JP2010184269A - Rotating type plastic working apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably receive working reaction force from a workpiece due to working in a suitably dispersed state and achieve improvement of working accuracy by reducing moment which a specified member constituting a device receives and reducing distortion generated during working. <P>SOLUTION: A rotating type plastic working apparatus includes: a drive rotating mechanism 16; a working body 2 for carrying out plastic working by being abutted to the workpiece 4; and a three axis positioning mechanism 3 for positioning the working body 2 in a three axis direction. The rotating type plastic working apparatus includes a first holding frame 10 movable in a Z axis direction to the base 6b of the working device; and a second holding frame 11 held by the first holding frame 10 and movable in an X axis direction to the first holding frame 10. The support part L1 in a Z direction of the first holding frame 10 to the base 6b of the working device is arranged at a pair of positions in the Z axis direction. In the Z axis direction, the working-action position 30 of the working body to the workpiece 4 is located between the support parts L1 in the Z direction of a pair of the first holding frames. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotary plastic processing apparatus such as a spinning processing apparatus or a rolling apparatus.

Hereinafter, a spinning processing apparatus as an example of a rotary plastic processing apparatus will be described as an example.
The spinning device is a device for processing a workpiece into a shape along the outer peripheral surface of the mold (so-called plastic processing) by pressing the roller against the outer peripheral surface of the workpiece and moving the roller along the outer peripheral surface. There is (for example, Patent Document 1).

Patent Document 1 discloses a spinning processing apparatus including a plurality of rollers.
As shown in FIG. 3 of Patent Document 1, the spinning processing apparatus disclosed in this document is provided with three rollers around a mandrel and can perform processing. Here, the reason why the spinning machine is equipped with different rollers is that, for example, a heavy processing roller and a light processing roller are appropriately selected and used according to the progress of processing, the shape after processing, and the like. This is to proceed.
In the spinning device disclosed in Patent Document 1, as shown in FIG. 4 of Patent Document 1, the roller is in the X direction, which is a direction approaching / separating from the main shaft, and Z, which is a direction along the main shaft. It can be moved and positioned freely in any direction.
Which roller is used for processing is selected by appropriately selecting the position of each roller in the X direction.

JP 2007-283181 A

  In the spinning device described in Patent Document 1, the roller bearings are each supported in a cantilevered state by a holding frame that is movable in a predetermined direction. That is, this configuration is shown in an exploded manner in FIG. FIG. 4A is a plan view, and FIG. 4B is a front view. That is, in this apparatus, the first holding frame F1 movable in the Z-axis direction of the apparatus main body is projected to one side (lower side in (a)) with respect to the apparatus main body frame F0 fixed to the processing apparatus. A second holding frame F2 is provided that is movable and positioned in the X-axis direction (right side in (a) and (b)) in a state of penetrating the protruding portion of the first holding frame F1.

  In this spinning processing apparatus, the roller R receives a processing reaction force in the left direction as indicated by a hollow solid line arrow from the workpiece, so that the bending moment about the axis Dz is applied to the movement / positioning mechanism in the Z-axis direction. Receive M. Further, as can be seen from (b), since the second holding frame F2 is directly subjected to the processing reaction force, the first holding frame F1 and the second holding frame F2 need to have a relatively rigid structure. ing.

  Moreover, it is necessary to equip the number of rollers with two-axis positioning mechanisms capable of moving and positioning such rollers in the X-axis direction and the Z-axis direction, respectively, and the apparatus disclosed in Patent Document 1 is naturally heavy. The cost was high.

  The present invention has been made in view of such circumstances, and its purpose can be stably received in a state in which the processing reaction force received from the workpiece along with the processing is well dispersed, An object of the present invention is to obtain a rotary plastic processing apparatus capable of reducing the moment generated by a specific member constituting the apparatus, reducing distortion generated during processing, and improving processing accuracy.

In order to achieve the above object, the characteristic configuration of the rotary plastic working apparatus according to the present invention is as follows:
A drive rotation mechanism that rotates a molding die and a workpiece to be plastically processed along the shape of the molding die around a main axis;
A workpiece that contacts the workpiece in a rotating state and plastically processes the workpiece into a shape that conforms to the shape of the mold, and
The workpiece is positioned in three axial directions: an X-axis direction approaching / separating from the main axis, a Z-axis direction parallel to the main axis, and a Y-axis direction orthogonal to the X-axis direction and the Z-axis direction. A three-axis positioning mechanism;
A control device that operates the triaxial positioning mechanism to plastically process the workpiece into a shape that conforms to the shape of the mold;
A first holding frame that is movable in the Z-axis direction with respect to the processing apparatus base;
A second holding frame that is held by the first holding frame and is movable in the X-axis direction with respect to the first holding frame;
The three-axis positioning mechanism is configured to position the workpiece through the first holding frame and the second holding frame.
Z-direction support portions of the first holding frame with respect to the processing apparatus base are provided at a pair of positions in the Z-axis direction,
In the Z-axis direction, the machining operation position of the workpiece relative to the workpiece is located between the Z-direction support portions of the pair of first holding frames.

