JP2016026885A - Compression type straightening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compression type straightening device which accurately and efficiently relieves strain of a workpiece at low device cost.SOLUTION: A compression type straightening device includes: a portal frame 10 which traverses a machine platen 2 in a horizontal direction RL and may move in a fore and aft direction FR; and a hydraulic cylinder 70. A spindle head 40 supporting the hydraulic cylinder 70 is suspended from a slide part 30 which slides on a beam part 15 of the portal frame 10 and has a support plate 41, which is arranged in parallel to a lower surface 15a of the beam part 15, below the lower surface 15a. The hydraulic cylinder 70 is detachably suspended on the support plate 41 in a posture in which a rod 71 faces downward relative to an upper surface 2a of the machine platen 2 in a vertical direction VT. The hydraulic cylinder 70 is housed between the lower surface 15a of the beam part 15 and the support plate 41 of the spindle head 40. A rod side end surface 72a of the hydraulic cylinder 70 is anchored to the support plate 41 to attach the hydraulic cylinder 70 to the spindle head 40 so that an anti-rod side end surface 72b of the rod 71 is arranged parallel to the lower surface 15a of the beam part 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pressure type strain relief device that applies a pressing force to the surface of a metal plate material and deforms and removes the strain generated in the metal plate material.

  Products such as cans and flooring materials for transportation vehicles are formed by processing into metal plate materials (workpieces) with a press machine, and distortion is inevitably generated in the workpieces during pressing. In the subsequent process, distortion removal is performed using a distortion removal apparatus. An example of the distortion removing device is disclosed in Patent Documents 1 and 2.

  In each of Patent Documents 1 and 2, a portal frame is movably attached to a lower bed on which a workpiece is placed, and a press device main body is mounted along the upper beam of the portal frame. It is a strain removing device that is movably mounted and moves the portal frame and the press device main body by transmitting the driving force of the electric motor via a chain or the like by remote control. In these devices, the bending die detachably attached to the tip of the hydraulic cylinder in the press device main body is a position of the distortion of the work piece placed on the lower bed by the movement of the press device main body and the portal frame. The workpiece is moved freely, and the workpiece is pressed at that position to remove the distortion. In the techniques of Patent Documents 1 and 2, the gate frame and the press device main body, which have been fixed so far, have a structure that can be moved relative to the lower bed. Is no longer necessary, and workability is improved.

Japanese Patent No. 2923452 JP-A-11-151600

  However, the techniques of Patent Documents 1 and 2 automatically move the bending mold by driving the electric motor by remote operation, and the number of parts increases in the conveyance mechanism in the portal frame and the press apparatus main body. There is a problem that the structure becomes complicated and the cost of the apparatus becomes high. In particular, in the machining industry, cost competition has been extremely intense in recent years, and in the situation where product manufacturing costs have been demanded at low cost, a processor performing strain relief is seeking to reduce the equipment cost of the strain relief device. It was.

  Further, in the techniques of Patent Documents 1 and 2, the work placed on the surface plate can be strained by moving the bending die downward, but the work has a cross section like an H-shaped steel, for example. In the case of a shape (a connecting portion corresponding to an H-shaped steel web is a shape orthogonal to a flat plate portion corresponding to a flange), distortion may not be properly removed if the bending die is operated only in the vertical direction. The reason for this is that when the work is placed on the surface plate, the distortion of the connecting part or the flat part of the flat plate is opposite to the reference line along the work longitudinal direction when viewed from the position where the thickness is taken into consideration. If the bending end is used to remove the strain at the end, the workpiece cannot be removed efficiently unless the workpiece is supported at both ends sandwiching the strained portion and a pressing force is applied between the two fulcrums.

  In particular, for example, when trying to remove 1 mm of warped warp at the end of the flat plate for an H-shaped work with a total length of 7000 mm, the direction of the work can be changed at the time of strain relief work, It is necessary to move the workpiece, and when the workpiece is lifted and moved, the weight of the workpiece is large. Therefore, a new strain is generated in the workpiece by lifting. In order to suppress it as much as possible, it is necessary to press the flat plate portion from the end side thereof in the horizontal direction along the surface of the platen with a larger pressing force. This technology cannot be used at all. In addition, during the strain relief operation, the rod operation of the hydraulic cylinder is accelerated to remove strain one after another with a relatively small pressing force, or the rod operation is delayed to increase the pressing force. In addition, there is an operation for removing distortion that is difficult to remove, and Patent Documents 1 and 2 are not a distortion removing device corresponding to such work contents.

  The present invention has been made to solve the above-described problems, and provides a pressure type strain removing device that can accurately and efficiently remove strain of a workpiece at low cost. Objective.

In order to achieve the above object, a pressure type strain relief device according to the present invention has the following configuration.
(1) A gate-shaped frame that straddles the left-right direction of the surface plate on which the workpiece is placed and is movable in the left-right direction and the front-rear direction perpendicular to the up-down direction, and a hydraulic cylinder that generates a pressing force. In the pressurization type strain relief device, a spindle head that supports the hydraulic cylinder is suspended by a slide portion that is slidable with a beam portion of the frame, and the spindle head is spaced downward from a lower surface of the beam portion. At least one support plate parallel to the lower surface at the position where the hydraulic cylinder has a posture in which the rod of the hydraulic cylinder is directed vertically downward with respect to the upper surface of the surface plate, or the hydraulic pressure The rod of the cylinder is detachably suspended from the support plate of the spindle head in a posture along a horizontal direction.
(2) In the pressurization type strain relief device described in (1), the hydraulic cylinder is positioned between the lower surface of the beam portion and the support plate of the spindle head in a posture in which the rod is directed vertically downward. The rod-side end surface of the hydraulic cylinder is attached to the spindle head by mooring the rod-side end surface of the hydraulic cylinder so that the opposite-rod-side end surface on the opposite side of the rod is parallel to the lower surface of the beam portion. It is characterized by that.
(3) In the pressurization type strain relief device described in (1), an anchoring portion that holds the hydraulic cylinder in which the rod is arranged in a horizontal direction and can be suspended on the support plate of the spindle head is provided. It has the cylinder holding means which has, It is characterized by the above-mentioned.
(4) In the pressurization type strain relief device described in (3), the cylinder holding means is configured such that the anchoring portion is used as the support plate of the spindle head with the axis extending along the vertical direction as a center with respect to the spindle head. It is attached to the said spindle head by mooring so that rotation is possible, It is characterized by the above-mentioned.

(5) In the pressurization type strain relief device described in any one of (1) to (4), a strain amount grasping means capable of quantitatively grasping the state of strain in the workpiece is provided. It is characterized by this.
(6) In the pressurization type strain relief device described in (5), the strain amount grasping means is attached to the slide portion and is provided to be movable relative to the beam portion of the frame. Features.
(7) In the pressurization type strain remover described in (5) or (6), the origin position remote from the surface of the workpiece including strain and the surface of the workpiece are positive during measurement. A measurement reference position that is a reference part and one or more measurement contrast positions that are different from the measurement reference position are set, and a distance between the measurement reference position and the origin position is set as a reference distance, and the measurement contrast If the distance between the position and the origin position is a contrast distance, the strain amount grasping means measures the amount of strain based on the relative distance difference between the reference distance and the contrast distance. It is characterized by.
(8) In the pressurization type strain relief device described in (7), the strain amount measuring means is disposed so as to be operable in a direction along an operation direction of the rod of the hydraulic cylinder, and is provided on a surface of the workpiece. A contactable workpiece contact portion, a displacement detection portion that detects the displacement of the workpiece contact portion that has moved, and a display portion that displays the displacement detected by the displacement detection portion, It is characterized by.
(9) In the pressurization type strain relief device described in (8), the strain amount measuring means has a measuring fluid cylinder in which the piston rod expands and contracts relative to the cylinder by controlling the flow of the fluid. The workpiece contact portion is connected to the piston rod and operates in conjunction with the movement of the piston rod, and the displacement detector moves within the stroke range of the piston rod. Detecting the displacement of the piston rod.
(10) In the pressurization type strain relief device according to any one of (1) to (9), the platen includes the platen, and the platen is attached to a platen frame configured by combining aggregates. Is formed of a welded welded structure.

The operation and effect of the pressure type strain relief device of the present invention having the above configuration will be described.
In the pressurization type strain relief device of the present invention, a gate-shaped frame that straddles the left-right direction of the surface plate on which the workpiece is placed and is movable in the left-right direction and the front-rear direction perpendicular to the up-down direction, In a pressurization type strain relief device having a hydraulic cylinder to be generated, a spindle head that supports the hydraulic cylinder is suspended from a slide portion that can slide with a beam portion of the frame, and the spindle head is below the lower surface of the beam portion. Have one or more support plates parallel to the lower surface at a position spaced apart to the side, and the hydraulic cylinder has a posture in which the rod of the hydraulic cylinder faces vertically downward with respect to the upper surface of the surface plate, or The rod is detachably suspended from the support plate of the spindle head in a posture along the horizontal direction. Because of this feature, the work piece can be lifted because it can change the orientation of the work piece and reduce the frequency of moving the work piece on the surface plate during the work. Therefore, it is possible to suppress the generation of new distortion in the workpiece. Therefore, the work can be efficiently distorted in a shorter time and with high accuracy. In addition, the cost of the pressure type strain relief device of the present invention is low, and in the strain relief operation using this pressure type strain relief device, the primary process mainly processing the workpiece out of the product manufacturing cost. By performing (a pressing process, a bending process, etc.), the cost of the secondary process (a distortion removal process, a deburring process, etc.) which arises secondary can be suppressed.

  Therefore, according to the pressurization type strain relief device according to the present invention, there is an excellent effect that the strain of the workpiece can be accurately and efficiently removed at low cost.

