CN102699638A - Method for manufacturing locomotive gearbox - Google Patents
Method for manufacturing locomotive gearbox Download PDFInfo
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- CN102699638A CN102699638A CN2012102195876A CN201210219587A CN102699638A CN 102699638 A CN102699638 A CN 102699638A CN 2012102195876 A CN2012102195876 A CN 2012102195876A CN 201210219587 A CN201210219587 A CN 201210219587A CN 102699638 A CN102699638 A CN 102699638A
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Abstract
The invention discloses a method for manufacturing a locomotive gearbox. The gearbox comprises an upper gearbox and a lower gearbox, wherein the upper gearbox and the lower gearbox are connected through a bolt. The method comprises the steps of: 1. forging and moulding; 2. normalizing for the first time; 3. normalizing for the second time; 4. roughly machining; 5. fine machining; 6. removing burrs to clean; 7. carburizing and quenching, 8. tempering at high temperature, 9. removing the burrs to clean for the second time, and 10. checking, wherein the upper gearbox is manufactured by adopting the method same as the method for manufacturing the lower gearbox. The carburizing steel can adopt the material of any one of 20CrMnTi, 20CrMnMo, 15CrNi6, 17Cr2Ni2A, 20CrNi2MoA, 17CrNiMo6 or 17Cr2Ni2MoA, or the material of any one of 42CrMoA or 34Cr2Ni2MoA.
Description
Technical field
The present invention relates to a kind of manufacturing approach of installing locomotive gear cases, particularly relate to a kind of manufacturing approach of wind-driven generator gear-box.
Background technology
Gear-box in the wind power generating set is an important mechanical part, and as the parts of transferring power, its main function is that the transmission of power that wind wheel is produced under wind is given generator and made it obtain corresponding rotating speeds.Usually the rotating speed of wind wheel is very low, does not far reach the desired rotating speed of generator for electricity generation, must be used for through the speedup of gear-box gear pair realizing, so also gear-box is referred to as gearbox.Because the wind-powered electricity generation unit all is installed in places, air port such as high mountain, wilderness, island usually; Receive the impact of the wind and the strong gusts of wind of irregular break-in varying duty, stand the influence of the scorching summer and freezing winter and the extreme temperature difference throughout the year, natural environment of living in is in addition had inconvenient traffic; Gear-box is installed in the small space of cat head; In case break down, repair very difficulty, so to its reliability with all proposed the requirement more much higher service life than common mechanical.For example, under conventional state, the mechanical performance, also should have characteristic such as cold-check resistance under the low-temperature condition to the requirement of construction material; The gear-box smooth working be should guarantee, vibration and impact prevented; Guarantee sufficient lubricating condition, or the like.
The gear-box of wind-driven generator bears dynamic and static load simultaneously at run duration.For satisfying reliability and life expectancy, its body structure adopts the fit of box-type up and down.But the gear-box of this fit still has weak point, promptly goes up the structure of lower box because the strength of materials is not enough, causes owing to temperature is too high in the course of the work damaging.Mostly this damage is that the wearing and tearing too early of gear teeth face, bearing cause.
Therefore, energy growing tension in modern times, wind-power electricity generation more and more is held in esteem and looks, and improves the stability and the life-span of wind power generating set, particularly gear-box, has become the heat subject of wind-power electricity generation research.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, employing carburizing steel is material, and makes gear-box through process meanses such as roughing, fining-off and twice quenchings, thereby improves the security and the service life of the gear-box that is used for wind-driven generator.
