JP6339750B1 - Angle adjustment tool - Google Patents

Abstract

An angle adjusting tool capable of confirming an angle at which a workpiece is bent at any time is provided. An angle adjusting tool 1 is a tool for checking a bending angle of a workpiece W which is sandwiched between an upper die 17 and a lower die 18 and bent so as to protrude downward. The angle adjusting tool 1 includes a fixing member 2, a slide member 10, a protruding portion 11, and an arm member 12. The fixing member 2 is fixed to the upper mold 17 or the lower mold 18 and is positioned on the outer side OS in the width direction of the workpiece W sandwiched between the upper mold 17 and the lower mold 18. The slide member 10 is slidable in the vertical direction with respect to the fixed member 2 and is located on the outer side OS in the width direction of the workpiece W. The protruding portion 11 protrudes above the workpiece W from the slide member 10. The arm member 12 is connected to the projecting portion 11 so as to be rotatable around the axis, is positioned on the outer side OS in the width direction of the workpiece W, and is bent to a target bending angle by the upper die 17 and the lower die 18. W and at least a part are parallel. [Selection] Figure 1

Description

  The present invention relates to an angle adjusting tool for confirming a bending angle of a workpiece that is sandwiched between an upper die and a lower die so as to be bent downward.

  For example, Patent Document 1 discloses a tool that measures the bending angle of a workpiece that is sandwiched between an upper mold and a lower mold and bent downward (substantially in a V shape). To measure the bending angle of the workpiece, measure the angle at which the workpiece is bent by attaching the tool of Patent Document 1 to the upper die or the lower die while maintaining the state where the workpiece is bent between the upper die and the lower die. To do.

JP 2004-148335 A

  In order to measure the angle of a bent workpiece using the tool of Patent Document 1, it is necessary to attach the tool to the upper die or the lower die after bending the workpiece with the upper die and the lower die. Therefore, the workpiece cannot be processed while checking the angle of the bent workpiece as needed.

  The subject of this invention is providing the angle adjustment tool which can confirm the angle by which the workpiece | work was bent at any time.

Means for Solving the Problems and Effects of the Invention

The angle adjusting tool of the present invention is
An angle adjusting tool for confirming a bending angle of a work that is sandwiched between an upper mold and a lower mold and bent to be convex downward,
A fixing member that is fixed to the upper die or the lower die and is positioned outside in the width direction of the work sandwiched between the upper die and the lower die;
A slide member that is slidable in a vertical direction with respect to the fixed member and is located outside in the width direction;
A protruding portion that protrudes upward from the slide member;
An arm member that is connected to the projecting portion so as to be rotatable around the axis and is positioned outside in the width direction, and is bent at a target bending angle by the upper die and the lower die and at least partly in parallel.
With
As the workpiece is bent so that the workpiece becomes convex downward between the upper die and the lower die, the workpiece pushes the protruding part and the slide member slides upward, so that the arm member moves upward while maintaining the posture of the arm member It is possible to confirm whether the workpiece is bent to the target bending angle by comparing the arm member with the workpiece.

  In the angle adjusting tool of the present invention, a slide member that is slidable with respect to a fixing member fixed to an upper die or a lower die slides upward as the work is bent by the upper die and the lower die. When the slide member slides upward, the arm member slides upward while maintaining the posture of the arm member. Since the arm member is at least partially parallel to the workpiece bent at the target bending angle, the part of the workpiece gradually moves along the arm member as the workpiece approaches the target bending angle. To do. Therefore, it is possible to bend the work while confirming the angle at which the work is bent at any time. The “outside in the width direction of the workpiece” means a side away from the workpiece in a direction parallel to a fold line formed by bending the workpiece with the upper mold and the lower mold.

In an embodiment of the present invention,
The protrusion has a bearing that can rotate around its axis,
The bearing may be pushed by the workpiece and the slide member may slide upward.

