CN102501035A - Quenching and tempering method in tooth punching process of gear with medium-hard tooth surface - Google Patents

Quenching and tempering method in tooth punching process of gear with medium-hard tooth surface Download PDF

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Publication number
CN102501035A
CN102501035A CN2011103095438A CN201110309543A CN102501035A CN 102501035 A CN102501035 A CN 102501035A CN 2011103095438 A CN2011103095438 A CN 2011103095438A CN 201110309543 A CN201110309543 A CN 201110309543A CN 102501035 A CN102501035 A CN 102501035A
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CN
China
Prior art keywords
tooth
gear
quenching
heat treatment
hard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011103095438A
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Chinese (zh)
Inventor
胡文刚
杨孟云
孙茂青
聂启春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING JINXIN TRANSMISSION EQUIPMENT CO Ltd
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NANJING JINXIN TRANSMISSION EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NANJING JINXIN TRANSMISSION EQUIPMENT CO Ltd filed Critical NANJING JINXIN TRANSMISSION EQUIPMENT CO Ltd
Priority to CN2011103095438A priority Critical patent/CN102501035A/en
Publication of CN102501035A publication Critical patent/CN102501035A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a quenching and tempering method in tooth punching process of a gear with a medium-hard tooth surface. The method comprises the following steps of: machining of a gear blank: roughly turning and drilling the gear blank after forging and normalizing treatments; rough turning and heat treatment of a tooth shape: roughly hobbing the gear to form the tooth shape; releasing needed grinding amount according to a tooth thickness; then quenching and tempering at medium and high temperature, wherein the heating process of the quenching is under the protection of a carbon potential atmosphere; and carrying out shot blasting after the heat treatment; finish machining of the tooth shape: firstly, finely machining a tooth shape assembling standard of the gear by semi-finish turning and accurate grinding; and then finely machining the tooth shape of the gear by tooth grinding. The gear manufactured by the method disclosed by the invention has the advantages that the hardness of the tooth surface and the tooth root is improved, the hardness of the quenched and tempered tooth surface ranges from about HB340-370, thereby solving the problem that the medium-hard gear hobbing tool with tooth surface hardness higher than HB320 is difficult to machine. As a process of hobbing before the heat treatment is adopted in the method, the hobbing efficiency is greatly improved and the tool loss is reduced.