The manufacturing approach of installing locomotive gear cases disclosed by the invention comprises the steps:
This gear-box comprises upper gear box and lower tooth roller box, and said upper gear box is connected through bolt with the lower tooth roller box; The manufacturing approach of said lower tooth roller box all may further comprise the steps:
1. forging molding: employing carburizing steel is material, in electric furnace, said carburizing steel is forged upper gear box;
2. normalizing for the first time: under the temperature between 840 to 870 degrees centigrade, the lower tooth roller box is carried out normalized treatment, the normalized treatment time is 1 to 2 hour;
3. normalizing for the second time: the lower tooth roller box of normalized treatment carries out the normalized treatment second time to accomplishing for the first time under the temperature between 810 to 830 degrees centigrade, and the time is 1 hour;
4. roughing: adopt roughing milling cutter that said lower tooth roller box is carried out roughing;
5. fine finishining: after roughing, adopt the finish-milling cutter that said lower tooth roller box is carried out fine finishining, make the roughness of the lower tooth roller box after the processing be: Ra=3 μ m, flatness is: 0.05mm;
6. deburring is cleaned: the lower tooth roller box after the fine finishining is carried out deburring clean;
7. carburizing and quenching: under the temperature between 850 to 890 degrees centigrade, gear-box being carried out the Quenching Treatment cool time is 40 minutes, and quenching medium is water or oil;
8. high tempering: the lower tooth roller box that under 200 to 230 degrees centigrade temperature, quenching is finished carries out temper, and tempering time is for being 1 to 1.5 hour;
9. deburring is for the second time cleaned: adopt small tool to accomplishing the lower tooth roller box deburring of high tempering, clean then;
10: check: whether the lower tooth roller box to completion of processing is tested, to check this lower tooth roller box qualified;
Wherein, adopt the method the same to make upper gear box with the manufacturing approach of said lower tooth roller box.
Wherein, the material of said carburizing steel is: one of 20CrMnTi, 20CrMnMo, 15CrNi6,17Cr2Ni2A, 20CrNi2MoA, 17CrNiMo6 or 17Cr2Ni2MoA.
Perhaps, the material of wherein said carburizing steel is: one of 42CrMoA or 34Cr2Ni2MoA.
Wherein, adopt numerically controlled lathe to carry out the roughing of said step 4 and the fine finishining of said step 5, said numerically controlled lathe is preferably five numerically controlled lathes of planer-type.
Description of drawings
Fig. 1 makes the flow chart of gear-box for the present invention;
The specific embodiment
Introduce preferred implementation of the present invention below;
Embodiment 1:
The method that the present invention is used to make gear-box sees also Fig. 1, and wherein step S101 is the manufacturing process of lower tooth roller box to step S110, and step S201 is the manufacturing process of upper gear box to step S210;
As shown in Figure 1, in step 101, the lower tooth roller box is carried out forging molding: employing carburizing steel is material, in electric furnace, said carburizing steel is forged upper gear box; In the present invention; The carburizing of the prior art steel capital can be used for making gear-box of the present invention; The present invention does not do special qualification to this, what carburizing steel was selected for use in the present embodiment is: one of 20CrMnTi, 20CrMnMo, 15CrNi6,17Cr2Ni2A, 20CrNi2MoA, 17CrNiMo6 or 17Cr2Ni2MoA are any;
Step S102 is normalizing for the first time: under 850 degrees centigrade temperature, the lower tooth roller box is carried out normalized treatment, the normalized treatment time is 1 hour 40 minutes;
Step S103 is normalizing for the second time: the lower tooth roller box of normalized treatment carries out the normalized treatment second time to accomplishing for the first time under 815 degrees centigrade temperature, and the time is 1 hour; Wherein above-mentioned normalizing can be carried out in electric furnace.
