Elastic sheet bending tool

Abstract

The utility model discloses an elastic piece bending tool, and belongs to the technical field of forming tools. The tool comprises a male die and a female die, a positioning piece and a bending piece are arranged on the male die, the central axis of the bending piece is perpendicular to the central axis of the positioning piece, a forming groove is formed in the bottom of the female die, a positioning face B on the female die keeps in contact with a positioning face A on the male die, the female die is connected with the positioning piece in a sliding mode, and the forming groove is formed in the bottom of the female die. And the central axis of the positioning piece is parallel to the positioning surface A. The two ends of the elastic piece blank are positioned through the positioning pieces, so that the elastic piece blank can be effectively clamped and positioned; the female die, the bending piece and the male die are matched with one another to bend the middle of an elastic piece blank, the bending strength can be conveniently controlled, bending work of the middle of the elastic piece blank can be completed without relying on experience of workers, the bending effect consistency is good, the machining efficiency and machining quality stability of the elastic piece are improved, and the production cost is reduced. And a series of surface quality problems caused by knocking and correcting the bending shape of the elastic sheet by using pliers and the like are avoided.

Description

Technical Field

[0001] The utility model relates to a shrapnel bending tooling, belonging to the technical field of forming tooling. Background Art

[0002] The material of the shrapnel is H62-O60, and the thickness is 0.5mm. Its shape is as Figure 1 and Figure 2 shown. After blanking and drilling both ends of the blank, it is necessary to bend the middle part of the blank into arc shape and R2 arc shape. The currently commonly used processing method is that when bending, the worker uses a vise to clamp a cylindrical pin with a diameter of and then bends the blank with drilled holes at both ends around the cylindrical pin to obtain arc shape. Then, according to experience, the worker uses pliers to slowly trim the size R2 of the bending part of the blank.

[0003] However, in the process of processing arc shape and R2 arc shape, the blank is not effectively clamped and positioned, and it is not easy to control the bending force. Moreover, the bending process overly relies on the experience of the worker, resulting in inconsistent bending effects, low processing efficiency, unstable processing quality, and easy deformation and damage of the shrapnel. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a shrapnel bending tooling.

[0005] The utility model is realized through the following technical solutions:

[0006] A shrapnel bending tooling includes a male mold and a female mold. A positioning member and a bending member are provided on the male mold, and the central axis of the bending member is perpendicular to the central axis of the positioning member. A forming groove is opened at the bottom of the female mold. The positioning surface B on the female mold is in contact with the positioning surface A on the male mold. The female mold is slidably connected with the positioning member, and the central axis of the positioning member is parallel to the positioning surface A.

[0007] The male mold is L-shaped, and a countersunk hole is provided at the bottom of the male mold along the vertical direction.

[0008] The surface on the inner side of the male mold parallel to the central axis of the countersunk hole is selected as the positioning surface A.

[0009] An installation hole is provided on the male mold along the horizontal direction.

[0010] The lower end surface of the positioning member is coplanar with the lower end surface of the countersunk hole. The positioning member is a stepped positioning pin and is in clearance fit, transition fit or interference fit with the countersunk hole.

[0011] The bent part is a bent pin, one end of which is inserted into the mounting hole and is in transitional fit or interference fit with the mounting hole.

[0012] The forming groove includes a vertical section A, an arc section A, an arc section B and a vertical section B. One arc end of the arc section A is connected to one end of the vertical section A. The arc section B is externally tangent to the arc section A, and one arc end of the arc section B is connected to the arc end of the arc section A far from the vertical section A. The vertical section B is parallel to the vertical section A, and one end of the vertical section B is connected to the arc end of the arc section B far from the arc section A through a horizontal section.

