Special-shaped semi-finished product image upsetting punch

Abstract

The utility model discloses a special-shaped semi-finished product image upsetting punch, which relates to the technical field of punches, and comprises a punch rod, an outer ring sleeve is arranged outside the punch rod, the bottom end of the punch rod is fixedly connected with a punch body, an inner cavity is arranged inside the wall body of the outer ring sleeve, and the outer ring sleeve is fixedly connected with the punch body. The inner wall of the outer ring sleeve is fixedly connected with an air bag ring used for positioning the image mandrel, the air bag ring is located at the bottom of the outer ring sleeve, the inner wall of the outer ring sleeve is provided with a first round hole, the air bag ring is communicated with the inner cavity through the first round hole, and the outer wall of the outer ring sleeve is provided with a second round hole used for inflating the inner cavity in a penetrating mode. According to the special-shaped semi-finished product image upsetting punch, the outer ring sleeve, the air bag ring, the supporting plate and other structures are arranged, due to the fact that the outer ring sleeve is positioned on the image mandrel and matched with the supporting plate, the stability of the punch rod can be improved, then the punching precision is improved, meanwhile, chippings are prevented from splashing, and noise generated by punching is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of punches, in particular to an upsetting punch for a special-shaped semi-finished product. Background Art

[0002] Shaft forgings are common parts in mechanical manufacturing and are widely used in the automotive, aviation, machine tool and other industries. As a transmission device in machinery, it usually needs to withstand large loads and instantaneous impact forces. In order to increase the surface hardness and strength of shaft forgings and prevent fatigue fractures, cracks and other problems during use, they usually need to be surface treated. One of the commonly used surface treatment methods is upsetting.

[0003] After the upsetting process, the image mandrel needs to be punched at its end. Since the outer circumference of the image mandrel is irregular, it is only fixed by a clamp, and there is still a problem of shaking, which affects the accuracy of punching.

[0004] Therefore, it is necessary to propose a special-shaped semi-finished product image upsetting punch to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a special-shaped semi-finished product upsetting punch to solve the problem that a hole needs to be punched at the end of the image mandrel after the upsetting process. Since the outer peripheral surface of the image mandrel is irregular, it is only fixed by a clamp and there is still a shaking problem, which affects the accuracy of the punching.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a kind of upsetting punch for a special-shaped semi-finished product, comprising a punch rod, an outer ring sleeve is arranged on the outside of the punch rod, the bottom end of the punch rod is fixedly connected to the punch body, an inner cavity is opened inside the wall of the outer ring sleeve, an airbag ring for positioning the image core shaft is fixedly connected to the inner wall of the outer ring sleeve, the airbag ring is located at the bottom of the outer ring sleeve, a first circular hole is opened on the inner wall of the outer ring sleeve, the airbag ring is connected with the inner cavity through the first circular hole, a second circular hole for inflating the inner cavity is opened through the outer wall of the outer ring sleeve, and the second circular hole is located in the upper half of the outer ring sleeve.

[0007] Preferably, a support plate is fixedly connected to the top of the outer ring sleeve, a circular groove is formed on the support plate, and the punch rod is slidably connected inside the circular groove.

[0008] Preferably, a cylinder is fixedly connected to the interior of the second circular hole, the cylinder is communicated with the inner cavity, and an adjustment component is provided on the cylinder.

[0009] Preferably, the adjusting assembly comprises a piston block, a round block and a threaded rod, the piston block is slidably connected to the inside of the cylinder, the threaded rod is threadedly connected to the end of the cylinder away from the outer ring sleeve, the round block is located inside the cylinder, one end of the round block is fixedly connected to the threaded rod, and the other end of the round block is rotatably connected to the piston block.

[0010] Preferably, the adjustment assembly further comprises a rotating block, and the rotating block is fixedly connected to an end of the threaded rod away from the round block.