Step S104 is roughing: adopt roughing milling cutter that said lower tooth roller box is carried out roughing; This processing preferentially selects for use Digit Control Machine Tool to carry out Milling Process: rough machined faying face adopts roughing milling cutter, and cutting speed is: 100-120m/min, cutting depth 1-3mm;
Step S105 is fine finishining: after roughing; Adopt the finish-milling cutter that said lower tooth roller box is carried out fine finishining, the same preferential numerically controlled lathe that adopts of fine finishining carries out, and through the finish-milling cutter lower tooth roller box is carried out Milling Process; Cutting speed is: 145-155m/min, cutting depth 0.1-0.3mm; Adopt DRY CUTTING, make the roughness of the lower tooth roller box after the processing be: Ra=3 μ m, flatness is: 0.05mm;
Step S106 is that deburring is cleaned: the lower tooth roller box after the fine finishining is carried out deburring clean;
Step S107 is a carburizing and quenching: under the temperature between 850 to 890 degrees centigrade, gear-box being carried out the Quenching Treatment cool time is 40 minutes, and quenching medium is water or oil;
Step S108 is a high tempering: the lower tooth roller box that under 200 to 230 degrees centigrade temperature, quenching is finished carries out temper, and tempering time is for being 1 to 1.5 hour;
Step S109 is that deburring is for the second time cleaned: adopt small tool to accomplishing the lower tooth roller box deburring of high tempering, clean then;
Step S110 is check: whether the lower tooth roller box to completion of processing is tested, to check this lower tooth roller box qualified;
When making the lower tooth roller box, adopt the method the same to make upper gear box with the manufacturing approach of lower tooth roller box, promptly like the step S201 of Fig. 1 to step S210;
After this, upper gear box and lower tooth roller box are assembled together to accomplish the manufacturing of gear-box.
Embodiment 2:
The same with the manufacturing process of embodiment 1, equally with reference to Fig. 1, in embodiment 2, step S101 is the manufacturing process of lower tooth roller box to step S110, and step S201 is the manufacturing process of upper gear box to step S210; Different with embodiment 1 is that the Fabrication parameter that embodiment 2 adopts is different from embodiment 1, introduces embodiment 2 below in detail:
In step 101, the lower tooth roller box is carried out forging molding: employing carburizing steel is material, in electric furnace, said carburizing steel is forged upper gear box; In the present invention; The carburizing of the prior art steel capital can be used for making gear-box of the present invention; Different with 20CrMnTi, 20CrMnMo, 15CrNi6,17Cr2Ni2A, 20CrNi2MoA, 17CrNiMo6 or 17Cr2Ni2MoA carburizing steel that embodiment 1 is adopted; In the present embodiment, in order further to improve the hardness on gear-box surface, the preferential carburizing steel that adopts of present embodiment is: one of 42CrMoA or 34Cr2Ni2MoA;
Step S102 is normalizing for the first time: under 870 degrees centigrade temperature, the lower tooth roller box is carried out normalized treatment, the normalized treatment time is 2 hours;
Step S103 is normalizing for the second time: the lower tooth roller box of normalized treatment carries out the normalized treatment second time to accomplishing for the first time under 830 degrees centigrade temperature, and the time is 1 hour; Wherein above-mentioned normalizing can be carried out in electric furnace.
Step S104 is roughing: adopt roughing milling cutter that said lower tooth roller box is carried out roughing; This processing preferentially selects for use Digit Control Machine Tool to carry out Milling Process, for example adopts five numerically controlled lathes of planer-type to process, and rough machined faying face adopts roughing milling cutter, and cutting speed is: 100m/min, cutting depth 2-3mm;
Step S105 is fine finishining: after roughing; Adopt the finish-milling cutter that said lower tooth roller box is carried out fine finishining; The same preferential numerically controlled lathe that adopts of fine finishining carries out, and for example five numerically controlled lathes of planer-type carry out Milling Process through the finish-milling cutter to the lower tooth roller box; Cutting speed is: 130-140m/min, cutting depth 0.1-0.2mm; Adopt DRY CUTTING, make the roughness of the lower tooth roller box after the processing be: Ra=2 μ m, flatness is: 0.05mm;
Step S106 is that deburring is cleaned: the lower tooth roller box after the fine finishining is carried out deburring clean;
Step S107 is a carburizing and quenching: under the temperature between 860 to 880 degrees centigrade, gear-box being carried out the Quenching Treatment cool time is 1 hour, and quenching medium is water or oil;
Step S108 is a high tempering: the lower tooth roller box that under 200 to 230 degrees centigrade temperature, quenching is finished carries out temper, and tempering time is for being 1.5 hours;
Step S109 is that deburring is for the second time cleaned: adopt small tool to accomplishing the lower tooth roller box deburring of high tempering, clean then;
Step S110 is check: whether the lower tooth roller box to completion of processing is tested, to check this lower tooth roller box qualified;
When making the lower tooth roller box, adopt the method the same to make upper gear box with the manufacturing approach of lower tooth roller box, promptly like the step S201 of Fig. 1 to step S210;
After this, upper gear box and lower tooth roller box are assembled together to accomplish the manufacturing of gear-box, the assembling of gear-box for example can adopt bolt to connect up and down.
