CN203843372U

CN203843372U - Car body member

Info

Publication number: CN203843372U
Application number: CN201420161928.3U
Authority: CN
Inventors: 迪特玛·罗瑟尔特
Original assignee: Ford Global Technologies LLC
Current assignee: Ford Global Technologies LLC
Priority date: 2013-04-16
Filing date: 2014-04-03
Publication date: 2014-09-24
Anticipated expiration: 2024-04-03
Also published as: DE102013206768A1

Abstract

The utility model relates to a car body member used for a motor vehicle. The car body member is composed of at least two metal plates which are connected through laser welding and located in a flange region. Each metal plate has a curvature radius in the flange region; the two metal plates in the laser welding region have opposite curvature radiuses. Through the technical scheme of the utility model, the quality of a welding seam is not affected by either a member error or an error of an automatic welding machine during the welding process; in addition, exhaust problems are not generated or seldom generated.

Description

Bodywork component

Technical field

The utility model relates to a kind of bodywork component for motor vehicle.

Background technology

In the laser beam welding of zinc-plated sheet material, for example, in the manufacture process of the bodywork component of using in auto industry, often go wrong.So on such steel plate, be difficult to weld high-quality weld seam, first zinc should melt and partly evaporation in welding process, and the steam bubble wherein producing disturbs the steel molten bath producing in the weld seam producing.So for example in weld seam, form depression, scum silica frost and other scramblings.This problem also taking " exhausting problem " as everybody known to and can in other coating, occur equally.

Known as follows by DE-PS3812448C1: so construct the join domain of the thin plate of two coatings in order to solve described exhausting problem, two thin plates are collided with radius of curvature different but in the same way along weld seam and the two ends of weld seam are spaced apart from each other.But this scheme is only suitable for thin plate, in the time of welding, there is although there is camber the flexible sheet material that is enough to be pressed together.

In DE102008038372A1, propose: straight sheet material is collided with the angle of 2 to 8 degree in laser beam welding.In order to form needed angle, this point is that straight line extends to precondition really with sheet material on the position that need correspondingly weld.This is not often the possibility of this situation or limiting structure.

Known as follows by EP1440761A1 again: in order to form exhaust duct, the edge configuration of at least one in the sheet material that makes to need to weld has tooth.But this needs special instrument and in order to see preventing after that described tooth must repair the weld seam of generation.

Utility model content

Therefore the purpose of this utility model is, a kind of optional design of sheet material is provided, and this design carries out without butt welded seam the member that larger finishing just can solve exhausting problem and be suitable for equally rigidity simultaneously on the one hand.

The bodywork component for motor vehicle that this object is explained by the utility model is achieved, this bodywork component is made up of at least two metallic plates that connect by laser weld in lug area, metallic plate has radius of curvature in lug area, and two metallic plates have contrary radius of curvature in the region of laser weld.

Preferably, at least one metallic plate is zinc-plated metallic plate.

Preferably, wherein a metallic plate is configured to supporting member.

Preferably, supporting member is tubular support.

Preferably, tubular support is hydroforming part.

Preferably, supporting member is made up of steel.

Preferably, the appearance sheet material that one of two metallic plates are vehicle body.

Preferably, bodywork component is frame structure.

The part of the sidewall that preferably, frame structure is vehicle body.

As follows according to the utility model understanding: if radius of curvature is contrary, in welding process regardless of being the quality that member error or automatic welding machine error do not affect laser welded seam.In addition, not there is not or only occur with weakening exhausting problem, because now all the time can exhaust by " opening " that formed by contrary radius of curvature.

Radius more or less can be given freely in advance, and the scheme that makes like this design and processing optimize becomes possibility.Radius of curvature needn't relate to whole member, but naturally only relates to the region that needs welding.Outside this little region, member can have any shape.

Therefore only need in the region between hold-down roller and laser instrument, ensure described radius of curvature in principle.

