CN111546000A - Production and processing technology of high-speed rotor shaft - Google Patents
Production and processing technology of high-speed rotor shaft Download PDFInfo
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- CN111546000A CN111546000A CN202010368829.2A CN202010368829A CN111546000A CN 111546000 A CN111546000 A CN 111546000A CN 202010368829 A CN202010368829 A CN 202010368829A CN 111546000 A CN111546000 A CN 111546000A
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- rotor shaft
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- speed rotor
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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
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- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a production and processing technology of a high-speed rotor shaft, and relates to the technical field of rotor shafts; the problem that some central holes do not meet the requirements but cannot be adjusted and modified to cause scrapping after machining is completed is solved; the method specifically comprises the following steps of S1: selecting materials; s2: blanking round steel; s3: rough machining; s4: semi-finishing; s5: heat treatment; s6: fine processing; s7: and detecting the appearance and the performance of the product after the processing is finished. The area of the excircle at two ends of the rotor shaft core shaft is increased, so that the rigidity of the core shaft can be improved as much as possible; the allowance of about 5-10mm is reserved at the two ends of the rotor shaft, so that secondary correction can be conveniently carried out at the later stage according to the processing requirement, the reserved part is directly cut off by the secondary correction in actual operation, the center hole is processed again, the original center hole is not corrected and maintained, the waste of manpower and material resources is avoided, the probability of scrapping the rotor shaft can be greatly reduced, and the maintenance cost is facilitated.
Description
Technical Field
The invention relates to the technical field of rotor shafts, in particular to a production and processing technology of a high-speed rotor shaft.
Background
The rotor shaft and the body refer to forgings which have enough mechanical strength, can bear torque transmitted by a prime motor and huge electromagnetic torque of sudden short circuit of an outlet of a generator, have good magnetic conductivity, and are used as carriers of main magnetic poles of the generator, but the processing process of the rotor shaft is too complicated, and the rotor shaft processed by the processing method in the prior art has unstable quality, high repair rate and short service life, so that the production and processing technology of the high-speed rotor shaft is needed.
Through retrieval, the Chinese patent with publication number CN110270796A discloses a processing technology of a motor rotor shaft, which comprises the following operation steps; step one, rough turning A; step two, rough turning B; step three, drilling a deep hole along the axial direction from the end face a; step four, finish turning A, step five, finish turning B; step six, grinding a reference; step seven, gear shaping; eighthly, milling a key groove; step nine, carburizing and quenching; step ten, grinding a central hole; step eleven, threading the outer circle i; step twelve, grinding the excircle a and grinding the excircle b; step thirteen, grinding an excircle g, an excircle i and an excircle e; step fourteen, finish turning C; and step fifteen, cleaning and coating antirust oil.
The rotor shaft machining process and the rotor shaft thereof in the patent have the following defects: after the machining is finished, some rotor shafts with central holes which do not meet the requirements are directly scrapped due to the fact that adjustment and modification cannot be carried out, and resource and cost loss is caused.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a production and processing technology of a high-speed rotor shaft.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production and processing technology of a high-speed rotor shaft comprises the following steps;
s1: selecting materials;
s2: blanking round steel;
s3: rough machining;
s4: semi-finishing;
s5: heat treatment;
s6: fine processing;
s7: and detecting the appearance and the performance of the product after the processing is finished.
Preferably: and the S1 is made of No. 45 steel with the size of phi 180mm 2530mm round steel material.
Preferably: and in the step S3, most of allowance on the steel is cut off, so that the steel is close to a finished part in shape and size, a central hole is drilled on the flush end face of the steel, the turning outer circle is phi 176 mm-phi 177mm, the taper is required to be not more than 0.5, and the out-of-roundness is 0.05.
Preferably: in the step S4, the main surface is finished by a certain finishing allowance, and the allowance at both ends of the rotor shaft is 5-10 mm.
Preferably: the heat treatment step in S5 is as follows: s51: putting the steel into a heat treatment furnace; s52: heating the heat treatment furnace to more than 200 ℃, and preserving heat for 12 hours; s53: and (5) stress relief annealing.
