jig that passes through the rotation center of the tool
Move the operating member in the direction parallel to
When rotating the tool, rotate the work holding jig.
Since it is designed to move in a direction that does not pass through the center of rotation,
Only by devising the moving direction of the moving member,
And rotation can be selectively performed.

[0006] Te this invention smell, the previous Symbol tool support means,
It may be provided with a tool for performing a turning process in contact with a rotating work. Further, the numerical control machine may be configured such that the work holding jig is moved by the operating member so that the center of the processed portion of the work is located on the axis of the spindle chuck . In the case of this configuration, by turning the work holding jig by using the movement of the tool supporting means, it is possible to perform a turning process on a desired working portion of the work.

[0007] Also, in the case of this configuration, by sliding the workpiece holding fixture, before the movement,
It is possible to perform turning of a work processing portion around a position eccentric from the rotation center of the work gripping means. Further, by turning the work holding jig, the turning of the work portion in each direction of the work can be performed.

[0008]

[0009]

[0010]

Further, in the present invention, the work gripping means may have a fixing / releasing means capable of fixing the work gripping jig at a predetermined position and releasing the fixation during movement. In the case of this configuration, it is possible to prevent the workpiece from swinging during processing due to the movable work holding jig, and improve the processing accuracy.

The fixing / releasing means may be composed of a plunger and a locking recess with which the plunger is engaged. In this case, the structure of the fixing / releasing means is simple.
Further, a pin may be provided to support the rotation center of the work holding jig when the work holding jig is rotated. As a result, unexpected eccentricity of the work holding jig can be prevented and rotation can be performed smoothly.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. This numerically controlled machine is applied to a numerically controlled machine tool, more specifically to a turret lathe. This numerical control machine is composed of a machine body 1 and a numerical control device 2. As shown in FIG. 2, in the machine body 1, a column-shaped spindle base 4 is fixedly installed on a frame 3 such as a bed, and the tool supporting means 5 is mounted on the frame 3 via a tool feed base 13 in the front-rear direction (Z direction and X direction). )
It is installed so that it can be moved. A spindle 6 is rotatably installed on the spindle base 4, and at its shaft end,
A spindle chuck 7, which is a work holding means, is provided. The spindle 6 is rotationally driven by a rear spindle motor 8 and has a rotation angle indexing function (also referred to as "positioning function"). That is, the spindle chuck 7, which is a work holding means, has a function of positioning work holding jigs 25 and 26 described later in a predetermined posture.

The tool supporting means 5 is a turret type and is a turret type, and has a plurality of tool stations S on its outer circumference. At each tool station S, a tool 11 such as a turning tool for performing turning and a rotary tool 12 (FIG. 1) such as a drill and a milling head are installed via a tool holder. The tool feed base 13 is installed on the frame 3 via a guide 14 so as to be movable left and right (X direction), and is installed on the feed base base 13a so as to be movable back and forth (Z direction). It consists of the upper feed table 13b. The turret type tool support means 5 is installed on the upper feed table 13 via the turret bar 15 in a posture parallel to the center O of the spindle 6 and at the same height position so as to be indexed and rotatable. The feed base 13a is moved back and forth by the X-axis servo motor 16 and feed screw 17, and the upper feed base 13b is driven by the Z-axis servo motor 18 and feed screw 19. Indexing rotation of the turret type tool support means 5 is performed by an indexing motor 20.
The tool feed base 13 may be a single base that is driven to move back and forth in the X direction, and the turret bar 15 may be installed so as to be rotatable for indexing and moving back and forth.

As shown in FIGS. 3 and 4, the spindle chuck 7, which is a work gripping means, has two work gripping bases 22 and 23 which are opposed to each other with the spindle center O interposed therebetween. One work holding base 22 is fixed to the chuck body 21, and the other work holding base 23 is fixed.
Are installed on the chuck body 21 so as to be movable in the radial direction toward the spindle center O. The movable work holding base 23 is moved by the operation of the chuck opening / closing means 24 including a link provided in the chuck body 21 and a chuck draw bar provided in the spindle 6. Work gripping jigs 25 and 26 for gripping the work W are attached to the facing surfaces of the work gripping bases 22 and 23, respectively. These work holding jigs 25, 26
A plurality of types are prepared and replaced with the work gripping bases 22 and 23 according to the shape of the work W and the like.

