Hot forging die for ball shell of ball pin

Abstract

The utility model belongs to the technical field of ball pin machining dies, and particularly relates to a hot forging die of a ball pin spherical shell, the ball pin spherical shell comprises a shell and a connecting rod part, the hot forging die comprises an upper die and a lower die, the upper die is provided with a first cavity matched with the shell, and the upper die extends towards the connecting rod part to form a first limiting section; the lower die is provided with a second cavity matched with the shell and extends towards the connecting rod part to form a second limiting section. The first limiting section and the second limiting section are matched with the connecting rod part; the first cavity and the second cavity extend towards the connecting rod part to form the first limiting section and the second limiting section which are matched with the connecting rod part respectively, so that when an operator clamps the connecting rod part through a tool to place a spherical shell blank on the lower die, the second limiting section is convenient for putting the blank right; and when the upper die is pressed downwards, the spherical shell blank can be corrected through the first limiting section, and the forging precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball stud processing dies, in particular to a hot forging die for a ball stud shell. Background Art

[0002] The ball stud is an important part of the automobile steering rod connection, and is widely used in independent suspension systems. It mainly includes a ball head and a ball shell. The ball shell is usually processed by casting, forging, and turning. Forging has the compact structure of forged parts, good mechanical properties, and can save metal materials, so it is widely used in the molding of ball studs and ball shells.

[0003] Traditional forging includes hot forging, warm forging and cold forging. Hot forging is more conducive to forging and forming. Therefore, in the forming of ball stud shells, the blank is usually heated to a certain temperature before forging. However, because the temperature of the blank is relatively high and the shell usually includes a shell and a connecting rod, the operator usually needs to use tools to clamp the connecting rod of the blank and place it in a hot forging die. Affected by the connecting rod and the uncertainty of the tool clamping angle, the blank is easily misplaced in the hot forging die, thereby affecting the forging accuracy of the inner wall of the shell, which needs to be improved. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems and provide a hot forging die for a ball stud shell, which facilitates the alignment of a blank in the hot forging die and avoids affecting the forging accuracy.

[0005] In view of this, the utility model provides a hot forging die for a ball stud shell, the ball stud shell comprising a shell and a connecting rod portion, and the hot forging die comprises:

[0006] The upper mold is provided with a first cavity adapted to the housing and extends toward the connecting rod portion to form a first limiting section;

[0007] The lower mold is provided with a second cavity adapted to the shell and extends toward the connecting rod portion to form a second limiting section;

[0008] Wherein, the first limiting section and the second limiting section are both matched with the connecting rod portion.

[0009] In the above technical solution, further, it also includes:

[0010] A first ejector pin connected to the axis of the first cavity of the upper mold;

[0011] The second ejector column is connected to the axis center of the second cavity of the lower mold and is coaxially arranged with the first ejector column.

[0012] In the above technical solution, it is further characterized in that:

[0013] An annular groove is formed on one side of the abutment point between the first top column and the second top column away from the axis.

[0014] In the above technical solution, further:

[0015] One end of the first top column close to the second top column is provided with a groove matched with the top end of the second top column.

[0016] In the above technical solution, further:

[0017] The cross section of the second top column close to one end of the first top column is arc-shaped, and the cross section of the groove is also arc-shaped.

[0018] In the above technical solution, further, it also includes:

[0019] A first flange connected to the upper mold;

[0020] The second flange is connected to the lower mold.

[0021] In the above technical solution, further:

[0022] The first flange is an integral structure with the upper mold, and the second flange is an integral structure with the lower mold.

[0023] The beneficial effects of the utility model are:

[0024] 1. The first limit section and the second limit section adapted to the connecting rod part are respectively formed by extending the first cavity and the second cavity to the connecting rod part. When the operator clamps the connecting rod part by tools and places the ball shell blank on the lower die, the second limit section facilitates the alignment of the blank, and when the upper die is pressed down, the ball shell blank can be corrected by the first limit section, thereby improving the forging accuracy.

[0025] 2. By setting the first push column and the second push column, the coaxiality of the inner wall of the spherical shell blank after hot forging is guaranteed, and the forging accuracy is further improved; and an arc-shaped groove is provided on the first push column, and the second push column is adapted thereto, so that when the upper mold and the lower mold are installed, a correction effect is played, thereby improving the installation accuracy and convenience of the upper mold and the lower mold, and ensuring the forging accuracy.

