Combined type cold extrusion bevel gear tool
By designing a combined cold extrusion bevel gear tooling, accurate positioning is achieved by matching the guide grooves of the guide post and the positioning plate. This solves the problem of needing to replace the entire tooling after wear, improves the accuracy of cold extrusion, and reduces maintenance costs.
Patent Information
- Application Number
- CN202422597423.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-27
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-27
AI Technical Summary
Existing cold extrusion bevel gear tooling requires complete replacement after wear, resulting in high maintenance costs. Furthermore, the lack of a positioning mechanism leads to insufficient accuracy in cold extrusion and may cause errors such as tooth jamming.
It adopts a modular design, including components such as an upper base plate, an upper fixed plate, a punch fixed plate, guide pillars, a punch, a lower fixed plate, a positioning plate, and a positioning block. The guide grooves of the guide pillars and the positioning plate are matched to achieve accurate positioning of the upper and lower dies, allowing partial replacement to reduce wear and deformation.
It improves the accuracy of cold extrusion, reduces tooth error, and lowers maintenance and replacement costs by partial replacement, thus extending tooling life.
Smart Images
Figure CN223543741U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cold extrusion forming technology, specifically a combined cold extrusion bevel gear tooling. Background Technology
[0002] Existing cold extrusion bevel gear tooling is an integrated structure, which will wear out during use. Once the tooling wears out, it must be replaced as a whole, which is costly to maintain and replace. In addition, existing tooling lacks a positioning mechanism for the product, resulting in insufficient accuracy in cold extrusion. The tooth jamming part produced by cold extrusion may have a certain error. Therefore, a combined cold extrusion bevel gear tooling is proposed to address the above problems. Utility Model Content
[0003] The purpose of this utility model is to provide a combined cold extrusion bevel gear tooling to solve the problems of existing cold extrusion bevel gear tooling which must be completely replaced once the tooling is worn, resulting in high maintenance and replacement costs, and the lack of positioning mechanism for the product in existing tooling, which may cause certain errors in the tooth jamming part generated by cold extrusion.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A combined cold extrusion tapered gear tooling includes an upper base plate and a lower base plate. An upper fixing plate is bolted to the bottom of the upper base plate, and a punch fixing plate is bolted to the bottom of the upper fixing plate. Guide posts are fixedly connected to the front and rear halves of the bottom of the punch fixing plate, and a punch is fixedly connected to the middle of the bottom of the punch fixing plate. A lower fixing plate is bolted to the top of the lower base plate, and a positioning plate is bolted to the top of the lower fixing plate. Pins are fixedly connected to the front and rear halves of the bottom of the positioning plate, and a positioning block is bolted to the right half of the top of the lower fixing plate.
[0006] Preferably, both the upper base plate and the upper fixing plate are provided with multiple bolt connection holes at corresponding positions, and both the upper fixing plate and the punch fixing plate are provided with multiple bolt connection holes at corresponding positions.
[0007] Preferably, the lower side of the punch fixing plate is provided with a large-head cavity, and the upper side of the positioning plate is provided with a large-head cavity, and the large-head cavities of the punch fixing plate and the positioning plate are matched with each other.
[0008] Preferably, the guide posts are all cylindrical blocks, and the front and rear halves of the lower fixing plate and the positioning plate are provided with vertically penetrating cylindrical guide grooves, and the guide posts and the guide grooves of the lower fixing plate and the positioning plate are matched with each other.
[0009] Preferably, the punch has a cylindrical structure, and the lower fixing plate and the positioning plate are each provided with a vertically penetrating cylindrical receiving groove directly below the punch. The lower bottom plate is provided with a cylindrical groove directly below the punch. The diameter of the receiving groove of the lower fixing plate, the receiving groove of the positioning plate, and the groove of the lower bottom plate are all larger than the diameter of the punch.
[0010] Preferably, the lower base plate, the lower fixing plate, and the positioning plate are all provided with multiple bolt connection holes corresponding to the positions, the pins are all cylindrical blocks, and the front half and the rear half of the lower fixing plate are provided with cylindrical pin grooves, and the pins and the pin grooves of the lower fixing plate are matched with each other.
