CN216715022U - Electric bicycle axle sleeve and cold-heading mould thereof and positioning tool for welding with chain wheel - Google Patents
Electric bicycle axle sleeve and cold-heading mould thereof and positioning tool for welding with chain wheel Download PDFInfo
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- CN216715022U CN216715022U CN202220432415.6U CN202220432415U CN216715022U CN 216715022 U CN216715022 U CN 216715022U CN 202220432415 U CN202220432415 U CN 202220432415U CN 216715022 U CN216715022 U CN 216715022U
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- electric bicycle
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Abstract
An electric bicycle shaft sleeve and a cold heading die thereof as well as a tool for welding and positioning the electric bicycle shaft sleeve and a chain wheel are characterized in that the electric bicycle shaft sleeve is of a hollow groove structure with an opening on the end surface of the inner side, a rotating shaft assembling hole is arranged on the bottom surface of the outer side of the hollow groove, the upper end surface and the lower end surface of the hollow groove are arc surfaces, two side walls are vertical planes, and rotating shaft positioning holes are arranged on the two side walls of the hollow groove; and the opening end face of the hollow groove of the shaft sleeve is welded and assembled with a toothed disc in a manual driving system of the electric bicycle. According to the utility model, through the optimized design of the hollow shaft sleeve structure, the cold heading die for the shaft sleeve and the welding positioning tool structure for the shaft sleeve and the chain wheel, the weight of the shaft sleeve is reduced, the welding positioning precision of the shaft sleeve and the chain wheel is ensured, and the aims of meeting the light weight requirement of a vehicle body and improving the assembling working efficiency of the shaft sleeve and the chain wheel are achieved.
Description
Technical Field
The utility model relates to an electric bicycle shaft sleeve, in particular to an electric bicycle shaft sleeve, a cold heading die of the electric bicycle shaft sleeve and a positioning tool for welding the electric bicycle shaft sleeve with a chain wheel.
Background
The shaft sleeve and the chain wheel are important parts of a manual driving system of the electric bicycle, and power applied to a pedal by a human body is transmitted to the driving wheel through the rotating shaft, the shaft sleeve, the chain wheel and the chain, so that a bicycle body moves forwards. Along with the continuous enhancement of people's energy-concerving and environment-protective consciousness, electric bicycle's lightweight problem is being paid close attention to, and traditional solid type cold-heading axle sleeve and with the shortcoming that chain wheel riveting assembly structure has heavy in weight, location structure complicacy, not only be contrary to the lightweight design theory of automobile body, also increased the assembly degree of difficulty of axle sleeve and chain wheel.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electric bicycle shaft sleeve and a tool for welding and positioning the shaft sleeve and a chain wheel, and aims to reduce the weight of the shaft sleeve, ensure the welding and positioning precision of the shaft sleeve and the chain wheel, and achieve the purposes of meeting the light weight requirement of a vehicle body and improving the assembling work efficiency of the shaft sleeve and the chain wheel through the optimized design of a hollow shaft sleeve structure, a cold heading forming die of the hollow shaft sleeve structure and the structure of the tool for welding and positioning the shaft sleeve and the chain wheel.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an electric bicycle axle sleeve is of a hollow groove structure with an opening on the end surface of the inner side, a rotating shaft assembling hole is arranged on the bottom surface of the outer side of the hollow groove, the upper end surface and the lower end surface of the hollow groove are arc surfaces, two side walls are vertical planes, and rotating shaft positioning holes are arranged on the two side walls; and the opening end face of the hollow groove of the shaft sleeve is welded and assembled with a toothed disc in a manual driving system of the electric bicycle.
Above-mentioned electric bicycle axle sleeve assembles through pivot pilot hole and electric bicycle manpower drive system well pivot to the axial positioning of axle sleeve is realized through the bolt assembly who joins in marriage dress in the pivot locating hole.
A cold heading die for an electric bicycle shaft sleeve comprises a die holder, a die plate, a lower die and an upper die; the die holder is fixedly arranged on a workbench of the punch press; the template is embedded in the die holder, and a lower die is assembled in the middle of the template; the lower die is provided with a die cavity matched with the shaft sleeve, and the bottom surface of the die cavity is provided with a rotating shaft assembling hole forming boss; the upper die is a punch arranged on the punching machine equipment, a male die used for forming the inner wall of the hollow groove of the shaft sleeve is arranged at the lower end of the punch, and a groove matched with a boss formed by a rotary shaft assembling hole on the bottom surface of the lower die cavity is formed in the bottom surface of the male die.
