Compressor crankshaft journal plane grinding clamp

Abstract

The utility model discloses a compressor crankshaft journal plane grinding clamp, which belongs to the technical field of compressor crankshaft processing, and comprises a processing base and a clamping unit movably mounted at the upper end of the processing base, the clamping unit comprises a moving seat slidably mounted at the upper end of the processing base and a sliding block movably mounted at the upper end of the moving seat, the sliding block is adjusted through a telescopic air cylinder installed on one side of the movable base, an output shaft of the telescopic air cylinder is installed on the side face of the sliding block, clamping frames are installed at the upper end of the sliding block, the clamping frames are oppositely arranged for clamping, and when the compressor crankshaft is fixedly polished, the sliding block movably installed inside can be pushed through the telescopic air cylinder to move towards the inner side; the clamping frames are pushed to clamp the shaft body, the symmetrically-arranged clamping frames can be fixed to the two sides of the shaft body correspondingly, the shaft body is centered and fixed, and a machining machine head can conveniently conduct grinding operation on the compressor crankshaft journal.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor crankshaft processing, in particular to a fixture for grinding the plane of the journal of a compressor crankshaft. Background Art

[0002] The crankshaft is a power transmission component of a piston compressor and is the most important component for transmitting motion in a reciprocating air compressor, mainly used for boosting air, natural gas, nitrogen, and other gases. In modern industrial manufacturing, as a key component, the accuracy of the journal of a compressor crankshaft directly affects the overall performance and service life of the compressor.

[0003] In the traditional crankshaft journal grinding process, the fixing and positioning methods of the crankshaft have a crucial impact on the grinding accuracy. In the traditional fixing method, for crankshafts of different sizes and shapes, the adaptability of the fixing device is poor and the positioning is inconvenient. Summary of the Utility Model

[0004] Aiming at the above-mentioned existing technical deficiencies, the purpose of the utility model is to provide a fixture for grinding the plane of the journal of a compressor crankshaft, which fixes the crankshaft by matching a clamping frame and a telescopic cylinder, and can adjust the position of the clamping unit.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions: including

[0006] a processing base, and a clamping unit movably installed on the upper end of the processing base, the clamping unit being movably installed on the upper end of the processing base;

[0007] a clamping unit, the clamping unit includes a moving seat slidably installed on the upper end of the processing base and a slider movably installed on the upper end of the moving seat, the slider being adjusted by a telescopic cylinder installed on one side of the moving seat, the output shaft of the telescopic cylinder being installed on the side of the slider, and a clamping frame being installed on the upper end of the slider, the clamping frames being arranged oppositely for clamping.

[0008] Preferably, the clamping frame includes a first clamping member and a second clamping member, and an empty slot may be formed in the middle of the first clamping member, the width of the empty slot being matched with the width of the second clamping member.

[0009] Preferably, telescopic screws are fixedly installed on the back of both the first clamping member and the second clamping member, the telescopic screws passing through a mounting seat fixedly installed on the upper end of the slider for installation, and an adjusting part being fixedly installed inside the mounting seat.

[0010] Preferably, both the first clamping member and the second clamping member are limited by limiting rods installed on both sides, the limiting rods passing through the adjusting part and the slot holes formed on the side of the mounting seat for installation.

[0011] Preferably, a worm gear is movably installed inside the housing of the adjusting part. A threaded hole is provided inside the worm gear and is matched with the thread of the telescopic screw rod. Both sides of the worm gear are installed inside the housing through bearings. Worm shafts are meshingly installed on both sides of the worm gear. Both ends of the worm shafts are installed and positioned through bearings and are connected to the output end of the driving motor.

[0012] Preferably, fixing brackets are fixedly installed on both sides of the processing base, and grooves are provided at the upper ends of the fixing brackets.

[0013] Preferably, an adjusting member is fixedly installed at the lower end of the moving seat. The lower end of the adjusting member is driven and adjusted through a driving part. A rotating wheel is installed inside the adjusting member. The rotating wheel is movably installed inside the inner cavity of the adjusting member through a bearing. The rotating wheel is driven through a transmission belt arranged around the upper end.

[0014] Preferably, cleaning brushes are fixedly installed at both end parts on both sides of the rotating wheel. The cleaning brushes are supported by an arc-shaped plate fixedly installed outside. A magnetic plate is also fixedly installed on one side of the cleaning brush, and the magnetic plate is arranged inside the arc-shaped plate.

