CN101885112B - Automobile drive axle differential housing with from mantle tooth laser welding connection method - Google Patents
Automobile drive axle differential housing with from mantle tooth laser welding connection method Download PDFInfo
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- CN101885112B CN101885112B CN201010224067.5A CN201010224067A CN101885112B CN 101885112 B CN101885112 B CN 101885112B CN 201010224067 A CN201010224067 A CN 201010224067A CN 101885112 B CN101885112 B CN 101885112B
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Abstract
The present invention relates to a kind of 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: adopt the special fixture with location and clamping function differential casing and locating from the welding end surface of mantle tooth to be clamped; By the component clamping that clamps on NC rotary table, adopt the light-conducting system of reflective focusing structure by the beam transmission after focusing on to welding region, utilize He-Ne laser to carry out coaxial positioning; Material due to differential casing is spheroidal graphite cast-iron, and the material of driven vertebra tooth is carburizing steel, must adopt wire filling laser welding method, with wire feeder, specific welding wire be delivered to commissure with the speed of 0.5m/min ~ 9m/min; Nitrogen, helium or argon gas is adopted to protect molten bath in welding.Its bonding strength is high, and heat affected area is little, is out of shape little, can reach instructions for use; Structure simplifies, and quality alleviates, and reduces production cost.
Description
Technical field
The present invention relates to a kind of automobile drive axle differential housing and from mantle tooth laser welding connection method, belong to laser welding technology field.
Background technology
In light sedan-chair automobile drive axle manufacturing process in the past, the differential casing manufactured by spheroidal graphite cast-iron adopts bolt-connection with the connected mode from mantle tooth manufactured by carburizing steel; The method manufacture 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 Laser Welding method of mantle tooth, its have with low cost, structure simple, save the feature of material, consistent with the development trend of automotive light weight technology, energy-saving; And laser weld has the features such as speed is fast, 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 with location and clamping function differential casing and locating from the welding end surface of mantle tooth to be clamped; By the component clamping that clamps on NC rotary table, rotary table rotates with the speed of 2r/min ~ 40r/min; (2) adopt the light-conducting system of reflective focusing structure by focus on after beam transmission to welding region, utilize He-Ne laser to carry out coaxial positioning; Wherein welding track line place plane is S1, tangent with welding track line and plane perpendicular to S1 is S2, and the angle of the laser beam axis after focusing and S2 plane is α, is β with the angle of S1 plane; Equally, the angle of welding wire axis and S2 plane is γ, is δ with the angle of S1 plane; The distance that axis of a weld is departed from welding wire end is L1, is L2 apart from laser beam foucing distance; Laser beam power scope 1kW ~ 8kW during welding, focused spot defocusing amount-8mm ~+8mm, incident direction location is divided into following three kinds of modes: (A) laser path is to incidence, and laser beam axis is positioned at S1 plane and β=0 °, and with angle α=90 ° of S2 plane; (B) laser axis is to incidence, angle α=0 ° of laser beam axis and S2 plane, and with angle β=90 ° of S1 plane, beam axis is 10mm ~ 200mm apart from driven conical tooth shaft linear distance.(C) laser oblique incidence, the angular range 0 °≤α < 90 ° of laser beam axis and S2, S1 plane, 0 °≤β < 90 °, and α, β can not equal 0 ° simultaneously; While laser weld, with wire feeder, specific welding wire is delivered to commissure with the speed of .5m/min ~ 9m/min, welding wire is fused to be formed with both sides mother metal after laser beam melts to be welded
Seam, its gage of wire 0.5mm ~ 3mm, wire feed direction span is 0 °≤δ≤90 °, 0 °≤γ≤90 °, welding wire end apart from Weld pipe mill linear distance 0≤L1≤3mm, wire feed direction and welding direction angle 0 ° ~ 175 °; Laser beam foucing distance welding wire end-8mm≤L2≤8mm; Nitrogen, helium or argon gas is adopted to protect molten bath in welding.