In the rotary type plastic working apparatus having this configuration, the rotation of the workpiece is ensured by the drive rotation mechanism.
Then, the workpiece can be positioned and processed in the X-axis, Y-axis, and Z-axis directions by the three-axis positioning mechanism while the workpiece is rotated.
The processing of the workpiece is performed mainly by positioning in the X-axis direction and the Z-axis direction, as described in the prior art. Here, the positioning in the Y-axis direction can also be used for adjusting the machining state, and if different workpieces are held in the Y-axis direction, machining by these different workpieces can be appropriately executed. .
In the structure of the present application, the workpiece is supported by the Z-axis direction support portion provided at a pair of positions in the Z-axis direction on the processing apparatus base via the second holding frame and the first holding frame. Then, in the Z-axis direction, the machining operation position of the workpiece relative to the workpiece is positioned between the Z-direction support portions of the pair of first holding frames. As a result, the machining reaction force received by the workpiece along with the machining is transmitted to the machining apparatus base via the second holding frame and the first holding frame, which sandwich the machining action position in the Z-axis direction. Since it is distributed at the position of the Z-axis direction support portion, the machining reaction force can be received by each frame and the machining apparatus base in a stable and relatively uniform state, and highly accurate and stable machining can be executed.

In the above configuration,
In order to hold the first holding frame movably in the Z-axis direction by the processing device base, the first holding frame is moved from the processing device base between the processing device base and the first holding frame. A slide mechanism for movably holding in the Z-axis direction, and a Z-axis direction drive mechanism for moving the first holding frame in the Z-axis direction with respect to the processing apparatus base;
The Z-axis direction drive mechanism includes a drive shaft that rotates about an axis at a predetermined position in the Z-axis direction, and a driven part that moves in the Z-axis direction as the drive shaft rotates. ,
In the Y-axis direction, it is preferable that a machining operation position of the workpiece with respect to the workpiece is the same position as the drive shaft of the Z-axis direction drive mechanism.

  In this configuration, in the Y-axis direction, the machining operation position of the workpiece with respect to the workpiece is located at the same position as the drive shaft of the Z-axis direction drive mechanism, so that the moment as described above with reference to FIG. Generation can be suppressed and stable machining can be performed.

Now, in the configuration described so far,
In order to hold the second holding frame movably in the X-axis direction by the first holding frame, between the second holding frame and the first holding frame,
A slide mechanism for movably holding the second holding frame from the first holding frame in the X axis direction is provided, and the second holding frame is moved in the X axis direction with respect to the first holding frame. An axial drive mechanism is provided,
In the Z-axis direction, it is preferable that a processing action position of the workpiece on the workpiece is positioned between the slide mechanism and the X-axis direction driving mechanism.

  In this configuration, the slide mechanism and the X-axis direction driving mechanism are provided between the first holding frame and the second holding frame, and the second holding frame is supported from the first holding frame by both mechanisms. However, in the Z-axis direction, the machining action position of the workpiece relative to the workpiece is located between the slide mechanism and the X-axis direction drive mechanism, so that the machining reaction force is received at the intermediate position between the two mechanisms. The reaction force can be dispersed well, and highly accurate and stable machining can be performed.

Further, in order to hold the second holding frame movably in the X-axis direction by the first holding frame, the first holding frame is moved between the first holding frame and the first holding frame. A slide mechanism for movably holding the second holding frame in the X-axis direction, and an X-axis direction driving mechanism for moving the second holding frame in the X-axis direction with respect to the first holding frame;
The X-axis direction drive mechanism includes a drive shaft that is rotated about an axis at a predetermined position in the X-axis direction, and a driven portion that is moved in the X-axis direction as the drive shaft rotates. ,
If a configuration is adopted in which the machining action position of the workpiece relative to the workpiece is positioned on the axis of the X-axis direction drive mechanism, the machining action position is arranged on the axis of the drive shaft. Therefore, it is possible to avoid the generation of unnecessary moments and realize more accurate and stable machining.

  The above is the characteristic configuration of the rotary plastic processing apparatus according to the present application mainly in the processing apparatus base, the first holding frame, the second holding frame, and the processed body. Hereinafter, the processed body is moved and positioned in the Y-axis direction. A configuration to be described will be described.

