CN101885112A - Laser welding connection method of automobile drive axle differential housing and driven bevel gear - Google Patents
Laser welding connection method of automobile drive axle differential housing and driven bevel gear Download PDFInfo
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- CN101885112A CN101885112A CN2010102240675A CN201010224067A CN101885112A CN 101885112 A CN101885112 A CN 101885112A CN 2010102240675 A CN2010102240675 A CN 2010102240675A CN 201010224067 A CN201010224067 A CN 201010224067A CN 101885112 A CN101885112 A CN 101885112A
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Abstract
The invention relates to a laser welding method of an automobile drive axle differential housing and a driven bevel gear, which is characterized by comprising the following concrete steps: positioning and clamping the differential housing and the welding end surface of the driven bevel gear by adopting a special clamp with positioning and clamping functions; clamping the clamped assembly on a numerically-controlled rotary working table; transmitting the focused laser beams to a welding zone by adopting a light guide system of a reflective focusing structure; and carrying out coaxial positioning by utilizing He-Ne lasers. Because the differential housing is made of nodular cast iron and the driven bevel gear is made of carburizing steels, a laser filler wire welding method needs to be adopted, and a wire feeder is used for feeding specific welding wires to welding seams at the rate of 0.5m/min-9m/min. In the welding process, nitrogen gas, helium gas or argon gas are used for protecting a molten pool. The invention has the advantages of high connection strength, small heat affected zone and small deformation, can achieve the using requirement, simplifies the structure, lightens the weight and reduces the production cost.
Description
Technical field
The present invention relates to a kind of automobile drive axle differential housing and, belong to the laser welding technology field from mantle tooth laser welding connection method.
Background technology
In light sedan-chair automobile drive axle manufacturing process in the past, adopt Bolt Connection by spheroidal graphite cast-iron differential casing of making and the connected mode of making by carburizing steel from the mantle tooth; This method manufacturing processing is comparatively complicated, is unfavorable for the simplification of structural design and the reduction of cost.
Summary of the invention
The object of the present invention is to provide a kind of automobile drive axle differential housing with from the method for laser welding of mantle tooth, it has characteristics with low cost, simple in structure, economical with materials, and is consistent with the development trend of automobile lightweight, energy-conservationization; And laser weld has characteristics such as speed is fast, the heat affected area is narrow, welding deformation is little, is specially adapted to the welding of foreign material.
Technical scheme of the present invention be achieved in that automobile drive axle differential housing with from the method for laser welding of mantle tooth, it is characterized in that concrete step is as follows: (1) adopts the special fixture that has the location and clamp function that differential casing and welding end surface location from the mantle tooth are clamped; On NC rotary table, rotary table is with the speed rotation of 2r/min～40r/min with the component clamping that clamps; (2) laser beam after the light-conducting system of the reflective focusing structure of employing will focus on transfers to welding region, utilizes He-Ne laser to carry out coaxial positioning; Wherein plane, welding track line place is S
1, tangent and perpendicular to S with the welding track line
1The plane be S
2, laser beam axis after the focusing and S
2The angle on plane is α, with S
1The angle on plane is β; Equally, welding wire axis and S
2The angle on plane is γ, with S
1The angle on plane is δ; The distance that axis of a weld is departed from the welding wire end is L
1, be L apart from the laser beam foucing distance
2Laser beam power scope 1kW～8kW during welding, focusing focus defocusing amount-8mm～+ 8mm, the incident direction location is divided into following three kinds of modes: (A) laser path is to incident, and laser beam axis is positioned at S
1In the plane β=0 °, and and S
2Angle α=90 on plane °; (B) laser axis is to incident, laser beam axis and S
2Angle α=0 on plane °, and and S
1Angle β=90 on plane °, beam axis is 10mm～200mm apart from driven vertebra tooth axial line distance.(C) laser oblique incidence, laser beam axis and S
2, S
10 °≤the α of angular range on plane＜90 °, 0 °≤β＜90 °, and α, β can not equal 0 ° simultaneously; In laser weld, with wire feeder specific welding wire is delivered to the commissure with the speed of 0.5m/min～9m/min, welding wire is by the fused weld seam that forms of laser beam fusing back and both sides mother metal, its gage of wire 0.5mm～3mm, wire feed direction span is 0 °≤δ≤90 °, 0 °≤γ≤90 °, and the welding wire end is apart from axis of a weld distance 0≤L
1≤ 3mm, 0 °～175 ° of wire feed direction and welding direction angles; Laser beam foucing is apart from welding wire end-8mm≤L
2≤ 8mm; Adopt nitrogen, helium or argon gas that the molten bath is protected in the welding.
