Integrated die for punching and extruding spherical bolt hole of steel wheel

Abstract

The utility model relates to a punching die, in particular to an integrated die for punching and extruding a spherical bolt hole of a steel wheel, which comprises an upper die and a lower die, the upper die is provided with a convex plate matched with a concave part of a spoke, and the upper die is connected with a positioning shaft opposite to a central hole of the spoke. The lower die is provided with a first lower base plate attached to the plane of the spoke, and the upper die and the lower die are in relative sliding connection and can slide up and down to be attached to each other or separated from each other; the upper die is connected with a punch, and the lower die is connected with a female die corresponding to the punch. According to the integrated die for punching and extruding the spherical bolt hole of the steel wheel, the machining efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to a punching die, in particular to an integrated die for punching and extruding spherical bolt holes on steel wheels. Background Art

[0002] Figure 1 A spoke structure commonly seen on automobiles is shown, which is characterized by a plane in the middle with a center hole and mounting holes on the plane. A common mold for machining mounting holes is shown in a Chinese utility model patent with publication number CN205732512U and the name of a wheel spoke hole mold. It can be seen in the patent that when machining the mounting holes, the workpiece is first mounted on the lower mold, and then the positioning block is fixed to the lower mold by bolts or screws. Based on this, it can be seen that too much time is consumed in the process of mounting the workpiece on the lower mold, which affects the machining efficiency.

[0003] Therefore, it is necessary to improve the mold to improve processing efficiency. Utility Model Content

[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a steel wheel punch to improve processing efficiency.

[0005] Technical solution: To achieve the above purpose, the utility model discloses a steel wheel punching and extruding spherical bolt hole integrated die, comprising:

[0006] An upper die, wherein the upper die is provided with a convex plate matching the concave portion of the spoke, and the upper die is connected with a positioning shaft opposite to the central hole of the spoke;

[0007] A lower die, wherein the lower die is provided with a first lower pad that fits the spoke plane;

[0008] The upper die is connected to the lower die in a relative sliding manner, and the upper die and the lower die can slide up and down to fit each other or separate from each other; the upper die is connected to a punch, and the lower die is connected to a concave die corresponding to the punch.

[0009] Furthermore, the upper mold is also connected to a first upper pad, a second upper pad and a third upper pad, the upper surface of the protrusion plate is connected to the lower surface of the first upper pad, the first upper pad is arranged around the second upper pad and the third upper pad, the lower surface of the second upper pad and the upper surface of the third upper pad are fitted and connected to each other, the punch passes through the third upper pad and is connected to the second upper pad, and the positioning shaft is slidably connected to the third upper pad and connected to the second upper pad.

[0010] Furthermore, the upper mold is also connected to a spring and a push pin, and the push pin is arranged above the spoke, and one end of the push pin is connected to the spring.

[0011] Furthermore, the lower die is also connected to a second lower pad and a third lower pad, the second lower pad and the third lower pad are stacked in sequence and fixedly connected under the first lower pad, and the concave die is connected to the second lower pad and the third lower pad.

[0012] Furthermore, the first lower pad is also provided with a hole groove corresponding to the positioning axis.

[0013] Furthermore, the punch is at least provided with a cylindrical portion and a ball head portion, and the ball head portion is arranged above the cylindrical portion.

[0014] The utility model has the following beneficial effects:

[0015] (1) A convex plate matching the concave part of the spoke is added to the upper die of the mold. The concave part of the spoke is in an inverted cone shape and cooperates with the convex plate. When the upper die and the lower die are close to each other, the convex plate and the concave part of the spoke cooperate to play a guiding role. Finally, the workpiece is completely positioned through the positioning axis, thereby improving the processing efficiency and ensuring the punching effect.

[0016] (2) Springs and ejector pins are added to the upper die of the mold. After processing is completed, the spokes can be quickly separated from the upper die under the action of the springs and ejector pins, thereby improving processing efficiency.

[0017] (3) Adding a cylindrical portion and a spherical head portion to the punch can chamfer the hole end while punching, further improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the punch and the die;

[0020] Figure 3 This is a schematic diagram of the spoke structure.

[0021] In the figure, 1, upper die; 2, recess; 3, spoke; 4, convex plate; 5, center hole; 6, positioning shaft; 7, lower die; 8, first lower pad; 9, punch; 10, die; 11, first upper pad; 12, second upper pad; 13, third upper pad; 14, spring; 15, ejector pin; 16, second lower pad; 17, third lower pad; 18, hole groove; 19, cylindrical part; 20, ball head; 21, mounting hole. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 To Attachment Figure 3 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0023] Attached Figure 3 Disclosed is the wheel spoke 3 processed by the device, specifically the mounting hole 21 on the wheel spoke 3 .

[0024] An integrated die for punching and extruding spherical bolt holes on a steel wheel comprises an upper die 1 and a lower die 7. Both the upper die 1 and the lower die 7 are assembly structures composed of multiple parts. The upper die 1 and the lower die 7 are relatively slidably connected, and the upper die 1 and the lower die 7 can slide up and down to fit each other or separate from each other. When the upper die 1 and the lower die 7 fit each other, the processing of the mounting hole 21 on the spoke 3 is completed; when the upper die 1 and the lower die 7 are separated from each other, the processed spoke 3 can be removed and the unprocessed spoke 3 can be added.

