CN114101570A - Machining method of motor rotating shaft - Google Patents
Machining method of motor rotating shaft Download PDFInfo
- Publication number
- CN114101570A CN114101570A CN202111461425.9A CN202111461425A CN114101570A CN 114101570 A CN114101570 A CN 114101570A CN 202111461425 A CN202111461425 A CN 202111461425A CN 114101570 A CN114101570 A CN 114101570A
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- China
- Prior art keywords
- rotating shaft
- blank
- treatment
- forming die
- namely
- Prior art date
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Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000003754 machining Methods 0.000 title claims description 7
- 238000005242 forging Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 3
- 238000005256 carbonitriding Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 238000003672 processing method Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000304 warm extrusion Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/066—Making machine elements axles or shafts splined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/063—Making machine elements axles or shafts hollow
-
- 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
- H02K15/14—Casings; Enclosures; Supports
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a processing method of a motor rotating shaft, belonging to the field of motor rotating shaft processing, and comprising the following processing steps: selecting materials, namely taking a seamless steel pipe with grooves at two ends as a blank of the hollow rotating shaft; the hollow steel pipe with grooves at two ends is directly processed, the flange outside the motor rotating shaft can be formed through one-time forging and pressing, and the spline is extruded in the motor rotating shaft.
Description
Technical Field
The invention relates to the field of motor rotating shaft processing, in particular to a processing method of a motor rotating shaft.
Background
The hollow shaft is generally provided with a through hole at the center of the shaft body, an inner key groove is arranged in the through hole, a stepped cylinder is processed on the outer surface of the shaft body, an outer key groove is arranged on the outer surface of the shaft body, the central through hole of the shaft is sleeved with a main shaft of the barrel, and input power is directly transmitted to the main shaft of the barrel by driving the shaft through a transmission gear arranged on the cylinder on the outer surface of the shaft body.
The motor rotating shaft is used as a vital structural part of the motor, bears the generated driving torque, is used as a power source of various machines, converts electric energy into mechanical energy, most of rotating shafts produced at present are external spline solid shafts with low cost, and are formed by hot forging the solid shafts.
Disclosure of Invention
The invention aims to provide a method for processing a motor rotating shaft, which can effectively improve metal compactness and reduce processing cost.
The technical scheme of the invention is as follows: a processing method of a motor rotating shaft specifically comprises the following steps:
step 1): selecting materials, namely taking a seamless steel pipe with grooves at two ends as a blank of the hollow rotating shaft;
step 2): heating the blank, namely placing the blank in a heater to rapidly heat the blank, wherein the heating temperature is 800-;
step 3): forming a blank, namely placing a shaft core in the rapidly heated blank, then integrally placing the blank into a forming die, arranging a heating pipe in the forming die, preheating the forming die by the heating pipe before use, wherein the preheating temperature is 300-350 ℃, forging and pressing the blank in the forming die by using a forging press to form a flange, and upsetting and extruding the blank by the shaft core under the action of the forging press to form a spline;
step 4): performing performance treatment, namely placing the molded rotating shaft for quenching treatment, performing thermal refining treatment on the rotating shaft by utilizing high-temperature tempering after the quenching treatment of the rotating shaft is completed, and then performing aging treatment on the rotating shaft after the thermal refining treatment is completed;
step 5): and (4) performing rust prevention treatment, namely coating rust prevention oil on the surface after the rotating shaft is manufactured.
According to a further technical scheme, the blank is forged and normalized before the step 2).
In the further technical scheme, in the step 3), the surfaces of the rotating shaft and the spline are subjected to carbonitriding, and the thickness of a carburized layer is 0.5-0.8 mm.
The invention has the beneficial effects that:
according to the invention, the hollow steel pipe with grooves at two ends is directly processed, the flange outside the motor rotating shaft can be formed by forging and pressing once, and the spline is extruded in the motor rotating shaft, so that the method saves the machining time consumed by removing materials from the inside of the rotating shaft, reduces the processing cost of the rotating shaft, and has the advantages of higher rotating shaft strength, higher extrusion forming precision and better rotating shaft forming technical effect.
Drawings
FIG. 1 is a flow chart of the motor shaft processing of the present invention.
Detailed Description
The invention will be further illustrated and understood by the following non-limiting examples.
As shown in fig. 1, the invention provides a method for processing a motor rotating shaft, which specifically comprises the following steps:
step 1): selecting materials, namely taking a seamless steel pipe with grooves at two ends as a blank of the hollow rotating shaft;
step 2): forging and normalizing the blank, heating the blank, placing the blank in a heater to rapidly heat the blank at the temperature of 800-850 ℃ for 10 minutes;
step 3): forming a blank, namely placing a shaft core in the rapidly heated blank, then integrally placing the blank into a forming die, arranging a heating pipe in the forming die, preheating the forming die by the heating pipe before use, wherein the preheating temperature is 300-350 ℃, forging and pressing the blank in the forming die by using a forging press to form a flange, and upsetting and extruding the blank by the shaft core under the action of the forging press to form a spline; carbonitriding the surfaces of the counter rotating shaft and the spline, wherein the thickness of a carburized layer is 0.5-0.8 mm; checking the tooth root, wherein the detection part is on the cross section of the middle part of the tooth width, and the intersection of the central line of the tooth and the tooth root circle; the surface hardness requirement is as follows: HRA80.1-82.8(HRC 58-63); surface retained austenite and martensite: 1-4; carbide (hardened layer defect): 1-4 grade; the hardness of the core part is treated by 30-45 HRC, and the grain size grade is 6-10 grade;
step 4): performing performance treatment, namely placing the molded rotating shaft for quenching treatment, performing thermal refining treatment on the rotating shaft by utilizing high-temperature tempering after the quenching treatment of the rotating shaft is completed, and then performing aging treatment on the rotating shaft after the thermal refining treatment is completed; then detecting internal defects;
step 5): and (4) performing rust prevention treatment, namely coating rust prevention oil on the surface after the rotating shaft is manufactured.