[0026] 3. By setting the first flange and the second flange, the installation stability of the upper die and the lower die is improved, and the installation accuracy is further improved to ensure the forging accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an exploded view of the utility model;

[0028] Figure 2 It is a side view of the utility model;

[0029] Figure 3 This utility model Figure 2 Sectional view at AA in the middle;

[0030] The markings in the figure are as follows: 1. shell; 2. connecting rod; 3. upper mold; 4. first cavity; 5. first limiting section; 6. lower mold; 7. second cavity; 8. second limiting section; 9. first push column; 10. second push column; 11. annular groove; 12. groove; 13. first flange; 14. second flange. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0032] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0034] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0035] Embodiment 1:

[0036] This embodiment provides a hot forging die for a ball stud shell, the ball stud shell comprising a shell 1 and a connecting rod portion 2, and the hot forging die comprises:

[0037] The upper mold 3 is provided with a first cavity 4 adapted to the housing 1 and extends toward the connecting rod portion 2 to form a first limiting section 5;

[0038] The lower mold 6 is provided with a second mold cavity 7 adapted to the housing 1 and extends toward the connecting rod portion 2 to form a second limiting section 8;

[0039] The first limiting section 5 and the second limiting section 8 are both adapted to the connecting rod portion 2;

[0040] At the same time, the blank of the ball stud ball head may include a cylinder and a connecting rod portion 2, which is convenient for direct molding;

[0041] Furthermore, the ball stud shell formed by the hot forging die of the present application needs to be subsequently processed with an annular groove 11 on its surface for embedding the dust cover clamp and an annular groove 11 on its inner wall for embedding the retaining spring after the ball seat is installed in the ball shell. At the same time, the connecting rod part 2 also needs to be processed with external threads on the surface. These are all existing technologies and will not be repeated here.

[0042] It can be seen from the present embodiment that the first limit section 5 and the second limit section 8 which are adapted to the connecting rod part 2 are respectively formed by extending the first cavity 4 and the second cavity 7 toward the connecting rod part 2. When the operator clamps the connecting rod part 2 by means of a tool and places the spherical shell blank on the lower die 6, the second limit section 8 facilitates the alignment of the blank. When the upper die 3 is pressed downward, the spherical shell blank can be corrected by means of the first limit section 5, thereby improving the forging accuracy.

[0043] Embodiment 2:

[0044] This embodiment provides a hot forging die for a ball stud shell, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0045] A first ejector post 9 connected to the axis of the first cavity 4 of the upper mold 3;

[0046] The second ejector pin 10 is connected to the axis of the second cavity 7 of the lower mold 6 and is coaxially arranged with the first ejector pin 9;

[0047] The first top column 9 and the upper mold 3 are in an integrated structure, and the second top column 10 and the lower mold 6 are in an integrated structure.

[0048] It can be seen from this embodiment that the arrangement of the first push column 9 and the second push column 10 facilitates the inner wall forming of the spherical shell blank, ensures the coaxiality of the inner wall of the spherical shell blank after hot forging, and further improves the forging accuracy.

[0049] Embodiment 3:

[0050] This embodiment provides a hot forging die for a ball stud shell, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0051] An annular groove 11 is formed on the side away from the axis where the first top column 9 and the second top column 10 abut against each other;

[0052] The first top column 9 has a first rounded corner on its surface close to one end of the second top column 10 , and the second top column 10 has a second rounded corner on its surface close to one end of the first top column 9 .

[0053] It can be seen from this embodiment that the annular groove 11 is formed at the joint between the first top column 9 and the second top column 10, which facilitates the processing of the inner wall of the spherical shell blank and improves the hot forging efficiency and accuracy of the inner wall of the spherical shell blank.

[0054] Embodiment 4:

[0055] This embodiment provides a hot forging die for a ball stud shell, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0056] A groove 12 adapted to the top of the second top column 10 is formed at one end of the first top column 9 close to the second top column 10;

[0057] When the upper mold 3 and the lower mold 6 are matched, the top end of the second ejector post 10 is located in the groove 12 .

