Anti-deformation spinning die for aluminum alloy hub

Abstract

The utility model discloses an aluminum alloy hub anti-deformation spinning die which comprises an upper die and a lower die, the upper die is located over the lower die, a lower circular groove extending downwards is formed in the middle of the top face of the lower die, a lower ejector is inserted in the lower circular groove in a sleeved mode, the bottom face of the lower ejector abuts against the bottom face of the lower circular groove in a pressed mode, and the lower circular groove is formed in the middle of the top face of the lower die. A central through hole vertically extending downwards is formed in the middle of the bottom surface of the lower circular groove, the central through hole is a stepped through hole, the upper part of the central through hole is a small-diameter hole section, and the lower part of the central through hole is a large-diameter hole section; the top face of the pressure-bearing block can be pressed against the bottom end face of the hub part of the hub for spinning through the adjusting spring, and the height position of the pressure-bearing block can be adjusted through the adjusting spring, so that the hub spinning device can meet hub spinning manufacturing of hub parts with different axial lengths, and it is guaranteed that spinning forming meets the design requirement.

Description

Technical field:

[0001] The utility model relates to the technical field of wheel hub processing equipment, and more specifically to an anti-deformation spinning die for an aluminum alloy wheel hub. Background technology:

[0002] The application of spinning technology is becoming more and more extensive. However, the height of the bottom end surface of the hub is different in different batches of wheel hub blanks. The height of the bottom end surface of the hub may vary from 2mm to 5mm in different batches, that is, the depth of downward extension will vary. When the wheel hub is spun, the blank is pressed up and down, and a support portion is provided in the middle of the lower die. The top surface of the support portion is pressed against the bottom end surface of the hub. When the bottom end surface of the hub of the wheel hub blank extends too long downward, it presses against the top surface of the support portion, which will cause the entire wheel hub to rise a certain distance upward, and the bottom surface of the spoke cannot reach the top surface of the lower die, making it impossible for the upper die and the lower die to fully fit the hub and spokes of the wheel hub for pressing, and the pressing effect is not ideal. Spinning under such circumstances will affect the spinning effect, so that the size of the spun wheel hub cannot meet the design requirements, resulting in scrapped wheel hub. Utility model content:

[0003] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an anti-deformation spinning mold for an aluminum alloy wheel hub. It can realize the top surface of the pressure block pressing against the bottom end surface of the hub part of the wheel hub for spinning by adjusting the spring, and the pressure block can be adjusted in height by adjusting the spring, so that it can meet the needs of wheel hub spinning manufacturing with hub parts of different axial lengths, ensuring that the spinning forming meets the design requirements.

[0004] The solution of the utility model to solve the technical problem is:

[0005] A deformation-proof spinning die for an aluminum alloy wheel hub comprises an upper die and a lower die, wherein the upper die is located directly above the lower die, a downwardly extending lower circular groove is formed in the middle of the top surface of the lower die, a lower ejector is inserted into the lower circular groove, the bottom surface of the lower ejector is pressed against the bottom surface of the lower circular groove, a downwardly extending central through hole is formed in the middle of the bottom surface of the lower circular groove, and the central through hole is a stepped through hole, the upper portion of which is a small-diameter hole section and the lower portion is a large-diameter hole section;

[0006] The middle part of the top surface of the lower ejector is formed with an upper groove, and the middle part of the bottom surface of the upper groove is formed with a vertical through hole. The fixed block is installed at the lower part of the middle part of the lower ejector, and the middle part of the top surface of the fixed block is formed with a cylindrical protrusion extending upward. The protrusion is inserted into the lower part of the vertical through hole, and the middle part of the top surface of the protrusion is formed with a first central through hole extending vertically downward. The inner side wall of the bottom end of the first central through hole is formed with an internal thread. The pressure block is in the upper groove, and the middle part of the bottom surface of the pressure block is formed with a downward extending cylindrical protrusion. The cylindrical upper protrusion extends outward, and the middle part of the top surface of the pressure block is formed with a second middle through hole extending downward and extending out of the middle part of the bottom surface of the upper protrusion. The screw portion of the connecting bolt is inserted into the second middle through hole and the first middle through hole. The bottom of the screw portion of the connecting bolt is screwed on the internal thread of the lower section of the first middle through hole. An adjusting spring is inserted into the screw portion of the connecting bolt, and the adjusting spring is inserted into the vertical through hole. The top end of the adjusting spring relies on the upper protrusion and the bottom end of the adjusting spring relies on the protrusion.

