Punching tool for machining end cover of reduction gearbox of electric vehicle

Abstract

The utility model relates to the technical field of electric automobile reduction gearbox production, in particular to a punching tool for machining an end cover of an electric automobile reduction gearbox, which is reasonable in structural design and comprises a positioning component for bearing the end cover of the reduction gearbox and a punching component arranged above the positioning component. The positioning assembly comprises a bottom plate, a servo motor, a rotary table, a pressure bearing frame and a punching block transfer belt, the rotary table of the positioning assembly is used for bearing the reduction gearbox end covers in batches, the pressure bearing frame is used for improving the pressure bearing capacity of the rotary table in the punching process, and the punching block transfer belt is used for transferring punching blocks generated by punching in time; the punching assembly comprises a linear guide rail pair, a vertical hydraulic push rod, a flange end plate, a vertical shaft, a punch and a punching inner wall polishing mechanism, and the punching assembly is used for conducting punching operation on the to-be-punched position of the inner ring and then conducting punching operation on the outer punching position of the outer ring; and the inner wall of the shaft outlet hole can be polished through the punched hole inner wall polishing mechanism after each time of punching is finished.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric automobile reduction gearbox production technical field especially relates to a kind of punching tool for electric automobile reduction gearbox end cover processing. BACKGROUND

[0002] Electric automobile reduction gearbox plays a vital role in the power transmission system of electric automobile. The following is the main role of electric automobile reduction gearbox: 1) The driving motor of electric automobile usually has higher speed, while the wheel needs to rotate at a lower speed to maintain stable driving state. Reduction gearbox can reduce the high-speed rotation of motor to low-speed rotation suitable for driving wheel, realize the speed matching between motor and wheel. By increasing the number and number of gear pairs, reduction gearbox can significantly increase output torque. This makes electric automobile better cope with the working conditions such as uphill and acceleration that require large torque. 2) The existence of reduction gearbox makes electric automobile better adapt to different road conditions. When turning, downhill or uphill, reduction gearbox can adjust the speed to ensure that the vehicle has enough power to cope with various road conditions. Reduction gearbox can also absorb and disperse part of the impact load, reduce the wear of driving motor, and prolong its service life. 3) Since reduction gearbox reduces the speed of motor, it reduces the loss of energy in transmission process and improves the energy utilization efficiency of the whole system.

[0003] The existing punching tool for electric automobile reduction gearbox end cover processing is found to have deficiencies in use. First, it cannot realize continuous batch processing of the shaft hole of electric automobile reduction gearbox end cover. Second, it cannot polish the inner wall of the shaft hole after punching is completed, and additional process is required. Therefore, it is necessary to optimize and improve the existing punching tool for electric automobile reduction gearbox end cover processing. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the above problems existing in traditional technology, and provides a kind of punching tool for electric automobile reduction gearbox end cover processing.

[0005] To achieve the above technical purpose and effect, the utility model is realized by the following technical scheme:

[0006] A kind of punching tool for electric automobile reduction gearbox end cover processing, including the positioning component for bearing reduction gearbox end cover and the punching component arranged above it;

[0007] The reduction gearbox end cover includes an end cover body, the outer periphery of the end cover body is provided with a flange, the flange is uniformly provided with a bolt seat, the center of the end cover body is provided with a positioning shaft sleeve, and the positions of the end cover body on both sides of the positioning shaft sleeve are respectively taken as the punching positions of the first shaft hole and the second shaft hole;

[0008] The positioning assembly comprises a base plate, a servo motor, a rotating disc, a pressure bearing frame and a punch block transfer belt, the servo motor and the pressure bearing frame are mounted on the base plate, the output end of the servo motor is provided with the rotating disc, the rotating disc is provided with a plurality of end cover positioning grooves along the circumference, two first punch avoiding holes are formed at the bottom end of each end cover positioning groove, two second punch avoiding holes are formed on the top plate of the pressure bearing frame, and the inside of the pressure bearing frame is provided with the punch block transfer belt;

[0009] The punching assembly comprises a linear guide pair, a vertical hydraulic push rod, a flange end plate, a vertical shaft, a punch and a punch inner wall polishing mechanism, the slider of the linear guide pair is fixed with the vertical hydraulic push rod at the lower side, the movable end of the vertical hydraulic push rod is fixed with the vertical shaft at the top end through the flange end plate, the bottom end of the vertical shaft is provided with the punch, and the outside of the vertical shaft is provided with the punch inner wall polishing mechanism which is fixed with the flange end plate.

