Grinding fixture for crankshaft of air conditioner compressor

Abstract

The utility model discloses a crankshaft grinding clamp for an air conditioner compressor, which belongs to the technical field of grinding clamps and comprises a fixed chassis, a mounting top disc in threaded connection with the top end of the fixed chassis, an upper fixed disc fixedly mounted in the mounting top disc, a lower fixed disc movably abutted in the fixed chassis, and a plurality of inserting square rods fixedly mounted at the bottom end of the upper fixed disc. A fixed motor is fixedly installed in the lower fixed disc, a worm is fixedly installed at the output end of the fixed motor, one side of the worm is meshed with a worm gear, a connecting ring is fixedly installed at the top end of the worm gear, a rotating disc is fixedly installed at the top end of the connecting ring, and a threaded rotating plate is fixedly installed at the top end of the rotating disc. A plurality of movable sliding blocks are slidably connected to the threaded rotating plate, and movable sliding frames are fixedly mounted at the top ends of the movable sliding blocks. The clamp can meet more kinds of machining requirements and is easy to operate, the labor intensity of workers is relieved, production safety is guaranteed, and the clamp can be checked and maintained conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding fixtures, in particular to a grinding fixture for an air-conditioning compressor crankshaft. Background Art

[0002] The crankshaft in the crankshaft grinding fixture of the air-conditioning compressor is a key component of the rotary air-conditioning compressor. Its main function is to convert reciprocating motion into rotary motion, thereby transmitting torque so that the connecting rod can obtain the required power. In the air compressor, the crankshaft also drives the piston to produce reciprocating motion and converts rotary motion into linear motion. During the processing, special attention should be paid to the parallelism between the crankshaft radius axis and the shaft diameter axis, as well as the measurement and control of parameters such as the roundness of the crankshaft radius and the shaft diameter. The shortcomings of the existing technology: the traditional processing technology may not meet the high precision and high efficiency requirements of the crankshaft of the modern air-conditioning compressor, especially in the processing of the outer circle of the eccentric shaft, which is related to the smooth operation and noise reduction of the compressor. Therefore, a new type of fixture processing technology is needed to improve the processing accuracy and efficiency. The background technology of the crankshaft grinding fixture of the air-conditioning compressor reflects the importance of the crankshaft in the compressor, as well as the technical challenges and precision requirements it faces during the processing.

[0003] Most of the existing pressing blocks and clamps achieve precise positioning and stable fixation of the crankshaft through the pressing blocks and clamps. The overall adjustment is inconvenient and cannot adapt to crankshafts of different models. The operation is complicated, the safety guarantee is not high, and it is not convenient to maintain and clean. Therefore, we propose an air-conditioning compressor crankshaft grinding fixture to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide an air-conditioning compressor crankshaft grinding fixture to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A crankshaft grinding fixture for an air-conditioning compressor comprises: a fixed chassis, a mounting top plate being threadedly connected to the top of the fixed chassis, an upper fixed plate being fixedly mounted in the mounting top plate, a lower fixed plate being movably abutted in the fixed chassis, a plurality of plug-in square rods being fixedly mounted on the bottom end of the upper fixed plate, the plurality of plug-in square rods being all plugged into the lower fixed plate, a fixed motor being fixedly mounted in the lower fixed plate, a worm being fixedly mounted on the output end of the fixed motor, a worm gear being meshed with a worm gear, a connecting ring being fixedly mounted on the top of the worm gear, a rotating disk being fixedly mounted on the top of the connecting ring, a threaded rotating plate being fixedly mounted on the top of the rotating disk, a plurality of movable sliders being slidably connected to the threaded rotating plate, a movable sliding frame being fixedly mounted on the top of the movable sliding slider, and a clamping pressure block being fixedly mounted on one side of the movable sliding frame.

[0007] Preferably, a plurality of fixed springs are fixedly installed in the lower fixed plate, a sliding buckle is fixedly installed on one side of the fixed spring, a limiting slot matching the sliding buckle is provided on the plug-in square rod, a movable pull rod is fixedly installed on one side of the sliding buckle, a rotating disk is rotatably installed on the bottom end of the lower fixed plate, an arc groove is provided on the rotating disk, and the movable pull rod is slidably installed in the arc groove.

