Press machine for machining automobile part hub

Abstract

The invention relates to the technical field of hub production and machining, and provides a press machine for machining an automobile part hub, the press machine is used for punching a plurality of fixing holes arranged along the circumference in the middle of a spoke, the press machine comprises a die holder and a punching head, and the die holder is used for placing the spoke to be punched; the punching head is arranged above the die holder in a lifting mode, the punching head can punch a spoke located on the die holder after lifting, at least three punching rods are arranged at the bottom of the punching head, the at least three punching rods are arranged along the circumference, each punching rod is provided with a punching face, and the punching faces face the die holder; the at least three punching rods are divided into at least two groups, each group comprises at least one punching rod, the punching surfaces in each group are coplanar, and the distances from the punching surfaces of any two groups to the die holder are different. By means of the technical scheme, the technical problem that in the prior art, a press cannot achieve efficient punching of fixing holes in the spoke while low power is guaranteed is solved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of hub production and processing, and specifically, to a press for processing automotive accessory hubs. Background Art

[0002] As a key component of a vehicle, the spokes and rims of an automotive hub are usually formed by welding after separate processing. During the spoke processing, the punching process is crucial. The punched ventilation holes and fixing holes have different functions: the ventilation holes can promote air circulation, effectively dissipate the heat generated by friction in the braking system, and ensure stable braking performance; while the fixing holes distributed along the circumference are connected to the axle through bolts or nuts to ensure the stable rotation of the hub and achieve efficient transmission of driving force, braking force, and steering force.

[0003] Currently, there are technological bottlenecks in punching the fixing holes of spokes. Existing press equipment can be mainly divided into two categories: one category uses multiple punching heads to operate simultaneously, which can complete the punching of all fixing holes at one time. Although the processing efficiency is high, it has strict requirements for the equipment power, resulting in high energy consumption and a significant increase in equipment purchase cost; the other category uses a single punching head to punch holes one by one. Although it reduces the equipment power requirement, the overall processing efficiency is greatly reduced due to the need to frequently rotate the spoke. How to balance the contradiction between processing efficiency and equipment energy consumption and cost has become a technical problem to be solved urgently.

[0004] Based on this, the present application is committed to developing a new type of press equipment, which can significantly improve the punching efficiency of the fixing holes of the spoke on the premise of ensuring a low power requirement. Summary of the Invention

[0005] To overcome the above defects, embodiments of the present invention provide a press for processing automotive accessory hubs, which solves the technical problem in the related art that the press cannot punch the fixing holes of the spoke efficiently while ensuring low power.

[0006] According to one aspect, at least one embodiment of the present invention provides a press for processing automotive accessory hubs, which is used to punch a plurality of circumferentially arranged fixing holes in the middle of a spoke, and includes: A die base for placing the spoke to be punched; A punching head is arranged above the die base in a liftable manner, and the punching head can move up and down to punch the spoke located on the die base; The bottom of the punching head has at least three punching rods, the punching rods are arranged in a circle, and the punching rods have a punching surface facing the die base; The punching rods are at least divided into two groups, each group has at least one punching rod, the punching surfaces of the punching rods in the same group are coplanar, and the distances from the punching surfaces of any two groups of punching rods to the die base are different.

[0007] For example, at least one embodiment of the present disclosure provides a press for processing automobile parts hubs. Among the group of punching rods whose punching surface is closest to the die base, there are at least two punching rods.

[0008] For example, at least one embodiment of the present disclosure provides a press for processing automobile parts hubs. The distance difference between the punching surfaces of any two groups of the punching rods and the die base is greater than or equal to the thickness of the spoke.

[0009] For example, at least one embodiment of the present disclosure provides a press for processing a hub of an automobile component, further comprising: A limiting pressing piece is slidably arranged at the bottom of the punching head, and the limiting pressing piece has a plurality of limiting holes which are arranged one by one corresponding to the punching rods and are used for the punching rods to pass through; The limiting pressing piece can move downward with the punching head and press against the spoke, and the punching head can continue to descend after the limiting pressing piece presses against the spoke to allow the punching rod to penetrate the limiting hole and punch the spoke.

