CN113305597A

CN113305597A - Rear axle machine tool

Info

Publication number: CN113305597A
Application number: CN202110595014.2A
Authority: CN
Inventors: 茌庚申
Original assignee: Xuzhou Yiteng Electromechanical Technology Co ltd
Current assignee: Xuzhou Yiteng Electromechanical Technology Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-08-27

Abstract

The invention belongs to the technical field of rear axle processing equipment, and particularly relates to a rear axle processing machine tool, which comprises a machine tool; a placing table is fixedly connected in the machine tool, and processing units are arranged on two sides of the placing table; a first cavity is formed in the placing table, and a threaded rod is rotatably connected to the inner wall of the first cavity; the side wall of the placing table is fixedly connected with a motor, and the output end of the motor is fixedly connected with a threaded rod; the threaded rod is provided with a pair of symmetrically distributed opposite threads, and the threaded rod is in threaded connection with a pair of first sliding blocks; a first through groove is formed in the top end of the first cavity; the invention provides a rear axle processing machine tool, which aims to solve the problems that when shaft heads at two ends of a rear axle are fixedly processed, because a rear axle package is generally circular, the center alignment point of a clamp and the center of the axle package needs to be adjusted for multiple times, the center points of the clamp and the axle package coincide, the fixing time of the rear axle is wasted, the alignment precision is low, and the processing precision of the shaft heads at two ends of the rear axle is influenced.

Description

Rear axle machine tool

Technical Field

The invention belongs to the technical field of rear axle processing equipment, and particularly relates to a rear axle processing machine tool.

Background

The automobile rear axle is a basic part for installing a main speed reducer, a differential mechanism, a half shaft, a hub and a suspension, and mainly has the functions of supporting and protecting the main speed reducer, the differential mechanism, the half shaft and the like.

Some technical schemes related to rear axle processing equipment technology also appear in the prior art, if a chinese patent with application number 2020107873413 discloses rear axle housing processing technology in the car, be applied to processing the semi-manufactured goods of rear axle housing in the car, the semi-manufactured goods of rear axle housing in the car include the bridge package and two spindle noses that are connected through the linking arm with the both ends of bridge package respectively, rear axle housing processing technology in the car includes following step: step 100, fixing a semi-finished product of a middle and rear axle housing of an automobile on a clamp; and step 200, boring the two shaft heads. The application provides a rear-axle housing processing technology in car is with rear-axle housing semi-manufactured goods mounting fixture in the car motionless, and adopts cutter boring spindle nose to carry out machine tooling, therefore improved the machining precision to the axiality in the course of working has been guaranteed, in this rear-axle housing processing technology in car promptly, replaces the combination processing technology of turning and grinding in the past with the boring, and technology is simpler, and the equipment that involves still less, and the machining precision is higher moreover.

In the prior art, when the axle heads at two ends of the rear axle are fixedly machined, because a rear axle package is generally circular, the center of a clamp and the center alignment point of the axle package need to be adjusted for multiple times, and the center points of the clamp and the center of the axle package coincide, so that the fixing time of the rear axle is wasted, the alignment precision is low, and the machining precision of the axle heads at two ends of the rear axle is influenced.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problems that when the axle heads at two ends of the rear axle are fixedly machined, the center of a clamp and the center alignment point of an axle package need to be adjusted for multiple times because the axle package of the rear axle is generally circular, the center points of the clamp and the axle package coincide, the fixing time of the rear axle is wasted, the alignment accuracy is low, and the machining accuracy of the axle heads at two ends of the rear axle is influenced, the invention provides the rear axle machining machine tool.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a rear axle processing machine tool, which comprises a machine tool; a placing table is fixedly connected in the machine tool, and processing units are arranged on two sides of the placing table; a first cavity is formed in the placing table, and a threaded rod is rotatably connected to the inner wall of the first cavity; the side wall of the placing table is fixedly connected with a motor, and the output end of the motor is fixedly connected with a threaded rod; the threaded rod is provided with a pair of symmetrically distributed opposite threads, and the threaded rod is in threaded connection with a pair of first sliding blocks; a first through groove is formed in the top end of the first cavity; the first sliding block is fixedly connected with an L-shaped rod, the L-shaped rod penetrates through the first through groove and extends out of the placing table, and the L-shaped rod is connected to the first through groove in a sliding mode; the pair of L-shaped rods is symmetrical relative to the center of the placing table; the end part of the L-shaped rod, which is positioned outside the placing table, is fixedly connected with an arc-shaped plate through a moving rod; in the prior art, when the axle heads at two ends of the rear axle are fixed, because the axle head at two ends of the rear axle is generally circular, the alignment point of the center of the clamp and the center of the axle package needs to be adjusted for a plurality of times, the center points of the clamp and the axle package coincide, so that the fixing time of the rear axle is wasted, the alignment precision is low, and the processing precision of the axle head at two ends of the rear axle is influenced, therefore, when the invention works, a machine tool door is opened, then the rear axle package needing to be processed is covered with a pair of arc-shaped plates, then the motor is started, the motor drives the threaded rod to rotate, because the threaded rod is provided with a pair of opposite threads, the threaded rod drives a pair of first slide blocks to move in opposite directions when rotating, the first slide blocks move through the L-shaped rod to drive the arc-shaped plates to move in opposite directions, the arc-shaped surfaces of the pair of arc-shaped plates are attached to the inner wall of the axle package, then the motor is continuously started, the arc-shaped plates can continuously move, and the arc-shaped plates move in the moving process, the arc face of arc can aim at the coincidence with rear axle package central point and the symmetry point of a pair of arc, lets the rear axle at this moment fix at the processing central point, once only aims at the fixed time of practicing thrift the rear axle, and aims at the precision height, reduces the machining precision error of rear axle both ends spindle nose, and can be suitable for the alignment of the rear axle package of not unidimensional fixed, increase application scope.

