JP6283927B2 - Work shape adjusting device and shape adjusting method - Google Patents

Description

  The present invention relates to a workpiece shape adjusting device and a shape adjusting method for adjusting a shape while moving a workpiece.

Conventionally, the shape of a workpiece has been adjusted while rotating an annular workpiece or moving a long workpiece in the longitudinal direction. For example, an apparatus that corrects deformation while moving and cooling a heated workpiece is known.
In Patent Document 1 below, an apparatus for correcting the shape of a ring-shaped workpiece is disclosed. The apparatus includes an arrangement table on which a ring-shaped workpiece is placed, a pair of rolls that can be brought into radial contact with an outer peripheral surface of the ring-shaped workpiece arranged on the arrangement table, and a ring-shaped roll on the pair of rolls. And a single pressure roll provided to face each other across the workpiece.

  In this apparatus, a heated ring-shaped work is placed on a mounting table, the pressure roll is pressed against the outer peripheral surface of the ring-shaped work in a radial direction by a pressure roll advance / retreat mechanism, and the pressure roll is driven by a pressure roll rotation drive mechanism. Cool the ring-shaped workpiece while rotating. The roundness is improved by correcting the deformation of the ring-shaped workpiece during this cooling.

  In Patent Document 2 below, a rotating means for rotating an annular workpiece, an inner roller in contact with the inner peripheral surface of the workpiece, an outer roller in contact with the outer peripheral surface of the workpiece, and the outer roller attached to the outer peripheral surface side of the workpiece. A heat treatment apparatus including a biasing means for biasing is disclosed.

  In the apparatus described in Patent Document 2, not only the outer peripheral surface of the annular workpiece is pressurized, but the outer peripheral surface and the inner peripheral surface are pressurized, so that the apparatus configuration can be made compact.

JP 2009-84610 A JP 2012-46805 A

  However, in the conventional apparatus, it has been found that when the circular workpiece is pressed in the radial direction to correct the deformation, the roundness can be improved, but the axial deformation is generated or increased along with the correction. In this case, for example, it is conceivable to correct the axial deformation by pressing both end faces of the workpiece, but the apparatus becomes complicated and large.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a workpiece shape adjusting device and a shape adjusting method capable of efficiently adjusting the shape of a workpiece with a simple structure.

The shape adjusting device for a workpiece of the present invention that achieves the above object is a shape adjusting device that adjusts the shape while rotating the annular workpiece, and adds the rotating workpiece in the radial direction. A radial pressing means for pressing, and an axial pressing means for pressing the rotating workpiece in the axial direction, wherein the axial pressing means is a first roller that comes into contact with one end of the workpiece in the axial direction; A second roller disposed at a position displaced in the circumferential direction from the roller and abutting against the other axial end of the workpiece, and an axial pressure tool for relatively pressing the first roller and the second roller in the axial direction; The radial direction pressurizing means and the axial direction pressurizing means are provided so as to overlap each other.

The radial pressurizing unit and the axial pressurizing unit of the present invention may pressurize a heated workpiece while rotating and cooling. The axial direction pressing means preferably includes a plurality of first rollers disposed apart from each other in the circumferential direction of the workpiece, and a second roller disposed between the plurality of first rollers. . Further, it is preferable that a plurality of shape adjusting devices are provided in the circumferential direction of the workpiece.

In the workpiece shape adjusting method of the present invention that achieves the above-described object, the rotating annular workpiece is pressurized in the radial direction at a position overlapping with each other, and is pressed in the axial direction, so that the radial and axial shapes of the workpiece are changed. A step of adjusting, in which the first roller is brought into contact with one end of the workpiece in the axial direction and the second roller is brought into contact with the other end in the axial direction of the workpiece at a position shifted in the circumferential direction from the first roller. In this method, the first roller and the second roller are relatively pressed in the axial direction. It is preferable to adjust the shape while cooling the heated workpiece.