Described laser weld weld seam is radial to various ring-like weld seams such as axial docking, termination, corner connections.
Good effect of the present invention be laser welding car drive axle differential case body with from mantle tooth, bonding strength is high, and heat affected area is little, is out of shape little, can reach instructions for use; The method can make structure simplify compared with bolt-connection, and quality alleviates, and can reduce production cost.
Accompanying drawing explanation
Fig. 1 is welding schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described:
Embodiment 1:
By automobile drive axle differential housing with assemble from mantle tooth, the sub-assembly clamping assembled can incline on the chuck of NC rotary table, and weldment is rotated on request in welding process, to realize different speeds of welding.Adopt He-Ne laser beam to carry out laser positioning, the beam transmission after focusing on is carried out laser weld to welding region.Laser incidence is radial incident, laser beam focus focus defocusing amount-3mm ~+3mm.In laser beam welding, laser instrument Output of laser power 1kW ~ 3kW; Weld fast .5m/min ~ 3m/min; Wire filling laser welding method must be adopted, with wire feeder by specific welding wire with certain speed 0.5m/min ~ 3m/min) deliver to commissure, gage of wire 0.5mm ~ 2mm; Wire feed direction and welding direction angle 75 °, welding wire axis and δ=0 °, S1 plane included angle, with 0 °, S2 plane included angle < γ < 90 °.
Weld pipe mill linear distance 0 < L1≤1mm is departed from welding wire end, apart from laser beam foucing distance-3mm≤L2≤3mm.One or more gases such as gas and compressed air in nitrogen, argon gas or helium are adopted to protect welding pool and optical element in welding process in welding process, gas flow 5 ~ 25L/min.Laser weld mode: overlap welding, fillet welding, butt welding.Weld seam is even, continuous distributed, weld width 0.5 ~ 4mm, weld penetration 2 ~ 10mm.
Embodiment 2:
By differential casing with assemble from mantle tooth, the sub-assembly clamping assembled can inclined on numerical control table, NC table, weldment is rotated on request in welding process, to realize different speeds of welding.Adopt He-Ne laser beam to carry out laser positioning, be transferred to welding region to enable laser beam.The incidence of laser adopts axially incident, and incidence point is 90mm ~ 100mm apart from axial line distance.Laser beam focus focus defocusing amount-3mm ~+3mm; The laser power adopted in welding is 4kW ~ 8kW; Speed of welding 1m/min ~ 4m/min; Adopt laser filling wire welding, wire feed rate is 1m/min ~ 4m/min, and the gage of wire adopted is 0.5mm ~ 2mm; Wire feed direction and welding direction angle 125 °, welding wire axis and γ=0 °, S2 plane included angle, with 0 °, S1 plane included angle < δ < 90 °.Weld pipe mill linear distance 1mm < L1≤2mm is departed from welding wire end, apart from laser beam foucing distance-3mm≤L2≤3mm.One or more gases such as gas and compressed air in nitrogen, argon gas or helium are adopted to protect welding pool and optical element in welding process in welding process, gas flow 5 ~ 25L/min.Laser weld mode is overlap welding, fillet welding, butt welding.Weld seam is even, continuous distributed, weld width 0.5 ~ 4mm, weld penetration 2 ~ 10mm.
Embodiment 3:
As shown in Figure 1, broken circle is welding track line, and its place plane is S1, tangent with welding track line and plane perpendicular to S1 is S2.The angle of the laser beam axis after focusing and S2 plane is α, is β with the angle of S1 plane.Equally, the angle of welding wire axis and S2 plane is γ, is δ with the angle of S1 plane.The distance that axis of a weld is departed from welding wire end is L1, is L2 apart from laser beam foucing distance.
