CN111318863A - Method for processing hollow rotating shaft of driving motor - Google Patents
Method for processing hollow rotating shaft of driving motor Download PDFInfo
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- CN111318863A CN111318863A CN202010148207.9A CN202010148207A CN111318863A CN 111318863 A CN111318863 A CN 111318863A CN 202010148207 A CN202010148207 A CN 202010148207A CN 111318863 A CN111318863 A CN 111318863A
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- rotating shaft
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- 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
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Abstract
The invention discloses a method for processing a hollow rotating shaft of a driving motor, which specifically comprises the following steps: s1, selecting materials: the invention relates to the technical field of driving motors, in particular to a method for manufacturing a hollow rotating shaft by using a seamless steel pipe as a raw material. This processing method of hollow pivot of driving motor, through selecting for use 25CrMo4 seamless steel pipe as the raw and other materials of pivot, the performance intensity of pivot has been guaranteed, utilize in addition to place the shaping of hollow pivot at stock inside, the machine tooling time that the material consumes is gone to the pivot inside to great extent having shortened, the processing cost of pivot has been reduced, and the pivot intensity that adopts this shaping mode is higher, carry out quenching respectively to the pivot, thermal refining and thermal refining, great improvement the comprehensive mechanical properties of pivot, improve pivot life, utilize the swaging machine to carry out the processing through the both ends of pivot in addition, the quality of pivot is reduced effectively, be convenient for the pivot to use on driving motor.
Description
Technical Field
The invention relates to the technical field of driving motors, in particular to a method for processing a hollow rotating shaft of a driving motor.
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 a motor, bears the generation of driving torque and is used as a power source of various machines to convert electric energy into mechanical energy, most rotating shafts produced at present are outer spline solid shafts with lower cost, the mass increased by the solid shafts is not obvious in small motors, but in large motors, the mass is increased exponentially and multiplied along with the increase of the outer diameter of a motor shaft, the overall weight of the motor is improved, a small part of rotating shafts are inner spline hollow shafts and semi-hollow shafts, a certain effect is realized on the control of the quality of the motor shaft, but the material removal in the rotating shafts needs a large amount of machining time, and the cost is improved.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for processing a hollow rotating shaft of a driving motor, which solves the problems that the use of a solid rotating shaft improves the overall weight of the motor, the motor is inconvenient in actual use, a large amount of machining time is needed for removing materials in the rotating shaft, and the cost is increased.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a processing method of a hollow rotating shaft of a driving motor specifically comprises the following steps:
s1, selecting materials: taking a seamless steel pipe as a raw material of the hollow rotating shaft, installing the seamless steel pipe at a processing position on a sawing machine, and sawing the seamless steel pipe into a rotating shaft blank with the length of 180mm +/-5 mm according to the processing parameters of the processed hollow rotating shaft;
s2, heating the blank: placing the blank in a medium-frequency induction heater, and rapidly heating the blank by adopting medium-frequency induction heating, wherein the heating temperature is 950 ℃ and the heating time is 2 minutes;
s3, blank forming: placing a shaft core in the rapidly heated blank, then placing the whole blank into a forming die, carrying out preheating treatment on the forming die before use, carrying out forging and pressing processing on the blank in the forming die by adopting a forging press to rapidly press and form the blank, taking out the shaft core in the blank, and finishing the forming processing on the rotating shaft;
s4, performance processing: the formed rotating shaft is placed in a medium-frequency induction heater for quenching treatment, the rotating shaft is subjected to multistage heating by the medium-frequency induction heater, and the multistage heating mode is as follows: rapidly heating the rotating shaft at the heating temperature of 280 ℃ for 15 seconds, keeping the constant temperature for 30 seconds, continuously heating the rotating shaft at the heating temperature of 450 ℃ for 12 seconds, keeping the constant temperature for 15 seconds, cooling the rotating shaft to 150 ℃, keeping the constant temperature for 20 seconds, quenching the rotating shaft, tempering the rotating shaft at high temperature, aging the rotating shaft after quenching, and finishing the performance treatment of the rotating shaft;
s5, processing a rotating shaft: and (3) processing the spline grooves at the two ends of the rotating shaft subjected to performance treatment by using a rotary swaging machine, selecting the parameters of the spline grooves according to the use model of the rotating shaft, and simultaneously carrying out finish machining treatment on the surface of the rotating shaft and the inner walls of the two spline grooves to complete the whole processing of the hollow rotating shaft of the driving motor.