  In the pressurization type strain relief device of the present invention, the hydraulic cylinder is accommodated between the lower surface of the beam portion and the support plate of the spindle head in a posture in which the rod is vertically downward, and is on the opposite side of the rod. The rod-side end surface of the hydraulic cylinder is anchored to a support plate so that the rod-side end surface is parallel to the lower surface of the beam portion, and is attached to the spindle head. This feature speeds up the rod operation of the hydraulic cylinder and removes strain one after another with a relatively small pressing force, and slows the rod operation and applies more pressing force to extract strain that is difficult to remove. When performing work, a hydraulic cylinder having a cylinder diameter (rod diameter) suitable for the work can be easily attached to or removed from the spindle head. Therefore, it is possible to efficiently set up the distortion removing work.

  In addition, the pressurization type strain relief device of the present invention includes a cylinder holding means that holds a hydraulic cylinder in which the rod is arranged in a horizontal direction and has a mooring portion that can be suspended from the support plate of the spindle head. For example, as shown in FIG. 23, in a state in which a workpiece having a large weight of 7000 mm and an H shape is placed on a surface plate, In the flat plate part, when trying to remove the distortion at the end that warps against the reference line along the workpiece longitudinal direction when viewed from the position where the thickness is taken into view, the work piece is supported at both ends sandwiching the distortion part. By applying a pressing force in the horizontal direction from between the two fulcrums, the distortion can be efficiently removed.

  Further, in the pressurization type strain relief device of the present invention, the cylinder holding means anchors the anchoring portion to the spindle head support plate so as to be rotatable about the axis along the vertical direction with respect to the spindle head. For example, as shown in FIG. 23, the rod is vertical when removing the distortion of the flat plate portion generated in the longitudinal direction of the H-shaped workpiece as shown in FIG. Compared to the case where the strain relief work is performed with a hydraulic cylinder arranged in a direction along the direction, the direction of the work piece having a large weight is changed depending on the part where the strain relief is performed, or the work piece is placed on the surface plate. The frequency of movement can be reduced.

  In addition, the pressurization type strain relief device of the present invention is characterized by comprising strain amount grasping means capable of quantitatively grasping the state of strain in the workpiece. Due to this feature, the conventional measurement work in which the distance between the yarn and the strained part is measured using a measuring device such as a height gauge in response to the measurement work required for the operator to know the amount of strain at the strained part of the workpiece. However, the work for removing the distortion of the workpiece is completely unnecessary, and the productivity and efficiency of the work for removing the distortion are greatly improved as compared with the work for removing the distortion including the conventional measurement work. Further, the time required for the work for removing the strain and the labor of the operator can be greatly reduced.

  In the pressurization type strain relief device of the present invention, the strain amount grasping means is attached to the slide portion and is provided so as to be movable relative to the beam portion of the frame. With this feature, when removing the distortion of the workpiece with the pressing force of the hydraulic cylinder, it is possible to grasp the magnitude of the distortion by the strain amount grasping means at the position where the pressing force is applied to the workpiece, Work setup can be simplified. In particular, when the strained parts are dispersed over a plurality of places on the work piece placed on the upper surface of the surface plate, when performing the strain removing operation sequentially for each of the plurality of strained parts, By simply moving the frame and the slide portion as necessary, the two steps of grasping the amount of strain and pressing by pressing force can be reasonably and easily performed at each strained portion. Therefore, it is possible to reduce the work burden on the worker with respect to the distortion removing work. Further, since the productivity of the strain relief operation is improved, it is possible to contribute to the reduction of the processing cost for performing the strain relief.

  Further, in the pressure type strain relief device of the present invention, the origin position away from the surface of the workpiece including strain, the measurement reference position that is a positive reference part at the time of measurement with respect to the surface of the workpiece, and the measurement If one or more measurement contrast positions at different parts from the reference position are set, the distance between the measurement reference position and the origin position is taken as the reference distance, and the distance between the measurement comparison position and the origin position is taken as the comparison distance, the distortion The amount grasping means is a distortion amount measuring means for measuring the magnitude of distortion based on a relative distance difference between the reference distance and the comparison distance. With this feature, the operator can grasp the strain amount of the strained portion generated in the work piece with a more accurate numerical value, so that the position where the pressing force of the hydraulic cylinder is applied to the strained portion based on the obtained distance difference. In addition, the magnitude of the pressing force to be applied can be appropriately determined. As a result, since more accurate distortion removal can be realized, the added value of the workpiece (product) after distortion removal can be increased.

  Further, in the pressurization type strain relief device of the present invention, the strain amount measuring means is disposed so as to be operable in a direction along the operation direction of the rod of the hydraulic cylinder, and is capable of contacting the surface of the workpiece. And a displacement detector that detects the displacement of the workpiece contact portion that has moved, and a display that displays the displacement detected by the displacement detector. Due to this feature, the displacement of the workpiece contact portion that is moved until the pressing head capable of contacting the surface of the workpiece directly contacts the surface of the workpiece is detected. Since the displacement is detected by the displacement detection unit, the displacement displayed on the display unit is a highly reliable measurement value.

  Further, in the pressurization type strain relief device of the present invention, the strain amount measuring means has a measuring fluid cylinder in which the piston rod expands and contracts relative to the cylinder by controlling the flow of the fluid, and the workpiece The contact portion is connected to the piston rod and operates in conjunction with the movement of the piston rod, and the displacement detection portion detects the displacement of the piston rod that has moved within the stroke range of the piston rod. And Due to this feature, as a member that contacts the surface of the workpiece, for example, in the case of a pressure head, when the amount of strain is measured, the operation start position of the pressure head, which is the starting point for measuring the amount of strain, and the surface of the workpiece Since the distance from the contact position that is in contact with is based on the amount of movement of the piston rod configured to increase the accuracy of straightness, the accuracy of the detected displacement is also increased. Further, the above-described pressing head or the like plays a role of pressing the strained portion of the workpiece when removing the strained portion, and measures the amount of strain at the strained portion. Therefore, the structure of the pressure type strain relief device of the present invention can be simplified and the strain relief operation can be performed more rationally.

  The pressurization type strain relief device of the present invention includes a surface plate, and the surface plate is formed of a welded structure in which a plate material is welded to a surface plate frame configured by combining aggregates. Therefore, the size of the upper surface of the surface plate depends on the specifications of the size of the workpiece to be placed, the installation space of the pressure type strain relief device of the present invention, and the like. Even if they are different from each other, the production of the surface plate is simpler and the production period can be shortened as compared with the case where the surface plate is formed of a casting, so that the cost of the surface plate can be reduced.

It is a pressurization type strain relief apparatus which concerns on Example 1 of Embodiment 1, and shows the pressurization type strain relief apparatus in the state which attached the hydraulic cylinder to the spindle head. It is a front view which shows the portal frame of the pressurization type strainer which concerns on Example 1 of Embodiment 1, and is a figure which shows the pressurization type strainer which attaches a portal frame to the surface plate of the existing equipment. It is a top view of the flame | frame of the pressurization type strain relief apparatus shown in FIG. It is a side view of the flame | frame of the pressurization type strain relief apparatus shown in FIG. It is a front view of the portal frame of the pressurization type strain relief device concerning the modification of Embodiment 1. It is the top view which looked at the surface plate of the pressurization type strain relief apparatus shown in FIG. 1 from the downward direction. It is a side view of the surface plate shown in FIG. It is the side view which shows a slide part and a spindle head among the pressurization type strain relief apparatuses shown in FIG. 1, and is the figure which showed the beam part of the portal frame in the cross section. It is the top view which looked at the spindle head shown in Drawing 8 from the lower part. It is explanatory drawing which shows the spacer attached to the spindle head of the pressurization type distortion removing apparatus shown in FIG. It is explanatory drawing which shows the spacer similar to FIG. It is explanatory drawing which shows the spacer similar to FIG. It is explanatory drawing which shows the spacer similar to FIG. It is explanatory drawing which shows the spacer similar to FIG. It is a front view of the pressurization type strain relief apparatus which concerns on Example 2 of Embodiment 1, and is a figure which shows the pressurization type strain relief apparatus in the state which attached the cylinder fixture to the spindle head. FIG. 16 is a side view of the pressurization type strain relief device shown in FIG. It is a front view of a slide part and a spindle head among the pressurization type strain relief apparatuses shown in FIG. It is the side view which shows the slide part and spindle head which are shown in FIG. 17, and is the figure which showed the beam part of the portal frame in the cross section. FIG. 16 is a plan view of the pressure type strain relief device shown in FIG. 15. It is a front view of the cylinder fixture of the pressurization type strain relief device shown in FIG. It is a side view of FIG. It is a top view of FIG. It is the perspective view which showed typically the workpiece | work which removes distortion by the pressurization type distortion removal apparatus shown in FIG. It is explanatory drawing which showed typically the workpiece | work different from the workpiece | work shown in FIG. It is a figure which shows the pressurization type strain relief apparatus which concerns on Embodiment 2, and is a front view of the pressurization type strain relief apparatus which attached two slide parts with a distortion amount measurement unit. FIG. 26 is a plan view of the pressure type strain relief device shown in FIG. 25. FIG. 26 is a side view of the pressure type strain relief device shown in FIG. 25. FIG. 26 is an enlarged view of a portion X in FIG. In FIG. 25, it is the figure seen from the AA arrow direction, and is explanatory drawing which shows the structure of the attaching part of an upper surface side roller. FIG. 26 is a side view showing a slide portion with a spindle head and a strain amount measurement unit in the pressurization type strain relief device shown in FIG. 25, and a cross-sectional view showing a beam portion of the portal frame. In FIG. 30, it is the figure seen from the BB arrow direction, and is explanatory drawing which shows the structure of a spindle head and the structure of a part of distortion amount measurement unit. In FIG. 30, it is an enlarged view of the Y section. It is explanatory drawing which shows the press head and head position adjustment member which were comprised by the pressurization type strain relief apparatus which concerns on Embodiment 2. FIG. It is the figure seen toward the right side in FIG. 30, and is explanatory drawing which shows the display part of a distortion amount measurement unit. It is a figure explaining the connection structure of the 2nd support plate of the pressurization type strain relief apparatus which concerns on Embodiment 2, and the connection unit for suspension. It is a front view of the cylinder fixture used with the pressurization type strain relief apparatus which concerns on Embodiment 2. FIG. FIG. 37 is a plan view of FIG. 36. It is the figure which showed a mode that the distortion removal of a workpiece | work is performed by the horizontal direction press function of the pressurization type distortion removal apparatus which concerns on Embodiment 2. FIG. It is explanatory drawing which shows typically the point which measures the distortion amount of the distortion site | part which has arisen in the workpiece | work by the distortion amount measurement unit of the pressurization type strain relief apparatus which concerns on Embodiment 2, and is the figure which looked at the surface of the workpiece | work from the upper direction It is. It is explanatory drawing which looked at the long side direction of the workpiece | work shown in FIG. 39 from the near end surface side. It is explanatory drawing which looked at the short side direction of the workpiece | work shown in FIG. 39 from the right end surface side.