Description

The processing method that the tooth punching of a kind of middle hard gear-face gear is modified
Technical field
What the present invention relates to is a kind of gear working method, the processing method that the tooth punching of in particular a kind of middle hard gear-face gear is modified.
Background technology
Because the cutting hardness of hobboing cutter can only be processed the part below the HB320 usually.And the product that the has product of some imports especially, quenching and tempering hardness often reaches HB350 even higher, often is to adopt two kinds of methods to such part: a kind of be with in the quenching and tempering hardness people of hard gear for being reduced to below the HB320; Another kind makes gear into hardened face gear, improves intensity and precision.
These two kinds of methods all have weak point separately, and first method is to be that cost satisfies existing gear hobbing working ability to sacrifice a part of intensity, and the gear teeth face behind the finished product is inhomogeneous to tooth root hardness from tooth top, and this can reduce the service life of gear; Second kind then is that the material of gear has been used low-carbon alloy steel instead, has increased the carburizing and quenching Technology for Heating Processing, has increased very big cost.
Summary of the invention
Goal of the invention: the objective of the invention is to overcome the deficiency of prior art, provide the tooth punching of a kind of middle hard gear-face gear modified processing method, the tooth face hardness of hard gear is inhomogeneous in the solution, and tooth face hardness satisfies the processing of above lathe of HB350 and cutter.
Technical scheme: the present invention realizes through following technical scheme, the present invention includes following steps:
(1) the tooth base is processed: after the tooth base is forged normalized treatment, carry out rough turn and boring;
(2) profile of tooth roughing and heat treatment: thick gear hobbing processes profile of tooth, and transverse tooth thickness is emitted the mill amount that needs, and quenches then and middle high tempering, and the heating process of quenching is protected with carbon potential atmosphere, carries out bead after the heat treatment;
(3) profile of tooth fine finishining: at first the tooth-formation of gear reference for assembling is carried out fine finishining, through roll flute tooth-formation of gear is carried out fine finishining then through half finish turning and correct grinding.
Heat treatment may further comprise the steps in the said step (2):
(1) gear after the roughing is heated to 800~900 ℃ in carbon potential atmosphere, oil quenching;
(2) at 450~550 ℃ gear is carried out temper then.
Beneficial effect: the present invention compares prior art and has the following advantages: gear of the present invention is a common medium-carbon steel; The gear that uses method of the present invention to prepare has improved flank of tooth tooth root hardness; Tooth face hardness after the modifier treatment can reduce middle hard gear-face gear teeth portion spot corrosion situation greatly about HB340~370; Solved the problem that tooth face hardness is higher than the middle hardness gear gear hobbing cutter processing difficulties of HB320; Because the present invention adopts the preceding thick gear hobbing processing of heat, has improved gear hobbing effectiveness greatly, has reduced the cutter loss.
The specific embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
As shown in Figure 1, the middle hard gear-face gear that present embodiment need be processed is 42CrMoA; Modulus is m=14, and the number of teeth is z=65, and addendum coefficient is ha=1, the hand of spiral left, pressure angle α=20 °, helixangle=14 °, tip clearance coefficient C=0.25, overlap arc X=0.153, centre-to-centre spacing a=620mm.
Present embodiment may further comprise the steps:
(1) the tooth base is processed: after the tooth base is forged normalized treatment, carry out rough turn and boring;
Concrete rough turn and boring is as follows:
1) earlier rough turnly goes out each one, then in left datum level mint-mark;
2) the tooth base after rough turn carries out the ultrasonic examination inspection, guarantees not have the tooth base not have obvious defects;
3) on the center circle of no mint-mark face, hole then;
(2) profile of tooth roughing and heat treatment: thick gear hobbing processes profile of tooth, and transverse tooth thickness is emitted the suitable mill amount that needs, and heat-treats then, and heat treatment process comprises quenches and the processing of middle high tempering, and heating process is protected with carbon potential atmosphere, carries out bead after the heat treatment;
Thick agglomeration is drawn together:
1) at first with mint-mark face location, gear is carried out axial compression, the verification outside circle is beated, allowable error 0.05mm;
2) carry out thick gear hobbing then, deburring is carried out chamfering to the parts of tooth at tooth two ends again.
Heat treatment process may further comprise the steps:
1) gear after the roughing is heated to about 860 ℃ oil quenching in carbon potential atmosphere;
2) then the gear tempering 8 after 500 ℃ of left and right sides temperature are to oil quenching by 10 hours;
(3) profile of tooth fine finishining: tooth-formation of gear is carried out fine finishining through half finish turning, correct grinding and roll flute.
Half finish turning detailed process is following:
The car both ends of the surface are put the mill amount and are 0.1~0.2mm respectively, and the mill amount of putting of skiving tip circle is 0.4~0.5mm, and it is 0.4~0.5mm that the car endoporus is put the mill amount; And on datum level marking (that end face that gets off with endoporus one cutter car); Sharp edge is carried out abate.
Behind half finish turning hardness is checked that this moment, gear hardness can reach about HB350, integral hardness is even.
The correct grinding detailed process is following:
Grind both ends of the surface respectively to total thickness, roll flute tip circle and endoporus are to drawing requirement.
Roll flute may further comprise the steps:
1) with left datum end face location, end face fastens, and the verification endoporus is beated, and allowable error is 0.01mm, slightly finish grindes profile of tooth to drawing requirement;
2) by the standard correction of the flank shape, tooth root rounding off, tooth top rounding.
At last, the gear of moulding is carried out magnetic particle testing, demagnetization then, line cutting keyway meets the demands again, removes the burr of each one, and sharp rib abate is got final product.

Claims (2)

1. the modified processing method of middle hard gear-face gear tooth punching is characterized in that, may further comprise the steps:
(1) the tooth base is processed: after the tooth base is forged normalized treatment, carry out rough turn and boring;
(2) profile of tooth roughing and heat treatment: thick gear hobbing processes profile of tooth, and transverse tooth thickness is emitted the mill amount that needs, and quenches then and middle high tempering, and the heating process of quenching is protected with carbon potential atmosphere, carries out bead after the heat treatment;
(3) profile of tooth fine finishining: at first the tooth-formation of gear reference for assembling is carried out fine finishining, through roll flute tooth-formation of gear is carried out fine finishining then through half finish turning and correct grinding.
2. the processing method that a kind of middle hard gear-face gear according to claim 1 tooth punching is modified is characterized in that, heat treatment may further comprise the steps in the said step (2):
(1) gear after the roughing is heated to 800~900 ℃ in carbon potential atmosphere, oil quenching;
(2) at 450~550 ℃ gear is carried out temper then.
CN2011103095438A 2011-10-12 2011-10-12 Quenching and tempering method in tooth punching process of gear with medium-hard tooth surface Pending CN102501035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011103095438A CN102501035A (en) 2011-10-12 2011-10-12 Quenching and tempering method in tooth punching process of gear with medium-hard tooth surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011103095438A CN102501035A (en) 2011-10-12 2011-10-12 Quenching and tempering method in tooth punching process of gear with medium-hard tooth surface