  According to the present invention, when adjusting the shape of the workpiece, the first roller and the second roller are arranged at positions shifted from each other and relatively pressurized, so the pressure is applied while moving the workpiece. Then, it is possible to continuously apply a bending load to each part of the workpiece in the longitudinal direction. Therefore, it is easy to apply a large bending load to each part, and pressurization can be performed with a smaller load than when the entire workpiece is pressurized. As a result, the shape can be adjusted efficiently with a simple structure.

  According to the present invention, when a rotating annular workpiece is pressurized in the radial direction and pressurized in the axial direction, the heated workpiece can be adjusted to match the radial shape and the axial shape. Therefore, it is possible to prevent the axial deformation from occurring or increase by adjusting the radial shape, and to prevent the radial deformation from occurring or increasing by adjusting the axial shape. The shape can be adjusted efficiently.

It is a schematic longitudinal cross-sectional view which shows the heat processing apparatus incorporating the shape adjustment apparatus of the workpiece | work which concerns on 1st Embodiment of this invention. It is a schematic plan view which shows the heat processing apparatus with which the shape adjustment apparatus of the workpiece | work which concerns on 1st Embodiment of this invention was integrated. It is a schematic plan view which shows arrangement | positioning of the axial direction pressurization means and radial direction pressurization means which concern on 1st Embodiment of this invention, (a) shows the state before pressurization, (b) is during pressurization. Indicates the state. The It is a schematic side view which shows arrangement | positioning of the axial direction pressurization means and radial direction pressurization means which concern on 1st Embodiment of this invention. It is a schematic longitudinal cross-sectional view which shows the heat processing apparatus incorporating the shape adjustment apparatus of the workpiece | work which concerns on 2nd Embodiment of this invention. It is a schematic plan view which shows the heat processing apparatus with which the shape adjustment apparatus which concerns on 2nd Embodiment of this invention was integrated. It is a schematic plan view which shows arrangement | positioning of the axial direction pressurization means and radial direction pressurization means which concern on 2nd Embodiment of this invention, (a) shows the state before pressurization, (b) is during pressurization. Indicates the state. The It is a schematic side view which shows arrangement | positioning of the axial direction pressurization means and radial direction pressurization means which concern on 2nd Embodiment of this invention. It is a schematic plan view which shows the shape adjustment apparatus which concerns on 3rd Embodiment of this invention. It is a schematic sectional drawing which shows the shape adjustment apparatus which concerns on 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, an example is used in which the shape of a workpiece used for a raceway member such as a bearing member is adjusted.

[First Embodiment]
In this embodiment, an annular workpiece W having an inner peripheral surface and an outer peripheral surface having a circular cross section and having a flat lower end surface and upper end surface is heat-treated.
[Heat treatment equipment]
As shown in FIGS. 1 and 2, the heat treatment apparatus 1 includes a heating unit 10 that heats the workpiece W and a cooling unit 20 that cools the heated workpiece W. The heating unit 10 and the cooling unit 20 are arranged above and below, and the virtual heating unit axis L1 and the cooling unit axis L2 are the same line in the vertical direction.

The heating unit 10 includes a heating coil 11 having a shape corresponding to the workpiece W, and a support unit 12 that supports the workpiece W at a predetermined position. In this embodiment, the heating coil 11 is mounted on the upper part of the cooling unit 20 with high accuracy around the heating unit axis L1, and the support unit 12 is provided on the lifting base 22 of the cooling unit 20 and moves up and down along the heating unit axis L1. Is possible.
When the support portion 12 that supports the workpiece W is arranged at a predetermined raised position, the workpiece W is accurately arranged at a predetermined height with respect to the heating coil 11, and the workpiece W and the heating coil 11 are arranged coaxially. The When the support unit 12 is sufficiently lowered, the work W supported by the support unit 12 moves to the work holding unit 23 of the cooling unit 20.

  The cooling unit 20 includes a cooling tank 21 in which a coolant is stored, a lifting base 22 that is disposed in the cooling tank 21 and can be moved up and down, a work holding unit 23 provided in the lifting base 22, and shape adjustment of the present embodiment. Device 30.

