JP2019181540A - Workpiece pressurizing device - Google Patents

Abstract

To provide a workpiece pressurizing device that can inhibit axial deformation of a workpiece.SOLUTION: A workpiece pressurizing device 10 comprises: multiple pressurizing members 31 each of which pressurizes one axial edge surface of an annularly shaped workpiece W; multiple receiving members 32 each of which receives the other axial edge surface of the workpiece W; a pressurizing actuator 33 for applying axial force on the pressurizing members 31; and a rotation mechanism 11 for rotating the workpiece W about a central axis O of the workpiece W relative to the pressurizing members 31 and the receiving members 32. The multiple pressurizing members 31 are disposed at intervals in a circumferential direction of the workpiece W. The pressurizing actuator 33, which is disposed in an area radially inward from an outer peripheral surface of the workpiece W, applies the axial force on the multiple pressurizing members 31.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a workpiece pressing device that pressurizes a workpiece in order to suppress deformation of the workpiece, for example, during heat treatment.

  Patent Document 1 below discloses a distortion correcting device for correcting distortion generated when heat-treating an annular metal member (hereinafter also referred to as “work”). This distortion correcting device includes two fixed position rollers that come into contact with the outer peripheral surface of the workpiece and one pressure roller. The fixed position roller has a function as a rotating member that rotates the work around its axis and a function as a positioning member that determines the position of the work in the radial direction. The pressure roller has a function of correcting the distortion (deformation) in the radial direction of the workpiece by pressing the outer peripheral surface of the workpiece inward in the radial direction.

JP 2011-20155 A

  With the technique described in Patent Document 1, even if the deformation in the radial direction of the workpiece can be suppressed, the deformation in the axial direction cannot be suppressed. Further, for example, when the workpiece is warped in the axial direction, the dimension in the radial direction is also affected, and the dimensional accuracy of the outer diameter and inner diameter of the workpiece is reduced.

  An object of this invention is to provide the workpiece | work pressurization apparatus which can suppress the deformation | transformation of the axial direction of a cyclic | annular workpiece | work.

  (1) A work pressure device according to the present invention includes a pressure member that pressurizes one end surface in the axial direction of a work formed in an annular shape, a receiving member that receives the other end surface in the axial direction of the work, A pressure actuator that applies a force in a direction, a rotation mechanism that relatively rotates the pressure member, the receiving member, and the work around a central axis of the work; the pressure member, the receiving member, and the work And a rotation mechanism that relatively rotates around the central axis of the workpiece, and a plurality of the pressure members are provided at intervals in the circumferential direction of the workpiece, and the pressure actuator is arranged on the outer periphery of the workpiece. It arrange | positions in the area | region inside radial direction rather than a surface, and provides axial force to these pressure members.

In the workpiece pressurizing device having the above configuration, the pressing member presses one end surface in the axial direction of the workpiece by the force applied from the pressing actuator, and the receiving member receives the other end surface in the axial direction of the workpiece. The workpiece can be sandwiched between the members and the axial deformation of the workpiece can be suppressed.
Since the pressurizing actuator is disposed in a region inside the outer peripheral surface of the work, it is possible to suppress an increase in the size of the work pressurizing device as compared with the case where the pressurizing actuator is disposed outside the region. A force can be easily applied to a plurality of pressure members by one pressure actuator. The region radially inward from the outer peripheral surface of the workpiece includes a projection range along the workpiece central axis direction of the region.

(2) Preferably, the receiving member is provided in the same number as the pressing member with an interval in the circumferential direction of the workpiece, and is arranged at the same position as the pressing member in the circumferential direction of the workpiece.
With such a configuration, the force applied to the workpiece from the pressure member can be received by the member, and deformation of the workpiece due to the force applied from the pressure member can be prevented.

(3) Preferably, the pressurizing member includes a roller body that rotates in contact with one axial end surface of the workpiece, and a support member that rotatably supports the roller body.
With such a configuration, it is possible to reduce the frictional resistance associated with the contact between the workpiece and the pressing member.

(4) Preferably, the support member of the pressure member supports both ends of the pressure member in the rotation axis direction in the roller body.
With such a configuration, it is possible to suppress the deflection of the roller body when a force is applied from the pressure actuator, and to apply a larger force to the workpiece.

(5) Preferably, the receiving member includes a roller body that rotates in contact with the other axial end surface of the workpiece, and a support member that rotatably supports the roller body.
With such a configuration, it is possible to reduce the frictional resistance associated with the contact between the workpiece and the receiving member.

