CN115156862B - Process for improving coaxiality of motor hollow shaft - Google Patents
Process for improving coaxiality of motor hollow shaft Download PDFInfo
- Publication number
- CN115156862B CN115156862B CN202210796918.6A CN202210796918A CN115156862B CN 115156862 B CN115156862 B CN 115156862B CN 202210796918 A CN202210796918 A CN 202210796918A CN 115156862 B CN115156862 B CN 115156862B
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- turning
- hollow shaft
- hole
- chuck
- spline
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000007514 turning Methods 0.000 claims description 40
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000005121 nitriding Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
Abstract
A process for improving coaxiality of a motor hollow shaft comprises tooling improvement and process improvement, wherein a cushion sleeve is added at a spline end on a hollow shaft tire mandrel, and a check ring is used for limiting a groove on the mandrel to achieve a positioning effect; and step two, the process is improved, the size of the idle cutter and the conical surface are machined while the small diameter of the internal spline is machined, the size of the idle cutter is required to be in small clearance fit with the cushion sleeve, the positioning effect is achieved, and the conical surface and the conical sleeve are matched on the same datum. The process method of the invention well improves the coaxiality of the motor hollow shaft, reduces the failure rate of the motor and prolongs the service life of the motor.
Description
Technical Field
The invention relates to the technical field of motor manufacturing, in particular to a process for improving coaxiality of a motor hollow shaft.
Background
The motor shaft is a transmission piece, and has high coaxiality requirement, if the coaxiality is not high, abnormal sound, noise, heating and other problems can be caused, so the coaxiality requirement of the motor shaft is important. The motor hollow shaft is generally an involute internal spline shaft, and the phenomenon that a torque shaft cannot be installed, tooth surfaces are broken after the coaxiality of the inner circle and the outer circle exceeds 0.5mm can be caused.
Disclosure of Invention
In view of this, it is necessary to provide a process for improving the coaxiality of the hollow shaft of the motor.
A process for improving coaxiality of a motor hollow shaft comprises the following steps:
the tooling design is that a cushion sleeve is added at the spline end of a hollow shaft tyre mandrel to achieve the supporting and positioning effects and make up for the gap existing between spline matching; the check ring is used for limiting the grooving on the mandrel and is used for fixing the position of the cushion sleeve, the grooving can be carried out on other products when the positions of the other products are different when the spline parameters are the same, one mandrel can be used for a plurality of products, and tooling casting is reduced;
and (3) processing the small diameter of the internal spline and simultaneously processing the size of a blank cutter, the conical surfaces with the two ends of 5 multiplied by 75 degrees and the positioning size of the positioning tire of the broaching machine.
Preferably, the size of the idle knife is required to be in small clearance fit with the cushion sleeve, so that the positioning effect is achieved; the conical surfaces with the two ends of 5 multiplied by 75 degrees are on the same axis, so that the positioning references of the subsequent process are coaxial, and alignment deviation is not generated.
Preferably, the hollow shaft processing technology specifically comprises the following steps: selecting bar stock, roughly turning the outer contour, finely turning the outer contour, grooving, turning the end surface, roughly boring the inner hole and finely boring the inner hole.
Preferably, the hollow shaft comprises the following specific processing technology: and adding the flat two end surfaces of the bar stock according to the total length, and punching a center hole.
Preferably, the specific steps of rough turning of the outer contour are as follows: rough turning is carried out, wherein the average amount of each outer circular surface at the left end is 10mm, the average amount of each end surface is 2mm, and the taper of 10mm of the turning length of the end part of the shaft is 30 DEG; rough turning the outer circular surfaces of the right end with the average allowance of 10mm, leveling the end surfaces with the average allowance of 2mm, and turning the end part of the shaft with the taper of 10mm to obtain a 30-degree taper; the deep hole drill drills the spline small diameter and the blank hole with the equal allowance of 10mm; and turning 5 multiplied by 75 DEG conical surfaces at the two end parts of the shaft hole.