  Embodiments 1 and 2 of the present invention will be described in detail below with reference to the drawings. The pressurization type strain relief device of Embodiments 1 and 2 is, for example, with respect to the longitudinal direction of a workpiece (workpiece) having a total length of 7000 mm in which H-shaped steel materials are joined by welding with flat plates at the joints. It is used for the purpose of removing distortion or the like partially bent by about 1 mm in the orthogonal direction.

(Embodiment 1)
FIG. 1 is a front view showing a pressure type strain relief device according to an embodiment, in a state where a hydraulic cylinder is attached to a spindle head. FIG. 3 is a plan view of the portal frame of the pressure type strain relief device shown in FIG. 1, and FIG. 4 is a side view thereof. FIG. 6 is a plan view of the surface plate configured in the pressure type strain relief device as seen from below, and a side view thereof is shown in FIG.

  The pressure type strain relief device 1 straddles the surface plate 2 on which the workpiece W (workpiece) is placed, and the horizontal direction RL of the surface plate 2 and is orthogonal to the horizontal direction RL and the vertical direction (vertical direction VT). A gate-shaped gate-shaped frame 10 (frame) movable in the front-rear direction FR and a hydraulic cylinder 70 for generating a pressing force are provided. The spindle head 40 that holds the hydraulic cylinder 70 is provided to hang down from the slide portion 30 that can slide with the beam portion 15 of the portal frame 10. The platen 2 is made of a steel plate 4 (aggregate), and a plate member 5 is fixed by welding to a platen frame 3 which has ribs crossed vertically and horizontally to increase rigidity and strength in a frame combined in a square frame shape. Is formed.

  Since the surface plate 2 is formed by a welded structure of the surface plate frame 3 and the plate material 5, the upper surface 2a is selected according to the specifications such as the size of the work W to be placed and the installation space of the pressure type strain relief device 1. Even if the size of the platen varies depending on the pressure type strain relief device 1 to be manufactured, the platen 2 can be manufactured more easily and the manufacturing period can be shortened compared to the case where the platen is formed of a casting. The cost of the board 2 can be reduced. In the first embodiment, the pressurization type strain relief device 1 constituting the surface plate 2 is described as an example. However, instead of the surface plate 2 shown in FIG. A portal frame 10 shown in FIG. 2 may be attached to an existing equipment table (portion corresponding to the surface plate 2) to be used as the pressure type strain relief device 1A. Further, as shown in FIG. 5, a portal frame 10 </ b> A in which a column part 11 </ b> A partially projecting inward from the upper surface side rollers 13 on both sides in the left-right direction RL and a beam part 15 is assembled. .

  The portal frame 10 is formed by connecting two column portions 11 and 11 to a portal shape with a beam portion 15. A hydraulic unit 73 that supplies hydraulic oil to the hydraulic cylinder 70 is provided on the bracket 75 in the column portion 11 of the portal frame 10. Each of the lower ends of the column portions 11 and 11 has a receiving portion 12 that engages with the plate material 5 of the surface plate 2, and the receiving portion 12 together with the plate material 5 has a vertical downward pressing force generated by the hydraulic cylinder 70. Receive the reaction force. In addition, at the lower end of each column portion 11, two upper surface side rollers 13 that roll relative to the front and rear direction FR are provided on the upper surface 2a of the surface plate 2, and the upper surface side roller 13 travels on the upper surface 2a. Thus, the portal frame 10 is easily moved in the front-rear direction FR. Furthermore, two end surface side rollers 14 that roll the side surface 2b of the surface plate 2 relatively in the front-rear direction FR are provided at the lower end of each column portion 11.

  The slide part 30 has a substantially square shape that covers the entire circumference of the beam part 15, and has a structure that can be freely attached to and detached from the beam part 15. On the opposite side of the lower surface 15a of the beam portion 15, two cam rolling surfaces 17 that are parallel to each other extend in the longitudinal direction of the beam portion 15 (left-right direction RL). Four cam followers 31 that run while rolling on the cam rolling surface 17 are provided. Movement of the slide part 30 with respect to the beam part 15 is performed by a manual operation by an operator. A groove 16 is recessed between the rolling surfaces 17, 17, and a head fixture 32 is provided above the groove 16. The head fixture 32 fixes the slide portion 30 at a predetermined position of the beam portion 15 by tightening the slide portion 30 toward the beam portion 15.

Example 1
In the first embodiment, the hydraulic cylinder 70 is attached to the spindle head 40, and the workpiece W is dedistorted by applying the pressing force F by the rod 71 of the hydraulic cylinder 70 from above to below. FIG. 8 is a side view showing a slide portion and a spindle head in the pressure type strain relief device shown in FIG. 1, and is a view showing a cross section of a beam portion of a portal frame, and the spindle head shown in FIG. A plan view seen from below is shown in FIG. As shown in FIG. 8, the spindle head 40 is detachably integrated with the beam portion 15 of the portal frame 10 and the slide portion 30 slidable. The spindle head 40 has one or more support plates 41 (one in FIG. 8) parallel to the lower surface 15 a at positions spaced downward from the lower surface 15 a of the beam portion 15. As shown in FIG. 9, the support plate 41 has a notch 41a in which one side of the quadrangular plate material is cut out in a semicircular arc shape toward the back side, and the support plate 41 corresponds to the notch 41a. One side is opened, and the periphery along the other three sides is covered with a side plate, and a space that is a storage space for the hydraulic cylinder 70 is formed inside.

  The hydraulic cylinder 70 is detachably suspended from the support plate 41 of the spindle head 40 in a posture in which the rod 71 of the hydraulic cylinder 70 faces downward in the vertical direction VT with respect to the upper surface 2a of the surface plate 2. Specifically, the hydraulic cylinder 70 is accommodated between the lower surface 15 a of the beam portion 15 and the support plate 41 of the spindle head 40, and the anti-rod side end surface 72 b on the opposite side of the rod 71 has the lower surface 15 a of the beam portion 15. The rod-side end surface 72a of the hydraulic cylinder 70 is moored to the support plate 41 so as to be parallel to the main shaft head 40 and attached thereto. That is, the outer diameter of the rod-side end surface 72a of the hydraulic cylinder 70 is larger than the radius of curvature of the arc at the notch 41a of the support plate 41, and the outer peripheral edge of the rod-side end surface 72a is placed on the outer peripheral edge of the notch 41a. As a result, the hydraulic cylinder 70 is held by the spindle head 40.

  By the way, during the strain relief work, the rod operation of the hydraulic cylinder 70 is accelerated to remove strain one after another with a relatively small pressing force, or the rod operation is delayed to increase the pressing force. Over time, there is also work to remove distortion that is difficult to remove. In such an operation, when a relatively small pressing force is required, a hydraulic cylinder 70 having a small cylinder diameter (rod diameter) is used. When a larger pressing force is required, a cylinder diameter ( A hydraulic cylinder 70 having a large rod diameter is used. In the present embodiment, the hydraulic cylinder 70 is merely mounted on the support plate 41 without being fixed to the spindle head 40 by fixing means such as bolt fastening. Therefore, the hydraulic cylinder 70 can be replaced only by extracting a hydraulic hose (not shown) extending from the hydraulic unit 73 on the coupler 74 side of the hydraulic cylinder 70 before replacement and connecting it to the coupler 74 of the hydraulic cylinder 70 to be replaced. Very good.

  When the thrust of the hydraulic cylinder is different, the diameter of the hydraulic cylinder is different, so that the radius of curvature of the arc of the notch 41a is set so that the hydraulic cylinder 70 matched to the required thrust can be placed on the support plate 41 of the spindle head 40. The adjustment is made in accordance with the diameter of the hydraulic cylinder 70 to be placed. As shown in FIGS. 10 to 14, the adjustment is performed by placing the spacers 42 (42 B, 42 C) having different radii of curvature R 1, R 2 (R 1 ≠ R 2) on the support plate 41 as well as the hydraulic cylinder 70 to be used. The spindle head 40 including the support plate 41 in which the radius of curvature of the arc of the notch 41 a is set in accordance with the diameter may be attached to the slide portion 30. Further, if the diameter of the mounted hydraulic cylinder 70 is different, it may be necessary to adjust the gap in the internal space of the spindle head 40. In this case, the spacer 42 (42A, 42D, 42E) is moved around the hydraulic cylinder 70. You may arrange in.

