Attaching device, attaching arrangement and method for attaching an object to be worked to a working base

摘要

The invention relates to an attaching device, an arrangement and a method for attaching an object to be worked to a working base. The attaching device comprises: a first holder in the first end of the attaching device for attaching the attaching device to the working base or to another attaching device or to the object to be worked; a second holder in the second end of the attaching device for attaching the attaching device to the working base or to another attaching device or to the object to be worked; and a controller for controlling the holding forces produced by the first and second holders.

主权项

1. A magnet, wherein the magnet comprises
a shell and a centre, which are arranged to guide a magnetic flux to a piece to be grabbed, which centre is arranged to be mobile in relation to rest of the magnet, in order to close and open a circuit of the magnetic flux, a permanent magnet for forming a magnetic field and thereby for keeping the centre in connection to the rest of the magnet, and an electric magnet coil arranged at least partly around the centre for partly turning off the magnetic flux provided by the permanent magnet, when necessary, wherein an edge of the shell meant to be in contact with the piece to be grabbed is bevelled to be thinner.