Gear grinding fixture

Abstract

This utility model relates to the field of machining technology and discloses a fixture for grinding gearbox gears. It includes a base plate, a fixed frame fixedly connected to the upper surface of the base plate, and a clamping assembly on the upper surface of the fixed frame. The clamping assembly includes two mounting brackets fixedly connected to the upper surface of the fixed frame. An electric cylinder is fixedly installed inside the fixed frame, and a connecting frame is fixedly connected to the output end of the electric cylinder. A support frame is fixedly connected to one end of the connecting frame, and two limiting rods are fixedly connected to one side of the support frame. The front and rear limiting rings of this utility model facilitate the front and rear clamping and limiting of the gear, and, in conjunction with the tooth block engaging the gear tooth groove, limit its movement up, down, left, and right, reducing the problem of gear displacement and disengagement during grinding. Simultaneously, the sliding mounting sleeve on the angle bracket facilitates quick insertion and removal of the tooth block to adapt to gears with different tooth pitch sizes, improving the fixture's versatility and replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a fixture for grinding gearbox gears. Background Technology

[0002] The gearbox is a core component of a vehicle's powertrain, used to change the engine's output speed and torque to adapt to different driving conditions. Gearbox gears are the core components in the gearbox that enable power transmission and speed regulation. Gear grinding is a finishing process for hardened gear tooth profiles. Grinding fixtures are special tools used to fix and position gear workpieces to ensure accuracy and stability during the grinding process.

[0003] When grinding the inner diameter of gearbox gears, a fixture is usually used to clamp the gear. Traditional fixtures include two-sided clamping and four-sided clamping. Although four-sided clamping is more stable than two-sided clamping, it only limits the gear's outer side in the top, bottom, left, and right directions. It is not convenient to limit the gear's front and back directions. During the grinding process after being clamped, the gear is prone to slight displacement due to the vibration force of grinding. In the absence of front and back limits, it is easy to fall out of the fixture, resulting in reduced grinding accuracy and making it difficult to process the gear stably. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a fixture for grinding gearbox gears.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a jig for grinding gearbox gears, including a base plate, a fixing frame fixedly connected to the upper surface of the base plate, and a clamping component provided on the upper surface of the fixing frame; The clamping assembly includes two mounting brackets, which are fixedly connected to the upper surface of a fixed frame. An electric cylinder is fixedly installed inside the fixed frame. A connecting frame is fixedly connected to the output end of the electric cylinder. A support frame is fixedly connected to one end of the connecting frame. Two limiting rods are fixedly connected to one side of the support frame.

[0006] As a further description of the above technical solution: The mounting bracket has a square hole inside, and the limiting rod is slidably connected inside the square hole. The upper surfaces of the support bracket and the two mounting brackets are all fixedly connected with limiting rings.

[0007] As a further description of the above technical solution: A plurality of arc-shaped frames are fixedly connected to one side of the limiting ring. An arc-shaped sleeve is slidably connected to the outside of the arc-shaped frame. A corner frame is fixedly connected to one side of the arc-shaped sleeve. An installation sleeve is slidably connected to the outside of the corner frame. A toothed block is fixedly connected to one side of the installation sleeve.

[0008] As a further description of the above technical solution: A threaded tube is connected through one side of the arc-shaped sleeve, a spring washer is provided on one side of the threaded tube, and a bolt is connected to the internal thread of the threaded tube.

[0009] As a further description of the above technical solution: A replacement component is provided on one side of the angle bracket. The replacement component includes a connecting block, which is fixedly connected to one side of the angle bracket. A mounting shell is fixedly connected to one side of the connecting block.

[0010] As a further description of the above technical solution: A limiting post is slidably connected to one side of the mounting shell. A cylindrical block is fixedly connected to one end of the limiting post. The cylindrical block is slidably connected inside the mounting shell. A compression spring is fixedly connected to one side of the inner wall of the cylindrical block. The compression spring is fixedly connected to the inner wall of the mounting shell. A shell cover is fixedly connected to the other end of the limiting post.