Preferably, a fixed block is fixedly connected to the end part of the L-shaped rod positioned outside the placing table, and a second groove is formed in the top end of the fixed block; support plates are fixedly connected to the inner walls of the two sides of the second groove; one end of the L-shaped plate is connected to the inner wall of the second groove in a sliding mode, and the end portion, located in the second groove, of the L-shaped plate is fixedly connected to the support plate through a spring; a first groove is formed in the end part, located outside the placing table, of the L-shaped rod; one end of the moving rod penetrates through the fixed block and the second groove and is connected to the inner wall of the first groove in a sliding mode, and the end portion of the moving rod is fixedly connected to the bottom of the first groove through a spring; the arc-shaped plate is fixedly connected to the end part of the moving rod far away from the first groove; the movable rod drives the L-shaped plate to move through the pulling assembly; the during operation, when being fixed to the rear axle because of the arc, relative displacement takes place for the arc can with rear axle package, let the central point of rear axle package and processing central point align, the surface of event arc is comparatively smooth, in order to prevent to shake at machine tool machining and lead to arc and rear axle package to take place to slide from top to bottom, influence rear axle processing, the event removes rear axle package center department and the coincidence back of machining center at the arc, then continue to start the motor, the carriage release lever can be moving to first recess tank bottom department this moment, the carriage release lever removes the L shaped plate through the pulling subassembly in the removal process, rear axle package opening face department can be cliied, fix from top to bottom the rear axle, avoid lathe work vibrations to lead to the rear axle gliding condition from top to bottom to appear.

Preferably, the pulling assembly comprises a rack plate; a rack plate is fixedly connected to the side wall of the top end of the movable rod; the second groove is rotatably connected with a first rotating shaft; a first gear is fixedly connected to the first rotating shaft; the first gear and the rack plate are meshed with each other; a pull rope is arranged on the first rotating shaft; one end of the pull rope is fixedly connected to the first rotating shaft, and the other end of the pull rope is fixedly connected to the end part of the L-shaped plate, which is positioned on the second groove; when the movable rod moves towards the bottom of the first groove, the movable rod can drive the first rotating shaft to rotate through mutual meshing of the rack plate and the first gear, the pull rope can be tightened when the first rotating shaft rotates, the pull rope can drive the L-shaped plate to move towards the bottom of the second groove by tightening and pulling back, and the L-shaped plate can clamp the opening face of the rear axle bag.

Preferably, a group of arc-shaped rubber pads is fixedly connected to the side wall of the bottom end of the L-shaped plate; during operation, the arc rubber pad of L shaped plate has elasticity, can place the L shaped plate and avoid appearing pressing from both sides the trace when carrying out the centre gripping to the bridging bag, and the arc rubber pad can increase the stationary force of L shaped plate to the bridging bag.

Preferably, a first air outlet cavity is formed in the L-shaped plate; a group of first air outlet holes are formed in the side wall of the bottom end of the L-shaped plate, and the first air outlet holes are communicated with the first air outlet cavity; the first air outlet holes and the arc-shaped rubber pads are arranged in a staggered manner; a first air bag is arranged between the side wall of the bottom end of the L-shaped rod and the top end of the fixed block; the first air bag is communicated with the first air outlet cavity; during operation, when the L-shaped plate is pulled by the stay cord and moves to the bottom direction of the second groove, the first air bag can be extruded, the first air bag can enter the first air outlet cavity through the hose when being extruded, then the first air outlet is sprayed out, the sprayed gas can clean the clamping position of the L-shaped plate, the tidiness of the clamping surface is ensured, and the influence of impurities on the clamping effect of the L-shaped plate is avoided.

