Tooth form forging die for automobile differential lock meshing sleeve
By introducing an elastic pad, guide rod, and damping spring structure into the differential lock engagement sleeve tooth profile forging die, the vibration problem during die stamping was solved, extending the die's service life and improving its practicality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XIANJI AUTO PARTS CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-24
AI Technical Summary
The existing differential lock engagement sleeve tooth forging die lacks vibration damping effect during stamping, resulting in large vibrations and shortening the die's service life.
A mold structure including an elastic pad, a guide rod, a stop rod, and a damping spring was designed to absorb the vibration during stamping through elastic deformation and damping buffer.
It effectively reduces stamping vibration, reduces mold wear, extends mold life, and improves practicality.
Smart Images

Figure CN224157703U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of automotive differential lock engagement sleeves, specifically to a forging die for the tooth profile of an automotive differential lock engagement sleeve. Background Technology
[0002] The differential lock engagement sleeve is used when a car gets stuck on a muddy or slippery road surface. The teeth of the engagement sleeve mesh with the teeth of a matching component, locking the differential and preventing the wheels from slipping, thus allowing the vehicle to drive off the road.
[0003] The prior art document, "A Forging Die for a Differential Lock Engaging Sleeve of an Automobile", patent number (CN217858620U), describes a device that saves materials, has high production efficiency, produces high-quality forgings, saves energy, and has high forging precision by fastening screws that tightly connect the concave upper die base, upper die pad, upper die fixing ring, and convex upper die together, as well as ejector rod and ejector mandrel.
[0004] However, the differential lock engagement sleeve tooth forging die does not have a good shock absorption effect during use, resulting in greater vibration during stamping and forming, which can easily accelerate the wear of the die and cause inconvenience to users, thus failing to meet their needs. Utility Model Content
[0005] The purpose of this utility model is to provide a forging die for the tooth profile of an automotive differential lock engagement sleeve, in order to solve the problem mentioned in the background art that the forging die for the tooth profile of the differential lock engagement sleeve does not have a good shock absorption effect during use, resulting in greater vibration during stamping and forming, which easily accelerates the wear of the die, causes inconvenience to users, and can no longer meet the needs of users.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a forging die for a gear tooth of an automotive differential lock engagement sleeve, comprising an upper module and a lower module. Elastic pads are fixedly arranged on both sides of the top of the lower module. A pressure-bearing mold is fixedly arranged on the top of the elastic pads. A through groove is formed at the bottom of the pressure-bearing mold. A guide rod is fixedly arranged on the top of the lower module. A connecting ring is fixedly arranged inside the through groove. A stop rod is arranged on both sides of the connecting ring. A slider is fixedly arranged on the front and rear surfaces of the stop rod. A sliding groove is formed on the front and rear surfaces of the connecting ring. Damping springs are fixedly arranged on the top and bottom sides of the two stop rods facing away from each other.
[0007] Furthermore, a stamping block is fixedly installed at the bottom of the upper module.
[0008] Furthermore, a forming groove is provided at the middle position of the top of the pressure mold.
[0009] Furthermore, the number of through slots is several, and each pair of through slots is designed to be equidistant from each other.
[0010] Furthermore, the top of the guide rod contacts the abutment rod, and the guide rod and the through groove are designed to correspond one-to-one. The top and bottom of the abutment rod both extend to the outside of the connecting ring.
[0011] Furthermore, the opposing sides of the two sliders extend into the interior of the groove and contact the inner wall of the groove, and the sliders and the groove are slidably connected.
[0012] Furthermore, the opposite sides of the two damping springs are fixedly connected to the inner wall of the through groove.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This automotive differential lock engagement sleeve tooth forging die, by incorporating elastic pads, guide rods, stop rods, and damping springs, can absorb and reduce the vibration generated during stamping and die closing, thereby reducing wear on the die, extending its service life, providing convenience to users, improving the practicality of the device, and meeting user needs. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the structure of this utility model;
[0017] Figure 3 for Figure 2 A magnified view of part A in the diagram;
[0018] Figure 4 This is a schematic diagram of the connecting ring of this utility model.
[0019] In the diagram: 1. Upper module; 2. Lower module; 3. Elastic pad; 4. Pressure mold; 5. Through groove; 6. Guide rod; 7. Connecting ring; 8. Abutment rod; 9. Slider; 10. Slide groove; 11. Damping spring; 12. Stamping block. Detailed Implementation
[0020] The utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are only descriptive and are not limiting of the scope of protection of this utility model.
