CN103286533B - Driving bevel gear axis for rear axle processing technology - Google Patents

Driving bevel gear axis for rear axle processing technology Download PDF

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Publication number
CN103286533B
CN103286533B CN201310203897.3A CN201310203897A CN103286533B CN 103286533 B CN103286533 B CN 103286533B CN 201310203897 A CN201310203897 A CN 201310203897A CN 103286533 B CN103286533 B CN 103286533B
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workpiece
carries
processing
blank
turning
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CN201310203897.3A
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CN103286533A (en
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熊利祥
刘洪�
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重庆市首业机械制造有限公司
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Abstract

The invention discloses a kind of driving bevel gear axis for rear axle processing technology, it is characterized in that comprising the steps: selection-forging and stamping blank-normalizing-turning-cutting-chamfering-annular knurl key-carburizing and quenching-tempering-shot-peening-alignment-annealing-fine turning outer circle-cutting thread-milling locking groove-cleaning screw thread-fine cylindrical-thick pairing-gear lapping-essence pairing-cleaning, workpiece is cleaned, thus obtains finished product.Adopt the technique of this life to improve the accuracy of manufacture of driving bevel gear axis for rear axle screw thread, reach H6 level machining accuracy; By Vehicle Processing after heat treatment, completely eliminated quench hardening carbon-coating, after annealing, reduce product surface and centre hardness, eliminate the internal pressure of gear, improve the portion's metallographic structure of the gear heart; Precision is high, reaches matching requirements better; Extend service life.