According to the electric bicycle shaft sleeve cold heading die, the axial die drawing inclined plane with the angle not less than 1 degree is arranged on the inner wall of the lower die cavity.
A welding and positioning tool for a shaft sleeve and a chain wheel of an electric bicycle comprises a workbench, a rotary table driving motor, a positioning pressure rod, a pressure rod driving cylinder, a positioning baffle and a baffle driving cylinder; the worktable is fixed on a horizontal plane, and a turntable driving motor is arranged below the table top of the worktable; the turntable driving motor is vertically arranged, and an output shaft of the turntable driving motor is fixedly assembled with the turntable; the turntable is positioned above the table top of the workbench; the positioning compression rod is fixed at the lower end of a telescopic arm of the compression rod driving cylinder, and the central axis of the positioning compression rod is superposed with the central axis of the turntable; the compression bar driving cylinder is arranged on the workbench through a cylinder support; the positioning baffle is fixed on the telescopic arm of the baffle driving cylinder and moves horizontally under the driving of the baffle driving cylinder.
Above-mentioned electric bicycle axle sleeve and chain wheel welding position frock be equipped with the chain wheel reference column that matches with the chain wheel locating hole on the electric bicycle chain wheel on the carousel.
Above-mentioned electric bicycle axle sleeve and chain wheel welding position frock, two sets ofly are no less than to chain wheel reference column quantity on the carousel.
Above-mentioned electric bicycle axle sleeve and chain wheel welding position frock, the locating baffle is equipped with V type location terminal surface, the arc surface structure phase-match of terminal surface about V type location terminal surface and the axle sleeve.
Above-mentioned electric bicycle axle sleeve and chain wheel welding position frock, location depression bar lower extreme is the circular cone location compact surface.
Above-mentioned electric bicycle axle sleeve and chain wheel welding position frock, carousel driving motor is gear motor.
The shaft sleeve of the electric bicycle provided by the utility model adopts a hollow groove structure with an opening on the inner side end surface, and is welded and assembled with a fluted disc in a manual driving system of the electric bicycle through the opening end surface of the hollow groove, so that the weight of the shaft sleeve is reduced, a riveting positioning structure is not required to be arranged on the shaft sleeve, and the process difficulty of cold heading forming of the shaft sleeve is reduced. In order to realize the welding assembly precision of the shaft sleeve and the chain wheel of the electric bicycle, the utility model also provides a welding positioning tool for the shaft sleeve and the chain wheel of the electric bicycle, wherein the welding positioning tool is provided with a turntable, a positioning pressure rod and a positioning baffle plate, when in welding operation, the positioning pressure rod and the positioning baffle rod can be matched to tightly press and position the chain wheel and a shaft sleeve workpiece, then the turntable drives the chain wheel and the shaft sleeve workpiece to rotate, and meanwhile, the welding gun arranged at a certain angle is used for welding operation on the periphery of the opening end surface of the shaft sleeve. Therefore, the utility model reduces the weight of the shaft sleeve, ensures the welding positioning precision of the shaft sleeve and the chain wheel, and achieves the aims of meeting the light weight requirement of a vehicle body and improving the assembling working efficiency of the shaft sleeve and the chain wheel.
Drawings
FIG. 1 is a schematic view of an assembled structure of a shaft sleeve and a chain wheel of an electric bicycle according to the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic view of a bushing structure of the electric bicycle according to the present invention;
FIG. 4 is a schematic cross-sectional view of the electric bicycle axle sleeve according to the present invention;
FIG. 5 is a schematic structural view of a cold heading die for a shaft sleeve of an electric bicycle according to the present invention;
FIG. 6 is a schematic view of the cross-sectional structure A-A of FIG. 5;
FIG. 7 is a schematic view of the electric bicycle shaft sleeve cold heading die in a matched mold state according to the utility model;
FIG. 8 is a schematic view of a welding and positioning tool for a shaft sleeve and a chain wheel of an electric bicycle according to the present invention;
FIG. 9 is a K-way view labeled in FIG. 8;
FIG. 10 is a schematic view of the sleeve and the chain wheel workpiece pressed and positioned;
FIG. 11 is an enlarged view of the structure at I in FIG. 10;
FIG. 12 is a K-way view labeled in FIG. 10;
FIG. 13 is a schematic view of the working state of the electric bicycle shaft sleeve and chain wheel welding positioning tool of the present invention;
fig. 14 is a K-direction view labeled in fig. 13.
