Gear clamping device

Abstract

The utility model provides a gear clamping device which is used for clamping and fixing a gear, the gear clamping device comprises a chuck, a plurality of positioning assemblies which are uniformly arranged at intervals around the center of the chuck and a clamping jaw assembly which is connected with the positioning assemblies, each positioning assembly comprises a fixing block and a positioning block which is connected with the fixing block, one side of each positioning block is provided with a limiting groove, and the other side of each positioning block is provided with a clamping jaw. The limiting grooves are formed in the radial direction of the chuck. The clamping jaw assembly comprises a clamping jaw body and a clamping pin detachably arranged on the clamping jaw body, a limiting block is arranged on the side, deviating from the clamping pin, of the clamping jaw body, the limiting block is matched with the limiting groove, the clamping jaw body is connected with the positioning block through a plurality of connecting pieces, and the axial direction of the clamping pin is arranged in the radial direction of the chuck. The end, close to the center of the chuck, of the clamping pin is matched with a tooth groove of the gear. The clamping jaw assembly can be positioned and installed on the chuck, the installation precision is improved, only the clamping pin needs to be replaced when abrasion is serious in use, and the use cost and the maintenance workload are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of gear processing technology, and in particular to a gear clamping device. Background Technology

[0002] In the automotive manufacturing industry, gears are key transmission components. The quality and precision of gears play a crucial role in key performance aspects such as power transmission and driving stability. Gear hard turning is an important process for improving gear quality. During gear hard turning, clamping devices are usually used to clamp and fix the gears to ensure high-precision machining.

[0003] Currently, the clamping device commonly used in gear hard turning is generally a three-jaw chuck, which includes a chuck and three jaws on the chuck. Each jaw is directly mounted on the end face of the chuck by mounting bolts, and each jaw has multiple teeth that are adapted to the gear tooth grooves at one end near the center of the chuck. The three jaws and the end face of the chuck together form a clamping space for placing the gear, and the gear is clamped and fixed by the engagement between the multiple teeth on the three jaws and the multiple tooth grooves on the gear.

[0004] However, during assembly, the lack of a positioning structure between the jaws and the chuck makes it difficult to guarantee the installation accuracy of the three jaws on the chuck. This can easily lead to situations where the gear cannot fit into the clamping space, requiring disassembly and reassembly, resulting in low assembly efficiency. Furthermore, during gear hard turning, the multiple teeth on the jaws and the parts of the gear that engage with these teeth are prone to wear, severely affecting the gear's machining accuracy and reducing its performance. In addition, long-term use requires complete disassembly and replacement of the jaws with severely worn teeth, increasing operating costs and maintenance workload. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a gear clamping device, which aims to solve the technical problems of existing three-jaw chucks that cannot guarantee the installation accuracy of the three jaws on the chuck, resulting in low assembly efficiency. Furthermore, during gear hard turning, multiple teeth on the jaws and the parts on the gear that engage with the teeth are easily worn, which seriously affects the gear's machining accuracy and reduces its performance. Moreover, long-term use requires disassembly and replacement of jaws with severely worn teeth, increasing the cost of use and maintenance workload.

[0006] The purpose of this utility model is to provide a gear clamping device for clamping and fixing gears. The gear clamping device includes a chuck, a plurality of positioning components evenly spaced around the center of the chuck, and a jaw assembly connected to the positioning components. The positioning components include a fixing block and a positioning block connected to the fixing block. A limiting groove is provided on one side of the positioning block, and the limiting groove is arranged radially along the chuck.

[0007] The chuck assembly includes a chuck body and a clamping pin detachably disposed on the chuck body. A limiting block is provided on the side of the chuck body opposite to the clamping pin. The limiting block is adapted to the limiting groove. The chuck body is connected to the positioning block through multiple connectors. The axial direction of the clamping pin is arranged along the radial direction of the chuck. The end of the clamping pin near the center of the chuck is adapted to the tooth groove of the gear.

