Crankshaft machining device for refrigeration compressor

Abstract

The crankshaft machining device for the refrigeration compressor comprises a bottom plate, first supporting frames are symmetrically and fixedly arranged on the upper surface of the bottom plate, clamping assemblies are symmetrically installed in the first supporting frames, a chamfering assembly is arranged between the two first supporting frames, and each clamping assembly comprises a second telescopic air cylinder and a support. A second telescopic air cylinder is fixedly installed on the side wall in the first supporting frame, a second supporting plate is fixedly installed at the outer end of a piston rod of the second telescopic air cylinder, two sets of supporting cylinders are symmetrically arranged between the second supporting plate and the support, sliding shafts are arranged in the supporting cylinders in a sliding mode, the sliding shafts are fixed to the support, and the supporting cylinders are fixed to the second supporting plate. A second rubber wheel is rotationally arranged at the outer end of the support. According to the crankshaft clamping device, crankshafts with different shaft diameters can be stably fixed and clamped, and the crankshaft clamping device is convenient and fast to use.

Description

Technical Field

[0001] This utility model belongs to the field of crankshaft chamfering technology, and in particular relates to a crankshaft processing device for refrigeration compressors. Background Technology

[0002] Chamfering equipment used in compressor crankshaft production is mainly used to chamfer key parts of the compressor crankshaft to remove sharp edges and burrs, improve the surface quality of the crankshaft, and enhance the wear resistance and service life of the parts. During crankshaft production, a large chamfer is usually made on the upper outer side of the crank arm to reduce weight. However, when the journal is hollow, the chamfering must be controlled to avoid sharp edges appearing due to the intersection of the journal inner hole and the crank arm chamfer, which would cause stress concentration. Therefore, chamfering grinding is required to avoid mechanical failures during subsequent use and to make subsequent assembly easier and more convenient.

[0003] In the prior art, such as Chinese Patent Publication No. CN208713594U, a chamfering grinding device for crankshaft production is disclosed, including a fixed frame, a reciprocating lead screw, and a rotating rod. The reciprocating lead screw and the rotating rod are rotatably connected from top to bottom on the inner side of the fixed frame. A Y180M-2 motor is provided at the left end of both the reciprocating lead screw and the rotating rod. A lead screw slider is slidably connected to the inner side of the reciprocating lead screw, and a connecting hole is opened on the inner side of the lead screw slider. A movable frame is rotatably connected to the front end face of the rotating rod, and a Y160M2-2 motor is fixedly connected to the bottom end of the movable frame.

[0004] The chamfering grinding machine mentioned above does not hold the crankshaft securely, which affects the chamfering process of the crank arm during operation. Furthermore, the placement and installation of the crankshaft before chamfering is quite troublesome, and its chamfering efficiency is too low. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a crankshaft processing device for refrigeration compressors. This processing device can conveniently place and fix the crankshaft, and at the same time effectively improve the chamfering efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crankshaft machining device for a refrigeration compressor, comprising a base plate, with support frames symmetrically fixedly arranged on the upper surface of the base plate, clamping components symmetrically installed inside the support frames, and a chamfering component provided between the two support frames.

[0007] The clamping assembly includes a telescopic cylinder II and a support. The telescopic cylinder II is fixedly installed on the side wall inside the support frame I. A support plate II is fixedly installed on the outer end of the piston rod of the telescopic cylinder II. Two sets of support cylinders are symmetrically arranged between the support plate II and the support. A sliding shaft is slidably arranged inside the support cylinder. The sliding shaft is fixed to the support. The support cylinder is fixed to the support plate II. A spring sleeved on the surface of the sliding shaft is fixedly connected between the outer side of the support cylinder and the support. A rubber wheel II is rotatably arranged on the outer end of the support. A push switch is fixedly installed on the outer side of the support opposite to the support plate II.