  The lifting base 22 can be lifted and lowered along the cooling unit axis L <b> 2 by the lifting device 24. At the position where the elevating base 22 is raised most, the workpiece W and the shape adjusting device 30 held by the workpiece holding portion 23 are arranged above the liquid level of the cooling liquid, and at the lowest position, the workpiece W and the shape adjusting device 30 are placed. Is immersed in the coolant.

The work holding unit 23 holds the work W so as to be rotatable along the circumferential direction of the work W, and a plurality of mounting rollers 25 that are rotatable around a substantially horizontal axis of the work W are spaced apart in the circumferential direction. It is arranged in the space. The plurality of placement rollers 25 are arranged on the work holding unit 23 so that the tops are at the same height. The placement roller 25 may be positionally adjustable in the radial direction according to the workpiece W.
In this embodiment, a first roller 41 (described later) of the shape adjusting device 30 is used as it is as the mounting roller 25. As indicated by an imaginary line in FIG. 1, a placement roller 25 that is rotatable in the circumferential direction of the workpiece W may be arranged separately from the first roller 41.

[Work shape adjustment device]
The workpiece shape adjusting device 30 adjusts the shape while rotating and cooling the heated workpiece W, and is provided at a plurality of positions in the circumferential direction of the workpiece W.
Here, adjusting the shape of the workpiece W means correcting the shape of the workpiece W by reducing or wiping the shape of the workpiece W by pressurizing the workpiece W to adjust the outer shape so that the workpiece W has a desired shape. And suppressing distortion of a shape newly generated during heat treatment or correction. In this embodiment, by reducing the difference from the design shape existing in the heated workpiece W and the deformation that occurs during cooling and correction, the radial shape distortion and the axial shape distortion are reduced or eliminated. Thus, the roundness of the work W is improved and the flatness of both end faces of the work W is improved.

  As shown in FIG. 1, each shape adjusting device 30 is provided on the base 31, which is supported by the elevating base 22 so that the position thereof can be adjusted in the radial direction, and as shown in FIGS. 3A and 3B. The radial direction pressurizing means 32 and the axial direction pressurizing means 33 are provided. The radial pressurizing means 32 pressurizes the rotating workpiece W in the radial direction, and the axial pressurizing means 33 pressurizes the rotating workpiece W in the axial direction.

  The radial pressing means 32 is a radial direction that pressurizes the inner roller 34 and the outer roller 35 relatively in the radial direction, an inner roller 34 that contacts the inner side of the workpiece W, an outer roller 35 that contacts the outer side of the workpiece W, and the inner roller 34. And a pressurizing tool 36. To relatively pressurize the inner roller 34 and the outer roller 35 is to press one or both of the inner roller 34 and the outer roller 35 in a direction in which the distance perpendicular to the cooling unit axis L2 is close. is there.

  The inner roller 34 is mounted on the base 31 so as to be rotatable about a substantially vertical axis. The side peripheral surface corresponds to the shape of the inner peripheral surface of the workpiece W, and the upper end is tapered. If each base 31 is arranged at a predetermined position according to the workpiece W, the distance between the cooling unit axis L2 and each inner roller 34 can be arranged equally. A part or all of the plurality of inner rollers 34 can be rotationally driven by a drive mechanism (not shown), and when rotated, the workpiece W placed on the workpiece holder 23 can be rotated along the circumferential direction. .

  The outer roller 35 is mounted on the base 31 so as to be rotatable about a substantially vertical axis, and the side peripheral surface corresponds to the shape of the outer peripheral surface of the workpiece W. The radial pressure tool 36 includes a swing piece 37 that supports the outer roller 35 and swings about the axis of the inner roller 34, and a pneumatic cylinder that swings and drives the swing piece 37 and biases it to one side. And the like. When the operation mechanism 38 is driven, the outer roller 35 can be moved close to and away from the cooling unit axis L2 and can be biased inward. When the outer roller 35 is brought close to the cooling unit axis L2, the outer roller 35 can be brought into contact with the outer peripheral surface of the work W held by the work holding unit 23 to pressurize the outer peripheral surface inward, and separated from the cooling unit axis L2. By doing so, the space between the inner roller 34 can be widened.