  When the bent work pushes the bearing, horizontal and vertical forces are applied to the bearing from the work. The slide member slides upward by a vertical force acting on the bearing, and the bearing rotates by a horizontal force acting on the bearing. Therefore, the slide member smoothly slides upward by the bearing.

In an embodiment of the present invention,
The upper mold or the lower mold includes a protruding plate that protrudes in the horizontal or substantially horizontal direction from the upper mold or the lower mold,
The fixing member may include a sandwiching portion that sandwiches the protruding plate from above and below.

  According to this, it can suppress that the position of a fixing member shifts to an up-down direction. For example, when the slide member does not slide smoothly, the position of the fixing member can be prevented from shifting in the vertical direction.

In an embodiment of the present invention,
The upper or lower mold is made of metal,
The fixing member may include a magnet that is fixed to the upper mold or the lower mold.

  According to this, it can suppress that the position of a fixing member shifts.

In an embodiment of the present invention,
The protrusion is a shaft member that can be attached to the slide member,
The slide member includes a first attachment portion that is located on the lower end side of the slide member and can be attached to the shaft member, and a second attachment portion that is located on the upper end side of the slide member and can be attached to the shaft member.
When fixing the fixing member to the upper mold, the shaft member is attached to the first attachment portion,
When fixing the fixing member to the lower mold, the shaft member may be attached to the second attachment portion.

  When bending a workpiece between the upper die and the lower die, the workpiece is positioned below the upper die and above the lower die. Since the workpiece pushes the shaft member by bending the workpiece so as to protrude downward, when the fixing member is fixed to the upper mold, if the shaft member pushed by the workpiece is attached to the lower end side of the slide member, the shaft It is possible to ensure a longer distance that the slide member slides than when the member is attached to the upper end side of the slide member. Similarly, when the fixing member is fixed to the lower mold, when the shaft member pushed by the work is attached to the upper end side of the slide member, the distance the slide member slides compared to the case where the shaft member is attached to the lower end side of the slide member. Can be secured for a long time. Therefore, since the slide member includes the first attachment portion and the second attachment portion, the angle adjustment tool can be used for both the upper die and the lower die.

The schematic perspective view which shows an example of the angle adjustment tool of this invention. The model exploded perspective view which decomposed | disassembled the angle adjustment tool of FIG. 1 into the fixed member and the movable member. The model perspective view which shows the fixing member of FIG. 2 (the 1). The schematic plan view which shows the fixing member of FIG. The schematic left view which shows the fixing member of FIG. The model perspective view which shows the fixing member of FIG. 2 (the 2). The model perspective view which shows the movable member of FIG. 2 (the 1). The model perspective view which shows the movable member of FIG. 2 (the 2). FIG. 4B is a schematic perspective view showing the slide member of FIG. 4A (part 1). FIG. 4B is a schematic perspective view showing the slide member in FIG. 4A (part 2). 4B is a schematic bottom view showing the slide member of FIG. 4A. FIG. FIG. 4B is a schematic plan view showing the slide member of FIG. 4A. The model perspective view which shows the protrusion part of FIG. 4A. The model perspective view which attached the protrusion part of FIG. 6A to the slide member. The model perspective view which attached the arm member to the protrusion part of FIG. 6B. The schematic front view of FIG. 6C. The model side view which attached the bearing member and the fixing member to the protrusion part of FIG. 6C. The model exploded perspective view which decomposed | disassembled the angle adjustment tool into the fixed member and the movable member. The schematic perspective view which shows a mode that the movable member was mounted | worn with the fixed member of FIG. The model perspective view which shows a press brake. The schematic front view of the press brake of FIG. The model expansion front view which shows a mode that the angle adjustment tool was attached to the press brake of FIG. The schematic side view which shows the state which has arrange | positioned the workpiece | work to the press brake which attached the angle adjustment tool. The schematic side view which shows the state which bent the workpiece | work of FIG. 13 with the press brake, and the workpiece | work contacted the bearing member. The schematic side view which shows the state which bent the workpiece | work of FIG. 14 with the press brake, and the workpiece pushed up the movable member. The model side view which shows the state which bent the workpiece | work of FIG. 15 with the press brake, and the workpiece | work bent along the arm member. The model perspective view which shows the angle adjustment tool attached to a lower mold | type. The schematic side view which shows the state which has arrange | positioned the workpiece | work to the press brake which attached the angle adjustment tool to the lower mold | type. The schematic perspective view which shows a mode that the position of the movable member was fixed with the nut in the angle adjustment tool of FIG. The model perspective view which shows the modification of an angle adjustment tool. The schematic perspective view which shows the fixing member of FIG. FIG. 21 is a schematic perspective view showing the movable member in FIG. 20 (No. 1). FIG. 21 is a schematic perspective view showing the movable member in FIG. 20 (part 2). The model perspective view which shows the modification of a protrusion part.