(Example 2)
In the second embodiment, a cylinder attachment 50 (cylinder holding means) that holds the hydraulic cylinder 70 is attached to the spindle head 40, and the pressing force F by the rod 71 of the hydraulic cylinder 70 is applied in the horizontal direction to This is a case where distortion is removed. FIG. 15 is a front view of the pressure type strain relief device according to Example 2 of the embodiment, and is a view showing the pressure type strain relief device in a state where a cylinder mounting tool is attached to the spindle head. FIG. 16 is a side view of the pressure type strain relief device shown in FIG. 15, and is a view in which the surface plate is not shown.

  The strain relief work by the pressurization type strain relief device 1 includes, for example, the pressure applied by the hydraulic cylinder 70 according to work conditions such as the shape and weight of the workpiece W in which the strain has occurred, the position at which the strain is pressed, and the precision of strain relief. This is done by selectively changing the orientation. In the first embodiment, the hydraulic cylinder 70 is directly attached to the main spindle head 40. However, in the second embodiment, as shown in FIGS. 15 and 16, the main spindle head 40 supports the cylinder attachment 50, and the hydraulic pressure is increased. The cylinder 70 is attached to and held by the cylinder fixture 50.

  17 is a front view of the slide portion and the spindle head of the pressure type strain relief device shown in FIG. 15, and is a side view thereof. FIG. 18 is a cross-sectional view of the beam portion of the portal frame. Show. FIG. 19 is a plan view of the pressurization type strain relief device shown in FIG. 15 and shows a state where the cam follower is covered with a cover. The hydraulic cylinder 70 is detachably suspended from the support plate 41 of the spindle head 40 in a posture along the horizontal direction HZ (left-right direction RL, front-rear direction FR) with respect to the upper surface 2a of the surface plate 2. The Specifically, at least one support plate 41 parallel to the lower surface 15a (three in FIG. 17) is provided at a position spaced downward from the lower surface 15a of the beam portion 15. The three support plates 41 change the pressing position of the hydraulic cylinder 70 by the rod 71 in accordance with the height at which the workpiece W is strained, so as to adjust the position in the vertical direction VT that suspends the cylinder attachment 50. Provided. As shown in FIG. 9, the support plate 41 has a notch 41a in which one side of the rectangular plate material is cut out in a semicircular arc shape toward the back side, and the support plate 41 is shown in FIG. As described above, the one side with the notch 41a is opened, the periphery along the other three sides is covered with a side plate, and a space that is a storage space for the mooring portion 51 of the cylinder fixture 50 is formed inside. ing.

  20 is a front view of a cylinder fixture in the pressurization type strain relief device shown in FIG. 15, and a side view thereof is shown in FIG. 21, and a plan view thereof is shown in FIG. The cylinder attachment 50 holds a hydraulic cylinder 70 in which a rod 71 is arranged in a posture along the horizontal direction HZ, and has a mooring portion 51 that can be suspended on three support plates 41 of the spindle head 40. As shown in FIG. 15, the cylinder attachment 50 anchors the anchoring portion 51 to the support plate 41 of the spindle head 40 so as to be rotatable about the axis M along the vertical direction VT. Is attached to the spindle head 40.

  Specifically, in the cylinder fixture 50, as shown in FIGS. 20 to 22, a cylinder support portion 53 and a workpiece support portion 54 are arranged with an intermediate support member connected to the main shaft 52 interposed therebetween, The cylinder support portion 53, the workpiece support portion 54, and both end portions of the intermediate support member are connected by a connection portion 55. The hydraulic cylinder 70 has a rod 71 attached to the cylinder support 53 in a posture along a horizontal direction HZ parallel to the upper surface 2 a of the surface plate 2. In the second embodiment, two disk-like anchoring portions 51 having an outer diameter larger than the radius of curvature of the notch 41 a of the support plate 41 are formed on the main shaft 52.

  The cylinder fixture 50 is suspended from the spindle head 40 by accommodating the anchoring portion 51 in the inner space of the spindle head 40 below the lower surface 15 a of the beam portion 15 and anchoring it in the notch 41 a of the support plate 41. Attached. As the anchoring portion 51 rotates relative to the support plate 41 of the spindle head 40, the cylinder attachment 50 can rotate 180 degrees.

  FIG. 23 is a perspective view schematically showing a workpiece to be strain-removed by the pressure-type strain remover shown in FIG. 15, and an explanatory diagram schematically showing a workpiece different from the workpiece shown in FIG. As shown in FIG. As an example, the workpiece W shown in FIG. 23 is a frame in which a plate material is welded in a shape like an H-shaped steel material such as a total length of 7000 mm, a width of 100 mm, and a height of 500 mm, and is used as a flooring material for a transportation vehicle. Is. The workpiece W is warped due to welding as indicated by bold arrows. For example, the warp of about 1 mm with respect to the longitudinal direction of the workpiece W, that is, distortion, or the workpiece W shown in FIG. The generated strain is removed by the pressure type strain relief device 1. When removing the distortion generated in the workpiece W, as shown in FIG. 20, the inclusion 56 is sandwiched between the rod 71 of the hydraulic cylinder 70 and the workpiece W, and the workpiece is supported on the reaction force support portion 57 of the workpiece support portion 54. In the state where W is in contact, the pressing force by the hydraulic cylinder 70 is applied to the strained portion of the workpiece W via the inclusion 56.

  As described above, in the pressurization type strain relief device 1 according to the first embodiment, the horizontal direction RL of the surface plate 2 on which the workpiece W is placed is straddled, and the horizontal direction RL and the vertical direction (vertical direction VT). Main shaft head 40 that supports the hydraulic cylinder 70 in the pressurization-type strain relief device 1, 1 </ b> A including the portal frame 10, 10 </ b> A that can move in the front-rear direction FR orthogonal to the hydraulic pressure cylinder and the hydraulic cylinder 70 that generates a pressing force. However, the spindle head 40 is supported in a position parallel to the lower surface 15a at a position spaced below the lower surface 15a of the beam portion 15 by being slid on the slide portion 30 slidable with the beam portion 15 of the portal frame 10, 10A. Having at least one plate 41, the hydraulic cylinder 70 is in a posture in which the rod 71 is directed downward in the vertical direction VT with respect to the upper surface 2a of the surface plate 2, or the rod 71 is in a posture along the horizontal direction HZ. , The support plate 41 of the spindle head 40, to be detachably suspended, characterized by. Due to this feature, the work W can be lifted because the weight of the work W can be reduced because the direction of the work W can be changed depending on the part where the strain is removed and the frequency of moving the work W on the upper surface 2a of the surface plate 2 can be reduced. Thus, it is possible to suppress the generation of new distortion in the workpiece W. Therefore, distortion of the workpiece W can be efficiently performed in a shorter time and with high accuracy. Further, the cost of the pressure type strain relief device 1 is low, and in the strain relief operation using this pressure type strain relief device 1, the primary process (pressing) that mainly processes the workpiece W out of the product manufacturing cost. By performing a process, a bending process, etc., the cost of the secondary process (a distortion removal process, a deburring process, etc.) which arises secondary can be suppressed.

  Therefore, according to the pressurization type strain relief device 1 according to the first embodiment, there is an excellent effect that the strain of the workpiece W can be accurately and efficiently removed at low cost.

  In the pressurization type strain relief device 1 according to the first embodiment, the hydraulic cylinder 70 is positioned between the lower surface 15a of the beam portion 15 and the support plate 41 of the spindle head 40 in a posture in which the rod 71 is directed downward in the vertical direction VT. The rod-side end surface 72a of the hydraulic cylinder 70 is moored to the notch 41a of the support plate 41 so that the non-rod-side end surface 72b on the opposite side of the rod 71 is parallel to the lower surface 15a of the beam portion 15. It is attached to the spindle head 40. Due to this feature, the rod operation of the hydraulic cylinder 70 is accelerated to remove strain with a relatively small pressing force, and the rod operation is slowed down to apply a larger pressing force and strain that is difficult to remove. When performing the extraction operation, the hydraulic cylinder 70 having a cylinder diameter (rod diameter) suitable for the operation can be easily attached to or removed from the main spindle head 40. Therefore, it is possible to efficiently set up the distortion removing work.

  Further, in the pressurization type strain relief device 1 according to the first embodiment, the rod 71 holds the hydraulic cylinder 70 arranged in a posture along the horizontal direction HZ, and is suspended from the notch 41a of the support plate 41 of the spindle head 40. It is characterized in that it comprises a cylinder fixture 50 with a possible anchoring part 51. With this feature, for example, as shown in FIG. 23, in a state in which a workpiece W having a total length of 7000 mm and an H shape and a large weight is placed on the upper surface 2 a of the surface plate 2, , The workpiece W is supported at both ends sandwiching the distorted portion when the strain at the end warped with respect to the reference line along the workpiece longitudinal direction is viewed from the position where the thickness is taken into view, and both fulcrums are supported. By applying a pressing force in the horizontal direction HZ from between, the distortion can be removed efficiently.

  Further, in the pressurization type strain relief device 1 according to the first embodiment, the cylinder attachment 50 has the anchoring portion 51 as the support plate 41 of the spindle head 40 around the axis M along the vertical direction VT with respect to the spindle head 40. For example, as shown in FIG. 23, it is generated in the longitudinal direction of an H-shaped workpiece W having a total length of 7000 mm, as shown in FIG. The direction of the workpiece W having a large weight depending on the portion where the strain is removed, compared with the case where the strain relief operation is performed with the hydraulic cylinder in which the rod is arranged in the vertical direction when removing the distortion of the flat plate portion. And the frequency of moving the workpiece W on the upper surface 2a of the surface plate 2 can be reduced.