[0010] Further, in the punching tool for machining the end cover of the reduction gearbox of the electric vehicle, the shape of the end cover positioning groove is matched with the shape of the end cover of the reduction gearbox.

[0011] Further, in the punching tool for machining the end cover of the reduction gearbox of the electric vehicle, the pressure bearing frame is in the form of a groove plate structure, and the top plate upper side is in sliding abutment with the lower side of the rotating disc.

[0012] Further, in the punching tool for machining the end cover of the reduction gearbox of the electric vehicle, when the end cover positioning groove rotates to the punching station with the rotating disc, the two first punch avoiding holes in the end cover positioning groove are in corresponding communication with the two second punch avoiding holes, and the specifications of the first punch avoiding hole, the second punch avoiding hole and the corresponding shaft hole are matched.

[0013] Further, in the punching tool for machining the end cover of the reduction gearbox of the electric vehicle, the punch block transfer belt is a horizontal circulating conveyor belt, and the feeding part of the punching transfer belt is located directly below the two punch avoiding holes.

[0014] Further, in the punching tool for machining the end cover of the reduction gearbox of the electric vehicle, the punch comprises a punch body, an internal thread hole is formed at the upper end of the punch body, an external thread part is arranged at the bottom end of the vertical shaft, a recess is arranged at the lower part of the punch body, a ring cutter is arranged at the bottom end of the recess, and a pressure relief hole is arranged at the top part of the side wall of the recess.

[0015] Further, the punching tool for machining the end cover of the reduction gearbox of the electric vehicle, the inner wall polishing mechanism comprises a rotary drive, a rotating sleeve, a piston rod, a polishing block and a distance adjusting push rod, the output end of the rotary drive is provided with the rotating sleeve, the rotating sleeve is internally provided with an annular oil cavity, a plurality of groups of branch oil cavities distributed on the outer periphery of the annular oil cavity and a pressure regulating oil cavity in communication with the top end of the annular oil cavity, the piston rod is movably arranged in the branch oil cavity, the outer ends of the two piston rods in the same group are fixedly connected with the polishing block, and the distance adjusting push rod is arranged on the cover of the rotary drive.

[0016] Further, the punching tool for machining the end cover of the reduction gearbox of the electric vehicle, the rotating sleeve is arranged on the outer side of the vertical shaft, and the outer side of the polishing block is provided with an arc-shaped ceramic polishing layer.

[0017] The utility model discloses the beneficial effect is:

[0018] The utility model discloses the beneficial effect is:

[0019] Of course, implementing any product of the utility model does not necessarily need to achieve all the advantages above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0021] Figure 1 It is the whole structure schematic diagram of the utility model;

[0022] Figure 2 It is the machining flow chart of the end cover of the reduction gearbox in the utility model;

[0023] Figure 3 It is the structure schematic diagram of the positioning assembly in the utility model;

[0024] Figure 4It is the structure schematic view of the turntable in the utility model;

[0025] Figure 5 It is the structure schematic view of the punching assembly in the utility model;

[0026] Figure 6 It is the structure schematic view of the punching assembly in the utility model after omitting the punching inner wall polishing mechanism;

[0027] Figure 7 It is the structure schematic view of the punch in the utility model;

[0028] Figure 8 It is the structure schematic view of the punching inner wall polishing mechanism in the utility model;

[0029] In the drawing, the components represented by each mark are explained as follows:

