CN1544181A - Composite fabrication process for tooth blank of automobile gear shifting box combining tooth - Google Patents
Composite fabrication process for tooth blank of automobile gear shifting box combining tooth Download PDFInfo
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- CN1544181A CN1544181A CNA2003101062647A CN200310106264A CN1544181A CN 1544181 A CN1544181 A CN 1544181A CN A2003101062647 A CNA2003101062647 A CN A2003101062647A CN 200310106264 A CN200310106264 A CN 200310106264A CN 1544181 A CN1544181 A CN 1544181A
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Abstract
The invention is a compound making technique of automobile gear-box combined gear blanks, adopting finely forge-molding processing method. It heats the blank material to 1000-1200 deg.C, premolding the blank material on a hot mold forging press, after constant-temperature normalizing, eliminating oxide debris by impeller cleaning, and surface bonderizing and phosphatization, making cold-refining on tooth form, and finally making cone molding on the tooth by radial extruding method. It instantaneously completes hot mold forging premolding, refining, and cone molding on the press without cutting, saving material, saving labor, low-cost, high-efficiency, long-service life. The combined tooth root has no escrape, it has no stress concentration phenomenon and the tooth has high strength; the extrusion molding of the gear blank does not destroy metallic streamlines, it heightens the synthetic performance, the product quality is stable and can meet use and industrialized production requirements of top-grade autocars.
Description
Technical field
The present invention relates to a kind of produced with combination method of combining tooth blank for automobile gear box, belong to metalwork forging and pressing processing technique field.
Background technology
Car Change-speed Gear Box Binding Gear is used for the speed-change and gearshift of automobile, and is most important, and the processing request of its tooth base is very high.Traditional processing method generally has three kinds: the one, with the machine cut method tooth portion is shaped again after blank forged preform, and this method expense material of taking a lot of work, must there be escape at the place in conjunction with the tooth tooth root, and influence is in conjunction with tooth intensity; The 2nd, in conjunction with tooth position and main body separate machined, be pressed into cooperation with spline and be shaped, the expense of taking a lot of work equally material, precision also is difficult to guarantee; The 3rd, in conjunction with tooth position and main body separate machined, be shaped with electron beam welding, there is the stress concentration phenomenon.More than three kinds of methods have all that efficient is low, cost is high, product quality be cannot say for sure the defective demonstrate,proved, occurs when causing car gear shifting easily beating tooth and hangs serious consequence such as do not perform.In recent years, the someone proposes the processing method of precision forging, is about to blank substep on forcing press and is shaped, and profile of tooth need not machining, obviously than traditional diamond-making technique very much progress is arranged.But currently used finish forge preform operation is directly blank to be carried out cold forming on forcing press at normal temperatures, in the preform process, because the material deformation drag is big, causes die life very low, can not satisfy the industrialization production requirement.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art, provide a kind of efficient height, cost low, can enhance product performance, guarantee product quality again, can satisfy the combining tooth blank for automobile gear box produced with combination technology of industrialization production requirement.
Technical scheme of the present invention is: the processing method that combining tooth blank for automobile gear box is adopted precision forging, promptly earlier with blank preform on forcing press, on cold extrusion press, carry out the profile of tooth cold-finish again, adopting the radial compression method to carry out tooth portion back taper at last is shaped, improvements are that described preform is with more than the blank heating to 1000 ℃, carry out on hotdie forging press.
In the above-mentioned hot forging preform process, earlier with blank peeling base, with the heating in medium frequency stove blank is heated to 1000～1200 ℃ then after, three station shaping profiles of tooth of branch on hotdie forging press, shaping profile of tooth that promptly pier is thick---preform---.Again the tooth base of hot forging forming is carried out isothermal normalizing and handles, through the ball blast scale removal, carry out surperficial phospholeum processing again after, on cold extrusion press, carry out the profile of tooth cold-finish, adopt radial extruding die to carry out tooth portion back taper at last and be shaped.