Preferably, in the step S1, the seamless steel tube is 25CrMo4, and the surface and the inner wall of the seamless steel tube are polished smooth.
Preferably, in step S2, the blank is placed in an environment of 380 ℃ after the blank is rapidly heated at 950 ℃ in the medium frequency induction heater.
Preferably, in step S2, the time interval between the blank after the medium frequency induction heating and the forming of the blank in the forming mold is less than 5 minutes.
Preferably, in step S3, the preheating treatment of the forming mold is specifically performed by: and placing the forming die in a heating box, wherein the heating temperature in the heating box is 180 ℃, and the heating time is 2 minutes.
Preferably, in the step S3, the forging press is 100 ton forging press.
Preferably, in step S4, the high-temperature tempering method includes: the rotating shaft is heated at 550 ℃, the heating time is 2 minutes, and the aging treatment mode is as follows: the rotating shaft is heated at 150 ℃ and kept at the constant temperature for 12 hours.
Preferably, in step S5, after all the hollow rotating shafts of the driving motor are processed, the quality of the hollow rotating shafts is checked.
(III) advantageous effects
The invention provides a method for processing a hollow rotating shaft of a driving motor. Compared with the prior art, the method has the following beneficial effects:
(1) the method for processing the hollow rotating shaft of the driving motor comprises the steps of taking a seamless steel tube as a raw material of the hollow rotating shaft, installing the seamless steel tube at a processing position on a sawing machine, sawing the seamless steel tube into rotating shaft blanks with the length of 180mm +/-5 mm according to technological parameters of the processed hollow rotating shaft, placing the blanks in a medium-frequency induction heater, rapidly heating the blanks by adopting medium-frequency induction heating, wherein the heating temperature is 950 ℃, the heating time is 2 minutes, placing a shaft core inside the rapidly heated blanks, then placing the whole blanks in a forming die, preheating the forming die before use, forging and pressing the blanks in the forming die by adopting a forging press to rapidly press and form the blanks, taking out the shaft core inside the blanks to complete the forming processing of the rotating shaft, and selecting the 25CrMo4 seamless steel tube as the raw material of the rotating shaft, the performance strength of the rotating shaft is guaranteed, in addition, the shaft core is placed inside the blank to complete the forming of the hollow rotating shaft, the machining time consumed by removing the materials inside the rotating shaft is greatly shortened, the machining cost of the rotating shaft is reduced, and the rotating shaft adopting the forming mode is high in strength.
(2) The processing method of the hollow rotating shaft of the driving motor comprises the following steps of placing the molded rotating shaft in a medium-frequency induction heater for quenching treatment, and performing multistage heating on the rotating shaft by using the medium-frequency induction heater, wherein the multistage heating mode is as follows: adopt the heating temperature to be 280 degrees centigrade, the heat time carries out rapid heating for 15 seconds to the pivot, the constant temperature keeps 30 seconds, adopt the heating temperature to be 450 degrees centigrade, the heat time continues to heat the pivot for 12 seconds, the constant temperature keeps 15 seconds, cool off the pivot to 150 degrees centigrade at last, the constant temperature keeps 20 seconds, after the quenching treatment of completion pivot, utilize high temperature tempering to carry out quenching and tempering to the pivot, then carry out ageing treatment to the pivot after accomplishing quenching and tempering, the performance treatment to the pivot is ended, utilize the rotary swaging machine to carry out spline groove processing to the pivot both ends after performance treatment, the parameter of spline groove is selected according to the pivot use model, carry out finish machining to the inner wall of pivot surface and two spline grooves simultaneously, accomplish the whole processing of driving motor hollow rotating shaft, the mode of high temperature tempering does: the rotating shaft is heated at 550 ℃, the heating time is 2 minutes, and the aging treatment mode is as follows: the rotating shaft is heated at 150 ℃, the constant temperature is kept for 12 hours, the rotating shaft is respectively subjected to quenching treatment, thermal refining treatment and thermal refining treatment, the comprehensive mechanical performance of the rotating shaft is improved to a large extent, the service life of the rotating shaft is prolonged, in addition, the two ends of the rotating shaft are subjected to processing treatment by using a rotary forging machine, the quality of the rotating shaft is effectively reduced, and the rotating shaft is convenient to use on a driving motor.