An indexing rotary table 27 is rotatably installed around a rotation axis Q orthogonal to the spindle center O on the surface of the fixed work gripping base 22 on the chuck center (spindle center O) side. On the indexing turntable 27, its rotation axis Q
A shift base 28 is installed so as to be slidable in a direction orthogonal to the shift base 28. The shift table 28 is formed in a disc shape. The work holding jig 25 is attached to the shift base 28. The movable workpiece holding base 23 is a base main body 29 that is moved by the chuck opening / closing means 24, and a base front end that is rotatably attached to the base main body 29 about a pivot 31 parallel to the spindle center O. And the member 30. A guide pin 40 is provided at the center in the width direction on the chuck center side surface of the base tip member 30, and the work gripping jig 26 engages with the guide pin 40 at the guide groove 41, so that the work gripping base 23 is It is slidably and rotatably mounted. The guide pin 40 has an enlarged head portion, and the guide groove 41 is formed in a groove having a T-shaped cross section in which the guide pin 40 is slidably fitted so that the head portion does not come off.

The work holding jigs 25 and 26 on both sides are connected to each other by a pair of rod-shaped jig connecting members 42 so as to be movable only in the approaching and separating directions.
This rod-shaped jig connecting member 42 is fixed to one work holding jig 25, and is fitted in a hole provided in the other work holding jig 26 so as to be able to move back and forth. Due to the connection by the jig connecting member 42, when the work holding jig 25 on the indexing turntable 27 side is rotated or slid, the other work holding jig 26 also rotates or slides together with the work holding jig 25. I do.

As shown in FIGS. 5, 7 and 9, the indexing rotary table 27 of the work holding base 22 is formed in a disk shape and is rotated in the shallow circular recess 32 formed in the work holding base 22. It fits freely. Further, in the rotary indexing table 27, a pin 34 penetrates through a hole 33 formed in the center so that the pin 34 can move back and forth.
The pin 34 is rotatable about a spindle. The pin 34 is driven to be projected and retracted by the pin driving means 35 installed on the work gripping base 22, and engages with the engaging hole 55 provided at the center of the shift base 28 in the width direction in a protruding state. In this engaged state, the sliding of the shift base 28 with respect to the indexing rotary base 27 is blocked. The pin driving means 35 is composed of a fluid pressure type cylinder device built in the work holding base 22. As shown in FIG. 5, the work gripping base 22 is provided with a first fixing / releasing means 43 capable of fixing and fixing the indexing turntable 27 at a predetermined rotation angle. This first
The fixing / releasing means 43 of the
4 is composed of a locking pin 45 which is removably engaged with the locking pin 4, and a locking pin drive means 46 which drives the locking pin 45 to project and retract. The holes 44 of the indexing rotary table 27 are provided at respective positions according to the angle at which the indexing rotary table 27 is rotated for indexing. In this example,
Since the index rotary table 27 is only rotated by 180 °, holes 44 are provided at two positions in the circumferential direction. The locking pin driving means 46 is composed of a fluid pressure cylinder device built in the work gripping base 22.

As shown in FIG. 7, the shifting direction of the shift base 28 is regulated by the key grooves 36 and 37 formed over the work gripping base 22 and the indexing rotary base 27, and the rear surface of the shift base 28. This is performed by engaging the key 38 provided so as to be able to move forward and backward. Both key grooves 36 and 37 are used for the indexing turntable 2
When 7 is at a predetermined rotation angle, it continues. Stoppers 39 are attached to both ends of the key groove 36 of the work gripping base 22, and by engaging the keys 38 with the stoppers 39,
The slide range of the shift table 28 is restricted. Further, the indexing rotary table 27 is provided with a second fixing / releasing means 47 for restricting the sliding position of the shift table 28 to a predetermined position. The second fixing / releasing means 47 is used for the indexing turntable 27.
A plurality of (two in this example) plungers 48 provided in a buried state, and a locking concave portion 49 provided on the back surface of the shift base 28 and with which a ball-shaped engaging element at the tip of the plunger 48 is engaged. . The plunger 48 is provided with a ball-shaped engaging element at the upper end of a cylindrical case so as to be capable of projecting and retracting to a predetermined projecting position, and a spring member for urging the ball-shaped engaging element in the projecting manner. The locking recesses 49 correspond to the plungers 48 so that the locking recesses 49 can be fixed at a plurality of slide positions of the shift base 28 (three positions in this example).
9 are provided in plurality. The locking recess 49 is formed on the end surface of the pin-shaped recess forming member 50, and by fitting the recess forming member 50 into the hole provided in the shift base 28, the locking recess 49 is formed in the shift base 28. Is provided.