Preferably, the specific steps of finish turning the outer contour, grooving, turning the end face, rough boring the inner hole and finish boring the inner hole are as follows: quenching and tempering; one end of the chuck is clamped, the other end of the umbrella-shaped center top is positioned at the other end of the umbrella-shaped center top, the average amount of each round surface outside the right end of the semi-finish turning is 6mm, the average amount of each flat end surface is 1.5mm, and the taper of 10mm of the turning length of the end part of the shaft is 30 DEG; one end of the chuck is clamped, the other end of the umbrella-shaped center top is provided with 6mm of uniform allowance of each outer circular surface at the left end of the semi-finish turning, and the uniform allowance of each end surface is 1.5; one end of the chuck is clamped, the other end of the center frame is provided with a deep hole drill, and a left end spline blank hole is drilled to the small-diameter end face of the spline; one end of the chuck is clamped, the other end of the center frame is finely turned into the small diameter of the spline at the right end and the sizes of all holes, the positioning size of the excircle is finely turned into the matched size of the positioning tire of the broaching machine, the conical surface with the angle of 5 multiplied by 75 degrees and the holes at the left end are turned into the two ends of the shaft hole, and the two end faces are flat; positioning a tire pull spline; one end of the chuck is clamped, the other end of the center frame is finely turned, the allowance of each outer circular surface of the right end is 0.8mm, each end face is flattened, and a groove and a chamfer are cut; one end of the chuck is clamped, the other end of the center frame is finely turned, the allowance of each outer circular surface of the left end is 0.8mm, each end face is flattened, and a groove and a chamfer are cut; nitriding the tooth surface; the upper mandrel is knocked tightly and is connected with the taper sleeve and the sleeve in series, the nut is screwed down, and the two ends are positioned by the central hole and ground into the outer circular surfaces of the left end; grinding the mandrel into outer circular surfaces at the right end; one end of the chuck is clamped, the other end of the center frame is aligned according to the outer circular surface, and a conical surface of 5 multiplied by 75 degrees is finely turned at the end part of the left end shaft hole; one end of the chuck is clamped, the other end of the center frame is aligned according to the outer circular surface, and a conical surface of 5 multiplied by 75 degrees is finely turned at the end part of the right end shaft hole; milling into key grooves.
The process method of the invention well improves the coaxiality of the motor hollow shaft, reduces the failure rate of the motor and prolongs the service life of the motor.
Drawings
FIG. 1 is a schematic diagram of a tooling improvement;
in the figure: nut 1, distance cover 2, bolt 3, support cover 4, hollow shaft 5, pad cover 6, retaining ring 7.
Detailed Description
In order to make the technical scheme of the invention easier to understand, the technical scheme of the invention is clearly and completely described by adopting a mode of a specific embodiment with reference to the accompanying drawings.
The process for improving the coaxiality of the motor hollow shaft comprises the following steps of:
step one, in the tooling design, referring to fig. 1, a cushion sleeve 6 is added at the spline end of a tire mandrel of a hollow shaft 5 to achieve the supporting and positioning effects and make up for the gap existing between spline matching; the retaining ring 7 for cutting the groove is limited on the hollow shaft 5 and is used for fixing the position of the cushion sleeve 6, the groove can be cut again when other product positions are different when spline parameters are the same, one hollow shaft can be used for a plurality of products, and tool casting is reduced; the nut 1 is matched with the shaft extension end of the hollow shaft 5, the supporting sleeve 4 is fixedly matched on the hollow shaft 5 through the bolt 3, the distance sleeve 2 is matched on the hollow shaft 5, and the distance sleeve is positioned between the nut 1 and the supporting sleeve 4.
Step two, the process design is carried out, and the small diameter of the internal spline is processed, and simultaneously, the size of a blank cutter, the conical surfaces with the two ends of 5 multiplied by 75 degrees and the positioning size of a positioning tire of a broaching machine are processed. The size of the idle knife is required to be in small clearance fit with the cushion sleeve, so that the positioning effect is achieved; the conical surfaces with the two ends of 5 multiplied by 75 degrees are on the same axis, so that the positioning references of the subsequent process are coaxial, and alignment deviation is not generated.
The hollow shaft processing technology specifically comprises the following steps: selecting bar stock, roughly turning the outer contour, finely turning the outer contour, grooving, turning the left end face, roughly turning the outer contour of the end face, roughly boring the inner hole and finely boring the inner hole.