[0058] It can be seen from the present embodiment that an arc-shaped groove 12 is provided on the first top column 9 and the second top column 10 is matched therewith, so that after the upper mold 3 and the lower mold 6 are installed, a verification effect is achieved, thereby improving the installation accuracy and convenience of the upper mold 3 and the lower mold 6 and ensuring the forging accuracy; specifically, when there is a gap between the upper mold 3 and the lower mold 6, that is, the top end of the second top column 10 is not embedded in the groove 12, that is, the upper mold 3 and the lower mold 6 are not aligned, hot forging is prevented when there is a deviation, which may cause damage to the hot forging mold.

[0059] Embodiment 5:

[0060] This embodiment provides a hot forging die for a ball stud shell, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0061] The cross section of the second top column 10 at one end close to the first top column 9 is arc-shaped, and the cross section of the groove 12 is also arc-shaped.

[0062] It can be seen from the present embodiment that by setting the cross-section of the second top column 10 close to one end (i.e., the top end) of the first top column 9 to be arc-shaped, the cross-section of the groove 12 is also arc-shaped, which effectively improves the coaxiality of the first top column 9 and the second top column 10 after the upper mold 3 and the lower mold 6 are matched, that is, when the upper mold 3 and the lower mold 6 are installed, the installation accuracy is effectively guaranteed, and when the upper mold 3 and the lower mold 6 are installed and aligned, a correction effect can be achieved.

[0063] Embodiment 6:

[0064] This embodiment provides a hot forging die for a ball stud shell, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0065] A first flange 13 connected to the upper mold 3;

[0066] The second flange 14 is connected to the lower mold 6 .

[0067] It can be seen from this embodiment that by setting the first flange 13 and the second flange 14, the installation stability of the upper mold 3 and the lower mold 6 is improved and the installation accuracy is further improved to ensure the forging accuracy. At the same time, the structure of the flange can also effectively improve the connection strength, avoid displacement due to long-term forging, and extend the service life of the hot forging mold.

[0068] Embodiment 7:

[0069] This embodiment provides a hot forging die for a ball stud shell, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0070] The first flange 13 is an integral structure with the upper mold 3, and the second flange 14 is an integral structure with the lower mold 6;

[0071] The first flange 13 and the upper mold 3 as well as the second flange 14 and the lower mold 6 can be formed by milling.

[0072] It can be seen from this embodiment that by adopting an integrated structure between the first flange 13 and the upper mold 3 and between the second flange 14 and the lower mold 6, the coaxiality between the first flange 13 and the upper mold 3 and between the second flange 14 and the lower mold 6 can be ensured, thereby ensuring manufacturing accuracy and further ensuring forging accuracy.

[0073] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A hot forging die for a ball stud shell, the ball stud shell comprising a shell (1) and a connecting rod (2), characterized in that: Hot forging dies include: The upper mold (3) is provided with a first mold cavity (4) adapted to the housing (1) and extends toward the connecting rod portion (2) to form a first limiting section (5); The lower mold (6) is provided with a second mold cavity (7) adapted to the housing (1) and extends toward the connecting rod portion (2) to form a second limiting section (8); Wherein, the first limiting section (5) and the second limiting section (8) are both adapted to the connecting rod portion (2).

2. The hot forging die for the ball stud shell according to claim 1, characterized in that: Also includes: A first ejector post (9) connected to the axis of the first cavity (4) of the upper mold (3); The second ejector post (10) is connected to the axis center of the second cavity (7) of the lower mold (6) and is coaxially arranged with the first ejector post (9).

3. The hot forging die for the ball stud shell according to claim 2, characterized in that: An annular groove (11) is formed on the side away from the axis at the abutment point between the first top column (9) and the second top column (10).

4. The hot forging die for the ball stud shell according to claim 2, characterized in that: A groove (12) adapted to the top of the second top column (10) is formed at one end of the first top column (9) close to the second top column (10).

5. The hot forging die for the ball stud shell according to claim 4, characterized in that: The cross section of the second top column (10) at one end close to the first top column (9) is arc-shaped, and the cross section of the groove (12) is also arc-shaped.

6. The hot forging die for the ball stud shell according to claim 1, characterized in that: Also includes: A first flange (13) connected to the upper mold (3); The second flange (14) is connected to the lower mold (6).

7. The hot forging die for the ball stud shell according to claim 6, characterized in that: The first flange (13) and the upper mold (3) are an integral structure, and the second flange (14) and the lower mold (6) are an integral structure.

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