Powder metallurgy driven gear beveling hole angle die

Abstract

The utility model belongs to the technical field of driven gear edge chamfering and hole angle chamfering, and discloses a powder metallurgy driven gear edge chamfering and hole angle chamfering die which comprises an upper die frame, a polishing body, a lower die frame, a gear and a guide assembly. The guide assembly comprises guide rods which are symmetrically installed at the four corners of the lower die frame and penetrate through the upper die frame. The embedded plates, the limiting blocks, the embedded grooves and the like are arranged, before use, the embedded plates are sequentially inserted into the embedded grooves in the guide rods, the embedded plates are limited and fixed through the installed limiting blocks, the moving distance of the upper die frame is shortened through the multiple embedded plates, and then the machining depth is controlled; then the gear is moved to enable the positioning rod to be embedded into a small hole, needing to be machined, in the gear, guiding and positioning are completed, and then the problems that at present, an operator needs to manually align the machining end with the small hole in the surface of the gear, and the machining depth needs to be controlled by experience during machining are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chamfering hole angles of driven gears, and in particular relates to a powder metallurgy driven gear chamfering hole angle die. Background Art

[0002] Currently, when performing chamfering hole corner processing on driven gears, operators mostly place the gears directly on the processing table, align the small holes on the gear surface with the processing end, and then manually press down the processing end for processing. This method requires high work experience from the user, and requires constant concentration during the processing, which greatly increases the difficulty and workload of the work. Therefore, a powder metallurgy driven gear chamfering hole corner mold is designed to solve the problem that the current operator needs to manually align the processing end with the small hole on the gear surface, and needs to rely on experience to control the processing depth during processing. Utility Model Content

[0003] The purpose of the utility model is to provide a powder metallurgy driven gear chamfering hole corner die to solve the problem raised in the above background technology that the current operator needs to manually align the processing end with the small hole on the gear surface, and needs to rely on experience to control the processing depth during processing.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a powder metallurgy driven gear chamfering hole corner mold comprises an upper mold frame, a grinding body, a lower mold frame, a gear and a guide assembly, the guide assembly comprises a guide rod, the guide rod is symmetrically installed at the four corners of the lower mold frame, and the guide rod passes through the upper mold frame, a grinding body is installed through the middle of the surface of the upper mold frame, the gear is placed on the surface of the lower mold frame, and the gear is located directly below the grinding body, and the guide assembly is used to control the distance between the upper mold frame and the lower mold frame.

[0005] Preferably, the guide assembly also includes an interlocking groove, an interlocking plate and a limit block. An interlocking groove is opened in the middle of the side wall of the guide rod. The interlocking plate is a U-shaped plate, and the interlocking plate is inserted into the inside of the interlocking groove. The limit block is symmetrically installed on both sides of the inner wall of the interlocking plate, and the side wall of the limit block is in contact with the inner wall of the interlocking groove.

[0006] Preferably, a positioning hole is opened in the middle of the surface of the lower mold frame and directly below the grinding body, a positioning rod is embedded in the positioning hole, a rubber layer is installed and wrapped on the outer wall of the positioning rod, and the end of the positioning rod is embedded in the small hole on the gear, and the rubber layer is in contact with the positioning hole and the inner wall of the small hole respectively.

[0007] Preferably, sliding grooves are symmetrically provided at the front and rear ends of the lower mold frame and on both sides of the positioning hole, a lower pressure plate is slidably arranged in the sliding groove, the lower pressure plate is a U-shaped plate, and a load-bearing bar is arranged inside the lower pressure plate.

[0008] Preferably, the sliding groove is a T-shaped groove, and an anti-skid layer is installed on the top of the inner wall of the lower pressure plate, and the end surface of the anti-skid layer is in contact with the gear surface.

[0009] Preferably, the height of the lower pressing plate is smaller than the maximum distance between the upper mold frame and the lower mold frame, and through holes are symmetrically provided on the outer walls on both sides of the lower pressing plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) The utility model is provided with an interlocking plate, a limit block and an interlocking groove. Before use, the interlocking plates are inserted into the interlocking groove on the guide rod in sequence, and the installed limit block is used to limit the interlocking plate so that it cannot be directly separated from the interlocking groove. The moving distance of the upper mold frame is shortened by a plurality of interlocking plates to control the processing depth. Then, the gear is moved so that the positioning rod is embedded in the small hole to be processed on the gear to complete the guided positioning, thereby solving the problem that the current operator needs to manually align the processing end with the small hole on the gear surface and needs to rely on experience to control the processing depth during processing.