Described laser weld weld seam is various ring-like weld seams such as radially extremely axial butt joint, termination, corner connection.
Good effect of the present invention be laser welding car drive axle differential casing with from the mantle tooth, the bonding strength height, the heat affected area is little, is out of shape for a short time, can reach instructions for use; Compare this method with Bolt Connection and can make designs simplification, quality alleviates, and can reduce production costs.
Description of drawings:
Fig. 1 is a welding schematic diagram of the present invention
The specific embodiment:
The present invention will be further described below in conjunction with embodiment:
Embodiment 1:
Automobile drive axle differential housing and driven vertebra tooth are assembled, and the sub-assembly clamping that assembles is rotated weldment on the chuck of NC rotary table that can incline on request in welding process, to realize different speeds of welding.Adopt the He-Ne laser beam to carry out laser positioning, the laser beam after focusing on is transferred to welding region carry out laser weld.Laser incident mode is radially incident, laser beam focusing focus defocusing amount-3mm～+ 3mm.In the laser beam welding, laser instrument output laser power 1kW～3kW; Speed of welding 0.5m/min～3m/min; Must adopt the wire filling laser welding method, (0.5m/min～3m/min) delivers to commissure, gage of wire 0.5mm～2mm with certain speed with specific welding wire with wire feeder; 75 ° of wire feed direction and welding direction angles, welding wire axis and S
1Plane included angle δ=0 ° is with S
20 °＜the γ in plane included angle＜90 °.Axis of a weld distance 0＜L is departed from the welding wire end
1≤ 1mm is apart from laser beam foucing distance-3mm≤L
2≤ 3mm.Adopt in nitrogen, argon gas or the helium gas such as one or more gases and compressed air in welding process, welding pool and optical element to be protected gas flow 5～25L/min in the welding process.Laser weld mode: overlap welding, fillet welding, butt welding.Weld seam is evenly, continuous distributed, weld width 0.5～4mm, weld penetration 2～10mm.
Embodiment 2:
Differential casing and driven vertebra tooth are assembled, on the numerical control table, NC table that can incline, weldment is rotated on request, in welding process the sub-assembly clamping that assembles to realize different speeds of welding.Laser beam adopt the He-Ne laser beam to carry out laser positioning, so that can be transferred to welding region.The incident mode of laser adopts axial incident, and incidence point is 90mm～100mm apart from axial line distance.Laser beam focusing focus defocusing amount-3mm～+ 3mm; The laser power that is adopted in the welding is 4kW～8kW; Speed of welding 1m/min～4m/min; The employing wire filling laser welding connects, and wire feed rate is 1m/min～4m/min, and the gage of wire that is adopted is 0.5mm～2mm; 125 ° of wire feed direction and welding direction angles, welding wire axis and S
2Plane included angle γ=0 ° is with S
10 °＜the δ in plane included angle＜90 °.Axis of a weld is departed from apart from 1mm＜L in the welding wire end
1≤ 2mm is apart from laser beam foucing distance-3mm≤L
2≤ 3mm.Adopt in nitrogen, argon gas or the helium gas such as one or more gases and compressed air in welding process, welding pool and optical element to be protected gas flow 5～25L/min in the welding process.The laser weld mode is overlap welding, fillet welding, butt welding.Weld seam is evenly, continuous distributed, weld width 0.5～4mm, weld penetration 2～10mm.