[0008] Preferably, a plurality of limiting grooves are provided in the lower fixed plate, the fixing spring is fixedly installed in the limiting groove, the sliding buckle is slidably installed in the limiting groove, the lower fixed plate is provided with a sliding square groove matching the plug-in square rod, and the lower fixed plate is provided with a sliding groove matching the movable pull rod.

[0009] Preferably, a plurality of fixed blocks are fixedly installed on the top of the mounting top plate, a connecting pressure rod is fixedly installed between two adjacent fixed blocks, a sliding recess matching the connecting pressure rod is provided on the movable slide frame, and a sliding arc groove matching the threaded rotary plate is provided at the bottom of the movable slide block.

[0010] Preferably, a plurality of sliding square holes matching the movable sliding frame are provided at the top of the mounting top plate, a threaded ring is fixedly installed at the top of the fixed bottom plate, and a threaded groove matching the threaded ring is provided at the bottom of the mounting top plate.

[0011] Preferably, a T-shaped ring is fixedly installed on the top of the rotating disc, a T-shaped ring groove matching the T-shaped ring is opened at the bottom of the lower fixed disc, a rotating circular groove matching the rotating disc is opened on the upper fixed disc, and an installation groove matching the fixed motor is opened in the lower fixed disc.

[0012] Preferably, the fixed bottom plate, the mounting top plate and the worm gear are all provided with limiting circular holes, and the fixed bottom plate is provided with a placement groove matching the lower fixed plate.

[0013] In the utility model, the crankshaft grinding fixture for an air-conditioning compressor is described, and the crankshaft to be clamped is placed into the limiting circular hole provided on the fixture, and then the fixed motor is started to drive the worm to rotate, so that the worm drives the worm wheel to rotate together while the worm rotates, and the worm wheel drives the connecting ring and the rotating disc to rotate, drives the threaded rotating plate to rotate together, drives multiple moving slide blocks to move, and drives the moving slide frame and the clamping block to move together, and the moving slide frame is restricted by the sliding square hole provided on the mounting top plate, so as to slide in the sliding square hole, so as to clamp the crankshaft in the limiting circular hole to prevent displacement, and then the fixture is installed on the grinding machine;

[0014] In the utility model, the crankshaft grinding fixture of the air-conditioning compressor is described. The fixture is disassembled from the grinding machine, and the fixed chassis is rotated to drive the threaded ring to rotate, so that the threaded ring is separated from the mounting top plate. Then, the rotating disc is rotated to drive the rotating disc to move multiple movable rods, and at the same time, the movable rod drives the sliding buckle to squeeze the fixed spring, so as to recover it into the lower fixed plate, release the restriction on the plug-in square rod, and separate the plug-in square rod from the lower fixed plate. Then, the upper fixed plate is picked up to facilitate cleaning of the interior of the lower fixed plate.

[0015] The utility model has a reasonable structural design, and the cooperation between the worm wheel and the worm drives the clamping block to move for clamping, which can adapt to more kinds of processing needs, is easy to operate, reduces the labor intensity of workers, ensures production safety, and is convenient for inspection and maintenance of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an air-conditioning compressor crankshaft grinding fixture proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the structural disassembly of an air-conditioning compressor crankshaft grinding fixture proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the partial structural disassembly of an air-conditioning compressor crankshaft grinding fixture proposed by the utility model;

[0019] Figure 4 for Figure 3 A partial enlarged view of part A;

[0020] Figure 5 for Figure 2 A partial enlarged view of part B.

[0021] In the figure: 1. Fix the bottom plate; 2. Install the top plate; 3. Move the sliding frame; 4. Move the slider; 5. Fix the square block; 6. Clamp the pressure block; 7. Threaded ring; 8. Upper fixed plate; 9. Insert the square rod; 10. Lower fixed plate; 11. Rotate the disc; 12. Slide the buckle; 13. Fix the spring; 14. Move the pull rod; 15. Threaded rotary plate; 16. Worm gear; 17. Connect the pressure rod; 18. Fix the motor; 19. Worm; 20. Connect the ring; 21. Rotate the disc; 22. T-shaped ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-5 A crankshaft grinding fixture for an air-conditioning compressor comprises: a fixed chassis 1, a mounting top plate 2 being threadedly connected to the top of the fixed chassis 1, an upper fixed plate 8 being fixedly installed in the mounting top plate 2, a lower fixed plate 10 being movably abutted in the fixed chassis 1, a plurality of plug-in square rods 9 being fixedly installed at the bottom of the upper fixed plate 8, and the plurality of plug-in square rods 9 are all plugged into the lower fixed plate 10, a fixed motor 18 being fixedly installed in the lower fixed plate 10, a worm 19 being fixedly installed on the output end of the fixed motor 18, a worm gear 16 being meshed on one side of the worm gear 19, a connecting ring 20 being fixedly installed on the top of the worm gear 16, a rotating disc 21 being fixedly installed on the top of the connecting ring 20, a threaded rotary plate 15 being fixedly installed on the top of the rotating disc 21, a plurality of movable sliders 4 being slidably connected to the threaded rotary plate 15, a movable slide frame 3 being fixedly installed on the top of the movable slider 4, and a clamping pressure block 6 being fixedly installed on one side of the movable slide frame 3.