[0010] For example, at least one embodiment of the present disclosure provides a press for processing automobile parts hubs. A groove is formed at the bottom of the position-limiting pressing piece; A lubricating oil smearing assembly is arranged in the groove, and a clearance hole for the punching rod to pass through is opened on the lubricating oil smearing assembly, and the lubricating oil smearing assembly is used to smear lubricating oil on the area to be punched of the spoke.

[0011] For example, at least one embodiment of the present disclosure provides a press for processing automobile parts hubs. The lubricating oil applying component is a sponge block, which is protruding downward from the groove. The sponge block can squeeze out the lubricating oil after the limiting pressing piece is pressed on the spoke.

[0012] For example, at least one embodiment of the present disclosure provides a press for processing automobile parts hubs. The groove is annular; The lubricating oil application assembly comprises: An annular smearing member is rotatably arranged in the groove, the clearance hole is located on the annular smearing member, and the annular smearing member can rotate relative to the limiting pressure member and apply lubricating oil on the spokes.

[0013] For example, at least one embodiment of the present disclosure provides a press for processing automobile parts hubs. A sliding hole is provided in the middle of the position-limiting pressing piece, and a sliding rod is provided at the bottom of the punch head. The sliding rod passes through the sliding hole and is slidably matched with the sliding hole. A rotation driving guide groove is formed on the side wall of the sliding rod, a driving hole communicating with the groove is formed on the inner wall of the sliding hole, a driving rod is arranged in the driving hole, one end of the driving rod is connected to the annular coating member, and the other end extends into the rotation driving guide groove. The rotation driving guide groove is configured to be able to drive the driving rod to rotate reciprocally along the circumference to drive the annular coating member to rotate after the limiting pressing member slides.

[0014] For example, a press for processing automotive accessory wheels provided by at least one embodiment of the present disclosure The annular coating member has a lubricating oil cavity, the bottom of the annular coating member has a flexible coating member, and an oil outlet hole for supplying oil to the flexible coating member is formed on the bottom wall of the lubricating oil cavity.

[0015] For example, a press for processing automotive accessory wheels provided by at least one embodiment of the present disclosure A channel communicating with the lubricating oil cavity is formed inside the driving rod, an inflation assembly for inflating the channel is connected to the driving rod, the inflation assembly is located in the rotation driving guide groove, and the inflation assembly can be in contact with the inner wall of the rotation driving guide groove when the punching head moves downward relative to the limiting pressing member to inflate the lubricating oil cavity and make the oil outlet hole discharge oil.

[0016] The beneficial effects of the embodiments of the present invention are as follows: In the present invention, the design that the convex surface of the die base is adapted to the concave surface of the spoke provides a stable positioning method for the spoke. During the punching process, this tightly fitting positioning method can effectively prevent the spoke from shifting or shaking, thereby ensuring the position accuracy and processing quality of the fixing holes.

[0017] The punching rods of the punching head are grouped, and the distances from the punching surfaces of different groups to the die base are different, so that the punching rods of different groups punch the spoke in sequence during the downward movement of the punching head. Compared with the existing technology of punching with multiple punching heads simultaneously, only one group of punching rods works each time in this structure, greatly reducing the power requirement for the punching equipment, and thus reducing the equipment energy consumption and purchase cost.

[0018] Compared with the method of punching holes one by one with a single punching head that requires frequent rotation of the spoke, this press can punch multiple fixing holes during one downward movement of the punching head, reducing the rotation times of the spoke and the lifting times of the punching head, and significantly improving the punching efficiency. By grouping at least three punching rods, the number and position of each group of punching rods can be flexibly adjusted according to the distribution and quantity requirements of the fixing holes on the spoke, further optimizing the punching process. While ensuring the low-power operation of the equipment, high-efficiency processing production is achieved, successfully solving the contradiction between efficiency, energy consumption, and cost in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the exemplary embodiments of the present invention and these drawings.