The gear-box that adopts manufacturing approach of the present invention to make; Can obtain good intensity; For the environment for use of wind power generating motor, it not only can improve the service life of gear-box, and in the course of the work; Owing to improved the intensity and the toughness of gear-box, so its work stability and safety more.
The description that the present invention is detailed the manufacture process of wind power generating set with gear-box; But the foregoing description is not the qualification that is used for protection domain of the present invention; Those skilled in the art are under the situation that does not break away from protection domain of the present invention; Can make various modifications to the present invention, protection scope of the present invention is limited appended claim.
Claims (4)
1. the manufacturing approach of an installing locomotive gear cases, it is characterized in that: this gear-box comprises upper gear box and lower tooth roller box, said upper gear box is connected through bolt with the lower tooth roller box; The manufacturing approach of said lower tooth roller box all may further comprise the steps:
1. forging molding: employing carburizing steel is material, in electric furnace, said carburizing steel is forged upper gear box;
2. normalizing for the first time: under the temperature between 840 to 870 degrees centigrade, the lower tooth roller box is carried out normalized treatment, the normalized treatment time is 1 to 2 hour;
3. normalizing for the second time: the lower tooth roller box of normalized treatment carries out the normalized treatment second time to accomplishing for the first time under the temperature between 810 to 830 degrees centigrade, and the time is 1 hour;
4. roughing: adopt roughing milling cutter that said lower tooth roller box is carried out roughing;
5. fine finishining: after roughing, adopt the finish-milling cutter that said lower tooth roller box is carried out fine finishining, make the roughness of the lower tooth roller box after the processing be: Ra=3 μ m, flatness is: 0.05mm;
6. deburring is cleaned: the lower tooth roller box after the fine finishining is carried out deburring clean;
7. carburizing and quenching: under the temperature between 850 to 890 degrees centigrade, gear-box being carried out the Quenching Treatment cool time is 40 minutes, and quenching medium is water or oil;
8. high tempering: the lower tooth roller box that under 200 to 230 degrees centigrade temperature, quenching is finished carries out temper, and tempering time is for being 1 to 1.5 hour;
9. deburring is for the second time cleaned: adopt small tool to accomplishing the lower tooth roller box deburring of high tempering, clean then;
10: check: whether the lower tooth roller box to completion of processing is tested, to check this lower tooth roller box qualified;
Wherein, adopt the method the same to make upper gear box with the manufacturing approach of said lower tooth roller box.
2. the manufacturing approach of installing locomotive gear cases as claimed in claim 1, it is characterized in that: the material of said carburizing steel is: one of 20CrMnTi, 20CrMnMo, 15CrNi6,17Cr2Ni2A, 20CrNi2MoA, 17CrNiMo6 or 17Cr2Ni2MoA are any.
3. the manufacturing approach of installing locomotive gear cases as claimed in claim 1, it is characterized in that: the material of said carburizing steel is: one of 42CrMoA or 34Cr2Ni2MoA are any.