[0008] Compared to existing technologies, the advantages of this gear clamping device are as follows: By setting a positioning component on the chuck, the jaw assembly is positioned and installed on the chuck, effectively improving the installation accuracy and convenience of the jaw assembly. Furthermore, the jaw assembly clamps and fixes the gear using a detachable clamping pin. When wear is severe, only the clamping pin needs to be replaced, eliminating the need to disassemble and replace the entire jaw assembly, significantly reducing usage costs and maintenance workload. Specifically, the positioning component includes a fixing block and a positioning block. A limiting groove is provided on one side of the positioning block. The jaw assembly includes a jaw body and a clamping pin detachably mounted on the jaw body. A limiting block is provided on the side of the jaw body opposite to the clamping pin, and the limiting block is adapted to the limiting groove. In actual assembly, the jaw assembly is fixed on the positioning component through the engagement of the limiting block and the limiting groove, as well as multiple connecting parts, thereby achieving the positioning and installation of the jaw assembly on the chuck.

[0009] In addition, the gear clamping device according to the present invention may also have the following additional technical features:

[0010] Furthermore, the fixing block includes a fixing part and an abutting part located at one end of the fixing part away from the center of the chuck, and the abutting part has an inner arc surface on one side near the center of the chuck.

[0011] Furthermore, the positioning block has a guide groove adapted to the fixing part on the side opposite to the limiting groove, and an outer arc surface is provided at one end of the positioning block along the length direction of the guide groove. The outer arc surface is adapted to the inner arc surface to achieve a tight fit between the positioning block and the fixing block.

[0012] Furthermore, the claw body includes a connecting part and a mounting part integrally connected to the connecting part. The connecting part is provided with a connecting through hole adapted to the connector. The limiting block is provided on the side of the connecting part away from the mounting part. The clamping pin is provided on the end of the mounting part away from the connecting part.

[0013] Furthermore, the mounting portion has a first mounting hole, a second mounting hole communicating with the first mounting hole, and a third mounting hole at one end away from the connecting portion. The central axes of the first mounting hole and the second mounting hole are located on the same horizontal line, and the diameter of the second mounting hole is larger than the diameter of the first mounting hole. The third mounting hole is arranged radially along the first mounting hole. The first mounting hole is used to install the clamping pin.

[0014] Furthermore, the claw assembly also includes a fixing pin, and the second mounting hole is used to install the fixing pin. When the clamping pin is located in the first mounting hole and the fixing pin is located in the second mounting hole, the end face of the fixing pin abuts against the end of the clamping pin.

[0015] Furthermore, the jaw assembly also includes a positioning pin, and the shaft of the clamping pin is provided with a positioning hole adapted to the positioning pin, and the third mounting hole is used to install the positioning pin.

[0016] Furthermore, the connecting element is a connecting bolt.

[0017] Furthermore, the gear clamping device also includes a support assembly, which includes a support block, a limiting post fixed in the middle of the chuck, and a plurality of connecting posts evenly spaced along the circumference of the limiting post. One side of the support block is provided with a limiting hole adapted to the limiting post, and the other side of the support block is provided with a plurality of support posts. The plurality of support posts are evenly arranged around the center of the support block, and the support posts are used to abut against the end face of the gear to support the gear.

[0018] Furthermore, the distance between the support end face of the support column and the surface of the chuck should be less than or equal to the distance between the outer edge of the bottom end of the clamping pin shaft and the surface of the chuck. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the gear clamping device of this utility model;

[0020] Figure 2 This is a schematic diagram of the gear clamping device of this utility model from a first-view perspective;

[0021] Figure 3 This is a schematic diagram of the gear clamping device of this utility model from a second perspective.

[0022] Figure 4 This is a schematic diagram of the jaw body in the gear clamping device of this utility model from a certain perspective;

[0023] Figure 5 This is an exploded view of the gear clamping device of this utility model;

[0024] Figure 6 This is a schematic diagram of one usage state of the gear clamping device of this utility model.

[0025] The above-mentioned figures include the following reference numerals: 10-chuck; 20-positioning component; 21-fixing block; 211-fixing part; 212-abutting part; 213-inner arc surface; 22-positioning block; 221-limiting groove; 222-guide groove; 223-outer arc surface; 30-claw assembly; 31-claw body; 311-connecting part; 312-mounting part; 313-limiting block; 32-clamping pin; 33-fixing pin; 34-positioning pin; 40-connector; 50-support component; 51-support block; 511-support column; 52-limiting column; 53-connecting column; 60-gear.