[0020] Figure 1 Schematic diagram of the three-dimensional structure of a press for processing automobile accessory wheels in an embodiment of the present invention Figure 1 ; Figure 2 For Figure 1 Schematic diagram of the three-dimensional structure in the embodiment of Figure 2 ; Figure 3 For Figure 2 Schematic diagram of the enlarged structure of part A in Figure 4 For Figure 1 Schematic diagram of the three-dimensional structure after placing the wheel spokes in the embodiment of Figure 5 For Figure 1 Schematic diagram of the front view structure in the embodiment of Figure 6 For Figure 5 Schematic diagram of the cross-sectional structure of B-B in Figure 7 For Figure 6 Schematic diagram of the enlarged structure of part C in Figure 8 Schematic diagram of the structure of one implementation mode of the lubricating oil application component Figure 9 For Figure 8 Exploded structure diagram of the embodiment of Figure 10 Schematic diagram of the structure of another implementation mode of the lubricating oil application component Figure 11 For Figure 10 Exploded structure diagram of the embodiment of Figure 12 Schematic diagram of the structure of the wheel spokes in the wheel hub Figure 13 Schematic diagram of the structure of the wheel spokes In the figure: 1 - die holder, 2 - stamping head, 21 - punching rod, 22 - stamping surface, 23 - sliding rod, 24 - rotation drive guide groove, 3 - limiting pressing part, 31 - limiting hole, 32 - sliding hole, 33 - drive hole, 34 - drive rod, 35 - channel, 36 - inflation component, 37 - groove, 4 - lubricating oil coating component, 41 - relief hole, 42 - annular coating part, 43 - lubricating oil cavity, 44 - flexible coating part, 45 - oil outlet hole, 9 - spoke, 91 - fixing hole. Detailed implementation manners

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention.

[0022] For the sake of simplicity of the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent their actual structures as products. In addition, for the sake of simplicity and understanding of the drawings, in some figures, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0023] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is lower than that of the second feature.

[0025] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0026] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0027] As Figures 1 to 13 shown, it shows a press for machining an automotive parts wheel hub in an embodiment of the present invention, which is used to punch a plurality of fixed holes 91 arranged in a circle in the middle of the spoke 9, and includes a die base 1 and a punching head 2. The spoke 9 has a convex surface and a concave surface. The upper surface of the die base 1 is in a convex shape, and the contour of the convexity is adapted to the contour of the concave surface of the spoke 9. When the spoke 9 is placed on the die base 1, the concave surface of the spoke 9 is in close fit with the convex surface of the die base 1, thereby realizing the positioning of the spoke 9 on the die base 1 and ensuring that the area to be punched in the middle of the spoke 9 corresponds to the punching position of the punching head 2.

[0028] The punching head 2 is arranged directly above the die base 1 through a lifting drive mechanism. The lifting drive mechanism uses a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixed on the frame of the press, and the piston rod is connected to the punching head 2. The punching head 2 is driven to move up and down in the vertical direction by the telescopic movement of the piston rod.

[0029] At least three punching rods 21 are provided at the bottom of the punching head 2, and these punching rods 21 are arranged in a circle with the center of the punching head 2 as the center. At least three punching rods 21 are at least divided into two groups, and each group has at least one punching rod 21. Within the same group, the punching surfaces 22 of all the punching rods 21 are in the same horizontal plane; while between any two groups, the distances from the punching surfaces 22 to the die base 1 are different.

[0030] For example, when there are four punching rods 21 at the bottom of the punching head 2, they can be divided into two groups. The first group includes two punching rods 21, and the distance from their punching surfaces 22 to the upper surface of the die base 1 is H1; the second group also includes two punching rods 21, and the distance from their punching surfaces 22 to the upper surface of the die base 1 is H2, and H1 < H2.

[0031] When punching the fixing holes 91, first make the concave surface of the spoke 9 fit with the convex surface of the die base 1, so that the spoke 9 is stably placed on the die base 1. Then, the hydraulic cylinder drives the punching head 2 to move downward. When the punching surface 22 of the first group of punching rods 21 contacts the spoke 9 as the punching head 2 descends, the first group of punching rods 21 punches the spoke 9. At this time, the punching surface 22 of the second group of punching rods 21 has not yet contacted the spoke 9. After the first group of punching is completed, the hydraulic cylinder continues to drive the punching head 2 to descend until the punching surface 22 of the second group of punching rods 21 contacts the spoke 9, and the second group of punching rods 21 punches the spoke 9. After punching is completed, the hydraulic cylinder drives the punching head 2 to rise and reset, completing one punching process.