Preferably: the stress relief annealing step in the step S53 is as follows: the heat treatment furnace is firstly slowly heated up and is ensured to be heated to below 400 ℃ within 2 hours, then the heat treatment furnace is heated to 600 ℃ to 650 ℃ at the speed of 100 ℃ per hour after 2 hours, the temperature difference of each zone in the heating process of the heat treatment furnace is kept to be not more than 20 ℃, the heat treatment furnace is subjected to heat preservation operation when the heat treatment furnace is heated to 600 ℃ to 650 ℃, the heat preservation time is 4 to 6 hours, and finally, after the heat treatment furnace is closed, the annealing piece is removed from the heat treatment furnace and is placed in static air, and the annealing piece is cooled to the room temperature when the annealing piece is cooled to below 200 ℃ at the cooling speed of 50 ℃ per hour.
Preferably: and S6, machining by using a process of turning instead of grinding, namely machining and cutting a workpiece at high speed on a numerical control lathe by using a cutter material with high hardness, high strength and high wear resistance, and putting the iron core into a drying room for pre-drying for 10 hours at the temperature of 125-130 ℃ in advance during finish machining.
Preferably: and after each step of S1-S6, the steps of deburring, derusting, cleaning and applying rust preventive oil are required.
Preferably: and detecting the appearance and the performance in the S7:
s71: and (3) appearance inspection: in the S7, appearance inspection: whether the outer surface has serious depressions and scratches is detected through naked eyes at first, if the outer surface has serious depressions and scratches, the integral rotor shaft is detected in a 360-degree dead angle-free mode through a professional clamp and a high-precision instrument, and whether the depressions and scratches exist on the surface of the rotor shaft is detected.
S72: and (3) electrical property detection: electrical property detection in S7: the method comprises the steps of firstly measuring the insulation resistance value of an iron core, then pressing a rotor shaft into a heated rotor iron core, welding rotor star points, installing collecting rings, wiring, binding, finally carrying out no-load test, and detecting whether the operation is good or not.
The invention has the beneficial effects that:
1. the areas of the outer circles at the two ends of the rotor shaft are increased, so that the rigidity of the rotor shaft can be improved as much as possible; the allowance of about 5-10mm is reserved at the two ends of the rotor shaft, so that secondary correction can be conveniently carried out at the later stage according to processing requirements, the reserved part needs to be directly cut off in the secondary correction in the actual operation link, then the center hole is processed again, the original center hole is not corrected and maintained, the waste of manpower and material resources is avoided, the probability of scrapping the rotor shaft can be greatly reduced, and the maintenance cost is facilitated.
2. In the production process of the rotor shaft, the steps of deburring, derusting, cleaning and applying anti-rust oil are carried out at the end of each step in S1-S6, so that the generation of large errors caused by some reasons in the production process is ensured, the refinement of each step is ensured, and the rotor shaft obtained by production is more precise; the appearance and the performance of the rotating shaft are further detected after the production is finished, and the quality of products is guaranteed.
3. The processing technology of the rotor shaft by turning instead of grinding is adopted, and the rotor shaft by turning instead of grinding is used for processing, so that the consumption of required equipment is less, the land area of a workshop can be saved, the waste of electric quantity can be reduced, the quantity and the frequent times of equipment maintenance can be reduced, and the cost expenditure is greatly reduced; the process has the advantages that not only are a plurality of cutters mounted, but also the cutter changing frequency is very high, the realization of very high machine tool rotating speed can be realized, various surfaces can be effectively processed quickly, and the auxiliary time is short, so that the turning efficiency is higher than that of grinding by 5-7 times; the requirement on the working skill of workers is low, so that the workers can be easily found.
Drawings
Fig. 1 is a production flow chart of a production and processing process of a high-speed rotor shaft according to the present invention.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1:
a production and processing technology of a high-speed rotor shaft is shown in figure 1 and comprises the following steps;
s1: selecting materials;
s2: blanking round steel;
s3: rough machining;
s4: semi-finishing;
s5: heat treatment;
s6: fine processing;
s7: and detecting the appearance and the performance of the product after the processing is finished.