The shift base 28 is provided with operating member engaging portions 51 at a plurality of positions on the outer peripheral surface (four positions at 90 ° intervals in this example). The operating member engaging portion 51 is provided on the shift base 28.
Is formed in a groove-shaped recess extending in the tangential direction and closed at one end. An operating member 52 that engages with the operating member engaging portion 51 to rotate and slide the work holding jig 25.
(Fig. 9) is a turret type tool supporting means 5 (Figs. 1 and 2).
It is attached to one tool station S in place of the tool. The operating member 52 is a pin-shaped member and has a spherical tip.

The numerical controller 2 will be described with reference to FIG. The numerical controller 2 is means for controlling the entire machine body 1 according to the machining program 53, and has a computer-based numerical control function unit (NC) and a programmable controller function unit (PC). The numerical control device 2 follows the instructions of the machining program 53 to read the spindle motors 8 and X.
An axis feed command is given to the axis servomotor 18 and the Z axis servomotor 18, and an indexing command is given to the indexing motor 20.

The operation of the above configuration will be described. As shown in FIGS. 3 and 4, on the spindle chuck 7 in which the work holding jigs 25 and 26 are attached to the work holding bases 22 and 23,
The work W is gripped. In this gripping state, when desired, the work W is moved in the left-right direction (X-axis direction) together with the work holding jigs 25 and 26 by a numerical control command by the pin-shaped actuating member 52 attached to the turret type tool supporting means 5. It is moved in parallel (sliding movement) (FIG. 4 (B)) or is swung in the plane direction. As a result, a desired portion of the work W can be turned without changing the work W.
Therefore, conventional index chucks (hydraulic, pneumatic)
It is possible to perform turning processing in multiple parts or in multiple directions, which is not possible with. For example, as shown in FIG. 4 (B), turning can be performed by positioning the center of the processing portion Wa of the work W at the spindle center O. The work position change command 54 to the spindle chuck 7 is issued by the turret type tool support means 5.
Of the turret type tool supporting means 5 for pushing the shift base 28 of the chuck 7 by the operating member 52 and the feed command of each axis. The spindle 6 is controlled so as to stop at the indexing angle (for example, this position is the “origin position”) at which the work gripping bases 22 and 23 come to a predetermined rotation position when the rotation is stopped. As one of the commands constituting the change command 54, a command for stopping the spindle 6 at the origin position may be included.

A specific operation for changing the work position will be described.
When the work W is rotated 180 °, that is, when the work W is turned upside down, as shown in FIGS. 9 and 10, the actuating member 52 is applied to the actuating member engaging portion 51 of the shift base 28.
This is performed by pushing the operating member 52 in a predetermined direction by moving the turret type tool supporting means 5. As a result, the shift base 28 rotates together with the index rotary base 27. Indexing turntable 27
Because the pin 34 is engaged with the hole 33 at the center,
It rotates around the pin 34 smoothly and without displacement. Also, during this rotation, the pin 34
Is raised by the pin driving means 35, and the hole 55 of the shift base 28 is
Also fit it. This prevents the shift base 28 from being pushed by the operating member 52 and sliding unexpectedly. To rotate the shift base 28 by pressing the operating member 52, for example, after rotating it by 90 °, the operating member 52 is reapplied to the operating member engaging portion 51 adjacent to the shift base 28 so that the remaining 90 ° is rotated. To By rotating the operating member 52 in two small portions in this manner, the shift base 28 can be rotated by 180 ° within a small operating range.

When the shift base 28 rotates, the shift base 28
The work holding jig 25 attached to the workpiece also rotates, and the work holding jig 26 facing the work holding jig 25 also
Since both jigs 25 and 26 are connected by the connecting member 42,
Rotate together. In this way, the work W is rotated by 180 ° with respect to the spindle chuck 7. When the 180 ° rotation of the shift base 28 is completed, the locking pin 45 of the first fixing / releasing means 43 (FIG. 5) is engaged with the hole 44 of the index rotary base 27. As a result, the rotation angles of the index rotary table 27 and the shift table 28 are fixed, the work W is prevented from swinging during processing, and high-precision processing can be performed.