Drawings
FIG. 1 is a flow chart of the present invention for processing a hollow shaft of a driving motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a technical solution: a processing method of a hollow rotating shaft of a driving motor specifically comprises the following steps:
s1, selecting materials: taking a seamless steel pipe as a raw material of the hollow rotating shaft, installing the seamless steel pipe at a processing position on a sawing machine, and sawing the seamless steel pipe into a rotating shaft blank with the length of 180mm +/-5 mm according to the processing parameters of the processed hollow rotating shaft;
s2, heating the blank: placing the blank in a medium-frequency induction heater, and rapidly heating the blank by adopting medium-frequency induction heating, wherein the heating temperature is 950 ℃ and the heating time is 2 minutes;
s3, blank forming: placing a shaft core in the rapidly heated blank, then placing the whole blank into a forming die, carrying out preheating treatment on the forming die before use, carrying out forging and pressing processing on the blank in the forming die by adopting a forging press to rapidly press and form the blank, taking out the shaft core in the blank, and finishing the forming processing on the rotating shaft;
s4, performance processing: the formed rotating shaft is placed in a medium-frequency induction heater for quenching treatment, the rotating shaft is subjected to multistage heating by the medium-frequency induction heater, and the multistage heating mode is as follows: rapidly heating the rotating shaft at the heating temperature of 280 ℃ for 15 seconds, keeping the constant temperature for 30 seconds, continuously heating the rotating shaft at the heating temperature of 450 ℃ for 12 seconds, keeping the constant temperature for 15 seconds, cooling the rotating shaft to 150 ℃, keeping the constant temperature for 20 seconds, quenching the rotating shaft, tempering the rotating shaft at high temperature, aging the rotating shaft after quenching, and finishing the performance treatment of the rotating shaft;
s5, processing a rotating shaft: and (3) processing the spline grooves at the two ends of the rotating shaft subjected to performance treatment by using a rotary swaging machine, selecting the parameters of the spline grooves according to the use model of the rotating shaft, and simultaneously carrying out finish machining treatment on the surface of the rotating shaft and the inner walls of the two spline grooves to complete the whole processing of the hollow rotating shaft of the driving motor.
In the invention, in step S1, 25CrMo4 is selected as the material of the seamless steel tube, and the surface and the inner wall of the seamless steel tube are both polished smooth.
In the present invention, in step S2, the blank is placed in an environment of 380 ℃ after the blank is rapidly heated at 950 ℃ in the medium frequency induction heater.
In the present invention, in step S2, the time interval between the blank after the intermediate frequency induction heating and the forming process of the blank in the forming mold is less than 5 minutes.
In the present invention, in step S3, the specific manner of the mold preheating process is: and placing the forming die in a heating box, wherein the heating temperature in the heating box is 180 ℃, and the heating time is 2 minutes.
In the present invention, in step S3, a 100-ton forging press is used as the forging press type.
In the present invention, in step S4, the high temperature tempering method is: the rotating shaft is heated at 550 ℃, the heating time is 2 minutes, and the aging treatment mode is as follows: the rotating shaft is heated at 150 ℃ and kept at the constant temperature for 12 hours.