[0024] In this embodiment, a plurality of fixed springs 13 are fixedly installed in the lower fixed plate 10, a sliding buckle 12 is fixedly installed on one side of the fixed spring 13, a limiting slot matching the sliding buckle 12 is provided on the plug-in square rod 9, a moving pull rod 14 is fixedly installed on one side of the sliding buckle 12, a rotating disc 11 is rotatably installed at the bottom end of the lower fixed plate 10, an arc groove is provided on the rotating disc 11, and the moving pull rod 14 is slidably installed in the arc groove, so that its movement can be more conveniently controlled.

[0025] In this embodiment, a plurality of limiting grooves are provided in the lower fixed plate 10, the fixing spring 13 is fixedly installed in the limiting groove, the sliding buckle 12 is slidably installed in the limiting groove, the lower fixed plate 10 is provided with a sliding square groove matching the plug-in square rod 9, and the lower fixed plate 10 is provided with a sliding groove matching the moving pull rod 14, which makes it more convenient to move.

[0026] In this embodiment, a plurality of fixed blocks 5 are fixedly installed on the top of the mounting top plate 2, a connecting pressure rod 17 is fixedly installed between two adjacent fixed blocks 5, a sliding recessed hole matching the connecting pressure rod 17 is opened on the movable slide frame 3, a sliding arc groove matching the threaded rotary plate 15 is opened at the bottom end of the movable slider 4 to better prevent it from moving, a plurality of sliding square holes matching the movable slide frame 3 are opened at the top of the mounting top plate 2, a threaded ring 7 is fixedly installed on the top of the fixed bottom plate 1, and a threaded groove matching the threaded ring 7 is opened at the bottom end of the mounting top plate 2 to better control its movement.

[0027] In this embodiment, a T-shaped ring 22 is fixedly installed on the top of the rotating disk 11, a T-shaped ring groove matching the T-shaped ring 22 is opened at the bottom of the lower fixed disk 10, a rotating circular groove matching the rotating disk 21 is opened on the upper fixed disk 8, and an installation groove matching the fixed motor 18 is opened in the lower fixed disk 10, which is more convenient for installation. Restriction circular holes are opened on the fixed chassis 1, the mounting top plate 2 and the worm gear 16, and a placement groove matching the lower fixed disk 10 is opened on the fixed chassis 1 for better rotation.

[0028] In the present embodiment, when in use, the crankshaft to be clamped is placed into the limiting circular hole provided on the clamp, and then the fixed motor 18 fixedly installed in the lower fixed plate 10 is started to drive the worm 19 fixedly connected to its output end to rotate, and the worm 19 drives the worm wheel 16 meshing on one side to rotate while rotating, and the worm wheel 16 drives the connecting ring 20 fixedly installed on its top and the rotating disk 21 fixedly installed on the top of the connecting ring 20 to rotate, thereby driving the threaded rotating plate 15 fixedly installed on the top of the rotating disk 21 to rotate together, and when the threaded rotating plate 15 rotates, it drives a plurality of movable sliders 4 slidably installed thereon to move, and the movable slider 4 drives the movable slide frame 3 fixedly installed on its top to move together, and when the movable slide frame 3 passes through the restriction of the sliding square hole provided on the mounting top plate 2, In this way, it slides in the sliding square hole, and at the same time drives the clamping pressure block 6 fixedly installed on one side to move, so as to clamp the crankshaft in the restricted circular hole to prevent displacement, and then the fixture is installed on the grinder to facilitate work. After the grinding is completed, the fixture is removed from the grinder, and then the fixed chassis 1 is rotated to drive the threaded ring 7 to rotate, so that the threaded ring 7 is separated from the mounting top plate 2, and then the rotating disk 11 is rotated to drive the rotating disk 11 to drive multiple moving rods 14 to move, and at the same time, the moving rod 14 drives the sliding buckle 12 to squeeze the fixed spring 13, so as to recover it into the lower fixed plate 10, release the restriction on the plug-in square rod 9, and allow the plug-in square rod 9 to separate from the lower fixed plate 10, and then pick up the upper fixed plate 8 to facilitate cleaning the inside of the lower fixed plate 10.