  FIG. 1 shows an angle adjusting tool 1 according to an example of the present invention. The angle adjusting tool 1 is attached to, for example, a press brake for bending an object (work) such as a thin plate. The angle adjusting tool 1 is a tool for confirming the angle of a workpiece bent by a press brake or the like. The angle adjusting tool 1 includes a fixed member 2 fixed to the press brake and a movable member 3 movable with respect to the fixed member 2.

  As shown in FIG. 2, the angle adjusting tool 1 can be disassembled into a fixed member 2 and a movable member 3. The fixing member 2 is a member that is formed in a substantially rectangular parallelepiped shape as shown in FIG. 3A and is fixed to a press machine that bends a work such as a press brake. The fixing member 2 includes a substantially rectangular parallelepiped main body part 4, a plate-like member 5 positioned at the upper end of the main body part 4, and screws 6 that are fixing members for fixing the main body part 4 and the plate-like member 5.

  The main body 4 is formed in a substantially rectangular parallelepiped lump. The main body 4 includes a groove 7 formed so as to cross the center of one side surface of the rectangular parallelepiped in the vertical direction, a plurality of holes 8 formed from the groove 7 toward the inside of the main body 4, and a groove 7 has a plurality of magnets 9 embedded in a side surface adjacent to the side surface on which 7 is formed. As shown in FIG. 3B, the groove 7 is formed in a substantially T shape when viewed from above (in plan view). The groove part 7 has a bottom 7a, a side wall 7b, and a ceiling wall 7c having an opening O. As shown in FIG. 3C, a plurality of holes 8 are formed at intervals in the vertical direction on the bottom 7a. As shown in FIG. 3A, the magnet 9 is formed in a disc shape and is positioned adjacent to the side surface of the main body 4.

  As shown in FIG. 3A, the plate-like member 5 has a recess 5a formed so as to be cut out so that one corner of a rectangular parallelepiped plate crosses in the longitudinal direction. As shown in FIG. 3C, the plate-like member 5 is formed in an approximately L shape when viewed from the side.

  As shown in FIG. 3D, the screw 6 fixes the plate-like member 5 placed on the upper end of the main body 4 to the main body 4. A gap is formed between the upper end of the main body 4 fixed by the screw 6 and the plate-like member 5 due to the concave portion 5 a of the plate-like member 5. For example, if a plate-like member is inserted so as to fit into this gap, the plate-like member can be sandwiched between the upper end of the main body 4 and the recess 5a. The upper end of the main body 4 and the recess 5a function as a sandwiching part SW.

  4A and 4B, the movable member 3 is mounted on the slide member 10 that slides with respect to the fixed member 2 (see FIG. 3A), the projecting portion 11 that projects from the slide member 10, and the projecting portion 11. The arm member 12 and the bearing member 13, and the fixing member 14 that fixes the arm member 12 and the bearing member 13 to the protruding portion 11 are provided. In addition, the movable member 3 includes an instruction member 15 used to indicate the angle of the workpiece bent by a press brake or the like.

