Punch forming method of clutch hub

Abstract

The invention discloses a punch forming method of a clutch hub, a punch forming device of the clutch hub is used for carrying out swing extrusion punch forming on a hub piece, the punch forming device of the clutch hub comprises a downward pressing mechanism, a swing extrusion mechanism and a material supporting mechanism which are correspondingly arranged, and the swing extrusion mechanism and the material supporting mechanism are both arranged below the swing extrusion mechanism. A die is installed on the pressing mechanism. The method specifically comprises the steps that a hub piece is placed; the pressing mechanism drives the mold to be pressed and inserted into the inner side of the hub piece; the downward pressing mechanism and the hub piece continue to move downwards, the downward pressing mechanism triggers the swinging and extruding mechanism, the swinging and extruding mechanism rotates towards the direction where the hub piece is located, the hub piece is continuously extruded in the rotating process, and the purpose of swinging, extruding and punching forming is achieved; the pressing mechanism retracts to drive the hub piece to move upwards; and demolding is conducted, and the hub piece obtained after swing extrusion punching forming is obtained. According to the forming method, punch forming is carried out in a swing extrusion mode, the forming method is suitable for non-through type hubs, through type hubs and the like, and the beneficial effects that the working efficiency is improved, and raw material consumption is reduced are further achieved.

Description

Technical Field

[0001] The invention relates to the field of clutch hub production, in particular to a stamping forming method for a clutch hub. Background Art

[0002] The gear clutch hub is an important component of the automatic transmission. Currently, the gear clutch hub is mostly processed and formed by the following methods:

[0003] 1. Casting and auxiliary cutting processing. Compared with other processing methods, this processing method has the disadvantages of large consumables, high cost and long time;

[0004] 2. Spinning, specifically, first drawing the blank, and then spinning the tooth shape on a special machine. Compared with other processing methods, this processing method has the disadvantages of large consumables, high cost, and long processing cycle;

[0005] 3. Swiss GROB special machine gear forming, in the forming process, a pair of teeth are processed, and then the next gear is processed. Compared with other processing methods, this processing method has the disadvantages of long time and low efficiency;

[0006] 4. Stamping and rolling. Although this method has a fast stamping speed and is suitable for the forming of through-type hubs, it is not suitable for the forming of non-through hubs and high-cylinder hubs.

[0007] Therefore, it is very necessary to develop a stamping forming device for a clutch hub that can improve forming efficiency, save materials, and be applicable to through-type hubs and non-through-type hubs. Summary of the invention

[0008] The object of the present invention is to provide a stamping and forming device for a clutch hub to solve one or more of the problems raised in the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the present invention discloses a stamping method for a clutch hub. In the forming method, a stamping device for a clutch hub is used to perform swing extrusion stamping on a hub of a clutch. The stamping device for the clutch hub comprises a pressing mechanism, a swing extrusion mechanism and a supporting mechanism which are arranged correspondingly to each other. The swing extrusion mechanism is arranged below the pressing mechanism, the supporting mechanism is arranged below the swing extrusion mechanism, and a mold is installed on the pressing mechanism. The forming method specifically comprises the following steps:

[0010] Place a hub on the support mechanism corresponding to the mold position;

[0011] The pressing mechanism drives the mold to be pressed down and inserted into the inner side of the hub;

[0012] The pressing mechanism and the hub continue to move downward, and the pressing mechanism triggers the swinging and squeezing mechanism, which rotates toward the direction where the hub is located, and continuously squeezes the hub during the rotation process, thereby achieving the purpose of swinging and squeezing stamping.

[0013] The downward pressing mechanism retracts, driving the hub upward;

[0014] Demoulding to obtain the hub formed by swing extrusion stamping.

[0015] In some embodiments, the swing mechanism is arranged corresponding to the hub, and the swing mechanism includes one or more roller swing block assemblies arranged on the side of the hub, a pressure block arranged corresponding to the roller swing block assembly, and a return mechanism, the return mechanism and the pressure block are one-to-one corresponding to the roller swing block assembly, the top of the pressure block is connected to the pressing mechanism, the roller swing block assembly includes a roller swing block and a connecting arm, one end of the connecting arm is connected to the roller swing block, and the other end of the connecting arm is hinged to the lower die seat. After the roller swing block assembly rotates, it can be reset under the action of the return mechanism.