And the S1 is made of No. 45 steel with the size of phi 180mm 2530mm round steel material.
And in the step S3, most of allowance on the steel is cut off, so that the steel is close to a finished part in shape and size, a central hole is drilled on the flush end face of the steel, the turning outer circle is phi 176 mm-phi 177mm, the taper is required to be not more than 0.5, and the out-of-roundness is 0.05.
In the step S4, the main surface is finished by a certain finishing allowance, and the allowance at both ends of the rotor shaft is 5-10 mm.
The heat treatment step in S5 is as follows:
s51: putting the steel into a heat treatment furnace;
s52: heating the heat treatment furnace to more than 200 ℃, and preserving heat for 12 hours;
s53: and (5) stress relief annealing.
The stress relief annealing step in the step S53 is as follows: the heat treatment furnace is firstly slowly heated up and is ensured to be heated to below 400 ℃ within 2 hours, then the heat treatment furnace is heated to 600 ℃ to 650 ℃ at the speed of 100 ℃ per hour after 2 hours, the temperature difference of each zone in the heating process of the heat treatment furnace is kept to be not more than 20 ℃, the heat treatment furnace is subjected to heat preservation operation when the heat treatment furnace is heated to 600 ℃ to 650 ℃, the heat preservation time is 4 to 6 hours, and finally, after the heat treatment furnace is closed, the annealing piece is removed from the heat treatment furnace and is placed in static air, and the annealing piece is cooled to the room temperature when the annealing piece is cooled to below 200 ℃ at the cooling speed of 50 ℃ per hour.
S6 is a process method for processing and cutting a workpiece at high speed by using a process of turning instead of grinding, namely using a tool material with high hardness, high strength and high wear resistance on a numerical control lathe, and the process method adopts a numerical control lathe CAK6180 for processing, a FANUC numerical control system, a full digital servo motor and a control system, a plastic-coated ball screw nut and a guide rail, has the functions of low geometric precision and friction coefficient of the guide rail and automatic compensation of screw pitch and the like, can effectively complete track motion and accurate circular interpolation, has the most stable quality and high processing precision, adopts a Shantevick cubic boron nitride blade which has very strong wear resistance and cutting performance, can easily process a rotor shaft, and puts an iron core into a drying room in advance for pre-drying for 10 hours during finish machining, the temperature is 125-130 ℃.
And after each step of S1-S6, the steps of deburring, derusting, cleaning and applying rust preventive oil are required.
Example 2:
a production and processing technology of a high-speed rotor shaft is shown in figure 1: comprises the following steps.
S1: selecting materials;
s2: blanking round steel;
s3: rough machining;
s4: semi-finishing;
s5: heat treatment;
s6: fine processing;
s7: and detecting the appearance and the performance of the product after the processing is finished.
And the S1 is made of No. 45 steel with the size of phi 180mm 2530mm round steel material.
And in the step S3, most of allowance on the steel is cut off, so that the steel is close to a finished part in shape and size, a central hole is drilled on the flush end face of the steel, the turning outer circle is phi 176 mm-phi 177mm, the taper is required to be not more than 0.5, and the out-of-roundness is 0.05.
In the step S4, the main surface is finished by a certain finishing allowance, and the allowance at both ends of the rotor shaft is 5-10 mm.
The heat treatment step in S5 is as follows:
s51: putting the steel into a heat treatment furnace;
s52: heating the heat treatment furnace to more than 200 ℃, and preserving heat for 12 hours;
s53: and (5) stress relief annealing.
The stress relief annealing step in the step S53 is as follows: the heat treatment furnace is firstly slowly heated up and is ensured to be heated to below 400 ℃ within 2 hours, then the heat treatment furnace is heated to 600 ℃ to 650 ℃ at the speed of 100 ℃ per hour after 2 hours, the temperature difference of each zone in the heating process of the heat treatment furnace is kept to be not more than 20 ℃, the heat treatment furnace is subjected to heat preservation operation when the heat treatment furnace is heated to 600 ℃ to 650 ℃, the heat preservation time is 4 to 6 hours, and finally, after the heat treatment furnace is closed, the annealing piece is removed from the heat treatment furnace and is placed in static air, and the annealing piece is cooled to the room temperature when the annealing piece is cooled to below 200 ℃ at the cooling speed of 50 ℃ per hour.
