CN102248115B - Method for forming and manufacturing hub precision forging member of vehicle transmission driving disc - Google Patents
Method for forming and manufacturing hub precision forging member of vehicle transmission driving disc Download PDFInfo
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- CN102248115B CN102248115B CN 201110162459 CN201110162459A CN102248115B CN 102248115 B CN102248115 B CN 102248115B CN 201110162459 CN201110162459 CN 201110162459 CN 201110162459 A CN201110162459 A CN 201110162459A CN 102248115 B CN102248115 B CN 102248115B
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- 238000005242 forging Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title abstract description 18
- 238000009966 trimming Methods 0.000 claims abstract description 16
- 238000000641 cold extrusion Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000002950 deficient Effects 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 5
- 238000007127 saponification reaction Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 4
- 239000002918 waste heat Substances 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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Abstract
The invention discloses a method for forming and manufacturing a hub precision forging member of a vehicle transmission driving disc. The method comprises the following steps of: preparing a material section according to process design requirements; heating the material section to 1,100-1,180 DEG C; then upsetting; carrying out forging pressing in a hot-forging die, hot correction on a pressing machine and hot trimming on the pressing machine, and drilling a middle through hole; carrying out thermal treatment on a blank to ensure that the rigidity of the blank reaches HB170-190; carrying out acid washing on the blank, removing defective blanks; carrying out cold extrusion processing on the blank; and machining according to the process requirements. In the manufacturing method, all devices are universal pressing machines, have less investment, and are convenient; the process course is stringent and has no obvious quality uncontrollable link; the die structure has a unique set in steps, the steps of upsetting (manufacturing the blank), hot forging, hot correction and hot trimming are completed in respective dies, and the die structure is convenient to manufacture and has low cost; and the hot correction is carried out by utilizing the blank waste heat after hot forging, therefore, the die life is beneficially prolonged.
Description
Technical field
The present invention relates to preparation method, especially the drive plate hub of automobile transmission fine forge piece its shaping process of the driving hub forging used in the vehicle transmission field.
Technical background
Drive plate hub of automobile transmission be the automobile transferring power must appliance, be an important power transmission member, it passes to power transmission shaft with the output speed in the speed changer and power (moment of torsion) by hub, so that automobile has enough power sources and steadily moves ahead.This structure that drives hub is shown in Fig. 2,3, at its external peripheral surface a plurality of driving cogs are arranged, but this driving cog has certain back taper angle (the A place among the figure), is difficult to withdrawing pattern when causing forging, and adopts conventional stripping means or structure can't realize its suitability for industrialized production; In addition, at external peripheral surface a plurality of driving cogs are arranged, all be to adopt tooth milling machine, sew with long stitches the gear form processing device such as tooth machine and process profile of tooth, efficient is low, stock utilization is low, cause its processing cost always higher, and its machining accuracy difficulty satisfy powerdriven needs, quality stability is relatively poor between the product of different batches.Blank before domestic relies on external import, and higher cost reaches long procurement cycle, can not adapt to the needs of the production of domestic automobile speed changer, maintenance etc.
Summary of the invention
The present invention is directed in the prior art driving cog on the drive plate hub of automobile transmission external peripheral surface adopts gear form processing device to process profile of tooth, the deficiencies such as the efficient that exists is low, stock utilization is low, processing cost is higher, machining accuracy is lower provide the drive plate hub of automobile transmission fine forge piece that cheaply forging and pressing mode of a kind of employing is produced, the forge die life-span is long, forging precision is high its shaping process.
Technical scheme of the present invention: drive plate hub of automobile transmission fine forge piece its shaping process is characterized in that comprising the steps:
(1) prepares raw material according to production engineering specifications, after raw material grinding skin, checking cracks through flaw detection, be sawn into the material section, remove undesirable material section;
(2) section of expecting is heated to 1100-1180 ℃;
(3) will the section of expecting pier on forcing press thick, obtain a circular blank;
(4) circular blank is placed in the hot forged mould, forges and presses at hotdie forging press; Then, blank is placed in the shape mould of hot school, carries out hot school shape at forcing press; Blank after the shape of hot school is placed in the hot trimming mould, carries out hot trimming at forcing press;
Final forging temperature in hot forged mould is controlled at more than 930 ℃, obtains having the blank of profile of tooth; After hot forging, followed by carrying out hot school shape and hot trimming;
(5) according to technological requirement, bore intermediate throughholes;
(6) blank is heat-treated, make its hardness reach HB170-190;
(7) blank is carried out pickling, remove the oxide skin on surface, will exist the blank of defective to remove; Qualified blank is carried out the alramenting saponification to be processed;
(8) in cold extrusion die, blank is carried out cold extrusion processing, make the profile of tooth moulding of blank;
(9) carry out machined according to technological requirement, certified products are the finish forge blank.