  The axial pressurizing means 33 is arranged at a position shifted in the circumferential direction from the first roller 41 and a plurality of first rollers 41 that are in contact with the lower end surface on one end side in the axial direction of the workpiece W. A second roller abutting on the upper end surface on the other end side; and an axial pressure tool 43 for relatively pressing the first roller 41 and the second roller in the axial direction of the workpiece W. . To relatively pressurize the first roller 41 and the second roller 42 is to pressurize one or both of the first roller 41 and the second roller 42 in a direction in which the distance along the cooling unit axis L2 is close. It is.

  The first roller 41 is mounted on the base 31 so as to be rotatable around a substantially horizontal axis. The side peripheral surface corresponds to the shape of the lower end surface of the workpiece W. In the present embodiment, the plurality of first rollers 41 are arranged apart from each other in the circumferential direction of the workpiece W.

  The second roller 42 is slidably mounted along a cooling unit axis L2 on a column 44 erected on the swinging piece 37 of the base 31, and is rotatable about a substantially horizontal axis. . The side peripheral surface corresponds to the shape of the upper end surface of the workpiece W, and the tip side that is the workpiece W side is tapered.

  The second roller 42 is disposed at a position shifted in the circumferential direction between the first roller 41 and the workpiece W in plan view, and is disposed so as to contact the workpiece W at different positions. In this embodiment, the second roller 42 is arranged at a position between the plurality of first rollers 41 arranged at a predetermined position by the swing piece 37.

  The axial pressurizing tool 43 includes an elastic body 45 such as a spring that biases a portion of the support 44 that supports the second roller 42 downward. The second roller 42 is urged downward by the elastic body 45, so that the second roller 42 is arranged at a lowermost position set in advance in a state where the second roller 42 is not in contact with the workpiece W, and is in contact with the workpiece W, The workpiece W can be pressed downward by the second roller 42 by being arranged higher. The position of the lowermost end of the second roller 42 can be adjusted according to the thickness of the workpiece W.

[Work heat treatment method]
In order to heat-treat the workpiece W using the heat treatment apparatus 1 equipped with the shape adjusting device 30 as described above, a process of heating the workpiece W is performed, and then the shape is adjusted while rotating and cooling the heated workpiece W. The process to do is performed. In the heating step, the workpiece W is placed substantially horizontally on the workpiece support unit 12 and is accurately placed at a predetermined position with respect to the heating coil 11 of the heating unit 10. In a state surrounded by the heating coil 11, heating is performed to a predetermined temperature by high frequency induction heating. In this embodiment, the inside of the workpiece W is heated.

  In the step of adjusting the shape after the heating is completed, the heated workpiece W is lowered by lowering the support portion 12, and the workpiece W is held by the workpiece holding portion 23 of the cooling portion 20. At this time, the work holding part 23 is disposed above the liquid surface of the coolant. In the elevating base 22, the base 31 of each shape adjusting device 30 is disposed at a predetermined position corresponding to the workpiece W.

  As shown in FIG. 3A, in each base 31, the inner roller 34 is disposed at a predetermined position. Due to the arrangement of the swing piece 37, the outer roller 35 is arranged at a position farthest from the cooling unit axis L2. Thereby, the space between the inner roller 34 and the outer roller 35 is in a state of being opened from the width of the workpiece W.

Since the top of each inner roller 34 is tapered, the inner peripheral surface of the workpiece W is guided in a tapered shape when the support portion 12 is lowered. Thereby, the axis | shaft of the workpiece | work W can be match | combined with the cooling part axis line L2.
When the support portion 12 is lowered below the upper end position of the placement roller 25 of the workpiece holding portion 23, the workpiece W is transferred onto the placement roller 25, and the workpiece W is accurately placed on the workpiece holding portion 23. In this state, the lower end surface of the work W comes into contact with the first roller 41 shared with the placement roller 25, and the inner roller 34 comes into contact with the inner peripheral surface of the work W.