That is, in the configuration described so far,
A third holding frame that is held by the second holding frame and is movable in the Y-axis direction with respect to the second holding frame;
It is preferable that the three-axis positioning mechanism employs a configuration in which the workpiece is positioned through the first holding frame, the second holding frame, and the third holding frame.
In this way, the first holding frame can be positioned in the Z-axis direction, the second holding frame can be positioned in the X-axis direction, and the third holding frame can be positioned in the Y-axis direction, and a nested structure is adopted between the frames. Thus, a useful triaxial positioning mechanism can be realized with a relatively simple configuration.

And in the structure provided with said 3rd holding frame,
In the second holding frame, a Z-axis direction support portion of the third holding frame is provided at a pair of positions in the Z-axis direction,
In the Z-axis direction, it is preferable that a processing action position of the workpiece with respect to the workpiece is positioned between the Z-axis direction support portions of the pair of third holding frames.
In the case of this configuration, the machining reaction force received by the workpiece along with machining is transmitted to the first holding frame via the third holding frame and the second holding frame, but they are processed in the Z-axis direction. Since the positions are distributed across the positions, the processing reaction force can be received by each frame and the processing apparatus base body in a stable and relatively uniform state, and highly accurate and stable processing can be executed.

On the other hand, between the second holding frame and the third holding frame, a slider and a slide mechanism including a rail in which the slider moves in the Y-axis direction are provided.
The position of the Z-axis direction support portion of the third holding frame is the position of the slider in the slide mechanism in the Z-axis direction,
If the machining action position of the workpiece with respect to the workpiece is adopted as the position of the specific slider in the Z-axis direction, the machining reaction force can be received by the specific slider, and an unnecessary moment can be generated. Generation can be prevented as much as possible.

Regarding the dispersion of the reaction force in the Y-axis direction,
In the second holding frame, Y-axis direction support portions of the third holding frame are provided at a pair of positions in the Y-axis direction,
In the Y-axis direction, it is preferable to adopt a configuration in which the processing action position of the workpiece relative to the workpiece is positioned between the Y-axis direction support portions of the pair of third holding frames.
In the case of this configuration, the machining reaction force received by the workpiece along with machining is distributed to the position where the machining action position is sandwiched in the Y-axis direction with respect to transmission from the third holding frame to the second holding frame. Therefore, the processing reaction force can be received by the second holding frame and the processing apparatus base body in a stable and relatively uniform state, and highly accurate and stable processing can be executed.

  Up to now, although the direction of each axis has not been specified, the direction of the main axis and the Z-axis direction are vertical directions, the X-axis direction is defined in a horizontal plane, and the direction of approaching and separating from the main axis In this case, a vertical rotary type plastic working device can be realized.

  In addition, when the workpiece is a roller that rotates about the rotation axis, a spinning processing device having the characteristic configuration of the present application can be realized.

  Furthermore, as this type of roller, a heavy processing roller having a larger curvature radius at the machining end and a light machining roller having a smaller curvature radius at the machining end than the heavy processing roller in a cross section along the rotation axis of the roller are selected. In particular, if it is configured so that it can be used for processing, heavy processing and light processing can be executed while exchanging the rollers. Naturally, by adopting the structure in which these rollers are supported by the third holding frame described above, the rollers can be replaced by movement in the Y-axis direction.

Front view of a vertical spinning machine according to the present application Plan view of a vertical spinning machine according to the present application The perspective view which shows the operating state of a 3-axis positioning mechanism Exploded perspective view of 3-axis positioning mechanism Longitudinal sectional view along the X-axis direction of the 3-axis positioning mechanism Horizontal sectional view along the Y-axis direction of the 3-axis positioning mechanism at the slider position on the upper side in the Z-axis direction Horizontal sectional view along the Y-axis direction of the 3-axis positioning mechanism at the lower slider position in the Z-axis direction The figure which shows the operating state of the roller for heavy processing, and the roller for light processing The figure which shows the structure of the axial direction cross section of the roller for heavy processing, and the roller for light processing Vertical sectional view along the X-axis direction of the triaxial positioning mechanism of another embodiment Illustration of prior art

  Hereinafter, a vertical spinning apparatus 1 as an example of a rotary plastic working apparatus according to the present application will be described with reference to the drawings.

  Specifically, FIG. 1 shows a state in which a vehicle wheel is formed by spinning an aluminum casting material that is a workpiece 4 by using a vertical spinning machine 1.

  In the description, first, a schematic configuration of the vertical spinning processing apparatus 1 will be described, and then a support structure for a workpiece that is a characteristic configuration of the present application will be described.