Description

Driving bevel gear axis for rear axle processing technology
Technical field
The present invention relates to a kind of technical field of vehicle, especially relate to a kind of driving bevel gear axis for rear axle processing technology.
Background technology
Traditional driving bevel gear axis for rear axle processing technology is such: selection-forging and stamping blank-normalizing-rough turn-finish turning-rolled thread-filament carding-roughing tooth-finishing tooth-chamfering-annular knurl key-quenching-tempering-shot-peening-alignment-reason screw thread-annealing-fine cylindrical-thick pairing-gear lapping-essence pairing-cleaning; Above processing technology can obtain the product of good quality to a certain extent, but it is excessively thick that existing processing technology exists interiors of products crystal grain, be out of shape larger after heat treatment, the not high deficiency of precision, thus have impact on the service life of driving bevel gear axis for rear axle greatly.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of precision high, be out of shape little driving bevel gear axis for rear axle processing technology.
Technical scheme of the present invention is as follows: a kind of driving bevel gear axis for rear axle processing technology, is characterized in that comprising the steps:
(1) selection, selects the low-carbon alloy steel bar meeting size;
(2) forge and press blank, by the heating materials chosen in step (1) to 850 ~ 1200 DEG C, then put into forging die and forge and press, thus obtain the blank closing symbol size;
(3) normalizing, blank is put into heating furnace and be heated to more than Ac3 30 ~ 50 DEG C, after insulation 30min, from stove, take out blank carry out air cooling at air, grain refinement and the distribution of carbides homogenising of blank is made after normalizing, remove the internal stress of material simultaneously, reduce the hardness of material, for the turning of next step provides condition;
(4) turning, is fixed on the blank after normalizing on lathe and carries out turnery processing, makes it meet the column structure of size, and this step can obtain the blank with workpiece configurations structure, is convenient to next step processing;
(5) cutting, is fixed to the blank that step (4) obtains on gear cutting machine and carries out cutting;
(6) chamfering, carries out chamfered to workpiece needing the place of chamfering;
(7) annular knurl key, carries out the process of annular knurl key to workpiece, thus obtains the workpiece meeting size;
(8) carburizing and quenching, the first step: by workpiece heat to 920 ~ 940 DEG C, quenches more than 10 hours;
Second step: diffusion quenching 90 ~ 120min, temperature is 910 ~ 930 DEG C;
3rd step: be incubated 45min at 830 ~ 850 DEG C of temperature; Make the surface of the work of infiltrate carbon obtain very high hardness after Carburization Treatment, improve its rub proofness;
(9) tempering, temperature 160 ~ 180 DEG C, is incubated 2 hours, reduces workpiece hardness and intensity, to improve its ductility or toughness;
(10) shot-peening, carries out bead to the workpiece after heat treatment, eliminates the surface stress of workpiece;
(11) alignment, carries out alignment process to the workpiece be out of shape after heat treatment, thus meets dimensional requirement;
(12) anneal, workpiece after alignment is joined 500 ~ 650 DEG C in dielectric heating oven, then workpiece is taken out cool to room temperature, after annealing, reduce workpiece hardness, improve machinability, eliminate residual stress, stable dimensions, reduces distortion and is inclined to crackle, simultaneously crystal grain thinning, adjustment tissue, eliminates tissue defects;
(13) fine turning outer circle, carries out finish turning processing, by Vehicle Processing after heat treatment by the cylindrical of the workpiece after the return of goods, completely eliminate quench hardening carbon-coating, reduced surface and the centre hardness of workpiece by annealing, eliminate internal stress, improve the metallographic structure in workpiece heart portion;
(14) cutting thread, according to drawing requirement to work pieces process screw thread, cutting thread after heat treatment, improves the accuracy of manufacture of screw thread, reaches H6 level machining accuracy;
(15) milling locking groove, according to requirement milling locking groove on workpiece of drawing;
(16) clear up screw thread, cleaning process is carried out to the screw thread after processing;
(17) fine cylindrical, carries out grinding to the cylindrical after turning, thus improves the machining accuracy of workpiece;
(18) slightly match;
(19) gear lapping, carries out gear lapping processing to workpiece, improves the cone tooth precision of driving bevel gear axis for rear axle;
(20) essence pairing;
(21) clean, workpiece is cleaned, thus obtains finished product.
As preferably: the turning in step (4) is divided into rough turn and finish turning, first carries out rough turn processing to blank, and then carries out finish turning processing.
As preferably: the cutting in step (5) is divided into roughing tooth and finishing tooth, first carries out roughing tooth processing to the workpiece after turning, and then carries out finishing tooth processing.
As preferably: the cutting thread in step (14) is divided into rough threading and finish turning screw thread, first carries out rough threading processing to blank, and then carries out finish turning screw thread process.
Beneficial effect of the present invention: the accuracy of manufacture that 1, improve driving bevel gear axis for rear axle screw thread, reaches H6 level machining accuracy; 2, by Vehicle Processing after heat treatment, completely eliminated quench hardening carbon-coating, after annealing, reduce product surface and centre hardness, eliminate the internal pressure of gear, improve the portion's metallographic structure of the gear heart; 3, precision is high, reaches matching requirements better; 4, service life is extended.
Accompanying drawing explanation
Fig. 1 is processing technology figure of the present invention.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Embodiment 1: refer to Fig. 1: shown a kind of driving bevel gear axis for rear axle processing technology, it comprises the steps:
(1) selection, selects the low-carbon alloy steel bar meeting size;
(2) forge and press blank, by the heating materials chosen in step (1) to 850 DEG C, then put into forging die and forge and press, thus obtain the blank closing symbol size;
(3) normalizing, puts into heating furnace by blank and is heated to Ac3+30 DEG C, after insulation 30min, takes out blank and carry out air cooling at air from stove;
(4) turning, is fixed on the blank after normalizing on lathe and carries out turnery processing, and make it meet the column structure of size, turning is divided into rough turn and finish turning, first carries out rough turn processing to blank, and then carries out finish turning processing.
(5) cutting, be fixed on gear cutting machine by the blank that step (4) obtains and carry out cutting, cutting is divided into roughing tooth and finishing tooth, first carries out roughing tooth processing to the workpiece after turning, and then carries out finishing tooth processing;
(6) chamfering, carries out chamfered to workpiece needing the place of chamfering;