(6) Preferably, the support member of the receiving member supports both ends of the receiving member in the rotation axis direction in the roller body.
With such a configuration, it is possible to suppress the deflection of the roller body when a force is applied from the pressure actuator, and to apply a larger force to the workpiece.

(7) Preferably, the outer peripheral surface of the roller body of the pressure member and / or the receiving member is a cylindrical surface.
With such a configuration, the roller body can be easily supported at both ends.

(8) Preferably, the workpiece pressing device includes a radial pressing mechanism that applies a radial force to the outer peripheral surface of the workpiece while rotating the workpiece around the central axis of the workpiece.
With such a configuration, deformation of the workpiece in the radial direction can also be suppressed.

  According to the present invention, axial deformation of an annular workpiece can be suppressed.

It is a perspective view of the workpiece | work pressurization apparatus which concerns on 1st Embodiment. It is a side view of a part of a work pressurizing device. It is a top view of a workpiece pressurizing apparatus. It is a perspective view of the workpiece | work pressurization apparatus which concerns on 2nd Embodiment. It is a side view of a part of a work pressurizing device. It is a graph which shows the test result about the deformation | transformation of the radial direction of a workpiece | work. It is a graph which shows the test result about the deformation | transformation of the axial direction of a workpiece | work.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a perspective view of a workpiece pressing device according to the first embodiment.
The workpiece pressurizing device 10 is a device that pressurizes the workpiece W in order to suppress deformation of the annular workpiece W. The work pressure device 10 of the present embodiment is mainly used for suppressing deformation of the work W during heat treatment. For example, when the workpiece pressurizing apparatus 10 quenches the workpiece W, the workpiece pressing device 10 is charged into the coolant together with the workpiece W, and imparts a force against the deformation of the workpiece W to the workpiece W, resulting in quenching stress or the like. The deformation of the workpiece W to be suppressed is suppressed.

  The work pressurizing device 10 of the present embodiment pressurizes a work W that is arranged with the central axis O directed in the vertical direction. Examples of the annular workpiece W include an outer ring and an inner ring of a rolling bearing. In this embodiment, an example in which the outer ring of the tapered roller bearing is a workpiece W will be described. In addition, hardening of the workpiece | work W is performed by immersing the workpiece | work W heated, for example to about 830 degreeC-900 degreeC in a cooling fluid. Moreover, the workpiece W after quenching is tempered by heating to 160 ° C. to 220 ° C.

The work pressure device 10 includes a radial pressure mechanism 11 and an axial pressure mechanism 12.
(Configuration of radial pressing mechanism 11)
The radial pressurizing mechanism 11 pressurizes the outer peripheral surface of the work W while rotating the work W around its central axis O. The radial pressure mechanism 11 includes two rotating rollers 21, one pressure roller 22, and one pressure actuator 23. In addition, the radial direction pressurization mechanism 11 is a rotation mechanism in view of only the function of rotating the workpiece W around its central axis.

The two rotating rollers 21 and the one pressure roller 22 are arranged at intervals in the circumferential direction of the workpiece W.
Each rotating roller 21 has a roller body 21a and a support member 21b. Roller body 21a is formed in a cylindrical shape, it is arranged the central axis O _211, O ₂₁₂ in a state in which vertically oriented in the vertical direction. The roller body 21a rotates around the central axes _O211 and _O212 . Further, the roller body 21 a is disposed such that the outer peripheral surface thereof is in contact with the outer peripheral surface of the workpiece W. The outer peripheral surface of the roller body 21a is a cylindrical surface. The roller body 21a is rotationally driven by a motor (not shown).

Supporting member 21b rotatably supports both end portions of the central axis _{O 211, O 212} of the roller body 21a. The support member 21b includes a pair of support portions 21b1 that support both ends of the central axes O ₂₁₁ and O ₂₁₂ of the roller body 21a via a rolling bearing or a slide bearing, and a connection portion 21b2 that connects the pair of support portions 21b1. It is formed in a substantially U-shape.

The pressure roller 22 has a roller body 22a and a support member 22b. Roller body 22a is formed in a cylindrical shape, it is arranged the central axis O ₂₂ in a state where the vertically oriented in the vertical direction. Roller body 22a is rotated around the central axis _{O 22.} Further, the roller body 22 a is disposed so that the outer peripheral surface thereof is in contact with the outer peripheral surface of the workpiece W. The outer peripheral surface of the roller body 22a is a cylindrical surface.