Publications (1)

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Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102672440A (en) * 2012-04-28 2012-09-19 重庆市江津区宏盛机械制造有限公司 Light rail output bevel wheel machining process
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
CN103817501A (en) * 2014-02-24 2014-05-28 常州天山重工机械有限公司 Machining method of extra-large precision gear ring, gear ring and assembling method of gear ring
CN103831599A (en) * 2014-03-20 2014-06-04 重庆市坤津机械厂 Machining method for hardened face gear
CN103909389A (en) * 2014-03-12 2014-07-09 苏州锻压厂有限责任公司 Method for fabricating high speed train gear
CN104117830A (en) * 2014-07-24 2014-10-29 成都亨通兆业精密机械有限公司 Gear production technology facilitating gear surface quality and segregation degree
CN104128770A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production process beneficial to improving production efficiency and lowering segregation degree
CN104128765A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Production process facilitating optimization of gear surface quality and segregation degree
CN104128767A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production process beneficial to improving production efficiency and product quality
CN104128766A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production process adopting blank casting
CN104128759A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Lathe spindle machining process beneficial to spindle surface hardness
CN104128771A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production technology facilitating reduction of degree of segregation
CN104128757A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Lathe spindle machining technology facilitating surface hardenability depth
CN104128769A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production technology facilitating uniform composition distribution
CN104128762A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Lathe spindle machining technology facilitating machining efficiency and product quality
CN104128754A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Lathe spindle machining technology facilitating surface quality
CN104384851A (en) * 2014-10-11 2015-03-04 四川建设机械(集团)股份有限公司 High-strength structure steel tower crane fork and fork holder manufacturing process
CN104439992A (en) * 2014-11-19 2015-03-25 柳州科尔特锻造机械有限公司 Drive bevel gear machining method
CN104759859A (en) * 2015-03-19 2015-07-08 高灵军 Gear machining process
CN105081712A (en) * 2014-05-05 2015-11-25 江阴市永兴机械制造有限公司 Gear tempering processing method
CN105855815A (en) * 2016-05-27 2016-08-17 苏州威富达精密机械制造有限公司 Machining technology of large gear for transmission of crane
CN105855816A (en) * 2016-05-27 2016-08-17 苏州威富达精密机械制造有限公司 Machining technology of large gear for transmission
CN106002118A (en) * 2016-05-27 2016-10-12 苏州威富达精密机械制造有限公司 Intermediate gear machining process
CN106002117A (en) * 2016-05-27 2016-10-12 苏州威富达精密机械制造有限公司 Technology for processing eccentric type gear
CN106475753A (en) * 2016-12-21 2017-03-08 无锡易通精密机械股份有限公司 A kind of processing technology of bearing gear ring
CN109022740A (en) * 2018-07-20 2018-12-18 西安思匠德装备制造有限公司 A kind of creeper tread heat treatment method
CN109531080A (en) * 2018-10-23 2019-03-29 浙江吉智新能源汽车科技有限公司 A kind of automobile gearbox gear processing technology
CN110465706A (en) * 2019-07-10 2019-11-19 西安理工大学 Hardened face gear smart car technique and its skiving devising method of cutting tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1135778A1 (en) * 1983-09-27 1985-01-23 Московский автомобильный завод им.И.А.Лихачева Method for making heavy duty gears
JP2002309318A (en) * 2001-04-16 2002-10-23 Daido Steel Co Ltd Production method of gear
CN1908461A (en) * 2006-08-22 2007-02-07 南京高精齿轮集团有限公司 Hard tooth face sugar press used reducer and hard tooth face processing method
CN101200774A (en) * 2007-07-12 2008-06-18 桂林电子科技大学 Low-alloy bainite ductile iron oil quenching isothermal tempering heat treatment process
CN101713454A (en) * 2009-12-18 2010-05-26 吉林圆方机械集团有限公司 Method for manufacturing driving/driven spiral bevel gear of heavy-duty commercial vehicle by using copper-niobium high-strength austempered ductile iron
CN101804549A (en) * 2010-04-15 2010-08-18 南通振华重型装备制造有限公司 Processing and milling method of large-module crawling gear for ocean platform