[0015] Preferably, a moving cavity is provided inside the processing base. The adjusting member is limited through a rod body fixedly installed inside the moving cavity. A positioning screw rod is movably installed in the middle of the moving cavity. The positioning screw rod is threadedly installed inside a threaded hole provided inside the rotating wheel.

[0016] Preferably, a dust collection groove is slidably installed at the lower end of the moving cavity. The bottom cavity plate body of the dust collection groove can be made of a magnetic material.

[0017] 1. The beneficial effects of the present utility model are as follows: When fixedly grinding the compressor crankshaft, the slider movably installed inside can be pushed inward by the telescopic cylinder to push the clamping bracket, thereby clamping the shaft body. The symmetrically arranged clamping brackets can be respectively fixed on both sides of the shaft body and center and fix the shaft body, facilitating the grinding operation of the machining head on the journal of the compressor crankshaft.

[0018] 2. The beneficial effects of the present utility model are as follows: When the clamping unit fixes the shaft body, the driving part can be adjusted according to the shape and size of the crankshaft to drive the rotating wheel inside the adjusting member to rotate. Then, the adjusting member can move along the moving groove provided at the upper end of the processing base on the upper end of the positioning screw rod, so that the clamping units on both sides are arranged staggeredly, facilitating the positioning of the crankshaft with a smaller size and avoiding the situation that the first clamping member and the second clamping member on both sides have movement obstacles and are not convenient for clamping and fixing. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure provided by the embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the clamping unit provided by the embodiment of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the clamping bracket provided by the embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of the planar structure of the clamping bracket provided by the embodiment of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the adjusting part provided by the embodiment of the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the adjusting member provided by the embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of the internal structure of the processing base provided by the embodiment of the present invention.

[0027] Figure 8 provided by the embodiment of the present invention Figure 7 The enlarged structure schematic diagram at position A.

[0028] Explanation of reference numerals:

[0029] 100 - processing base; 110 - moving groove; 120 - fixing frame; 130 - moving cavity; 140 - positioning screw; 150 - dust collection groove; 200 - clamping unit; 210 - moving seat; 220 - slider; 230 - telescopic cylinder; 240 - mounting seat; 250 - clamping bracket; 251 - first clamping member; 252 - second clamping member; 253 - empty groove; 254 - telescopic screw; 260 - adjusting part; 261 - worm gear; 262 - worm; 270 - adjusting member; 271 - rotating wheel; 272 - transmission belt; 273 - magnetic plate; 274 - cleaning brush; 280 - driving part. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1

[0032] As Figures 1 to 3 shown, the present invention provides a grinding flat fixture for the journal of a compressor crankshaft, including a processing base 100 for installing parts for fixing the compressor crankshaft, and a clamping unit 200 movably installed at the upper end of the processing base 100 for fixing the compressor crankshaft. The clamping unit 200 is movably installed at the upper end of the processing base 100.

[0033] The clamping unit 200 includes a moving seat 210 slidably installed at the upper end of the processing base 100 for supporting and positioning, and a slider 220 movably installed at the upper end of the moving seat 210 for sliding adjustment and clamping. The slider 220 is adjusted by a telescopic cylinder 230 installed on one side of the moving seat 210 for adjusting its position. The output shaft of the telescopic cylinder 230 is installed on the side of the slider 220. A clamping frame 250 for clamping and fixing the compressor crankshaft is installed at the upper end of the slider 220. The clamping frames 250 are arranged oppositely for clamping.

[0034] When fixing and grinding the compressor crankshaft, the telescopic cylinder 230 can be used to push the internally movably installed slider 220 to move inward, push the clamping frame 250, and then clamp the shaft body. The symmetrically arranged clamping frames 250 can be respectively fixed on both sides of the shaft body, and the shaft body can be centered and fixed, which is convenient for the processing head to grind the journal of the compressor crankshaft.

[0035] Fixed frames 120 for temporarily placing and supporting the compressor crankshaft are fixedly installed on both sides of the processing base 100. A groove for placing the crankshaft is provided at the upper end of the fixed frame 120, which is convenient for placing the crankshaft. It can be placed on the upper end of the fixed frame 120 before clamping the compressor crankshaft, which is convenient for the clamping operation of the clamping frame 250 and does not require manual holding or tool assistance.