[0021] Please see Figure 1-4This utility model provides a technical solution: a forging die for a toothed engagement sleeve of an automotive differential lock, comprising an upper module 1 and a lower module 2. The upper module 1 and the lower module 2 cooperate with each other to stamp and form the product. Elastic pads 3 are fixedly installed on both sides of the top of the lower module 2, providing elasticity between the lower module 2 and the pressure-bearing die 4. The pressure-bearing die 4 is fixedly installed on top of the elastic pads 3, providing pressure resistance. A through groove 5 is provided at the bottom of the pressure-bearing die 4 for mounting corresponding components. A guide rod 6 is fixedly installed on the top of the lower module 2. The connecting ring 7 is fixedly installed inside the through groove 5, which can drive the abutment 8 to move. The connecting ring 7 is used to set the corresponding components. Abutment 8 is set on both sides inside the connecting ring 7. The abutment 8 can drive the damping spring 11 for buffering. The front and rear surfaces of the abutment 8 are fixedly installed with sliders 9. The sliders 9 can drive the abutment 8 to slide. The front and rear surfaces of the connecting ring 7 are both provided with sliding grooves 10, which leave sliding space for the sliders 9. The top and bottom positions of the two abutment 8 on opposite sides are fixedly installed with damping springs 11, which can play the role of energy absorption and buffering.
[0022] Furthermore, a stamping block 12 is fixedly installed at the bottom of the upper module 1, wherein the stamping block 12 can perform the function of stamping materials.
[0023] Furthermore, a forming groove is provided at the middle position of the top of the pressure mold 4, which is used for stamping and forming.
[0024] Furthermore, the number of through slots 5 is several, and each pair of through slots 5 is designed to be equidistant from each other. The through slots 5 are used to set the corresponding components.
[0025] Furthermore, the top of the guide rod 6 contacts the abutment rod 8, and the guide rod 6 and the through groove 5 are designed to correspond one-to-one. The top and bottom of the abutment rod 8 extend to the outside of the connecting ring 7. The guide rod 6 can drive the abutment rod 8 to move.
[0026] Furthermore, the opposite sides of the two sliders 9 extend into the interior of the groove 10 and contact the inner wall of the groove 10. The sliders 9 and the groove 10 are slidably connected. This design facilitates the movement of the abutment rod 8.
[0027] Furthermore, the opposite sides of the two damping springs 11 are fixedly connected to the inner wall of the through groove 5, wherein the damping springs 11 can play the role of shock absorption and buffering.
[0028] Working principle: When the upper module 1 and lower module 2 are pressed together and generate vibration, the impact force will cause the elastic pad 3 to deform, thereby causing the pressure mold 4 to move down. The downward movement of the pressure mold 4 will cause the components set in the through groove 5 to move down, so that the abutment 8 will come into contact with the guide rod 6. The guide rod 6 will push the two abutment rods 8 to move laterally. The lateral movement of the abutment rods 8 will cause the damping spring 11 to be compressed and buffered, thereby absorbing and reducing the vibration.
[0029] Based on the above work process, we can conclude that:
[0030] This automotive differential lock engagement sleeve tooth forging die, by incorporating an elastic pad 3, a guide rod 6, a stop rod 8, and a damping spring 11, can absorb and reduce the vibration generated during stamping and die closing, thereby reducing wear on the die, extending its service life, providing convenience to users, improving the practicality of the device, and meeting user needs.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A forging die for the tooth profile of an automotive differential lock engagement sleeve, comprising an upper module (1) and a lower module (2), characterized in that: Elastic pads (3) are fixedly installed on both sides of the top of the lower module (2). A pressure mold (4) is fixedly installed on the top of the elastic pads (3). A through groove (5) is opened at the bottom of the pressure mold (4). A guide rod (6) is fixedly installed on the top of the lower module (2). A connecting ring (7) is fixedly installed inside the through groove (5). A stop rod (8) is installed on both sides of the connecting ring (7). A slider (9) is fixedly installed on the front and rear surfaces of the stop rod (8). A sliding groove (10) is opened on the front and rear surfaces of the connecting ring (7). A damping spring (11) is fixedly installed on the top and bottom sides of the two stop rods (8) facing away from each other.
2. The forging die for the gear teeth of an automotive differential lock engagement sleeve according to claim 1, characterized in that: A stamping block (12) is fixedly installed at the bottom of the upper module (1).
3. The forging die for the gear teeth of an automotive differential lock engagement sleeve according to claim 1, characterized in that: A forming groove is provided at the middle position of the top of the pressure mold (4).
4. The forging die for the gear teeth of an automotive differential lock engagement sleeve according to claim 1, characterized in that: The number of through slots (5) is several, and the distance between each pair of through slots (5) is equal.
5. The forging die for the gear teeth of an automotive differential lock engagement sleeve according to claim 1, characterized in that: The top of the guide rod (6) contacts the abutment rod (8), and the guide rod (6) and the through groove (5) are designed to correspond one-to-one. The top and bottom of the abutment rod (8) extend to the outside of the connecting ring (7).
6. The forging die for the gear teeth of an automotive differential lock engagement sleeve according to claim 1, characterized in that: The two sliders (9) extend into the interior of the groove (10) on opposite sides and contact the inner wall of the groove (10), and the sliders (9) and the groove (10) are slidably connected.
7. The forging die for the gear teeth of an automotive differential lock engagement sleeve according to claim 1, characterized in that: The opposite sides of the two damping springs (11) are fixedly connected to the inner wall of the through groove (5).
Citation Information
Patent Citations
Tooth-shaped forging die for meshing sleeve of automobile differential lock
CN217858620U