[0030] 1-positioning assembly, 11-bottom plate, 12-servo motor, 13-turntable, 14-end cover positioning groove, 15-first stamping avoidance hole, 16-pressure bearing frame, 17-second stamping avoidance hole, 18-punch block transfer belt, 2-punching assembly, 21-linear guide pair, 22-vertical hydraulic push rod, 23-flange end plate, 24-vertical shaft, 25-punch, 251-punch body, 252-internal thread hole, 253-recess, 254-ring cutting blade, 255-pressure relief hole, 26-punching inner wall polishing mechanism, 261-rotary drive, 262-sleeve, 263-annular oil cavity, 264-branch oil cavity, 265-piston rod, 266-polishing block, 267-pressure regulating oil cavity, 268-distance adjusting push rod, 3-reduction box end cover, 31-end cover body, 32-convex edge, 33-bolt seat, 34-positioning shaft sleeve, 35-first shaft hole, 36-second shaft hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] As shown in Figures 1-8 The embodiment provides a punching tool for machining reduction box end cover of electric automobile, which comprises positioning assembly 1 for bearing reduction box end cover 3 and punching assembly 2 arranged above it.

[0033] In the embodiment, the end cover 3 of the reduction gearbox comprises an end cover body 31, the outer periphery of the end cover body 31 is provided with a flange 32, the flange 32 is uniformly provided with bolt seats 33, the center of the end cover body 31 is provided with a positioning shaft sleeve 34, and the positions of the end cover body 31 on both sides of the positioning shaft sleeve 34 are respectively punched as the first shaft hole 35 and the second shaft hole 36.

[0034] In the embodiment, the positioning assembly 1 comprises a bottom plate 11, a servo motor 12, a rotating disc 13, a pressure bearing frame 16 and a punch transfer belt 18. The servo motor 12 and the pressure bearing frame 16 are installed on the bottom plate 11, the output end of the servo motor 12 is installed with the rotating disc 13, the rotating disc 13 is provided with a plurality of end cover positioning grooves 14 along the circumference, the bottom end of each end cover positioning groove 14 is provided with two first punch avoiding holes 15, the top plate of the pressure bearing frame 16 is provided with two second punch avoiding holes 17, and the inside of the pressure bearing frame 16 is installed with the punch transfer belt 18.

[0035] In the embodiment, the punching assembly 2 comprises a linear guide pair 21, a vertical hydraulic push rod 22, a flange end plate 23, a vertical shaft 24, a punch 25 and a punching inner wall polishing mechanism 26. The vertical hydraulic push rod 22 is fixed to the lower side of the sliding block of the linear guide pair 21, the movable end of the vertical hydraulic push rod 22 is fixed to the top end of the vertical shaft 24 through the flange end plate 23, the bottom end of the vertical shaft 24 is installed with the punch 25, and the outer side of the vertical shaft 24 is installed with the punching inner wall polishing mechanism 26 which is fixed to the flange end plate 23.

[0036] In the embodiment, the shape of the end cover positioning groove 14 is matched with the shape of the end cover 3 of the reduction gearbox.

[0037] In the embodiment, the pressure bearing frame 16 is in the form of a groove plate structure, and the top plate upper side surface thereof is in sliding abutment with the lower side surface of the rotating disc 13.

[0038] In the embodiment, when the end cover positioning groove 14 rotates to the punching station along with the rotating disc 13, the two first punch avoiding holes 15 in the end cover positioning groove 14 are in corresponding communication with the two second punch avoiding holes 17, and the specifications of the first punch avoiding holes 15, the second punch avoiding holes 17 and the corresponding shaft holes are matched.

[0039] In the embodiment, the punch transfer belt 18 is a horizontal circulating conveyor belt, and the feeding part of the punch transfer belt 18 is located directly below the two punch avoiding holes.