Preferably, a pair of supporting seats symmetrical relative to the first through groove are fixedly connected to the placing table, and the supporting seats are provided with placing grooves; third grooves are formed in the side walls of the two sides of the placing groove, clamping blocks are fixedly connected to the bottoms of the third grooves through springs, and the clamping blocks are pushed through pushing assemblies; when the rear axle package is placed on the placing platform, when the rear axle package covers a pair of arc-shaped plates, the bridge arm can be positioned in the placing groove and clamped by a pair of clamping blocks, the bridge arm is in a clamping state, and the shaft heads of the bridge arms at the two ends and the left and right processing units are in an aligned state at the moment through the pushing assembly on the clamping blocks, so that the bridge arm does not need to be additionally adjusted, and the processing time is further saved.

Preferably, the pushing assembly comprises a trapezoidal block and a power unit; the section of the clamping block is trapezoidal, and the trapezoidal inclined plane of the clamping block is close to the bottom of the third groove; the bottom of the third groove is connected with a trapezoidal block in a sliding manner, and the inclined plane of the trapezoidal block and the inclined plane of the clamping block are in parallel contact with each other; the trapezoidal block moves through the power unit; when the processing device works, the inclined surfaces of the trapezoidal blocks are in parallel contact with the inclined surfaces of the clamping blocks, the power unit pulls the trapezoidal blocks to move downwards to push the clamping blocks to move oppositely, the pair of clamping blocks push the bridge arms, the horizontal central lines of the bridge arms and the horizontal central lines of the processing unit are coincided, and the processing precision of the shaft heads at two ends of the rear axle is further improved.

Preferably, the power unit includes a fourth groove; the side walls of the two sides of the placing groove are provided with fourth grooves, the bottoms of the fourth grooves are connected with second sliding blocks in a sliding mode, and the second sliding blocks are fixedly connected to the side walls of the bottom ends of the fourth grooves through springs; a fixed column is fixedly connected between the opposite surfaces of the pair of second sliding blocks, and the center of the fixed column is rotatably connected with a roller; the fourth groove is positioned below the third groove; the top end of the second sliding block is fixedly connected with a connecting column, and the connecting column extends into the third groove and is fixedly connected to the bottom end of the trapezoidal block; the during operation, because of at rear axle package center with process alignment, the rear axle can appear removing on the standing groove of supporting seat, in order to avoid the removal that the frictional force on placing the seat influences the rear axle, the event is provided with the gyro wheel on the standing groove, the rear axle rotates on the gyro wheel and can reduce frictional force, and can cushion through the spring on the second slider when the rear axle is placed on the gyro wheel of standing groove, play the buffering guard action to the rear axle, and receive rear axle gravity at the gyro wheel and push down, can promote the second slider and remove, the second slider removes the relative movement who drives a pair of clamp splice, it is fixed to carry out the position alignment to the bridge arm.

Preferably, a second cavity is formed in the clamping block; a fixed rod is fixedly connected to the bottom of the third groove, penetrates through the clamping block, and is fixedly connected to the end part extending into the second cavity; a second air bag is arranged between the pressure plate and the side wall of the second cavity close to the bottom of the third groove; a second air outlet cavity is formed in the clamping block; a group of second air outlet holes are formed in the side wall, far away from the bottom of the third groove, of the clamping block, and the second air outlet holes are communicated with the second air outlet cavity; the second air bag is communicated with the second air outlet cavity through a hose; when the clamping block moves in the direction away from the bottom of the third groove, the pressing plate can extrude the second air bag, the second air bag is extruded by the extrusion gas, enters the second air outlet cavity through the hose and is sprayed out of the second air outlet hole, the sprayed gas can firstly remove impurities from the clamping position of the bridge arm, and the clamping effect of the clamping block on the bridge arm is guaranteed.

Preferably, the opposite surfaces of the pair of clamping blocks are corrugated surfaces; the second air outlet hole is formed in the groove of the corrugated surface; when the bridge arm cleaning device works, the opposite surfaces of the pair of clamping blocks are arranged to be corrugated surfaces, the second air outlet holes are formed in the grooves of the corrugated surfaces, the corrugated surfaces of the clamping blocks are close to the side walls of the bridge arm, sprayed air can be sprayed out towards two sides along the corrugated grooves of the corrugated surfaces, and the sprayed air flow can increase the cleaning surface of the bridge arm.