[0016] In some embodiments, the pressing mechanism includes an upper clamping plate and an upper stripping plate connected to each other, the upper clamping plate is connected to the upper mold base, the bottom of the upper mold base is connected to the upper stripping plate through the first elastic member passing through the upper clamping plate, the pressing block is arranged at the bottom of the upper stripping plate, and the mold is connected to the upper clamping plate through the upper stripping plate.

[0017] In some embodiments, the mold is connected to the upper clamping plate through an auxiliary heightening column, the distance between the upper clamping plate and the upper stripping plate in the vertical direction corresponds to the length of the auxiliary heightening column, the mold adopts a segmented design, and the mold is arranged corresponding to the hub.

[0018] In some embodiments,

[0019] The pressing mechanism further includes a guide column and / or a pull rod.

[0020] The guide column passes through the upper die seat, the upper clamping plate and the upper stripping plate. The upper die seat, the upper clamping plate and the upper stripping plate can all run along the guide column. The bottom of the guide column is inserted into the lower die seat. The setting of the guide column can guide the operation of one or more of the upper die seat, the upper clamping plate and the upper stripping plate, thereby ensuring the stability of the clutch hub stamping forming device during application.

[0021] The pull rod is T-shaped, and the bottom of the pull rod passes through the upper clamping plate and is connected to the upper stripping plate. A sliding groove is set on the upper mold base corresponding to the guide column, and the top of the pull rod is embedded in the sliding groove. The top of the pull rod can move up and down in the sliding groove. The setting of the pull rod can not only guide the operation of the upper stripping plate, but also limit the operation of the upper stripping plate, so as to further ensure the stability of the stamping forming device of the clutch hub during the application process.

[0022] In some embodiments, the supporting mechanism includes a supporting block and a movable plate, the bottom of the movable plate is connected to the lower mold base through a second elastic member, the bottom of the supporting block is connected to the lower mold base, the movable plate is arranged corresponding to the supporting block, the supporting block is arranged corresponding to the mold, and the swinging mechanism is arranged corresponding to the movable plate.

[0023] In some embodiments, a lower top block is provided on the movable plate corresponding to the swinging and squeezing mechanism, and a guide ring is provided on the movable plate corresponding to the supporting block. The corresponding setting of the guide ring and the supporting block can provide a guiding effect for the operation of the movable plate.

[0024] In some embodiments, the supporting block includes a first supporting block and a second supporting block, the first supporting block is arranged above the second supporting block, the gap between the first supporting block and the second supporting block is arranged corresponding to the guide ring, and the setting of the guide ring plays a guiding role for the operation of the first supporting block, an elastic part is embedded in the second supporting block, the top of the elastic part passes through the second supporting block and is connected to the first supporting block, the hub part is placed on the first supporting block, and the setting of the elastic part facilitates the removal of the hub part later.

[0025] In some embodiments, a guide rod is provided on the lower mold base, and the guide rod passes through the first supporting block and the second supporting block.

[0026] In some embodiments, an auxiliary installation mechanism for installing a swinging and squeezing mechanism is connected to the lower mold base, and the auxiliary installation mechanism includes a lower pad, a weight block, a roller swing block substrate and a roller swing block cover plate. The lower pad is connected to the lower mold base through a lower heightening plate. The weight block, the roller swing block substrate and the roller swing block cover plate are arranged on the lower pad. The other end of the connecting arm is hinged to the lower pad through an installation axis. The connecting arm and the weight block are arranged on both sides of the roller swing block substrate. The top of the roller swing block substrate is connected to the roller swing block cover plate, and the position of the roller swing block cover plate corresponds to the position of the installation axis.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the stamping forming method of the clutch hub can be stamped by swinging and extruding, the stamping forming efficiency is high, and the teeth on the clutch hub can be formed at one time; a long-toothed clutch hub can be formed; compared with the existing spinning forming, i.e., casting machining, the stamping forming device of the clutch hub is more efficient and saves more materials during molding; compared with the existing stamping and rolling forming method, the stamping forming method of the clutch hub can be convex or concave at a certain section of the tooth surface during molding to continue to reinforce the long-toothed hub. In addition, during operation, the stamping forming method of the clutch hub can also realize the molding of non-through hubs and through hubs by adjusting the downward pressure of the upper pressure plate, etc. as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1It is a structural schematic diagram of a stamping forming device of a clutch hub in some embodiments of the present invention;