As shown in FIG. 4, when the work W is laterally moved, the pin 34 of the first fixing / releasing means 43 is pulled out downward from the hole 55 of the shift base 28. In this state, the operating member 52 is connected to the operating member engaging portion 51 of the shift base 28.
And the turret type tool supporting means 5 is moved,
Push 2 in the slide movement direction. In this way shift table 28
By pressing the key,
At 8, the work gripping base 22 and the index rotary table 27 are guided by the key grooves 36 and 37 to slide. In this case, the shift base 28 has the index rotary base 2 at the original center position.
When the plunger 48 of the second fixing / releasing means 47 installed in FIG. 7 engages with the locking recess 49 on the lower surface and is positioned, and is pushed by the operating member 52, the plunger 48
Will be retracted and moved against the spring force.
When the shift base 28 reaches a predetermined slide movement position, the engaging element of the plunger 48 elastically engages with the locking recess 49 provided on the lower surface corresponding to the position, and the shift base 28 is fixed (Fig. 8). Since the shift base 28 is fixed in this way, it is possible to prevent the work W from swinging during processing and thus lowering the processing accuracy. In this example, the shift base 28 is positioned at three locations, the center and the left and right ends. Even when the shift base 28 is slid, the work holding jig 25 attached to the shift base 28 also slides, and the work holding jig 2 facing the work holding jig 25.
6 also slides together since both jigs 25 and 26 are connected by the connecting member 42. In this way, the work W is slid with respect to the spindle chuck 7.

In this numerical control machine, the working member 52 thus mounted on the turret type tool supporting means 5 is moved by the movement of the turret type tool supporting means 5, so that the work W held by the spindle chuck 7 is moved. The gripping state can be changed to the rotation direction and the slide movement direction without changing the holding position. Whether to rotate or slide the work W can be selected by the direction in which the operation member 52 pushes. That is, when the work holding jig 25 is slid, the actuating member 52 is moved in a direction parallel to the sliding direction of the work holding jig 25 that passes through the rotation axis Q of the work holding jig 25. Work grip jig 25
When rotating the workpiece holding jig 25, the workpiece holding jig 25 is moved in a direction not passing through the rotation axis Q. In addition, in this embodiment, when the rotational movement is performed, the pin 34 at the center of the indexing rotary table 27 is inserted to the hole 55 of the shift table 28.
The work holding jig 25 does not slide unexpectedly when pushed by the operating member 52. In this embodiment, the sliding movement is performed only when the work gripping jig 25 is at a predetermined rotation angle, that is, when the key groove 37 of the indexing rotary table 27 is aligned with the key groove 36 of the work gripping base 22. Only possible. Further, the rotational movement is performed by the work holding jig 2
It is performed only when 5 is at the center of the sliding direction.

In the above embodiment, the work holding jig 22 can be slid only in the lateral direction (X-axis direction), but may be slidable in the front-rear direction (Z-axis direction). Further, in the above embodiment, the pair of work gripping bases 22 and 23 facing the spindle chuck 7 is provided, and one work gripping base 22 is fixed.
Both workpiece holding bases 22 and 23 may be movable toward the spindle center O.

[0028]

[0029]

According to the numerical control machine of the present invention, a spindle chuck for gripping a work and a tool for machining the gripped work are attached, and the tool can be moved in order to move the tool toward and away from the work. And a tool supporting means for supporting the spindle chuck.
Has two work gripping bases arranged opposite to each other on the front surface,
One workpiece gripping base is the chuck of this spindle chuck.
The work gripping base on the other side is fixed to the
Check the radial movement toward the center of the pindle.
It is installed on the main body of the backpack and has a spin on the fixed-side workpiece holding base.
On the surface of the spindle center side, the index rotary table is
This index is installed rotatably around the orthogonal rotation axis.
Slide it on the turntable in the direction perpendicular to the axis of rotation.
A shift base is installed so that it can be moved.
Hold the workpiece on the opposite surface of the workpiece gripping base.
Each holding jig is attached, and the spindle chuck is
Actuating said workpiece gripping tool having an indexing function of the rotation angle of the positioning function for positioning to a predetermined position, the tool supporting means having a workpiece gripping tool in a predetermined posture to the tool supporting means Since it is moved by a member, it is possible to process a desired portion of the work with a simple structure without changing the work and to make the structure compact. Further, when the work gripping jig is slid, the operation member is moved in a direction parallel to the sliding direction of the work gripping jig passing through the rotation center of the work gripping jig to rotate the work gripping jig. In some cases , the work holding jig is moved in a direction that does not pass through the rotation center of the work holding jig. Therefore, the slide movement and the rotation movement can be selectively performed only by devising the movement direction of the operating member.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a front view of a numerical control machine according to an embodiment of the present invention and a block diagram of its control system.

FIG. 2 is a plan view of the same numerical control machine.

FIG. 3 is a side view of a spindle chuck of the numerical control machine.

FIG. 4 is a front view of each operating state of the spindle chuck.

FIG. 5 is an enlarged cutaway side view of the spindle chuck.

6 is a sectional view taken along line V1-V1 of FIG.