[0011] As a further description of the above technical solution: An iron sheet is fixedly connected to one end of the cylindrical block, and a cylindrical hole is opened on one side of the angle bracket, with a magnet fixedly connected inside the cylindrical hole.

[0012] This utility model has the following beneficial effects: 1. This utility model, through the setting of the clamping component, utilizes the limiting rings at the front and rear, which are equal in diameter to the gear, to facilitate clamping and limiting the gear at the front and rear. With the action of the tooth blocks around the gear engaging in the tooth grooves on the outer wall of the gear, it is easy to limit the gear up, down, left, and right, thus facilitating the all-round limiting of the gear. This helps to reduce the phenomenon of the gear displacing from the fixture, which would make grinding difficult. Furthermore, the position of the tooth blocks can be adjusted by sliding the arc-shaped sleeve on the arc-shaped frame, thus facilitating accurate engagement into the tooth grooves on the outer wall of the gear.

[0013] 2. This utility model, through the setting of the replacement component, utilizes the mounting sleeve that slides outside the angle bracket, which facilitates the disassembly of the tooth block. This allows for the replacement of the tooth block with the corresponding size limit according to the size of the teeth on the gear to be ground and the size of the tooth pitch on the outer wall. This improves the versatility of the clamping component and its compatibility with gears of different tooth pitch sizes. Moreover, the replacement process is only a plug-in and unplugging, which is relatively quick and convenient and helps to improve the replacement efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a schematic diagram of the mounting bracket structure proposed in this utility model; Figure 3 This is a schematic diagram of the connecting frame structure proposed in this utility model; Figure 4 This is a partial structural diagram of the angle bracket connection point proposed in this utility model; Figure 5 This is a schematic diagram of the mounting sleeve structure proposed in this utility model; Figure 6 This is a schematic diagram of the arc-shaped sleeve structure proposed in this utility model; Figure 7 This is a schematic diagram of the cross-sectional structure of the mounting shell proposed in this utility model; Figure 8 This is a schematic diagram of the cross-sectional structure of the cylindrical block proposed in this utility model.

[0015] Legend: 1. Base plate; 2. Fixing bracket; 3. Mounting bracket; 4. Electric cylinder; 5. Connecting bracket; 6. Support bracket; 7. Limiting rod; 8. Limiting ring; 9. Arc-shaped bracket; 10. Arc-shaped sleeve; 11. Folding bracket; 12. Mounting sleeve; 13. Tooth block; 14. Threaded pipe; 15. Spring washer; 16. Bolt; 17. Connecting block; 18. Mounting shell; 19. Limiting post; 20. Cylindrical block; 21. Compression spring; 22. Shell cover; 23. Iron sheet; 24. Cylindrical hole; 25. Magnet block. Detailed Implementation

[0016] 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.

[0017] As attached Figure 1-8 As shown, one embodiment of the present invention provides a jig for grinding gearbox gears, including a base plate 1, a fixing frame 2 fixedly connected to the upper surface of the base plate 1, and a clamping assembly provided on the upper surface of the fixing frame 2. The clamping assembly includes two mounting brackets 3, which are fixedly connected to the upper surface of the fixed bracket 2. An electric cylinder 4 is fixedly installed inside the fixed bracket 2. A connecting bracket 5 is fixedly connected to the output end of the electric cylinder 4, so that the electric cylinder 4 can drive the limit ring 8 to move through the connecting bracket 5. A support bracket 6 for installing the limit ring 8 is fixedly connected to one end of the connecting bracket 5. Two limit rods 7 are fixedly connected to one side of the support bracket 6. The limit rods 7 are square.

[0018] As attached Figure 1As shown, the mounting bracket 3 has a square hole inside for the limit rod 7 to pass through. The limit rod 7 is slidably connected inside the square hole. The upper surfaces of the support bracket 6 and the two mounting brackets 3 are all fixedly connected with limit rings 8 that limit and press the front and rear sides of the gear. The diameter of the limit rings 8 is the same as the diameter of the gear. One side of the limit rings 8 is fixedly connected with multiple arc-shaped frames 9 for limiting and guiding the arc-shaped sleeve 10. The arc-shaped sleeve 10, which is arc-shaped on the outside and has an arc-shaped cross-section, is slidably connected to the outside of the arc-shaped frame 9.