[0032] Beneficial effects: The design that the convex surface of the die base 1 is adapted to the concave surface of the spoke 9 provides a stable positioning method for the spoke 9. During the punching process, this tightly fitting positioning method can effectively prevent the spoke 9 from shifting or shaking, thus ensuring the position accuracy and processing quality of the fixing holes 91.

[0033] The punching rods 21 of the punching head 2 are grouped, and the distances from the punching surfaces 22 of different groups to the die base 1 are different, so that the punching rods 21 of different groups punch the spoke 9 in sequence during the descent of the punching head 2. Compared with the existing technology of simultaneous punching with multiple punches, only one group of punching rods 21 works each time in this structure, greatly reducing the power requirement for the punching equipment, and thus reducing the equipment energy consumption and purchase cost.

[0034] Compared with the method of punching holes one by one with a single punch and frequently rotating the spoke 9, this press can punch multiple fixing holes 91 during one descent of the punching head 2, reducing the rotation times of the spoke 9 and the lifting and lowering times of the punching head 2, and significantly improving the punching efficiency. By grouping at least three punching rods 21, the number and position of each group of punching rods 21 can be flexibly adjusted according to the distribution and quantity requirements of the fixing holes 91 on the spoke 9, further optimizing the punching process. While ensuring the low-power operation of the equipment, high-efficiency processing and production are achieved, successfully solving the contradiction between efficiency, energy consumption, and cost in the existing technology.

[0035] For example, as Figure 5 shown, in the group where the punching surface 22 is closest to the die base 1, at least two punching rods 21 are provided. For example, when there are five punching rods 21 divided into three groups, two punching rods 21 are set in the first group closest to the die base 1. In this way, during the descent of the punching head 2, these two punching rods 21 first perform punching operations on the spoke 9 (after the two punches are completed, the position of the spoke 9 is further stabilized, so that the subsequent punching positions are more accurate).

[0036] Furthermore, the distance difference between the stamping surfaces 22 of any two groups to the die base 1 is at least the thickness of the spoke 9. Assuming the thickness of the spoke 9 is t, if the distance from the stamping surface 22 of the first group of punching rods 21 to the die base 1 is H1 and that of the second group is H2, then H2 - H1 ≥ t. This can ensure that after one group of punching rods 21 completes punching, when the other group of punching rods 21 starts to work, it will not be affected by the already punched area.

[0037] Furthermore, the limiting pressure member 3 is slidably arranged on the slide rod 23 at the bottom of the stamping head 2 through the slide hole 32 (as shown in Figure 3 the bottom of the slide rod 23 is provided with a limiting protrusion to prevent the limiting pressure member 3 from falling off the slide rod 23. When the limiting pressure member 3 is at the lowest position, at least one group of punching rods 21 is located in the limiting hole 31). The limiting pressure member 3 is provided with limiting holes 31 corresponding to the same number as the punching rods 21. When the stamping head 2 descends, the limiting pressure member 3 first follows and descends and presses on the spoke 9 located on the die base 1. At this time, the stamping head 2 continues to descend, and the punching rods 21 penetrate through the limiting holes 31 to punch the spoke 9.

[0038] Beneficial effects: At least two punching rods 21 are provided in the group where the stamping surface 22 is closest to the die base 1. Multiple holes can be punched simultaneously at the beginning of the stamping stage, further improving the initial punching efficiency, reducing the overall punching time, and most importantly, locking the relative position of the spoke 9, providing an accurate position guarantee for subsequent punching.

[0039] The distance difference is at least the thickness of the spoke 9, ensuring the independence and effectiveness of the work of different groups of punching rods 21. It avoids the adverse effects of the latter group of punching rods 21 on the already punched area of the former group during work due to too close distance, such as causing deformation of the holes, etc., and improves the processing quality of the fixed holes 91.

[0040] The limiting pressure member 3 plays an important role in positioning and stabilizing during the punching process. Before the punching rods 21 punch holes, the limiting pressure member 3 first presses on the spoke 9 to prevent the spoke 9 from displacing during the punching process, ensuring the position accuracy of punching. At the same time, the limiting holes 31 play a guiding role for the punching rods 21, ensuring that the punching rods 21 punch holes vertically and improving the punching perpendicularity and accuracy.