(Embodiment 2)
Next, a pressure type strain relief device according to Embodiment 2 will be described. In the pressurization type strain relief device 1 of the first embodiment described above, only the spindle head 40 that directly or indirectly supports the hydraulic cylinder 70 is attached to the slide portion 30. In the pressure type strain relief device of the second embodiment, in addition to such a spindle head, a strain amount measuring unit as a strain amount measuring means is provided for each slide portion. Therefore, the description will focus on the parts different from the first embodiment, and the description of the others will be simplified or omitted.

  FIG. 25 is a view showing the pressure type strain relief device according to the second embodiment, and is a front view of the pressure type strain relief device to which two slide portions with strain amount measuring units are attached. In FIG. 25, for convenience of explanation, the slide portion with the strain amount measurement unit shown on the left side is shown with the cover removed, so the display portion of the strain amount measurement unit is not shown. Actually, the display section of the strain amount measuring unit is attached to the slide sections on the left and right sides. FIG. 26 is a plan view of the pressure type strain relief device shown in FIG. 25, and a side view thereof is shown in FIG. As in the first embodiment described above, in this second embodiment as well, the electrical wiring, hydraulic piping, air piping, piping equipment, and the like are not shown in FIGS.

  In the second embodiment, a vertical pressing function (on the right side in FIG. 25) that removes the workpiece W by applying a pressing force F from the rod 71 of the hydraulic cylinder 70 downward from above, and the rod 71 of the hydraulic cylinder 70. The pressure type strain relief device 101 having a horizontal direction pressing function (left side in FIG. 25) for removing the workpiece W by applying the pressing force F in the horizontal direction will be described.

  First, the portal frame 110 of the pressure type strain relief device 101 will be described. FIG. 28 is an enlarged view of a portion X in FIG. 25, and FIG. 29 is an explanatory view showing the structure of the attachment portion of the upper surface side roller as seen from the direction of arrows AA in FIG. The gate-type frame 110 is formed by connecting two pillar portions 111 and 111 with a beam portion 115 into a gate shape. As shown in FIGS. 28 and 29, the upper surface side roller attaching portion 119 disposed below each column portion 111 is provided with two upper surface side rollers 113 that rotate about the axis t1. The two upper surface side rollers 113 run while relatively rolling on the upper surface 102a of the surface plate 102 in the front-rear direction FR. The upper surface side roller mounting portion 119 is covered with a cover 120.

  In addition, the end surface side roller 114 that rotates about the axis t2 is provided on the bracket disposed on the lower end side of each column portion 111. These two end face side rollers 114 run on both side faces 102b of the surface plate 102 while relatively rolling on the side roller rolling faces 106 arranged on the side faces 102b in the front-rear direction FR. In the upper surface side roller 113 and the end surface side roller 114, since the lubricant such as grease is always injected into the rotating shaft, the upper surface side roller 113 and the end surface side roller 114 rotate smoothly.

  The portal frame 110 is rolled by the four upper surface rollers 113 with respect to the upper surface 102 a of the surface plate 102, and is rolled by the four end surface side rollers 114 with respect to the side roller rolling surface 106 of the surface plate 102. Due to traveling, the vehicle moves in the front-rear direction FR. In particular, the portal frame 110 has a structure in which a U-shaped steel material, a flat steel material, or the like is three-dimensionally assembled by welding as shown in FIGS. It is relatively lightweight while ensuring rigidity. This movement of the portal frame 110 is performed by a manual pushing operation by an operator, but due to the rolling running by the four upper surface side rollers 113 and the four end surface side rollers 114, the portal frame 110 has a relatively small external force (for example, It is easy to move smoothly using the handle 134 even when the adult is lightly pressed with one hand.

  In the portal frame 110, receiving portions 112 that are engaged with the end portions of the plate member 105 of the surface plate 102 are provided at the lower ends of the column portions 111 and 111, respectively. The part 112 receives the reaction force of the pressing force generated in the hydraulic cylinder 70 together with the plate material 105. Further, the portal frame 110 has two end surface rollers 114 in contact with the side roller rolling surface 106 on one side and the two end surface rollers 114 on the other side in the lateral direction RL. By being brought into contact with the moving surface 106, it is attached to the surface plate 102 while suppressing the shake in the left-right direction RL.

  Next, the slide part 130 will be described. The slide portion 130 has a substantially square shape that covers the entire circumference of the beam portion 115 and is configured to be freely detachable from the beam portion 115. On the opposite side of the lower surface 115a of the beam portion 115, two cam rolling surfaces 117 parallel to each other are extended in the longitudinal direction of the beam portion 115 (left-right direction RL). Two beam roller rolling surfaces 118 that are parallel to each other extend in the longitudinal direction of the beam 115. The slide portion 130 travels while the four cam followers 131 roll on the cam rolling surface 117, and a total of eight beam rollers 132 run on the beam roller rolling surface 118 on both sides. Thus, the beam 115 is relatively moved. The movement of the slide unit 130 is performed manually by an operator using the handle 134 and moves smoothly with a relatively small external force (for example, a force that an adult can lightly press with one hand). The slide unit 130 is fixed by a head fixture (not shown) as in the first embodiment.

  FIG. 30 is a side view showing a slide portion with a spindle head and a strain amount measuring unit in the pressurization type strain relief device shown in FIG. 25, and is a view showing a cross section of a beam portion of the portal frame. FIG. 31 is a view as seen from the direction of arrows BB in FIG. 30, and is an explanatory view showing the structure of the spindle head and the structure of a part of the strain amount measuring unit. 32 is an enlarged view of a Y portion in FIG. The spindle head 140 has one or more first support plates 141 (support plates) parallel to the lower surface 115a (one in FIG. 30) at positions spaced downward from the lower surface 115a of the beam portion 115. . The first support plate 141 is suspended by four support plate suspension members 142 connected to the lower side surface portion of the slide portion 130. As shown in FIG. 31, the first support plate 141 has a notch 141a in which one side of a rectangular plate material is cut out in a semicircular arc shape toward the back side.

  When the pressurizing strain relief device 101 uses the vertical pressing function (right side in FIG. 25), the hydraulic cylinder 70 has the rod-side end surface 72a (see FIG. 33) at the notch 141a of the first support plate 141. By being placed on the outer peripheral edge of the first support plate 141, the first support plate 141 is held. The first support plate 141 is provided with a safety bar 143 that can be opened and closed with respect to the opening of the notch 141a. For some reason, the mounted hydraulic cylinder 70 is detached from the opening of the first support plate 141. Prevents falling.

  Next, the strain amount measuring unit 180 will be described. FIG. 33 is an explanatory diagram illustrating a pressing head and a head position adjusting member that are configured in the pressure-type strain relief device according to the second embodiment. FIG. 34 is an explanatory diagram showing a display unit of the strain amount measuring unit. One strain amount measuring unit 180 is attached to one slide portion 130 as one of the strain amount grasping means capable of quantitatively grasping the state of strain of the workpiece W, and is relative to the beam portion 115 of the frame 110. It is provided to be movable. The strain amount measuring unit 180 is disposed so as to be operable in a direction along the operation direction of the rod 71 of the hydraulic cylinder 70, and has a workpiece contact portion 181 that can contact the surface Wa of the workpiece W, and a workpiece that has moved. A displacement detection unit 182 that detects the displacement of the workpiece contact unit 181 and a display unit 183 that displays the displacement detected by the displacement detection unit 182 are provided.

  This will be specifically described. In the second embodiment, as shown in FIG. 30, the strain amount measuring unit 180 controls the flow of air, which is a fluid, so that the piston rod 192 expands and contracts relative to the cylinder body 191 (cylinder). A dynamic extrusion type pneumatic cylinder 190 (measuring fluid cylinder) is provided. The cylinder main body 191 is opposed to the slide portion 130 on the opposite side of the rod, and the piston rod 192 faces upward. The cylinder main body 191 is positioned lower than the tip position of the piston rod 192 to the cylinder fixing member 194 via the cylinder mounting member 193. It is fixed. In addition to such a pneumatic cylinder 190, the strain amount measuring unit 180 includes a workpiece contact portion 181, a second support plate 198, a pressed portion 199, a joint portion 200, and the like.

  In the pneumatic cylinder 190, when air is supplied from an air supply source such as an existing compressor in the factory to an input port of the cylinder body 191 through an air regulator (not shown), a predetermined value (for example, 490 kPa) is obtained. The piston rod 192 extends linearly and rises due to the air pressure. On the other hand, when the air of the cylinder body 191 is exhausted to the outside from the output port, the extended piston rod 192 is contracted and returned to the cylinder body 191 side by the elastic force of the spring built in the cylinder body 191 and lowered. To do.

  The pneumatic cylinder 190 has a displacement detection unit 182 that detects the displacement H of the piston rod 192 that has moved within the stroke range of the piston rod 192. The displacement detection unit 182 is electrically connected to an electric control unit (not shown) and a display unit 183. The display unit 183 measures the displacement H of the piston rod 192 relative to the origin position set within the stroke range from the origin position to the stop position, and the displacement detection unit 182 measures the measured value. As shown in FIG. 34, numerical values are displayed on the screen. The origin position can be changed as necessary, and the measurement value displayed on the display unit 183 can arbitrarily change the number of significant digits after the decimal point by setting.

  In the strain amount measuring unit 180, the workpiece contact portion 181 is connected to the piston rod 192 and operates in conjunction with the movement of the piston rod 192. The work piece contact portion 181 is attached by properly using the piston rod 192, the first connection member 195, the second connection member 196, the second support plate 198, the joint portion 200, and the required length. It comprises a head position adjusting member 163 and a pressing head 161 that is brought into contact with the workpiece W. The first connecting member 195 connected to the piston rod 192 is connected to the second support plate 198 via two second connecting members 196 held by a total of eight second connecting member guides 197. Thereby, the second support plate 198 moves up and down by the extension movement of the piston rod 192.

