DESIGN AND EXPERIMENTAL EXAMINATION OF NEW TYPE OF ELECTRO-PERMANENT MAGNETIC CHUCK

Jan Bydžovský – Mojmír Kollár – Klement Ondreička – Jozef Paľa

   The so-called electro-permanent magnetic chucks are using two types of permanent magnets with a rather different coercivity and a driving coil to change the remanent state only of the weaker of them. The two opposite stages of the chuck, clamp and release, are attained by a single current pulse. An optimized design of magnetic circuit, for effectively switching the magnetic flux in chuck, in steady-state approximation and comparison with experimental results in dynamic operation are presented.

Keywords: magnetic chuck, holding device, permanent magnet, magnetic circuit, 2D field solution

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