The invention has the following beneficial effects:

1. according to the rear axle processing machine tool, the arc-shaped surface of the arc-shaped plate can align and coincide the central point of the rear axle package and the symmetrical points of the pair of arc-shaped plates through the movement of the arc-shaped plate, so that the rear axle at the moment is fixed at the processing central point, the fixing time of the rear axle is saved through one-time alignment, the alignment precision is high, the processing precision error of axle heads at two ends of the rear axle is reduced, the rear axle processing machine tool can be suitable for aligning and fixing rear axle packages with different sizes, and the application range is enlarged.

2. According to the rear axle processing machine tool, the L-shaped plate can be moved by the pulling assembly in the moving process of the moving rod, the opening surface of the rear axle packet can be clamped, the rear axle is fixed up and down, and the situation that the rear axle slides up and down due to the working vibration of the machine tool is avoided.

3. According to the rear axle processing machine tool, when the center of the rear axle package is aligned with the processing, the rear axle can move on the placing groove of the supporting seat, so that the friction force on the placing seat is prevented from influencing the movement of the rear axle, the placing groove is provided with the roller, the friction force can be reduced when the rear axle rotates on the roller, and the rear axle is buffered through the spring on the second sliding block when placed on the roller of the placing groove, so that the rear axle is buffered and protected.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a top view of the placement table;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is an enlarged view at C of FIG. 3;

FIG. 5 is an enlarged view at D of FIG. 3;

FIG. 6 is a cross-sectional view taken at B-B of FIG. 2;

FIG. 7 is an enlarged view at E of FIG. 6;

FIG. 8 is a cross-sectional view of the clamp block;

in the figure: 1. a machine tool; 11. a placing table; 12. a processing unit; 13. an electric motor; 14. a threaded rod; 15. a first cavity; 16. a first slider; 17. a first through groove; 18. an L-shaped rod; 19. an arc-shaped plate; 191. a travel bar; 2. a fixed block; 21. an L-shaped plate; 22. a first groove; 23. a rack plate; 24. a first gear; 25. a first rotating shaft; 26. pulling a rope; 27. a support plate; 3. a second groove; 31. a first air outlet cavity; 32. an arc-shaped rubber pad; 33. a first air outlet hole; 34. a first air bag; 4. a supporting seat; 41. a placement groove; 42. a third groove; 43. a clamping block; 44. fixing a column; 45. a roller; 46. a fourth groove; 47. a second slider; 48. a trapezoidal block; 5. a second cavity; 51. pressing a plate; 52. a second air bag; 53. fixing the rod; 54. a second air outlet cavity; 55. a corrugated surface; 56. and a second air outlet.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The first embodiment is as follows:

as shown in fig. 1 to 7, the rear axle processing machine according to the present invention includes a machine tool 1; a placing table 11 is fixedly connected in the machine tool 1, and processing units 12 are arranged on two sides of the placing table 11; a first cavity 15 is formed in the placing table 11, and a threaded rod 14 is rotatably connected to the inner wall of the first cavity 15; a motor 13 is fixedly connected to the side wall of the placing table 11, and the output end of the motor 13 is fixedly connected with a threaded rod 14; a pair of opposite threads which are symmetrically distributed is arranged on the threaded rod 14, and a pair of first sliding blocks 16 are connected to the threaded rod 14 in a threaded manner; a first through groove 17 is formed at the top end of the first cavity 15; an L-shaped rod 18 is fixedly connected to the first sliding block 16, the L-shaped rod 18 penetrates through the first through groove 17 and extends out of the placing table 11, and the L-shaped rod 18 is connected to the first through groove 17 in a sliding mode; a pair of said L-shaped bars 18 is centrosymmetric with respect to the placing table 11; the end part of the L-shaped rod 18 positioned outside the placing table 11 is fixedly connected with an arc-shaped plate 19 through a moving rod 191; in the prior art, when the axle heads at two ends of the rear axle are fixed, because the rear axle package is generally circular, the alignment point of the center of the clamp and the center of the axle package needs to be adjusted for many times, the central points of the clamp and the axle package coincide, so that the fixing time of the rear axle is wasted, the alignment precision is low, and the processing precision of the axle heads at two ends of the rear axle is influenced, therefore, when the invention works, a door of a machine tool 1 is opened, then the rear axle package to be processed is covered with a pair of arc-shaped plates 19, then the motor 13 is started, the motor 13 drives the threaded rod 14 to rotate, because the threaded rod 14 is provided with a pair of opposite threads, the pair of first sliding blocks 16 are driven to move towards opposite directions when the threaded rod 14 rotates, the first sliding blocks 16 move through the L-shaped rods 18 to drive the arc-shaped plates 19 to move towards opposite directions, the arc-shaped surfaces of the pair of arc-shaped plates 19 are attached to the inner wall of the axle package, then the motor 13 is continuously started, and the arc-shaped plates 19 can continuously move, in the moving process of the arc-shaped plate 19, the arc-shaped surface of the arc-shaped plate 19 aligns and coincides the central point of the rear axle package and the symmetrical points of the pair of arc-shaped plates 19, so that the rear axle at the moment is fixed at the processing central point, the fixing time of the rear axle is saved by one-time alignment, the alignment precision is high, the processing precision errors of the axle heads at two ends of the rear axle are reduced, the rear axle package can be suitable for aligning and fixing the rear axle packages with different sizes, and the application range is enlarged.