[0029] Figure 2 In some embodiments of the present invention, a stamping forming device is used for the clutch hub. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention discloses a clutch hub stamping forming method, which uses a clutch hub stamping forming device to perform swing extrusion stamping forming on the clutch hub, combined with Figure 1 The content shown in the figure shows that the stamping forming device of the clutch hub includes a pressing mechanism, a swinging mechanism and a supporting mechanism which are arranged corresponding to each other, the swinging mechanism is arranged below the pressing mechanism, the supporting mechanism is arranged below the swinging mechanism, and a mold is installed on the pressing mechanism. The forming method specifically includes the following steps:

[0032] Place a hub on the support mechanism corresponding to the mold position;

[0033] The pressing mechanism drives the mold to be pressed down and inserted into the inner side of the hub;

[0034] The pressing mechanism and the hub continue to move downward, and the pressing mechanism triggers the swinging and squeezing mechanism, which rotates toward the direction where the hub is located, and continuously squeezes the hub during the rotation process, thereby achieving the purpose of swinging and squeezing stamping.

[0035] The downward pressing mechanism retracts, driving the hub upward;

[0036] Demoulding to obtain the hub formed by swing extrusion stamping.

[0037] The swing mechanism is arranged corresponding to the hub, and includes one or more roller swing block assemblies arranged on the side of the hub, a pressure block 8 arranged corresponding to the roller swing block assembly, and a return mechanism. The return mechanism and the pressure block 8 correspond to the roller swing block assembly one by one. The top of the pressure block 8 is connected to the pressing mechanism. The roller swing block assembly includes a roller swing block 18 and a connecting arm 19. One end of the connecting arm 19 is connected to the roller swing block 18, and the other end of the connecting arm 19 is hinged to the lower die seat 28. The shape of the roller swing block 18, the number of swing mechanisms and the setting position can be set as required. After the roller swing block assembly rotates, it can be reset under the action of the return mechanism. The return mechanism can be an existing device such as a torsion spring or a cylinder. Its specific installation mechanism can also be directly implemented by an existing mechanism, so it will not be repeated here.

[0038] The pressing mechanism includes an upper clamping plate 3 and an upper stripping plate 6 which are connected to each other. The bottom of the upper mold base 1 is connected to the upper stripping plate 6 through the upper clamping plate 3 via a first elastic member 31 (such as a nitrogen spring). The upper clamping plate 3 can be fixedly connected to the upper mold base 1 through existing parts such as equal height columns. The pressing block 8 is arranged at the bottom of the upper stripping plate 6, and the mold is connected to the upper clamping plate 3 through the upper stripping plate 6.

[0039] In some specific implementations, the mold is connected to the upper clamping plate 3 through an auxiliary heightening column 7. The distance between the upper clamping plate 3 and the upper stripping plate 6 in the vertical direction corresponds to the length of the auxiliary heightening column 7. The mold adopts a segmented design, and the mold and the hub are arranged correspondingly. The mold can be composed of a first mold 9, a second mold 10 and a third mold 11 that are coaxially arranged and connected in sequence from top to bottom.

[0040] In some specific implementations, the pressing mechanism further includes a guide column 13 and / or a pull rod 12.

[0041] The guide post 13 passes through the upper die base 1, the upper clamping plate 3 and the upper stripping plate 6. The upper die base 1, the upper clamping plate 3 and the upper stripping plate 6 can all run along the guide post 13. A through hole can be set on the upper die base 1 corresponding to the guide post 13. The top of the guide post 13 can move up and down in the through hole, and the bottom of the guide post 13 is inserted into the lower die base 28.

[0042] The pull rod 12 is T-shaped, and the bottom of the pull rod 12 passes through the upper clamping plate 3 and is connected to the upper stripping plate 6. A slide groove is set on the upper mold base 1 corresponding to the guide column 13. The slide groove and the guide column 13 are set parallel to each other. The top of the pull rod 12 is embedded in the slide groove, and the top of the pull rod 12 can move up and down in the slide groove. The setting of the pull rod 12 can not only guide the operation of the upper stripping plate 6, but also limit the operation of the upper stripping plate 6.

[0043] The supporting mechanism includes a supporting block and a movable plate 22. The bottom of the movable plate 22 is connected to the lower die base 28 through a second elastic member 30 (such as a nitrogen spring). The bottom of the supporting block is connected to the lower die base 28. The movable plate 22 is arranged correspondingly to the supporting block, the supporting block is arranged correspondingly to the mold, and the swinging mechanism is arranged correspondingly to the movable plate 22.

[0044] In some specific implementations, a lower top block 23 is provided on the movable plate 22 corresponding to the swinging and squeezing mechanism, and a guide ring 26 is provided on the movable plate 22 corresponding to the supporting block.

