Title:
METHOD FOR CONTROLLING AN INTERMITTENTLY OPERATING SCREW TOOL
Document Type and Number:
WIPO Patent Application WO/2003/013797
Kind Code:
A1
Abstract:
The invention relates to a method for controlling an intermittent screw process. The inventive method is first carried out in a torque mode in which the torque is continuously measured. When a pre-torque (M¿F?) is achieved, the method is carried out in an angle of rotation mode wherein the angle of rotation is measured. The angle of rotation ($g(a)) is incremented at each lift, based on the angle of rotation $g(a) = 0 (corresponding to the pre-torque (M¿F?)). The torque (M¿HE?) which is reached at the end of the lift is stored. At the following lift, the measurement of the angle ($g(a)) is only begun when the torque (M¿HE?) at the end of the previous lift is reached again. The screw process is ended when a target angle ($g(a)¿Z?) is reached.
Inventors:
WAGNER PAUL-HEINZ (DE)
SITTIG ULF (DE)
SITTIG ULF (DE)
Application Number:
PCT/EP2002/008386
Publication Date:
February 20, 2003
Filing Date:
July 27, 2002
Export Citation:
Assignee:
WAGNER PAUL-HEINZ (DE)
SITTIG ULF (DE)
SITTIG ULF (DE)
International Classes:
B25B21/00; B25B23/14; (IPC1-7): B25B23/14; B25B21/00
Foreign References:
| EP0340999A1 | 1989-11-08 | |||
| US5581042A | 1996-12-03 | |||
| DE3230642A1 | 1984-02-23 | |||
| DE19845871A1 | 1999-04-15 | |||
| DE19639566A1 | 1998-04-23 |
Attorney, Agent or Firm:
Selting, Günther (Deichmannhaus am Dom Bahnhofsvorplatz 1 Köln, DE)
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