[0019] As attached Figure 4 As shown, a folding bracket 11 is fixedly connected to one side of the arc-shaped sleeve 10. The folding bracket 11 is L-shaped. An mounting sleeve 12 is slidably connected to the outside of the folding bracket 11. The mounting sleeve 12 is U-shaped and has a slot on one side that engages with the cylindrical block 20. A toothed block 13 matching the gear pitch is fixedly connected to one side of the mounting sleeve 12. A threaded tube 14 with internal threads is connected through one side of the arc-shaped sleeve 10 and fixed to one side of the arc-shaped sleeve 10. A spring washer 15 is provided on one side of the threaded tube 14. A bolt 16 is connected to the internal threads of the threaded tube 14. When the bolt 16 is tightened, it will compress the spring washer 15, thereby limiting the arc-shaped sleeve 10. A replacement component is provided on one side of the folding bracket 11. The replacement component includes a connecting block 17, which is fixedly connected to one side of the folding bracket 11. A mounting shell 18 is fixedly connected to one side of the connecting block 17. A hole for the limiting post 19 to pass through is provided on one side of the mounting shell 18.

[0020] As attached Figure 6 As shown, a limiting post 19 is slidably connected to one side of the mounting shell 18, which connects to the cylindrical block 20 and limits the compression spring 21. One end of the limiting post 19 is fixedly connected to the cylindrical block 20. A concave hole is provided on one side of the cylindrical block 20 to provide space for the compression spring 21 to compress. The cylindrical block 20 is slidably connected inside the mounting shell 18. The compression spring 21 is fixedly connected to one side of the inner wall of the cylindrical block 20. The compression spring 21 provides elastic force to push the cylindrical block 20. The compression spring 21 is fixedly connected to the inner wall of the mounting shell 18 and is sleeved on the outside of the limiting post 19. The other end of the limiting post 19 is fixedly connected to the shell cover 22, which is convenient for the operator to pull. One end of the cylindrical block 20 is fixedly connected to an iron sheet 23 for the magnetic block 25 to attract.

[0021] As attached Figure 7 As shown, a cylindrical hole 24 for inserting a cylindrical block 20 is provided on one side of the angle bracket 11, and a magnet block 25 for adsorbing an iron sheet 23 is fixedly connected inside the cylindrical hole 24.