[0045] The support block includes a first support block 24 and a second support block 25. The first support block 24 is arranged above the second support block 25. The gap between the first support block 24 and the second support block 25 is arranged corresponding to the guide ring 26. An elastic member is embedded in the second support block 25. The top of the elastic member passes through the second support block 25 and is connected to the first support block 24. The hub member is placed on the first support block 24. The elastic member described herein may be a return spring.

[0046] In some specific implementations, a guide rod 27 is provided on the lower mold base 28, and the guide rod 27 passes through the first supporting block 24 and the second supporting block 25. The guide rod 27 can also be arranged between the supporting block, the movable plate 22, and the guide ring 26 to further guide the supporting block, the movable plate 22, and the guide ring 26.

[0047] In some specific implementations, the lower die base 28 is connected with an auxiliary installation mechanism for installing the swinging and squeezing mechanism, and the auxiliary installation mechanism includes a lower pad 17, a weight block 29, a roller swing block substrate 16, and a roller swing block cover plate 14. The lower pad 17 is connected to the lower die base 28 through a lower heightening plate 21. The weight block 29, the roller swing block substrate 16, and the roller swing block cover plate 14 are arranged on the lower pad 17. The other end of the connecting arm 19 is hinged to the lower pad 17 through the installation shaft 20. The connecting arm 19 and the weight block 29 are arranged on both sides of the roller swing block substrate 16. The top of the roller swing block substrate 16 is connected to the roller swing block cover plate 14, so as to protect the hinge between the connecting arm 19 and the lower pad 17, and also limit the swing of the roller swing block 18. The position of the roller swing block cover plate 14 corresponds to the position of the installation shaft 20.

[0048] By using the above-mentioned stamping forming device for the clutch hub, the upper die seat 1 and the lower die seat 28 are arranged on the punch head at the upper part of the punch press and the working table at the lower part, respectively. The stamping forming method of the clutch hub may specifically include the following steps:

[0049] S1. Place the product on the support block;

[0050] S2, the punch press drives the upper die base 1 and the pressing mechanism connected to the upper die base 1 downward;

[0051] S3, the mold first enters the product (hub). Generally, when the mold completely enters the product, the bottom of the pressing block 8 is in contact with the swinging mechanism;

[0052] S4, the mold pressing mechanism continues to move downward, and under the action of the pressing block 8, the roller swing block 18 and the connecting arm 19 rotate around the mounting shaft 20, and the surface tooth profile of the roller swing block 18 rubs against the surface of the product and the tooth profile of the mold, squeezing inside and outside to produce a tooth profile on the product until the roller swing block 18 in the swinging mechanism is pressed to the bottom;

[0053] S5, the punch press drives the upper die base 1 and the pressing mechanism connected to the upper die base 1 to move upward, at this time the die will continue to move upward along with the upper clamping plate 3, and the upper stripping plate 6 will not move upward under the action of the first elastic member 31, thereby preventing the product from moving upward along with the die, thereby playing the role of demoulding the product;

[0054] S6, the punch press drives the upper die base 1 and the pressing mechanism connected to the upper die base 1 to continue to move upward, and the upper stripping plate 6 starts to move upward accordingly. At this time, the force of the pressing block 8 on the swinging mechanism gradually weakens, and the swinging mechanism moves upward together with the product under the drive of the return mechanism;

[0055] S7. After the swing mechanism is restricted by the roller swing block cover 14 (the return adjustment area of ​​the return mechanism can also be set in advance. After the swing mechanism exceeds this area, the return mechanism can no longer generate the force to control the rotation of the roller swing block 18 and the connecting arm 19) and no longer rotates upward, the first support block 24 continues to move upward to the initial position with the product under the action of the elastic part. At this time, the product will protrude from the swing mechanism, which is convenient for taking out the formed product.

[0056] The above undisclosed matters can all be implemented using existing technologies, so they will not be elaborated here.

[0057] The clutch hub can be formed by the stamping method as described above. Figure 2 The hub 40 shown includes teeth 401 , first reinforcing ribs 402 , and second reinforcing ribs 403 .

