CN103846632A - Forging method for driving screw bevel gear forge piece of automotive rear axle - Google Patents
Forging method for driving screw bevel gear forge piece of automotive rear axle Download PDFInfo
- Publication number
- CN103846632A CN103846632A CN201410047499.1A CN201410047499A CN103846632A CN 103846632 A CN103846632 A CN 103846632A CN 201410047499 A CN201410047499 A CN 201410047499A CN 103846632 A CN103846632 A CN 103846632A
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- China
- Prior art keywords
- forging
- bevel gear
- spiral bevel
- heated
- driving screw
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Abstract
The invention discloses a forging method for a driving screw bevel gear forge piece of an automotive rear axle. The forging method comprises the following steps that a, a rod-like blank is poured; b, forging is carried out, (1) in the temperature range of 1200 DEG C -950 DEG C, roll forging blank making is performed and (2) finish forging and forming are performed: a roll forging piece is put in a finish forging forming mold consisting of a concave mold, a convex mold, a cover mold and a mandrel, and under the pressure effect of the convex mold, the blank downwards forms along the inner wall of the cover mold through accumulating; the blank is ejected by the mandrel after de-molding, and the obtained forge piece is the driving screw bevel gear forge piece of the automotive rear axle; c, thermal treatment, the driving screw bevel gear after undergoing the forging process in the step b is heated to 1080 DEG C and subjected to heat insulation for 1-2 h, the bevel gear is subjected to oil cooling to reach the temperature of being less than or equal to 100 DEG C and is then heated again to the temperature range of 680 DEG C to 750 DEG C and is subjected to heat insulation for 1-2 h, and then water cooling is carried out; after annealing treatment, the driving screw bevel gear is heated to 320-380 DEG C and is subjected to heat insulation for 4-5 h, and then the atomization cooling treatment is carried out. With the forging method, the driving screw bevel gear forge piece is suitable for large batch industrial production, the phenomena of containing impurities and insufficient filling in the forging process are reduced, the mechanical performance of products is further improved, the material consumption is saved, and the mold life of the products is prolonged.
Description
Technical field
The present invention relates to a kind of forging forged piece of automobile rear axle driving spiral bevel gear method.
Background technology
Initiatively spiral bevel gear is the direct actuator of vehicle wheel rotation, is a strength member of automobile transmitting torque.
When motor racing, the moment of torsion of engine output, pass to initiatively spiral bevel gear through multi-change speed, be delivered on wheel by active spiral bevel gear again, propelling vehicle advances or pours into, therefore, initiatively spiral bevel gear in the time of work, have withstand shocks, the effect of alternating bending fatigue load and torsion, so just require initiatively spiral bevel gear to there is enough iron bending strengths, shearing strength and toughness preferably.
At present, utilize pendulum mill to produce initiatively spiral bevel gear flange casting technique and mostly be secondary ignition technique, initiatively spiral bevel gear blank heat for the first time after with the equipment such as open die forging or hydraulic press base, the base time is longer, workpiece rapid heat dissipation when base, cause the temperature after blank heats to be for the first time down to 600 ℃ of left and right through heat radiation, blank plasticity reduces, can not meet pendulum and grind technological requirement, therefore need the half-shaft blank to adding for the first time after thermal deformation to heat for the second time, can not meet pendulum and grind technological requirement, because need to heat for the second time the half-shaft blank adding for the first time after thermal deformation.
This technique exists the problems such as forging oxide skin is large, and forging surface quality is poor, and production cost is high, and production efficiency is low.
Summary of the invention
The object of this invention is to provide a kind of forging forged piece of automobile rear axle driving spiral bevel gear method, make it be beneficial to large batch of industrialized production, and the phenomenon that has reduced appearance folder dirt in forging process, has been not fully filled, the mechanical property of product is further improved, save product materials, improved the die life of product.