[0022] Working principle: When in use, first place the gear to be ground, corresponding to the limit ring 8, on one side of the limit ring 8 on the base plate 1. Then, when adjusting the position of the limit tooth block 13 according to the position of the gear teeth and the position of the tooth groove, loosen the bolt 16 of the tooth block 13 on the side that needs to be adjusted, so that the arc sleeve 10 is in a sliding state outside the arc frame 9. Then slide the arc sleeve 10, which slides along the arc direction of the arc frame 9, so that it indirectly drives the position of the tooth block 13 to move in an arc through the connection of the angle bracket 11 and the mounting sleeve 12. After the position of the tooth block 13 is positioned and adjusted, tighten the bolt 16 under the connection of the internal thread of the threaded tube 14, so that the bolt 16 squeezes the spring washer 15 and fixes the position of the arc sleeve 10, thereby locking the tooth block 13. Then the gear is inserted into the outside of the multiple tooth blocks 13 and is positioned on one side of one of the limiting rings 8. Then the position of the tooth block 13 on the other limiting ring 8 is adjusted as described above. Then, the external controller is used to control the starting electric cylinder 4, so that its output end drives the connecting frame 5 to move towards one side of the fixed frame 2. Then, the connecting frame 5 drives the two support frames 6 to slide inside the square hole of the mounting frame 3, so that the other limit ring 8 can move closer to one of the limit rings 8. The two limit rings 8 are used to clamp the two sides of the gear to be processed. At this time, the gear is omnidirectionally limited, which makes it easier to use the grinding machine for grinding. When grinding gears with different pitch sizes, it is necessary to replace the tooth block 13. Pull the cover 22 outward. Under the action of the cover 22 driving the limiting post 19 to slide on one side of the mounting shell 18, the cylindrical block 20 will slide out of the cylindrical hole 24 and the interior of the mounting sleeve 12 and move into the interior of the mounting shell 18. At this time, the compression spring 21 will be compressed by the cylindrical block 20, so that the mounting sleeve 12 is released from the limit. Then, the mounting sleeve 12 drives the tooth block 13 to slide out from the outside of the angle bracket 11, thereby removing the tooth block 13. During installation, the tooth block 13, which matches the tooth pitch of the gear to be ground and is connected to the mounting sleeve 12, is slidably inserted into the outside of the angle bracket 11 using the mounting sleeve 12 and is located on one side of the inner wall of the connecting block 17. Then, the cover 22 is released, and under the action of the spring 21 after being charged and rebounding, the cylindrical block 20 will be pushed to slide through the inside of the mounting sleeve 12 and be inserted into the inside of the cylindrical hole 24. At this time, the iron piece 23 will be attracted to the magnet 25, thereby limiting and fixing the replaced tooth block 13.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixture for grinding gearbox gears, comprising a base plate (1), characterized in that: A fixing frame (2) is fixedly connected to the upper surface of the base plate (1), and a clamping component is provided on the upper surface of the fixing frame (2); The clamping assembly includes two mounting brackets (3), which are fixedly connected to the upper surface of the fixed bracket (2). An electric cylinder (4) is fixedly installed inside the fixed bracket (2). A connecting bracket (5) is fixedly connected to the output end of the electric cylinder (4). A support bracket (6) is fixedly connected to one end of the connecting bracket (5). Two limiting rods (7) are fixedly connected to one side of the support bracket (6).

2. The fixture for grinding gearbox gears according to claim 1, characterized in that: The mounting bracket (3) has a square hole inside, and the limiting rod (7) is slidably connected inside the square hole. The upper surfaces of the support bracket (6) and the two mounting brackets (3) are all fixedly connected with limiting rings (8).

3. The fixture for grinding gearbox gears according to claim 2, characterized in that: A plurality of arc-shaped frames (9) are fixedly connected to one side of the limiting ring (8), an arc-shaped sleeve (10) is slidably connected to the outside of the arc-shaped frame (9), a folding frame (11) is fixedly connected to one side of the arc-shaped sleeve (10), an installation sleeve (12) is slidably connected to the outside of the folding frame (11), and a toothed block (13) is fixedly connected to one side of the installation sleeve (12).

4. The fixture for grinding gearbox gears according to claim 3, characterized in that: A threaded tube (14) is connected through one side of the arc-shaped sleeve (10), a spring washer (15) is provided on one side of the threaded tube (14), and a bolt (16) is threaded inside the threaded tube (14).

5. The fixture for grinding gearbox gears according to claim 3, characterized in that: A replacement component is provided on one side of the angle bracket (11). The replacement component includes a connecting block (17), which is fixedly connected to one side of the angle bracket (11). A mounting shell (18) is fixedly connected to one side of the connecting block (17).

6. The fixture for grinding gearbox gears according to claim 5, characterized in that: A limiting post (19) is slidably connected to one side of the mounting shell (18). A cylindrical block (20) is fixedly connected to one end of the limiting post (19). The cylindrical block (20) is slidably connected inside the mounting shell (18). A compression spring (21) is fixedly connected to one side of the inner wall of the cylindrical block (20). The compression spring (21) is fixedly connected to the inner wall of the mounting shell (18). A shell cover (22) is fixedly connected to the other end of the limiting post (19). An iron sheet (23) is fixedly connected to one end of the cylindrical block (20).

7. The fixture for grinding gearbox gears according to claim 3, characterized in that: A cylindrical hole (24) is provided on one side of the angle bracket (11), and a magnet block (25) is fixedly connected inside the cylindrical hole (24).

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