[0058] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0059] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected" and "connected" 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0060] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A stamping method for a clutch hub, characterized in that: In the forming method, a clutch hub stamping forming device is used to perform swing extrusion stamping forming on the clutch hub. The clutch hub stamping forming device includes a pressing mechanism, a swing extrusion mechanism and a supporting mechanism which are arranged correspondingly to each other. The swing extrusion mechanism is arranged below the pressing mechanism, and the supporting mechanism is arranged below the swing extrusion mechanism. A mold is installed on the pressing mechanism. The forming method specifically includes the following steps: Place a hub on the support mechanism corresponding to the mold position; The pressing mechanism drives the mold to be pressed down and inserted into the inner side of the hub; The pressing mechanism and the hub continue to move downward, and the pressing mechanism triggers the swinging and squeezing mechanism, which rotates toward the direction where the hub is located, and continuously squeezes the hub during the rotation process, thereby achieving the purpose of swinging and squeezing stamping. The downward pressing mechanism retracts, driving the hub upward; Demoulding to obtain the hub formed by swing extrusion stamping.

2. A stamping method for a clutch hub according to claim 1, characterized in that: The swinging and squeezing mechanism is arranged corresponding to the hub component, and the swinging and squeezing mechanism includes one or more roller swing block assemblies arranged on the side of the hub component, a pressure block corresponding to the roller swing block assembly, and a return mechanism. The return mechanism and the pressure block correspond to the roller swing block assembly one by one. The top of the pressure block is connected to the pressing mechanism. The roller swing block assembly includes a roller swing block and a connecting arm. One side end of the connecting arm is connected to the roller swing block, and the other side end of the connecting arm is hinged to the lower mold base.

3. A stamping method for a clutch hub according to claim 2, characterized in that: The pressing mechanism includes an upper clamping plate and an upper stripping plate connected to each other, the upper clamping plate is connected to the upper die base, the bottom of the upper die base is connected to the upper stripping plate through the first elastic member passing through the upper clamping plate, the pressing block is arranged at the bottom of the upper stripping plate, and the mold is connected to the upper clamping plate through the upper stripping plate.

4. A stamping method for a clutch hub according to claim 3, characterized in that: The mold is connected to the upper clamping plate through an auxiliary heightening column. The distance between the upper clamping plate and the upper stripping plate in the vertical direction corresponds to the length of the auxiliary heightening column. The mold adopts a segmented design and is arranged corresponding to the hub.

5. The stamping method of a clutch hub according to claim 3, characterized in that: The pressing mechanism further includes a guide column and / or a pull rod. The guide post passes through the upper die seat, the upper clamping plate and the upper stripping plate. The upper die seat, the upper clamping plate and the upper stripping plate can all run along the guide post. The bottom of the guide post is inserted into the lower die seat. The pull rod is T-shaped, the bottom of the pull rod passes through the upper clamping plate and is connected to the upper stripping plate, a slide groove is arranged on the upper die seat corresponding to the guide column, the top of the pull rod is embedded in the slide groove, and the top of the pull rod can move up and down in the slide groove.

6. The stamping method of a clutch hub according to claim 2, characterized in that: The supporting mechanism includes a supporting block and a movable plate, the bottom of the movable plate is connected to the lower die base through a second elastic member, the bottom of the supporting block is connected to the lower die base, the movable plate is arranged corresponding to the supporting block, the supporting block is arranged corresponding to the mold, and the swinging mechanism is arranged corresponding to the movable plate.

7. A clutch stamping method according to claim 6, characterized in that: The movable plate is provided with a lower top block corresponding to the swinging and squeezing mechanism, and the movable plate is provided with a guide ring corresponding to the supporting block.

8. The stamping method of a clutch hub according to claim 7, characterized in that: The supporting block includes a first supporting block and a second supporting block, the first supporting block is arranged above the second supporting block, the gap between the first supporting block and the second supporting block is arranged corresponding to the guide ring, an elastic part is embedded in the second supporting block, the top of the elastic part passes through the second supporting block and is connected to the first supporting block, and the hub part is placed on the first supporting block.

9. A stamping method for a clutch hub according to claim 8, characterized in that: The lower die base is provided with a guide rod, which passes through the first supporting block and the second supporting block.

10. A stamping method for a clutch hub according to any one of claims 2 to 9, characterized in that: An auxiliary installation mechanism for installing a swinging and squeezing mechanism is connected to the lower die base, the auxiliary installation mechanism includes a lower pad, a weight block, a roller swing block substrate and a roller swing block cover plate, the lower pad is connected to the lower die base through a lower heightening plate, the weight block, the roller swing block substrate and the roller swing block cover plate are arranged on the lower pad, the other end of the connecting arm is hinged to the lower pad through an installation shaft, the connecting arm and the weight block are arranged on both sides of the roller swing block substrate, the top of the roller swing block substrate is connected to the roller swing block cover plate, and the position of the roller swing block cover plate corresponds to the position of the installation shaft.

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