The figures are numbered as follows:
1 is a shaft sleeve, 1-1 is a rotating shaft assembling hole, and 1-2 is a rotating shaft positioning hole; 2 is a chain wheel, 2-1 is a chain wheel positioning hole; 3 is a rotating shaft; 4 is a bolt assembly; 5 is a cold heading forming die for a chain wheel shaft sleeve, 5-1 is a die holder, 5-2 is a template, 5-3 is a lower die, 5-3-1 is a die cavity, 5-3-2 is a rotating shaft assembling hole forming boss, 5-4 is an upper die, 5-4-1 is a convex die, and 5-4-2 is a groove; 6, a shaft sleeve and a toothed disc welding positioning tool, 6-1, a rotary disc, 6-1-1, a toothed disc positioning column, 6-2, a rotary disc driving motor, 6-3, a workbench, 6-4, a baffle driving cylinder, 6-5, a positioning baffle, 6-6, a positioning pressure rod, 6-7, a cylinder support and 6-8, a pressure rod driving cylinder; and 6 is a welding gun.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments.
Referring to fig. 1, 2, 3 and 4, the utility model provides an electric bicycle axle sleeve, which is a hollow groove structure with an opening on the end surface of the inner side, wherein a rotating shaft assembling hole 1-1 is arranged on the bottom surface of the outer side of the hollow groove, the upper end surface and the lower end surface of the hollow groove are arc surfaces, two side walls are vertical planes, and rotating shaft positioning holes 1-2 are arranged on the two side walls; the end face of the hollow groove opening of the shaft sleeve 1 is welded and assembled with a chain wheel 2 in a manual driving system of the electric bicycle.
Referring to fig. 1 and 2, the shaft sleeve of the electric bicycle is assembled with a rotating shaft 3 in a manpower driving system of the electric bicycle through a rotating shaft assembling hole 1-1, and the axial positioning of the shaft sleeve is realized through a bolt assembly 4 assembled in a rotating shaft positioning hole 1-2.
Referring to fig. 5, 6 and 7, the utility model further provides an electric bicycle shaft sleeve cold-heading die 5, wherein the bicycle shaft sleeve cold-heading die 5 comprises a die holder 5-1, a die plate 5-2, a lower die 5-3 and an upper die 5-4; the die holder 5-1 is fixedly arranged on a workbench of the punch press; the template 5-2 is embedded in the die holder 5-1, and the lower die 5-3 is arranged in the middle of the template 5-2; the lower die 5-3 is provided with a die cavity 5-3-1 matched with the shaft sleeve 1, the inner wall of the die cavity 5-3-1 is provided with an axial die drawing inclined plane with the angle not less than 1 degree, and the bottom surface of the die cavity 5-3-1 is provided with a rotating shaft assembling hole forming boss 5-3-2; the upper die 5-4 is a punch head arranged on the punching machine equipment, a male die 5-4-1 used for forming the inner wall of the hollow groove of the shaft sleeve 1 is arranged at the lower end of the punch head, and a groove 5-4-2 matched with a boss 5-3-2 formed by a rotary shaft assembling hole on the bottom surface of a die cavity of the lower die 5-3 is arranged on the bottom surface of the male die 5-4-1.