[0036] The clamping frame 250 includes a first clamping member 251 and a second clamping member 252 for fixing the crankshaft. An empty slot 253 facilitating the passage of the second clamping member 252 may be provided in the middle of the first clamping member 251. The width of the empty slot 253 matches the width of the second clamping member 252. During the process of fixing the shaft body, the second clamping member 252 can pass through the empty slot 253 of the first clamping member 251, thereby increasing the shaft body positioning range of the first clamping member 251 and the second clamping member 252, and enabling the fixing of shaft bodies of different sizes, with stronger adaptability.

[0037] Embodiment Two

[0038] As Figures 2 to 6 shown, in order to adapt to the fixing of the irregular surface of the compressor crankshaft, telescopic screws 254 for positioning and adjusting the first clamping member 251 and the second clamping member 252 are fixedly installed on the back surfaces of the first clamping member 251 and the second clamping member 252. The telescopic screws 254 are installed through the mounting seat 240 fixedly installed at the upper end of the slider 220. An adjusting portion 260 for adjusting the position of the clamping frame 250 is also fixedly installed inside the mounting seat 240 for adjusting the position of the telescopic screw 254.

[0039] A worm gear 261 for adjusting the position of the telescopic screw 254 is movably installed inside the housing of the adjusting portion 260. A threaded hole for installing the telescopic screw 254 is provided inside the worm gear 261 and matches the thread of the telescopic screw 254. Both sides of the worm gear 261 are installed inside the housing through bearings. Worm gears 262 for rotationally adjusting the worm gear 261 are meshingly installed on both sides of the worm gear 261. Both ends of the worm gear 262 are installed and positioned through bearings and are connected to the output end of the drive motor.

[0040] When fixing the shaft body, the drive motor can be driven to drive the worm gear 262 to rotate, thereby driving the meshingly installed worm gear 261 on one side to rotate. The telescopically screwed telescopic screw 254 moves during the rotation of the worm gear 261, driving the clamping frame 250 fixedly installed inside to move, enabling the fixing of crankshaft parts of different sizes on both sides, with a wider adjustment range and stronger adaptability.

[0041] Both the first clamping member 251 and the second clamping member 252 are limited by the limiting rods installed on both sides. The limiting rods are installed through the slot holes provided on the sides of the adjusting portion 260 and the mounting seat 240 to prevent rotational deviation of the first clamping member 251 and the second clamping member 252 during the movement of the telescopic screw 254.

[0042] Embodiment Three

[0043] As Figures 6 to 8As shown in the figure, in order to increase the range of clamping the crankshaft, an adjusting member 270 for adjusting the position of the moving seat 210 is fixedly installed at the lower end of the moving seat 210. The lower end of the adjusting member 270 is driven and adjusted by a driving portion 280. A rotatable rotating wheel 271 is installed inside the adjusting member 270. The rotating wheel 271 is movably installed in the inner cavity of the adjusting member 270 through a bearing. The rotating wheel 271 is driven by a transmission belt 272 arranged around the upper end. The driving portion 280 is composed of a driving motor and a transmission wheel. The transmission belt 272 is arranged around the upper end of the transmission wheel for transmission.

[0044] A moving cavity 130 for installing the adjusting member 270 is provided in the inner cavity of the processing base 100. The adjusting member 270 is limited by a rod body fixedly installed inside the moving cavity 130. A positioning screw 140 for driving the adjusting member 270 installed inside to move is movably installed in the middle of the moving cavity 130. The positioning screw 140 is threadedly installed inside a threaded hole provided inside the rotating wheel 271.

[0045] When the clamping unit 200 fixes the shaft body, the driving portion 280 can be adjusted according to the shape and size of the crankshaft, driving the rotating wheel 271 inside the adjusting member 270 to rotate. Furthermore, the adjusting member 270 can move along a moving groove 110 provided at the upper end of the processing base 100 above the positioning screw 140, so that the clamping units 200 on both sides are arranged staggeredly, facilitating the positioning of a crankshaft with a smaller size and avoiding the situation where the first clamping member 251 and the second clamping member 252 on both sides encounter movement obstacles and are not convenient for clamping and fixing.

