CN114473093A - Gear machining method for motor gearbox - Google Patents
Gear machining method for motor gearbox Download PDFInfo
- Publication number
- CN114473093A CN114473093A CN202111655359.9A CN202111655359A CN114473093A CN 114473093 A CN114473093 A CN 114473093A CN 202111655359 A CN202111655359 A CN 202111655359A CN 114473093 A CN114473093 A CN 114473093A
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- CN
- China
- Prior art keywords
- gear
- processing
- tooth profile
- parameters
- quenching
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Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003754 machining Methods 0.000 title claims abstract description 14
- 238000010791 quenching Methods 0.000 claims abstract description 25
- 230000000171 quenching effect Effects 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 238000003672 processing method Methods 0.000 claims abstract description 11
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 7
- 238000005496 tempering Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
- B23H7/06—Control of the travel curve of the relative movement between electrode and workpiece
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
Abstract
The invention discloses a gear processing method for a motor gearbox, which comprises the following steps of firstly, carrying out quenching treatment on a gear raw material in a continuous mesh belt furnace quenching mode; then processing the gear raw material after quenching treatment into a gear plate; then, the gear plate is placed in an online cutting device for fixing and processing parameters are set; and finally, starting the linear cutting equipment to process the tooth profile according to the set parameters and the equipment processing requirements, and obtaining the required gear after the tooth profile is processed. The gear machining method for the motor gearbox is simple in process and high in machining efficiency, effectively achieves the machining process of the gear, and the machined gear is high in edge smoothness, strength, transmission resistance and noise and transmission flexibility.
Description
Technical Field
The invention relates to a gear processing method for a motor gearbox, and relates to the technical field of processing technologies of gearbox gears.
Background
Transmission gears often operate at high speeds, high loads, with alternating speeds and loads. The gear bears external load by depending on the structural size and the material strength, which requires the material to have higher strength, toughness and wear resistance; the gear is complex in shape, high in precision requirement and good in material manufacturability. Most of the prior gearbox gears adopt a die casting mode in the processing process, although the processing efficiency is high, the smoothness of the gear edge is poor, the strength of the gear is weak, and because the gear is small, the modulus of the gear is mostly below 0.5, a corresponding small grinding wheel is not used for grinding and polishing; in addition, a hobbing machine is adopted for manufacturing and processing, but during processing, the tool loss is large, the requirement on the hardness of the raw material of the gear is low, and most of the hardness is below 30; therefore, the gear machined by the method has the advantages of high noise, high friction coefficient, easiness in abrasion and increase in maintenance cost in the use process.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided is a gear processing method for a motor gearbox, which has a simple processing mode, can effectively improve the edge smoothness of a gear and improve the transmission effect of the gear.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a gear processing method for a motor gearbox comprises the following steps,
step one, quenching the gear raw material by adopting a continuous mesh belt furnace quenching mode;
step two, processing the gear raw material after quenching treatment into a gear plate;
step three, placing the gear plate in an online cutting device for fixing and setting processing parameters;
and step four, starting the linear cutting equipment to process the tooth profile according to the set parameters and the equipment processing requirements, and obtaining the required gear after the tooth profile is processed.
Preferably, in the first step, the quenching treatment process of the gear raw material comprises:
step a, firstly, carrying out high-temperature quenching on the raw material at the quenching temperature of 1020-;
b, rapidly cooling the raw material subjected to high-temperature quenching at the temperature of 50-80 ℃;
and c, tempering the cooled material at the tempering temperature of 540-.
Preferably, the model of the wire cutting equipment in the third step is sevice JA 400.
Preferably, in the process of setting parameters of the linear cutting equipment in the third step, programming parameters of three times of feed processing are set, and the setting of the processing parameters of each feed processing includes setting of parameters of pulse width, pulse spacing, power amplifier tube, wire speed, tracking and speed limit.
Preferably, in the fourth step, before performing the tooth profile machining, the molybdenum wire needs to be calibrated, and before setting the programming parameter, the molybdenum wire offset after the loss is calculated according to the diameter of the molybdenum wire measured after the loss.
Preferably, the calculation method of the molybdenum wire offset is as follows: the diameter of the new molybdenum wire is set to be 0.18mm, the offset of the new molybdenum wire is set to be 0.088mm, the diameter of the molybdenum wire after loss is set to be R1, the offset of the molybdenum wire after loss is set to be d, and the d is 0.088- [ (0.18-R1)/2] mm.
Preferably, in the fourth step, the tooth profile is processed in such a manner that half of the tooth profile of the gear is processed, then the processed tooth profile is fixed by a tool, and then the other half of the tooth profile is processed.