  Next, as shown in FIG. 3B, in each shape adjusting device 30, the swing piece 37 is swung by the operating mechanism 38, and the outer roller 35 is moved to contact the outer peripheral surface of the workpiece W. Since the operation mechanism 38 of this embodiment is configured to pressurize to one side, the outer roller 35 is biased to the outer peripheral surface of the workpiece W.

  The second roller 42 is moved onto the upper surface of the workpiece W by the swing of the swing piece 37. Since the second roller 42 is previously adjusted to a predetermined height so as to correspond to the thickness of the workpiece W, when the second roller 42 is moved, the second roller 42 is guided onto the workpiece W due to the tapered shape. Then, the second roller 42 is displaced upward along the column 44 and is urged downward by the elastic body 45. As a result, the second roller 42 is brought into contact with the upper end surface of the work W and biased.

  In these states, the inner roller 34 of each base 31 is rotated by a driving mechanism (not shown), and the workpiece W is rotated along the circumferential direction. Then, in the radial pressurizing means 32 and the axial pressurizing means 33, the outer roller 35 and the second roller 42 are respectively urged to pressurize the rotating workpiece W in the radial direction and pressurize in the axial direction. The adjustment of the shape of the workpiece W is started.

  When the elevating base 22 is lowered while the shape adjusting devices 30 are operated, the work W held by the work holding unit 23 comes into contact with the cooling liquid and is cooled. Although the deformation of the workpiece W occurs with cooling, the deformation is reduced or eliminated by adjusting the shape of the workpiece W by each shape adjusting device 30.

  As shown in FIG. 4, the shape of the workpiece W in the circumferential direction is adjusted by bringing the inner roller 34 into contact with the inner circumferential surface of the workpiece W in each shape adjusting device 30 and shifting to the downstream side in the circumferential direction. The outer roller 35 is brought into contact with the outer peripheral surface of the work W at the raised position, and is pressed by the radial pressure tool 36. Thereby, a radial bending load can be applied to the radial shape adjustment region R1 between the contact portion of the inner roller 34 and the contact portion of the outer roller 35, and this load is applied to each part of the workpiece W. The roundness of the workpiece W can be improved by applying the load one or more times over the entire length.

  On the other hand, the adjustment of the shape of the workpiece W in the axial direction is performed by bringing the first roller 41 into contact with the lower end surface side of the workpiece W and at the position shifted from the first roller 41 toward the downstream side in the circumferential direction. The second roller 42 is brought into contact with and pressed by the axial pressure tool 43. As a result, an axial bending load can be applied to the axial shape adjustment region R2 between the contact portions of the plurality of first rollers 41 and the second roller 42, and this load is applied to the workpiece. The flatness of the upper end surface and the lower end surface of the workpiece W can be improved by repeating each part of the entire length of W one or more times.

In this embodiment, in each shape adjusting device 30, the radial shape adjusting region R1 of the radial pressurizing means 32 and the axial shape adjusting region R2 of the axial pressurizing means 33 are in the radial direction with respect to the workpiece W. The bending load and the bending load in the axial direction can be applied substantially simultaneously, thereby improving the roundness and flatness at the same time.

  After the workpiece W is sufficiently cooled, the lifting base 22 is raised to release the shape adjusting device 30, the workpiece W is taken out from the heat treatment device 1, and the heat treatment is finished.

[Operational effects in this embodiment]
As described above, the shape adjusting device 30 of the heat treatment apparatus 1 includes the radial pressurizing unit 32 that pressurizes the rotating workpiece W in the radial direction and the axial pressurizing unit 33 that pressurizes in the axial direction. Therefore, the heated workpiece W can be adjusted in accordance with the shape in the radial direction and the shape in the axial direction. Therefore, axial deformation due to radial shape adjustment can be prevented, radial deformation due to axial shape adjustment can be prevented, and the shape of the workpiece W can be adjusted efficiently.