[Schematic configuration of vertical spinning machine]
Frame Structure As shown in FIGS. 1 and 2, the vertical spinning machine 1 includes a lower fixing frame 5 provided at the lower part of the apparatus, three columnar fixing frames 6 erected on the lower fixing frame 5, and The upper fixed frame 7 is provided on the upper part of the three columnar fixed frames 6. The columnar fixed frame 6 includes a single columnar fixed frame 6a provided on the left side and a pair of columnar fixed frames 6b provided on the right side.
The lower fixed frame 5, the columnar fixed frame 6, and the upper fixed frame 7 form a processing apparatus base in the present application.

  A spindle motor M1 for rotating the workpiece 4 around the spindle is disposed on the left side of the lower fixed frame 5.

  The lower fixed frame 5 is formed in a square shape when viewed from the front, and in plan view, supports a narrow base portion 5a substantially matching the width of the adapter 9 on the left side and a pair of columnar fixed frames 6b on the right side. It is configured to include a wide gantry 5b having a width that can be achieved. Between the pair of columnar fixed frames 6b, a first holding frame 10 and a second holding frame 11, which will be described later, are positioned. A configuration in which the width of the lower fixed frame 5 is sequentially enlarged is adopted between the narrow base 5a and the wide base 5b.

  On the right and upper peripheral portions of the lower fixed frame 5 (the right region in FIG. 1 and the upper region in FIG. 2), a device mounting base 13 on which a predetermined device is mounted is provided. In the illustrated example, a hydraulic pressure generating device 14 that generates hydraulic pressure used in the processing apparatus 1 is mounted on the upper portion of the device mounting base 13 positioned on the right side with respect to the lower fixed frame 5. In FIG. 2, a control device case 15 fixed to the device mounting stand 13 when the device is moved is placed on the upper portion of the device mounting stand 13 positioned above the lower fixed frame 5. Yes. The control device C is housed in the control device case 15.

  Therefore, the upper fixed frame 7 has a shape similar to the shape of the lower fixed frame 5 in plan view.

Main Processing Mechanism As a main processing mechanism, a vertical spinning processing apparatus 1 according to the present application includes a drive rotation mechanism 16, a roller 2, a triaxial positioning mechanism 3, and a control device C.

The vertical spinning processing apparatus 1 includes an adapter 9 that rotates around a main axis D. A molding die 17 is disposed on the adapter 9 and the workpiece is in contact with the molding die 17. 4 is subjected to spinning processing (plastic processing). In the case of this example, the workpiece 4 is a wheel material that has been processed on one end side (the upper end side shown in FIG. 1). The rotation of the adapter 9 is executed by the spindle motor M1 described above.
Therefore, the drive rotation mechanism 16 is configured to rotate the workpiece 17 to be plastically processed along the shape of the mold 17 and the mold 17 around the main axis D.

  Further, as shown in FIG. 1, a tailstock mechanism 18 for pressing and fixing the workpiece 4 attached to the mold 17 from above is disposed above the mold 17. The tailstock mechanism 18 includes a pressing tool 18a that abuts on the workpiece 4 and biases the adapter 9 and a moving mechanism 18b such as a hydraulic cylinder that moves the pressing tool 18a up and down. . The pressing tool 18 a is configured to be driven to rotate as the workpiece 4 rotates.

Workpiece, three-axis positioning mechanism and control device The vertical spinning processing device 1 includes a roller 2 for spinning (plastic processing) a workpiece 4 rotating around a main axis D on an adapter 9. The roller 2 is also configured to rotate following the rotation of the workpiece 4.
Further, the vertical spinning processing apparatus 1 includes the roller 2 in the X-axis direction (the left-right direction in FIG. 1) approaching and separating from the main axis D, and the Z-axis direction (the up-down direction in FIG. 1) parallel to the main axis D. And the three-axis positioning mechanism 3 for positioning in the three-axis directions in the Y-axis direction (the front and back direction in FIG. 1) perpendicular to the X-axis direction and the Z-axis direction, and the workpiece 4 along the shape of the molding die 17. A control device C for operating the triaxial positioning mechanism 3 is provided for plastic processing into a shape.

  That is, in the vertical spinning processing device 1, the control device C stores in advance information to maintain the position of the roller 2 with respect to the workpiece 4 at a position suitable for processing, and this information is triaxial positioning. By being sent to the mechanism 3, it is possible to perform processing while appropriately setting the position of the roller 2.