The end part of the L-shaped rod 18, which is positioned outside the placing table 11, is fixedly connected with a fixed block 2, and the top end of the fixed block 2 is provided with a second groove 3; support plates 27 are fixedly connected to the inner walls of the two sides of the second groove 3; one end of the L-shaped plate 21 is slidably connected to the inner wall of the second groove 3, and the end part of the L-shaped plate 21, which is located in the second groove 3, is fixedly connected to the support plate 27 through a spring; a first groove 22 is formed in the end part of the L-shaped rod 18, which is positioned outside the placing table 11; one end of the moving rod 191 penetrates through the fixed block 2 and the second groove 3 and is connected to the inner wall of the first groove 22 in a sliding manner, and the end part of the moving rod 191 is fixedly connected to the bottom of the first groove 22 through a spring; the arc-shaped plate 19 is fixedly connected to the end part of the moving rod 191 far away from the first groove 22; the moving rod 191 drives the L-shaped plate 21 to move through a pulling component; during operation, when being fixed to the rear axle because of arc 19, arc 19 can take place relative displacement with the rear axle package, let the central point of rear axle package aim at with the processing central point, so the surface of arc 19 is comparatively smooth, in order to prevent to shake at 1 processing of lathe and lead to arc 19 and rear axle package to take place to slide from top to bottom, influence rear axle processing, so move at arc 19 with rear axle package center department and processing center coincidence back, then continue to start motor 13, the carriage release lever 191 can be moving to first recess 22 tank department this moment, the carriage release lever 191 removes the in-process can be through pulling the subassembly with L shaped plate 21 removal, can carry rear axle package opening face department, fix from top to bottom the rear axle, avoid 1 working vibrations of lathe to lead to the rear axle the circumstances that the upper and lower slip appears.

The pulling assembly comprises a rack plate 23; a rack plate 23 is fixedly connected to the side wall of the top end of the moving rod 191; the second groove 3 is rotatably connected with a first rotating shaft 25; a first gear 24 is fixedly connected to the first rotating shaft 25; the first gear 24 and the rack plate 23 are engaged with each other; a pull rope 26 is arranged on the first rotating shaft 25; one end of the pull rope 26 is fixedly connected to the first rotating shaft 25, and the other end of the pull rope is fixedly connected to the end part of the L-shaped plate 21, which is positioned on the second groove 3; during operation, when the moving rod 191 moves towards the bottom of the first groove 22, the rack plate 23 and the first gear 24 are meshed with each other to drive the first rotating shaft 25 to rotate, the first rotating shaft 25 rotates to tighten the pull rope 26, and the pull rope 26 tightens and pulls back to drive the L-shaped plate 21 to move towards the bottom of the second groove 3, so that the L-shaped plate 21 clamps the opening surface of the rear axle packet.

A group of arc-shaped rubber pads 32 are fixedly connected to the side wall of the bottom end of the L-shaped plate 21; during operation, the arc-shaped rubber pad 32 of L shaped plate 21 has elasticity, can place L shaped plate 21 and avoid appearing the clamp mark when carrying out the centre gripping to the bridging bag, and arc-shaped rubber pad 32 can increase the stationary force of L shaped plate 21 to the bridging bag.

A first air outlet cavity 31 is formed in the L-shaped plate 21; a group of first air outlet holes 33 are formed in the side wall of the bottom end of the L-shaped plate 21, and the first air outlet holes 33 are communicated with the first air outlet cavity 31; the first air outlet holes 33 and the arc-shaped rubber pads 32 are arranged in a staggered manner; a first air bag 34 is arranged between the side wall of the bottom end of the L-shaped rod 18 and the top end of the fixed block 2; the first air bag 34 and the first air outlet cavity 31 are communicated with each other; the during operation, when L shaped plate 21 was pulled by stay cord 26 and is removed to 3 tank bottoms directions of second recess, can extrude first gasbag 34, first gasbag 34 receives that extrusion gas can get into first air outlet chamber 31 through the hose in, then spout through first venthole 33, and the spun gas can clean L shaped plate 21's clamping position department, guarantees the clean and tidy of clamping face, avoids impurity to influence L shaped plate 21's clamping effect.