[0008] Optionally, the chamfering assembly includes a second support frame and a mounting frame. A second lead screw is rotatably disposed inside the second support frame. A first slider is threaded on the surface of the second lead screw and slides inside the second support frame. A first telescopic cylinder is fixedly mounted on the upper surface of the first slider. A support frame is fixedly disposed on the upper end of the piston rod of the first telescopic cylinder. The mounting frame is fixedly disposed on the upper end face of the support frame.

[0009] Optionally, drive shafts are symmetrically rotated on both sides of the mounting frame, and support rods are fixedly installed inside the mounting frame. One end of each drive shaft is rotatably engaged with support rods. A motor is fixedly installed on the inner bottom surface of the support frame. The output shaft of the motor passes through the mounting frame and a bevel gear is fixedly installed on its inner surface. A bevel gear is fixedly installed on the surface of the drive shaft inside the mounting frame, and bevel gears mesh with each other.

[0010] Optionally, a connecting cylinder two is fixedly provided at the outer end of the drive shaft. The connecting cylinder two is internally threaded with a connecting shaft, and an annular groove is provided on the surface of the connecting shaft. The connecting cylinder one is rotatably and slidably provided in the annular groove. The connecting cylinder one can be sleeved on the outer surface of the connecting cylinder two and threadedly engaged.

[0011] Optionally, the outer end surface of the connecting shaft is fitted with a chamfered wheel, and an annular clamp is threaded onto the outer end surface of the connecting shaft near the chamfered wheel.

[0012] Optionally, a through groove is provided on the inner side of the support frame one, and a support rod one fixed to the surface of the base plate is symmetrically arranged inside the support frame one. The support rod one is directly opposite the through groove. A rotating shaft passes through the upper end of the support rod one, and both ends of the support rod one pass through the side of the support rod one. At the same time, a rubber wheel one is symmetrically fixed on the surface at this position.

[0013] In summary, compared with the prior art, the crankshaft machining device for refrigeration compressors provided by this utility model has the following beneficial effects:

[0014] 1. In this utility model, after placing both ends of the crankshaft on the surface of the two rubber wheels on both sides, the telescopic cylinder is activated to push the rubber wheels closer to the crankshaft end surface until the spring is compressed to its limit position. Then the switch will contact the support plate, thereby stopping the drive of the telescopic cylinder. At this time, the rubber wheels on both sides fix the crankshaft end position. This method can stably fix crankshafts of different shaft diameters and is convenient and quick.

[0015] 2. In this utility model, the chamfering wheel is raised and lowered by a telescopic cylinder, and the movement of the telescopic cylinder is driven by a lead screw, so as to effectively chamfer the crank arm of the crankshaft. By rotating the lead screw and rotating the crankshaft with a pair of rubber wheels, the crank arm at any position on the crankshaft can be chamfered, which greatly improves the chamfering efficiency of the crankshaft. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the clamping component in this utility model;

[0019] Figure 4 This is a schematic diagram of the chamfering component in this utility model. Figure 1 ;

[0020] Figure 5 This is a schematic diagram of the chamfering component in this utility model. Figure 2 ;

[0021] Figure 6 This is a cross-sectional view of the chamfering component in this utility model;

[0022] Figure 7 In this utility model Figure 6 A magnified view of the details at point A;

[0023] In the diagram: 1. Base plate; 2. Support frame one; 3. Chamfering assembly; 4. Clamping assembly; 5. Crankshaft; 21. Through groove; 211. Support plate one; 212. Motor one; 213. Sliding groove; 22. Lead screw one; 221. Limiting shaft; 222. Motor two; 23. Support rod one; 231. Rotating shaft; 232. Transmission belt; 233. Rubber wheel one; 31. Support frame two; 311. Lead screw two; 312. Slider one; 313. Motor three; 32. Slider two; 33. Telescopic cylinder one; 34. Support frame; 341. Motor 4; 342. Bevel gear 1; 35. Mounting frame; 351. Support rod 2; 36. Connecting shaft; 361. Annular groove; 362. Clamping plate; 364. Connecting cylinder 1; 37. Drive shaft; 371. Bevel gear 2; 372. Connecting cylinder 2; 38. Chamfered wheel; 41. Telescopic cylinder 2; 42. Support plate 2; 43. Support cylinder; 44. Spring; 45. Sliding shaft; 46. Push switch; 47. Support; 471. Fixed shaft; 48. Rubber wheel 2. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] refer to Figure 1-2 A crankshaft machining device for a refrigeration compressor includes a base plate 1, a support frame 2 symmetrically fixed on the upper surface of the base plate 1, a clamping assembly 4 for fixing a crankshaft 5 symmetrically installed inside the support frame 2, and a chamfering assembly 3 for chamfering the crankshaft 5 between the two support frames 2.