FIG. 7 is an enlarged cutaway front view of the spindle chuck.

FIG. 8 is an enlarged cutaway front view showing an operation state of the spindle chuck different from that in FIG. 7.

FIG. 9 is a plan view of a work gripping base of the spindle chuck.

FIG. 10 is a plan view showing an operation state of the work gripping base different from that in FIG. 9;

[Explanation of symbols]

1 ... Machine main body 40 ... Guide pin 2 ... Numerical control device 41 ... Guide groove 3 ... Frame 42 ... Connecting material 4 ... Spindle base 43 ... First fixing / releasing means 5 ... Tool support means 44 ... Hole 6 ... Spindle 45 ... Locking pin 7 ... Spindle chuck (workholding means) 46 ... Locking pin driving means 11, 12 ... Tool 47 ...
Second fixing / releasing means 21 ... Chuck body 48 ...
Plunger 22, 23 ... Work gripping base 49 ...
Locking recesses 25, 26 ... Work holding jig 51 ...
Operating member engaging portion 27 ... Indexing rotary table 52 ...
Actuating member 28 ... Shift base S ...
Tool station 33 ... Hole O ...
Spindle center 34 ... Pin Q ...
Rotation axis 35 ... Pin driving means W ...
Work 36, 37 ... Keyway Wa ...
Processing part 38 ... key

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-185919 (JP, A) Actual development 4-92740 (JP, U) Actual public 62-4409 (JP, Y1) Actual public 62- 4408 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B23B 31/36 B23B 31/34 B23Q 16/00

Claims (8)

(57) [Claims] 1. A workpiece is gripped.Spindle chuck
And a tool for machining the gripped work is attached.
Is moved to move the tool closer to or further from the work.
With movable tool support means,The spindle chuck is paired with the center of the spindle in between.
It has two work gripping bases arranged facing each other on the front side
The workpiece gripping base is the chuck of this spindle chuck.
It is fixed to the main body and the other work holding base is spin
Chuck to move in the radial direction toward the center of the dollar
It is installed on the main body of the work and is used to spin the work holding base on the fixed side.
The index rotary table is orthogonal to the spindle center on the surface on the center side of the spindle.
It is installed rotatably around the axis of rotation to
Can be slid on the table in the direction orthogonal to the axis of rotation.
Noh is equipped with a shift stand, and this shift stand and the movable side work
Work gripping work that grips the work on the opposite surface of the gripping base.
Each tool is attached and the spindle chuck is , The above
Positioning machine that positions the workpiece gripping jig in a predetermined posture
A function to determine the rotation angleHave, The tool supporting means is a work holding jig in a predetermined posture.
Is moved by an operating member provided on the tool supporting means.
As this movement, slide the work holding jig.
When moving, before passing through the center of rotation of the workpiece gripping jig
The operating member is arranged in a direction parallel to the sliding direction of the shift base.
When moving the work gripping jig
Moves in a direction that does not pass through the center of rotation of the work holding jig.
MoveNumerical control machine. 2. A pre-SL tool supporting means is provided with a tool that performs turning in contact with a workpiece being rotated, the spin
2. The numerical control machine according to claim 1, wherein the work holding jig is moved by the operating member so that the center of the work portion of the work is located on the axis of the spindle chuck . 3. The shift base is provided at a plurality of positions on the outer peripheral surface,
An operating member engaging portion with which the operating member is engaged is provided.
The numerical control machine according to claim 1 or 2. 4. The both work holding jigs are used as jig connecting materials.
Are connected so that they can move only in the direction of approaching and separating from each other.
According to any one of claims 1 to 3 ,
Numerical control machine. Wherein said workpiece gripping means, said workpiece holding jig is fixed at a predetermined position, claims 1 and has a releasable fixing / release means fixed when moving
The numerical control machine according to claim 4 . 6. The numerical control machine according to claim 5 , wherein the fixing / releasing means includes a plunger and a locking recess with which the plunger engages. 7. A pin for supporting a rotation center of the work gripping jig is provided when the work gripping jig is rotated.
The numerical control machine according to any one of claims 1 to 6 . 8. The numerical control machine according to claim 1.
One of the two work gripping bases that are placed facing each other
The workpiece gripping base of this spindle chuck
It is fixed to the main body and the other workpiece holding base is spun
Chuck so that it can move radially toward the center
Instead of being installed in the main body, 2 placed opposite to each other
Place both workpiece gripping bases toward the spindle center.
Installed on the chuck body so that it can be moved in the radial direction.
Numerical control machine.