  As shown in FIGS. 5A and 5B, the slide member 10 is formed in a substantially rectangular parallelepiped lump shape. The slide member 10 includes a convex portion 10 a protruding from the side surface of the slide member 10, a stopper portion 10 b located at the upper end of the slide member 10, and an attachment portion 10 c for attaching another member to the slide member 10. As shown in FIG. 5B, the convex portion 10a is formed so as to cross one side surface of the slide member 10 in the vertical direction. As shown in FIG. 5C, the convex portion 10a is formed in a substantially T shape when viewed from the bottom surface side. The convex portion 10a has a constricted portion 10a1 in which a portion in the middle of protruding from the slide member 10 is narrowed. Returning to FIG. 5A, the stopper portion 10 b is a member for preventing the slide member 10 from falling off the fixing member 2 (see FIG. 3A). As shown in FIG. 5A, the stopper portion 10b is located at the upper end of the slide member 10, and a washer 10b1 (see FIGS. 5C and 5D) that covers or covers a part of the constricted portion 10a1 and a nut disposed on the washer 10b1. 10b2, and a washer 10b1 and a bolt 10b3 for fixing the nut 10b2 to the slide member 10. As shown in FIG. 5A, the attachment portion 10c includes a first attachment portion 10c1 configured as a screw hole for attaching the protruding portion 11 (see FIG. 4A) to the slide member 10, and an indication member 15 (see FIG. 4A). ), And a second mounting portion 10c2 configured as a screw hole for mounting. The first attachment portion 10 c 1 is located on the lower end portion side of the slide member 10, and the second attachment portion 10 c 2 is located on the upper end portion side of the slide member 10.

  As shown to FIG. 6A, the protrusion part 11 is comprised as an axial member which has the one end part 11a and other end part 11b used as a screw part, and the column-shaped intermediate part 11c. As for the protrusion part 11, the one end part 11a is screwed by the screw hole of the 1st attachment part 10c1 (refer FIG. 5A), and the other end part 11b and the intermediate part 11c protrude in the horizontal direction from the side surface of the slide member 10 (FIG. 6B). ).

  An arm member 12 is attached to the protrusion 11 attached to the slide member 10 (FIG. 6C). The arm member 12 is formed in a flat plate shape. The arm member 12 includes a fan portion 12a that spreads in a flat fan shape, a through hole 12b that is formed through the thickness direction of the arm member 12 at a position that is a base point of the fan portion 12a, and a protruding plate 12c that protrudes from the fan portion 12a. And having. The fan 12a spreads out in a fan shape with the through hole 12b as a base point. The fan portion 12a has a saw-like outer edge portion 12a1 in which triangular blades are continuous, and a plurality of numerical values 12a2 serving as scales corresponding to the triangular blades of the outer edge portion 12a1. The through hole 12b is formed in a circular shape in which the diameter of the hole is larger than the diameter of the protruding portion 11 so that the protruding portion 11 that is a shaft-like member can be inserted. As shown in FIG. 6D, the protruding plate 12c has a first side 12c1 and a second side 12c2 that extend so as to be parallel to the tangent line T of the circular through hole 12b.

  In addition to the arm member 12, a bearing member 13 and a fixing member 14 are attached to the protrusion 11 to which the arm member 12 is attached, as shown in FIG. The bearing member 13 includes a ball bearing having an inner ring (not shown) into which the protruding portion 11 that is a shaft-like member is inserted, an outer ring 13a, and a ball (not shown) disposed between the inner ring and the outer ring 13a. Configured as The fixing member 14 fixes the arm member 12 slidably with respect to the slide member 10. The fixing member 14 includes a washer 14a located on the left side of the bearing member 13, a spring washer 14b, a thick washer 14c, a first nut 14d located on the right side of the bearing member 13, and a second nut 14e. The nuts 14d and 14e are screwed into the protruding portion 11 with the bearing member 13 sandwiched between the washers 14a to 14c and the nuts 14d and 14e. Therefore, the arm member 12 is fixed to the protruding portion 11 so that the arm member 12 is pressed against the slide member 10 by the washers 14a to 14c. However, by applying an external force to the arm member 12, the arm member 12 can be slidably rotated around the protrusion 11 around the protrusion 11. When the external force applied to the arm member 12 is removed, the rotation of the arm member 12 is stopped, the posture of the arm member 12 is maintained, and the arm member 12 is fixed to the protruding portion 11. The diameter of the bearing member 13 is larger than the diameter of each member of the fixed member 14.