Adopt technique scheme, do not need to carry out again machining, both saved material, save the machined expense again in conjunction with tooth tooth portion, hot forging preform, finishing, back taper all on forcing press moment finish, the efficient height, cost is low.To blank heating earlier, reduce the material drag in the preform, the forging die wearing and tearing are little, and the life-span is long, and precision can guarantee.Adopt processing method of the present invention, do not have escape, unstressed concentration phenomenon in conjunction with tooth tooth root portion, tooth portion intensity improves; Tooth base extrusion molding on precision die does not destroy metal streamline, and the material comprehensive mechanical performance increases, good product performance, and steady quality can satisfy the instructions for use of high-grade car, and can satisfy the industrialization production requirement.
The specific embodiment
Further specify embodiments of the invention below.
Embodiment 1: get the 20CrMo bar, with the sawed-off back of sawing machine peeling base on engine lathe, adopt the heating in medium frequency stove that blank is heated to 1050 ℃, divide three stations to be shaped on hotdie forging press: shaping profile of tooth that pier is thick---preform---.Then forge hot tooth base is carried out isothermal normalizing and handle, normalized treatment is carried out cold-finish at last after the ball blast scale removal carries out surperficial phospholeum processing again on cold extrusion press, and adopts radial extruding die to carry out the back taper shaping of tooth portion.
Embodiment 2: get the 20CrMnTi bar, sawed-off, peeling base is heated to 1150 ℃ in intermediate frequency furnace, and all the other manufacturing procedures are with example 1.
Claims (3)
1, a kind of combining tooth blank for automobile gear box produced with combination technology, adopt the processing method of precision forging, promptly earlier with blank preform on forcing press, on cold extrusion press, carry out the profile of tooth cold-finish again, adopting the radial compression method to carry out tooth portion back taper at last is shaped, it is characterized in that described preform is with more than the blank heating to 1000 ℃, carries out on hotdie forging press.
2, by the described combining tooth blank for automobile gear box produced with combination of claim 1 technology, it is characterized in that in the preform process, blank adopts intermediate frequency furnace to be heated to 1000～1200 ℃, divides three stations to be shaped on hotdie forging press: shaping profile of tooth that pier is thick---preform---.
3, by the described combining tooth blank for automobile gear box produced with combination of claim 2 technology, it is characterized in that before cold-finish, adopting isothermal normalizing to handle the tooth base of the profile of tooth that is shaped, through the ball blast scale removal, carry out surperficial phospholeum processing again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101062647A CN1544181A (en) | 2003-11-13 | 2003-11-13 | Composite fabrication process for tooth blank of automobile gear shifting box combining tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101062647A CN1544181A (en) | 2003-11-13 | 2003-11-13 | Composite fabrication process for tooth blank of automobile gear shifting box combining tooth |
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| Publication Number | Publication Date |
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| CN1544181A true CN1544181A (en) | 2004-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2003101062647A Pending CN1544181A (en) | 2003-11-13 | 2003-11-13 | Composite fabrication process for tooth blank of automobile gear shifting box combining tooth |
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| CN (1) | CN1544181A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396432C (en) * | 2004-11-12 | 2008-06-25 | 陈萌 | Maching process and mold for annulus of external gear reduced one-way device |
| CN100491004C (en) * | 2006-02-14 | 2009-05-27 | 江苏森威集团有限责任公司 | Precision forging process for radial and reverse combined extrusion |
