公开(公告)号：DE4306282A1

公开(公告)日：1994-09-15

申请号：DE4306282

申请日：1993-03-01

Applicant: EMHART INC

Inventor： HOFMANN JOERG ,  KNETSCH HARALD ,  LIEBICH KURT ,  OPPER REINHOLD ,  WIESLER HANS ,  BAUER ALOIS

IPC: B23B43/00 ,  B23K9/20 ,  B23K20/24 ,  B23P23/04 ,  B23Q1/72 ,  B23Q39/02 ,  B23K9/235 ,  B23K37/00

Abstract: Process for welding a weld-in part in a weld point comprising a metal plate and a metal covering lying thereon with two tools of which one is formed by a welding head and the other by a drill for preparing the weld point by a drilling process. The drill attached to a revolving device initially in one operating position, by means of a lifting motor which can be moved in a controlled manner between a return position and a machining end-position and vice versa, performs the process at least until the metal plate is drilled (machining end-position) in preparation of the weld point. By pivoting of the revolving device, a welding head arranged on the revolving device and equipped with the weld-in part is then brought into an operating position above the prepared weld point to perform welding, meanwhile the drill is coupled to the lifting motor when the welding head is coupled to the lifting motor when the drill is uncoupled to perform welding on completion of the drilling process. Drill and the welding head are each set aside in their return position on a rest shoulder after pivoting of the revolving device, the welding head being equipped with a weld-in part in the rest position and the revolving device pivoting the drill or the welding head into the respective operating position from the rest position.