  Returning to FIG. 2, the indicating member 15 is attached along the fan portion 12 a of the arm member 12 fixed to the protruding portion 11. The indication member 15 is a member for indicating the angle of the workpiece bent by the press brake. The indicator member 15 includes a flat indicator plate 15a indicating the angle of the workpiece to be bent, and a screw 15b serving as a fixing portion for fixing the indicator plate 15a to the slide member 10. The indication plate 15a has a tip portion 15a1 indicating a scale such as the numerical value 12a2 of the fan portion 12a, and a through hole (not shown) through which the screw 15b is inserted in the thickness direction of the indication plate 15a. The screw 15b is inserted into the through hole of the indication plate 15a and is screwed into the screw hole of the second attachment portion 10c2 (see FIG. 5A) to fix the indication plate 15a to the slide member 10. The angle of the arm member 12 can be adjusted by rotating the arm member 12 around the protrusion 11 with the indicating member 15 as a guide. This makes it possible to adjust the angle of the workpiece bent by the press brake.

  8 to 9 show a state in which the movable member 3 is attached to the fixed member 2. In order to mount the movable member 3 on the fixed member 2, the movable member 3 is disposed above the fixed member 2 as shown in FIG. Next, the movable member 3 is moved downward, the convex portion 10a of the movable member 3 is inserted into the groove portion 7 of the fixed member 2, and the movable member 3 is slid downward. Then, the stopper portion 10b of the movable member 3 comes into contact with the upper end surface of the main body portion 4 of the fixed member 2 as shown in FIG. In other words, the movable member 3 is mounted on the fixed member 2 such that the movable member 3 is placed on the fixed member 2. In this way, the angle adjusting tool 1 is configured.

  The angle adjusting tool 1 having the above configuration is attached to a press machine such as a press brake and is used for confirming the angle at which the workpiece is bent. 10 and 11 are a perspective view and a front view schematically showing the press brake 16 to which the angle adjusting tool 1 is attached. The press brake 16 includes a metal upper mold 17 having a protruding plate 17a protruding in a horizontal or substantially horizontal direction, and a metal lower mold 18. A workpiece W is installed between the upper die 17 and the lower die 18, and a press pedal (not shown) is operated to fix the workpiece W with the workpiece W sandwiched between the upper die 17 and the lower die 18. Next, the handle (not shown) is operated, for example, the lower mold 18 is raised and bent until the workpiece W reaches a target angle.

  FIG. 12 is an explanatory view schematically showing a state in which the angle adjusting tool 1 is attached to the upper die 17 of the press brake 16. In order to attach the angle adjusting tool 1 to the upper mold 17, the protruding plate 17 a is inserted into the sandwiching portion SW of the angle adjusting tool 1 so as to hold the protruding plate 17 a between the upper end of the main body portion 4 and the recess 5 a, and the main body portion 4. The magnet 9 is attached to the metal upper die 17. Then, the angle adjusting tool 1 is fixed to the upper mold 17 by the magnet 9, and the protruding plate 17a is sandwiched between the sandwiching portions SW, so that the fixing member 2 is restricted from moving in the vertical direction. In this way, the angle adjusting tool 1 is attached to the upper mold 17. When the angle adjusting tool 1 is attached to the upper mold 17, the work W is placed on the press brake 16, the bending of the work W is confirmed using the angle adjusting tool 1 by operating the press brake 16, and the target angle is set. The work W is bent so that