The hollow shaft comprises the following specific processing technology: and adding 4mm of flat two end surfaces of the bar stock according to the total length, namely, the total length allowance is 4mm, and each of the two end surfaces is 2mm. And punching a center hole; rough turning is carried out, wherein the average amount of each outer circular surface at the left end is 10mm, the average amount of each end surface is 2mm, and the taper of 10mm of the turning length of the end part of the shaft is 30 DEG; rough turning the outer circular surfaces of the right end with the average allowance of 10mm, leveling the end surfaces with the average allowance of 2mm, and turning the end part of the shaft with the taper of 10mm to obtain a 30-degree taper; the deep hole drill drills the spline small diameter and the blank hole with the equal allowance of 10mm; turning 5X 75 DEG conical surfaces at two end parts of the shaft hole; quenching and tempering; one end of the chuck is clamped, the other end of the umbrella-shaped center top is positioned at the other end of the umbrella-shaped center top, the average amount of each round surface outside the right end of the semi-finish turning is 6mm, the average amount of each flat end surface is 1.5mm, and the taper of 10mm of the turning length of the end part of the shaft is 30 DEG; one end of the chuck is clamped, the other end of the umbrella-shaped center top is provided with 6mm of uniform allowance of each outer circular surface at the left end of the semi-finish turning, and the uniform allowance of each end surface is 1.5; one end of the chuck is clamped, the other end of the center frame is provided with a deep hole drill, and a left end spline blank hole is drilled to the small-diameter end face of the spline; one end of the chuck is clamped, the other end of the center frame is finely turned into the small diameter of the spline at the right end and the sizes of all holes, the positioning size of the excircle is finely turned into the matched size of the positioning tire of the broaching machine, the conical surface with the angle of 5 multiplied by 75 degrees and the holes at the left end are turned into the two ends of the shaft hole, and the two end faces are flat; positioning a tire pull spline; one end of the chuck is clamped, the other end of the center frame is finely turned, the allowance of each outer circular surface of the right end is 0.8mm, each end face is flattened, and a groove and a chamfer are cut; one end of the chuck is clamped, the other end of the center frame is finely turned, the allowance of each outer circular surface of the left end is 0.8mm, each end face is flattened, and a groove and a chamfer are cut; nitriding the tooth surface; the upper mandrel is knocked tightly and is connected with the taper sleeve and the sleeve in series, the nut is screwed down, and the two ends are positioned by the central hole and ground into the outer circular surfaces of the left end; grinding the mandrel into outer circular surfaces at the right end; one end of the chuck is clamped, the other end of the center frame is aligned according to the outer circular surface, and a conical surface of 5 multiplied by 75 degrees is finely turned at the end part of the left end shaft hole; one end of the chuck is clamped, the other end of the center frame is aligned according to the outer circular surface, and a conical surface of 5 multiplied by 75 degrees is finely turned at the end part of the right end shaft hole; milling into key grooves.
Through the process method, the method is applied to the machining of the motor hollow shaft, and is used for tracking, and the coaxiality of the small diameter and the outer circular surface of the hollow shaft detection spline of products such as YBC-300C, YBC-300G, YBC-300A, YBC-6200G is controlled within the range of 0.3 mm.
It should be noted that the embodiments described herein are only some embodiments of the present invention, not all the implementation manners of the present invention, and the embodiments are only exemplary, and are only used for providing a more visual and clear way of understanding the present disclosure, not limiting the technical solution described in the present invention. All other embodiments, and other simple alternatives and variations of the inventive solution, which would occur to a person skilled in the art without departing from the inventive concept, are within the scope of the invention.
Claims (4)
1. A process for improving coaxiality of a motor hollow shaft is characterized by comprising the following steps of: the process for improving the coaxiality of the motor hollow shaft comprises the following steps of: the tooling design is that a cushion sleeve is assembled at the spline end of a mandrel of a hollow shaft tyre; cutting a groove on the hollow shaft, assembling a retainer ring, and limiting by using the retainer ring; the method comprises the steps of (1) processing a small diameter of an internal spline and processing a blank cutter size, conical surfaces with two ends of 5 multiplied by 75 degrees and positioning sizes of a positioning tire of a broaching machine;
the hollow shaft processing technology specifically comprises the following steps: selecting bar stock, roughly turning the outer contour, finely turning the outer contour, grooving, turning the end surface, roughly boring the inner hole and finely boring the inner hole;