S6 is a process method for processing and cutting a workpiece at high speed by using a process of turning instead of grinding, namely using a tool material with high hardness, high strength and high wear resistance on a numerical control lathe, and the process method adopts a numerical control lathe CAK6180 for processing, a FANUC numerical control system, a full digital servo motor and a control system, a plastic-coated ball screw nut and a guide rail, has the functions of low geometric precision and friction coefficient of the guide rail and automatic compensation of screw pitch and the like, can effectively complete track motion and accurate circular interpolation, has the most stable quality and high processing precision, adopts a Shantevick cubic boron nitride blade which has very strong wear resistance and cutting performance, can easily process a rotor shaft, and puts an iron core into a drying room in advance for pre-drying for 10 hours during finish machining, the temperature is 125-130 ℃.
And after each step of S1-S6, the steps of deburring, derusting, cleaning and applying rust preventive oil are required.
And detecting the appearance and the performance in the S7:
s71: and (3) appearance inspection: in the S7, appearance inspection: whether the outer surface has serious depressions and scratches is detected through naked eyes at first, if the outer surface has serious depressions and scratches, the integral rotor shaft is detected in a 360-degree dead angle-free mode through a professional clamp and a high-precision instrument, and whether the depressions and scratches exist on the surface of the rotor shaft is detected.
S72: and (3) electrical property detection: electrical property detection in S7: the method comprises the steps of firstly measuring the insulation resistance value of an iron core, then pressing a rotor shaft into a heated rotor iron core, welding rotor star points, installing collecting rings, wiring, binding, finally carrying out no-load test, and detecting whether the operation is good or not.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A production and processing technology of a high-speed rotor shaft comprises the following steps;
s1: selecting materials;
s2: blanking round steel;
s3: rough machining;
s4: semi-finishing;
s5: heat treatment;
s6: fine processing;
s7: and detecting the appearance and the performance of the product after the processing is finished.
2. The process for manufacturing a high-speed rotor shaft according to claim 1, wherein the steel material S1 is a round steel material with the size phi 180mm 2530 mm.
3. The process for producing a high-speed rotor shaft according to claim 2, wherein most of the excess of the steel material is cut in S3 to make the steel material close to the finished part in shape and size, and a center hole is drilled in the flush end face of the steel material, the outer circle is turned to phi 176 mm-phi 177mm, and the taper is required to be not more than 0.5 and out of roundness is 0.05.
4. The process for producing a high-speed rotor shaft according to claim 3, wherein the major surface is finished by a finishing allowance in S4, and the allowance at both ends of the rotor shaft is 5-10 mm.
5. The manufacturing process of a high-speed rotor shaft according to claim 4, wherein the heat treatment step in S5 is as follows: s51: putting the steel into a heat treatment furnace; s52: heating the heat treatment furnace to more than 200 ℃, and preserving heat for 12 hours; s53: and (5) stress relief annealing.
6. The manufacturing process of a high-speed rotor shaft according to claim 5, wherein the step of stress relief annealing in S53 is: the heat treatment furnace is firstly slowly heated up and is ensured to be heated to below 400 ℃ within 2 hours, then the heat treatment furnace is heated to 600 ℃ to 650 ℃ at the speed of 100 ℃ per hour after 2 hours, the temperature difference of each zone in the heating process of the heat treatment furnace is kept to be not more than 20 ℃, the heat treatment furnace is subjected to heat preservation operation when the heat treatment furnace is heated to 600 ℃ to 650 ℃, the heat preservation time is 4 to 6 hours, and finally, after the heat treatment furnace is closed, the annealing piece is removed from the heat treatment furnace and is placed in static air, and the annealing piece is cooled to the room temperature when the annealing piece is cooled to below 200 ℃ at the cooling speed of 50 ℃ per hour.