Manufacture method of the present invention has following features:
1, all devices is universal forcing press, small investment, convenience;
2, technical process is rigorous, without obvious quality link out of control;
3, clear process is convenient to sectional management;
4, the mould structure operation break-down has a cover of one's own, and pier thick (base), forge hot, hot school shape, hot trimming are all finished in the mould separately, are convenient to manufacturing and with low cost;
5, utilize the blank waste heat to carry out hot school shape after the forge hot, be conducive to promote die life;
6, the hub finish forge blank that manufactures by this technique fully alternative external import parts quality and greatly reduce the purchase cost of this part;
7, take cold temperature combination progressively to promote the precision that improves fine forge piece.
Description of drawings
Fig. 1 is process method flow chart of the present invention;
Fig. 2 is drive plate hub of automobile transmission structural front view of the present invention (analysing and observe);
Fig. 3 be Fig. 2 top view.
The specific embodiment
Drive plate hub of automobile transmission fine forge piece its shaping process of the present invention is characterized in that comprising the steps:
(1) prepares raw material according to production engineering specifications, after raw material grinding skin, checking cracks through flaw detection, be sawn into the material section, remove undesirable material section; Prior art is all adopted in grinding skin, defect detecting test etc., is not further described at this;
(2) section of expecting is heated to 1100-1180 ℃, specifically can in intermediate frequency furnace, heats;
(3) will the section of expecting pier on forcing press thick, obtain a circular blank;
(4) circular blank is placed in the hot forged mould, forges and presses at hotdie forging press; Then, blank is placed in the shape mould of hot school, carries out hot school shape at forcing press; Blank after the shape of hot school is placed in the hot trimming mould, carries out hot trimming at forcing press;
Final forging temperature general control in hot forged mould is advisable between 950 ℃-1050 ℃ more than 930 ℃, obtains having the blank of profile of tooth; After hot forging, followed by carrying out hot school shape and hot trimming, be under the uniform temperature condition at blank, utilize the waste heat of blank to carry out hot school shape and hot trimming, be conducive to improve the life-span of hot school shape and hot trimming mould, and the energy energy savings; Forge hot, hot school shape and hot trimming are once carrying out according to order after the heating;
(5) according to technological requirement, bore intermediate throughholes;
(6) blank is heat-treated, make its hardness reach HB170-190; Heat treated purpose is to reduce case hardness, eliminates stress, and be a kind of modifier treatment;
(7) blank is carried out pickling, remove the oxide skin on surface, the defective that blank may be existed comes out, and is convenient to exist the blank of defective to remove as defective work; Qualified blank is carried out the alramenting saponification to be processed; The acid that pickling is used is oxalic acid or watery hydrochloric acid etc., and the alramenting saponification is processed, and all adopts prior art, is not further described at this.
(8) in cold extrusion die, blank is carried out cold extrusion processing, make the profile of tooth moulding of blank; The cold-extruded pressure energy obtains higher dimensional accuracy, and working (machining) efficiency is high;
(9) carry out machined according to technological requirement, certified products are the finish forge blank.
In Fig. 1, a kind of concrete operation implementation step of the present invention is: will cut into through qualified ∮ 55 round steel of incoming test the material section of the needed size of technique and weight with horizontal automatic cutting machine, be heated to 1100-1180 ℃ through Medium Frequency Induction Heating Furnace by certain beat and temperature again, utilize the mould that is installed on the forcing press to realize from the manufacture process of pier thick (base), forge hot, hot school shape, hot trimming; Again with forging stock through subsequent handling (i.e. the surface treatment of boring, heat treatment, pickling descale, option, phosphatization saponification) thus after put into the cold extrusion die that is installed on the 500T hydraulic press and carry out cold extrusion and obtain the finish forge base; The finish forge base is machined with the numerical control bed by figure paper size and precision and to finish manufacturing.Whole manufacture process is reasonable, and quality control is tight.The stability that overall process all has corresponding monitoring and detection means to ensure the quality of products.
