CN102950437B - A kind of camshaft timing gear processing technique - Google Patents
A kind of camshaft timing gear processing technique Download PDFInfo
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- CN102950437B CN102950437B CN201210417733.6A CN201210417733A CN102950437B CN 102950437 B CN102950437 B CN 102950437B CN 201210417733 A CN201210417733 A CN 201210417733A CN 102950437 B CN102950437 B CN 102950437B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 238000005242 forging Methods 0.000 claims abstract description 8
- 238000007514 turning Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000011017 operating method Methods 0.000 claims abstract description 4
- 238000005256 carbonitriding Methods 0.000 claims description 8
- 230000008595 infiltration Effects 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Gears, Cams (AREA)
Abstract
The invention discloses a kind of camshaft timing gear processing technique, include following operating procedure: 1) to select material be the forging of 20CrMnTi, is put into by forging in normalizing furnace, controls temperature 900 DEG C-930 DEG C, heat time heating time 3h；2) select numerically controlled lathe, cutting tool choice carbide cutter tool, carry out big end a to 42 ± 0.2mm, small end b10.6+0.050mm, external diameter c to φ 175.60-0.02mm, groove d, endoporus e to the φ 23.5+0.20 mm of finish turning gear；3) select numerically controlled lathe, cutting tool choice carbide cutter tool, carry out finish turning gear another big end f to 40+0.050mm, small end g to 19.7+0.030mm, external diameter h to φ 175.60-0.02mm, groove j, endoporus e to φ 24.8+0.020mm；4) utilizing gear-hobbing machine to carry out gear hobbing, carry out shaving process after gear hobbing again, shaving precision reaches 6 class precisions；5) the gear work in-process after shaving is in the heart, gets out φ 30mm repeated hole i, six place φ 10.5mm through hole j, φ 6-0.02-0.03mm pin-and-hole k everywhere.The present invention is without axial thrust load in engagement process, and overlap coefficient is big, and serviceability is good, and noise is little, and bearing capacity is strong, and stable drive, efficiency are high, and bending strength is big.
Description
Technical field
The present invention relates to the mechanical processing technique of gear, particularly belong to a kind of camshaft timing gear processing technique.
Background technology
Timing gears be in machinery to complete relevant control function play time scale location gear.Air inlet system and exhaust system in internal combustion engine, the local system completing mechanical function and existing ordering relation is all introduced timing gears in clock and watch etc..This timing gears requirement on machining accuracy is significantly high, and current production technology cannot meet this required precision, under the premise not increasing manufacturing cost.
Summary of the invention
It is an object of the invention to provide a kind of camshaft timing gear processing technique, without axial thrust load in engagement process, overlap coefficient is big, and serviceability is good, and noise is little, and bearing capacity is strong, and stable drive, efficiency are high, and bending strength is big.
Technical scheme is as follows:
A kind of camshaft timing gear processing technique, includes following operating procedure:
1) select material be the forging of 20CrMnTi, forging is put in normalizing furnace, control temperature 900 DEG C-930 DEG C, heat time heating time 3h；
2) select numerically controlled lathe, cutting tool choice carbide cutter tool, carry out big end a to 42 ± 0.2mm, small end b10.6+0.050mm, external diameter c to φ 175.60-0.02mm, groove d, the endoporus e to φ 23.5+0.20mm of finish turning gear；
3) select numerically controlled lathe, cutting tool choice carbide cutter tool, carry out finish turning gear another big end f to 40+0.050mm, small end g to 19.7+0.030mm, external diameter h to φ 175.60-0.02mm, groove j, endoporus e to φ 24.8+0.020mm；
4) utilizing gear-hobbing machine to carry out gear hobbing, carry out shaving process after gear hobbing again, shaving precision reaches 6 class precisions；
5) the gear work in-process after shaving is in the heart, gets out φ 30mm repeated hole i, six place φ 10.5mm through hole j, φ 6-0.02-0.03mm pin-and-hole k everywhere；
6) in Yi Pusen industrial furnace, gear carrying out carbo-nitriding process, gear surface hardness 57～63HRC, core hardness 33～45HRC, infiltration layer 0.5～0.8mm, metallographic structure reaches 1-5 level；
7) gear after carbo-nitriding process heats to 650-760 DEG C, is incubated 5-6 hour, and stove is cooled to 280-320 DEG C, is incubated 3-5 hour, is again heated to 650-690 DEG C, is incubated 32 hours, is cooled to 400 DEG C with 40 DEG C/h, then with 18 DEG C/h, is cooled to 120 DEG C；Ream after heat treatment k to φ 6+0.0180mm again；
8) numeral-controlled internal grinder refines gear face g to 32.2+0.10mm, endoporus e to φ 25+0.020mm；
9) on surface grinding machine, end face b to 30+0.150mm is refined；
10) flaw detection, product inspection, cleaning rust-proof packaging, warehouse-in.
