CN101773976B - Precision-forging anti-oxidization heating protective producing process of straight bevel gears of differentials - Google Patents
Precision-forging anti-oxidization heating protective producing process of straight bevel gears of differentials Download PDFInfo
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Abstract
The invention relates to a precision-forging anti-oxidization heating protective producing process of straight bevel gears of differentials, comprising the following steps of: (1) feeding; (2) preheating to 250 DEG C-300 DEG C for evaporating moisture in an antioxidant; (3) spraying the antioxidant to protect the surfaces; (4) medium-frequency heating to 900-950 DEG C; (5) sieving out material blocks with unqualified temperature; (6) feeding to a preforging die cavity; (7) lubricating a die and preforging for formation; (8) taking the materials and transferring to a precision forging die cavity; (9) lubricating a die and hot and precision forging for formation; (10) taking the materials and transferring to a material outlet slide way; (11) insulating workpieces in a slow cooling box and slowly cooling; (12) cutting forged flashes; (13) cleaning the surfaces and removing micro-oxidized skin of the surfaces; and (14) cold coining for forming precision-forging members. The invention has the advantages of automated production for avoiding artificial harsh environment, high production efficiency, stable process, material and energy saving, low production cost, stable forging precision and good forming quality, improves carrying capacity, prolongs the service life, enhances the working reliability and reduce transmission noise and shock, and can be widely applied to the process of manufacturing the straight bevel gears of the differentials.
Description
Technical field the present invention relates to a kind of differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process, can be widely used in the differential mechanism straight bevel gear manufacture process.
The existing differential mechanism straight bevel gear of background technology production technology, automaticity is low, and production environment is abominable, and production efficiency is low, and forging quality is poor, and forging forming is unstable, and uniformity is poor.
Summary of the invention the object of the present invention is to provide a kind of automated production, avoids artificial adverse circumstances, production efficiency is high, manufacturability is stable, material-saving, energy-conservation, production cost is low, forging precision is stable, forming quality is good, improve bearing capacity, increase the service life, strengthen functional reliability, the differential mechanism straight bevel gear precision forging that reduces rotational noise and vibrations hinders oxidization heating protective producing process.
In order to achieve the above object, differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention, its special character is:
(1) material loading;
(2) be preheating to 250 ℃～300 ℃, make the moisture in the workpiece ability rapid evaporation anti-oxidant;
(3) protection of vaporific pulse spraying anti-oxidant boron nitride is surperficial;
(4) heating in medium frequency to 900 ℃～950 ℃;
(5) temperature sorting screens out the defective material piece of temperature;
(6) expect the blocker chamber on the manipulator;
(7) mold lubrication and blocking are shaped;
(8) manipulator is got material and is transferred to the finish forge die cavity;
(9) mold lubrication and hot precision forging;
(10) manipulator is got material and is transferred to the discharging slideway;
(11) workpiece is incubated in slow cooling box and slow cooling;
(12) cut the forging overlap;
(13) surface micro oxide skin is removed in removing surface;
(14) cold-coining shaping finish forge spare.
Differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention; Its basic principle is: adopt segmentation heating, spray automation mode; Blank is through rolling-type automatic feed material mechanism; Send into Medium frequency induction preheating inductor and be heated to 250 ℃～300 ℃, directly import squirrel-cage pulse nebulization technique device coating protective film, utilize the accumulation of heat oven dry of blank and directly get into to be heated to 900 ℃～950 ℃ that forging needs in the warm forging induction heater; Automatically carry out the blank temperature sorting through infrared thermometer, screen out the defective material piece of temperature, temperature accept piece gets into next procedure; Puma manipulator folds up the material piece automatically: send into the shaping die cavity respectively by manipulator after the material piece is come out of the stove and be shaped and precision forging by two controlled fly press blockings, manipulator is got material and is put into the slow cooling hopper after forging; Controlled fly press expects automatically that by the program that is provided with in advance the thick finish forge of piece makes; Photoelectric control switch is controlled each operation automatically and is carried out work in order; Automatic spray apparatus is set, to the automatic coating protective film of material piece, and automatically mould spraying lubricant is lubricated and cools off by the parameter that is provided with in advance.
Differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention, said fly press can be electric screw press.
Differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention is not limited to electric screw press, also can be friction screw press, hydraulic screw press or clutch type screw press.
Differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention through coating protective film, utilizes metal in the scale-free heating process; The surface non-oxidation, the rapid forge precision form, the inherent quality surface quality reaches degree of precision; Profile accuracy is stable; Consistent size, stock utilization is high, and life of product is high.
Invention differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process; Be used for automatic precision forging differential mechanism straight bevel gear; Program by being provided with is in advance carried out automated production with manipulator clamping material base, and manufacture process and product quality are controlled easily, is convenient to produce in enormous quantities.
Differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention; Replace manually-operated with the automatic clamping material of manipulator piece; Solve the unsettled shortcoming of manually-operated work situation difference and technology, realized the automated production of precision forging differential mechanism straight bevel gear; Simultaneously, in the process of finish forge, manipulator can be grabbed again and is discharged to blocker die and carry out rough forge, grabs finish forge spare then to hopper, and action is compact like this, and production efficiency is high, gives full play to man-machine usefulness.
Differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention utilizes repeatedly precision forging of waste heat, has realized the shaping purpose of " once heating, three forgings "; Solved the problem of " once heating, once forging ", reduced twice heating, twice side cut operation, improved production efficiency than former technology; And having reduced the spillage of material that produces because of heating, material-saving has been saved a large amount of fuel; Energy-conservation, reduced production cost.
Differential mechanism straight bevel gear precision forging of the present invention resistance oxidization heating protective producing process, because of the fly press hitting power is stable, can default control, the equipment moving precision is high, therefore, and the gear forgings stable accuracy, high conformity, intensity and comprehensive mechanical performance are good.
Differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention, Forge Heating adopts and applies protection automatically, reaches the surface quality and the accuracy of gear of stablizing precision forging gear; Therefore, straight bevel gear precision forging quality is good, is used for differential mechanism and can improves bearing capacity; Increase the service life; Strengthen functional reliability, reduce rotational noise and vibrations, significant effect is arranged.
Differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention is compared with cut, and production efficiency and stock utilization all are significantly increased, energy-conservation, material-saving, and cost is low.But the single products material-saving is more than 16%～20%, and is energy-conservation 8%～10%, thereby the product direct cost can be reduced more than 80%, and economy and social benefit are considerable, have the market competitiveness.And work simplification, production efficiency improves, and cost reduces, invariable precision, mechanical performance obviously strengthens, and product significantly improves service life.
In sum, differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention, artificial adverse circumstances are avoided in automated production; Production efficiency is high, and manufacturability is stable, and material-saving is energy-conservation; Production cost is low, and forging precision is stable, and forming quality is good, improves bearing capacity; Increase the service life, strengthen functional reliability, reduce rotational noise and vibrations.
Description of drawings is done explanation further below in conjunction with accompanying drawing and embodiment to the present invention.
Fig. 1 is a process chart of the present invention.
The specific embodiment
In Fig. 1, differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process of the present invention, technological process is:
Material loading → be preheating to requires temperature; Make workpiece can rapid evaporation moisture → vaporific pulse spraying anti-oxidant boron nitride protection surface → heating in medium frequency in the anti-oxidant transfer to finish forge die cavity → mold lubrication and hot precision forging → manipulator and get material and transfer to discharging slideway → workpiece and in slow cooling box, be incubated also slow cooling → cut forging overlap → removing surface, removal surface micro oxide skin → cold-coining shaping finish forge spare to requiring temperature → temperature sorting to screen out to expect on the defective material piece → manipulator of temperature blocker chamber → mold lubrication and blocking shapings → manipulator to get material.