[0007] The upper part of the adjusting spring is inserted into the lower section of the second middle through hole, and the lower part of the adjusting spring is inserted into the upper section of the first middle through hole. The rotating part of the connecting bolt is inserted into the upper section of the second middle through hole, and the bottom surface of the rotating part is pressed against the bottom surface of the upper section of the second middle through hole. The top end of the adjusting spring is pressed on the top surface of the lower section of the second middle through hole, and the lower end is pressed on the bottom surface of the upper section of the first middle through hole.

[0008] Furthermore, the lower connecting column is inserted into the central through hole, and a radially extending edge is formed on the outer side of the lower portion of the lower connecting column, the outer side wall of the radially extending edge is close to the inner side wall of the lower hole section of the central through hole, and the upper outer side wall of the lower connecting column is close to or close to the inner side wall of the upper hole section of the central through hole. The top surface of the lower connecting column is fixedly connected to the bottom surface of the lower ejector by a bolt, and the top surface of the lower connecting column is pressed against the middle bottom surface of the lower ejector;

[0009] An upper circular concave hole is formed in the middle of the top surface of the lower connecting column, and a stepped through hole extending downward is formed in the middle of the bottom surface of the upper circular concave hole. The fixed block is in the upper circular concave hole, and the bottom edge of the fixed block is pressed against the bottom edge of the upper circular concave hole, and the top edge of the fixed block is pressed against the bottom surface of the lower ejector around the vertical through hole.

[0010] Furthermore, a circular upper concave hole extending upward is formed in the middle of the bottom surface of the upper mold, the upper mold block is inserted into the upper concave hole, the top surface of the upper mold block is pressed against the top surface of the upper concave hole and fixed by bolts, and the outer side wall of the upper mold block is close to the inner side wall of the upper concave hole.

[0011] Furthermore, a raised annular portion extending downward is formed on the bottom edge of the upper mold block, and the bottom surface of the raised annular portion is an arc-shaped wall surface that matches the top surface of the spoke of the wheel hub to be processed.

[0012] The outstanding effects of the utility model are:

[0013] Compared with the existing technology, it can realize that the top surface of the pressure block is pressed against the bottom end surface of the hub of the wheel hub for spinning by adjusting the spring, and the pressure block can be adjusted in height by adjusting the spring. Therefore, when the bottom end surface of the hub extends too long downward, it is only necessary to adjust the spring compression to make the pressure block drop. It can also ensure that the hub of the wheel hub and the spokes are completely fit and clamped between the upper mold and the lower mold, so that it can meet the spinning manufacturing of hubs with different axial lengths, and ensure that the spinning forming meets the design requirements. Description of the drawings:

[0014] Figure 1 It is a partial structural diagram of the utility model;

[0015] Figure 2 yes Figure 1 A partial enlarged view of . Specific implementation method:

[0016] For example, see Figures 1 to 2 As shown, an anti-deformation spinning die for an aluminum alloy wheel hub comprises an upper die 10 and a lower die 20. The upper die 10 is located directly above the lower die 20. A lower circular groove 21 extending downward is formed in the middle of the top surface of the lower die 20. A lower ejector 30 is inserted into the lower circular groove 21. The bottom surface of the lower ejector 30 is pressed against the bottom surface of the lower circular groove 21. A central through hole 22 extending vertically downward is formed in the middle of the bottom surface of the lower circular groove 21. The central through hole 22 is a stepped through hole with a small diameter hole section at the upper portion and a large diameter hole section at the lower portion.