In Yi Pusen industrial furnace, gear carrying out carbo-nitriding process, gear surface hardness 60HRC, core hardness 39HRC, infiltration layer 0.6, metallographic structure reaches 3 grades.
The present invention had both saved the energy, improve again production efficiency, and the whole processing technique specification of gear blank, rationally, good quality of product is stable, and production cost reduces further.
Utilize the gear finished product that the inventive method produces as follows through laboratory detection result, hardness error≤15HBW is processed with stove diverse location part and Same Part diverse location, metallographic structure is be uniformly distributed tiny some globular carbide on ferrite matrix, the tensile strength 300Mpa of gear tooth, gear-driven overlap coefficient 1.1-1.4, the accuracy class of gear, in 5-6 level, fully meets actual operation requirements.
Accompanying drawing explanation
Fig. 1 is the manufacturing procedure process schematic of the present invention.
Detailed description of the invention
Referring to accompanying drawing, a kind of camshaft timing gear processing technique, include following operating procedure:
1) select material be the forging of 20CrMnTi, forging is put in normalizing furnace, control temperature 900 DEG C-930 DEG C, heat time heating time 3h；
2) select numerically controlled lathe, cutting tool choice carbide cutter tool, carry out big end a to 42 ± 0.2mm, small end b10.6+0.050mm, external diameter c to φ 175.60-0.02mm, groove d, the endoporus e to φ 23.5+0.20mm of finish turning gear；
3) select numerically controlled lathe, cutting tool choice carbide cutter tool, carry out finish turning gear another big end f to 40+0.050mm, small end g to 19.7+0.030mm, external diameter h to φ 175.60-0.02mm, groove j, endoporus e to φ 24.8+0.020mm；
4) utilizing gear-hobbing machine to carry out gear hobbing, carry out shaving process after gear hobbing again, shaving precision reaches 6 class precisions；
5) the gear work in-process after shaving is in the heart, gets out φ 30mm repeated hole i, six place φ 10.5mm through hole j, φ 6-0.02-0.03mm pin-and-hole k everywhere；
6) in Yi Pusen industrial furnace, gear carrying out carbo-nitriding process, gear surface hardness 60HRC, core hardness 39HRC, infiltration layer 0.6, metallographic structure reaches 3 grades；
7) gear after carbo-nitriding process heats to 650-760 DEG C, is incubated 5-6 hour, and stove is cooled to 280-320 DEG C, is incubated 3-5 hour, is again heated to 650-690 DEG C, is incubated 32 hours, is cooled to 400 DEG C with 40 DEG C/h, then with 18 DEG C/h, is cooled to 120 DEG C；Ream after heat treatment k to φ 6+0.0180mm again；
8) numeral-controlled internal grinder refines gear face g to 32.2+0.10mm, endoporus e to φ 25+0.020mm；
9) on surface grinding machine, end face b to 30+0.150mm is refined；
10) flaw detection, product inspection, cleaning rust-proof packaging, warehouse-in.