Embodiment 3:
As shown in Figure 1, broken circle is the welding track line, and its plane, place is S
1, tangent and perpendicular to S with the welding track line
1The plane be S
2Laser beam axis after the focusing and S
2The angle on plane is α, with S
1The angle on plane is β.Equally, welding wire axis and S
2The angle on plane is γ, with S
1The angle on plane is δ.The distance that axis of a weld is departed from the welding wire end is L
1, be L apart from the laser beam foucing distance
2
Differential casing and driven vertebra tooth are assembled the back clamping on the numerical control table, NC table that can incline, weldment is rotated on request, in welding process to realize different speeds of welding.Laser beam adopt the He-Ne laser beam to carry out laser positioning, so that can be transferred to welding region.Laser incident mode adopts oblique incidence, laser beam focusing focus defocusing amount-3mm～+ 3mm; The laser power that is adopted in the welding is 2kW～4kW, speed of welding 2m/min～8m/min; The employing wire filling laser welding connects, and wire feed rate is 2m/min～6m/min, and the gage of wire that is adopted is 0.5mm～2mm; The wire feed direction is by welding wire axis and S
1, S
2Angle δ, the γ on plane determines, 160 ° of wire feed direction and welding direction angles, welding wire axis and S
1, S
2The plane included angle span is 0 °＜δ＜90 °, 0 °＜γ＜90 °, and the welding wire end is apart from the distance L of axis of a weld
1=0, apart from laser beam foucing distance-3mm≤L
2≤ 3mm.Adopt in nitrogen, argon gas or the helium gas such as one or more gases and compressed air in welding process, welding pool and optical element to be protected gas flow 5～25L/min in the welding process.The laser weld mode is overlap welding, fillet welding, butt welding.Weld seam is evenly, continuous distributed, weld width 0.5～4mm, weld penetration 2～10mm.
Claims (2)
- Automobile drive axle differential housing with from the method for laser welding of mantle tooth, it is characterized in that concrete step is as follows: (1) adopts the special fixture that has the location and clamp function that differential casing and welding end surface location from the mantle tooth are clamped; On NC rotary table, rotary table is with the speed rotation of 2r/min～40r/min with the component clamping that clamps; (2) laser beam after the light-conducting system of the reflective focusing structure of employing will focus on transfers to welding region, utilizes He-Ne laser to carry out coaxial positioning; Wherein plane, welding track line place is S 1, tangent and perpendicular to S with the welding track line 1The plane be S 2, laser beam axis after the focusing and S 2The angle on plane is α, with S 1The angle on plane is β; Equally, welding wire axis and S 2The angle on plane is γ, with S 1The angle on plane is δ; The distance that axis of a weld is departed from the welding wire end is L 1, be L apart from the laser beam foucing distance 2Laser beam power scope 1kW～8kW during welding, focusing focus defocusing amount-8mm～+ 8mm, the incident direction location is divided into following three kinds of modes: (A) laser path is to incident, and laser beam axis is positioned at S 1In the plane β=0 °, and and S 2Angle α=90 on plane °; (B) laser axis is to incident, laser beam axis and S 2Angle α=0 on plane °, and and S 1Angle β=90 on plane °, beam axis is 10mm～200mm apart from driven vertebra tooth axial line distance.(C) laser oblique incidence, laser beam axis and S 2, S 10 °≤the α of angular range on plane＜90 °, 0 °≤β＜90 °, and α, β can not equal 0 ° simultaneously; In laser weld, with wire feeder specific welding wire is delivered to the commissure with the speed of 0.5m/min～9m/min, welding wire is by the fused weld seam that forms of laser beam fusing back and both sides mother metal, its gage of wire 0.5mm～3mm, wire feed direction span is 0 °≤δ≤90 °, 0 °≤γ≤90 °, and the welding wire end is apart from axis of a weld distance 0≤L 1≤ 3mm, 0 °～175 ° of wire feed direction and welding direction angles; Laser beam foucing is apart from welding wire end-8mm≤L 2≤ 8mm; Adopt nitrogen, helium or argon gas that the molten bath is protected in the welding.