Supporting member 22b rotatably supports both end portions of the central axis _{O 22} of the roller body 22a. The support member 22b includes a pair of support portions 22b1 which supports through the two ends of the central axis _{O 22} of the roller body 22a rolling or sliding bearings or the like, and a connecting portion 22b2 which connects the pair of support portions 22b1 It is formed in a substantially U shape.

  The pressure actuator 23 applies a force directed inward in the radial direction of the workpiece W to the pressure roller 22. The pressure actuator 23 is selected from a hydraulic cylinder, an air cylinder, an electric cylinder, and the like. The pressurizing actuator 23 has a cylinder rod 23a that is disposed substantially horizontally and expands and contracts in the horizontal direction. The tip of the cylinder rod 23 a of the pressure actuator 23 is connected to the support member 22 b of the pressure roller 22. The work W is restrained at three points by the two rotating rollers 21 and the pressure roller 22 by the force applied from the pressure actuator 23, and deformation in the radial direction is suppressed.

(Configuration of axial pressurizing mechanism 12)
The axial pressurizing mechanism 12 pressurizes the end surface of the workpiece W in the axial direction. The axial pressure mechanism 12 includes a plurality of pressure members 31, a plurality of receiving members 32, and a pressure actuator 33.

  The pressure member 31 of this embodiment is configured by a pressure roller. The pressure roller 31 is disposed on one side in the axial direction of the workpiece W, specifically, on the upper side, and is provided at three locations with a gap in the circumferential direction of the workpiece W. The pressure rollers 31 are provided at three locations at equal intervals in the circumferential direction of the workpiece W. Each pressure roller 31 has a roller body 31a and a support member 31b.

The roller body 31a is formed in a cylindrical shape, and is arranged with its central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ oriented in the horizontal direction. Specifically, the central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ of the roller main body 31 a are arranged along the radial direction of the workpiece W. The roller body 31b rotates around the central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ . The roller body 31a is disposed such that its outer peripheral surface is in contact with one end surface (upper end surface) of the workpiece W in the axial direction. The outer peripheral surface of the roller body 21a is a cylindrical surface. Further, the roller body 31 a is disposed so that the center part in the direction of the central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ is located within the radial range of the upper end surface of the workpiece W. More preferably, the roller main body 31a is disposed so that the central part in the direction of the central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ is located at the center between the radial inner peripheral surface and the outer peripheral surface of the upper end surface of the workpiece W. The

The support member 31b rotatably supports both end portions of the central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ of the roller body 31a. The support member 31b includes a pair of support portions 31b1 that support both ends of the central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ of the roller body 31a via a rolling bearing or a slide bearing, and a connection that connects the pair of support portions 31b1. Part 31b2, and is formed in a substantially U-shape.

The axial pressure mechanism 12 further has a connecting member 34. The connecting member 34 connects the three pressure rollers 31 to each other. All the pressure rollers 31 are connected by the connecting member 34 so that the central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ of the respective roller main bodies 31 a exist on the same plane. All the pressure rollers 31 are arranged so that the intersections of the central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ of the respective roller main bodies 31 a are located within the radial range of the upper end surface of the workpiece W. More preferably, the intersection points where the central axes O ₃₁₁ , O ₃₁₂ , and O ₃₁₃ of the respective roller main bodies 31 a intersect with the central axis O of the workpiece W.

  The connecting member 34 has a base portion 34a and a plurality of arm portions 34b. The base portion 34a is located on a central axis O of a region radially inward of the outer peripheral surface of the workpiece W (a region indicated by a two-dot chain line hatching in FIG. 3; hereinafter, also referred to as “a radial direction region of the workpiece W”) R. It is arranged within the projection range along, specifically, on the central axis O of the workpiece W. The arm portion 34 b extends radially outward from the base portion 34 a toward each pressure roller 31, and the tip is connected to the support member 31 b of each pressure roller 31.

  The receiving member 32 of this embodiment is configured by a receiving roller. The receiving rollers 32 are arranged on the other side in the axial direction of the workpiece W, specifically, on the lower side, and are provided at three locations with a gap in the circumferential direction of the workpiece W. The three receiving rollers 32 are arranged at the same position as the pressure roller 31 in the circumferential direction.