[0041] As a further embodiment, as shown in Figures 8 to 11 a lubricating oil application component 4 is arranged in the annular groove 37 opened at the bottom of the limiting pressure member 3.

[0042] Preferably, as shown in Figure 8 and Figure 9 the lubricating oil application component 4 in the form of a sponge block, and a part of the sponge block extends out of the groove 37. When the limiting pressure member 3 presses on the spoke 9, the sponge block is squeezed, thereby squeezing out the lubricating oil and applying it to the area to be punched on the spoke 9.

[0043] As a further embodiment, referring to Figure 10 and Figure 11 shown, another form of the lubricating oil application assembly 4 is described. The annular applicator 42 is reciprocally rotatably arranged in the annular groove 37, and a relief hole 41 is formed therein. A rotation driving guide groove 24 is formed on the side wall of the sliding rod 23, and a driving hole 33 (referring to Figure 3 shown, the driving hole 33 includes two vertical holes at the upper and lower parts and a bent hole in the middle. When the driving rod 34 is located at the vertical hole position, the relief hole 41 and the limiting hole 31 are coaxial. When the driving rod 34 is located in the bent hole, the stamping surface 22 closest to the specific die base 1 is located above the die base) is provided with a driving rod 34 inside the inner wall of the sliding hole 32. One end of the driving rod 34 is arranged on the inner wall of the annular applicator 42, and the other end extends into the rotation driving guide groove 24. When the limiting pressing member 3 slides on the sliding rod 23, the rotation driving guide groove 24 will drive the driving rod 34 to reciprocally rotate in a circular motion, thereby driving the annular applicator 42 to rotate.

[0044] Preferably, the annular applicator 42 has a lubricating oil cavity 43 inside, and a flexible applicator 44 at the bottom. An oil outlet hole 45 is formed on the cavity wall of the lubricating oil cavity 43. A channel 35 is formed inside the driving rod 34 and communicates with the lubricating oil cavity 43. An inflation assembly 36 is arranged on the outer wall of the driving rod 34 at the position where it is located in the rotation driving guide groove 24. Under the extrusion of the inner wall of the rotation driving guide groove 24, air is inflated into the lubricating oil cavity 43, so that the oil outlet hole 45 discharges oil, and the lubricating oil is applied to the spoke 9 through the flexible applicator 44.

[0045] Beneficial effects: The lubricating oil application assembly 4 can apply lubricating oil to the area to be punched of the spoke 9. The lubricating oil can reduce the friction between the punching rod 21 and the spoke 9, reduce the wear of the punching rod 21, and extend its service life. At the same time, the heat generated by friction is reduced, avoiding the deformation of the spoke 9 material due to overheating, and improving the punching quality and surface finish.

[0046] For the lubricating oil application assembly 4 in the form of a sponge block, the cost is low, and the lubricating oil can be effectively applied by extrusion. For the lubricating oil application assembly 4 in the form of the annular applicator 42, the reciprocating rotation of the annular applicator 42 is realized through structures such as the rotation driving guide groove 24 (which is strip-shaped and has an offset along the circumferential direction of the sliding rod 23. Then, when the sliding rod 23 moves in the vertical direction, it will drive the driving rod 34 to reciprocally rotate in a circular motion), the driving rod 34, etc. The inflation assembly 36 (which can be an airbag or a piston rod, etc.) inflates air into the lubricating oil cavity 43 under the extrusion of the driving surface in the rotation driving guide groove 24, enabling the lubricating oil to be more evenly and efficiently applied to the spoke 9, further improving the lubrication effect and punching quality.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A press machine for processing automobile hub parts, used for punching a plurality of circumferentially arranged fixing holes (91) in the middle of a spoke (9), characterized in that: include: A die base (1) for placing the spokes (9) to be punched; A punch head (2) is arranged to be lifted above the die base (1), and the punch head (2) can be lifted and moved to punch holes in the spokes (9) located on the die base (1); The bottom of the punching head (2) has at least three punching rods (21), the punching rods (21) are arranged along a circumference, and the punching rods (21) have a punching surface (22) arranged toward the die base (1); The punching rods (21) are divided into at least two groups, each group having at least one punching rod (21), the punching surfaces (22) of the punching rods (21) in the same group are coplanar, and the distances from the punching surfaces (22) of any two groups of punching rods (21) to the die base (1) are different.