But for the variation of member is carried out to balance, recommend as follows: radius of curvature is equally correspondingly present in outside this region or outside this region extends, like this because each member of reason of the opening causing by contrary radius of curvature or metallic plate stick together and form exhaust outlet to be suitable for the mode of welding all the time simultaneously.

If radius coincidence formula 1/22mm < 1/R1+1/R2 < is 1/90mm, realize good especially result.

This formula is relevant to the standard welding head using in auto industry.Meanwhile, radius depends on the distance of hold-down roller to laser instrument.If the distance change between compacted position and laser instrument, formula must correspondingly be adjusted.Conventionally the distance between hold-down roller and laser weld head is 5 to 6mm.

By like this existing two circular geometry in the region of hold-down roller work in coordination and approximately 5 to the laser beam working in the distance of 6mm, automatically produce required, the gas delivery space in welding conditions just in time.This means: this gas delivery space can be not excessive to causing laser instrument that the material of need welding is cut off.In contrast, too small gap causes upwards exhaust.

Central idea of the present utility model is particularly suitable for member, one of the two metallic plates metallic plate of high rigidity that design determines and another piece metallic plate soft metallic plate that design determines of serving as reasons of serving as reasons in these members.The problem herein existing: the metallic plate of high rigidity can be in welding process compacted roller " movement ", only have soft sheet material to be pulled to or to press to the sheet material of rigidity.

In this case, the metallic plate of high rigidity can be also the parts of tubulose.Particularly it can be hydroforming part, i.e. the parts of a high-intensity and high rigidity of making by hydroforming.

This is often the frame structure of motorcar body.

Can consider that any metal kernel blank of welding that needs is as sheet material.Parts must be also smooth.

Brief description of the drawings

Further feature of the present utility model and thin portion are derived from below unique the description of the drawings, shown in this accompanying drawing, are being that entirety of the present utility model is labeled as 1 the member schematic cutaway view in the process of welding zinc plated sheet metal 2,3.

Detailed description of the invention

The first plate 2 is to have the first radius R 1 in region front truck door pillar, framework curb girder that make by hydroforming, hollow and weld seam afterwards of car.

The second plate 3 is to have the second radius R 2 in the sidewall paneling of front truck door pillar of car and the region of weld seam afterwards, and this radius is contrary with the first radius R 1.

Due to curb girder 2 be high rigidity and plate 3 is soft on the contrary, the free end of the second plate 3 or its flange is pressed to crossbeam 2(with reference to dotted line by a hold-down roller 4 in carrying out welding process by laser instrument 5).

Two parts 2,3 form a gas delivery space 6 by contrary radius of curvature R 1, R2, although there is like this zinc coat also not produce exhausting problem.

Self-evident, the geometry herein illustrating is exemplary and each metallic plate particularly can have other shape beyond welding region.

Claims

1. the bodywork component for motor vehicle, described bodywork component is made up of at least two metallic plates that connect by laser weld in lug area, described metallic plate has radius of curvature in described lug area, it is characterized in that: two metallic plates have contrary radius of curvature in the region of laser weld.

2. bodywork component according to claim 1, is characterized in that: at least one metallic plate is zinc-plated metallic plate.

3. bodywork component according to claim 1, is characterized in that: wherein a metallic plate is configured to supporting member.

4. bodywork component according to claim 3, is characterized in that: described supporting member is tubular support.

5. bodywork component according to claim 4, is characterized in that: described tubular support is hydroforming part.

6. according to the bodywork component described in any one in claim 3 to 5, it is characterized in that: described supporting member is made up of steel.

7. bodywork component according to claim 1, is characterized in that: the appearance sheet material that one of described two metallic plates are vehicle body.

8. bodywork component according to claim 1, is characterized in that: described bodywork component is frame structure.

9. bodywork component according to claim 8, is characterized in that: the part of the sidewall that described frame structure is vehicle body.