A pair of supporting seats 4 symmetrical relative to the first through groove 17 are fixedly connected to the placing table 11, and a placing groove 41 is formed in each supporting seat 4; third grooves 42 are formed in the side walls of the two sides of the placing groove 41, clamping blocks 43 are fixedly connected to the bottoms of the third grooves 42 through springs, and the clamping blocks 43 are pushed through pushing assemblies; when the rear axle package is placed on the placing platform 11, when the rear axle package covers the pair of arc-shaped plates 19, the bridge arm is positioned in the placing groove 41 and clamped by the pair of clamping blocks 43, the bridge arm is in a clamping state of the clamping blocks 43, and the shaft heads of the bridge arms at the two ends and the left and right processing units 12 are in an aligned state at the moment through the pushing assembly on the clamping blocks 43, so that the processing time is further saved without additionally adjusting the bridge arm.

The pushing assembly includes a trapezoidal block 48 and a power unit; the section of the clamping block 43 is trapezoidal, and the trapezoidal inclined plane of the clamping block 43 is close to the bottom of the third groove 42; a trapezoidal block 48 is connected to the bottom of the third groove 42 in a sliding manner, and the inclined surface of the trapezoidal block 48 and the inclined surface of the clamping block 43 are in parallel contact; the trapezoidal blocks 48 are moved by a power unit; when the processing device works, the inclined surfaces of the trapezoidal blocks 48 are in parallel contact with the inclined surfaces of the clamping blocks 43, the power unit pulls the trapezoidal blocks 48 to move downwards to push the clamping blocks 43 to move oppositely, the pair of clamping blocks 43 push the bridge arms, the horizontal center lines of the bridge arms are overlapped with the horizontal center line of the processing unit 12, and the processing precision of the shaft heads at the two ends of the rear axle is further improved.

The power unit includes a fourth groove 46; the side walls of the two sides of the placing groove 41 are both provided with fourth grooves 46, the bottoms of the fourth grooves 46 are connected with second sliders 47 in a sliding manner, and the second sliders 47 are fixedly connected to the side walls of the bottom ends of the fourth grooves 46 through springs; a fixed column 44 is fixedly connected between the opposite surfaces of the pair of second sliders 47, and the center of the fixed column 44 is rotatably connected with a roller 45; the fourth groove 46 is located below the third groove 42; the top end of the second sliding block 47 is fixedly connected with a connecting column, and the connecting column extends into the third groove 42 and is fixedly connected to the bottom end of the trapezoidal block 48; during operation, because of at rear axle package center with process when aiming at, the rear axle can appear removing on the standing groove 41 of supporting seat 4, in order to avoid the removal that the frictional force on placing the seat influences the rear axle, so be provided with gyro wheel 45 on standing groove 41, the rear axle rotates on gyro wheel 45 and can reduce frictional force, and can cushion through the spring on second slider 47 when the rear axle is placed on the gyro wheel 45 of standing groove 41, play the buffering guard action to the rear axle, and receive rear axle gravity at gyro wheel 45 and push down, can promote second slider 47 and remove, second slider 47 removes the relative movement who drives a pair of clamp splice 43, carry out the position alignment to the bridge arm and fix.

A second cavity 5 is formed in the clamping block 43; a fixed rod 53 is fixedly connected to the bottom of the third groove 42, the fixed rod 53 penetrates through the clamping block 43, and a pressing plate 51 is fixedly connected to the end part extending into the second cavity 5; a second air bag 52 is arranged between the pressure plate 51 and the side wall of the second cavity 5 close to the bottom of the third groove 42; a second air outlet cavity 54 is formed in the clamping block 43; a group of second air outlet holes 56 are formed in the side wall of the clamping block 43 away from the bottom of the third groove 42, and the second air outlet holes 56 are communicated with the second air outlet cavity 54; the second air bag 52 is communicated with the second air outlet cavity 54 through a hose; when the bridge arm clamping device works, when the clamping block 43 moves away from the bottom of the third groove 42, the pressing plate 51 extrudes the second air bag 52, the extruded gas of the second air bag 52 enters the second air outlet cavity 54 through the hose and is then sprayed out from the second air outlet hole 56, the sprayed gas can firstly remove impurities from the bridge arm clamping position, and the clamping effect of the clamping block 43 on the bridge arm is ensured.