Briefly describing the triaxial positioning mechanism 3, the roller 2 is held by a third holding frame 12, the third holding frame 12 being a second holding frame 11, and the second holding frame 11 being a first holding frame 10. The roller 2 is positioned by properly positioning the three holding frames 10, 11, and 12 while being held in a nested state.
With respect to the Z-axis direction parallel to the main axis D, the first holding frame 10 can be moved and positioned in the Z-axis direction with respect to the pair of columnar fixed frames 6b by the Z-axis motor M3.
With respect to the X-axis direction, which is the approaching / separating direction with respect to the main shaft D, the X-axis motor M2 is configured so that the second holding frame 11 can be moved and positioned in the X-axis direction with respect to the first holding frame 10. .
With regard to the Y-axis direction, the third holding frame 12 is configured to be movable and positionable in the Y-axis direction with respect to the second holding frame 11 by the Y-axis hydraulic cylinder S1.
The direction of the main axis D and the Z-axis direction are vertical directions, the X-axis direction is defined in a horizontal plane, and is a direction in which the main axis D approaches and separates from the main axis D. Therefore, the Y-axis direction is a direction orthogonal to the X-axis in the horizontal plane.

  As shown in FIGS. 4, 8, 9, etc., in this example, a pair of rollers 2 a and 2 b are held by the third holding frame 12 as the roller 2. That is, as the roller 2, as shown in FIG. 9, in a cross section along the roller axis, a heavy processing roller 2a having a large curvature radius at the machining end and a light radius having a smaller curvature radius at the machining end than the heavy processing roller 2a. A processing roller 2b is provided. Then, by the positioning in the Y-axis direction, spinning processing can be performed by selectively using the heavy processing roller 2a and the light processing roller 2b. FIG. 8A shows a state where processing is performed by the heavy processing roller 2a, and FIG. 8B shows a state where processing is performed by the light processing roller 2b.

  Further, as shown in FIG. 6, on the side where the third holding frame 12 is disposed with respect to the main axis D (on the right side of the main axis D in FIG. 6), the rotation base end side of the main axis D (see FIG. 6, a heavy processing roller 2a is disposed on a clockwise arrow base end side (6), and a light processing roller 2b is disposed on a rotating front end side (arrow end side in FIG. 6).

  In normal processing, the processing is performed with the heavy processing roller 2a fixed at a predetermined position in the Y-axis direction. On the other hand, after the processing by the heavy processing roller 2a, processing is performed while the light processing roller 2b is variably set in the Y-axis direction.

Heating mechanism The vertical spinning processing apparatus 1 is provided with a heating mechanism 19 for heating the workpiece 4 on the adapter 9. The heating mechanism 19 is a flame formed by a burner 19 a provided in the heating mechanism 19. The material 4 can be heated appropriately. As shown in FIG. 2, the heating portion by the heating mechanism 19 is set at a circumferential position different from the contact portion where the roller 2 contacts the workpiece 4.

Operation Device The vertical spinning processing device 1 is provided with a separate operation panel 20 and configured to be able to execute operations such as start / end of machining from the operation panel 20.

The above is the schematic configuration of the vertical spinning processing apparatus 1 according to the present application. Hereinafter, the configuration centering on the triaxial positioning mechanism 3 that is a feature of the present application will be described.
As described above, in this example, the first holding frame 10 is in the Z-axis direction with respect to the pair of columnar fixed frames 6b forming the processing apparatus base, and the second holding frame 11 is with respect to the first holding frame 10 in the X-axis direction. Further, the third holding frame 12 is configured to be movable and positionable in the Y-axis direction with respect to the second holding frame 11.

Each frame is connected by a slide mechanism SM including a rail R disposed on one frame and a slider L movable in the longitudinal direction of the rail R. Each will be described below.
As shown in FIGS. 3 and 4, each of the pair of columnar fixing frames 6b includes a rail R1 and the first holding frame 10 includes four (two pairs) sliders L1. Thus, the first holding frame 10 is movable in the Z-axis direction.

Specifically, each of the pair of columnar fixed frames 6b includes a pair of rails R1 in the Z-axis direction on the surface on the main shaft side.
As shown in FIGS. 3, 4, 5, and the like, the first holding frame 10 includes a main plate side plate 10b having a square second holding frame insertion hole 10a on the center side, and an anti main shaft of the main shaft side plate 10b. The second holding frame storage portion 10c is extended to the side and opened in the upper part. The second holding frame storage portion 10c includes a bottom plate 101 and a pair of side plates 102 connected to the main shaft side plate 10b on the main shaft side, and an anti-main shaft connected to the opposite main shaft side of the bottom plate 101 and the pair of side plates 102. A side plate 103 is provided.

A pair of sliders L1 paired in the Y-axis direction are provided on the lower side and the upper side in the Z-axis direction of the second holding frame insertion hole 10a on the surface on the opposite side of the spindle-side plate 10b.
As shown in FIG. 5, a ball screw type linear motion mechanism (an example of an X-axis direction drive mechanism) RDx that moves the second holding frame 11 in the X-axis direction with respect to the first holding frame 10 is the X-axis motor described above. An X-axis direction rotational drive shaft (an example of a drive shaft) Dx that is a screw shaft extending from M2 and a driven portion 104 that is substantially a ball screw nut provided in the second holding frame 11 are configured.