  Next, a series of procedures for bending the workpiece W so that the workpiece W bends to a target angle using the angle adjusting tool 1 will be described. As shown in FIG. 12, a workpiece W is prepared below the angle adjustment tool 1 attached to the upper mold 17. Specifically, the fixing member 2, the slide member 10, and the arm member 12 are positioned on the outer side OS in the width direction of the workpiece W, and the workpiece W is below the protrusion 11 protruding from the slide member 10 (just below the bearing member 13). The workpiece W is arranged on the lower mold 18 so that the outer edge portion of the lower die 18 is located. Then, the work pedal is clamped between the upper mold 17 and the lower mold 18 by operating the foot pedal (not shown) of the press brake 16, and the work W is fixed (FIG. 13). Next, a handle (not shown) of the press brake is operated to raise the lower mold 18 and bend the workpiece W. The workpiece W bends in a V shape so as to gradually protrude downward, and the workpiece W contacts the bearing member 13 (FIG. 14). From there, as the workpiece W is further bent, the movable member 3 slides upward as the workpiece W pushes the protruding portion 11 through the bearing member 13. Then, the arm member 12 slides upward while maintaining the posture of the arm member 12 (FIG. 14 → FIG. 15 → FIG. 16). Here, since the workpiece W bent at the target bending angle and the first side 12c1 are parallel to each other, the arm member 12 has a part of the workpiece W as the workpiece W approaches the target bending angle. It is gradually positioned along the arm member 12. Therefore, the first side 12c1 of the arm member 12 is visually compared with the workpiece W, and a target angle is obtained by bending the workpiece W until the workpiece W is bent along the first side 12c1 as shown in FIG. The workpiece W can be bent until 13 to 16, there is a gap between the angle adjustment tool 1 and the upper mold 17 for the sake of convenience of the drawings, but the angle adjustment tool 1 is actually fixed to the upper mold 17 by the magnet 9 (see FIG. 12). The

  As described above, when the workpiece W is bent by the press brake 16, the angle adjusting tool 1 presses the bearing member 13 when the workpiece W is bent. At this time, horizontal and vertical forces are applied to the bearing member 13 from the workpiece W. The movable member 3 slides upward due to the vertical force acting on the bearing member 13, and the bearing member 13 rotates due to the horizontal force acting on the bearing member 13. Therefore, the movable member 3 smoothly slides upward by the bearing member 13. When the movable member 3 slides upward, the arm member 12 slides upward while maintaining the posture of the arm member 12. Since the arm member 12 is parallel to the workpiece W bent at the target bending angle, a part of the workpiece W gradually follows the arm member 12 as the workpiece W approaches the target bending angle. To position. Therefore, even if the angle adjusting tool 1 is attached to the upper mold 17 before the work W is bent, it can be confirmed at any time whether the work W is bent to the target angle. Since the projecting plate 17a (see FIG. 12) of the press brake 16 is sandwiched from above and below by the sandwiching portion SW (see FIG. 3A), the position of the fixing member 2 attached to the upper mold 17 is prevented from being shifted up and down. it can. Further, since the fixing member 2 is fixed to the upper mold 17 by the magnet 9, it is possible to further suppress the displacement of the fixing member 2 from the position. By these, when the movable member 3 stops sliding smoothly, it can suppress effectively that the position of the fixed member 2 shifts to an up-down direction.