[0026] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figures 1 to 6The diagram illustrates a gear 60 clamping device according to the present invention, used to clamp and fix a gear 60. The gear 60 clamping device includes a chuck 10, a plurality of positioning components 20 evenly spaced around the center of the chuck 10, and jaw components 30 connected to the positioning components 20. The positioning components 20 position and mount the jaw components 30 on the chuck 10, ensuring the mounting accuracy of the jaw components 30 on the chuck 10. As a specific example, in this embodiment, the chuck 10 is provided with three positioning components 20, which are evenly spaced around the center of the chuck 10. Each positioning component 20 is connected to a jaw component 30, and the three jaw components 30 together form a clamping space for clamping the gear 60.

[0031] As an example, the positioning component 20 includes a fixing block 21 and a positioning block 22 connected to the fixing block 21. A limiting groove 221 is provided on one side of the positioning block 22, and the limiting groove 221 is arranged radially along the chuck 10. In this embodiment, the fixing block 21 is fixed to the chuck 10. The fixing block 21 includes a fixing part 211 and an abutting part 212 located at one end of the fixing part 211 away from the center of the chuck 10. An inner arc surface 213 is provided on the side of the abutting part 212 near the center of the chuck 10. A guide groove 222 adapted to the fixing part 211 is provided on the side of the positioning block 22 away from the limiting groove 221. An outer arc surface 223 is provided at one end of the positioning block 22 along the length direction of the guide groove 222. The outer arc surface 223 is adapted to the inner arc surface 213 to achieve a tight fit between the positioning block 22 and the fixing block 21. More specifically, the fixing block 21 and the positioning block 22 are respectively provided with mounting through holes for installing fasteners. The mounting through holes on the positioning block 22 connect the limiting groove 221 and the guide groove 222 located on both sides of the positioning block 22. In the actual assembly process, the guide groove 222 on the positioning block 22 is engaged with the fixing part 211 of the fixing block 21, and the outer arc surface 223 on the positioning block 22 is tightly fitted with the inner arc surface 213 on the fixing block 21. Then, fasteners such as bolts can be used to pass through the mounting through holes of the positioning block 22 and the fixing block 21 to fix the positioning block 22 on the fixing block 21, thereby achieving a stable installation of the positioning block 22 on the chuck 10.

[0032] As an example, the jaw assembly 30 includes a jaw body 31 and a clamping pin 32 detachably disposed on the jaw body 31. A limiting block 313 is provided on the side of the jaw body 31 away from the clamping pin 32. The limiting block 313 is adapted to the limiting groove 221. The jaw body 31 is connected to the positioning block 22 through multiple connectors 40. The clamping pin 32 is used to clamp the gear 60. In this embodiment, the axial direction of the clamping pin 32 is arranged along the radial direction of the chuck 10. The end of the clamping pin 32 near the center of the chuck 10 is adapted to the tooth groove of the gear 60. In other words, the shape and size of the end of the clamping pin 32 away from the jaw assembly 30 are designed according to the tooth groove shape of the gear 60. Specifically, the chuck body 31 includes a connecting portion 311 and a mounting portion 312 integrally connected to the connecting portion 311. The connecting portion 311 has multiple connecting through holes adapted to the connecting member 40. In this embodiment, the connecting member 40 is a connecting bolt. The connecting bolt passes through the connecting through holes on the connecting portion 311 and is screwed to the positioning block 22 to fix the chuck body 31 on the positioning block 22. More specifically, the connecting portion 311 has two spaced limiting blocks 313 on the side opposite to the mounting portion 312. The engagement of the limiting blocks 313 with the limiting grooves 221 on the positioning block 22 can not only effectively improve the installation accuracy and stability of the chuck body 31 on the chuck 10, but also effectively prevent the chuck body 31 from moving left and right during the processing of the gear 60, thereby improving the clamping stability of the chuck assembly 30 on the gear 60.

[0033] Furthermore, the mounting part 312 is provided with a first mounting hole, a second mounting hole and a third mounting hole communicating with the first mounting hole at one end away from the connecting part 311. The central axes of the first mounting hole and the second mounting hole are located on the same horizontal line, and the diameter of the second mounting hole is larger than the diameter of the first mounting hole. The third mounting hole is arranged radially along the first mounting hole. The first mounting hole is used to install the clamping pin 32.