  Further, the Z-axis motor M3 is fixed to the upper fixed frame 7, and the first holding frame 10 is fixed by a ball screw type linear motion mechanism RDz extending from the Z-axis motor M3 in the Z-axis direction. It can be moved and positioned in the Z-axis direction. The ball screw type linear motion mechanism RDz includes a Z-axis direction rotational drive shaft Dz that is a screw shaft extending from the Z-axis motor M3 and a driven portion 111 that is substantially a ball screw nut provided in the first holding frame 10. Has been.

  As shown in FIG. 7, four (two pairs) sliders L2 are provided on the upper side of the bottom plate 101 constituting the first holding frame 10, and a pair of rails R2 are provided on the lower side of the second holding frame 11. The second holding frame 11 is movable in the X-axis direction with respect to the one holding frame 10.

As shown in FIGS. 5, 6, and 7, the second holding frame 11 is configured in a generally box shape, and a pair of rails R <b> 2 extending in the X-axis direction are provided below the bottom surface of the second holding frame 11. Yes.
Accordingly, the second holding frame 11 is movable and positioned in the X-axis direction as the X-axis motor M2 rotates while being guided in the X-axis direction on the slider L2 provided on the first holding frame 10. .

  On the side surface of the main shaft of the second holding plate 11, four (two pairs) sliders L3 are provided. The two pairs of sliders L3 are respectively arranged in the Y-axis direction. A pair of rails R <b> 3 extending in the Y-axis direction is provided on the opposite side of the third holding frame 12, and the third holding frame 12 is movable in the Y-axis direction with respect to the second holding frame 11.

As shown in FIGS. 5, 6, and 7, the third holding frame 12 is configured in a substantially plate shape, and includes a roller support portion 2 s that supports the roller 2 on the side surface of the main shaft and an anti-main shaft. A rail R3 extending in the Y-axis direction is provided on the side surface. Further, the second holding frame 11 is provided with a cylinder body S1a of a Y-axis hydraulic cylinder S1 extending in the Y-axis direction, and the piston shaft S1b of the Y-axis hydraulic cylinder S1 is attached to the third holding frame 12. Connected and provided.
Accordingly, the third holding frame 12 is guided in the Y-axis direction on the slider L3 provided on the second holding frame 11, while the piston shaft S1b provided on the Y-axis hydraulic cylinder S1 extends and retracts. The third holding frame 12 is movable / positionable in the Y-axis direction.

  As can be seen from FIG. 6, the pair of roller support portions 2s are configured to support the pair of rollers 2 (2a, 2b). Each is configured to rotate freely.

  The configuration of the triaxial positioning mechanism 3 has been described above. In the present application, the abutting portion (machining operation position 30) where the roller 2 abuts on the workpiece 4, the slider mechanism SM, and the ball screw type A configuration having a unique positional relationship between the moving mechanisms RDx and RDz is employed.

The following unique configuration is adopted for the Z-axis direction.
As shown in FIG. 5, in the Z-axis direction, a pair of machining action positions 30 are provided between the support portions of the first holding frame 10 with respect to the columnar fixed frame 6b (processing apparatus base) (the first holding frame 10 is provided in the Z-axis direction). Between the slider L1). This support portion is referred to as a Z-axis direction support portion in the present application.
Furthermore, in the Z-axis direction, the machining operation position 30 is configured to be positioned on the axis of the drive shaft Dx provided in the ball screw type linear motion mechanism RDx.
Further, between the second holding frame 11 and the third holding frame 12, the machining operation position 30 is set to the position of the lower slider L3 by a pair of sliders L3 provided in the Z-axis direction. This support portion is also an example of the Z-axis direction support portion in the present application.

  On the other hand, with respect to the Y-axis direction, as can be seen from FIG. 6, the processing operation position 30 is located between the support portions of the pair of third holding frames 12 (between the pair of sliders L3 provided in the Y-axis direction). The configuration to be adopted is adopted. This support portion is referred to as a Y-axis direction support portion in the present application.

Further, as shown in FIG. 6, the machining operation position 30 is set at the same position as the drive axis Dz of the Z-axis direction drive mechanism RDz in the Y-axis direction.
By setting the machining operation position 30 to an appropriate position in this manner, distortion deformation associated with machining can be minimized, machining reliability can be ensured, and generation of vibrations associated with machining can be suppressed.