Example two:

referring to fig. 8, in a first comparative example, as another embodiment of the present invention, opposite surfaces of a pair of the clamping blocks 43 are corrugated surfaces 55; the second air outlet hole 56 is formed at the groove of the corrugated surface 55; when the bridge arm cleaning device works, the opposite surfaces of the pair of clamping blocks 43 are arranged to be corrugated surfaces 55, the second air outlet holes 56 are formed in the grooves of the corrugated surfaces 55, the corrugated surfaces 55 of the clamping blocks 43 are close to the side walls of the bridge arm, sprayed air can be sprayed out to two sides along the corrugated grooves of the corrugated surfaces 55, and the sprayed air flow can increase the cleaning surface of the bridge arm.

The working principle is as follows: firstly, a rear axle arm needing to be processed with an axle head is placed on a placing groove 41 on a placing seat, meanwhile, an opening of a rear axle bag is covered and surrounded with a pair of arc-shaped plates 19, at the moment, the self gravity of the rear axle can press down a roller 45, the roller 45 presses down to drive a second sliding block 47 to press down, the second sliding block 47 pulls down a trapezoidal block 48 through a connecting column, the trapezoidal block 48 can push a clamping block 43 to move to preliminarily clamp the axle arm, then a motor 13 is started, the motor 13 drives a threaded rod 14 to rotate, because the threaded rod 14 is provided with a pair of opposite threads, a pair of first sliding blocks 16 can be driven to move in opposite directions when the threaded rod 14 rotates, the first sliding blocks 16 move through an L-shaped rod 18 to drive the arc-shaped plates 19 to move in opposite directions, the arc-shaped surfaces of the pair of arc-shaped plates 19 can be attached to the inner wall of the axle bag, then the motor 13 is continuously started, the arc-shaped plates 19 can continuously move, in the moving process of the arc-shaped plate 19, the arc-shaped surface of the arc-shaped plate 19 aligns and coincides the central point of the rear axle packet and the symmetrical points of the pair of arc-shaped plates 19, then the motor 13 is continuously started, at this time, the moving rod 191 moves towards the groove bottom of the first groove 22, when the moving rod 191 moves towards the groove bottom of the first groove 22, the first rotating shaft 25 is driven to rotate through the mutual engagement of the rack plate 23 and the first gear 24, the rotating shaft 25 of the first rotating shaft can tighten the pull rope 26, the pull rope 26 tightens and pulls back to drive the L-shaped plate 21 to move towards the groove bottom of the second groove 3, the L-shaped plate 21 clamps the opening surface of the rear axle packet, when the L-shaped plate 21 presses and clamps the rear axle packet downwards, the rear axle is further pressed downwards, the roller 45 is pressed downwards by the rear axle downwards, and the clamping force of the clamping block 43 on the bridge arm is increased at this time.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A rear axle processing machine tool is characterized by comprising a machine tool (1); a placing table (11) is fixedly connected in the machine tool (1), and processing units (12) are arranged on two sides of the placing table (11); a first cavity (15) is formed in the placing table (11), and a threaded rod (14) is rotatably connected to the inner wall of the first cavity (15); the side wall of the placing table (11) is fixedly connected with a motor (13), and the output end of the motor (13) is fixedly connected with a threaded rod (14); a pair of opposite threads which are symmetrically distributed is arranged on the threaded rod (14), and a pair of first sliding blocks (16) are connected to the threaded rod (14) in a threaded manner; a first through groove (17) is formed in the top end of the first cavity (15); an L-shaped rod (18) is fixedly connected to the first sliding block (16), the L-shaped rod (18) penetrates through the first through groove (17) and extends out of the placing table (11), and the L-shaped rod (18) is connected to the first through groove (17) in a sliding mode; the pair of L-shaped rods (18) is centrosymmetric relative to the placing table (11); the end part of the L-shaped rod (18) outside the placing table (11) is fixedly connected with an arc-shaped plate (19) through a moving rod (191).

2. The rear axle processing machine tool according to claim 1, characterized in that the end of the L-shaped rod (18) outside the placing table (11) is fixedly connected with a fixed block (2), and the top end of the fixed block (2) is provided with a second groove (3); support plates (27) are fixedly connected to the inner walls of the two sides of the second groove (3); one end of the L-shaped plate (21) is connected to the inner wall of the second groove (3) in a sliding mode, and the end, located at the second groove (3), of the L-shaped plate (21) is fixedly connected to the support plate (27) through a spring; a first groove (22) is formed in the end part, located outside the placing table (11), of the L-shaped rod (18); one end of the moving rod (191) penetrates through the fixed block (2) and the second groove (3) and is connected to the inner wall of the first groove (22) in a sliding mode, and the end portion of the moving rod (191) is fixedly connected to the bottom of the first groove (22) through a spring; the arc-shaped plate (19) is fixedly connected to the end part of the moving rod (191) far away from the first groove (22); the movable rod (191) drives the L-shaped plate (21) to move through the pulling assembly.

