CN106040955A - Forging process of gear shaft - Google Patents
Forging process of gear shaft Download PDFInfo
- Publication number
- CN106040955A CN106040955A CN201610706850.2A CN201610706850A CN106040955A CN 106040955 A CN106040955 A CN 106040955A CN 201610706850 A CN201610706850 A CN 201610706850A CN 106040955 A CN106040955 A CN 106040955A
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- China
- Prior art keywords
- circular arc
- swage block
- fire
- convex surface
- forging
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/12—Making machine elements axles or shafts of specially-shaped cross-section
Abstract
The invention relates to forging process of a gear shaft. The forging process includes the steps of firstly, using first fire to heat a blank steel ingot to 1200 DEG C, pressing a tongs hold, chamfering, and grinding a water gap; secondly, using second fire to heat the blank material obtained in the first step to 1150-1180 DEG C, using an arc-tooth-shaped swage block with a convex upper portion and a concave lower portion to perform upsetting, and drawing out; thirdly, using third fire to heat the blank material obtained in the second step to 1100-1120 DEG C, and performing closed rolling-extruding; fourthly, performing finish forging at 800 DEG C, to be more specific, using a flame furnace to perform one-stage heating, using the arc-tooth-shaped swage block with the convex upper portion and the concave lower portion to perform upsetting, and drawing out to the regulated size; fifthly, performing heat treatment, to be more specific, heating to 850+/-10 DEG C, keeping the temperature for 1-1.5 hours, performing air cooling to reach 500 DEG C, heating to 600+/-10 DEG C, and performing air cooling. The forging process has the advantages that the product produced by the forging process is even in internal deformation, easy in formation, good in internal quality and high in toughness.
Description
Technical field
The invention belongs to technical field of forging, particularly relate to the Forging Technology of a kind of gear shaft.
Background technology
Gear shaft is mechanical transmission part important in the main equipment such as steam turbine, electromotor, its quality height directly shadow
Ring the performance level of Related product.Gear shaft Forging Technology is primarily present the most at home: the uneven grade of internal modification lacks
Fall into, cause toughness poor.
Summary of the invention
The purpose of the present invention is in order to solve above-mentioned technical problem, it is provided that the Forging Technology of a kind of gear shaft, and this technique overcomes
The defect that internal modification is uneven.Its technical scheme is as follows: the Forging Technology of a kind of gear shaft, it is characterised in that: include as
Lower step: 1), the first fire blank Heating Steel Ingots temperature to 1200 DEG C, bar hold, chamfered edge, the wrong mouth of a river；2), the second fire is to 1) step obtains
The base material obtained heats again, is heated to 1150 ~ 1180 DEG C, uses circular arc dentation epirelief recessed swage block jumping-up, pulling；3)、
3rd fire is to 2) the base material that obtains of step heats again, is heated to 1100 ~ 1120 DEG C, enclosed edging；4), finish-forging: finish-forging temperature
Spending 800 DEG C, use the heating of flame furnace one-part form, use circular arc dentation epirelief recessed swage block jumping-up, pulling is to given size.5)、
Heat treatment: be heated to 850 ± 10 ° of C and be incubated 1-1.5 hour, air cooling to 500 ° C, it is heated to 600 ± 10 ° of C, air cooling；Described circular arc
The recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is two that both sides conical surface projection is arranged to centre protrude
The arc convex surface of individual above equal radii, and smooth excessively by circular arc camber between adjacent circular arc convex surface, lower swage block is the V-type conical surface
It is recessed to centre and is arranged to the arc convex surface of the two or more equal radii protruded, by circular arc camber between adjacent arc convex surface
Smooth excessively, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, described both sides conical surface angle and V-type
Conical surface angle is equal is all that α, α can change within the scope of 135 °～155 °.
Compared with prior art, the invention have the advantage that internal modification is uniform, it is easy to shaping, forging internal soundness is good, tough
Property high.
Detailed description of the invention
Embodiment one
A kind of Forging Technology of gear shaft, it is characterised in that: comprise the steps: 1), first fire blank Heating Steel Ingots temperature extremely
1200 DEG C, bar hold, chamfered edge, the wrong mouth of a river；2), the second fire is to 1) the base material that obtains of step heats again, is heated to 1150 DEG C,
Use circular arc dentation epirelief recessed swage block jumping-up, pulling；3), the 3rd fire is to 2) the base material that obtains of step heats again, heating
To 1100 DEG C, enclosed edging；4), finish-forging: final forging temperature 800 DEG C, employing flame furnace one-part form heating, employing circular arc dentation epirelief
Recessed swage block jumping-up, pulling is to given size.5), heat treatment: be heated to 800 ° of C insulations 1 hour, air cooling to 500 ° C, be heated to
590 ° of C, air cooling；The described circular arc recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is that both sides conical surface projection arrives
Centre is arranged to the arc convex surface of the two or more equal radii protruded, and is slipped over by circular arc camber light between adjacent circular arc convex surface
Degree, lower swage block is the arc convex surface that the V-type conical surface is recessed to that centre is arranged to the two or more equal radii of protrusion, adjacent circular arc
Between convex surface smooth excessively by circular arc camber, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, described
Both sides conical surface angle and V-type conical surface angle equal be all α, α be 135 °.