[0011] Preferably, a positioning assembly for fixing the position of the threaded rod is provided on the top of the cylinder, and the positioning assembly comprises a threaded hole and a bolt, the threaded hole is opened on the wall of the cylinder, and the bolt is threadedly connected to the inside of the threaded hole.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model provides structures such as an outer ring sleeve, an airbag ring and a support plate. Since the outer ring sleeve is positioned on the image core shaft and cooperates with the support plate, the stability of the punch rod can be improved, thereby improving the accuracy of punching, while preventing debris from splashing and reducing the noise generated by punching;

[0014] 2. By adjusting the expansion size of the airbag ring, it can meet the needs of different types of image mandrels. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the upsetting punch for the special-shaped semi-finished product of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the punch rod, outer ring sleeve and punch body of the utility model.

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0018] Figure 4 For this utility model Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0019] In the figure: 1. punch rod; 2. outer ring sleeve; 3. punch body; 4. inner cavity; 5. airbag ring; 6. first circular hole; 7. second circular hole; 8. cylinder; 9. piston block; 10. round block; 11. threaded rod; 12. rotating block; 13. threaded hole; 14. bolt; 15. support plate; 16. image core shaft. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clarify the technical solutions in the embodiments of the utility model; it is completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides Figure 1 to Figure 4 A special-shaped semi-finished upsetting punch is shown, including a punch rod 1, an outer ring sleeve 2 is arranged on the outside of the punch rod 1, and a punch body 3 is fixedly connected to the bottom end of the punch rod 1. A support plate 15 is fixedly connected to the top of the outer ring sleeve 2, and a circular groove is opened on the support plate 15. The punch rod 1 is slidably connected to the inside of the circular groove, and the punch rod 1 can also rotate in the circular groove. Considering that the image core shaft 16 needs to be punched at its end after the upsetting process is completed, during the punching process, the outer ring sleeve 2 surrounds the outside of the punch rod 1 and the punch body 3 to prevent debris from splashing and reduce the noise generated by punching. When used specifically, the punch rod 1 is fixedly installed on the punching device, and the punching device includes a motor, a chuck and other structures for driving the punch rod 1 and the punch body 3 to rotate.

[0022] Taking into account the irregular outer circumference of the image core shaft 16, there is still a problem of shaking if it is only fixed by a clamp, which affects the accuracy of punching. An inner cavity 4 is opened inside the wall of the outer ring sleeve 2, and an airbag ring 5 for positioning the image core shaft 16 is fixedly connected to the inner wall of the outer ring sleeve 2. The airbag ring 5 is located at the bottom of the outer ring sleeve 2. The outer ring sleeve 2 is positioned on the image core shaft 16 by expanding the airbag ring 5, thereby improving the stability of punching of the punch body 3; and by adjusting the expansion size of the airbag ring 5, different types of image core shafts 16 can be satisfied.

[0023] In order to inflate the interior of the airbag ring 5, a first circular hole 6 is opened on the inner wall of the outer ring sleeve 2, and the airbag ring 5 is connected to the inner cavity 4 through the first circular hole 6. A second circular hole 7 for inflating the inner cavity 4 is opened on the outer wall of the outer ring sleeve 2, and the second circular hole 7 is located in the upper half of the outer ring sleeve 2.

[0024] The second circular hole 7 is fixedly connected with a cylinder 8, which is in communication with the inner cavity 4. The cylinder 8 is provided with an adjustment assembly, which includes a piston block 9, a round block 10 and a threaded rod 11. The piston block 9 is slidably connected to the inside of the cylinder 8, the threaded rod 11 is threadedly connected to one end of the cylinder 8 away from the outer ring sleeve 2, the round block 10 is located inside the cylinder 8, one end of the round block 10 is fixedly connected to the threaded rod 11, and the other end of the round block 10 is rotatably connected to the piston block 9.

[0025] The adjustment assembly further comprises a rotating block 12 , which is fixedly connected to an end of the threaded rod 11 away from the round block 10 .