  The second support plate 198 is disposed at a position lower than the first support plate 141 of the spindle head 140, and a pressed portion 199 is provided on the upper surface side (upper side in FIG. 30) of the second support plate 198. Yes. In the second embodiment, in the case of a horizontal direction pressing function in which the pressing force F by the rod 71 of the hydraulic cylinder 70 is applied in the horizontal direction to remove the distortion of the workpiece W, the second support plate 198 has the beam portion 115. It also functions as a support plate for the spindle head 140 parallel to the lower surface 115a at a position spaced below the lower surface 115a. The pressed portion 199 is a portion that directly receives the pressing force of the extending rod 71 by the hydraulic cylinder 70 held by the first support plate 141 when the pressurizing strain relief device 101 uses the vertical pressing function. . The pressing force of the hydraulic cylinder 70 that has acted on the pressed portion 199 is transmitted to the pressing head 161 via the joint portion 200 and the head position adjusting member 163.

  That is, when utilizing the vertical direction pressing function of the pressurization type strain relief device 101, the piston rod 192 is extended to the top dead center position by a constant air pressure value such as 490 kPa as exemplified above by the air regulator. The second support plate 198 is raised to the position shown in FIG. On the other hand, when the rod 71 of the hydraulic cylinder 70 held by the first support plate 141 extends downward, the rod 71 presses the pressed portion 199. In the hydraulic cylinder 70, the propulsive force (pressing force) of the rod 71 operating at a large hydraulic value such as several tens of MPa is several tens of tons, and the rod 71 of the hydraulic cylinder 70 resists the propulsive force of the piston rod 192. Is transmitted to the pressing head 161 through the joint portion 200 and the head position adjusting member 163. At this time, in the pneumatic cylinder 190, the air pressure in the cylinder main body 191 is controlled by an air regulator and adjusted so as not to exceed a set constant air pressure value.

  When transmitting the pressing force acting on the pressed portion 199 to the joint portion 200 side, as shown in FIG. 33, a plurality of auxiliary connecting members 201 are provided between the first support plate 141 and the second support plate 198. Intervened. Thereby, since it is possible to suppress an excessive bending stress from being applied to the second support plate 198 due to the pressing force of the hydraulic cylinder 70, the pressing force of the hydraulic cylinder 70 can be mechanically and efficiently transmitted to the pressing head 161. is made of.

  The head position adjusting member 163 is selectively used with respect to the workpiece W placed on the surface plate 102 in consideration of the inter-work distance between the surface Wa (see FIGS. 39 to 41) of the portion where distortion is removed and the joint portion 200. . When the distance between the workpieces is relatively large, the first head position adjusting member 163A (163) is used as shown in FIG. On the other hand, when the distance between the workpieces is relatively small, the third head position adjusting member 163C (163) is used as shown in FIG. When the distance between the workpieces is a size between them, the second head position adjusting member 163B (163) is used as shown in FIG.

  As shown in FIG. 33, the head position adjusting member 163 is formed in a substantially round bar shape having a convex portion 162 on one end side and a joint portion 164 on the other end side. The convex portion 162 is a portion provided with a step having a diameter smaller than the outer periphery of the head position adjusting member 163. The convex portion 162 has an annular groove that is further recessed with a reduced diameter. The joint portion 164 includes a counterbore formed so that another central portion of the head position adjusting member 163 can be inserted in the axial direction (left and right direction in FIG. 33) and another convex portion 162 can be inserted, and the head passes through the counterbore. A through hole penetrating the position adjusting member 163 in the radial direction and a female screw that can be screwed into the male screw of the fastener 202 are provided. Further, the pressing head 161 has a convex portion 162 having the same structure as the head position adjusting member 163.

  The second support plate 198 is provided with a joint part 200 that is freely detachable from the joint part 164 of the head position adjusting member 163. As shown in FIG. 32 and the like, the joint portion 200 is formed in a shape having an annular surrounding portion that surrounds the joint portion 164 of the inserted head position adjusting member 163. A through hole and a female screw are formed in the surrounding portion. In the joint portion 200, the head position adjusting member 163 is connected to the joint by inserting a pin (not shown) through the through hole of the surrounding portion and the through hole of the joint portion 164 of the head position adjusting member 163 inserted into the surrounding portion. The unit 200 is connected in a positioned state. Then, when the male screw of the fastener 202 and the female screw of the surrounding portion are screwed together and the male screw tip of the fastener 202 is directed toward the groove of the convex portion 162 and the fastener 202 is tightened, the head position adjustment is performed. The member 163 is fixed to the joint unit 200.

  On the other hand, when the pressing head 161 is inserted into the head position adjusting member 163, the convex portion 162 of the pressing head 161 is inserted into the spot of the joining portion 164 of the head position adjusting member 163 and joined to the male screw of the fastener 202. The female screw of the part 164 is screwed. Then, when the fastener 202 is tightened with the male screw tip of the fastener 202 facing the groove of the convex portion 162 of the pressing head 161, the pressing head 161 is fixed to the head position adjusting member 163.

  FIG. 35 is a diagram illustrating a connection structure between the second support plate and the suspension connection unit. When the pressurization type strain relief device 101 uses the horizontal direction pressing function (left side in FIG. 25), the suspension connection unit 165 is attached to the joint portion 200 as shown in FIG. The suspension connection unit 165 includes a round bar-like suspension connection member 166 having a through-hole penetrating in the radial direction on the upper end side, two sets of bearings 167 which are thrust ball bearings, and a cylindrical body portion with a flange. It consists of a cylinder mounting fixture fixing portion 168 that integrates a sandwiching portion having a shape provided on the peripheral side and a flat plate, and a fastener 169.

  Below the suspension connection member 166, bearings 167 are arranged on both sides of the sandwiched portion of the cylinder fixture fixing portion 168, and together with the lower end portion of the suspension connection member 166, the suspension connection member 166 and By tightening the fastener 169 to be screwed, the cylinder attachment fixing portion 168 is attached to the suspension connection member 166 so as to be rotatable about the axis M by 180 degrees.

  The upper end portion of the suspension connecting member 166 is inserted into the surrounding portion of the joint portion 200, and a pin (not shown) is inserted into the through hole of the surrounding portion and the through hole of the suspension connecting member 166, whereby the suspension connecting member 166 is inserted. Are connected to the joint part 200 in a positioned state. Then, the male screw of the fastener 202 and the female screw of the surrounding portion are screwed together, the male screw tip of the fastener 202 is directed toward the groove of the convex portion 162, and the fastener 202 is tightened. The member 166 is fixed to the joint unit 200.

  The cylinder attachment 150 is fixedly connected to the lower surface 168a of the cylinder attachment fixing portion 168 by bolting. FIG. 36 is a front view of a cylinder fixture used in the pressure type strain relief device according to the second embodiment, and a plan view thereof is shown in FIG. FIG. 38 is a diagram illustrating a state in which the work is strain-removed by the horizontal pressing function of the pressure-type strain remover according to the second embodiment.

  As shown in FIGS. 36 and 37, the cylinder attachment 150 is common to the basic structure of the cylinder attachment 150 of the first embodiment, and the cylinder support portion 153 and the workpiece support portion 154 include a cylinder attachment. They are arranged with an intermediate support member including a cylinder attachment fixing portion attachment portion 151 as an attachment position of the attachment fixing portion 168 interposed therebetween. The cylinder support portion 153, the workpiece support portion 154, and both end portions of the intermediate support member are connected by a connection portion 155. Two reaction force support portions 157 are disposed on the workpiece support portion 154. Each of the reaction force support portions 157 is attached to the workpiece support portion 154 so as to be freely movable. As a result, as shown in FIG. 38, when the pressing force by the hydraulic cylinder 70 is applied to the workpiece W in the work for removing the strain, the position where the reaction force of the pressing force is received is the state of the distortion generated in the workpiece W. Therefore, it is possible to perform the distortion removing work efficiently.

  Next, on the premise that the distortion of the workpiece W is removed using the vertical direction pressing function of the pressurization type strain relief device 101, the strain amount measuring unit 180 measures the strain amount of the strain portion generated in the workpiece W. The measurement procedure in this case will be described. FIG. 39 is an explanatory view schematically showing the point of measuring the strain amount of the strain site generated in the workpiece by the strain amount measuring unit, and is a view of the surface of the workpiece as viewed from above. 40 is an explanatory view of the long side direction of the work shown in FIG. 39 as viewed from the front end face side, and an explanatory view of the short side direction of the work as seen from the right end face side is shown in FIG. . Note that FIGS. 39 to 41 are exaggerated for easy understanding of the contents for convenience of explanation. Further, FIGS. 39 to 41 are only diagrams illustrating the work of measuring the strain amount and removing the strain with the pressurization type strain remover 101 for the strained portion, and are simply illustrated and illustrated. 39 to 41, the actual work content is dependent on the shape of the workpiece W, the position and size of the generated strain site, the number of strain sites, etc. Different.

  As shown in FIGS. 39 to 41, a large strain is generated in the workpiece W in the four first to fourth strain regions Q1, Q2, Q3, and Q4 around the reference region P. Conventionally, in the operation of removing such strain (first to fourth strained portions Q1, Q2, Q3, Q4), first, an operator uses a yarn (as a measurement reference) horizontally along the upper surface 102a of the surface plate 102 ( In FIGS. 40 and 41, a thread that is stretched in parallel with the two-dot chain line is stretched, and the presence of distortion is visually confirmed. After the confirmation, the operator applies a pressing force by the hydraulic cylinder to the first to fourth strained portions Q1 to Q4 in a spot manner and deforms the workpiece.