[0046] Cleaning brushes 274 for cleaning the positioning screw 140 threadedly installed inside are fixedly installed at both end portions on the two sides of the rotating wheel 271. The cleaning brushes 274 are supported by an arc-shaped plate fixedly installed outside. A magnetic plate 273 for sweeping debris is also fixedly installed on one side of the cleaning brush 274. The magnetic plate 273 is arranged inside the arc-shaped plate. When the rotating wheel 271 rotates to adjust the position, the cleaning brush 274 installed at the upper end cleans the positioning screw 140, brushing off the debris falling from the upper end of the positioning screw 140, avoiding the debris getting stuck in the gap of the positioning screw 140 and causing wear to the inner hole of the rotating wheel 271 and the positioning screw 140. If the loosened debris does not fall off in time, the magnetic plate 273 installed inside can adsorb it again for convenient use.

[0047] A dust collecting groove 150 that can be pulled out by sliding is installed at the lower end of the moving cavity 130. The bottom cavity plate body of the dust collecting groove 150 can be made of a magnetic material, facilitating the collection of grinding debris.

[0048] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. Compressor crankshaft journal surface grinding fixture, characterized in that: include: A processing base, and a clamping unit movably mounted on the upper end of the processing base, wherein the clamping unit is movably mounted on the upper end of the processing base; The clamping unit includes a moving seat slidably mounted on the upper end of the processing base and a slider movably mounted on the upper end of the moving seat. The slider is adjusted by a telescopic cylinder mounted on one side of the moving seat. The output shaft of the telescopic cylinder is mounted on the side of the slider. A clamping frame is mounted on the upper end of the slider, and the clamping frames are arranged oppositely for clamping.

2. The compressor crankshaft journal surface grinding fixture according to claim 1, characterized in that: The clamping frame comprises a first clamping member and a second clamping member. A hollow groove may be opened in the middle of the first clamping member, and the width of the hollow groove matches the width of the second clamping member.

3. The compressor crankshaft journal surface grinding fixture according to claim 2, characterized in that: A telescopic screw is fixedly installed on the back of the first clamping member and the second clamping member. The telescopic screw passes through a mounting seat fixedly installed on the upper end of the sliding block for installation. An adjusting part is also fixedly installed on the inner side of the mounting seat.

4. The compressor crankshaft journal surface grinding fixture according to claim 3, characterized in that: The first clamping member and the second clamping member are both limited by limiting rods installed on both sides, and the limiting rods are installed through slots opened on the side surfaces of the adjustment portion and the mounting seat.

5. The compressor crankshaft journal surface grinding fixture according to claim 4, characterized in that: A worm wheel is movably installed inside the shell of the adjustment part, and a threaded hole is opened inside the worm wheel, which matches the thread of the telescopic screw. The two sides of the worm wheel are installed inside the shell through bearings, and worms are meshingly installed on both sides of the worm wheel. The two ends of the worm are installed and positioned by bearings and connected to the output end of the drive motor.

6. The compressor crankshaft journal surface grinding fixture according to claim 5, characterized in that: Fixing frames are fixedly installed on both sides of the processing base, and grooves are arranged on the upper ends of the fixing frames.

7. The compressor crankshaft journal surface grinding fixture according to claim 6, characterized in that: An adjusting member is fixedly installed at the lower end of the movable seat, and the lower end of the adjusting member is driven and adjusted by a driving part. A rotating wheel is installed inside the adjusting member, and the rotating wheel is movably installed in the inner cavity of the adjusting member through a bearing. The rotating wheel is driven by a transmission belt installed around the upper end.

8. The compressor crankshaft journal surface grinding fixture according to claim 7, characterized in that: Cleaning brushes are fixedly mounted on both side ends of the rotating wheel, and the cleaning brushes are supported by an arc-shaped plate fixedly mounted externally. A magnetic plate is also fixedly mounted on one side of the cleaning brush, and the magnetic plate is arranged on the inner side of the arc-shaped plate.

9. The compressor crankshaft journal surface grinding fixture according to claim 8, characterized in that: The inner cavity of the processing base is provided with a movable cavity, the adjusting member is limited by a rod body fixedly installed inside the movable cavity, a positioning screw is movably installed in the middle of the movable cavity, and the positioning screw is threadedly installed in a threaded hole opened inside the rotating wheel.

10. The compressor crankshaft journal surface grinding fixture according to claim 9, characterized in that: A dust collecting groove is slidably mounted on the lower end of the movable cavity, and a bottom cavity plate of the dust collecting groove can be made of magnetic material.

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