7. The process for producing a high-speed rotor shaft according to claim 6, wherein the step S6 is a step of machining a workpiece by turning instead of grinding in a numerically controlled lathe using a high hardness and high strength and high wear resistance tool material at a high speed, and the core is placed in an oven to be pre-baked at 125-130 ℃ for 10 hours in advance during finishing.
8. The process for producing and processing a high-speed rotor shaft according to claim 1, wherein the steps of deburring, derusting, cleaning and applying rust preventive oil are required at the end of each step from S1 to S6.
9. The production and processing technology of the high-speed rotor shaft is characterized in that the appearance and the performance of the high-speed rotor shaft are detected in S7:
s71: and (3) appearance inspection: in the S7, appearance inspection: whether the outer surface has serious depressions and scratches is detected through naked eyes at first, if the outer surface has serious depressions and scratches, the integral rotor shaft is detected in a 360-degree dead angle-free mode through a professional clamp and a high-precision instrument, and whether the depressions and scratches exist on the surface of the rotor shaft is detected.
S72: and (3) electrical property detection: electrical property detection in S7: the method comprises the steps of firstly measuring the insulation resistance value of an iron core, then pressing a rotor shaft into a heated rotor iron core, welding rotor star points, installing collecting rings, wiring, binding, finally carrying out no-load test, and detecting whether the operation is good or not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010368829.2A CN111546000A (en) | 2020-05-03 | 2020-05-03 | Production and processing technology of high-speed rotor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010368829.2A CN111546000A (en) | 2020-05-03 | 2020-05-03 | Production and processing technology of high-speed rotor shaft |
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| CN111546000A true CN111546000A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010368829.2A Pending CN111546000A (en) | 2020-05-03 | 2020-05-03 | Production and processing technology of high-speed rotor shaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118074388A (en) * | 2024-04-17 | 2024-05-24 | 苏州英磁新能源科技有限公司 | Anti-magnetic leakage rotor and preparation method thereof |
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| US20140093377A1 (en) * | 2012-10-02 | 2014-04-03 | General Electric Company | Extruded rotor, a steam turbine having an extruded rotor and a method for producing an extruded rotor |
| CN103722351A (en) * | 2013-12-04 | 2014-04-16 | 大连洁能重工机械有限公司 | Process for machining gear main shaft of high-power wind turbine generator set |
| CN104439996A (en) * | 2014-12-17 | 2015-03-25 | 常熟市华星精密铸件有限公司 | Precision machining process of motor shaft |
| CN104493437A (en) * | 2014-11-25 | 2015-04-08 | 浙江铂达科技有限公司 | Oil pump shaft machining process |
| CN109048240A (en) * | 2018-08-10 | 2018-12-21 | 重庆迈通充磁机电设备有限责任公司 | A kind of automobile steering system high density tooth centre axis processing technique |
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2020
- 2020-05-03 CN CN202010368829.2A patent/CN111546000A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140093377A1 (en) * | 2012-10-02 | 2014-04-03 | General Electric Company | Extruded rotor, a steam turbine having an extruded rotor and a method for producing an extruded rotor |
| CN103722351A (en) * | 2013-12-04 | 2014-04-16 | 大连洁能重工机械有限公司 | Process for machining gear main shaft of high-power wind turbine generator set |
| CN104493437A (en) * | 2014-11-25 | 2015-04-08 | 浙江铂达科技有限公司 | Oil pump shaft machining process |
| CN104439996A (en) * | 2014-12-17 | 2015-03-25 | 常熟市华星精密铸件有限公司 | Precision machining process of motor shaft |
| CN109048240A (en) * | 2018-08-10 | 2018-12-21 | 重庆迈通充磁机电设备有限责任公司 | A kind of automobile steering system high density tooth centre axis processing technique |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118074388A (en) * | 2024-04-17 | 2024-05-24 | 苏州英磁新能源科技有限公司 | Anti-magnetic leakage rotor and preparation method thereof |
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Application publication date: 20200818 |