[0013] The beneficial effects of the present utility model are as follows: The two ends of the elastic sheet blank are positioned by the positioning member, and the middle part of the elastic sheet is limited by the bent part, so that the elastic sheet blank is effectively clamped and positioned; The female die, the bent part and the male die cooperate with each other to bend the middle part of the elastic sheet blank, which is convenient to control the bending force, and the bending work of the middle part of the elastic sheet blank can be completed without relying on the experience of workers. The bending effect has good consistency, improves the processing efficiency and the stability of the processing quality of the elastic sheet, and avoids a series of surface quality problems caused by using pliers or the like to knock and correct the bending of the elastic sheet. Description of the Drawings

[0014] Figure 1 It is a front view structural schematic diagram of the elastic sheet of the present utility model;

[0015] Figure 2 is Figure 1 the top view of

[0016] Figure 3 It is a structural schematic diagram of the present utility model;

[0017] Figure 4 It is a top view structural schematic diagram of the male die of the present utility model;

[0018] Figure 5 is Figure 4 a sectional view taken along A-A;

[0019] Figure 6 is Figure 5 the right view of

[0020] Figure 7 It is a front view structural schematic diagram of the female die of the present utility model;

[0021] Figure 8 is Figure 7 a sectional view taken along B-B;

[0022] Figure 9 It is a structural schematic diagram of the bent part of the present utility model;

[0023] Figure 10 It is a structural schematic diagram of the positioning member of the present utility model.

[0024] In the figure: 1 - positioning part, 2 - male mold, 20 - positioning surface A, 21 - counterbore, 22 - mounting hole, 3 - bent part, 4 - female mold, 40 - positioning hole, 41 - forming groove, 410 - vertical section A, 411 - arc section A, 412 - arc section B, 413 - horizontal section, 414 - vertical section B, 42 - positioning surface B, 5 - elastic piece, 50 - through hole. Specific implementation manner

[0025] The technical solution of the present utility model will be further described below, but the scope of protection claimed is not limited thereto.

[0026] As Figures 1 to 10 shown, a kind of elastic piece bending tooling of the present utility model includes a male mold 2 and a female mold 4. A positioning part 1 and a bent part 3 are arranged on the male mold 2, and the central axis of the bent part 3 is perpendicular to the central axis of the positioning part 1. A forming groove 41 is opened at the bottom of the female mold 4. The positioning surface B 42 on the female mold 4 is in contact with the positioning surface A 20 on the male mold 2. The female mold 4 is slidably connected with the positioning part 1, and the central axis of the positioning part 1 is parallel to the positioning surface A 20. As Figure 3 shown, the positioning surface B 42 on the female mold 4 is in contact with the positioning surface A 20 on the male mold 2, and the female mold 4 is slidably connected with the positioning part 1 on the male mold 2 to position the female mold 4 in the circumferential, length and width directions, so that it can only move up and down relative to the male mold 2 in the vertical direction. After blanking is completed and through holes 50 are drilled at both ends of the blank, the through hole 50 at one end of the elastic piece 5 blank is sleeved on the positioning part 1, then the middle part of the elastic piece 5 blank is bypassed around the bent part 3, and the through hole 50 at the other end of the elastic piece 5 blank is also sleeved on the positioning part 1, then the positioning work of the elastic piece 5 blank can be completed to prevent the elastic piece 5 blank from shifting. Then, the tooling with the elastic piece 5 blank is placed in a vise, and pressure is applied through the vise to make the female mold 4 move along the positioning part 1 towards the direction close to the male mold 2. The female mold 4 bends the middle part of the elastic piece 5 blank through the forming groove 41 at its bottom to form an arc shape and an R2 arc shape. After the female mold 4 is pressed and fitted with the male mold 2, it is kept in the pressed state for 30 s, then the bending process of the elastic piece 5 can be completed. The two ends of the elastic piece 5 blank are positioned by the positioning part 1, and the middle part of the elastic piece 5 is limited by the bent part 3, so that the elastic piece 5 blank is effectively clamped and positioned; the female mold 4, the bent part 3 and the male mold 2 cooperate with each other to bend the middle part of the elastic piece 5 blank, which is convenient for controlling the bending force, and the bending work of the middle part of the elastic piece 5 blank can be completed without relying on the experience of workers. The bending effect has good consistency, improves the processing efficiency and the stability of the processing quality of the elastic piece 5, and avoids a series of surface quality problems caused by using pliers, etc. to knock and correct the bending of the elastic piece 5.