  Although the example which attaches the angle adjustment tool 1 to the upper mold | type 17 was demonstrated above, you may attach to the lower mold | type 18. FIG. When the angle adjusting tool 1 is attached to the lower mold 18, the attachment positions of the protrusion 11, the arm member 12, the bearing member 13, the fixing member 14, and the indication member 15 shown in FIG. The indicator member 15 is turned over and the indicator member 15 is attached to the first attachment portion 10c1 (see FIG. 5A), the protrusion 11 is attached to the second attachment portion 10c2 (see FIG. 5A), and the arm member 12 is turned over. It attaches to the protrusion part 11 with the bearing member 13 and the fixing member 14 (FIG. 17). And the fixing member 2 is fixed to the lower mold | type 18 with the magnet 9 (FIG. 18). After that, the movable member 3 slides according to the bending of the workpiece W, as in the case where it is attached to the upper die 17. Therefore, it can be confirmed whether or not the workpiece W is bent to a target angle by the angle adjusting tool 1. Therefore, the angle adjusting tool 1 can be used as both the upper mold 17 and the lower mold 18.

  As shown in FIG. 18, an elliptical through hole H is formed in the movable member 3. A hole 8 formed in the fixing member 2 shown in FIG. 3A is located on the back side of the through hole H in FIG. Therefore, as shown in FIG. 19, the movable member 3 can be fixed to the fixed member 2 by inserting the nut N into the through hole H and screwing the nut N into the hole 8 (see FIG. 18). Therefore, it is also possible to confirm the angle of the workpiece W by attaching the angle adjusting tool 1 to the lower mold 18 after bending the workpiece W as in the conventional case.

  The angle adjusting tool 1 described above is only one embodiment, and various modifications are possible. In the above, the example in which the movable member 3 slides along the groove portion 7 of the fixed member 2 shown in FIG. An angle adjusting tool 101 provided with a guide mechanism for linearly moving the movable member 3 in the vertical direction instead of the groove portion 7 may be used. An angle adjusting tool 101 is shown in FIG. The angle adjusting tool 101 includes a fixed member 102 that is fixed to a press brake or the like, and a movable member 103 that is movable with respect to the fixed member 102. In the following description, the same components as those described above are denoted by the same reference numerals and description thereof is omitted. The fixing member 102 has a main body portion 4, a plate-like member 5, and a screw 6. As shown in FIG. 21, the fixing member 102 includes a housing 104 adjacent to the main body 4, a guide bar 105 extending in the vertical direction, and a fixing member 106 that prevents the guide bar 105 from coming off. Returning to FIG. 20, the movable member 103 includes a slide member 107 that slides with respect to the fixed member 102, a protruding portion 11, an arm member 12, a bearing member 13, a fixed member 14, and an instruction member 15. The slide member 107 includes an accommodating portion 107a accommodated in the housing 104, and a mounting portion 107b to which the protruding portion 11, the arm member 12, the bearing member 13, the fixing member 14, and the indicating member 15 are attached. The accommodating portion 107a has a guide hole portion H1 (FIG. 22) into which the guide rod 105 is inserted, and a stopper S (FIG. 23) protruding from the inner surface of the housing 104. The stopper S is configured as, for example, a plunger having a ball, a hollow screw body with a tip that supports the ball at the tip, and a spring positioned inside the screw body. The screw body is screwed into the accommodating portion 107a so that the ball protrudes from the accommodating portion 107a. When a load is applied to the ball from the outside of the screw body, the ball sinks into the screw body against the bias of the spring, and when the load is released, the ball returns to its original position by the spring. As shown in FIG. 20, the guide rod 105 is inserted into the guide hole H <b> 1 and the fixed member 102 is attached to the movable member 103. Although not shown, when the fixed member 102 is mounted on the movable member 103, the ball of the stopper S (see FIG. 23) is pushed by the housing 104, and the ball resists the bias of the spring, and the inside of the screw body. Is sinking in. Therefore, even if a force for rotating the movable member 103 is applied around the guide rod 105, the stopper S limits the rotation of the movable member 103. When the angle adjusting tool 101 is attached to the press brake 16 and the workpiece W is bent as in the angle adjusting tool 1 described above, the bent workpiece W presses the bearing member 13. At this time, horizontal and vertical forces are applied to the bearing member 13 from the workpiece W. Due to the vertical force acting on the bearing member 13, the movable member 103 slides upward so as to be guided by the guide rod 105. At this time, even if a force for rotating the movable member 103 acts around the guide rod 105, the rotation of the movable member 103 is limited by the stopper S. Therefore, the movable member 103 smoothly slides upward. Therefore, by referring to the arm member 12 in the same manner as described above, it is possible to confirm whether the workpiece W is bent to a target angle. The angle adjusting tool 101 can be manufactured at a lower cost than the angle adjusting tool 1 having the groove 7 by adopting the guide rod 105 instead of forming the sliding groove 7. In the angle adjustment tool 101, the stopper S is provided in order to prevent the movable member 103 from rotating around the guide rod 105. However, a linear bush having a detent function may be used.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the specific description thereof, and the illustrated configurations and the like can be appropriately combined within a technically consistent range. In addition, certain elements and processes may be replaced with known forms.