  In addition, since the axial pressing means 33 is configured to relatively press the first roller 41 and the second roller 42 disposed at positions shifted from each other by the axial pressing tool 43, each part of the workpiece W is provided. The bending load can be continuously applied to the entire circumference. Therefore, a large bending load can be easily applied to each part, and the applied load can be reduced as compared with the case where the entire workpiece W is pressurized. As a result, the shape can be adjusted efficiently with a simple structure.

  Since the second roller 42 is disposed between the plurality of first rollers 41 in the axial pressing means 33, a bending load can be efficiently applied when the workpiece W is relatively pressed.

  Since the radial shape adjustment region R1 and the axial shape adjustment region R2 are disposed close to each other, the radial shape and the axial shape can be adjusted simultaneously, and distortion associated with the shape adjustment hardly occurs. .

  Since a plurality of axial pressing means 33 are arranged, the shape can be adjusted simultaneously at a plurality of locations, the adjustment time can be shortened, and the shape can be adjusted by stably supporting the workpiece W by each axial pressing means 33. it can.

[Second Embodiment]
5 and 6 show a heat treatment apparatus equipped with the workpiece shape adjusting apparatus according to the second embodiment. In the present embodiment, the configuration of the shape adjusting device 30 is substantially the same as in the first embodiment, except that the structure is different.

  As shown in FIGS. 7A and 7B, in the shape adjusting device 30 of the present embodiment, the base 31 includes an inner support body 51 and an outer support body 52, and the inner support body 51 includes an outer roller 35 and a second roller. The inner support body 51 is provided with an inner roller 34 and a plurality of first rollers 41. The base 31 is configured to be movable in the radial direction as a whole by a screw shaft 53 or the like provided in a direction orthogonal to the cooling unit axis L2. The outer support 52 is configured to be detachable from the inner support 51 by the operating mechanism 38, and the outer support 52 is biased toward the inner support 51 by the operating mechanism 38.

  The arrangement of the radial pressing means 32 having the outer roller 35 and the inner roller 34 and the axial pressing means 33 having the plurality of first rollers 41 and second rollers 42 is as shown in FIG. It has become. In this embodiment, the inner roller 34 and the second roller 42 are arranged at substantially the same position in the circumferential direction, and the first roller 41 and the outer roller 35 are arranged at substantially the same position in the circumferential direction.

  With this arrangement, the radial shape adjustment region R1 between the contact part of the inner roller 34 and the contact part of the outer roller 35, the contact part of the plurality of first rollers 41 and the contact part of the second roller 42 are arranged. Are overlapped with the axial direction shape adjustment region R2. Therefore, it is possible to simultaneously apply a radial bending load and an axial bending load to the workpiece W, thereby improving the roundness and flatness at the same time.

  Other configurations are the same as those of the first embodiment, and the description is omitted by giving the same reference numerals. Even if it is the heat processing apparatus 1 with which the shape adjustment apparatus 30 which concerns on such 2nd Embodiment was mounted | worn, it is possible to achieve the effect similar to 1st Embodiment.

Each of the above embodiments can be appropriately changed within the scope of the present invention. For example, the shape of the workpiece W can be selected as appropriate, and the inner and outer peripheral surfaces and both end surfaces may be tapered, bent, or curved. In that case, it is preferable to form each roller in a shape corresponding to the contact portion.
The radial direction pressing means 32 pressurizes the entire workpiece only with a plurality of rollers in contact with the outer peripheral surface of the workpiece W, or presses the entire workpiece with only a plurality of rollers in contact with the inner peripheral surface of the workpiece W. But you can. The number of rollers constituting the radial pressing means 32 and the axial pressing means 33 is not limited at all. For example, a plurality of first rollers 41 and a plurality of second rollers 42 may be provided, and in this case, the first rollers 41 and the second rollers 42 may be alternately arranged along the circumferential direction. As shown in phantom lines in FIGS. 4 and 8, a plurality of the first rollers 41 and the second rollers 42 may be arranged, and the radial shape adjustment region R1 and the axial shape adjustment region R2 are set at various positions. May be.
In order to rotate the workpiece W, the outer roller 35 may be rotationally driven, or one or both of the first roller 41 and the second roller 42 may be rotationally driven. In addition to the radial pressurizing means 32 and the axial pressurizing means 33, a mechanism for rotating the workpiece W can be provided. The cooling unit 20 may be provided with a cooling jacket to inject the cooling liquid, or may radiate heat in the air.