[0011] Preferably, the right half of the lower fixing plate and the lower side of the positioning block are provided with corresponding bolt connection holes, and the positioning block is a cylindrical structure.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] In this invention, the upper and lower dies of the device are matched with each other through the guide grooves of the guide post, the lower fixed plate, and the positioning plate, by means of a punch fixing plate, guide post, punch, positioning plate, pin, and positioning block. The guide grooves of the guide post, the lower fixed plate, and the positioning plate adopt a clearance fit, which can ensure the accuracy of cold extrusion tapered teeth and greatly reduce the error of the tooth jamming part caused by cold extrusion. Moreover, this split assembly method can select different materials according to the stress conditions of different parts, which can effectively reduce the wear and deformation of the tooling and increase the tooling life. If a part of the tooling is worn, it can be replaced. Its maintenance and replacement are relatively simple and the replacement cost is low. Attached Figure Description
[0014] Figure 1 This is a top view of the overall structure of this utility model;
[0015] Figure 2 This is a front cross-sectional view of the overall structure of this utility model;
[0016] Figure 3 This is a right-hand cross-sectional view of the overall structure of this utility model.
[0017] In the diagram: 1. Upper base plate; 2. Upper fixing plate; 3. Punch fixing plate; 4. Guide post; 5. Punch; 6. Lower base plate; 7. Lower fixing plate; 8. Positioning plate; 9. Pin; 10. Positioning block. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.
[0020] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0021] Please see Figure 1-3 This utility model provides a technical solution:
[0022] A combined cold extrusion tapered gear tooling includes an upper base plate 1 and a lower base plate 6. An upper fixing plate 2 is bolted to the bottom of the upper base plate 1, and a punch fixing plate 3 is bolted to the bottom of the upper fixing plate 2. Guide posts 4 are fixedly connected to the bottom front and rear halves of the punch fixing plate 3, and a punch 5 is fixedly connected to the middle position of the bottom of the punch fixing plate 3. A lower fixing plate 7 is bolted to the top of the lower base plate 6, and a positioning plate 8 is bolted to the top of the lower fixing plate 7. Pins 9 are fixedly connected to the bottom front and rear halves of the positioning plate 8, and a positioning block 10 is bolted to the top right half of the lower fixing plate 7.
[0023] Both the upper base plate 1 and the upper fixing plate 2 have multiple bolt holes at corresponding positions. Both the upper fixing plate 2 and the punch fixing plate 3 have multiple bolt holes at corresponding positions. The guide post 4 and the punch 5 can be fixed via the punch fixing plate 3. A large-head cavity is located on the lower side of the punch fixing plate 3, and a large-head cavity is located on the upper side of the positioning plate 8. The large-head cavities of the punch fixing plate 3 and the positioning plate 8 match each other, allowing for accurate positioning of the large head of the product. The guide posts 4 are all cylindrical blocks. The front and rear halves of the lower fixing plate 7 and the positioning plate 8 each have vertically penetrating cylindrical guide grooves. The guide posts 4 match the guide grooves of the lower fixing plate 7 and the positioning plate 8, allowing for accurate positioning and vertical downward movement of the punch 5 via the guide posts 4. The punch 5 has a cylindrical structure, and the lower fixing plate 7 and the positioning plate 8 are positioned directly opposite the punch 5. Each part has a vertically penetrating cylindrical receiving groove at the bottom. The bottom plate 6 has a cylindrical groove directly below the punch 5. The diameters of the receiving grooves of the bottom fixing plate 7, the positioning plate 8, and the bottom plate 6 are all larger than the diameter of the punch 5. The debris generated by the cold extrusion of the punch 5 can be collected by the grooves of the bottom plate 6. The bottom plate 6, the bottom fixing plate 7, and the positioning plate 8 all have multiple bolt connection holes corresponding to their positions. The pins 9 are all cylindrical blocks. The front and rear halves of the bottom fixing plate 7 have cylindrical pin grooves. The pins 9 and the pin grooves of the bottom fixing plate 7 match each other, and the positioning plate 8 and the bottom fixing plate 7 can be quickly aligned by the pins 9. The right half of the bottom fixing plate 7 and the lower side of the positioning block 10 both have corresponding bolt connection holes. The positioning block 10 has a cylindrical structure, and the small end of the product can be fixed by the positioning block 10.