[0040] In the embodiment, the punch 25 comprises a punch body 251, an inner threaded hole 252 is formed in the upper end of the punch body 251, and an outer threaded part is arranged at the bottom end of the vertical shaft 24; a recess 253 is arranged at the lower part of the punch body 251, a ring cutting blade 254 is arranged at the bottom end of the recess 253, and a pressure relief hole 255 is arranged at the top side wall of the recess 253.

[0041] In the embodiment, the inner-wall polishing mechanism 26 of the punching hole comprises a rotary drive 261, a rotating sleeve 262, a piston rod 265, a polishing block 266 and a distance adjusting push rod 268. The output end of the rotary drive 261 is provided with the rotating sleeve 262. The rotating sleeve 262 is internally provided with an annular oil cavity 263, a plurality of groups of branch oil cavities 264 distributed on the outer periphery of the annular oil cavity 263 and a pressure regulating oil cavity 267 in communication with the top end of the annular oil cavity 263. The piston rod 265 is movably arranged in the branch oil cavity 264. The outer ends of the piston rods 265 in the same group are fixedly provided with the polishing block 266. The distance adjusting push rod 268 is arranged on the cover of the rotary drive 261. The movable rod of the distance adjusting push rod 268 is slidingly arranged in the pressure regulating oil cavity 267. The displacement of the movable rod of the distance adjusting push rod 268 is controlled to adjust the rotating polishing diameter of the polishing block 266.

[0042] In the embodiment, the rotary drive 261 is a full-circle rotary speed reduction transmission mechanism integrated with a driving power source. The rotary bearing is used as a transmission driven part and a mechanism attachment part. The driving source and the cover are attached to one of the inner and outer rings of the rotary bearing. The other ring is used as a transmission driven part and a connecting base of the driven working part. The characteristics of the rotary bearing itself are used as a full-circle rotary connecting part. The driving power source and the main transmission parts are efficiently arranged. The rotary drive 261 is a universal speed reduction transmission mechanism which integrates the functions of rotation, speed reduction and driving while having a simple structure and being convenient to manufacture and maintain.

[0043] In the embodiment, the rotating sleeve 262 is arranged outside the vertical shaft 24. The outer side of the polishing block 266 is provided with an arc-shaped ceramic polishing layer.

[0044] One specific application of the embodiment is that the tool mainly comprises a positioning assembly 1 and a punching assembly 2. On the one hand, the rotating disc 13 of the positioning assembly 1 is used to batch carry the end cover 3 of the reduction box. The pressure bearing frame 16 is used to improve the pressure bearing capacity of the rotating disc 13 during the punching process. The punching block transfer belt 18 is used to timely transfer the punching blocks generated in the punching process. On the other hand, the punching assembly 2 is used to first punch the punching position at the inner circle and then punch the outer punching position at the outer circle. After each punching is completed, the inner-wall polishing mechanism 26 of the punching hole is used to polish the inner wall of the shaft hole without additional process treatment. The specific working process of the punching assembly 2 is as follows: when the end cover 3 of the reduction box rotates to the punching station with the rotating disc 13, the vertical hydraulic push rod 22 is started to drive the vertical shaft 24 and the punch 25 to move downward to realize the punching operation. Then, the vertical hydraulic push rod 22 continues to drive the vertical shaft 24 to move downward by a distance. The distance adjusting push rod 268 of the inner-wall polishing mechanism 26 of the punching hole is actuated to make the polishing block 266 outwardly displace to abut against the inner wall of the shaft hole. Then, the rotary drive 261 drives the rotating sleeve 262, the piston rod 265 and the polishing block 266 thereon to rotate to realize the polishing treatment of the inner wall of the shaft hole.