4. the manufacturing approach of installing locomotive gear cases as claimed in claim 1 is characterized in that: adopt numerically controlled lathe to carry out the roughing of said step 4 and the fine finishining of said step 5, said numerically controlled lathe is preferably five numerically controlled lathes of planer-type.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102195876A CN102699638A (en) | 2012-06-29 | 2012-06-29 | Method for manufacturing locomotive gearbox |
| CN201210332983.XA CN102941437B (en) | 2012-06-29 | 2012-09-11 | A kind of installing locomotive gear cases manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102195876A CN102699638A (en) | 2012-06-29 | 2012-06-29 | Method for manufacturing locomotive gearbox |
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| CN102699638A true CN102699638A (en) | 2012-10-03 |
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| CN2012102195876A Pending CN102699638A (en) | 2012-06-29 | 2012-06-29 | Method for manufacturing locomotive gearbox |
| CN201210332983.XA Active CN102941437B (en) | 2012-06-29 | 2012-09-11 | A kind of installing locomotive gear cases manufacture method |
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| CN201210332983.XA Active CN102941437B (en) | 2012-06-29 | 2012-09-11 | A kind of installing locomotive gear cases manufacture method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103909391A (en) * | 2014-03-12 | 2014-07-09 | 苏州锻压厂有限责任公司 | Method for fabricating high-speed rail train gear |
| CN104308468A (en) * | 2014-09-04 | 2015-01-28 | 重庆江增船舶重工有限公司 | High-speed gearbox processing method |
| CN105296732A (en) * | 2015-11-11 | 2016-02-03 | 芜湖天金机械有限公司 | Universal joint spherical shell quenching tempering process for improving metallurgical structure |
| CN105420475A (en) * | 2015-11-20 | 2016-03-23 | 芜湖天金机械有限公司 | Quench tempering technology for reducing treatment of starlike sleeve |
| CN106312478A (en) * | 2016-10-13 | 2017-01-11 | 南京创贝高速传动机械有限公司 | Gearbox for ship |
| CN111590273A (en) * | 2020-05-18 | 2020-08-28 | 博谷机械设备（昆山）有限公司 | Machining process of large gear box |
| CN113290349A (en) * | 2021-03-17 | 2021-08-24 | 无锡尚赛精密机械有限公司 | Preparation process of worm gear case shell |
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Family Cites Families (5)
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| JPH05186822A (en) * | 1992-01-13 | 1993-07-27 | Mazda Motor Corp | Manufacture of annular gear |
| CN100431774C (en) * | 2006-10-09 | 2008-11-12 | 无锡压缩机股份有限公司 | Making process of gear box casing for centrifugal compressor |
| CN100584517C (en) * | 2008-11-20 | 2010-01-27 | 重庆齿轮箱有限责任公司 | The processing technology of welded structure cement carbon quenching gear |
| CN101898297B (en) * | 2010-04-15 | 2011-09-07 | 南通振华重型装备制造有限公司 | Manufacturing method of large-size welding type carburizing and quenching gear |
| CN102398143A (en) * | 2011-10-24 | 2012-04-04 | 黄乃亨 | Manufacturing method of a gear box body |
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2012
- 2012-06-29 CN CN2012102195876A patent/CN102699638A/en active Pending
- 2012-09-11 CN CN201210332983.XA patent/CN102941437B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103909391A (en) * | 2014-03-12 | 2014-07-09 | 苏州锻压厂有限责任公司 | Method for fabricating high-speed rail train gear |
| CN104308468A (en) * | 2014-09-04 | 2015-01-28 | 重庆江增船舶重工有限公司 | High-speed gearbox processing method |
| CN104308468B (en) * | 2014-09-04 | 2017-02-15 | 重庆江增船舶重工有限公司 | High-speed gearbox processing method |
| CN105296732A (en) * | 2015-11-11 | 2016-02-03 | 芜湖天金机械有限公司 | Universal joint spherical shell quenching tempering process for improving metallurgical structure |
| CN105420475A (en) * | 2015-11-20 | 2016-03-23 | 芜湖天金机械有限公司 | Quench tempering technology for reducing treatment of starlike sleeve |
| CN106312478A (en) * | 2016-10-13 | 2017-01-11 | 南京创贝高速传动机械有限公司 | Gearbox for ship |
| CN111590273A (en) * | 2020-05-18 | 2020-08-28 | 博谷机械设备（昆山）有限公司 | Machining process of large gear box |
| CN113290349A (en) * | 2021-03-17 | 2021-08-24 | 无锡尚赛精密机械有限公司 | Preparation process of worm gear case shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102941437A (en) | 2013-02-27 |
| CN102941437B (en) | 2015-11-25 |
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Application publication date: 20121003 |