Modine Manufacturing Company

Festool Gmbh

Michael Higelin

Stefan Tulodziecki

Mutasem Rabah

Ulrich Kasper

Florian Beck

Daniel Borst

Philipp Oehler

Nicolai Knecht

Bernd Fleischmann

Erik Schüssler

Manuel Bäuerle

David Grimm

Timo Bayer

Kai Ondratschek

A disc tool for a processing machine for grinding and/or polishing a workpiece (W); wherein the disc tool (A,B,B) has a carrier () for attachment to an output () of the processing machine (); wherein a cushion element (A,B,C) made of elastic material and a retaining wall element (A,B,C,D) for retaining the cushion element (A,B,C,) are arranged on the carrier (); wherein the retaining wall element (A,B,C,D) is held on the carrier () by means of retaining bolts (); wherein retaining bolt passage openings () of the retaining wall element (A,B,C,D) extending through retaining mounts (), of the carrier () are accommodated along bolt sections () of the retaining bolts () extending along the bolt longitudinal axes (BL), and the retaining wall element (A,B,C,D) is held between bolt heads () of the retaining bolts () and the carrier (); and wherein an adhesive layer () is arranged on a side of the retaining wall element (A,B,C,D) opposite the carrier (), on which adhesive layer a processing means () for grinding and/or polishing the workpiece (W) can be releasably attached to the disc tool (A,B,B). The adhesive layer () has recesses () assigned to the bolt heads ().

Disc tool

Abrasive sheet holder

The invention relates to a method for producing slots () in a tube wall (), wherein a single die plate () provided with notches () is pushed into the tube () and punches () arranged in a row pierce the tube wall from the outside and in the process produce the slots (), whereupon the die plate () is rotated about its longitudinal axis out of a working position and into a withdrawal position and is pulled out of the tube (). Economical production of the slots in tubes having different cross-sectional shapes is achieved according to the invention in that during the slotting operation the tube wall () is gripped from the outside and held and is stabilized from the inside against two opposing support strips () by way of the die plate (). A slotting tool according to the invention is characterized in that a supporting tool () engages around the circumference of the tube () and in that the die plate (), as seen in the cross-sectional direction (radial direction), has two narrow sides () which are arranged at opposite ends of a longest cross-sectional extent () of the die plate (), wherein the die plate () has two axially extending support strips () between the narrow sides () and the inner side of the tube wall ().

Method for producing slots in a tube wall and slotting tool

Growing community of inventors

Köngen, Germany

Michael Higelin