[0045] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A punching tool for machining an end cover of an electric vehicle reduction gearbox, characterized in that, The positioning assembly for bearing the end cover of the reduction gearbox and the punching assembly arranged above the positioning assembly; The end cover of the reduction gearbox comprises an end cover body, the outer periphery of the end cover body is provided with a raised edge, the raised edge is uniformly provided with bolt seats, the center of the end cover body is provided with a positioning shaft sleeve, and the positions of the end cover body on both sides of the positioning shaft sleeve are respectively used as punching positions of first and second shaft holes; The positioning assembly comprises a bottom plate, a servo motor, a rotating disc, a pressure bearing frame and a punch transfer belt, the servo motor and the pressure bearing frame are mounted on the bottom plate, the output end of the servo motor is provided with the rotating disc, the rotating disc is provided with a plurality of end cover positioning grooves in the circumferential direction, the bottom end of each end cover positioning groove is provided with two first punch avoiding holes, the top plate of the pressure bearing frame is provided with two second punch avoiding holes, and the inside of the pressure bearing frame is provided with the punch transfer belt; The punching assembly comprises a linear guide pair, a vertical hydraulic push rod, a flange end plate, a vertical shaft, a punch and a punching inner wall polishing mechanism, the sliding block of the linear guide pair is fixed with the vertical hydraulic push rod at the lower side, the movable end of the vertical hydraulic push rod is fixed with the vertical shaft at the top end through the flange end plate, the bottom end of the vertical shaft is provided with the punch, and the outer side of the vertical shaft is provided with the punching inner wall polishing mechanism which is fixed with the flange end plate.

2. The punching tool for machining the end cover of the reduction gearbox of the electric vehicle according to claim 1, characterized in that, The shape of the end cover positioning groove is matched with the shape of the end cover of the reduction gearbox.

3. The punching tool for machining the end cover of the reduction gearbox of the electric vehicle according to claim 2, characterized in that, The pressure bearing frame is in the form of a groove plate structure, and the top plate upper side surface is in sliding abutment with the lower side surface of the rotating disc.

4. The punching tool for machining the end cover of the reduction gearbox of the electric vehicle according to claim 3, characterized in that, When the end cover positioning groove rotates to the punching station with the rotating disc, the two first punch avoiding holes in the end cover positioning groove are in corresponding communication with the two second punch avoiding holes, and the specifications of the first punch avoiding holes, the second punch avoiding holes and the corresponding shaft holes are matched.

5. The punching tool for machining the end cover of the reduction gearbox of the electric vehicle according to claim 4, characterized in that, The punch transfer belt is a horizontal circulating conveyor belt, and the feeding part of the punch transfer belt is located directly below the two punch avoiding holes.

6. The punching tool for machining the end cover of the reduction gearbox of the electric vehicle according to claim 5, characterized in that, The punch comprises a punch body, an internal thread hole is formed in the upper end of the punch body, an external thread part is arranged at the bottom end of the vertical shaft, a recess is arranged at the lower part of the punch body, a ring cutting blade is arranged at the bottom end of the recess, and a pressure relief hole is arranged at the top side wall of the recess.

7. The punching tool for machining the end cover of the reduction gearbox of the electric vehicle according to claim 6, characterized in that, The punching inner wall polishing mechanism comprises a rotary drive, a rotating sleeve, a piston rod, a polishing block and a distance adjusting push rod, the output end of the rotary drive is provided with the rotating sleeve, the inside of the rotating sleeve is provided with an annular oil cavity, a plurality of groups of branch oil cavities distributed on the outer periphery of the annular oil cavity and a pressure regulating oil cavity in communication with the top end of the annular oil cavity, the piston rod is movably arranged in the branch oil cavities, the outer ends of the two piston rods in the same group are fixed with the polishing block, the distance adjusting push rod is mounted on the cover of the rotary drive, the movable rod of the distance adjusting push rod is slidingly limited in the pressure regulating oil cavity, and the adjustment of the rotating polishing diameter of the polishing block is realized by controlling the displacement of the movable rod in the distance adjusting push rod.

8. The punching tool for machining the end cover of the reduction gearbox of the electric vehicle according to claim 7, characterized in that, The rotating sleeve is arranged on the outer side of the vertical shaft, and the outer side of the polishing block is provided with an arc-shaped ceramic polishing layer.

Images