[0034] Furthermore, the chuck assembly 30 also includes a fixing pin 33. The second mounting hole is used to install the fixing pin 33. When the clamping pin 32 is located in the first mounting hole and the fixing pin 33 is located in the second mounting hole, the end face of the fixing pin 33 abuts against the end of the clamping pin 32 to prevent the clamping pin 32 from exiting the tooth groove of the gear 60 during the gear 60 machining process. This can effectively ensure the accuracy of the clamping pin 32 when clamping the gear 60.

[0035] Furthermore, the chuck assembly 30 also includes a locating pin 34. The shaft of the clamping pin 32 is provided with a locating hole adapted to the locating pin 34. The third mounting hole is used to install the locating pin 34. The locating pin 34 can prevent the shaft of the clamping pin 32 from rotating during the machining of the gear 60, effectively ensuring the clamping reliability of the clamping pin 32 on the gear 60. It should be understood that when the clamping pin 32 is severely worn and needs to be replaced, the locating pin 34 can be removed from the third mounting hole on the chuck body 31 first, and then the clamping pin 32 can be removed from the first mounting hole on the chuck body 31 and replaced. Then, the locating pin 34 can be installed to fix the replaced clamping pin 32 on the chuck body 31. Compared with the prior art, it is not necessary to disassemble and replace the entire chuck assembly 30, which greatly reduces the use cost and maintenance workload.

[0036] As an example, the gear 60 clamping device of this application also includes a support component 50. The support component 50 includes a support block 51, a limiting post 52 fixed in the middle of the chuck 10, and a plurality of connecting posts 53 evenly spaced around the limiting post 52. As a specific example, in this embodiment, the middle region of the chuck 10 is provided with three connecting posts 53. The three connecting posts 53 are evenly spaced around the limiting post 52. The total height of the connecting posts 53 is less than the total height of the limiting post 52. The connecting posts 53 can be used to raise the support block 51. One side of the support block 51 is provided with a limiting hole adapted to the limiting post 52, and the other side of the support block 51 is provided with multiple support posts 511. The multiple support posts 511 are evenly arranged around the center of the support block 51. The support posts 511 are used to abut against the end face of the gear 60 to support the gear 60. As a specific example, in this embodiment, the support block 51 is provided with three support posts 511. Each pair of adjacent support posts 511 is provided with a trapezoidal opening slot. Each trapezoidal opening slot is provided with a positioning component 20 and a claw component 30. More specifically, the end of the connecting part 311 on the positioning block 22 and the claw body 31 near the center of the chuck 10 is designed with a trapezoidal end structure adapted to the trapezoidal opening slot, so that the structural design of the positioning component 20, the claw component 30 and the support component 50 on the chuck 10 is simpler and more compact, and the space utilization rate on the chuck 10 is improved.

[0037] Furthermore, the distance between the support end face of the support column 511 and the surface of the chuck 10 should be less than or equal to the distance between the outer edge of the bottom end of the clamping pin 32 shaft and the surface of the chuck 10.

[0038] In practical use, the gear 60 clamping device of this utility model can be used as follows: the gear 60 part is clamped above the device of this application by an external mechanical gripper and slowly lowered in the direction of the support block 51. Since the end of the clamping pin 32 is adapted to the shape of the gear 60, the tooth groove of the gear 60 will fall down along the end of the clamping pin 32. When the lower end face of the gear 60 abuts against the three support columns 511 on the support block 51, the external mechanical gripper will leave the device to a safe position. The chuck 10 will move the jaw assembly 30 under the control of the preset program to drive the clamping pin 32 to clamp the gear 60. During the processing of the gear 60, the clamping pin 32 can stably clamp the gear 60. After the gear 60 is processed, the chuck 10 will move the jaw assembly 30 under the control of the preset program to drive the clamping pin 32 to release the gear 60. Then, the gear 60 part is slowly raised by the external mechanical gripper to leave the device of this application.