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1135778A1 (en) * 1983-09-27 1985-01-23 Московский автомобильный завод им.И.А.Лихачева Method for making heavy duty gears
JP2002309318A (en) * 2001-04-16 2002-10-23 Daido Steel Co Ltd Production method of gear
CN1908461A (en) * 2006-08-22 2007-02-07 南京高精齿轮集团有限公司 Hard tooth face sugar press used reducer and hard tooth face processing method
CN101200774A (en) * 2007-07-12 2008-06-18 桂林电子科技大学 Low-alloy bainite ductile iron oil quenching isothermal tempering heat treatment process
CN101713454A (en) * 2009-12-18 2010-05-26 吉林圆方机械集团有限公司 Method for manufacturing driving/driven spiral bevel gear of heavy-duty commercial vehicle by using copper-niobium high-strength austempered ductile iron
CN101804549A (en) * 2010-04-15 2010-08-18 南通振华重型装备制造有限公司 Processing and milling method of large-module crawling gear for ocean platform

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102672440A (en) * 2012-04-28 2012-09-19 重庆市江津区宏盛机械制造有限公司 Light rail output bevel wheel machining process
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
CN103817501B (en) * 2014-02-24 2016-08-17 常州天山重工机械有限公司 The processing method of super large precision gear ring, made gear ring and the assembly method of gear ring
CN103817501A (en) * 2014-02-24 2014-05-28 常州天山重工机械有限公司 Machining method of extra-large precision gear ring, gear ring and assembling method of gear ring
CN103909389A (en) * 2014-03-12 2014-07-09 苏州锻压厂有限责任公司 Method for fabricating high speed train gear
CN103831599A (en) * 2014-03-20 2014-06-04 重庆市坤津机械厂 Machining method for hardened face gear
CN105081712A (en) * 2014-05-05 2015-11-25 江阴市永兴机械制造有限公司 Gear tempering processing method
CN104128765A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Production process facilitating optimization of gear surface quality and segregation degree
CN104128770A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production process beneficial to improving production efficiency and lowering segregation degree
CN104128766A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production process adopting blank casting
CN104128759A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Lathe spindle machining process beneficial to spindle surface hardness
CN104128771A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production technology facilitating reduction of degree of segregation
CN104128757A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Lathe spindle machining technology facilitating surface hardenability depth
CN104128769A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production technology facilitating uniform composition distribution
CN104117830A (en) * 2014-07-24 2014-10-29 成都亨通兆业精密机械有限公司 Gear production technology facilitating gear surface quality and segregation degree
CN104128754A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Lathe spindle machining technology facilitating surface quality
CN104128767A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Gear production process beneficial to improving production efficiency and product quality
CN104128762A (en) * 2014-07-24 2014-11-05 成都亨通兆业精密机械有限公司 Lathe spindle machining technology facilitating machining efficiency and product quality
CN104384851A (en) * 2014-10-11 2015-03-04 四川建设机械(集团)股份有限公司 High-strength structure steel tower crane fork and fork holder manufacturing process
CN104439992A (en) * 2014-11-19 2015-03-25 柳州科尔特锻造机械有限公司 Drive bevel gear machining method
CN104759859A (en) * 2015-03-19 2015-07-08 高灵军 Gear machining process
CN105855815A (en) * 2016-05-27 2016-08-17 苏州威富达精密机械制造有限公司 Machining technology of large gear for transmission of crane
CN105855816A (en) * 2016-05-27 2016-08-17 苏州威富达精密机械制造有限公司 Machining technology of large gear for transmission
CN106002118A (en) * 2016-05-27 2016-10-12 苏州威富达精密机械制造有限公司 Intermediate gear machining process
CN106002117A (en) * 2016-05-27 2016-10-12 苏州威富达精密机械制造有限公司 Technology for processing eccentric type gear
CN106475753A (en) * 2016-12-21 2017-03-08 无锡易通精密机械股份有限公司 A kind of processing technology of bearing gear ring
CN109022740A (en) * 2018-07-20 2018-12-18 西安思匠德装备制造有限公司 A kind of creeper tread heat treatment method
CN109531080A (en) * 2018-10-23 2019-03-29 浙江吉智新能源汽车科技有限公司 A kind of automobile gearbox gear processing technology
CN110465706A (en) * 2019-07-10 2019-11-19 西安理工大学 Hardened face gear smart car technique and its skiving devising method of cutting tool

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