Each receiving roller 32 has a roller body 32a and a support member 32b. The roller main body 32a is formed in a cylindrical shape, and is arranged with its central axes O ₃₂₁ , O ₃₂₂ , and O ₃₂₃ oriented in the horizontal direction. Specifically, the central axes O ₃₂₁ , O ₃₂₂ , and O ₃₂₃ of the roller main body 32 a are arranged along the radial direction of the workpiece W. The roller body 32a rotates about the central axes O ₃₂₁ , O ₃₂₂ , and O ₃₂₃ . The roller body 32a is disposed so that the outer peripheral surface thereof is in contact with the other axial end surface (lower end surface) of the workpiece W. Further, the roller body 32 a is arranged so that the center in the direction of the central axes O ₃₂₁ , O ₃₂₂ , and O ₃₂₃ is located within the radial range of the lower end surface of the workpiece W. More preferably, the roller main body 32a is disposed so that the center in the direction of the central axes O ₃₂₁ , O ₃₂₂ , and O ₃₂₃ is located at the center between the radially inner peripheral surface and the outer peripheral surface of the lower end surface of the work W. .

Supporting member 32b rotatably supports both end portions of the central axis _{O 321, O 322, O 323} of the roller body 32a. The support member 32b includes a pair of support portions 32b1 that support both ends of the central axes O ₃₂₁ , O ₃₂₂ , and O ₃₂₃ of the roller body 32a via a rolling bearing or a slide bearing, and a connecting portion that connects the pair of support portions 32b1. 32b2 and is formed in a substantially U-shape. Each support member 32 b is fixed on the bottom member 35 of the axial pressure mechanism 12. All the receiving rollers 32 are fixed on the bottom member 35 so that the central axes O ₃₂₁ , O ₃₂₂ , and O ₃₂₃ of the respective roller main bodies 32 a exist on the same plane. All the receiving rollers 32 are arranged such that the intersections of the central axes O ₃₂₁ , O ₃₂₂ , and O ₃₂₃ of the respective roller main bodies 32 a are located within the radial range of the lower end surface of the workpiece W. More preferably, the intersections at which the central axes O ₃₂₁ , O ₃₂₂ , and O ₃₂₃ of the respective roller main bodies 32 a intersect with the central axis O of the workpiece W are arranged.

  The pressure actuator 33 is disposed within the projection range of the radial region R of the workpiece W, specifically, on the central axis O of the workpiece W. The pressure actuator 33 is selected from a hydraulic cylinder, an air cylinder, an electric cylinder, and the like. The pressure actuator 33 includes a cylinder rod 33 a that is disposed along the center axis O of the workpiece W and extends and contracts in the vertical direction along the center axis O of the workpiece W.

  The lower end of the cylinder rod 33 a of the pressure actuator 33 is connected to the base portion 34 a of the connecting member 34. Then, by extending the cylinder rod 33a of the pressure actuator 33 downward, the pressure roller 31 is pressed against the upper end surface of the work W via the connecting member 34, and is sandwiched between the receiving roller 32 and the work W. An axial force along the central axis O of W is applied.

  The work W is strongly sandwiched between the pressure roller 31 and the receiving roller 32 by the force applied from the pressure actuator 33, and axial deformation, for example, warpage deformation is suppressed. In addition, since the workpiece W is rotated around the central axis O of the workpiece W by the rotating roller 21 of the radial direction pressurizing mechanism 11, deformation in the axial direction is suppressed over the entire circumference. Further, when the roller bodies 31a and 32a of the pressure roller 31 and the receiving roller 32 rotate, the frictional resistance between the roller bodies 31a and 32a and the workpiece W is reduced, and the workpiece W is moved to the center axis O of the workpiece W. It can be rotated smoothly around.

  Since the pressurization actuator 33 is disposed within the projection range of the radial region R of the workpiece W, the work pressurization apparatus can be increased in size compared to the case where the pressurization actuator 33 is disposed outside the projection range. Can be suppressed. Further, since the pressure actuator 33 is disposed within the projection range of the radial region R of the workpiece W, it becomes easy to apply force to the plurality of pressure rollers 31. In particular, when the pressure actuator 33 is disposed on the central axis O of the workpiece W, a force can be applied to the plurality of pressure rollers 31 substantially evenly.

  Further, since the connecting member 34 is also disposed within the projection range of the radial region R of the workpiece W, the work pressure device 10 is increased in size as compared with the case where the connecting member 34 is disposed outside the projection range. Can be suppressed.

Since the roller body 31a of the pressure roller 31 is supported at both ends by the support member 31b, the roller body 31a is cantilevered at one end in the direction of the central axes O ₃₂₁ , O ₃₂₂ , and O _323. Thus, it becomes difficult for the roller body 31a to be bent by the force from the pressure actuator 43, and a larger force can be applied.