[0027] Specifically, positioning holes 40 are machined on the female mold 4 at positions corresponding to the positioning members 1. The positioning holes 40 are in clearance fit with the positioning members 1. When the positioning members 1 are inserted into the positioning holes 40, a sliding connection between the female mold 4 and the positioning members 1 is achieved.

[0028] The male mold 2 is L-shaped, and a counterbore 21 is provided at the bottom of the male mold 2 in the vertical direction. The male mold 2 serves to carry the elastic sheet 5 and assemble the positioning pins and bending pins.

[0029] The surface of the male mold 2 inside and parallel to the central axis of the counterbore 21 is selected as the positioning surface A20.

[0030] Mounting holes 22 are provided on the male mold 2 in the horizontal direction.

[0031] The lower end surface of the positioning member 1 is coplanar with the lower end surface of the counterbore 21. The positioning member 1 is a stepped positioning pin and is in clearance fit, transition fit, or interference fit with the counterbore 21. The positioning pin serves to position and prevent the blank of the elastic sheet 5 from moving.

[0032] The bending member 3 is a bending pin, one end of which is inserted into the mounting hole 22 and is in transition fit or interference fit with the mounting hole 22. The bending pin serves to perform the bending function.

[0033] The forming groove 41 includes a vertical section A410, an arc section A411, an arc section B412, and a vertical section B414. One arc end of the arc section A411 is connected to one end of the vertical section A410. The arc section B412 is externally tangent to the arc section A411, and one arc end of the arc section B412 is connected to the arc end of the arc section A411 far from the vertical section A410. The vertical section B414 is parallel to the vertical section A410, and one end of the vertical section B414 is connected to the arc end of the arc section B412 far from the arc section A411 through a horizontal section 413. The female mold 4 serves to transmit pressure and bend the blank of the elastic sheet 5.

Claims

1. A spring-shaped curved tool, characterized in that: The invention comprises a male mold (2) and a female mold (4), wherein the male mold (2) is provided with a positioning piece (1) and a curved piece (3), and the central axis of the curved piece (3) is perpendicular to the central axis of the positioning piece (1), and the bottom of the female mold (4) is provided with a forming groove (41), and a positioning surface B (42) on the female mold (4) is in contact with a positioning surface A (20) on the male mold (2), and the female mold (4) is slidably connected to the positioning piece (1), and the central axis of the positioning piece (1) is parallel to the positioning surface A (20).

2. The spring-shaped bending tool as claimed in claim 1, characterized in that: The male mold (2) is L-shaped, and a countersunk hole (21) is provided at the bottom of the male mold (2) along the vertical direction.

3. The spring-piece curved tooling according to claim 2, characterized in that: The inner surface of the male mold (2) parallel to the central axis of the countersunk hole (21) is selected as the positioning surface A (20).

4. The spring-piece bending tool as claimed in claim 1, characterized in that: The male mold (2) is provided with a mounting hole (22) in the horizontal direction.

5. The spring-piece curved tooling according to claim 2, characterized in that: The lower end surface of the positioning member (1) is coplanar with the lower end surface of the countersunk hole (21); the positioning member (1) is a stepped positioning pin and has a clearance fit, a transition fit, or an interference fit with the countersunk hole (21).

6. The spring-piece curved tooling according to claim 4, characterized in that: The bent piece (3) is a bent pin, one end of which is inserted into the mounting hole (22) and has a transition fit or an interference fit with the mounting hole (22).

7. The spring-piece bending tool as claimed in claim 1, characterized in that: The forming groove (41) comprises a vertical section A (410), an arc section A (411), an arc section B (412) and a vertical section B (414); an arc end of the arc section A (411) is connected to an end of the vertical section A (410); the arc section B (412) is circumscribed to the arc section A (411); an arc end of the arc section B (412) is connected to an arc end of the arc section A (411) away from the vertical section A (410); the vertical section B (414) is parallel to the vertical section A (410); and an end of the vertical section B (414) is connected to an arc end of the arc section B (412) away from the arc section A (411) through a horizontal section (413).

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