Technical scheme of the present invention is as follows:
A kind of forging forged piece of automobile rear axle driving spiral bevel gear method, comprises the following steps:
A, pour into a mould bar-shaped blank;
B, forging step
(1) in the temperature range of 1200 ℃-950 ℃, roller forging sheet stamping (2) finish forging: roll forging part is put into the finish forging mould being made up of die, punch, cover die and push rod, under punch pressure-acting, blank is along the poly-material moulding downwards of cover die inwall; After the demoulding, eject through push rod, the forging obtaining is initiatively spiral bevel gear forging of automobile axle;
C, heat treatment
Active spiral bevel gear after step b forges is heated to 1080 ℃ and be incubated 1-2h, and oil cooling is to higher than reheating after 100 ℃ to the temperature range of 680 ℃-750 ℃ and being incubated 1-2h, water-cooled afterwards; After temper, then active spiral bevel gear is heated to 320-380 ℃, insulation 4-5 hour, the cooling processing of then spraying;
D, by the workpiece Shot Blasting after heat treatment;
E, by the piece packaging of Shot Blasting.
Described active spiral bevel gear after step b forges is heated to 1080 ℃ and be incubated 1.5h, oil cooling is to higher than reheating after 100 ℃ to the temperature range of 700 ℃ and being incubated 1.5h, water-cooled afterwards; After temper, then active spiral bevel gear is heated to 350 ℃, is incubated 4.5 hours, the cooling processing of then spraying.
The present invention makes it be beneficial to large batch of industrialized production, and the phenomenon that has reduced appearance folder dirt in forging process, has been not fully filled, and the mechanical property of product is further improved, and has saved product materials, has improved the die life of product.
It is as follows that mechanical property of the present invention detects data:
Tensile strength sigma b (MPa): >=1000
Yield strength σ s (MPa): >=900
Percentage elongation δ 5 (%): >=12
Contraction percentage of area ψ (%): >=50
Impact energy Ak v (J): >=60
Notched bar impact strength α kv (J/cm2): >=78
Hardness :≤223HB.
The specific embodiment
A kind of forging forged piece of automobile rear axle driving spiral bevel gear method, comprises the following steps:
A, pour into a mould bar-shaped blank;
B, forging step
(1) in the temperature range of 1200 ℃-950 ℃, roller forging sheet stamping (2) finish forging: roll forging part is put into the finish forging mould being made up of die, punch, cover die and push rod, under punch pressure-acting, blank is along the poly-material moulding downwards of cover die inwall; After the demoulding, eject through push rod, the forging obtaining is initiatively spiral bevel gear forging of automobile axle;
C, heat treatment
Active spiral bevel gear after step b forges is heated to 1080 ℃ and be incubated 1-2h, and oil cooling is to higher than reheating after 100 ℃ to the temperature range of 680 ℃-750 ℃ and being incubated 1-2h, water-cooled afterwards; After temper, then active spiral bevel gear is heated to 320-380 ℃, insulation 4-5 hour, the cooling processing of then spraying;
D, by the workpiece Shot Blasting after heat treatment;
E, by the piece packaging of Shot Blasting.
Described active spiral bevel gear after step b forges is heated to 1080 ℃ and be incubated 1.5h, oil cooling is to higher than reheating after 100 ℃ to the temperature range of 700 ℃ and being incubated 1.5h, water-cooled afterwards; After temper, then active spiral bevel gear is heated to 350 ℃, is incubated 4.5 hours, the cooling processing of then spraying.
Claims (2)
1. a forging forged piece of automobile rear axle driving spiral bevel gear method, is characterized in that, comprises the following steps:
A, pour into a mould bar-shaped blank;
B, forging step
(1) in the temperature range of 1200 ℃-950 ℃, roller forging sheet stamping (2) finish forging: roll forging part is put into the finish forging mould being made up of die, punch, cover die and push rod, under punch pressure-acting, blank is along the poly-material moulding downwards of cover die inwall; After the demoulding, eject through push rod, the forging obtaining is initiatively spiral bevel gear forging of automobile axle;
C, heat treatment
Active spiral bevel gear after step b forges is heated to 1080 ℃ and be incubated 1-2h, and oil cooling is to higher than reheating after 100 ℃ to the temperature range of 680 ℃-750 ℃ and being incubated 1-2h, water-cooled afterwards; After temper, then active spiral bevel gear is heated to 320-380 ℃, insulation 4-5 hour, the cooling processing of then spraying;
D, by the workpiece Shot Blasting after heat treatment;
E, by the piece packaging of Shot Blasting.