Claims (1)
1. a camshaft timing gear processing technique, it is characterised in that include following operating procedure:
1) select material be the forging of 20CrMnTi, forging is put in normalizing furnace, control temperature 900 DEG C-930 DEG C, heat time heating time 3h；
2) select numerically controlled lathe, cutting tool choice carbide cutter tool, carry out big end a to 42 ± 0.2mm, the small end of finish turning gearMm, external diameter c are extremelyGroove d, endoporus e are extremely
3) select numerically controlled lathe, cutting tool choice carbide cutter tool, carry out another big end f of finish turning gear extremelySmall end g is extremelyExternal diameter h is extremelyGroove j, endoporus e are extremely
4) utilizing gear-hobbing machine to carry out gear hobbing, carry out shaving process after gear hobbing again, shaving precision reaches 6 class precisions；
5) the gear work in-process after shaving in the heart, gets out everywhereRepeated hole i, six placesThrough hole j,Pin-and-hole k；
6) in Yi Pusen industrial furnace, gear carrying out carbo-nitriding process, gear surface hardness 57～63HRC, core hardness 33～45HRC, infiltration layer 0.5～0.8mm, metallographic structure reaches 1-5 level；
7) gear after carbo-nitriding process heats to 650-760 DEG C, is incubated 5-6 hour, and stove is cooled to 280-320 DEG C, is incubated 3-5 hour, is again heated to 650-690 DEG C, is incubated 32 hours, is cooled to 400 DEG C with 40 DEG C/h, then with 18 DEG C/h, is cooled to 120 DEG C；K ream again extremely after heat treatment
8) numeral-controlled internal grinder refines gear face g extremelyEndoporus e is extremely
9) on surface grinding machine, end face b is refined extremely
10) flaw detection, product inspection, cleaning rust-proof packaging, warehouse-in；
In Yi Pusen industrial furnace, gear carrying out carbo-nitriding process, gear surface hardness 60HRC, core hardness 39HRC, infiltration layer 0.6mm, metallographic structure reaches 3 grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417733.6A CN102950437B (en) | 2012-10-27 | 2012-10-27 | A kind of camshaft timing gear processing technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210417733.6A CN102950437B (en) | 2012-10-27 | 2012-10-27 | A kind of camshaft timing gear processing technique |
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| CN102950437A CN102950437A (en) | 2013-03-06 |
| CN102950437B true CN102950437B (en) | 2016-07-06 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170811B (en) * | 2013-03-31 | 2015-04-01 | 十堰市郧齿汽车零部件有限公司 | Manufacture method of crankshaft timing gear |
| CN103909390A (en) * | 2014-03-12 | 2014-07-09 | 苏州锻压厂有限责任公司 | Method for fabricating wind-driven generator gear |
| CN103921085A (en) * | 2014-04-09 | 2014-07-16 | 马鞍山市兴隆铸造有限公司 | Timing gear manufacturing technique |
| CN104057250A (en) * | 2014-06-04 | 2014-09-24 | 安徽省宁国顺昌机械有限公司 | Processing technology for guaranteeing assembling interchangeability of inner and outer rings of revolving support |
| CN104353975B (en) * | 2014-06-11 | 2016-06-29 | 哈尔滨汽轮机厂有限责任公司 | A kind of processing method nitrogenizing gear |
| CN105715769A (en) * | 2014-12-05 | 2016-06-29 | 富莱茵汽车部件有限公司 | Ignition timing gear assembly |
| CN105715766A (en) * | 2014-12-05 | 2016-06-29 | 富莱茵汽车部件有限公司 | Timing gear assembly of camshaft |
| CN107052728B (en) * | 2017-02-13 | 2018-10-30 | 江苏亿鑫齿轮制造有限公司 | A kind of manufacturing process applied to bevel gear shaft |
| CN107559405B (en) * | 2017-09-15 | 2019-07-19 | 中车戚墅堰机车车辆工艺研究所有限公司 | Gear and transmission mechanism |
