An electro permanent magnetic work holding system having additional solenoids positioned within the poles of the monolithic working face.

摘要

The present invention relates to an Electro Permanent Magnetic work holding system having additional solenoid(s) positioned within the main pole(s) of the working face. Conventional double magnet EPM work holding systems for ferromagnetic work pieces suffer from unsatisfactory control of flux affecting working operations and incidence of residual magnetism in work pieces. The present invention aims at overcoming these difficulties and provides an Electro Permanent work holding system characterized in that the said system comprises a work holding face (1), a base plate (2), a set of reversible magnets (5), solenoid(s)for controlling reversible magnets (3), main pole(s) (4) positioned above the reversible magnets, a set of non-reversible permanent magnets (6), set of additional solenoid(s)(7) within the main poles of the working surface and magnetic insulator (8). These set of additional solenoids positioned within the main poles of the working face facilitates better control of flux for proper holding and also demagnetization of the work piece as and when needed.