[0017] The middle part of the top surface of the lower ejector 30 is formed with an upper groove, and the middle part of the bottom surface of the upper groove is formed with a vertical through hole 31. The fixing block 40 is installed at the lower part of the middle part of the lower ejector 30. The middle part of the top surface of the fixing block 40 is formed with a cylindrical protrusion 41 extending upward. The protrusion 41 is inserted into the lower part of the vertical through hole 31. The middle part of the top surface of the protrusion 41 is formed with a first central through hole 42 extending vertically downward. The inner side wall of the bottom end of the first central through hole 42 is formed with an internal thread. The pressure block 50 is in the upper groove. The outer diameter of the pressure block 50 is larger than the outer diameter of the vertical through hole 31. The middle part of the bottom surface of the pressure block 50 is formed with a cylindrical upper protrusion 51 extending downward. The part 51 is located at the upper part of the vertical through hole 31, and the outer side wall of the upper protrusion 51 is close to or close to the inner side wall of the upper part of the vertical through hole 31. The middle part of the top surface of the pressure block 50 is formed with a second middle through hole 52 extending downward and extending out of the middle part of the bottom surface of the upper protrusion 51. The screw portion of the connecting bolt 60 is inserted into the second middle through hole 52 and the first middle through hole 42. The bottom of the screw portion of the connecting bolt 60 is screwed on the internal thread of the lower section of the first middle through hole 42. The screw portion of the connecting bolt 60 is inserted with an adjusting spring 1, which is inserted in the vertical through hole 31. The top end of the adjusting spring 1 relies on the upper protrusion 51, and the bottom end of the adjusting spring 1 relies on the protrusion 41.

[0018] Furthermore, the first middle through hole 42 is a stepped through hole, the inner diameter of the upper section is larger than the inner diameter of the middle section, the inner diameter of the middle section is larger than the inner diameter of the lower section, and an internal thread is formed on the inner side wall of the lower section;

[0019] The inner diameter of the upper section of the second middle through hole 52 is larger than the inner diameter of the middle section, and the inner diameter of the middle section is smaller than the inner diameter of the lower section;

[0020] The upper part of the adjusting spring 1 is inserted into the lower section of the second middle through hole 52, and the lower part of the adjusting spring 1 is inserted into the upper section of the first middle through hole 42. The rotating part of the connecting bolt 60 is inserted into the upper section of the second middle through hole 52, and the bottom surface of the rotating part is pressed against the bottom surface of the upper section of the second middle through hole 52. The top end of the adjusting spring 1 is pressed against the top surface of the lower section of the second middle through hole 52, and the lower end is pressed against the bottom surface of the upper section of the first middle through hole 42.

[0021] Furthermore, the lower connecting column 70 is inserted into the central through hole 22, and a radially extending edge 71 is formed on the outer side of the lower portion of the lower connecting column 70. The outer side wall of the radially extending edge 71 is close to the inner side wall of the lower hole section of the central through hole 22, and the upper outer side wall of the lower connecting column 70 is close to or close to the inner side wall of the upper hole section of the central through hole 22. The top surface of the lower connecting column 70 is fixedly connected to the bottom surface of the lower ejector 30 by bolts, and the top surface of the lower connecting column 70 is pressed against the middle bottom surface of the lower ejector 30;

[0022] An upper circular concave hole 72 is formed in the middle of the top surface of the lower connecting column 70, and a stepped through hole extending downward is formed in the middle of the bottom surface of the upper circular concave hole 72. The fixing block 40 is located in the upper circular concave hole 72, and the bottom edge of the fixing block 40 is pressed against the bottom edge of the upper circular concave hole 72. The top edge of the fixing block 40 is pressed against the bottom surface of the lower ejector 30 around the vertical through hole 31. The bottom of the lower connecting column 70 is connected to the push rod of a pushing mechanism (such as a pushing cylinder). During subsequent demoulding, after the upper mold 10 is lifted, the push rod of the pushing mechanism pushes the lower connecting column 70, thereby lifting the lower ejector 30 and ejecting the wheel hub 100 on the lower ejector 30.

[0023] Furthermore, the upper inner wall of the lower circular groove 21 is a conical wall extending obliquely outward, and an outward-extending annular support portion 32 is formed on the outer side of the top surface of the lower ejector 30. The outer wall of the annular support portion 32 is a conical wall, which is tightly attached to the upper inner wall of the lower circular groove 21. The inner wall of the annular support portion 32 is an arc-shaped wall that matches the bottom surface of the spoke of the hub 100 to be processed.