[Third Embodiment]
This embodiment is an example of adjusting the shape of a long workpiece that extends linearly.
As shown in FIGS. 9 and 10, the apparatus of the present embodiment is provided with a plurality of linear shape adjustment lines 61 and 62, and a shape adjustment device 60 is provided on each of the shape adjustment lines 61 and 62. .

  In this apparatus, the first shape adjustment line 61 and the second shape adjustment line 62 have a structure in which the shapes of the workpieces W having the same cross-sectional shape are adjusted from directions orthogonal to each other. That is, the first shape adjustment line 61 pressurizes between a pair of side surfaces facing each other to adjust the shape, and the second shape adjustment line 62 pressurizes between another pair of side surfaces orthogonal to the pair of side surfaces. Adjust the shape.

  The shape adjusting device 60 of each of the shape adjusting lines 61 and 62 is rotated by being pressed against the workpiece W in the vertical direction at a position shifted from the mounting roller 63 for mounting the workpiece W in the longitudinal direction. A driving roller 64 to be driven and a pressurizing means 70 for pressurizing the workpiece W in the lateral direction are provided.

  The pressurizing means 70 is disposed at a position shifted in the longitudinal direction from the first roller 71 mounted on the support base 75 so as to come into contact with the work W from one side, and is opposite to the work W. And a pressurizing tool 73 that pressurizes the first roller 71 and the second roller 72 relative to each other.

  In each of the shape adjustment lines 61 and 62, the second roller 72 is disposed between the plurality of first rollers 71, and the distance between the first roller 71 and the second roller 72 in the longitudinal direction of the workpiece W is the first shape adjustment. The line 61 is long and the second shape adjustment line 62 is short. On the other hand, the distance between the first roller 71 and the second roller 72 in the direction orthogonal to the longitudinal direction of the workpiece W is short in the first shape adjustment line 61 and long in the second shape adjustment line 62. .

  The pressurizing tool 73 of the pressurizing means 70 is mounted on the support base 75 so as to be movable, an actuating mechanism 78 that drives the moveable base 77, and a movable base 77 that can be adjusted in position. A position adjusting base 81 that supports the second roller 72, and an adjusting mechanism 82 that adjusts the position of the position adjusting base 81 relative to the moving base 77.

The operating mechanism 78 includes an air cylinder and the like, and moves the moving base 77 forward and backward in a direction crossing the shape adjustment lines 61 and 62. The forward movement position of the moving base 77 is regulated by a stopper 79.
The adjustment mechanism 82 includes an adjustment screw shaft 83 that can slightly adjust the distance between the movement base 77 and the position adjustment base 81 in a direction intersecting the shape adjustment lines 61 and 62, and the position of the movement base 77. And a micrometer 84 capable of measuring an adjustment amount of the distance to the adjustment base 81.

In order to adjust the shape of the workpiece W using such an apparatus, the workpiece W is first arranged on one or both of the shape adjustment lines 61 and 62, and the first roller 71, the second roller 72, and the placement of the pressing means 70 are placed. The work W is surrounded by the roller 63 and the driving roller 64.
In this state, the drive roller 64 is lowered and pressed against the workpiece W placed on the placement roller 63. Further, the position of the position adjusting base 81 with respect to the moving base 77 is precisely adjusted by rotating the adjusting screw shaft 83 while checking with the micrometer 84, and the position adjusting base 81 and the moving base 77 are moved by the operating mechanism 78. Move forward. As a result, the second roller 72 supported by the position adjustment base 81 is advanced and brought into contact with the workpiece W.