Since the roller main body 32a and the support member 32b of the receiving roller 32 have substantially the same configuration as the roller main body 31a and the support member 31b of the pressure roller 31, the same operational effects as these are obtained.
Since the pressure roller 31 and the receiving roller 32 are arranged at the same position in the circumferential direction of the work W, the force applied to the work W from the pressure roller 31 is reliably received by the roller 32, and the work W Can be further suppressed.

[Second Embodiment]
FIG. 4 is a perspective view of a workpiece pressing device according to the second embodiment. FIG. 5 is a side view of a part of the work pressure device.
The workpiece pressing device 10 according to the present embodiment is different from the first embodiment in the configuration of the pressing member 41 and the receiving member 42 in the axial pressing mechanism 12.

The pressure member 41 in the axial direction pressure mechanism 12 of the present embodiment includes a pressure roller having a roller body 41a and a support member 41b, and the support member 41b is disposed along the radial direction of the workpiece W. . Support member 41b has its radially outer end, supports the central axis O ₄₁ direction of one end of the roller body 41a in a cantilever manner. The pressure roller 41 is provided at two locations opposite to each other by 180 ° with respect to the circumferential direction of the workpiece W.

The support members 41 b are connected to each other by a connecting member 44. The connecting member 44 is disposed on the center axis O of the workpiece W, and the lower end of the cylinder rod 43a of the pressure actuator 43 is connected to the connecting member 44. Roller body 41a rotates around the central axis _{O 41} of the roller body 41a.

The receiving member 42 is composed of a plurality of bar members 42a arranged in parallel to each other. The bar 42 a is fixed on the bottom member 35. The bar 42a is made of, for example, a round bar, and is in line contact with the workpiece W at the apex of each round bar.
Since other configurations are the same as those of the first embodiment, detailed description thereof is omitted.

Also in this embodiment, by extending the cylinder rod 43a of the pressure actuator 43, the workpiece W is strongly sandwiched between the pressure roller 41 and the receiving member 42, and the deformation of the workpiece W in the axial direction is suppressed. .
However, in this embodiment, since the roller body 41a of the pressure roller 41 is cantilevered by the support member 41b, the roller body 41a can be easily bent due to the application of force from the pressure actuator 43. There is a high possibility that the force will be limited. Moreover, since the receiving member 42 is comprised by the bar 42a fixed to the bottom member 35, the workpiece | work W may slide on the receiving member 42 and the frictional resistance between both may increase. Therefore, the first embodiment is more advantageous in these points.

[Verification of effect of embodiment]
The inventor of the present application verified the effect of the embodiment by performing the following test.
Specifically, the workpiece pressurization apparatus (hereinafter referred to as an example) shown in the second embodiment and the workpiece that does not include the axial pressurization mechanism (including only the radial pressurization mechanism) for quenching the workpiece. Using a pressurizer (hereinafter referred to as “comparative example”), the amount of deformation in the radial direction and the axial direction of the workpiece after heat treatment was measured. In the quenching, the work W was heated at about 870 ° C., and then the work W was immersed in the cooling oil. Moreover, tempering was performed by heating the workpiece | work W to about 200 degreeC after hardening.

FIG. 6 is a graph showing test results for the radial deformation of the workpiece.
The amount of deformation in the radial direction was the difference between the maximum diameter and the minimum diameter of the workpiece.
When comparing the comparative example with the example in FIG. 6, the deformation amount is about 0.13 mm in the comparative example, but is about 0.11 mm in the example, and it can be seen that the deformation is suppressed. In addition, in the example, it can be seen that the variation in the amount of deformation is also small.

FIG. 7 is a graph showing test results for the axial deformation of the workpiece.
The amount of deformation in the axial direction is the amount of warpage deformation at one end surface in the axial direction of the workpiece.
When comparing the comparative example and the example in FIG. 7, the deformation amount is about 0.25 mm in the comparative example, whereas it is about 0.12 mm in the embodiment, and it can be seen that the deformation amount is suppressed. In addition, in the example, it can be seen that the variation in the amount of deformation is also small.

  As mentioned above, the deformation | transformation of the axial direction of the workpiece | work was able to be suppressed effectively by using the workpiece | work pressurization apparatus which concerns on an Example. Further, not only the deformation of the workpiece in the axial direction but also the deformation in the radial direction and variations in the deformation amount could be suppressed. This is because when the workpiece is deformed in the axial direction, not only the radial dimension changes, but also suppressing the deformation of the workpiece in the axial direction leads to suppressing the deformation of the workpiece in the radial direction.