[0029] The above is a detailed introduction to an air-conditioning compressor crankshaft grinding fixture provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An air-conditioning compressor crankshaft grinding fixture, characterized in that: include: A fixed chassis (1), the top of the fixed chassis (1) is threadedly connected to a mounting top plate (2), an upper fixed plate (8) is fixedly mounted inside the mounting top plate (2), a lower fixed plate (10) is movably abutted inside the fixed chassis (1), a plurality of plug-in square rods (9) are fixedly mounted on the bottom end of the upper fixed plate (8), the plurality of plug-in square rods (9) are all plugged into the lower fixed plate (10), a fixed motor (18) is fixedly mounted inside the lower fixed plate (10), and a worm gear is fixedly mounted on the output end of the fixed motor (18) A rod (19) is provided, one side of the worm (19) is meshed with a worm wheel (16), a connecting ring (20) is fixedly installed on the top of the worm wheel (16), a rotating disc (21) is fixedly installed on the top of the connecting ring (20), a threaded rotary plate (15) is fixedly installed on the top of the rotating disc (21), a plurality of movable sliders (4) are slidably connected to the threaded rotary plate (15), a movable slide frame (3) is fixedly installed on the top of the movable slider (4), and a clamping block (6) is fixedly installed on one side of the movable slide frame (3).

2. The air-conditioning compressor crankshaft grinding fixture according to claim 1, characterized in that: A plurality of fixed springs (13) are fixedly installed in the lower fixed plate (10), a sliding buckle (12) is fixedly installed on one side of the fixed spring (13), a limiting slot matching the sliding buckle (12) is provided on the plug-in square rod (9), a moving pull rod (14) is fixedly installed on one side of the sliding buckle (12), a rotating disc (11) is rotatably installed at the bottom end of the lower fixed plate (10), an arc groove is provided on the rotating disc (11), and the moving pull rod (14) is slidably installed in the arc groove.

3. The air-conditioning compressor crankshaft grinding fixture according to claim 2, characterized in that: The lower fixed plate (10) is provided with a plurality of limiting grooves, the fixing spring (13) is fixedly installed in the limiting grooves, the sliding buckle (12) is slidably installed in the limiting grooves, the lower fixed plate (10) is provided with a sliding square groove matching the plug-in square rod (9), and the lower fixed plate (10) is provided with a sliding groove matching the moving pull rod (14).

4. The air-conditioning compressor crankshaft grinding fixture according to claim 1, characterized in that: A plurality of fixed blocks (5) are fixedly mounted on the top of the mounting top plate (2), a connecting pressure rod (17) is fixedly mounted between two adjacent fixed blocks (5), a sliding recessed hole matching the connecting pressure rod (17) is provided on the movable slide frame (3), and a sliding arc groove matching the threaded rotary plate (15) is provided on the bottom of the movable slide block (4).

5. The air-conditioning compressor crankshaft grinding fixture according to claim 1, characterized in that: The top of the mounting top plate (2) is provided with a plurality of sliding square holes matching the movable sliding frame (3); the top of the fixed bottom plate (1) is fixedly provided with a threaded ring (7); the bottom of the mounting top plate (2) is provided with a threaded groove matching the threaded ring (7).

6. The air-conditioning compressor crankshaft grinding fixture according to claim 2, characterized in that: A T-shaped circular ring (22) is fixedly mounted on the top of the rotating circular disk (11); a T-shaped circular groove matching the T-shaped circular ring (22) is provided at the bottom of the lower fixed disk (10); a rotating circular groove matching the rotating circular disk (21) is provided on the upper fixed disk (8); and a mounting groove matching the fixed motor (18) is provided in the lower fixed disk (10).

7. The air-conditioning compressor crankshaft grinding fixture according to claim 1, characterized in that: The fixed base plate (1), the mounting top plate (2) and the worm wheel (16) are all provided with limiting circular holes, and the fixed base plate (1) is provided with a placement groove matching the lower fixed plate (10).

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