Compared with the prior art, the invention has the advantages that: the gear machining method for the motor gearbox is simple in process and high in machining efficiency, effectively achieves the machining process of the gear, and the machined gear is high in edge smoothness, strength, transmission resistance and noise and flexible in transmission, so that the practicability is high.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention:
a gear processing method for a motor gearbox comprises the following steps of firstly, processing a gear raw material
Quenching treatment is carried out by adopting a continuous mesh belt furnace quenching mode; in this embodiment, to obtain a gear having a desired hardness, the quenching process of the gear raw material includes: step a, firstly, carrying out high-temperature quenching on the raw material at the quenching temperature of 1020-; and b, rapidly cooling the raw material subjected to high-temperature quenching at the cooling temperature of 50-80 ℃. And c, tempering the cooled material at the tempering temperature of 540-. In the present example, the material hardness HRC36-40 obtained by using the above quenching treatment as the raw material 20Cr13 is used as an example, and meets the requirement of the gear strength. Step two, processing the gear raw material after quenching treatment into a gear plate;
step three, placing the gear plate in an online cutting device for fixing and setting processing parameters; in this embodiment, for convenience of operation and improvement of processing effect and efficiency, the model of the linear cutting device is sevice JA400, and in addition, in the parameter setting process, the programming parameters of three times of feed processing are set, and the parameter setting of each feed processing includes parameter settings of pulse width, pulse spacing, power amplifier tube, wire speed, tracking and speed limit, in this embodiment, specific preferred setting parameters are as shown in table 1 below,
| pulse width | Inter-pulse distance | Power amplifier tube | Speed of filament | Tracking | Speed limit | |
| First knife | 45 | 6 | 8 | 0 | 20 | 100 |
| Second knife | 5 | 8 | 4 | 2 | 1 | 100 |
| Third knife | 3 | 9 | 3 | 3 | 1 | 100 |
And step four, starting the linear cutting equipment to process the tooth profile according to the set parameters and the equipment processing requirements, and obtaining the required gear after the tooth profile is processed. Before actual processing, firstly, the gear plates are put in parallel, then a programmed zero point and a workpiece zero point are determined, and then drawing requirements and parameters can be installed for processing. The molybdenum wire offset is calculated in such a manner that, in practical use, the diameter of the new molybdenum wire is usually selected to be 0.18mm, and as summarized from the conventional processing data, the offset of the new molybdenum wire is 0.088mm, and in the calculation, if the diameter of the molybdenum wire after the loss is R1, the offset of the molybdenum wire after the loss is d, and d is 0.088- [ (0.18-R1)/2] mm, for example, if the measured diameter of the molybdenum wire after the loss is 0.16mm, the offset is 0.088- [ (0.18-0.16)/2] mm, and 0.078mm, and in practical use, the offset is set to satisfy 0.078mm0.078 ± 0.002. In addition, in order to facilitate the processing, the processing mode of the tooth profile is that half of the tooth profile of the gear is processed firstly, then the processed tooth profile is fixed by a tool, and then the other half of the tooth profile is processed. Thereby improving the machining efficiency and the gear machining effect.
The gear processed by the gear processing method for the motor gearbox has high structural strength, is suitable for the process of converting high-rotation-speed bottom torque into low-rotation-speed high-torque transmission, and has high edge smoothness, so that the transmission resistance is small, a pinion can also realize a high-performance and high-kinetic-energy transmission process, the noise in the power transmission process is small, and the transmission flexibility is high.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (7)
1. A gear machining method for a motor gearbox is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
step one, quenching the gear raw material by adopting a continuous mesh belt furnace quenching mode;
step two, processing the gear raw material after quenching treatment into a gear plate;
step three, placing the gear plate in an online cutting device for fixing and setting processing parameters;
and step four, starting the linear cutting equipment to process the tooth profile according to the set parameters and the equipment processing requirements, and obtaining the required gear after the tooth profile is processed.
2. The gear processing method for the motor transmission according to claim 1, wherein: in the first step, the quenching treatment process of the gear raw material comprises the following steps:
step a, firstly, carrying out high-temperature quenching on the raw material at the quenching temperature of 1020-;
b, rapidly cooling the raw material subjected to high-temperature quenching at the temperature of 50-80 ℃;
and c, tempering the cooled material at the tempering temperature of 540-.
3. The gear processing method for the motor transmission according to claim 1, wherein: the model of the linear cutting equipment in the third step is sevice JA 400.
4. The gear processing method for the motor transmission according to claim 1, wherein: and in the process of setting the parameters of the linear cutting equipment in the third step, programming parameters of three times of feed processing are set, and the setting of the feed processing parameters of each time comprises the setting of parameters of pulse width, pulse spacing, power amplifier tubes, wire speed, tracking and speed limit.