2. A press machine for processing automobile parts hubs according to claim 1, characterized in that: In a group of the punching rods (21) whose punching surface (22) is closest to the die base (1), there are at least two punching rods (21).

3. The press machine for processing automobile parts hub according to claim 1, characterized in that: The distance difference between the punching surfaces (22) of any two groups of the punching rods (21) and the die base (1) is greater than or equal to the thickness of the spoke (9).

4. The press machine for processing automobile parts hub according to claim 1, characterized in that: Also includes: A limiting pressure piece (3) is slidably arranged at the bottom of the punching head (2), and the limiting pressure piece (3) has a plurality of limiting holes (31) arranged in one-to-one correspondence with the punching rods (21) for the punching rods (21) to pass through. The limiting pressure piece (3) can move downward with the punching head (2) and press against the spoke (9); the punching head (2) can continue to descend after the limiting pressure piece (3) presses against the spoke (9) so that the punching rod (21) passes through the limiting hole (31) and punches the spoke (9).

5. A press machine for processing automobile parts hubs according to claim 4, characterized in that: The bottom of the position limiting pressing piece (3) is provided with a groove (37); A lubricating oil smearing assembly (4) is arranged in the groove (37), and a clearance hole (41) for the punching rod (21) to pass through is formed on the lubricating oil smearing assembly (4), and the lubricating oil smearing assembly (4) is used to smear lubricating oil on the area to be punched of the spoke (9).

6. A press machine for processing automobile parts hubs according to claim 5, characterized in that: The lubricating oil smearing component (4) is a sponge block, which is arranged to protrude downward from the groove (37). The sponge block can squeeze out the lubricating oil after the limiting pressing piece (3) is pressed on the spoke (9).

7. The press machine for processing automobile parts hub according to claim 5, characterized in that: The groove (37) is annular; The lubricating oil application assembly (4) comprises: An annular smearing member (42) is rotatably disposed in the groove (37); the clearance hole (41) is located on the annular smearing member (42); the annular smearing member (42) is rotatable relative to the limiting pressure member (3) and can apply lubricating oil to the spoke (9).

8. The press machine for processing automobile parts hub according to claim 7, characterized in that: A sliding hole (32) is provided in the middle of the position-limiting pressing piece (3), and a sliding rod (23) is provided at the bottom of the punch head (2). The sliding rod (23) passes through the sliding hole (32) and is slidably matched with the sliding hole (32); A rotation driving guide groove (24) is provided on the side wall of the slide rod (23), a driving hole (33) connected to the groove (37) is provided on the inner wall of the slide hole (32), a driving rod (34) is provided in the driving hole (33), one end of the driving rod (34) is connected to the annular smear member (42), and the other end extends into the rotation driving guide groove (24), and the rotation driving guide groove (24) is configured to drive the driving rod (34) to reciprocate along a circle after the limit pressure member (3) slides, so as to drive the annular smear member (42) to rotate.

9. A press machine for processing automobile parts hubs according to claim 8, characterized in that: The annular smearing member (42) has a lubricating oil cavity (43) therein, the bottom of the annular smearing member (42) has a flexible smearing member (44), and the bottom wall of the lubricating oil cavity (43) is provided with an oil outlet hole (45) for supplying oil to the flexible smearing member (44).

10. A press machine for processing automobile parts hubs according to claim 9, characterized in that: The driving rod (34) has a channel (35) in communication with the lubricating oil chamber (43) therein. The driving rod (34) is connected to an inflation component (36) for inflating air into the channel (35). The inflation component (36) is located in the rotating driving guide groove (24). When the punch head (2) moves downward relative to the limiting pressure piece (3), the inflation component (36) can abut against the inner wall of the rotating driving guide groove (24) to inflate air into the lubricating oil chamber (43) and enable the oil outlet hole (45) to discharge oil.

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