By differential casing with assemble rear clamping from mantle tooth and can incline numerical control table, NC table, weldment is rotated in welding process, to realize different speeds of welding on request.Adopt He-Ne laser beam to carry out laser positioning, be transferred to welding region to enable laser beam.Laser incidence adopts oblique incidence, laser beam focus focus defocusing amount-3mm ~+3mm; The laser power adopted in welding is 2kW ~ 4kW, speed of welding 2m/min ~ 8m/min; Adopt laser filling wire welding, wire feed rate is 2m/min ~ 6m/min, and the gage of wire adopted is 0.5mm ~ 2mm; Wire feed direction is determined by angle δ, γ of welding wire axis and S1, S2 plane, wire feed direction and welding direction angle 160 °, welding wire axis and S1, S2 plane included angle span are 0 ° of < δ <, 90 °, 0 ° < γ < 90 °, welding wire end is apart from the distance L1=0 of axis of a weld, and distance laser beam foucing is apart from-3mm≤L2≤3mm.One or more gases such as gas and compressed air in nitrogen, argon gas or helium are adopted to protect welding pool and optical element in welding process in welding process, gas flow 5 ~ 25L/min.Laser weld mode is overlap welding, fillet welding, butt welding.Weld seam is even, continuous distributed, weld width 0.5 ~ 4mm, weld penetration 2 ~ 10mm.
Claims (2)
1. 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 with location and clamping function differential casing and locating from the welding end surface of mantle tooth to be clamped; By the component clamping that clamps on NC rotary table, rotary table rotates with the speed of 2r/min ~ 40r/min; (2) adopt the light-conducting system of reflective focusing structure by focus on after beam transmission to welding region, utilize He-Ne laser to carry out coaxial positioning; Wherein welding track line place plane is S1, tangent with welding track line and plane perpendicular to S1 is S2, and the angle of the laser beam axis after focusing and S2 plane is α, is β with the angle of S1 plane; Equally, the angle of welding wire axis and S2 plane is γ, is δ with the angle of S1 plane; The distance that axis of a weld is departed from welding wire end is L1, is L2 apart from laser beam foucing distance; Laser beam power scope 1kW ~ 8kW during welding, focused spot defocusing amount-8mm ~+8mm, laser oblique incidence, the angular range 0 °≤α < 90 ° of laser beam axis and S2, S1 plane, 0 °≤β < 90 °, and α, β can not equal 0 ° simultaneously; While laser weld, with wire feeder, specific welding wire is delivered to commissure with the speed of 0.5m/min ~ 9m/min, welding wire is formed weld seam by fused with both sides mother metal after laser beam melts, its gage of wire 0.5mm ~ 3mm, wire feed direction span is 0 °≤δ≤90 °, 0 °≤γ≤90 °, welding wire end distance Weld pipe mill linear distance 0≤L1≤3mm, wire feed direction and welding direction angle 0 ° ~ 175 °; Laser beam foucing distance welding wire end-8mm≤L2≤8mm; Nitrogen, helium or argon gas is adopted to protect molten bath in welding.
2. automobile drive axle differential housing according to claim 1 and the method for laser welding from mantle tooth, is characterized in that described laser weld weld seam for radial to axially docking, termination, the various ring-like weld seam of corner connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010224067.5A 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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| CN201010224067.5A 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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| CN101885112A CN101885112A (en) | 2010-11-17 |
| CN101885112B true CN101885112B (en) | 2016-01-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102658426B (en) * | 2012-05-11 | 2016-01-20 | 中国第一汽车股份有限公司 | Driver flexible disk assembly method for laser welding between engine and gearbox |
| 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 |
| US20160016258A1 (en) * | 2014-07-17 | 2016-01-21 | GM Global Technology Operations LLC | Weld for differential assembly |
| 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 |
Citations (4)
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| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2639055B2 (en) * | 1989-02-20 | 1997-08-06 | 三菱電機株式会社 | Laser processing machine |
| JP4858513B2 (en) * | 2008-08-22 | 2012-01-18 | トヨタ自動車株式会社 | Method of joining differential device and joining aid |
| CN101502918A (en) * | 2009-01-16 | 2009-08-12 | 北京工业大学 | Method for reducing laser welding pores of cast magnesium alloy |
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- 2010-07-09 CN CN201010224067.5A patent/CN101885112B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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