[0012] (2) The utility model is provided with a sliding groove and a lower pressure plate, etc. After completing the socketing of the gears, the operator needs to push the lower pressure plate downward to shorten the distance between the lower pressure plate and the lower mold frame, and use the gravity increased by the load-bearing bar to drive the lower pressure plate to continuously exert downward pressure on the gears, thereby reducing the problem of the gears moving on their own. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is the appearance diagram of the utility model;

[0015] Figure 3 It is a top view of the utility model;

[0016] Figure 4 This is the appearance diagram of the mosaic plate of the utility model;

[0017] In the figure: 1. upper mold frame; 2. positioning rod; 3. grinding body; 4. lower pressure plate; 5. anti-slip layer; 6. guide rod; 7. engaging plate; 8. gear; 9. positioning hole; 10. rubber layer; 11. lower mold frame; 12. engaging groove; 13. through hole; 14. sliding groove; 15. limit block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 and Figure 3-Figure 4 As shown, the utility model provides the following technical solutions: a powder metallurgy driven gear chamfering hole corner mold comprises an upper mold frame 1, a grinding body 3, a lower mold frame 11, a gear 8 and a guide assembly, the guide assembly comprises a guide rod 6, the guide rod 6 is symmetrically installed at the four corners of the lower mold frame 11, and the guide rod 6 penetrates the upper mold frame 1, the grinding body 3 is penetrated and installed in the middle of the surface of the upper mold frame 1, the gear 8 is placed on the surface of the lower mold frame 11, and the gear 8 is located directly below the grinding body 3, the guide assembly is used to control the distance between the upper mold frame 1 and the lower mold frame 11, and the guide assembly also includes an interlocking groove 12, an interlocking plate 7 and a limit A positioning block 15 is provided with an engaging groove 12 in the middle of the side wall of the guide rod 6. The engaging plate 7 is a U-shaped plate, and the engaging plate 7 is inserted into the engaging groove 12. The limit block 15 is symmetrically installed on both sides of the inner wall of the engaging plate 7, and the side wall of the limit block 15 is in contact with the inner wall of the engaging groove 12. A positioning hole 9 is provided in the middle of the surface of the lower mold frame 11 and directly below the grinding body 3. A positioning rod 2 is embedded in the positioning hole 9. A rubber layer 10 is installed and wrapped on the outer wall of the positioning rod 2, and the end of the positioning rod 2 is embedded in the small hole on the gear 8, and the rubber layer 10 is in contact with the positioning hole 9 and the inner wall of the small hole respectively.

[0020] Through the above technical scheme: before use, the interlocking plate 7 is inserted into or pulled out of the interlocking groove 12 on the guide rod 6 in sequence by squeezing the limit block 15, and the installed limit block 15 is used to limit the interlocking plate 7 so that it cannot directly escape from the interlocking groove 12. When pressing down, multiple interlocking plates 7 can be used to shorten the moving distance of the upper mold frame 1, thereby controlling the processing depth. Subsequently, the positioning rod 2 is embedded into the positioning hole 9, and the gear 8 is moved to be sleeved on the positioning rod 2. The gap is filled with the rubber layer 10. At the same time, the positioning rod 2 is connected with the small hole through the interlocking connection with the small hole, so that the small hole is driven to move to the bottom of the grinding body 3 to complete the guided positioning, thereby solving the problem that the current operator needs to manually align the processing end with the small hole on the surface of the gear 8, and needs to rely on experience to control the processing depth during processing.