According to the invention, in the step 1), the seamless steel tube with grooves at two ends is directly taken as the blank of the hollow rotating shaft, the blank can directly form the flange outside the motor rotating shaft after being forged and pressed once and extrude the spline in the motor rotating shaft, so that the machining time consumed for removing materials in the rotating shaft is saved, the machining cost of the rotating shaft is greatly reduced by simplifying the machining process, the forming mode is warm extrusion, the extrusion forming precision is higher, the metal compactness is improved, the strength of the generated motor rotating shaft is higher, and the technical effect of the rotating shaft forming is better.
Claims (3)
1. The machining method of the motor rotating shaft is characterized by comprising the following steps:
step 1): selecting materials, namely taking a seamless steel pipe with grooves at two ends as a blank of the hollow rotating shaft;
step 2): heating the blank, namely placing the blank in a heater to rapidly heat the blank, wherein the heating temperature is 800-;
step 3): forming a blank, namely placing a shaft core in the rapidly heated blank, then integrally placing the blank into a forming die, arranging a heating pipe in the forming die, preheating the forming die by the heating pipe before use, wherein the preheating temperature is 300-350 ℃, forging and pressing the blank in the forming die by using a forging press to form a flange, and upsetting and extruding the blank by the shaft core under the action of the forging press to form a spline;
step 4): performing performance treatment, namely placing the molded rotating shaft for quenching treatment, performing thermal refining treatment on the rotating shaft by utilizing high-temperature tempering after the quenching treatment of the rotating shaft is completed, and then performing aging treatment on the rotating shaft after the thermal refining treatment is completed;
step 5): and (4) performing rust prevention treatment, namely coating rust prevention oil on the surface after the rotating shaft is manufactured.
2. The method for processing the rotating shaft of the motor according to claim 1, wherein the blank is forged and normalized before the step 2).
3. The method for processing the rotating shaft of the motor according to claim 1, wherein the rotating shaft and the spline surface are subjected to carbonitriding in step 3), and the thickness of the carburized layer is 0.5 to 0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461425.9A CN114101570A (en) | 2021-12-02 | 2021-12-02 | Machining method of motor rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461425.9A CN114101570A (en) | 2021-12-02 | 2021-12-02 | Machining method of motor rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114101570A true CN114101570A (en) | 2022-03-01 |
Family
ID=80366443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111461425.9A Pending CN114101570A (en) | 2021-12-02 | 2021-12-02 | Machining method of motor rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114101570A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108406245A (en) * | 2018-05-28 | 2018-08-17 | 重庆创精温锻成型有限公司 | A kind of lightweight new-energy automobile driving motor shaft production method |
| CN110091138A (en) * | 2019-06-18 | 2019-08-06 | 常熟希那基汽车零件有限公司 | A kind of novel hollow production method of shaft |
| CN110900122A (en) * | 2019-11-12 | 2020-03-24 | 武汉科技大学 | Lightweight motor shaft forming method |
| CN111318863A (en) * | 2020-03-05 | 2020-06-23 | 湖北隐冠轴业有限公司 | Method for processing hollow rotating shaft of driving motor |
| CN111940653A (en) * | 2020-07-06 | 2020-11-17 | 湖北隐冠轴业有限公司 | Outer surface machining process of hollow shaft |
| CN113477857A (en) * | 2021-04-06 | 2021-10-08 | 江苏太平洋精锻科技股份有限公司 | Forming processing method of hollow motor shaft |
-
2021
- 2021-12-02 CN CN202111461425.9A patent/CN114101570A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108406245A (en) * | 2018-05-28 | 2018-08-17 | 重庆创精温锻成型有限公司 | A kind of lightweight new-energy automobile driving motor shaft production method |
| CN110091138A (en) * | 2019-06-18 | 2019-08-06 | 常熟希那基汽车零件有限公司 | A kind of novel hollow production method of shaft |
| CN110900122A (en) * | 2019-11-12 | 2020-03-24 | 武汉科技大学 | Lightweight motor shaft forming method |
| CN111318863A (en) * | 2020-03-05 | 2020-06-23 | 湖北隐冠轴业有限公司 | Method for processing hollow rotating shaft of driving motor |
| CN111940653A (en) * | 2020-07-06 | 2020-11-17 | 湖北隐冠轴业有限公司 | Outer surface machining process of hollow shaft |
| CN113477857A (en) * | 2021-04-06 | 2021-10-08 | 江苏太平洋精锻科技股份有限公司 | Forming processing method of hollow motor shaft |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220301 |
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| RJ01 | Rejection of invention patent application after publication |