(7) annular knurl key, carries out the process of annular knurl key to workpiece, thus obtains the workpiece meeting size;
(8) quench, the first step: by workpiece heat to 920 DEG C, quenches more than 10 hours;
Second step: diffusion quenching 90min, temperature is 910 DEG C;
3rd step: be incubated 45min at 830 DEG C of temperature;
(9) tempering, temperature 160 DEG C, is incubated 2 hours;
(10) shot-peening, carries out bead to the workpiece after heat treatment, eliminates the surface stress of workpiece;
(11) alignment, carries out alignment process to the workpiece be out of shape after heat treatment, thus meets dimensional requirement;
(12) anneal, the workpiece after alignment is joined 500 DEG C in dielectric heating oven, then workpiece is taken out cool to room temperature;
(13) fine turning outer circle, carries out finish turning processing by the cylindrical of the workpiece after the return of goods, removes sclerosis carbon-coating;
(14) cutting thread, according to drawing requirement to work pieces process screw thread, cutting thread is divided into rough threading and finish turning screw thread, first carries out rough threading processing to blank, and then carries out finish turning screw thread process;
(15) milling locking groove, according to requirement milling locking groove on workpiece of drawing;
(16) clear up screw thread, cleaning process is carried out to the screw thread after processing;
(17) fine cylindrical, carries out grinding to the cylindrical after turning;
(18) slightly match;
(19) gear lapping, carries out gear lapping processing to workpiece;
(20) essence pairing;
(21) clean, workpiece is cleaned, thus obtains finished product.
Embodiment 2: refer to Fig. 1: shown a kind of driving bevel gear axis for rear axle processing technology, it comprises the steps:
(1) selection, selects the low-carbon alloy steel bar meeting size;
(2) forge and press blank, by the heating materials chosen in step (1) to 1000 DEG C, then put into forging die and forge and press, thus obtain the blank closing symbol size;
(3) normalizing, puts into heating furnace by blank and is heated to Ac3+40 DEG C, after insulation 30min, takes out blank and carry out air cooling at air from stove;
(4) turning, is fixed on the blank after normalizing on lathe and carries out turnery processing, and make it meet the column structure of size, turning is divided into rough turn and finish turning, first carries out rough turn processing to blank, and then carries out finish turning processing.
(5) cutting, be fixed on gear cutting machine by the blank that step (4) obtains and carry out cutting, cutting is divided into roughing tooth and finishing tooth, first carries out roughing tooth processing to the workpiece after turning, and then carries out finishing tooth processing;
(6) chamfering, carries out chamfered to workpiece needing the place of chamfering;
(7) annular knurl key, carries out the process of annular knurl key to workpiece, thus obtains the workpiece meeting size;
(8) quench, the first step: by workpiece heat to 930 DEG C, quenches more than 10 hours;
Second step: diffusion quenching 110min, temperature is 920 DEG C;
3rd step: be incubated 45min at 840 DEG C of temperature;
(9) tempering, temperature 170 DEG C, is incubated 2 hours;
(10) shot-peening, carries out bead to the workpiece after heat treatment, eliminates the surface stress of workpiece;
(11) alignment, carries out alignment process to the workpiece be out of shape after heat treatment, thus meets dimensional requirement;
(12) anneal, the workpiece after alignment is joined 600 DEG C in dielectric heating oven, then workpiece is taken out cool to room temperature;
(13) fine turning outer circle, carries out finish turning processing by the cylindrical of the workpiece after the return of goods, removes sclerosis carbon-coating;
(14) cutting thread, according to drawing requirement to work pieces process screw thread, cutting thread is divided into rough threading and finish turning screw thread, first carries out rough threading processing to blank, and then carries out finish turning screw thread process;
(15) milling locking groove, according to requirement milling locking groove on workpiece of drawing;
(16) clear up screw thread, cleaning process is carried out to the screw thread after processing;
(17) fine cylindrical, carries out grinding to the cylindrical after turning;
(18) slightly match;
(19) gear lapping, carries out gear lapping processing to workpiece;
(20) essence pairing;
(21) clean, workpiece is cleaned, thus obtains finished product.
Embodiment 3: refer to Fig. 1: shown a kind of driving bevel gear axis for rear axle processing technology, it comprises the steps:
(1) selection, selects the low-carbon alloy steel bar meeting size;
(2) forge and press blank, by the heating materials chosen in step (1) to 1200 DEG C, then put into forging die and forge and press, thus obtain the blank closing symbol size;
(3) normalizing, puts into heating furnace by blank and is heated to Ac3+50 DEG C, after insulation 30min, takes out blank and carry out air cooling at air from stove;
(4) turning, is fixed on the blank after normalizing on lathe and carries out turnery processing, and make it meet the column structure of size, turning is divided into rough turn and finish turning, first carries out rough turn processing to blank, and then carries out finish turning processing.
(5) cutting, be fixed on gear cutting machine by the blank that step (4) obtains and carry out cutting, cutting is divided into roughing tooth and finishing tooth, first carries out roughing tooth processing to the workpiece after turning, and then carries out finishing tooth processing;
(6) chamfering, carries out chamfered to workpiece needing the place of chamfering;
(7) annular knurl key, carries out the process of annular knurl key to workpiece, thus obtains the workpiece meeting size;
(8) quench, the first step: by workpiece heat to 940 DEG C, quenches more than 10 hours;
Second step: diffusion quenching 120min, temperature is 930 DEG C;
3rd step: be incubated 45min at 850 DEG C of temperature;
(9) tempering, temperature 180 DEG C, is incubated 2 hours;
(10) shot-peening, carries out bead to the workpiece after heat treatment, eliminates the surface stress of workpiece;
(11) alignment, carries out alignment process to the workpiece be out of shape after heat treatment, thus meets dimensional requirement;
(12) anneal, the workpiece after alignment is joined 650 DEG C in dielectric heating oven, then workpiece is taken out cool to room temperature;
(13) fine turning outer circle, carries out finish turning processing by the cylindrical of the workpiece after the return of goods, removes sclerosis carbon-coating;
(14) cutting thread, according to drawing requirement to work pieces process screw thread, cutting thread is divided into rough threading and finish turning screw thread, first carries out rough threading processing to blank, and then carries out finish turning screw thread process;
(15) milling locking groove, according to requirement milling locking groove on workpiece of drawing;
(16) clear up screw thread, cleaning process is carried out to the screw thread after processing;
(17) fine cylindrical, carries out grinding to the cylindrical after turning;
(18) slightly match;
(19) gear lapping, carries out gear lapping processing to workpiece;
(20) essence pairing;
(21) clean, workpiece is cleaned, thus obtains finished product.