Referring to fig. 8 and 9, the utility model further provides a shaft sleeve and chain wheel welding positioning tool for the electric bicycle, wherein the shaft sleeve and chain wheel welding positioning tool 6 comprises a workbench 6-3, a rotary table 6-1, a rotary table driving motor 6-2, a positioning pressure rod 6-6, a pressure rod driving cylinder 6-8, a positioning baffle 6-5 and a baffle driving cylinder 6-4; the worktable 6-3 is fixed on a horizontal plane, a turntable driving motor 6-2 is arranged below the table top of the worktable 6-3, the turntable driving motor 6-2 is a speed reducing motor, a vertical arrangement mode is adopted, and a vertical output shaft of the turntable driving motor penetrates through the table top of the worktable 6-3 and is fixedly assembled with the turntable 6-1 positioned above the table top of the worktable 6-3; the positioning compression rod 6-6 is fixed at the lower end of a telescopic arm of the compression rod driving cylinder 6-8, and the central axis of the positioning compression rod 6-6 is superposed with the central axis of the turntable 6-1; the compression bar driving cylinder 6-8 is arranged on the workbench 6-3 through a cylinder support 6-7 and is positioned behind the rotary table 6-1; the positioning baffle 6-5 is fixed on a telescopic arm of the baffle driving cylinder 6-4, and the positioning baffle 6-5 moves horizontally under the driving of the baffle driving cylinder 6-4; the baffle driving cylinder 6-4 is arranged on the workbench 6-3 and is positioned on the side of the turntable 6-1.
Referring to fig. 3, 4, 8 and 9, in the electric bicycle shaft sleeve and chain wheel welding positioning tool, a chain wheel positioning column 6-1-1 matched with a chain wheel positioning hole 2-1 on a chain wheel 2 of an electric bicycle is arranged on a rotary disc 6-1; the positioning baffle 6-5 is provided with a V-shaped positioning end surface which is matched with the arc surface structures of the upper end surface and the lower end surface of the shaft sleeve 1; the lower end of the positioning compression bar 6-6 is a conical positioning compression surface.
Referring to fig. 10, 11, 12, 13 and 14, the operation steps of the welding positioning tool for the shaft sleeve and the chain wheel of the electric bicycle according to the present invention when performing the welding operation of the shaft sleeve 1 and the chain wheel 2 are as follows:
1. the telescopic arm of the pressure lever driving cylinder 6-8 and the telescopic arm of the baffle driving cylinder 6-4 are both in a retraction state, at the moment, the chain wheel 2 is placed on the rotary table 6-1, and the chain wheel 2 is positioned by matching a chain wheel positioning hole 2-1 on the rotary table 6-1 with a chain wheel positioning hole 2-1 on the chain wheel 2;
2. the baffle plate drives a telescopic arm of the air cylinder 6-4 to extend out, then the shaft sleeve 1 is placed on the rotary table 6-1, and the position of the shaft sleeve 1 is positioned through a V-shaped positioning end face on the positioning baffle plate 6-5, so that the central axis of a rotating shaft assembling hole 1-1 on the shaft sleeve 1 is superposed with the central axis of the rotary table 6-1;
3. the compression bar drives the telescopic arm of the cylinder 6-8 to extend, the shaft sleeve 1 is compressed and fixed through the matching of the conical positioning compression surface at the lower end of the positioning compression bar 6-6 and the rotating shaft assembling hole 1-1 on the shaft sleeve 1, then the baffle drives the telescopic arm of the cylinder 6-4 to retract, and the V-shaped positioning end surface on the positioning baffle 6-5 is separated from the shaft sleeve 1;
4. and adjusting the position and the angle of the welding gun 6, starting the turntable driving motor 6-2 to drive the turntable 6-1, the chain wheel 2 and the shaft sleeve 1 to rotate, and simultaneously performing welding operation on the periphery of the opening end face of the shaft sleeve 1 through the welding gun 6.
Claims (10)
1. The utility model provides an electric bicycle axle sleeve which characterized in that: the shaft sleeve (1) is of a hollow groove structure with an opening on the end surface of the inner side, a rotating shaft assembling hole (1-1) is formed in the bottom surface of the outer side of the hollow groove, the upper end surface and the lower end surface of the hollow groove are arc surfaces, two side walls are vertical planes, and rotating shaft positioning holes (1-2) are formed in the two side walls of the hollow groove; the end face of the hollow groove opening of the shaft sleeve (1) is welded and assembled with a chain wheel (2) in a manual driving system of the electric bicycle.
2. The electric bicycle bushing of claim 1, wherein: the shaft sleeve (1) is assembled with a rotating shaft (3) in a manual driving system of the electric bicycle through a rotating shaft assembling hole (1-1), and axial positioning of the shaft sleeve is realized through a bolt assembly (4) assembled in a rotating shaft positioning hole (1-2).