  At this time, in order to confirm whether or not the pressing force is properly applied to the workpiece, the distance between the yarn and the strained portion (in the strain removal of the workpiece in which the pressing force of the hydraulic cylinder 70 is applied downward, When removing workpiece distortion with horizontal pressure difference and hydraulic cylinder 70 pressing force applied, measure the horizontal distance between the yarn and the strained part for each strained part using a measuring device such as a height gauge or dial gauge. To do. Based on the measurement result, the operator determines whether or not it is necessary to continue to apply the pressing force to deform the workpiece, and presses the workpiece against the workpiece until the amount of distortion falls within the allowable range. Remove the distortion of the workpiece while repeating the measurement work alternately. Then, the worker performs this work for all distortions occurring in the entire work. Such a work process is very time-consuming and time-consuming, and its work efficiency is low.

  On the other hand, in the pressurization type strain remover 101 of the second embodiment, the operator can measure the measurement reference position P, which is a reference portion that is positive at the time of measurement, with respect to the surface Wa of the workpiece W including strain, One or more measurement contrast positions (first measurement comparison position Q1, second measurement comparison position Q2, third measurement comparison position Q3, four positions illustrated in FIG. 39 in the part different from position P, 4 Check the contrast position Q4). This measurement contrast position is a strained part (first to fourth strained parts Q1, Q2, Q3, Q4) generated on the surface Wa of the workpiece W. The reference distance is the distance between the measurement reference position P and the origin position, and the measurement comparison position (first measurement comparison position Q1, second measurement comparison position Q2, third measurement comparison position Q3, fourth measurement comparison position Q4) and the origin position. The distance measurement unit 180 measures the magnitude of distortion based on the relative distance difference h (h1, h2, h3, h4) between the reference distance and the comparison distance.

  This will be specifically described. As shown in FIG. 25, in the pressurization type strain relief device 101, the right slide part 130 having a vertical pressing function specification is attached below the second support plate 198 via a head position adjusting member 163. The head 161 plays a role for removing the strain by pressing the strain portion of the workpiece W. In addition, the pressing head 161 also serves as a measurement contact that contacts the surface Wa of the workpiece W shown in FIGS. 39 to 41.

  The operator visually confirms the presence of the first to fourth strained portions Q1, Q2, Q3, and Q4, and then lowers the piston rod 192 to move the pressing head 161 first to the reference portion P (measurement reference position P). ). As shown in FIG. 40 and FIG. 41, the reference portion P is a portion with a distortion amount of zero (or a distortion amount within an allowable range and a size close to zero). This is a measurement reference position P that can be a relative origin with respect to the first to fourth measurement contrast positions Q1 to Q4. When the pressing head 161 is lowered toward the measurement reference position P, the displacement Hp (reference distance) of the piston rod 192 accompanying the movement is displayed on the display unit 183 of the strain amount measurement unit 180.

  Next, the operator once returns the piston rod 192 to the origin position, then moves the portal frame 110 and the slide part 130 as necessary, lowers the piston rod 192 again, and moves the pressing head 161 to It is made to contact 1st distortion site | part Q1 (1st measurement contrast position Q1). Then, when the pressing head 161 is lowered toward the first strained portion Q1, the displacement Hq1 (contrast distance) of the piston rod 192 accompanying the movement is displayed on the display unit 183 of the strain amount measuring unit 180. Next, the operator checks the height difference h1 (distance difference) between the displayed displacement Hp with respect to the measurement reference position P and the displayed displacement Hq1 with respect to the first measurement contrast position Q1. Next, the operator pushes the rod 71 of the hydraulic cylinder 70 downward while keeping the pressing head 161 in contact with the first measurement contrast position Q1, so that the height difference h1 approaches zero as much as possible. The pressing force of 70 is transmitted to the pressing head 161 through the pressed portion 199.

  Similarly to the first strained part Q1, the operator also presses the pressing head 161 with respect to the second strained part Q2, the third strained part Q3, and the fourth strained part Q4. It is made to contact Q4 (2nd, 3rd, 4th measurement contrast position Q2, Q3, Q4). Next, the operator confirms the displacements Hq2, Hq3, and Hq4 (contrast distances) of the piston rod 192 accompanying the downward movement toward the second, third, and fourth strain sites Q2, Q3, and Q4 on the display unit 183, respectively. Then, the operator pushes the rod 71 of the hydraulic cylinder 70 downward while keeping the pressing head 161 in contact with the second measurement comparison position Q2 (third measurement comparison position Q3, fourth measurement comparison position Q4). , The height difference h2 between the displacement Hq2 and the displacement Hp (the height difference h3 between the displacement Hq3 and the displacement Hp, the height difference h4 between the displacement Hq4 and the displacement Hp) (distance difference) of the hydraulic cylinder 70 is as close to 0 as possible. The pressing force is transmitted to the pressing head 161 via the pressed portion 199. Thus, the pressurization type strain relief device 101 according to the second embodiment measures the strain amount and removes the strain at the strain site.

  The operation and effect of the pressure type strain relief device 101 according to the second embodiment will be described. Similar to the pressurization-type strain remover 1 of the first embodiment described above, the pressurization-type strain remover 101 of the second embodiment can accurately and efficiently remove the distortion of the workpiece W at an inexpensive apparatus cost. There is an excellent effect.

  Further, the second embodiment has the same actions and effects as those described in paragraphs [0042] to [0044]. In addition to these actions and effects, there are the following actions and effects.

  The pressurization type strain relief device 101 according to the second embodiment is characterized by including a strain amount measuring unit 180 that can quantitatively grasp the state of strain of the workpiece W, such as a height gauge. The conventional measurement work in which the distance between the yarn and the strained part is measured using a measuring device is completely unnecessary in the work W distortion removal work, and the productivity and efficiency related to the distortion removal work include the conventional measurement work. Compared to the work to remove strain, it is greatly improved. Further, the time required for the work for removing the strain and the labor of the operator can be greatly reduced.

  Further, in the pressurization type strain relief device 101 according to the second embodiment, the strain amount measuring unit 180 is attached to the slide portion 130 and provided to be movable relative to the beam portion 115 of the portal frame 110. It is characterized by. Due to this feature, in removing the distortion of the workpiece W by the pressing force of the hydraulic cylinder 70, the strain amount measuring unit 180 can grasp the magnitude of the distortion at the position where the pressing force is applied to the workpiece W. Work setup can be simplified. In particular, when strain parts are dispersed over a plurality of locations on the workpiece W placed on the upper surface 102a of the surface plate 102, when the strain removing operation is sequentially performed for each of the plurality of strain sites. By simply moving the portal frame 110 and the slide portion 130 as necessary, the two steps of grasping the amount of strain and pressing by the pressing force can be rationally and easily performed at each strained portion. Therefore, it is possible to reduce the work burden on the worker with respect to the distortion removing work. Further, since the productivity of the strain relief operation is improved, it is possible to contribute to the reduction of the processing cost for performing the strain relief.

  Further, in the pressurization type strain removing device 101 according to the second embodiment, a measurement reference that is a reference portion that is positive at the time of measurement with respect to the origin position away from the surface Wa of the workpiece W including strain and the surface Wa of the workpiece W. One or more first measurement contrast positions Q1 (in this embodiment, in addition to the first measurement contrast position Q1, the second measurement contrast position Q2 and the third measurement) that are at positions different from the position P and the measurement reference position P The comparison position Q3 and the fourth measurement comparison position Q4 are also set), the distance between the measurement reference position P and the origin position is set as the displacement Hp, and the first measurement comparison position Q1 (second, third, and fourth measurements) is set. If the distance between the contrast positions Q2, Q3, Q4) and the origin position is the displacement Hq1 (displacement Hq2, Hq3, Hq4), the strain amount measuring unit 180 will calculate the displacement Hp and the displacement Hq1 (displacement Hq2, Hq3, Hq4). Relative height difference h1 (h2, h3 Based on h4), measuring the magnitude of the distortion, characterized by. Due to this feature, the operator can grasp the strain amount (corresponding to the height difference h1 etc.) of the strain portion generated in the workpiece W with a more accurate numerical value. Therefore, based on the obtained height difference h1 etc., the hydraulic cylinder The position at which the pressing force of 70 is applied to the strained part and the magnitude of the pressing force to be applied can be appropriately determined. As a result, since more accurate distortion removal can be realized, the added value of the workpiece W (product) after distortion removal can be increased.

  Further, in the pressurization type strain relief device 101 according to the second embodiment, the strain amount measuring unit 180 is disposed so as to be operable in the direction along the operation direction of the rod 71 of the hydraulic cylinder 70 and contacts the surface Wa of the workpiece W. A possible workpiece contact portion 181, a displacement detection portion 182 that detects the displacement H of the workpiece contact portion 181 that has moved, and a display portion 183 that displays the displacement H detected by the displacement detection portion 182; It is characterized by having. Due to this feature, the displacement H of the workpiece contact portion 181 that is moved until the pressing head 161 included in the workpiece contact portion 181 directly contacts the surface Wa of the workpiece W is the displacement detection portion 182. Therefore, the displacement H displayed on the display unit 183 is a highly reliable measurement value.

  In particular, the upper surface 102a of the surface plate 102 is formed with high flatness accuracy. The workpiece W is placed on such a high-precision upper surface 102a, and the strain amount is measured by the strain amount measuring unit 180 provided on the portal frame 110 by the pressing head 161 of the workpiece contact portion 181. Is lowered toward the upper surface 102a of the surface plate 102 and is brought into direct contact with the surface Wa of the workpiece W. Therefore, the operation start position of the workpiece contact portion 181 that is the starting point for measuring the amount of strain is not easily affected by an artificial error factor by the operator during measurement, and the second measurement position Q1 is not limited to the second measurement contrast position Q1. Even when the measurement comparison position Q2, the third measurement comparison position Q3, and the fourth measurement comparison position Q4 are measured, the acquired displacements Hq1, Hq2, Hq3, and Hq4 are highly reliable measurement values.