[0021] See also Figure 1-Figure 3As shown, sliding grooves 14 are symmetrically provided at the front and rear ends of the lower mold frame 11 and on both sides of the positioning hole 9, and a lower pressure plate 4 is slidably arranged in the sliding groove 14. The lower pressure plate 4 is a U-shaped plate, and a load-bearing strip is arranged inside the lower pressure plate 4. The sliding groove 14 is a T-shaped groove, and an anti-slip layer 5 is installed on the top of the inner wall of the lower pressure plate 4. The end face of the anti-slip layer 5 is in contact with the surface of the gear 8. The height of the lower pressure plate 4 is less than the maximum distance between the upper mold frame 1 and the lower mold frame 11, and through holes 13 are symmetrically provided on the outer walls on both sides of the lower pressure plate 4.

[0022] Through the above technical scheme: after completing the socketing of the gear 8, the operator still needs to push the lower pressure plate 4 downward to shorten the distance between the lower pressure plate 4 and the lower mold frame 11, so that the anti-skid layer 5 and the surface of the gear 8 are in contact with each other, and the gravity increased by the load-bearing bar is used to drive the lower pressure plate 4 to continuously generate downward pressure on the gear 8. During processing, the static friction generated by the contact between the anti-skid layer 5 and the surface of the gear 8 is used, and the downward pressure generated by the upper and lower plates is combined to reduce the possibility of the gear 8 being affected by the processing and causing position deviation, thereby ensuring the normal progress of the processing. When removing the workpiece later, one side of the lower pressure plate 4 can be slightly lifted through the through hole 13. After reducing the downward pressure and static friction, the gear 8 can be pushed to rotate on the positioning rod 2 until the gear 8 is completely separated from the lower pressure plate 4, and then the gear 8 can be directly lifted to complete the removal.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A powder metallurgy driven gear chamfering hole corner die, characterized in that: The invention comprises an upper mold frame (1), a grinding body (3), a lower mold frame (11), a gear (8) and a guide assembly, wherein the guide assembly comprises a guide rod (6), wherein the guide rod (6) is symmetrically mounted at the four corners of the lower mold frame (11), and the guide rod (6) passes through the upper mold frame (1), and the grinding body (3) is installed through the middle of the surface of the upper mold frame (1), the gear (8) is placed on the surface of the lower mold frame (11), and the gear (8) is located directly below the grinding body (3), and the guide assembly is used to control the distance between the upper mold frame (1) and the lower mold frame (11).

2. A powder metallurgy driven gear chamfering hole corner die according to claim 1, characterized in that: The guide assembly further comprises an engaging groove (12), an engaging plate (7) and a limit block (15); the engaging groove (12) is provided in the middle of the side wall of the guide rod (6); the engaging plate (7) is a U-shaped plate, and the engaging plate (7) is inserted into the engaging groove (12); the limit block (15) is symmetrically mounted on both sides of the inner wall of the engaging plate (7), and the side wall of the limit block (15) is in contact with the inner wall of the engaging groove (12).

3. A powder metallurgy driven gear chamfering hole corner die according to claim 2, characterized in that: A positioning hole (9) is provided in the middle of the surface of the lower mold frame (11) and directly below the grinding body (3); a positioning rod (2) is embedded in the positioning hole (9); a rubber layer (10) is installed and wrapped on the outer wall of the positioning rod (2); and the end of the positioning rod (2) is embedded in the small hole on the gear (8); the rubber layer (10) is in contact with the positioning hole (9) and the inner wall of the small hole respectively.

4. The powder metallurgy driven gear chamfering hole corner die according to claim 2, characterized in that: The lower mold frame (11) has sliding grooves (14) symmetrically arranged at the front and rear ends and on both sides of the positioning hole (9), and a lower pressing plate (4) is slidably arranged in the sliding groove (14). The lower pressing plate (4) is a U-shaped plate, and a load-bearing bar is arranged inside the lower pressing plate (4).

5. The powder metallurgy driven gear chamfering hole corner die according to claim 4, characterized in that: The sliding groove (14) is a T-shaped groove, and the top of the inner wall of the lower pressing plate (4) is installed with an anti-slip layer (5), and the end surface of the anti-slip layer (5) is in contact with the surface of the gear (8).

6. The powder metallurgy driven gear chamfering hole corner die according to claim 4, characterized in that: The height of the lower pressing plate (4) is smaller than the maximum distance between the upper mold frame (1) and the lower mold frame (11), and through holes (13) are symmetrically provided on the outer walls on both sides of the lower pressing plate (4).

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