3. The utility model provides an electric bicycle axle sleeve cold-heading mould which characterized in that: the shaft sleeve cold heading die (5) comprises a die holder (5-1), a template (5-2), a lower die (5-3) and an upper die (5-4); the die holder (5-1) is fixedly arranged on a workbench of the punch press; the template (5-2) is embedded in the die holder (5-1), and the lower die (5-3) is arranged in the middle of the template (5-2); the lower die (5-3) is provided with a die cavity (5-3-1) matched with the shaft sleeve (1), and the bottom surface of the die cavity (5-3-1) is provided with a rotating shaft assembling hole forming boss (5-3-2); the upper die (5-4) is a punch head arranged on the punching machine equipment, a male die (5-4-1) used for forming the inner wall of the hollow groove of the shaft sleeve is arranged at the lower end of the punch head, and a groove (5-4-2) matched with a boss (5-3-2) formed by a rotary shaft assembling hole on the bottom surface of the die cavity of the lower die (5-3) is arranged on the bottom surface of the male die (5-4-1).
4. The electric bicycle shaft sleeve cold heading die as claimed in claim 3, wherein: and an axial die drawing inclined plane with the angle not less than 1 degree is arranged on the inner wall of the die cavity of the lower die (5-3).
5. The utility model provides an electric bicycle axle sleeve and chain wheel welding position frock which characterized in that: the shaft sleeve and chain wheel welding positioning tool (6) comprises a workbench (6-3), a rotary table (6-1), a rotary table driving motor (6-2), a positioning pressure rod (6-6), a pressure rod driving cylinder (6-8), a positioning baffle (6-5) and a baffle driving cylinder (6-4); the workbench (6-3) is fixed on a horizontal plane, and a turntable driving motor (6-2) is arranged below the table top of the workbench (6-3); the turntable driving motor (6-2) is vertically arranged, and an output shaft of the turntable driving motor is fixedly assembled with the turntable (6-1); the turntable (6-1) is positioned above the table top of the workbench (6-3); the positioning compression rod (6-6) is fixed at the lower end of a telescopic arm of the compression rod driving cylinder (6-8), and the central axis of the positioning compression rod (6-6) is superposed with the central axis of the turntable (6-1); the compression bar driving cylinder (6-8) is arranged on the workbench (6-3) through a cylinder support (6-7); the positioning baffle (6-5) is fixed on the telescopic arm of the baffle driving cylinder (6-4), and the positioning baffle (6-5) moves horizontally under the driving of the baffle driving cylinder (6-4).
6. The electric bicycle shaft sleeve and chain wheel welding positioning tool according to claim 5, characterized in that: and a chain wheel positioning column (6-1-1) matched with a chain wheel positioning hole (2-1) on the chain wheel (2) of the electric bicycle is arranged on the rotary disc (6-1).
7. The electric bicycle shaft sleeve and chain wheel welding positioning tool according to claim 6, characterized in that: the number of the chain wheel positioning columns (6-1-1) on the rotary table (6-1) is not less than two.
8. The electric bicycle shaft sleeve and chain wheel welding positioning tool according to claim 7, characterized in that: the positioning baffle (6-5) is provided with a V-shaped positioning end face which is matched with the arc surface structures of the upper end face and the lower end face of the shaft sleeve (1).
9. The electric bicycle axle sleeve and chain wheel welding position frock of claim 8, characterized in that: the lower end of the positioning compression bar (6-6) is a conical positioning compression surface.
10. The electric bicycle shaft sleeve and chain wheel welding positioning tool according to any one of claims 5 to 9, characterized in that: the turntable driving motor (6-2) is a speed reducing motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220432415.6U CN216715022U (en) | 2022-03-01 | 2022-03-01 | Electric bicycle axle sleeve and cold-heading mould thereof and positioning tool for welding with chain wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220432415.6U CN216715022U (en) | 2022-03-01 | 2022-03-01 | Electric bicycle axle sleeve and cold-heading mould thereof and positioning tool for welding with chain wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216715022U true CN216715022U (en) | 2022-06-10 |
Family
ID=81874717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220432415.6U Active CN216715022U (en) | 2022-03-01 | 2022-03-01 | Electric bicycle axle sleeve and cold-heading mould thereof and positioning tool for welding with chain wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216715022U (en) |
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2022
- 2022-03-01 CN CN202220432415.6U patent/CN216715022U/en active Active
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