In the present invention, in step S5, after the entire processing of the hollow rotary shaft of the driving motor is completed, the quality of the hollow rotary shaft is inspected.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A processing method of a hollow rotating shaft of a driving motor is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, selecting materials: taking a seamless steel pipe as a raw material of the hollow rotating shaft, installing the seamless steel pipe at a processing position on a sawing machine, and sawing the seamless steel pipe into a rotating shaft blank with the length of 180mm +/-5 mm according to the processing parameters of the processed hollow rotating shaft;
s2, heating the blank: placing the blank in a medium-frequency induction heater, and rapidly heating the blank by adopting medium-frequency induction heating, wherein the heating temperature is 950 ℃ and the heating time is 2 minutes;
s3, blank forming: placing a shaft core in the rapidly heated blank, then placing the whole blank into a forming die, carrying out preheating treatment on the forming die before use, carrying out forging and pressing processing on the blank in the forming die by adopting a forging press to rapidly press and form the blank, taking out the shaft core in the blank, and finishing the forming processing on the rotating shaft;
s4, performance processing: the formed rotating shaft is placed in a medium-frequency induction heater for quenching treatment, the rotating shaft is subjected to multistage heating by the medium-frequency induction heater, and the multistage heating mode is as follows: rapidly heating the rotating shaft at the heating temperature of 280 ℃ for 15 seconds, keeping the constant temperature for 30 seconds, continuously heating the rotating shaft at the heating temperature of 450 ℃ for 12 seconds, keeping the constant temperature for 15 seconds, cooling the rotating shaft to 150 ℃, keeping the constant temperature for 20 seconds, quenching the rotating shaft, tempering the rotating shaft at high temperature, aging the rotating shaft after quenching, and finishing the performance treatment of the rotating shaft;
s5, processing a rotating shaft: and (3) processing the spline grooves at the two ends of the rotating shaft subjected to performance treatment by using a rotary swaging machine, selecting the parameters of the spline grooves according to the use model of the rotating shaft, and simultaneously carrying out finish machining treatment on the surface of the rotating shaft and the inner walls of the two spline grooves to complete the whole processing of the hollow rotating shaft of the driving motor.
2. The method for processing the hollow rotating shaft of the driving motor according to claim 1, wherein the method comprises the following steps: in the step S1, the seamless steel tube is made of 25CrMo4, and the surface and the inner wall of the seamless steel tube are polished smooth.
3. The method for processing the hollow rotating shaft of the driving motor according to claim 1, wherein the method comprises the following steps: in step S2, the blank is placed in an environment of 380 ℃ after the blank is rapidly heated at 950 ℃ in the medium frequency induction heater.
4. The method for processing the hollow rotating shaft of the driving motor according to claim 1, wherein the method comprises the following steps: in step S2, the time interval between the blank after the intermediate frequency induction heating and the forming of the blank in the forming mold is less than 5 minutes.
5. The method for processing the hollow rotating shaft of the driving motor according to claim 1, wherein the method comprises the following steps: in step S3, the specific manner of preheating the molding die is as follows: and placing the forming die in a heating box, wherein the heating temperature in the heating box is 180 ℃, and the heating time is 2 minutes.
6. The method for processing the hollow rotating shaft of the driving motor according to claim 1, wherein the method comprises the following steps: in the step S3, the forging press is 100 ton.
7. The method for processing the hollow rotating shaft of the driving motor according to claim 1, wherein the method comprises the following steps: in step S4, the high temperature tempering method is as follows: the rotating shaft is heated at 550 ℃, the heating time is 2 minutes, and the aging treatment mode is as follows: the rotating shaft is heated at 150 ℃ and kept at the constant temperature for 12 hours.
8. The method for processing the hollow rotating shaft of the driving motor according to claim 1, wherein the method comprises the following steps: in step S5, after all the hollow shafts of the driving motor are processed, the quality of the hollow shafts is checked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010148207.9A CN111318863A (en) | 2020-03-05 | 2020-03-05 | Method for processing hollow rotating shaft of driving motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010148207.9A CN111318863A (en) | 2020-03-05 | 2020-03-05 | Method for processing hollow rotating shaft of driving motor |
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| CN111318863A true CN111318863A (en) | 2020-06-23 |
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| CN202010148207.9A Pending CN111318863A (en) | 2020-03-05 | 2020-03-05 | Method for processing hollow rotating shaft of driving motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114101570A (en) * | 2021-12-02 | 2022-03-01 | 江苏攀森智能科技有限公司 | Machining method of motor rotating shaft |
| WO2022213991A1 (en) * | 2021-04-06 | 2022-10-13 | 江苏太平洋精锻科技股份有限公司 | Method for forming hollow motor shaft |
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| CN102248381A (en) * | 2011-07-08 | 2011-11-23 | 应华生 | Method for processing lathe spindle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2022213991A1 (en) * | 2021-04-06 | 2022-10-13 | 江苏太平洋精锻科技股份有限公司 | Method for forming hollow motor shaft |
| CN114101570A (en) * | 2021-12-02 | 2022-03-01 | 江苏攀森智能科技有限公司 | Machining method of motor rotating shaft |
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Application publication date: 20200623 |
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