[0024] Furthermore, a circular upper recessed hole 11 extending upward is formed in the middle of the bottom surface of the upper mold 10, and the upper mold pressing block 12 is inserted into the upper recessed hole 11. The top surface of the upper mold pressing block 12 is pressed against the top surface of the upper recessed hole 11 and fixedly connected by bolts, and the outer side wall of the upper mold pressing block 12 is tightly attached to the inner side wall of the upper recessed hole 11.

[0025] Furthermore, the bottom edge of the upper mold block 12 is formed with a downwardly extending raised annular portion 13. The bottom surface of the raised annular portion 13 is an arcuate wall surface that mates with the top surface of the spoke of the wheel hub 100 to be machined. The upper mold block 12 is made of a material with a lower hardness than the wheel hub 100, such as a pure aluminum block. When pressed against the top surface of the wheel hub 100's spokes, it does not leave any deep impressions on the top surface of the spokes, or even no impression at all, ensuring that the top surface of the wheel hub 100's spokes meets the machining requirements.

[0026] Furthermore, the edge of the bottom surface of the upper mold 10 is an arc-shaped wall surface that matches the top surface of the spoke of the wheel hub 100 to be processed.

[0027] When this embodiment is in use, the wheel hub 100 is clamped between the upper mold 10 and the lower mold 20. The top surface of the spokes of the wheel hub 100 is in close contact with the bottom surface of the raised annular portion 13 of the upper mold block 12 and the edge of the bottom surface of the upper mold 10. The bottom surface of the raised annular portion 13 of the upper mold block 12 and the edge of the bottom surface of the upper mold 10 match the top surface of the spokes of the wheel hub 100. The bottom surface of the spokes of the wheel hub 100 is pressed against the inner side wall of the annular support portion 32 and matches it.

[0028] At the same time, the pressure block 50 adjusts the elastic force of the spring 1 so that its top surface is pressed against the bottom surface of the hub, thereby achieving bottom pressure. It can meet the pressure requirements of hubs of different lengths, that is, no matter how long or short the bottom end surface of the hub extends downward, the elastic deformation of the spring 1 can be adjusted to adjust the height of the top surface of the pressure block 50, so that the bottom end surface of the hub can be subjected to subsequent normal spinning processing of the wheel hub 100, so that its forming size meets the design requirements.

[0029] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

Claims

1. An anti-deformation spinning die for an aluminum alloy wheel hub, comprising an upper die (10) and a lower die (20), wherein the upper die (10) is located directly above the lower die (20), and is characterized in that: A lower circular groove (21) extending downward is formed in the middle of the top surface of the lower mold (20), a lower ejector (30) is inserted into the lower circular groove (21), the bottom surface of the lower ejector (30) is pressed against the bottom surface of the lower circular groove (21), and a central through hole (22) extending vertically downward is formed in the middle of the bottom surface of the lower circular groove (21), the central through hole (22) is a stepped through hole, the upper portion of which is a small diameter hole section and the lower portion is a large diameter hole section; The middle part of the top surface of the lower ejector (30) is formed with an upper groove, the middle part of the bottom surface of the upper groove is formed with a vertical through hole (31), the fixed block (40) is installed at the lower part of the middle part of the lower ejector (30), the middle part of the top surface of the fixed block (40) is formed with a cylindrical protrusion (41) extending upward, the protrusion (41) is inserted into the lower part of the vertical through hole (31), the middle part of the top surface of the protrusion (41) is formed with a first middle through hole (42) extending vertically downward, the inner side wall of the bottom end of the first middle through hole (42) is formed with an internal thread, the pressure block (50) is in the upper groove, and the middle part of the bottom surface of the pressure block (50) is formed with a cylindrical protrusion (41) extending downward. The upper protrusion (51) is formed in the middle of the top surface of the pressure block (50) with a second middle through hole (52) extending downward and extending out of the middle of the bottom surface of the upper protrusion (51). The screw portion of the connecting bolt (60) is inserted into the second middle through hole (52) and the first middle through hole (42). The bottom of the screw portion of the connecting bolt (60) is screwed on the internal thread of the lower section of the first middle through hole (42). An adjusting spring (1) is inserted into the screw portion of the connecting bolt (60). The adjusting spring (1) is inserted into the vertical through hole (31). The top end of the adjusting spring (1) is applied to the upper protrusion (51) and the bottom end of the adjusting spring (1) is applied to the protrusion (41).