In the vertical spinning machine 1 according to the present application, the third holding frame 12 includes the heavy processing roller 2a on the rotation base end side of the main shaft D and the light processing roller 2b on the rotation front end side in the Y-axis direction. However, when these processing rollers 2 are used, the piston rod S1b provided in the hydraulic cylinder mechanism S1 is configured to have a special positional relationship with respect to the cylinder body S1a. Has been.
As shown in FIG. 7, in a state in which spinning processing is performed using the heavy processing roller 2a, that is, in a heavy processing state in which the heavy processing roller 2a plastically processes the workpiece 4, the piston rod is related to the cylinder mechanism. S1b is maintained in the extended posture extended from the cylinder body S1a. On the other hand, in a state in which spinning processing is performed using the light processing roller 2b, that is, in a light processing state in which the light processing roller 2b plastically processes the workpiece 4, the piston rod S1b is connected to the cylinder body S1a side with respect to the cylinder mechanism. A configuration is adopted in which a retirement posture that has been retired is maintained. The retracted state here means that the extension amount is smaller than the extension amount of the piston rod S1b in the heavy working state.

In this example, a configuration is adopted in which the piston S1c provided in the piston rod S1b contacts the end S1d of the cylinder body S1a and the end S1d of the cylinder serves as a mechanical restriction mechanism in the heavy processing state. . Therefore, in the heavy machining state, the position is set by a mechanical restriction mechanism that restricts further extension of the piston rod S1b to the extension side.
On the other hand, in the light processing state, a configuration is adopted in which the position of the piston rod S1b in the Y-axis direction is adjusted by the fluid supplied to the cylinder mechanism.

[Another embodiment]
Next, another embodiment will be described.
(A) In the above-described embodiment, the case where the rotary plastic working device is a spinning processing device has been shown. However, while rotating the work material around its axis, a certain member (this member is used in the present application) is rotated. The structure of the present application can be adopted in an apparatus that performs plastic working by abutting a workpiece.
(B) In the above embodiment, a drive rotation mechanism for rotating the workpiece around the main shaft is provided, and the rotation of the roller, which is the workpiece, is a driven rotation configuration that is caused by the rotation of the workpiece. However, the workpiece may be rotated from the roller side.
(C) In the above-described embodiment, the X-axis direction drive mechanism includes a drive shaft that rotates around the axis at a predetermined position in the X-axis direction, and a target that is moved in the X-axis direction as the drive shaft rotates. And a drive unit, and the processing action position of the workpiece relative to the workpiece is set on the axis of the X-axis direction drive mechanism. Although this configuration is preferable, even if it is a slide mechanism, it is possible to receive a certain amount of moment. Therefore, the second holding frame is moved from the first holding frame to the first holding frame between the second holding frame and the first holding frame. Provided is a slide mechanism that is movably held in the X-axis direction, and an X-axis direction drive mechanism that moves the second holding frame in the X-axis direction relative to the first holding frame. It is good also as a structure where the process action position of a process body is located between a slide mechanism and the said X-axis direction drive mechanism. Another embodiment of this configuration is shown in FIG. FIG. 10 corresponds to FIG. 5 in the above embodiment. In FIG. 10, the position in the Z-axis direction of the axis of the X-axis direction drive mechanism that moves the second holding frame in the X-axis direction with respect to the first holding frame is indicated by z <b> 2. The machining action position of the workpiece is indicated by z1, and the position of the axis of the slide mechanism is indicated by z3.
(D) In the above embodiment, between the second holding frame and the third holding frame, the machining operation position is the position of the lower slider L3 with a pair of sliders L3 provided in the Z-axis direction. It is good also as a position between sliders L3 provided.

  As described above, it is possible to stably receive the processing reaction force received from the work piece during processing in a well-distributed state and reduce the moment received by a specific member constituting the apparatus. Thus, it was possible to obtain a rotary plastic processing apparatus capable of reducing the strain generated during processing and improving the processing accuracy.

1 Spinning machine (rotary plastic machine)
2 Roller (workpiece)
2a Heavy Processing Roller 2b Light Processing Roller 3 Triaxial Positioning Mechanism 4 Work Material 6b Columnar Fixed Frame (Processing Device Base)
DESCRIPTION OF SYMBOLS 10 1st holding frame 11 2nd holding frame 12 3rd holding frame 17 Mold 30 Working position 104 Driven part 111 Driven part Dx Drive axis Dz Drive axis L1 Slider (Z-axis direction support part)
L3 slider (Z-axis direction support part / Y-axis direction support part)
SM Slide mechanism R3 Rail RDx X-axis direction drive mechanism RDz Z-axis direction drive mechanism

Claims (11)

