Apparatus for perforating a workpiece

US4407614A · kind A · utility

Assignee

• Muhr und Bender · DE

Inventors

• Richard Muhr · Attendorn, DE
• Karl Schink · Attendorn, DE

Key dates

• Filing date: Jan 9, 1981
• Grant date: Oct 4, 1983
• Expiry date: Jan 9, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T408/385
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A workpiece such as a steel profile to be perforated at predetermined distances from a longitudinal reference surface thereof is moved past a plurality of perforating tools, such as punching or drill presses, mounted on a main slide and associated with respective sensors carried on an ancillary slide, the two slides being provided with a rack-and-pinion coupling working into a position detector. Each sensor comprises two sensing heads movable, upon selective activation prior to operation of the corresponding tool, transversely to the workpiece path with a slight relative offset; the ancillary slide is displaced until the reference surface is detected by one--but not both--sensing heads whereupon a corrective motion is imparted to the main slide under the control of the position detector.