Embodiment 1:
(1) in the sketch in Fig. 11, material loading;
(2) in the sketch in Fig. 12, be preheating to 250 ℃, make the moisture in the workpiece ability rapid evaporation anti-oxidant;
(3) in the sketch in Fig. 13, vaporific pulse spraying anti-oxidant boron nitride protection surface;
(4) in the sketch in Fig. 14, heating in medium frequency to 900 ℃;
(5) in the sketch in Fig. 15, temperature sorting screens out the defective material piece of temperature;
(6) in the sketch in Fig. 16, expect the blocker chamber on the manipulator;
(7) in the sketch in Fig. 17, mold lubrication and blocking are shaped;
(8) in the sketch in Fig. 18, manipulator is got material and is transferred to the finish forge die cavity;
(9) in the sketch in Fig. 19, mold lubrication and hot precision forging;
(10) in the sketch in Fig. 1 10, manipulator is got material and is transferred to the discharging slideway;
(11) in the sketch in Fig. 1 11, workpiece is incubated in slow cooling box and slow cooling;
(12) in the sketch in Fig. 1 12, cut the forging overlap;
(13) in the sketch in Fig. 1 13, surface micro oxide skin is removed in removing surface;
(14) in the sketch in Fig. 1 14, cold-coining shaping finish forge spare.
Embodiment 2:
(1) in the sketch in Fig. 11, material loading;
(2) in the sketch in Fig. 12, be preheating to 300 ℃, make the moisture in the workpiece ability rapid evaporation anti-oxidant;
(3) in the sketch in Fig. 13, vaporific pulse spraying anti-oxidant boron nitride protection surface;
(4) in the sketch in Fig. 14, heating in medium frequency to 950 ℃;
(5) in the sketch in Fig. 15, temperature sorting screens out the defective material piece of temperature;
(6) in the sketch in Fig. 16, expect the blocker chamber on the manipulator;
(7) in the sketch in Fig. 17, mold lubrication and blocking are shaped;
(8) in the sketch in Fig. 18, manipulator is got material and is transferred to the finish forge die cavity;
(9) in the sketch in Fig. 19, mold lubrication and hot precision forging;
(10) in the sketch in Fig. 1 10, manipulator is got material and is transferred to the discharging slideway;
(11) in the sketch in Fig. 1 11, workpiece is incubated in slow cooling box and slow cooling;
(12) in the sketch in Fig. 1 12, cut the forging overlap;
(13) in the sketch in Fig. 1 13, surface micro oxide skin is removed in removing surface;
(14) in the sketch in Fig. 1 14, cold-coining shaping finish forge spare.
Embodiment 3:
(1) in the sketch in Fig. 11, material loading;
(2) in the sketch in Fig. 12, be preheating to 275 ℃, make the moisture in the workpiece ability rapid evaporation anti-oxidant;
(3) in the sketch in Fig. 13, vaporific pulse spraying anti-oxidant boron nitride protection surface;
(4) in the sketch in Fig. 14, heating in medium frequency to 925 ℃;
(5) in the sketch in Fig. 15, temperature sorting screens out the defective material piece of temperature;
(6) in the sketch in Fig. 16, expect the blocker chamber on the manipulator;
(7) in the sketch in Fig. 17, mold lubrication and blocking are shaped;
(8) in the sketch in Fig. 18, manipulator is got material and is transferred to the finish forge die cavity;
(9) in the sketch in Fig. 19, mold lubrication and hot precision forging;
(10) in the sketch in Fig. 1 10, manipulator is got material and is transferred to the discharging slideway;
(11) in the sketch in Fig. 1 11, workpiece is incubated in slow cooling box and slow cooling;
(12) in the sketch in Fig. 1 12, cut the forging overlap;
(13) in the sketch in Fig. 1 13, surface micro oxide skin is removed in removing surface;
(14) in the sketch in Fig. 1 14, cold-coining shaping finish forge spare.