| CN107366736B (en) * | 2017-09-19 | 2023-12-05 | 中车戚墅堰机车车辆工艺研究所有限公司 | Split type flexible gear and gear pair |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6066062A (en) * | 1997-11-12 | 2000-05-23 | Iveco Fiat S.P.A. | Gear change for automobile vehicle provided with auxiliary epicyclic gear train with helical gears including axially displaceable crown |
| CN1337287A (en) * | 2000-08-05 | 2002-02-27 | 郧阳汽车齿轮总厂 | Timing gear of diesel engine and processing technology thereof |
| CN201170306Y (en) * | 2008-03-06 | 2008-12-24 | 潍柴动力股份有限公司 | Diesel engine camshaft gear |
| CN201372826Y (en) * | 2009-03-20 | 2009-12-30 | 十堰市郧齿汽车零部件有限公司 | Timing gear of engine camshaft |
-
2012
- 2012-10-27 CN CN201210417733.6A patent/CN102950437B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6066062A (en) * | 1997-11-12 | 2000-05-23 | Iveco Fiat S.P.A. | Gear change for automobile vehicle provided with auxiliary epicyclic gear train with helical gears including axially displaceable crown |
| CN1337287A (en) * | 2000-08-05 | 2002-02-27 | 郧阳汽车齿轮总厂 | Timing gear of diesel engine and processing technology thereof |
| CN201170306Y (en) * | 2008-03-06 | 2008-12-24 | 潍柴动力股份有限公司 | Diesel engine camshaft gear |
| CN201372826Y (en) * | 2009-03-20 | 2009-12-30 | 十堰市郧齿汽车零部件有限公司 | Timing gear of engine camshaft |
Non-Patent Citations (2)
| Title |
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| 浅析某发动机起动齿轮加工工艺的改进方法;罗青;《机电产品开发与创新》;20101231;第23卷(第5期);正文154-156页 * |
| 齿轮加工工艺综述;王涛;《机械管理开发》;20111231(第6期);正文122页第1栏24行-第2栏31行 * |
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Denomination of invention: Processing process for timing gear of cam shaft Effective date of registration: 20170606 Granted publication date: 20160706 Pledgee: Qingyang Anhui rural commercial bank Limited by Share Ltd Pledgor: Fulaiyin Automobile Parts Co., Ltd. Registration number: 2017340000084 |
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Date of cancellation: 20180627 Granted publication date: 20160706 Pledgee: Qingyang Anhui rural commercial bank Limited by Share Ltd Pledgor: Fulaiyin Automobile Parts Co., Ltd. Registration number: 2017340000084 |
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Denomination of invention: Processing process for timing gear of cam shaft Effective date of registration: 20180706 Granted publication date: 20160706 Pledgee: Qingyang Anhui rural commercial bank Limited by Share Ltd Pledgor: Fulaiyin Automobile Parts Co., Ltd. Registration number: 2018340000289 |
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Date of cancellation: 20190110 Granted publication date: 20160706 Pledgee: Qingyang Anhui rural commercial bank Limited by Share Ltd Pledgor: Fulaiyin Automobile Parts Co., Ltd. Registration number: 2018340000289 |
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Denomination of invention: Processing process for timing gear of cam shaft Effective date of registration: 20190118 Granted publication date: 20160706 Pledgee: Qingyang Anhui rural commercial bank Limited by Share Ltd Pledgor: Fulaiyin Automobile Parts Co., Ltd. Registration number: 2019340000055 |
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Date of cancellation: 20200421 Granted publication date: 20160706 Pledgee: Qingyang Anhui rural commercial bank Limited by Share Ltd Pledgor: FULAIYIN AUTOMOBILE PARTS Co.,Ltd. Registration number: 2019340000055 |
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Denomination of invention: Processing process for timing gear of cam shaft Effective date of registration: 20200423 Granted publication date: 20160706 Pledgee: Qingyang Anhui rural commercial bank Limited by Share Ltd Pledgor: FULAIYIN AUTOMOBILE PARTS Co.,Ltd. Registration number: Y2020980001734 |
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