[0026] During operation, the image mandrel 16 is fixed on the operating table by a clamp, and the punch rod 1 and the outer ring sleeve 2 move from top to bottom, and the outer ring sleeve 2 surrounds the outer side of the top of the image mandrel 16. The threaded rod 11 is rotated by the rotating block 12, and the threaded rod 11 drives the piston block 9 to move toward the punch rod 1 through the round block 10, so that the gas inside the cylinder 8 enters the inside of the airbag ring 5 from the inner cavity 4 and the first circular hole 6, and the airbag ring 5 expands and becomes larger, and adaptively abuts against the outside of the image mandrel 16. The outer ring sleeve 2 is positioned on the image mandrel 16 by the expansion of the airbag ring 5. The punching device drives the punch body 3 to move downward and abut against the top of the image mandrel 16 through the punch rod 1, and then performs rotation punching;

[0027] Since the outer ring sleeve 2 is positioned on the image core shaft 16 and cooperates with the support plate 15, the stability of the punch rod 1 can be improved, thereby improving the accuracy of punching.

[0028] After use, the rotating block 12 is rotated in the reverse direction to shrink the airbag ring 5, making it easier to remove the outer ring sleeve 2.

[0029] In order to prevent the threaded rod 11 from rotating at will and affecting the expansion state of the airbag ring 5, a positioning assembly for fixing the position of the threaded rod 11 is provided on the top of the cylinder 8. The positioning assembly includes a threaded hole 13 and a bolt 14. The threaded hole 13 is opened on the wall of the cylinder 8, and the bolt 14 is threadedly connected inside the threaded hole 13. When the threaded rod 11 needs to be rotated, the bolt 14 is rotated to separate its end from the threaded rod 11; and after the threaded rod 11 is rotated, the bolt 14 is rotated anyway, and its end abuts against the threaded rod 11 to prevent the threaded rod 11 from rotating at will.

Claims

1. A punch for upsetting a shaped semi-finished product, comprising a punch rod (1), characterized in that: An outer ring sleeve (2) is arranged on the outside of the punch rod (1), a punch body (3) is fixedly connected to the bottom end of the punch rod (1), an inner cavity (4) is provided inside the wall of the outer ring sleeve (2), an airbag ring (5) for positioning the image core shaft (16) is fixedly connected to the inner wall of the outer ring sleeve (2), the airbag ring (5) is located at the bottom of the outer ring sleeve (2), a first circular hole (6) is provided on the inner wall of the outer ring sleeve (2), the airbag ring (5) is connected with the inner cavity (4) through the first circular hole (6), a second circular hole (7) for inflating the inner cavity (4) is provided through the outer wall of the outer ring sleeve (2), and the second circular hole (7) is located in the upper half of the outer ring sleeve (2).

2. The upsetting punch for a special-shaped semi-finished product according to claim 1, characterized in that: A support plate (15) is fixedly connected to the top of the outer ring sleeve (2), a circular groove is provided on the support plate (15), and the punch rod (1) is slidably connected inside the circular groove.

3. The upsetting punch for a special-shaped semi-finished product according to claim 1, characterized in that: A cylinder (8) is fixedly connected to the interior of the second circular hole (7); the cylinder (8) is in communication with the inner cavity (4); and an adjustment component is provided on the cylinder (8).

4. The upsetting punch for a special-shaped semi-finished product according to claim 3, characterized in that: The adjusting assembly comprises a piston block (9), a round block (10) and a threaded rod (11); the piston block (9) is slidably connected to the inside of the cylinder (8); the threaded rod (11) is threadedly connected to one end of the cylinder (8) away from the outer ring sleeve (2); the round block (10) is located inside the cylinder (8); one end of the round block (10) is fixedly connected to the threaded rod (11); and the other end of the round block (10) is rotatably connected to the piston block (9).

5. The upsetting punch for a special-shaped semi-finished product according to claim 4, characterized in that: The adjustment assembly further comprises a rotating block (12), wherein the rotating block (12) is fixedly connected to an end of the threaded rod (11) away from the round block (10).

6. The upsetting punch for a special-shaped semi-finished product according to claim 5, characterized in that: A positioning assembly for fixing the position of the threaded rod (11) is arranged at the top of the cylinder (8), and the positioning assembly comprises a threaded hole (13) and a bolt (14). The threaded hole (13) is opened on the wall of the cylinder (8), and the bolt (14) is threadedly connected to the inside of the threaded hole (13).

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