A drive rotation mechanism that rotates a molding die and a workpiece to be plastically processed along the shape of the molding die around a main axis;
A workpiece that contacts the workpiece in a rotating state and plastically processes the workpiece into a shape that conforms to the shape of the mold, and
The workpiece is positioned in three axial directions: an X-axis direction approaching / separating from the main axis, a Z-axis direction parallel to the main axis, and a Y-axis direction orthogonal to the X-axis direction and the Z-axis direction. A three-axis positioning mechanism;
A control device that operates the triaxial positioning mechanism to plastically process the workpiece into a shape that conforms to the shape of the mold;
A first holding frame that is movable in the Z-axis direction with respect to the processing apparatus base;
A second holding frame that is held by the first holding frame and is movable in the X-axis direction with respect to the first holding frame;
The three-axis positioning mechanism is configured to position the workpiece through the first holding frame and the second holding frame.
Z-direction support portions of the first holding frame with respect to the processing apparatus base are provided at a pair of positions in the Z-axis direction,
In the Z-axis direction, a rotational plastic working apparatus in which a working action position of the workpiece with respect to the workpiece is located between Z-direction support portions of the pair of first holding frames. To hold the first holding frame movably in the Z-axis direction by the processing apparatus base,
Between the processing apparatus base and the first holding frame,
While providing a slide mechanism for holding the first holding frame movably in the Z-axis direction from the processing apparatus base,
A Z-axis direction drive mechanism for moving the first holding frame in the Z-axis direction with respect to the processing apparatus base;
The Z-axis direction drive mechanism includes a drive shaft that rotates about an axis at a predetermined position in the Z-axis direction, and a driven part that moves in the Z-axis direction as the drive shaft rotates. ,
2. The rotary plastic working apparatus according to claim 1, wherein in the Y-axis direction, a machining action position of the workpiece with respect to the workpiece is set to the same position as the drive shaft of the Z-axis direction drive mechanism. To hold the second holding frame movably in the X-axis direction by the first holding frame,
Between the second holding frame and the first holding frame,
A slide mechanism for movably holding the second holding frame from the first holding frame in the X-axis direction;
An X-axis direction drive mechanism for moving the second holding frame in the X-axis direction with respect to the first holding frame;
3. The rotary type plastic working apparatus according to claim 1, wherein in the Z-axis direction, a machining action position of the workpiece with respect to the workpiece is located between the slide mechanism and the X-axis direction drive mechanism. To hold the second holding frame movably in the X-axis direction by the first holding frame,
Between the second holding frame and the first holding frame,
A slide mechanism for movably holding the second holding frame from the first holding frame in the X-axis direction;
An X-axis direction drive mechanism for moving the second holding frame in the X-axis direction with respect to the first holding frame;
The X-axis direction drive mechanism includes a drive shaft that is rotated about an axis at a predetermined position in the X-axis direction, and a driven portion that is moved in the X-axis direction as the drive shaft rotates. ,
The rotary type plastic working apparatus according to claim 1 or 2, wherein a machining action position of the workpiece with respect to the workpiece is located on the axis of the X-axis direction drive mechanism. A third holding frame that is held by the second holding frame and is movable in the Y-axis direction with respect to the second holding frame;
The rotary plastic working apparatus according to any one of claims 1 to 4, wherein the three-axis positioning mechanism positions the workpiece through the first holding frame, the second holding frame, and the third holding frame. . In the second holding frame, a Z-axis direction support portion of the third holding frame is provided at a pair of positions in the Z-axis direction,
The rotary plastic working apparatus according to claim 5, wherein, in the Z-axis direction, a working position of the workpiece with respect to the workpiece is located between the Z-axis direction support portions of the pair of third holding frames. Provided between the second holding frame and the third holding frame is a slide mechanism comprising a slider and a rail on which the slider moves in the Y-axis direction,
The position of the Z-axis direction support portion of the third holding frame is the position of the slider in the slide mechanism in the Z-axis direction,
The rotary plastic working apparatus according to claim 5, wherein a machining action position of the workpiece with respect to the workpiece is a position of a specific slider in the Z-axis direction. In the second holding frame, Y-axis direction support portions of the third holding frame are provided at a pair of positions in the Y-axis direction,
The rotary plastic working apparatus according to claim 6 or 7, wherein a machining action position of the workpiece with respect to the workpiece in the Y-axis direction is located between the Y-axis direction support portions of the pair of third holding frames. .   The rotation according to any one of claims 1 to 8, wherein the direction of the main axis and the Z-axis direction are vertical directions, and the X-axis direction is a direction that is defined in a horizontal plane and approaches or separates from the main axis. Mold plastic processing equipment.   The rotary plastic working apparatus according to any one of claims 1 to 9, wherein the workpiece is a roller that rotates about a rotation axis.   As the roller, a heavy processing roller having a large curvature radius at the machining end and a light machining roller having a smaller curvature radius at the machining end than the heavy processing roller in a cross section along the rotation axis of the roller are selectively processed. The rotary plastic working apparatus according to claim 10, which is prepared for use.

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