Embodiment two
A kind of Forging Technology of gear shaft, it is characterised in that: comprise the steps: 1), first fire blank Heating Steel Ingots temperature extremely
1200 DEG C, bar hold, chamfered edge, the wrong mouth of a river；2), the second fire is to 1) the base material that obtains of step heats again, is heated to 1160 DEG C,
Use circular arc dentation epirelief recessed swage block jumping-up, pulling；3), the 3rd fire is to 2) the base material that obtains of step heats again, heating
To 1110 DEG C, enclosed edging；4), finish-forging: final forging temperature 800 DEG C, employing flame furnace one-part form heating, employing circular arc dentation epirelief
Recessed swage block jumping-up, pulling is to given size.5), heat treatment: be heated to 850 ° of C insulations 1.3 hours, air cooling to 500 ° C, heating
To 600 ° of C, air cooling；The described circular arc recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is that the both sides conical surface is protruding
The arc convex surface of the two or more equal radii protruded it is arranged to centre, and smooth by circular arc camber between adjacent circular arc convex surface
Excessively, lower swage block is the arc convex surface that the V-type conical surface is recessed to that centre is arranged to the two or more equal radii of protrusion, adjacent circle
Between arc convex surface smooth excessively by circular arc camber, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, institute
State both sides conical surface angle and V-type conical surface angle equal be all α, α be 145 °.
Embodiment three
A kind of Forging Technology of gear shaft, it is characterised in that: comprise the steps: 1), first fire blank Heating Steel Ingots temperature extremely
1200 DEG C, bar hold, chamfered edge, the wrong mouth of a river；2), the second fire is to 1) the base material that obtains of step heats again, is heated to 1180 DEG C,
Use circular arc dentation epirelief recessed swage block jumping-up, pulling；3), the 3rd fire is to 2) the base material that obtains of step heats again, heating
To 1120 DEG C, enclosed edging；4), finish-forging: final forging temperature 800 DEG C, employing flame furnace one-part form heating, employing circular arc dentation epirelief
Recessed swage block jumping-up, pulling is to given size.5), heat treatment: be heated to 860 ° of C insulations 1.5 hours, air cooling to 500 ° C, heating
To 610 ° of C, air cooling；The described circular arc recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is that the both sides conical surface is protruding
The arc convex surface of the two or more equal radii protruded it is arranged to centre, and smooth by circular arc camber between adjacent circular arc convex surface
Excessively, lower swage block is the arc convex surface that the V-type conical surface is recessed to that centre is arranged to the two or more equal radii of protrusion, adjacent circle
Between arc convex surface smooth excessively by circular arc camber, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, institute
State both sides conical surface angle and V-type conical surface angle equal be all α, α be 155 °.
Claims (2)
1. the Forging Technology of a gear shaft, it is characterised in that: comprise the steps: 1), first fire blank Heating Steel Ingots temperature
To 1200 DEG C, bar hold, chamfered edge, the wrong mouth of a river；2), the second fire is to 1) the base material that obtains of step heats again, it is heated to 1150 ~
1180 DEG C, use circular arc dentation epirelief recessed swage block jumping-up, pulling；3), the 3rd fire is to 2) the base material that obtains of step adds again
Heat, is heated to 1100 ~ 1120 DEG C, enclosed edging；4), finish-forging: final forging temperature 800 DEG C, employing flame furnace one-part form heating, employing
Circular arc dentation epirelief recessed swage block jumping-up, pulling is to given size.