  Further, in the pressurization type strain relief device 101 according to the second embodiment, the strain amount measuring unit 180 controls the air flow, so that the pneumatic cylinder 190 in which the piston rod 192 expands and contracts relative to the cylinder body 191. The workpiece contact portion 181 is connected to the piston rod 192 and operates in conjunction with the movement of the piston rod 192, and the displacement detection portion 182 moves within the stroke range of the piston rod 192. It is characterized by detecting the displacement H of the piston rod 192 corresponding to that amount. Due to this feature, when measuring the strain amount, the distance between the operation start position of the pressing head 161 that is the starting point of the strain amount measurement and the contact position that is in contact with the surface Wa of the workpiece W is the accuracy of straightness. Since this is based on the amount of movement of the piston rod 192 that is configured to be high, the accuracy of the detected displacement H is also high. Further, the pressing head 161 plays a role of pressing the strained portion of the workpiece W when removing the strained portion, and contacts the surface Wa of the workpiece W when measuring the strain amount of the strained portion. It can also be used in combination with a role as a measuring touch. Therefore, the structure of the pressure type strain relief device 101 can be simplified, and the strain relief operation can be performed more rationally.

In the above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the first and second embodiments and the modified example of the first embodiment, and the second embodiment. The present invention can be changed and applied as appropriate without departing from the scope.
(1) For example, in Example 1 of Embodiment 1, the spindle head 40 provided with one fixed support plate 41 is illustrated, but in the spindle head 40, the mounting position of the support plate 41 can be appropriately changed. Also good.
(2) In Example 2 of Embodiment 1, the cylinder holding means is exemplified by the cylinder mounting tool 50 shown in FIGS. 20 to 22, but the cylinder holding means holds the hydraulic cylinder, The structure is such that the pressing force of the hydraulic cylinder can receive a reaction force from the workpiece, and it can be connected to the slide portion by a spindle head or the like. The cylinder mounting tool 50 shown in FIGS. It is not limited to the structure of the cylinder fixture 150 shown in FIG.

(3) For example, in the second embodiment, the strain amount grasping means is the strain amount measuring unit 180 using the pneumatic cylinder 190. However, in addition to the second embodiment, the strain amount grasping means uses, for example, a high-precision block gauge or shim set for each dimension such as 1 mm, 1.5 mm, and 2 mm as a measurement jig. Instead of the conventional thread, a high-level measurement reference bar is placed in a posture parallel to the upper surface of the surface plate and suspended from the slide part. A measuring jig having a suitable size may be interposed between the surface and the surface. Then, a strain amount may be acquired from the dimension of the intervening measuring jig to grasp the state of strain of the workpiece.
(4) For example, in the second embodiment, the strain amount measuring unit is the strain amount measuring unit 180 using the pneumatic cylinder 190. However, in addition to the second embodiment, the strain amount measuring means can be processed from above the workpiece by an infrared length measuring sensor, an ultrasonic length measuring sensor, a laser length measuring device or the like, for example, near the slide portion of the frame You may measure the distance to the surface of an object.

(5) For example, in the second embodiment, the strain amount of the workpiece W is measured on the premise that the strain of the workpiece W is removed by using the vertical direction pressing function of the pressurization type strain removing device 101. However, even when the pressurization type strain relief device according to the present invention is used as a horizontal direction pressing function for removing the workpiece by applying a pressing force by the rod of the hydraulic cylinder in the horizontal direction, the strain amount grasping means Alternatively, the strain amount measuring means may be configured to be able to measure the strain amount of the strain portion of the workpiece.
(6) For example, in the first and second embodiments, there is no particular means for acquiring the amount of movement and position information of the portal frames 10 and 110 with respect to the front-rear direction FR. A linear scale, a belt-like encoder, or the like is provided along the side roller rolling surface 106 or the like configured in the distortion removing device 101, or the portal frame 110 is driven by an electric motor or the like, although the cost increases. A rotary encoder that detects the rotation amount of the electric motor may be provided. Thereby, the operator can acquire the movement amount and position information of the frame.

(7) For example, in the second embodiment, the pneumatic cylinder 190 configured in the strain amount measuring unit 180 is a single-action push-out pneumatic cylinder with a built-in spring, but the measurement fluid cylinder is the same as that of the second embodiment. In addition, among the double-action cylinder and the single-action push-out type pneumatic cylinder, a pneumatic cylinder that does not incorporate a spring and returns the piston rod only by its own weight may be used.

DESCRIPTION OF SYMBOLS 1,101 Pressurization type strain relief device 2,102 Surface plate 2a, 102a (surface plate) upper surface 3 Surface plate frame 4 Steel (aggregate)
5,105 Board material 10,110 Portal frame (frame)
15, 115 Beam portions 15a, 115a Lower surfaces 30, 130 (beam portions) Slide portions 40, 140 Spindle head 41 Support plates 50, 150 Cylinder fitting (cylinder holding means)
51 Mooring portion 70 Hydraulic cylinder 71 Rod 72a Rod side end surface 72b Non-rod side end surface 141 First support plate (support plate)
180 Strain amount measuring unit (strain amount grasping means, strain amount measuring means)
181 Workpiece contact portion 182 Displacement detector 183 Display portion 192 Piston rod 190 Pneumatic cylinder (measuring fluid cylinder)
198 Second support plate (support plate)
W Workpiece Wa Work surface (workpiece surface)
M axis RL Left-right direction FR Front-back direction VT Vertical direction HZ Horizontal direction P Measurement reference position Q1 First measurement comparison position (measurement comparison position)
Q2 Second measurement contrast position (measurement contrast position)
Q3 Third measurement contrast position (measurement contrast position)
Q4 4th measurement contrast position (measurement contrast position)
H Displacement h Distance difference

Claims (10)

A gate-shaped frame that straddles the horizontal direction of the surface plate on which the workpiece is placed and is movable in the horizontal direction and in the front-rear direction perpendicular to the vertical direction, and a hydraulic cylinder that generates a pressing force. In the pressure type strain relief device,
A spindle head that supports the hydraulic cylinder is suspended from a slide portion that is slidable with the beam portion of the frame, and the spindle head is parallel to the lower surface at a position spaced below the lower surface of the beam portion. Having one or more support plates,
The hydraulic cylinder has a posture in which the rod of the hydraulic cylinder is vertically downward with respect to the upper surface of the surface plate or the rod of the hydraulic cylinder is in a posture along the horizontal direction of the spindle head. Detachably suspended on the support plate;
A pressurizing strain relief device. In the pressurization type strain relief device according to claim 1,
The hydraulic cylinder is housed between the lower surface of the beam portion and the support plate of the spindle head in a posture in which the rod is directed vertically downward, and an end surface on the opposite side of the rod on the opposite side of the rod is the rod The rod side end surface of the hydraulic cylinder is moored to the support plate so as to be parallel to the lower surface of the beam portion, and is attached to the spindle head,
A pressurizing strain relief device. In the pressurization type strain relief device according to claim 1,
The rod includes a cylinder holding means that holds the hydraulic cylinder disposed in a posture along a horizontal direction and has a mooring portion that can be suspended from the support plate of the spindle head.
A pressurizing strain relief device. In the pressurization type strain relief device according to claim 3,
The cylinder holding means is attached to the spindle head by anchoring the anchoring portion to the support plate of the spindle head so as to be rotatable about an axis along the vertical direction with respect to the spindle head. ,
A pressurizing strain relief device. In the pressurization type strain relief device according to any one of claims 1 to 4,
A strain amount grasping means capable of quantitatively grasping the state of strain of the work piece;
A pressurizing strain relief device. In the pressurization type strain relief device according to claim 5,
The strain amount grasping means is attached to the slide portion and provided so as to be movable relative to the beam portion of the frame.
A pressurizing strain relief device. In the pressure type strain relief device according to claim 5 or 6,
The origin position away from the surface of the workpiece including distortion, the measurement reference position that is a positive reference portion at the time of measurement with respect to the surface of the workpiece, and one that is different from the measurement reference position Set the above measurement contrast position,
When the distance between the measurement reference position and the origin position is a reference distance, and the distance between the measurement comparison position and the origin position is a comparison distance,
The strain amount grasping means is a strain amount measuring means for measuring the magnitude of strain based on a relative distance difference between the reference distance and the contrast distance;
A pressurizing strain relief device. In the pressure type strain relief device according to claim 7,
The strain amount measuring means is arranged so as to be operable in a direction along the operation direction of the rod of the hydraulic cylinder, and a workpiece contact portion capable of contacting the surface of the workpiece. A displacement detection unit that detects the displacement of the workpiece contact unit, and a display unit that displays the displacement detected by the displacement detection unit,
A pressurizing strain relief device. The pressurization type strain relief device according to claim 8,
The strain amount measuring means has a measuring fluid cylinder in which the piston rod expands and contracts relative to the cylinder by controlling the flow of the fluid,
The workpiece contact portion is connected to the piston rod and operates in conjunction with the movement of the piston rod;
The displacement detection unit detects the displacement of the piston rod that has moved within the stroke range of the piston rod;
A pressurizing strain relief device. In the pressurization type strain relief device according to any one of claims 1 to 9,
Comprising the surface plate, the surface plate is formed of a welded structure in which a plate material is welded to a surface plate frame configured by combining aggregates;
A pressurizing strain relief device.

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