- 2. automobile drive axle differential housing according to claim 1 with from the method for laser welding of mantle tooth, it is characterized in that described laser weld weld seam is for radially to various ring-like weld seams such as axial butt joint, termination, corner connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010224067.5A CN101885112B (en) | 2010-07-09 | 2010-07-09 | Automobile drive axle differential housing with from mantle tooth laser welding connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010224067.5A CN101885112B (en) | 2010-07-09 | 2010-07-09 | Automobile drive axle differential housing with from mantle tooth laser welding connection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101885112A true CN101885112A (en) | 2010-11-17 |
| CN101885112B CN101885112B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010224067.5A Active CN101885112B (en) | 2010-07-09 | 2010-07-09 | Automobile drive axle differential housing with from mantle tooth laser welding connection method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658427A (en) * | 2012-05-11 | 2012-09-12 | 中国第一汽车股份有限公司 | Laser welding method for actuator flexible disk and splined hub |
| CN102658426A (en) * | 2012-05-11 | 2012-09-12 | 中国第一汽车股份有限公司 | Laser welding method of driver flexible disk assembly between engine and speed changing box |
| CN105290634A (en) * | 2014-07-17 | 2016-02-03 | 通用汽车环球科技运作有限责任公司 | Weld for differential assembly |
| CN110052709A (en) * | 2019-04-23 | 2019-07-26 | 中国第一汽车股份有限公司 | A kind of Clutch Coupling formula motor rotor rack is connected with exporting axis method |
Citations (7)
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| JPH02220791A (en) * | 1989-02-20 | 1990-09-03 | Mitsubishi Electric Corp | Laser beam machine |
| CN1217248A (en) * | 1997-11-17 | 1999-05-26 | 大众汽车有限公司 | Laser welding method |
| CN1597231A (en) * | 2004-08-13 | 2005-03-23 | 中国第一汽车集团公司 | Laser welding method for carburized gear wheel of automobile gearbox |
| CN101007370A (en) * | 2007-01-26 | 2007-08-01 | 北京工业大学 | Laser welding with filler wire method of aluminum alloy T-type shapes for boat |
| CN101395407A (en) * | 2006-01-27 | 2009-03-25 | 美驰重型车系统卡梅里有限责任公司 | Differential gear casing and method |
| CN101502918A (en) * | 2009-01-16 | 2009-08-12 | 北京工业大学 | Method for reducing laser welding pores of cast magnesium alloy |
| JP2010046695A (en) * | 2008-08-22 | 2010-03-04 | Toyota Motor Corp | Joining method of differential gear and auxiliary tool for joining |
-
2010
- 2010-07-09 CN CN201010224067.5A patent/CN101885112B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02220791A (en) * | 1989-02-20 | 1990-09-03 | Mitsubishi Electric Corp | Laser beam machine |
| CN1217248A (en) * | 1997-11-17 | 1999-05-26 | 大众汽车有限公司 | Laser welding method |
| CN1597231A (en) * | 2004-08-13 | 2005-03-23 | 中国第一汽车集团公司 | Laser welding method for carburized gear wheel of automobile gearbox |
| CN101395407A (en) * | 2006-01-27 | 2009-03-25 | 美驰重型车系统卡梅里有限责任公司 | Differential gear casing and method |
| CN101007370A (en) * | 2007-01-26 | 2007-08-01 | 北京工业大学 | Laser welding with filler wire method of aluminum alloy T-type shapes for boat |
| JP2010046695A (en) * | 2008-08-22 | 2010-03-04 | Toyota Motor Corp | Joining method of differential gear and auxiliary tool for joining |
| CN101502918A (en) * | 2009-01-16 | 2009-08-12 | 北京工业大学 | Method for reducing laser welding pores of cast magnesium alloy |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658427A (en) * | 2012-05-11 | 2012-09-12 | 中国第一汽车股份有限公司 | Laser welding method for actuator flexible disk and splined hub |
| CN102658426A (en) * | 2012-05-11 | 2012-09-12 | 中国第一汽车股份有限公司 | Laser welding method of driver flexible disk assembly between engine and speed changing box |
| CN102658427B (en) * | 2012-05-11 | 2015-05-06 | 中国第一汽车股份有限公司 | Laser welding method for actuator flexible disk and splined hub |
| CN105290634A (en) * | 2014-07-17 | 2016-02-03 | 通用汽车环球科技运作有限责任公司 | Weld for differential assembly |
| CN110052709A (en) * | 2019-04-23 | 2019-07-26 | 中国第一汽车股份有限公司 | A kind of Clutch Coupling formula motor rotor rack is connected with exporting axis method |
| CN110052709B (en) * | 2019-04-23 | 2021-05-11 | 中国第一汽车股份有限公司 | Method for connecting rotor bracket of clutch coupling type motor with output shaft |
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| Publication number | Publication date |
|---|---|
| CN101885112B (en) | 2016-01-06 |
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