3. A rear axle processing machine as claimed in claim 2, characterized in that the pulling assembly comprises a rack plate (23); a rack plate (23) is fixedly connected to the side wall of the top end of the moving rod (191); the second groove (3) is rotatably connected with a first rotating shaft (25); a first gear (24) is fixedly connected to the first rotating shaft (25); the first gear (24) and the rack plate (23) are engaged with each other; a pull rope (26) is arranged on the first rotating shaft (25); one end of the pull rope (26) is fixedly connected to the first rotating shaft (25), and the other end of the pull rope is fixedly connected to the end portion, located on the second groove (3), of the L-shaped plate (21).

4. The rear axle processing machine tool according to claim 3, characterized in that a group of arc-shaped rubber pads (32) is fixedly connected to the side wall of the bottom end of the L-shaped plate (21).

5. The rear axle processing machine according to claim 4, characterized in that a first air outlet cavity (31) is opened in the L-shaped plate (21); a group of first air outlet holes (33) are formed in the side wall of the bottom end of the L-shaped plate (21), and the first air outlet holes (33) are communicated with the first air outlet cavity (31); the first air outlet holes (33) and the arc-shaped rubber pads (32) are arranged in a staggered manner; a first air bag (34) is arranged between the side wall of the bottom end of the L-shaped rod (18) and the top end of the fixed block (2); the first air bag (34) and the first air outlet cavity (31) are communicated with each other.

6. The rear axle processing machine tool according to claim 5, characterized in that a pair of supporting seats (4) symmetrical relative to the first through groove (17) is fixedly connected to the placing table (11), and a placing groove (41) is formed on each supporting seat (4); third grooves (42) are formed in the side walls of the two sides of the placing groove (41), clamping blocks (43) are fixedly connected to the bottoms of the third grooves (42) through springs, and the clamping blocks (43) are pushed through pushing assemblies.

7. A rear axle processing machine according to claim 6, characterized in that said pushing assembly comprises a trapezoidal block (48) and a power unit; the section of the clamping block (43) is trapezoidal, and the trapezoidal inclined plane of the clamping block (43) is close to the bottom of the third groove (42); the bottom of the third groove (42) is connected with a trapezoidal block (48) in a sliding manner, and the inclined plane of the trapezoidal block (48) is in parallel contact with the inclined plane of the clamping block (43); the trapezoidal blocks (48) are moved by a power unit.

8. A rear axle processing machine as claimed in claim 7, characterized in that the power unit comprises a fourth recess (46); the side walls of two sides of the placing groove (41) are respectively provided with a fourth groove (46), the bottom of the fourth groove (46) is connected with a second sliding block (47) in a sliding manner, and the second sliding block (47) is fixedly connected to the side wall of the bottom end of the fourth groove (46) through a spring; a fixed column (44) is fixedly connected between the opposite surfaces of the pair of second sliding blocks (47), and the center of the fixed column (44) is rotatably connected with a roller (45); the fourth groove (46) is located below the third groove (42); the top end of the second sliding block (47) is fixedly connected with a connecting column, and the connecting column extends into the third groove (42) and is fixedly connected to the bottom end of the trapezoidal block (48).

9. A rear axle processing machine according to claim 8, characterized in that a second cavity (5) is provided in the clamping block (43); a fixed rod (53) is fixedly connected to the bottom of the third groove (42), the fixed rod (53) penetrates through the clamping block (43), and a pressing plate (51) is fixedly connected to the end part extending into the second cavity (5); a second air bag (52) is arranged between the pressure plate (51) and the side wall of the second cavity (5) close to the bottom of the third groove (42); a second air outlet cavity (54) is formed in the clamping block (43); a group of second air outlet holes (56) are formed in the side wall, away from the bottom of the third groove (42), of the clamping block (43), and the second air outlet holes (56) are communicated with a second air outlet cavity (54); the second air bag (52) is communicated with the second air outlet cavity (54) through a hose.

10. A rear axle processing machine as claimed in claim 9, characterized in that the opposite faces of a pair of said clamping blocks (43) are corrugated faces (55); the second air outlet hole (56) is formed in the groove of the corrugated surface (55).