[0039] In summary, the beneficial effects of the gear clamping device of this utility model are as follows: by setting a positioning component on the chuck to achieve the positioning and installation of the jaw assembly on the chuck, the installation accuracy and ease of installation of the jaw assembly on the chuck are effectively improved. Furthermore, the jaw assembly clamps and fixes the gear through a detachable clamping pin. When wear is severe, only the clamping pin needs to be replaced, without disassembling and replacing the entire jaw assembly, greatly reducing usage costs and maintenance workload. Specifically, the positioning component includes a fixing block and a positioning block. A limiting groove is provided on one side of the positioning block. The jaw assembly includes a jaw body and a clamping pin detachably provided on the jaw body. A limiting block is provided on the side of the jaw body opposite to the clamping pin. The limiting block is adapted to the limiting groove. In the actual assembly process, the jaw assembly is fixed on the positioning component through the engagement of the limiting block and the limiting groove, as well as multiple connecting parts, thereby achieving the positioning and installation of the jaw assembly on the chuck.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model application should be determined by the appended claims.

Claims

1. A gear clamping device for clamping and fixing gears, characterized in that, The gear clamping device includes a chuck, a plurality of positioning components evenly spaced around the center of the chuck, and a jaw assembly connected to the positioning components. The positioning component includes a fixing block and a positioning block connected to the fixing block. A limiting groove is provided on one side of the positioning block, and the limiting groove is arranged radially along the chuck. The chuck assembly includes a chuck body and a clamping pin detachably disposed on the chuck body. A limiting block is provided on the side of the chuck body opposite to the clamping pin. The limiting block is adapted to the limiting groove. The chuck body is connected to the positioning block through multiple connectors. The axial direction of the clamping pin is arranged along the radial direction of the chuck. The end of the clamping pin near the center of the chuck is adapted to the tooth groove of the gear.

2. The gear clamping device according to claim 1, characterized in that, The fixing block includes a fixing part and an abutting part located at one end of the fixing part away from the center of the chuck. The abutting part has an inner arc surface on one side near the center of the chuck.

3. The gear clamping device according to claim 2, characterized in that, The positioning block has a guide groove on the side opposite to the limiting groove that is adapted to the fixing part. The positioning block has an outer arc surface at one end along the length direction of the guide groove. The outer arc surface is adapted to the inner arc surface to achieve a tight fit between the positioning block and the fixing block.

4. The gear clamping device according to claim 1, characterized in that, The claw body includes a connecting part and a mounting part integrally connected to the connecting part. The connecting part is provided with a connecting through hole adapted to the connecting member. The limiting block is provided on the side of the connecting part away from the mounting part. The clamping pin is provided on the end of the mounting part away from the connecting part.

5. The gear clamping device according to claim 4, characterized in that, The mounting portion has a first mounting hole, a second mounting hole communicating with the first mounting hole, and a third mounting hole at one end away from the connecting portion. The central axes of the first mounting hole and the second mounting hole are located on the same horizontal line, and the diameter of the second mounting hole is larger than the diameter of the first mounting hole. The third mounting hole is arranged radially along the first mounting hole. The first mounting hole is used to install the clamping pin.

6. The gear clamping device according to claim 5, characterized in that, The claw assembly further includes a fixing pin, and the second mounting hole is used to install the fixing pin. When the clamping pin is located in the first mounting hole and the fixing pin is located in the second mounting hole, the end face of the fixing pin abuts against the end of the clamping pin.

7. The gear clamping device according to claim 5, characterized in that, The jaw assembly also includes a positioning pin, and the shaft of the clamping pin is provided with a positioning hole that is adapted to the positioning pin. The third mounting hole is used to install the positioning pin.

8. The gear clamping device according to claim 1, characterized in that, The connecting component is a connecting bolt.

9. The gear clamping device according to claim 1, characterized in that, The gear clamping device further includes a support assembly, which includes a support block, a limiting post fixed in the middle of the chuck, and a plurality of connecting posts evenly spaced along the circumference of the limiting post. One side of the support block is provided with a limiting hole adapted to the limiting post, and the other side of the support block is provided with a plurality of support posts. The plurality of support posts are evenly arranged around the center of the support block, and the support posts are used to abut against the end face of the gear to support the gear.

10. The gear clamping device according to claim 9, characterized in that, The distance between the support end face of the support column and the surface of the chuck should be less than or equal to the distance between the outer edge of the bottom end of the clamping pin shaft and the surface of the chuck.

Images