  The workpiece W is moved between the plurality of first rollers 71 and the second roller 72 while the workpiece W is moved in the longitudinal direction by the driving roller 64 while the second roller 72 is pressurized forward by the operating mechanism 78. Are relatively pressurized in a direction intersecting the longitudinal direction. At this time, since the advance amount of the second roller 72 is regulated by the stopper 79, it is not excessively pressurized. Thereby, the shape is adjusted while moving the workpiece W, and the straightness of the long workpiece W is improved.

According to the apparatus as described above, when the shape of the workpiece W is adjusted, the first roller 71 and the second roller 72 are arranged at positions shifted from each other and are relatively pressurized, If pressure is applied while moving the workpiece W, it is possible to continuously apply a bending load to each part of the workpiece W in the longitudinal direction. Therefore, it is easy to apply a large bending load for each part, and pressurization can be performed with less load than when the entire workpiece W is pressurized.
Moreover, since the long work W is pressed by the pressing means 70 while moving in the longitudinal direction, the shape can be adjusted in a wide range in the longitudinal direction. Therefore, the shape of the workpiece W can be adjusted efficiently with a simple structure.

W Work L1 Heating unit axis L2 Cooling unit axis R1 Radial shape adjustment region R2 Axial shape adjustment region 1 Heat treatment device 10 Heating unit 11 Heating coil 12 Support unit 20 Cooling unit 21 Cooling tank 22 Lifting base 23 Work holding unit 24 Lifting device 25 Placement roller 30 Shape adjustment device 31 Base 32 Radial pressure means 33 Axial pressure means 34 Inner roller 35 Outer roller 36 Radial pressure tool 37 Oscillating piece 38 Actuating mechanism 41 First roller 42 Second roller 43 Axial pressurizer 44 Strut 45 Elastic body 51 Inner support body 52 Outer support body 53 Screw shaft 60 Shape adjustment device 61 First shape adjustment line 62 Second shape adjustment line 63 Placement roller 64 Drive roller 70 Pressure means 71 First roller 72 Second roller 73 Pressurizing tool 75 Support base 77 Moving base 78 Actuating mechanism 79 Stopper 81 Position adjustment base 82 Adjustment mechanism 83 Adjustment screw shaft 84 Micrometer

Claims (6)

A workpiece shape adjusting device for adjusting a shape while rotating an annular workpiece,
A radial pressing unit that pressurizes the rotating workpiece in a radial direction; and an axial pressing unit that pressurizes the rotating workpiece in an axial direction.
The axial pressing means is a first roller that contacts one end of the workpiece in the axial direction, and a first roller that contacts the other end of the workpiece in the axial direction and is disposed at a position shifted in the circumferential direction from the first roller. Comprising two rollers, and an axial pressure tool that relatively pressurizes the first roller and the second roller in the axial direction,
The workpiece shape adjusting device, wherein the radial pressing means and the axial pressing means are provided overlapping each other. The workpiece shape adjusting device according to claim 1 , wherein the radial pressing unit and the axial pressing unit pressurize the heated workpiece while cooling. The axial direction pressing means includes a plurality of the first rollers disposed apart from each other in the circumferential direction of the workpiece, and the second roller disposed between the plurality of first rollers. The workpiece shape adjusting apparatus according to claim 1 or 2 . 4. The workpiece shape adjusting device according to claim 1 , wherein a plurality of the radial direction pressing means and the axial direction pressing means are provided in a circumferential direction of the workpiece. A step of adjusting the shape of the workpiece in the radial direction and the axial direction by pressing the rotating annular workpiece in the radial direction and pressing in the axial direction at a position overlapping each other,
In this step, the first roller is brought into contact with one end side in the axial direction of the work, and the second roller is brought into contact with the other end side in the axial direction of the work at a position shifted in the circumferential direction from the first roller, A work shape adjustment method in which a first roller and a second roller are relatively pressed in the axial direction. The work shape adjusting method according to claim 5, wherein the shape is adjusted while the heated work is cooled.

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