Robert Bosch

Sipke Koopmans

Arjen Brandsma

Jens Burghaus

Giel Rompen

Rob Mutsaers

Ronald Cornelissen

Marco Op Den Velde

Bert Pennings

Corijn Snippe

The present disclosure concerns a process for the blanking of metal parts () from a&#x2014;layered basic material () composed of a number of mutually stacked individual layers () placed and clamped between a blanking die () and a blank holder () of a blanking device (), wherein a blanking punch () of the blanking device () is moved relative to the blanking die () to cut and separate the metal parts () from the basic material (). According to the present disclosure, such multi-layer blanking process is carried out in two successive stages (I, II), whereof a first stage (I) entails the punching of holes () by a first blanking punch () without applying a counter punch and whereof a second stage (II) entails the blanking of the metal parts () by a second blanking punch () while being supported by a counter punch ().

Metal parts blanking process for rotor and stator of an electric motor

Disclosed is a process for the blanking of metal parts, in which a multi-layered basic material with a number of mutually stacked, preferably essentially identical, individual layers is placed and clamped partly between a blanking die and a blank holder and partly between a blanking punch and a counter punch and wherein the blanking punch and the counter punch that are moved relative to the blanking die and the blank holder over a distance corresponding to at least a thickness of the multi-layered basic material whereby several blanked parts are cut and separated from the multi-layered basic material.

Process for blanking of metal parts

Growing community of inventors

Tilburg, Netherlands

Sipke Koopmans