Programmable magnetic repulsion punching apparatus.

摘要

The punch appts. has a planar element of highly conductive material mounted on normal to the direction of movement. A planar coil is fixedly mounted on the frame coaxially with punch element and adjacent to the planar element. A carriage positions a thin sheet of material to be punched in the path of the punch element and moves the sheet in direction transverse to the axis of the punch element. The coil is energised with a pulse of electrical energy for generating flux linting the conductive planar element to repel the planar element from the coil. The punch element is rebound. A unit selectively moves the carriage to specifically locate the sheet relative to the punch element.