[0025] The upper die 1 includes a convex plate 4, a first upper pad 11, a second upper pad 12, a third upper pad 13, a positioning shaft 6, a punch 9, a spring 14 and a push pin 15. The convex plate 4 matches the concave portion 2 of the spoke 3, the first upper pad 11 is annular, and the first upper pad 11 is arranged around the second upper pad 12 and the third upper pad 13, and the upper surface of the convex plate 4 is connected to the lower surface of the first upper pad 11. The lower surface of the second upper pad 12 and the upper surface of the third upper pad 13 are fitted and connected to each other. The positioning shaft 6 is axially opposite to the center hole 5 of the spoke 3, and the positioning shaft 6 is slidably connected to the third upper pad 13 and connected to the second upper pad 12 by bolts, based on which the length of the positioning shaft 6 extending out of the convex plate 4 can be adjusted. The punch 9 passes through the third upper pad 13 and is connected to the second upper pad 12. The axial direction of the punch 9 is parallel to the axial direction of the positioning shaft 6. A cylindrical portion 19 and a ball head portion 20 are provided at the end of the punch 9. The ball head portion 20 is provided above the cylindrical portion 19. Therefore, the mounting hole 21 and the chamfer of the end of the mounting hole 21 can be processed simultaneously during punching. The ejector pin 15 is provided above the spoke 3, and one end thereof is connected to the spring 14. When the upper die 1 and the lower die 7 are separated from each other, the ejector pin 15 can separate the spoke 3 from the upper die 1 under the action of the spring 14, thereby improving the processing efficiency.

[0026] The lower die 7 includes a first lower pad 8, a second lower pad 16, a third lower pad 17 and a die 10. The first pad 8 is in contact with the plane of the spoke 3 and is provided with a hole 18 matching the positioning shaft 6. The second lower pad 16 and the third lower pad 17 are sequentially arranged below the first lower pad 8, and the die 10 is axially opposite to the punch 9. The die 10 is connected to the second lower pad 16 and the third lower pad 17. The punch 9 and the die 10 are both replaceable structures, so that the entire structure is suitable for processing different hole diameters.

[0027] The device can realize automatic positioning through the cooperation between the protruding plate 4 and the concave portion 2 of the spoke 3 and the cooperation between the positioning shaft 6 and the center hole 5, without the need for manual installation of positioning blocks as in the prior art.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated die for punching and extruding spherical bolt holes on steel wheels, characterized in that: include: An upper mold (1), the upper mold (1) being provided with a convex plate (4) matching the concave portion (2) of the spoke (3), and the upper mold (1) being connected with a positioning shaft (6) opposite to the central hole (5) of the spoke (3); A lower mold (7), wherein the lower mold (7) is provided with a first lower pad (8) which is in plane contact with the spoke (3); The upper die (1) and the lower die (7) are connected in a relatively sliding manner, and the upper die (1) and the lower die (7) can slide up and down until they are in contact with each other or separated from each other; the upper die (1) is connected to a punch (9), and the lower die (7) is connected to a concave die (10) corresponding to the punch (9).

2. The integrated die for punching and extruding spherical bolt holes on steel wheels according to claim 1, characterized in that: The upper mold (1) is also connected to a first upper pad (11), a second upper pad (12) and a third upper pad (13); the upper surface of the protruding plate (4) is connected to the lower surface of the first upper pad (11); the first upper pad (11) is arranged around the second upper pad (12) and the third upper pad (13); the lower surface of the second upper pad (12) and the upper surface of the third upper pad (13) are fitted and connected to each other; the punch (9) passes through the third upper pad (13) and is connected to the second upper pad (12); the positioning shaft (6) is slidably connected to the third upper pad (13) and is connected to the second upper pad (12).

3. The integrated die for punching and extruding spherical bolt holes on steel wheels according to claim 2, characterized in that: The upper mold (1) is also connected to a spring (14) and a push pin (15); the push pin (15) is arranged above the spoke (3), and one end of the push pin is connected to the spring (14).

4. The integrated die for punching and extruding spherical bolt holes on steel wheels according to claim 1, characterized in that: The lower mold (7) is also connected to a second lower pad (16) and a third lower pad (17); the second lower pad (16) and the third lower pad (17) are stacked in sequence and fixedly connected below the first lower pad (8); and the concave mold (10) is connected to the second lower pad (16) and the third lower pad (17).

5. The integrated die for punching and extruding spherical bolt holes of steel wheels according to claim 1, characterized in that: The first lower pad (8) is also provided with a hole groove (18) corresponding to the positioning shaft (6).

6. The integrated die for punching and extruding spherical bolt holes of steel wheels according to claim 1, characterized in that: The punch (9) is provided with at least a cylindrical portion (19) and a ball head portion (20), and the ball head portion (20) is arranged above the cylindrical portion (19).

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