2.5), heat treatment: be heated to 850 ± 10 ° of C insulations 1～1.5 hour, air cooling to 500 ° C, be heated to 600 ± 10 ° of C, sky
Cold；The described circular arc recessed swage block of dentation epirelief, including upper swage block and lower swage block, upper swage block is that both sides conical surface projection is arranged to middle
Become the arc convex surface of the two or more equal radii protruded, and smooth excessively by circular arc camber between adjacent circular arc convex surface, mo(u)ld bottom half
Anvil is the arc convex surface of two or more equal radii that the V-type conical surface is recessed to that centre is arranged to protrude, adjacent arc convex surface it
Between smooth excessively by circular arc camber, also smooth excessively by circular arc camber between described arc convex surface and the V-type conical surface, described both sides bore
Face angle and V-type conical surface angle equal be all that α, α can change within the scope of 135 °～155 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610706850.2A CN106040955B (en) | 2016-08-24 | 2016-08-24 | A kind of forging technology of gear shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610706850.2A CN106040955B (en) | 2016-08-24 | 2016-08-24 | A kind of forging technology of gear shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106040955A true CN106040955A (en) | 2016-10-26 |
| CN106040955B CN106040955B (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610706850.2A Active CN106040955B (en) | 2016-08-24 | 2016-08-24 | A kind of forging technology of gear shaft |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107282836A (en) * | 2017-06-29 | 2017-10-24 | 宁波吉威熔模铸造有限公司 | A kind of casting technique of reinforced train shaft coupling |
| CN108581398A (en) * | 2018-04-28 | 2018-09-28 | 浙江恒利五金科技有限公司 | A kind of high-precision automobile gear and its forging method |
| CN108994248A (en) * | 2018-09-17 | 2018-12-14 | 杭州金越晟重型机械有限公司 | A kind of gear forging technique |
| CN108994247A (en) * | 2018-09-17 | 2018-12-14 | 杭州金越晟重型机械有限公司 | A kind of gear shaft forging technology |
| CN111473040A (en) * | 2020-03-26 | 2020-07-31 | 常州市天工锻造有限公司 | Gear shaft assembly and machining process thereof |
| CN112247486A (en) * | 2020-10-12 | 2021-01-22 | 江苏金源高端装备股份有限公司 | Production method of gear shaft for rail transit |
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| JPS60231548A (en) * | 1984-01-10 | 1985-11-18 | Hiraguchi Seitan Kk | Production of collared and geared shaft by cold forging |
| CN1066077C (en) * | 1997-04-07 | 2001-05-23 | 燕山大学 | New technology for forging horizontal V-shaped conical anvil |
| CN101513644A (en) * | 2009-03-17 | 2009-08-26 | 华东理工大学 | Preparation method for nano structure metal materials |
| CN101695737A (en) * | 2009-10-21 | 2010-04-21 | 清华大学 | Angle swage block and forging technology using same |
| CN102029347A (en) * | 2010-12-29 | 2011-04-27 | 中原特钢股份有限公司 | Manufacturing method of gear shaft forge piece for offshore drilling platform |
| CN104668433A (en) * | 2015-02-03 | 2015-06-03 | 江苏金源锻造股份有限公司 | Big gear forging process |
| CN104858345A (en) * | 2015-06-03 | 2015-08-26 | 杭州前进锻造有限公司 | Method for die forging of gear box output shaft |
| CN104923709A (en) * | 2015-06-12 | 2015-09-23 | 何庆堃 | Automobile middle shaft forging process |
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2016
- 2016-08-24 CN CN201610706850.2A patent/CN106040955B/en active Active
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|---|---|---|---|---|
| JPS60231548A (en) * | 1984-01-10 | 1985-11-18 | Hiraguchi Seitan Kk | Production of collared and geared shaft by cold forging |
| CN1066077C (en) * | 1997-04-07 | 2001-05-23 | 燕山大学 | New technology for forging horizontal V-shaped conical anvil |
| CN101513644A (en) * | 2009-03-17 | 2009-08-26 | 华东理工大学 | Preparation method for nano structure metal materials |
| CN101695737A (en) * | 2009-10-21 | 2010-04-21 | 清华大学 | Angle swage block and forging technology using same |
| CN102029347A (en) * | 2010-12-29 | 2011-04-27 | 中原特钢股份有限公司 | Manufacturing method of gear shaft forge piece for offshore drilling platform |
| CN104668433A (en) * | 2015-02-03 | 2015-06-03 | 江苏金源锻造股份有限公司 | Big gear forging process |
| CN104858345A (en) * | 2015-06-03 | 2015-08-26 | 杭州前进锻造有限公司 | Method for die forging of gear box output shaft |
| CN104923709A (en) * | 2015-06-12 | 2015-09-23 | 何庆堃 | Automobile middle shaft forging process |
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| 黄亮等: "汽车中间轴锻造工艺的优化", 《金属铸锻焊技术》 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107282836A (en) * | 2017-06-29 | 2017-10-24 | 宁波吉威熔模铸造有限公司 | A kind of casting technique of reinforced train shaft coupling |
| CN108581398A (en) * | 2018-04-28 | 2018-09-28 | 浙江恒利五金科技有限公司 | A kind of high-precision automobile gear and its forging method |
| CN108994248A (en) * | 2018-09-17 | 2018-12-14 | 杭州金越晟重型机械有限公司 | A kind of gear forging technique |
| CN108994247A (en) * | 2018-09-17 | 2018-12-14 | 杭州金越晟重型机械有限公司 | A kind of gear shaft forging technology |
| CN111473040A (en) * | 2020-03-26 | 2020-07-31 | 常州市天工锻造有限公司 | Gear shaft assembly and machining process thereof |
| CN112247486A (en) * | 2020-10-12 | 2021-01-22 | 江苏金源高端装备股份有限公司 | Production method of gear shaft for rail transit |
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| CN106040955B (en) | 2018-10-16 |
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