[0026] refer to Figure 1-3 The inner side of the support frame 2 is provided with a vertical through groove 21 for easy placement of the crankshaft 5. The support rod 23 is symmetrically arranged inside the support frame 2 and fixed to the surface of the base plate 1. The support rod 23 is directly opposite the through groove 21. The upper end of the support rod 23 has a rotating shaft 231 that can rotate stably at the upper end of the support rod 23. Both ends of the rotating shaft 231 pass through the side of the support rod 23. At the same time, a rubber wheel 233 is symmetrically fixed on the surface at this position. The rubber wheel 233 is used to place the crankshaft 5.

[0027] refer to Figure 2-3 A support plate 211 is fixedly installed on the outer side of the support frame 2. A motor 212 is fixedly installed on the upper surface of the support plate 211. The output shaft of the motor 212 is fixed to the outer end of the rotating shaft 231 on one side. A transmission belt 232 is sleeved on the surface of the two rotating shafts 231. The two rotating shafts 231 are rotated synchronously through the transmission belt 232, which in turn drives the crankshaft 5 placed on the rubber wheel 233 to rotate, thereby changing the chamfer position of the crankshaft 5.

[0028] refer to Figure 2-3 The clamping assembly 4 includes a telescopic cylinder 41 and a support 47. The telescopic cylinder 41 is fixedly installed on the side wall inside the support frame 2 and is located above the rubber wheel 233. A support plate 42 is fixedly installed on the outer end of the piston rod of the telescopic cylinder 41. Two sets of support cylinders 43 are symmetrically arranged between the support plate 42 and the support 47. A sliding shaft 45 is slidably arranged inside the support cylinder 43. The sliding shaft 45 is fixed to the support 47. The support cylinder 43 is fixed to the support plate 42. A spring 44 sleeved on the surface of the sliding shaft 45 is fixedly connected between the outer side of the support cylinder 43 and the support 47.

[0029] refer to Figure 2-3 A rubber wheel 48 is rotatably mounted on the outer end of the support 47, and a push switch 46 is fixedly installed on the outer side of the support 47 opposite to the support plate 42. The push switch 46 is used to control the stop of the telescopic cylinder 41, so as to avoid the rubber wheel 48 from excessively clamping the crankshaft 5 and reducing the service life of the rubber wheel 48.

[0030] Specifically, after placing both ends of the crankshaft 5 on the surfaces of the two rubber wheels 233 on both sides, the telescopic cylinder 41 is activated to push the rubber wheels 48 close to the shaft end surface of the crankshaft 5 until the spring 44 is compressed to its limit position. Then, the switch 46 is pressed to contact the support plate 42, thereby stopping the drive of the telescopic cylinder 41. At this time, the rubber wheels 48 on both sides fix and clamp the shaft end position of the crankshaft 5. Then, the rotating shaft 231 can be driven by the motor 212 to drive the crankshaft 5 to rotate.

[0031] Furthermore, this method allows for the stable and quick clamping of crankshafts 5 with different shaft diameters.

[0032] refer to Figure 1-3 A sliding groove 213 is provided on the outer side of the support frame 2. At the same time, fixed shafts 471 that slide in the sliding groove 213 are symmetrically fixed on both sides of the support 47. The fixed shafts 471 are used to ensure the stability of the support 47 when it moves.