In addition, this invention is not limited to the above illustration, is shown by the claim, and intends that all the changes within the meaning and range equivalent to a claim are included.
For example, in the first embodiment, the number of pressure rollers of the axial direction pressure mechanism is not limited to three, and may be two or more. The same applies to the number of receiving rollers. Further, the number of pressure rollers and receiving rollers may be different. The positions of the pressure roller and the receiving roller may be shifted in the circumferential direction. The pressure roller and the receiving roller may be arranged at equal intervals in the circumferential direction of the workpiece W or may be arranged at unequal intervals.

  In each of the above embodiments, the pressure actuator of the axial direction pressure mechanism is disposed on the center axis of the workpiece. However, if it is within the projection range of the workpiece in the radial direction region, it is disposed at a position shifted from the center axis of the workpiece. May be.

  The roller bodies of the pressure roller and the receiving roller in the axial direction pressure function are not limited to a cylindrical shape, and may be conical. In this case, by disposing the small end side of the roller body toward the inside in the radial direction of the workpiece W, it is possible to reduce slippage of the roller body due to a difference in circumferential speed between the inner circumferential side and the outer circumferential side of the workpiece W.

  In the axial pressure mechanism of the first embodiment, the roller bodies of the pressure roller and the receiving roller are both supported by the support member, but the pressure roller of the axial pressure mechanism of the second embodiment. As described above, the roller body may be cantilevered. Moreover, in the axial direction pressurization mechanism of 1st Embodiment, it replaces with a receiving roller and the receiving member which consists of a some bar material of 2nd Embodiment may be used.

  In addition, the pressure member may be configured by a fixed (non-rotating) bar, block, or the like, instead of the form of the pressure roller in the first or second embodiment.

  Although the workpiece pressurization apparatus of the said embodiment was used in the case of hardening of a workpiece | work, it can also be used in the case of heat processing other than hardening. Moreover, it can also be used to pressurize a workpiece for uses other than heat treatment.

  In the above embodiment, the outer ring of the tapered roller bearing is exemplified as the work, but it may be an inner ring, or may be an outer ring or an inner ring of other rolling bearings. Moreover, if it is cyclic | annular, workpieces other than the outer ring | wheel and inner ring | wheel of a rolling bearing may be sufficient.

10: Work pressure device, 11: Radial pressure mechanism (rotation mechanism), 31: Pressure roller (pressure member), 31a: Roller body, 31b: Support member, 32: Receiving roller (receiving member), 32a : Roller body, 32b: support member, 33: pressure actuator, 41: pressure roller (pressure member), 41a: roller body, 41b: support member, 42: receiving member, 43: pressure actuator, O: center Axis, W: Workpiece

Claims (8)

A pressurizing member that pressurizes one axial end surface of the annularly formed workpiece;
A receiving member for receiving the other axial end surface of the workpiece;
A pressure actuator for applying an axial force to the pressure member;
A rotation mechanism that relatively rotates the pressurizing member, the receiving member, and the work around a central axis of the work,
A plurality of the pressure members are provided at intervals in the circumferential direction of the workpiece,
The workpiece pressurizing device, wherein the pressurizing actuator is disposed in a region radially inward of an outer peripheral surface of the workpiece and applies an axial force to the plurality of pressing members.   The said receiving member is provided at the same position as the said pressurization member with respect to the circumferential direction of the said workpiece | work, and the same number as the said pressurization member is provided at intervals in the circumferential direction of the said workpiece | work. Work pressure device.   The workpiece pressing device according to claim 1, wherein the pressing member includes a roller body that rotates in contact with an axial end surface of the workpiece, and a support member that rotatably supports the roller body. .   The work pressing device according to claim 3, wherein the support member of the pressure member supports both ends of the roller body of the pressure member in a rotation axis direction.   The said receiving member contains the roller main body which contacts and rotates the axial direction other end surface of the said workpiece | work, and the support member which supports the said roller main body rotatably. Work pressure device.   The work pressing device according to claim 5, wherein the support member of the receiving member supports both ends of the receiving member in the direction of the rotation axis of the roller body.   The work pressure device according to any one of claims 3 to 6, wherein an outer peripheral surface of the roller body of the pressure member and / or the receiving member is a cylindrical surface.   The workpiece pressurizing device includes a radial pressurizing mechanism that applies a radial force to the outer peripheral surface of the workpiece while rotating the workpiece around the central axis of the workpiece. The work pressurizing apparatus according to item 1.

Images