  As the protruding portion 11 of the angle adjusting tool 1, the cylindrical protruding portion 11 is illustrated as shown in FIG. 6A, but a protruding portion 111 having a bulged center as shown in FIG. 24 may be used. Further, in the angle adjusting tools 1 and 101, the angle adjusting tools 1 and 101 have the fixing members 2 and 102, but the fixing members 2 and 102 may be provided on the press brake. In the above example, the fixing members 2 and 102 are fixed by the sandwiching part SW. However, the fixing members 2 and 102 are provided with a protruding plate that is hooked on the upper mold 17 or the lower mold 18, and the protruding plate is connected to the upper mold 17 or the lower mold 18. The fixing members 2 and 102 may be fixed to the upper mold 17 or the lower mold 18 by being hooked on the mold 18.

DESCRIPTION OF SYMBOLS 1 Angle adjustment tool 2 Fixed member 3 Movable member 4 Main body part 10 Slide member 10c Attachment part 10c1 1st attachment part 10c2 2nd attachment part 11 Protrusion part 12 Arm member 13 Bearing member (bearing) 14 Fixed member 15 Instruction member W Work SW Nipping part

Claims (5)

An angle adjusting tool for confirming a bending angle of a work that is sandwiched between an upper mold and a lower mold and bent to be convex downward,
A fixing member that is fixed to the upper mold or the lower mold and is positioned outside in the width direction of the workpiece sandwiched between the upper mold and the lower mold;
A slide member that is slidable in the vertical direction with respect to the fixed member, and is located outside the width direction;
A projecting portion projecting upward from the slide member from the slide member;
At least partly parallel to the workpiece bent at a target bending angle by the upper mold and the lower mold, located on the outer side in the width direction, connected rotatably about the axis with the protrusion as an axis An arm member
With
As the workpiece is bent so as to protrude downward between the upper die and the lower die, the workpiece pushes the protrusion and the slide member slides upward, so that the posture of the arm member is maintained. The angle adjustment tool that allows the arm member to slide upward and to compare the arm member with the work, thereby checking whether the work is bent to the target bending angle. The protrusion includes a bearing rotatable around the axis,
The angle adjustment tool according to claim 1, wherein the bearing is pushed by the workpiece and the slide member slides upward. The upper mold or the lower mold includes a protruding plate that protrudes in a horizontal or substantially horizontal direction from the upper mold or the lower mold,
The angle adjusting tool according to claim 1, wherein the fixing member includes a sandwiching portion that sandwiches the protruding plate from above and below. The upper mold or the lower mold is made of metal,
The angle adjusting tool according to claim 3, wherein the fixing member includes a magnet fixed to the upper mold or the lower mold. The protrusion is a shaft member that can be attached to the slide member,
The slide member is located on the lower end side of the slide member and can be attached to the shaft member. The second attachment portion is located on the upper end side of the slide member and can be attached to the shaft member. With
When fixing the fixing member to the upper mold, the shaft member is attached to the first attachment portion,
The angle adjusting tool according to any one of claims 1 to 4, wherein when the fixing member is fixed to the lower mold, the shaft member is attached to a second attachment portion.

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