[0033] refer to Figure 1-2 A lead screw 22 and a limiting shaft 221 are provided between the two support frames 2. The lead screw 22 rotates with the two support frames 2, and the limiting shaft 221 is fixedly engaged with the two support frames 2.

[0034] refer to Figure 1-2 On the inner wall of the support frame 2 on one side, a motor 222 with an output shaft fixed to the lead screw 22 is installed, and the rotation of the lead screw 22 is driven by the motor 222.

[0035] refer to Figure 4-7 The chamfering assembly 3 includes a second support frame 31 and a mounting frame 35. The lower surface of the second support frame 31 is symmetrically fixed with two sliders 32. The two sliders 32 are respectively set on the surfaces of the limit shaft 221 and the lead screw 22, and respectively slide and threadedly engage. The movement of the second support frame 31 is driven by the rotation of the lead screw 22.

[0036] refer to Figure 4-7 A lead screw 311 is rotatably installed inside the support frame 31. A slider 312 is threaded on the surface of the lead screw 311 and slides inside the support frame 31. A motor 313 with an output shaft fixed to the lead screw 311 is fixed on the outer side of the support frame 31. The motor 313 drives the lead screw 311 to rotate, thereby driving the slider 312 to move inside the support frame 31.

[0037] refer to Figure 4-7 A telescopic cylinder 33 is fixedly installed on the upper surface of the slider 312. A support frame 34 is fixedly installed on the upper end of the piston rod of the telescopic cylinder 33. The mounting frame 35 is fixedly installed on the upper surface of the support frame 34. The support frame 34 is driven to rise and fall by the telescopic cylinder 33, which in turn drives the mounting frame 35 to move.

[0038] refer to Figure 4-7 The two sides of the mounting frame 35 are symmetrically and rotatably equipped with drive shafts 37, and a second support rod 351 is fixedly installed inside the mounting frame 35. One end of each drive shaft 37 is rotatably engaged with the second support rod 351 to ensure the stability of the drive shaft 37 when it rotates.

[0039] refer to Figure 4-7 A motor 341 is fixedly installed on the inner bottom surface of the support frame 34. The output shaft of the motor 341 passes through the mounting frame 35 and a bevel gear 342 is fixedly installed on its inner surface. A bevel gear 371 is fixedly installed on the surface of the drive shaft 37 located inside the mounting frame 35. The bevel gear 342 meshes with the bevel gear 371. The motor 341 drives the bevel gear 342 to rotate, thereby driving the two drive shafts 37 on the upper side to rotate simultaneously.

[0040] refer to Figure 4-7 A connecting cylinder 372 is fixedly installed at the outer end of the drive shaft 37. A connecting shaft 36 is threaded inside the connecting cylinder 372. An annular groove 361 is opened on the surface of the connecting shaft 36. A connecting cylinder 364 is rotatably and slidably installed in the annular groove 361. The connecting cylinder 364 can be sleeved on the outer surface of the connecting cylinder 372 and threadedly engaged.

[0041] Specifically, after screwing the connecting shaft 36 into the connecting sleeve 372, the connecting sleeve 364 is then screwed to tighten and fix it with the connecting sleeve 372. This further improves the connection stability between the connecting shaft 36 and the connecting sleeve 372 and prevents the connecting sleeve 372 from accidentally separating from the connecting shaft 36 during the rotation of the drive shaft 37.

[0042] refer to Figure 4-7 The outer end surface of the connecting shaft 36 is fitted with a chamfered wheel 38, and an annular clamp 362 is threaded on the outer end surface of the connecting shaft 36 near the chamfered wheel 38. The chamfered wheel 38 is fixed to the surface of the connecting shaft 36 by tightening the annular clamp 362.

[0043] Specifically, the threaded connection facilitates the replacement of the chamfered wheel 38 and the maintenance of the connecting shaft 36.

