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http://dx.doi.org/10.5781/KWJS.2008.26.6.059

Study on Laser Welding of Automotive Modular Steering Gear Housing by using Multi-Axis Control  

Kim, Jung-Do (Division of Marine System Engineering, Korea Maritime University)
Lee, Chang-Je (Graduates School, Korea Maritime University)
Publication Information
Journal of Welding and Joining / v.26, no.6, 2008 , pp. 59-66 More about this Journal
Abstract
Recently, automobile parts progress with modularization, which a great many allied products are modularized. Therefore, the purpose of this study is to develope modular housing for modularization of steering gear. Generally, steering gear housing is composed of valve housing and rack housing, it is important to combine two housings. However, housing having the pipe shape is very sensitive to welding distortion, and welding trajectory is very complicated. In order to solve this subject, cooperative control by using robots was constructed. Further, we developed the dedicated system to suit modular housing based on it, and applied laser welding to there. Moreover, welding speed was controlled in the rapid curve section so that the defect in trajectory of housing was reduced to obtain sound weldment. Accordingly, produced housing by this way is presented enough withstanding pressure to $100kg/cm^2$, and roundness and straightness are measured about 10/100 and 0.9/100 respectively.
Keywords
Modular housing; SAE1020 steel; Cooperative control system; Dedicated system; Laser welding; Welding speed control; Roundness;
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  • Reference
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