Reconfigurable workholding fixture

A workpiece holding fixture comprising:

• a chuck plate of ferromagnetic material, said chuck plate having a flat surface and being magnetizable and de-magnetizable on command,
• a guide rail fixed to said chuck plate and at least one workpiece locating post with a workpiece locating surface, said post being attached to said guide rail,
• at least one workpiece support member, said support member comprising a post with a workpiece engaging post surface, said post being carried upright on a base of ferromagnetic material, said base being adapted for magnetic attachment to said chuck plate surface at a predetermined location, and
• at least one workpiece clamp member comprising a clamp arm carried on an upright post that is carried on a base of ferromagnetic material, said clamp post base being adapted for magnetic attachment to said chuck plate surface at a predetermined location, whereby
• each said support member and each said clamp member is located on said chuck plate surface so that a workpiece can be held by said clamp(s) against said post surface(s) in spaced relation to said chuck plate surface for work on said workpiece.

A workpiece holding fixture comprising;

• a selectively magnetizable and de-magnetizable chuck plate of ferromagnetic material, said chuck plate having a flat surface with x-y coordinates for the magnetic attachment of workpiece supporting, locating and clamping elements;
• a guide rail attached to said chuck plate and at least one workpiece locating post with a workpiece locating surface, said post being attached to said guide rail;
• at least one workpiece support member, said support member comprising a base of ferromagnetic material, said base being adapted for magnetic attachment to said chuck plate surface at a predetermined x-y coordinate location;
• and
• at least one workpiece clamping member, said clamping member comprising a base of ferromagnetic material, said base being adapted for magnetic attachment to said chuck plate surface at a predetermined x-y coordinate location, a hydraulic pump carried on said base, and a hydraulically actuatable clamping member carried on said base, said base comprising a hydraulic fluid channel between said pump and said clamping member.