the method comprises the specific steps of finely turning the outer contour, grooving, turning the end face, roughly boring the inner hole and finely boring the inner hole: quenching and tempering, clamping one end of a chuck of a lathe, pushing the other end of an umbrella-shaped center, performing semi-finish turning on the other end of the umbrella-shaped center, wherein the average amount of each round surface outside the right end of the semi-finish turning is 6mm, the average amount of each flat end surface is 1.5mm, and the taper of 10mm of the length of the end part of the shaft is 30 DEG; one end of the chuck is clamped, the other end of the umbrella-shaped center top is provided with 6mm of uniform allowance of each outer circular surface at the left end of the semi-finish turning, and the uniform allowance of each end surface is 1.5; one end of the chuck is clamped, the other end of the center frame of the lathe is provided with a deep hole drill, and a left end spline blank hole is drilled to the small diameter end face of the spline; one end of the chuck is clamped, the other end of the center frame is finely turned into the small diameter of the spline at the right end and the sizes of all holes, the positioning size of the excircle is finely turned into the matched size of the positioning tire of the broaching machine, the conical surface with the angle of 5 multiplied by 75 degrees and the holes at the left end are turned into the two ends of the shaft hole, and the two end faces are flat; positioning a tire pull spline; one end of the chuck is clamped, the other end of the center frame is finely turned, the allowance of each outer circular surface of the right end is 0.8mm, each end face is flattened, and a groove and a chamfer are cut; one end of the chuck is clamped, the other end of the center frame is finely turned, the allowance of each outer circular surface of the left end is 0.8mm, each end face is flattened, and a groove and a chamfer are cut; nitriding the tooth surface; the upper mandrel is knocked tightly and is connected with the taper sleeve and the sleeve in series, the nut is screwed down, and the two ends are positioned by the central hole and ground into the outer circular surfaces of the left end; grinding the mandrel into outer circular surfaces at the right end; one end of the chuck is clamped, the other end of the center frame is aligned according to the outer circular surface, and a conical surface of 5 multiplied by 75 degrees is finely turned at the end part of the left end shaft hole; one end of the chuck is clamped, the other end of the center frame is aligned according to the outer circular surface, and a conical surface of 5 multiplied by 75 degrees is finely turned at the end part of the right end shaft hole; milling into key grooves.
2. The process for improving the coaxiality of a hollow shaft of a motor according to claim 1, wherein: the size of the idle knife is required to be in small clearance fit with the cushion sleeve, so that the positioning effect is achieved; the conical surfaces with the two ends of 5 multiplied by 75 degrees are on the same axis, so that the positioning references of the subsequent process are coaxial, and alignment deviation is not generated.
3. The process for improving the coaxiality of a hollow shaft of a motor according to claim 1, wherein: after selecting the bar, adding the flat two end faces of the bar by 4mm according to the total length, and punching a center hole.
4. The process for improving the coaxiality of a hollow shaft of a motor according to claim 1, wherein: the rough turning of the outer contour comprises the following specific steps: rough turning is carried out, wherein the average amount of each outer circular surface at the left end is 10mm, the average amount of each end surface is 2mm, and the taper of 10mm of the turning length of the end part of the shaft is 30 DEG; rough turning the outer circular surfaces of the right end with the average allowance of 10mm, leveling the end surfaces with the average allowance of 2mm, and turning the end part of the shaft with the taper of 10mm to obtain a 30-degree taper; the deep hole drill drills the spline small diameter and the blank hole with the equal allowance of 10mm; and turning 5 multiplied by 75 DEG conical surfaces at the two end parts of the shaft hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210796918.6A CN115156862B (en) | 2022-07-08 | 2022-07-08 | Process for improving coaxiality of motor hollow shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210796918.6A CN115156862B (en) | 2022-07-08 | 2022-07-08 | Process for improving coaxiality of motor hollow shaft |
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| CN115156862A CN115156862A (en) | 2022-10-11 |
| CN115156862B true CN115156862B (en) | 2023-12-08 |
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| CN108637595A (en) * | 2018-04-03 | 2018-10-12 | 宁夏西北骏马电机制造股份有限公司 | Coalcutter hollow shaft processing method and grinding tip for being ground hollow shaft |
| KR20190079066A (en) * | 2017-12-27 | 2019-07-05 | 주식회사 동우테크 | Apparatus and method for machining a cylindrical motor case for an automobile fuel pump motor |
| CN110666467A (en) * | 2019-11-26 | 2020-01-10 | 抚州申铃汽车配件有限责任公司 | Machining process of automobile front axle inner half shaft |
| WO2021196727A1 (en) * | 2020-03-29 | 2021-10-07 | 至玥腾风科技集团有限公司 | Manufacturing method for high-speed rotor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3108710B2 (en) * | 1997-12-26 | 2000-11-13 | 株式会社メタルアート | Method of manufacturing gear for transmission |
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2022
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| WO1979000944A1 (en) * | 1978-04-18 | 1979-11-15 | Elge Verken Ab | A method for manufacturing a tube array for a heat exchanger |
| EP1693150A1 (en) * | 2005-02-18 | 2006-08-23 | Halter Outils De Coupe | Relief grinding device for axial and radial machining |
| CN102069346A (en) * | 2009-11-23 | 2011-05-25 | 常州现代设计与制造中心 | Process for processing spindle sleeve of built-in motorized spindle unit |
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| CN115156862A (en) | 2022-10-11 |
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