| CN101590588B (en) * | 2008-05-29 | 2011-05-11 | 江苏威鹰机械有限公司 | Method for manufacturing mechanical drive chain wheel |
| CN102166610A (en) * | 2010-02-25 | 2011-08-31 | 蒋永宋 | Method for processing drive axle half-axle gear by hot forging |
| CN102248115A (en) * | 2011-06-16 | 2011-11-23 | 重庆创精温锻成型有限公司 | Method for forming and manufacturing hub precision forging member of vehicle transmission driving disc |
| CN102489978A (en) * | 2011-12-04 | 2012-06-13 | 北京机电研究所 | Hot and cold composite precision forging forming method of great-modulus high-thickness straight-tooth cylindrical gear |
| CN102688975A (en) * | 2012-05-15 | 2012-09-26 | 翟吉明 | Cutting-free gear manufacturing process |
| CN103157758A (en) * | 2011-12-09 | 2013-06-19 | 江苏威鹰机械有限公司 | Precision forging plastic forming process for inner gear ring in planetary reducer |
| CN104439955A (en) * | 2014-11-17 | 2015-03-25 | 江苏太平洋精锻科技股份有限公司 | Two-sided combination gear molding method |
| CN104589005A (en) * | 2015-01-15 | 2015-05-06 | 四川众友机械有限责任公司 | Molding process for straight bevel gear |
| CN104874718A (en) * | 2015-05-06 | 2015-09-02 | 柳州科尔特锻造机械有限公司 | Manufacturing process of straight bevel gear |
| CN105710620A (en) * | 2016-03-30 | 2016-06-29 | 江苏威鹰机械有限公司 | Manufacturing process for conjunction-tooth gear of car transmission |
| CN106826110A (en) * | 2016-12-29 | 2017-06-13 | 兴化市鑫翔机械有限公司 | A kind of cold Warm Extrusion preparation technology of winding drum output wheel frame plate |
| CN108817871A (en) * | 2018-07-11 | 2018-11-16 | 湖北汽车工业学院 | A kind of method of manufacturing technology of automobile VCR engine internal tooth tooth plate |
| CN113634707A (en) * | 2021-06-29 | 2021-11-12 | 中国航空工业标准件制造有限责任公司 | Preparation method of 302-material self-locking nut by hot heading forming |
-
2003
- 2003-11-13 CN CNA2003101062647A patent/CN1544181A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396432C (en) * | 2004-11-12 | 2008-06-25 | 陈萌 | Maching process and mold for annulus of external gear reduced one-way device |
| CN100491004C (en) * | 2006-02-14 | 2009-05-27 | 江苏森威集团有限责任公司 | Precision forging process for radial and reverse combined extrusion |
| CN101590588B (en) * | 2008-05-29 | 2011-05-11 | 江苏威鹰机械有限公司 | Method for manufacturing mechanical drive chain wheel |
| CN102166610A (en) * | 2010-02-25 | 2011-08-31 | 蒋永宋 | Method for processing drive axle half-axle gear by hot forging |
| CN102248115B (en) * | 2011-06-16 | 2013-03-27 | 重庆创精温锻成型有限公司 | Method for forming and manufacturing hub precision forging member of vehicle transmission driving disc |
| CN102248115A (en) * | 2011-06-16 | 2011-11-23 | 重庆创精温锻成型有限公司 | Method for forming and manufacturing hub precision forging member of vehicle transmission driving disc |
| CN102489978A (en) * | 2011-12-04 | 2012-06-13 | 北京机电研究所 | Hot and cold composite precision forging forming method of great-modulus high-thickness straight-tooth cylindrical gear |
| CN103157758A (en) * | 2011-12-09 | 2013-06-19 | 江苏威鹰机械有限公司 | Precision forging plastic forming process for inner gear ring in planetary reducer |
| CN102688975A (en) * | 2012-05-15 | 2012-09-26 | 翟吉明 | Cutting-free gear manufacturing process |
| CN104439955A (en) * | 2014-11-17 | 2015-03-25 | 江苏太平洋精锻科技股份有限公司 | Two-sided combination gear molding method |
| CN104589005A (en) * | 2015-01-15 | 2015-05-06 | 四川众友机械有限责任公司 | Molding process for straight bevel gear |
| CN104874718A (en) * | 2015-05-06 | 2015-09-02 | 柳州科尔特锻造机械有限公司 | Manufacturing process of straight bevel gear |
| CN105710620A (en) * | 2016-03-30 | 2016-06-29 | 江苏威鹰机械有限公司 | Manufacturing process for conjunction-tooth gear of car transmission |
| CN106826110A (en) * | 2016-12-29 | 2017-06-13 | 兴化市鑫翔机械有限公司 | A kind of cold Warm Extrusion preparation technology of winding drum output wheel frame plate |
| CN108817871A (en) * | 2018-07-11 | 2018-11-16 | 湖北汽车工业学院 | A kind of method of manufacturing technology of automobile VCR engine internal tooth tooth plate |
| CN108817871B (en) * | 2018-07-11 | 2020-04-17 | 湖北汽车工业学院 | Manufacturing process method of internal toothed plate of automobile VCR engine |
| CN113634707A (en) * | 2021-06-29 | 2021-11-12 | 中国航空工业标准件制造有限责任公司 | Preparation method of 302-material self-locking nut by hot heading forming |
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