[0044] Furthermore, by driving the chamfering wheel 38 to rise and fall through the telescopic cylinder 33, and cooperating with the lead screw 311 to drive the telescopic cylinder 33 to move, the crank arm of the crankshaft 5 can be effectively chamfered. Through the rotation of the lead screw 22, in conjunction with the rotation of the crankshaft 5 by the rubber wheel 233, the crank arm at any position on the crankshaft 5 can be chamfered, which greatly improves the chamfering efficiency of the crankshaft 5.

[0045] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0046] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0047] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A crankshaft machining device for a refrigeration compressor, characterized in that, Includes a base plate (1), on the upper surface of which support frames (2) are symmetrically fixedly arranged, and clamping components (4) are symmetrically installed inside the support frames (2). A chamfering component (3) is provided between the two support frames (2). The clamping assembly (4) includes a telescopic cylinder two (41) and a support (47). The telescopic cylinder two (41) is fixedly installed on the side wall inside the support frame one (2). A support plate two (42) is fixedly installed on the outer end of the piston rod of the telescopic cylinder two (41). Two sets of support cylinders (43) are symmetrically arranged between the support plate two (42) and the support (47). A sliding shaft (45) is slidably arranged inside the support cylinder (43). The sliding shaft (45) is fixed to the support (47). The support cylinder (43) is fixed to the support plate two (42). A spring (44) sleeved on the surface of the sliding shaft (45) is fixedly connected between the outer side of the support cylinder (43) and the outer side of the support (47). A rubber wheel two (48) is rotatably arranged on the outer end of the support (47). A push switch (46) is fixedly installed on the outer side of the support (47) at a position opposite to the support plate two (42).

2. The crankshaft machining device for a refrigeration compressor according to claim 1, characterized in that, The chamfering assembly (3) includes a second support frame (31) and a mounting frame (35). A second lead screw (311) is rotatably arranged inside the second support frame (31). A first slider (312) that slides inside the second support frame (31) is threaded on the surface of the second lead screw (311). A first telescopic cylinder (33) is fixedly installed on the upper surface of the first slider (312). A support frame (34) is fixedly installed on the upper end of the piston rod of the first telescopic cylinder (33). The mounting frame (35) is fixedly installed on the upper end face of the support frame (34).

3. The crankshaft machining device for a refrigeration compressor according to claim 2, characterized in that, The mounting frame (35) has drive shafts (37) symmetrically rotated on both sides, and a second support rod (351) is fixedly installed inside the mounting frame (35). One end of each drive shaft (37) is rotated with the second support rod (351). A fourth motor (341) is fixedly installed on the inner bottom surface of the support frame (34). The output shaft of the fourth motor (341) passes through the mounting frame (35) and a first bevel gear (342) is fixedly installed on its inner surface. A second bevel gear (371) is fixedly installed on the surface of the drive shaft (37) inside the mounting frame (35), and the first bevel gear (342) meshes with the second bevel gear (371).

4. The crankshaft machining device for a refrigeration compressor according to claim 3, characterized in that, A connecting cylinder two (372) is fixedly provided at the outer end of the drive shaft (37). A connecting shaft (36) is threaded inside the connecting cylinder two (372), and an annular groove (361) is provided on the surface of the connecting shaft (36). A connecting cylinder one (364) is rotatably and slidably provided in the annular groove (361). The connecting cylinder one (364) can be sleeved on the outer surface of the connecting cylinder two (372) and threadedly engaged.

5. The crankshaft machining device for a refrigeration compressor according to claim 4, characterized in that, The outer end surface of the connecting shaft (36) is fitted with a chamfered wheel (38), and an annular clamp (362) is threadedly provided on the outer end surface of the connecting shaft (36) near the chamfered wheel (38).

6. The crankshaft machining device for a refrigeration compressor according to claim 1, characterized in that, The inner side of the support frame (2) is provided with a through groove (21). A support rod (23) is symmetrically arranged inside the support frame (2) and fixed to the surface of the base plate (1). The support rod (23) is directly opposite the through groove (21). A rotating shaft (231) passes through the upper end of the support rod (23), and both ends of the shaft pass through the side of the support rod (23). At the same time, a rubber wheel (233) is symmetrically fixed on the surface at this position.

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