Claims (1)
1. drive plate hub of automobile transmission fine forge piece its shaping process is characterized in that comprising the steps:
(1) prepares raw material according to production engineering specifications, after raw material grinding skin, checking cracks through flaw detection, be sawn into the material section, remove undesirable material section;
(2) section of expecting is heated to 1100-1180 ℃;
(3) will the section of expecting pier on forcing press thick, obtain a circular blank;
(4) circular blank is placed in the hot forged mould, forges and presses at hotdie forging press; Then, blank is placed in the shape mould of hot school, carries out hot school shape at forcing press; Blank after the shape of hot school is placed in the hot trimming mould, carries out hot trimming at forcing press;
Final forging temperature in hot forged mould is controlled at more than 930 ℃, obtains having the blank of profile of tooth; After hot forging, followed by carrying out hot school shape and hot trimming;
(5) according to technological requirement, bore intermediate throughholes;
(6) blank is heat-treated, make its hardness reach HB170-190;
(7) blank is carried out pickling, remove the oxide skin on surface, will exist the blank of defective to remove; Qualified blank is carried out the alramenting saponification to be processed;
(8) in cold extrusion die, blank is carried out cold extrusion processing, make the profile of tooth moulding of blank;
(9) carry out machined according to technological requirement, certified products are the finish forge blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110162459 CN102248115B (en) | 2011-06-16 | 2011-06-16 | Method for forming and manufacturing hub precision forging member of vehicle transmission driving disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110162459 CN102248115B (en) | 2011-06-16 | 2011-06-16 | Method for forming and manufacturing hub precision forging member of vehicle transmission driving disc |
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| Publication Number | Publication Date |
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| CN102248115A CN102248115A (en) | 2011-11-23 |
| CN102248115B true CN102248115B (en) | 2013-03-27 |
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| CN 201110162459 Active CN102248115B (en) | 2011-06-16 | 2011-06-16 | Method for forming and manufacturing hub precision forging member of vehicle transmission driving disc |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071754A (en) * | 2013-01-18 | 2013-05-01 | 洛阳秦汉冷锻有限公司 | Cold forging process of high-strength skirt-type self-locking hexagonal screw cap |
| CN103586642B (en) * | 2013-11-20 | 2016-08-10 | 浙江万邦汽车动力系统有限公司 | Plate hub core manufacturing process |
| CN105855809B (en) * | 2016-05-31 | 2018-05-01 | 潍坊市高品机械制造有限公司 | A kind of flute profile disk processing technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544181A (en) * | 2003-11-13 | 2004-11-10 | 夏汉关 | Composite fabrication process for tooth blank of automobile gear shifting box combining tooth |
| US20050257590A1 (en) * | 2004-03-12 | 2005-11-24 | O-Oka Corporation | Gear and method and device for manufacturing the gear |
| CN101347887A (en) * | 2008-08-22 | 2009-01-21 | 常州精棱铸锻有限公司 | Method for producing upper gear tooth of steering arm shaft of automotive power steering gear |
| CN101773973A (en) * | 2010-03-15 | 2010-07-14 | 北京机电研究所 | Forming method of straight toothed spur gear compound forge with weight of 1-3 kilos, large diameter and large modulus |
| CN101804546A (en) * | 2010-03-22 | 2010-08-18 | 重庆创精温锻成型有限公司 | Method for manufacturing shifting gear of vehicle gear box |
| CN101913066A (en) * | 2010-09-09 | 2010-12-15 | 重庆创精温锻成型有限公司 | Method for manufacturing driven transmission gear of automobile automatic gearbox |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002282993A (en) * | 2001-03-28 | 2002-10-02 | Aichi Steel Works Ltd | Manufacturing method for gear with boss |
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2011
- 2011-06-16 CN CN 201110162459 patent/CN102248115B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544181A (en) * | 2003-11-13 | 2004-11-10 | 夏汉关 | Composite fabrication process for tooth blank of automobile gear shifting box combining tooth |
| US20050257590A1 (en) * | 2004-03-12 | 2005-11-24 | O-Oka Corporation | Gear and method and device for manufacturing the gear |
| CN101347887A (en) * | 2008-08-22 | 2009-01-21 | 常州精棱铸锻有限公司 | Method for producing upper gear tooth of steering arm shaft of automotive power steering gear |
| CN101773973A (en) * | 2010-03-15 | 2010-07-14 | 北京机电研究所 | Forming method of straight toothed spur gear compound forge with weight of 1-3 kilos, large diameter and large modulus |
| CN101804546A (en) * | 2010-03-22 | 2010-08-18 | 重庆创精温锻成型有限公司 | Method for manufacturing shifting gear of vehicle gear box |
| CN101913066A (en) * | 2010-09-09 | 2010-12-15 | 重庆创精温锻成型有限公司 | Method for manufacturing driven transmission gear of automobile automatic gearbox |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-282993A 2002.10.02 |
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| CN102248115A (en) | 2011-11-23 |
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