2. The anti-deformation spinning die for an aluminum alloy wheel hub according to claim 1, characterized in that: The first middle through hole (42) is a stepped through hole, the inner diameter of the upper section is larger than the inner diameter of the middle section, the inner diameter of the middle section is larger than the inner diameter of the lower section, and an internal thread is formed on the inner side wall of the lower section; The inner diameter of the upper section of the second middle through hole (52) is larger than the inner diameter of the middle section, and the inner diameter of the middle section is smaller than the inner diameter of the lower section; The upper part of the regulating spring (1) is inserted into the lower section of the second middle through hole (52), and the lower part of the regulating spring (1) is inserted into the upper section of the first middle through hole (42). The rotating part of the connecting bolt (60) is inserted into the upper section of the second middle through hole (52), and the bottom surface of the rotating part is pressed against the bottom surface of the upper section of the second middle through hole (52). The top end of the regulating spring (1) is applied to the top surface of the lower section of the second middle through hole (52), and the lower end is applied to the bottom surface of the upper section of the first middle through hole (42).

3. The anti-deformation spinning die for an aluminum alloy wheel hub according to claim 1, characterized in that: The lower connecting column (70) is inserted into the central through hole (22), and a radial extension edge (71) is formed on the outer side of the lower portion of the lower connecting column (70). The outer side wall of the radial extension edge (71) is close to the inner side wall of the lower hole section of the central through hole (22). The upper outer side wall of the lower connecting column (70) is in close contact with or close to the inner side wall of the upper hole section of the central through hole (22). The top surface of the lower connecting column (70) is fixedly connected to the bottom surface of the lower ejector (30) by bolts, and the top surface of the lower connecting column (70) is pressed against the middle bottom surface of the lower ejector (30); An upper circular concave hole (72) is formed in the middle of the top surface of the lower connecting column (70), and a stepped through hole extending downward is formed in the middle of the bottom surface of the upper circular concave hole (72). The fixed block (40) is located in the upper circular concave hole (72), and the bottom edge of the fixed block (40) is pressed against the bottom edge of the upper circular concave hole (72), and the top edge of the fixed block (40) is pressed against the bottom surface of the lower ejector (30) around the vertical through hole (31).

4. The anti-deformation spinning die for an aluminum alloy wheel hub according to claim 1, characterized in that: The upper inner side wall of the lower circular groove (21) is a tapered wall extending obliquely outward, and an annular support portion (32) extending outward is formed on the outer side of the top surface of the lower ejector (30). The outer side wall of the annular support portion (32) is a tapered wall surface, which is tightly attached to the upper inner side wall of the lower circular groove (21), and the inner side wall of the annular support portion (32) is an arc-shaped wall surface that matches the bottom surface of the spoke of the wheel hub (100) to be processed.

5. The anti-deformation spinning die for an aluminum alloy wheel hub according to claim 1, characterized in that: An upper circular concave hole (11) extending upward is formed in the middle of the bottom surface of the upper mold (10), and the upper mold pressing block (12) is inserted into the upper concave hole (11). The top surface of the upper mold pressing block (12) is pressed against the top surface of the upper concave hole (11) and is fixedly connected by bolts, and the outer side wall of the upper mold pressing block (12) is tightly attached to the inner side wall of the upper concave hole (11).

6. The anti-deformation spinning die for an aluminum alloy wheel hub according to claim 5, characterized in that: The bottom edge of the upper mold block (12) is formed with a downwardly extending raised annular portion (13), and the bottom surface of the raised annular portion (13) is an arc-shaped wall surface that matches the top surface of the spoke of the wheel hub (100) to be processed.

7. The anti-deformation spinning die for an aluminum alloy wheel hub according to claim 5, characterized in that: The edge of the bottom surface of the upper mold (10) is an arc-shaped wall surface that matches the top surface of the spoke of the wheel hub (100) to be processed.

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