2. forging forged piece of automobile rear axle driving spiral bevel gear method according to claim 1, it is characterized in that, described active spiral bevel gear after step b forges is heated to 1080 ℃ and be incubated 1.5h, oil cooling is to higher than reheating after 100 ℃ to the temperature range of 700 ℃ and being incubated 1.5h, water-cooled afterwards; After temper, then active spiral bevel gear is heated to 350 ℃, is incubated 4.5 hours, the cooling processing of then spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410047499.1A CN103846632A (en) | 2014-02-11 | 2014-02-11 | Forging method for driving screw bevel gear forge piece of automotive rear axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410047499.1A CN103846632A (en) | 2014-02-11 | 2014-02-11 | Forging method for driving screw bevel gear forge piece of automotive rear axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103846632A true CN103846632A (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410047499.1A Pending CN103846632A (en) | 2014-02-11 | 2014-02-11 | Forging method for driving screw bevel gear forge piece of automotive rear axle |
Country Status (1)
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| CN (1) | CN103846632A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384877A (en) * | 2014-11-13 | 2015-03-04 | 四川省雅安市羌江机械有限责任公司 | Processing process of rear axle circular cone driven gear |
| CN106636891A (en) * | 2016-11-17 | 2017-05-10 | 马鞍山市银鼎机械制造有限公司 | Preparation method of ball milling cast iron for shock resisting railway steel rail |
| CN109848664A (en) * | 2019-02-22 | 2019-06-07 | 武汉理工大学 | A kind of automobile rear axle driven gear base forging forming method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0549057A1 (en) * | 1991-12-23 | 1993-06-30 | VOLVO CAR SINT-TRUIDEN, naamloze vennootschap | Method for the manufacturing of gear-wheels, gear-wheels thus obtained and gear-wheel pump equipped therewith |
| CN102699645A (en) * | 2012-06-27 | 2012-10-03 | 江苏金源锻造股份有限公司 | Isothermal normalizing process for gear of wind driven generator |
| 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 |
| CN102886661A (en) * | 2012-09-11 | 2013-01-23 | 昌利锻造有限公司 | Method for forging spiral bevel gear pinion of automobile rear axle |
| CN103506817A (en) * | 2013-09-17 | 2014-01-15 | 马鞍山市益华液压机具有限公司 | Manufacturing method of steel ratchet wheel |
-
2014
- 2014-02-11 CN CN201410047499.1A patent/CN103846632A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0549057A1 (en) * | 1991-12-23 | 1993-06-30 | VOLVO CAR SINT-TRUIDEN, naamloze vennootschap | Method for the manufacturing of gear-wheels, gear-wheels thus obtained and gear-wheel pump equipped therewith |
| CN102699645A (en) * | 2012-06-27 | 2012-10-03 | 江苏金源锻造股份有限公司 | Isothermal normalizing process for gear of wind driven generator |
| CN102886661A (en) * | 2012-09-11 | 2013-01-23 | 昌利锻造有限公司 | Method for forging spiral bevel gear pinion of automobile rear axle |
| 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 |
| CN103506817A (en) * | 2013-09-17 | 2014-01-15 | 马鞍山市益华液压机具有限公司 | Manufacturing method of steel ratchet wheel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384877A (en) * | 2014-11-13 | 2015-03-04 | 四川省雅安市羌江机械有限责任公司 | Processing process of rear axle circular cone driven gear |
| CN106636891A (en) * | 2016-11-17 | 2017-05-10 | 马鞍山市银鼎机械制造有限公司 | Preparation method of ball milling cast iron for shock resisting railway steel rail |
| CN109848664A (en) * | 2019-02-22 | 2019-06-07 | 武汉理工大学 | A kind of automobile rear axle driven gear base forging forming method |
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Application publication date: 20140611 |