[0024] Workflow: This device is used for gear extrusion processing of products. The left half of the product has a large end to be extruded, and the right half has a small end with a through hole. This device can extrude a toothed part inside the large end of the product. The upper base plate 1, upper fixed plate 2, punch fixing plate 3, guide post 4, and punch 5 constitute the upper die. The lower base plate 6, lower fixed plate 7, positioning plate 8, pin 9, and positioning block 10 constitute the lower die. Before use, the upper and lower dies of the device should be assembled. When using the device, first place the lower base plate 6 on the worktable, then place the product on the positioning plate 8, ensuring the large end of the product is inside the large end cavity of the positioning plate 8 and the small end is fitted outside the positioning block 10, allowing for precise product placement. Next, place the upper base plate 1 above the product and move it downwards, causing the guide post 4 to insert into the guide grooves of the lower fixed plate 7 and positioning plate 8, thus positioning the punch fixing plate 3 and punch 5, ensuring the punch 5 is accurately inserted into the product. Cold extrusion is performed on the inner side of the large end. The punch 5 moves down into the receiving groove of the lower fixed plate 7 and the positioning plate 8. The debris generated by cold extrusion falls into the groove of the lower base plate 6. After the bottom of the guide post 4 contacts the lower base plate 6, the punch 5 can no longer move down. At this time, the cold extrusion is completed and the product processing is completed. The upper and lower dies of this device are matched with each other through the guide post 4 and the guide groove of the lower fixed plate 7 and the positioning plate 8. The guide post 4 and the guide groove of the lower fixed plate 7 and the positioning plate 8 adopt a clearance fit, which can ensure the accuracy of the cold extrusion tapered teeth and greatly reduce the error of the tooth jamming part generated by cold extrusion. Moreover, this split assembly method can select different materials according to the stress conditions of different parts (such as using 40Cr for the punch 5, whose hardness can reach HRC50-65, which can well meet the load of the cold extrusion of the punch 5 and prevent the punch 5 from cracking and deforming). It can effectively reduce the wear and deformation of the tooling and increase the tooling life. If a part of the tooling is worn, it can be replaced. Its maintenance and replacement are relatively simple and the replacement cost is low.
[0025] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.
[0026] 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 combined cold extrusion bevel gear tooling, comprising an upper base plate (1) and a lower base plate (6), characterized in that: The bottom of the upper base plate (1) is bolted to an upper fixing plate (2), and the bottom of the upper fixing plate (2) is bolted to a punch fixing plate (3). Guide posts (4) are fixedly connected to the front and rear halves of the bottom of the punch fixing plate (3). A punch (5) is fixedly connected to the middle of the bottom of the punch fixing plate (3). The top of the lower base plate (6) is bolted to a lower fixing plate (7), and the top of the lower fixing plate (7) is bolted to a positioning plate (8). The front and rear halves of the bottom of the positioning plate (8) are bolted to... The rear half is fixedly connected with pins (9), and the top right half of the lower fixing plate (7) is bolted with a positioning block (10). The punch (5) is a cylindrical structure. The lower fixing plate (7) and the positioning plate (8) are provided with a vertically penetrating cylindrical receiving groove directly below the punch (5). The lower bottom plate (6) is provided with a cylindrical groove directly below the punch (5). The diameter of the receiving groove of the lower fixing plate (7), the receiving groove of the positioning plate (8), and the groove of the lower bottom plate (6) are all larger than the diameter of the punch (5).
2. The combined cold extrusion bevel gear tooling according to claim 1, characterized in that: The upper base plate (1) and the upper fixing plate (2) are both provided with multiple bolt connection holes at corresponding positions, and the upper fixing plate (2) and the punch fixing plate (3) are both provided with multiple bolt connection holes at corresponding positions.
3. The combined cold extrusion bevel gear tooling according to claim 1, characterized in that: The punch fixing plate (3) has a large head cavity on its lower side and the positioning plate (8) has a large head cavity on its upper side. The large head cavities of the punch fixing plate (3) and the positioning plate (8) match each other.
4. The combined cold extrusion bevel gear tooling according to claim 1, characterized in that: The guide posts (4) are all cylindrical blocks. The front and rear halves of the lower fixing plate (7) and the positioning plate (8) are provided with vertically penetrating cylindrical guide grooves. The guide grooves of the guide posts (4), the lower fixing plate (7), and the positioning plate (8) are matched with each other.
5. A combined cold extrusion bevel gear tooling according to claim 1, characterized in that: The lower base plate (6), the lower fixing plate (7) and the positioning plate (8) are all provided with multiple bolt connection holes corresponding to the positions. The pins (9) are all cylindrical blocks. The front half and the rear half of the lower fixing plate (7) are provided with cylindrical pin grooves. The pins (9) and the pin grooves of the lower fixing plate (7) match each other.
6. A combined cold extrusion bevel gear tooling according to claim 1, characterized in that: The right half of the lower fixing plate (7) and the lower side of the positioning block (10) are provided with bolt connection holes corresponding to the position. The positioning block (10) is a cylindrical structure.