Claims (3)
1. a differential mechanism straight bevel gear precision forging hinders oxidization heating protective producing process, it is characterized in that:
(1) material loading;
(2) be preheating to 250 ℃～300 ℃, make the moisture in the workpiece ability rapid evaporation anti-oxidant;
(3) protection of vaporific pulse spraying anti-oxidant boron nitride is surperficial;
(4) heating in medium frequency to 900 ℃～950 ℃;
(5) temperature sorting screens out the defective material piece of temperature;
(6) expect the blocker chamber on the manipulator;
(7) mold lubrication and blocking are shaped;
(8) manipulator is got material and is transferred to the finish forge die cavity;
(9) mold lubrication and hot precision forging;
(10) manipulator is got material and is transferred to the discharging slideway;
(11) workpiece is incubated in slow cooling box and slow cooling;
(12) cut the forging overlap;
(13) surface micro oxide skin is removed in removing surface;
(14) cold-coining shaping finish forge spare.
2. differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process according to claim 1 is characterized in that said preheat temperature is 275 ℃.
3. differential mechanism straight bevel gear precision forging resistance oxidization heating protective producing process according to claim 1 is characterized in that said heating in medium frequency temperature is 925 ℃.
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| CN200910231064A CN101773976B (en) | 2009-12-23 | 2009-12-23 | Precision-forging anti-oxidization heating protective producing process of straight bevel gears of differentials |
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| CN200910231064A CN101773976B (en) | 2009-12-23 | 2009-12-23 | Precision-forging anti-oxidization heating protective producing process of straight bevel gears of differentials |
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| CN101773976B true CN101773976B (en) | 2012-10-17 |
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| CN101966554B (en) * | 2010-10-18 | 2012-08-29 | 周祝道 | Method for manufacturing intermediate formed body of driven gear of rear axle of small and medium-sized automobile |
| CN102615229A (en) * | 2011-01-30 | 2012-08-01 | 江苏海达管件集团有限公司 | Intelligent precision forging die for pipe fittings |
| CN102240774B (en) * | 2011-06-02 | 2013-07-24 | 重庆创精温锻成型有限公司 | Fine forging forming method of spiral bevel gears |
| CN103495691B (en) * | 2013-08-08 | 2016-06-29 | 兴城市粉末冶金有限公司 | A kind of forging double-drive-axle triple gear anti-oxidation method |
| CN106180501A (en) * | 2015-04-29 | 2016-12-07 | 江苏昊鹏机械有限公司 | A kind of Forging Technology |
| CN107262657B (en) * | 2017-07-13 | 2020-05-15 | 安徽众鑫科技股份有限公司 | Cycloidal gear machining method |
| CN107470533B (en) * | 2017-08-24 | 2023-10-27 | 山东中兴汽车零部件有限公司 | Idler machining method and machining combined die |
| CN108607946A (en) * | 2018-04-17 | 2018-10-02 | 苏州大学张家港工业技术研究院 | A kind of big specification straight bevel gear study on precision forging technology |
| CN108672645B (en) * | 2018-05-04 | 2019-10-25 | 杭州前进锻造有限公司 | The band no-welding teeth portion one-step moulding method of tooth idle pulley conjunction gear |
| CN111889655A (en) * | 2020-06-18 | 2020-11-06 | 陈利强 | Preparation method of automobile hardware stamping part adopting cold and hot oxidation resistance technology |
| CN112404914A (en) * | 2020-10-29 | 2021-02-26 | 四川众友机械有限责任公司 | Forging processing technology of parking gear |
| CN112935175A (en) * | 2021-02-01 | 2021-06-11 | 昆山众诚精密锻造有限公司 | High-precision gear forging process for automobile air conditioner compressor |
| CN112833017A (en) * | 2021-03-22 | 2021-05-25 | 广东美芝精密制造有限公司 | Steel crankshaft manufacturing method, steel crankshaft and rotary compressor |
| CN114178466A (en) * | 2021-12-15 | 2022-03-15 | 江阴全华丰精锻有限公司 | Gear warm forging process |
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