5. The method for machining the gear for the motor transmission according to claim 1, wherein: in the fourth step, before tooth profile machining, molybdenum wire calibration is needed, and before programming parameters are set, molybdenum wire offset after loss is calculated according to the diameter of the molybdenum wire measured after loss.
6. The gear processing method for the motor transmission according to claim 5, wherein: the calculation mode of the molybdenum wire offset is as follows: setting the diameter of the new molybdenum wire to be 0.18mm, the offset of the new molybdenum wire to be 0.088mm, and setting the diameter of the molybdenum wire after loss to be R1, the offset of the molybdenum wire after loss to be d, and then d =0.088- [ (0.18-R1)/2] mm.
7. The gear processing method for the motor transmission according to claim 1, wherein: in the fourth step, the processing mode of the tooth profile is that half of the tooth profile of the gear is processed firstly, then the processed tooth profile is fixed by a tool, and then the other half of the tooth profile is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111655359.9A CN114473093A (en) | 2021-12-30 | 2021-12-30 | Gear machining method for motor gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111655359.9A CN114473093A (en) | 2021-12-30 | 2021-12-30 | Gear machining method for motor gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114473093A true CN114473093A (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111655359.9A Pending CN114473093A (en) | 2021-12-30 | 2021-12-30 | Gear machining method for motor gearbox |
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| Country | Link |
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| CN (1) | CN114473093A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837165A (en) * | 2012-09-27 | 2012-12-26 | 常熟天地煤机装备有限公司 | Manufacturing method for final-stage driving gear of high-power coal mining machine |
| CN104439988A (en) * | 2013-09-17 | 2015-03-25 | 贵州群建精密机械有限公司 | Machining technology for gear made of 9Cr18 material |
| CN106670753A (en) * | 2016-10-14 | 2017-05-17 | 马鞍山市威马机械设备有限责任公司 | Machining method for toothed long cutter applicable to glasses cloth cutting |
| CN108581079A (en) * | 2018-05-28 | 2018-09-28 | 刘朝龙 | A kind of processing technology of linear cutter precision external tooth |
| CN110977365A (en) * | 2019-11-08 | 2020-04-10 | 北京卫星制造厂有限公司 | Method for precisely machining inner gear of ultrahigh-strength stainless steel large gear ring |
| CN110977366A (en) * | 2019-11-08 | 2020-04-10 | 北京卫星制造厂有限公司 | Method for precisely machining small-modulus internal gear of ultrahigh-strength stainless steel |
| CN111720521A (en) * | 2020-07-02 | 2020-09-29 | 泰尔重工股份有限公司 | Precise wear-resistant synchronous pulley and manufacturing method thereof |
| KR102339073B1 (en) * | 2021-01-05 | 2021-12-13 | 정혜숙 | Manufacturing Process and Products of Standard Metal Plate using Wire Cutting |
-
2021
- 2021-12-30 CN CN202111655359.9A patent/CN114473093A/en active Pending
Patent Citations (8)
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|---|---|---|---|---|
| CN102837165A (en) * | 2012-09-27 | 2012-12-26 | 常熟天地煤机装备有限公司 | Manufacturing method for final-stage driving gear of high-power coal mining machine |
| CN104439988A (en) * | 2013-09-17 | 2015-03-25 | 贵州群建精密机械有限公司 | Machining technology for gear made of 9Cr18 material |
| CN106670753A (en) * | 2016-10-14 | 2017-05-17 | 马鞍山市威马机械设备有限责任公司 | Machining method for toothed long cutter applicable to glasses cloth cutting |
| CN108581079A (en) * | 2018-05-28 | 2018-09-28 | 刘朝龙 | A kind of processing technology of linear cutter precision external tooth |
| CN110977365A (en) * | 2019-11-08 | 2020-04-10 | 北京卫星制造厂有限公司 | Method for precisely machining inner gear of ultrahigh-strength stainless steel large gear ring |
| CN110977366A (en) * | 2019-11-08 | 2020-04-10 | 北京卫星制造厂有限公司 | Method for precisely machining small-modulus internal gear of ultrahigh-strength stainless steel |
| CN111720521A (en) * | 2020-07-02 | 2020-09-29 | 泰尔重工股份有限公司 | Precise wear-resistant synchronous pulley and manufacturing method thereof |
| KR102339073B1 (en) * | 2021-01-05 | 2021-12-13 | 정혜숙 | Manufacturing Process and Products of Standard Metal Plate using Wire Cutting |
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