Claims (4)

1. a driving bevel gear axis for rear axle processing technology, is characterized in that comprising the steps:
(1) selection, selects the low-carbon alloy steel bar meeting size;
(2) forge and press blank, by the heating materials chosen in step (1) to 850 ~ 1200 DEG C, then put into forging die and forge and press, thus obtain the blank closing symbol size;
(3) normalizing, puts into heating furnace and is heated to more than Ac3 30 ~ 50 DEG C by blank, after insulation 30min, take out blank and carry out air cooling at air from stove;
(4) turning, is fixed on the blank after normalizing on lathe and carries out turnery processing, makes it meet the column structure of size, and this step can obtain the blank with workpiece configurations structure, is convenient to next step processing;
(5) cutting, is fixed to the blank that step (4) obtains on gear cutting machine and carries out cutting;
(6) chamfering, carries out chamfered to workpiece needing the place of chamfering;
(7) annular knurl key, carries out the process of annular knurl key to workpiece, thus obtains the workpiece meeting size;
(8) carburizing and quenching, the first step: by workpiece heat to 920 ~ 940 DEG C, quenches more than 10 hours;
Second step: diffusion quenching 90 ~ 120min, temperature is 910 ~ 930 DEG C;
3rd step: be incubated 45min at 830 ~ 850 DEG C of temperature;
(9) tempering, temperature 160 ~ 180 DEG C, is incubated 2 hours;
(10) shot-peening, carries out bead to the workpiece after heat treatment, eliminates the surface stress of workpiece;
(11) alignment, carries out alignment process to the workpiece be out of shape after heat treatment, thus meets dimensional requirement;
(12) anneal, the workpiece after alignment is joined 500 ~ 650 DEG C in dielectric heating oven, then workpiece is taken out cool to room temperature;
(13) fine turning outer circle, carries out finish turning processing by the cylindrical of the workpiece after annealing, removes sclerosis carbon-coating;
(14) cutting thread, according to drawing requirement to work pieces process screw thread;
(15) milling locking groove, according to requirement milling locking groove on workpiece of drawing;
(16) clear up screw thread, cleaning process is carried out to the screw thread after processing;
(17) fine cylindrical, carries out grinding to the cylindrical after turning;
(18) slightly match;
(19) gear lapping, carries out gear lapping processing to workpiece;
(20) essence pairing;
(21) clean, workpiece is cleaned, thus obtains finished product.
2. driving bevel gear axis for rear axle processing technology according to claim 1, is characterized in that: the turning in step (4) is divided into rough turn and finish turning, first carries out rough turn processing to blank, and then carries out finish turning processing.
3. driving bevel gear axis for rear axle processing technology according to claim 1, is characterized in that: the cutting in step (5) is divided into roughing tooth and finishing tooth, first carries out roughing tooth processing to the workpiece after turning, and then carries out finishing tooth processing.
4. driving bevel gear axis for rear axle processing technology according to claim 1, is characterized in that: the cutting thread in step (14) is divided into rough threading and finish turning screw thread, first carries out rough threading processing to blank, and then carries out finish turning screw thread process.
CN201310203897.3A 2013-05-28 2013-05-28 Driving bevel gear axis for rear axle processing technology CN103286533B (en)

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CN103753158B (en) * 2013-12-30 2016-08-17 四川江油中恒特钢有限公司 A kind of machining process of automobile axle driving gear
CN105081713B (en) * 2014-05-15 2017-10-17 重庆智展齿轮传动有限公司 The processing method of integral type bevel 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
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
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CN104633007A (en) * 2014-12-05 2015-05-20 广西柳工机械股份有限公司 High-strength main speed reducer spiral bevel gear pair of loader drive axle and machining process
CN104625665A (en) * 2014-12-30 2015-05-20 宁波职业技术学院 Alloy material and production process of gear
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CN106670752A (en) * 2016-12-30 2017-05-17 佛山职业技术学院 Numerically controlled turning machining technique for screw wheel
CN108188655A (en) * 2017-11-27 2018-06-22 江阴市永兴机械制造有限公司 A kind of helix bevel gear active tooth threading machining process
CN108115372A (en) * 2017-11-28 2018-06-05 江阴市永兴机械制造有限公司 A kind of processing method of spline gear shaft
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