US Patent:
20020148878, Oct 17, 2002
Inventors:
Randy Honeck - Maple Grove MN, US
Christopher Osdick - Lindstrom MN, US
Robert Fawkes - Maplewood MN, US
International Classification:
B23K001/06
B23K005/20
Abstract:
The method of controlling a linear vibration welding apparatus, in accordance with the invention, may comprise the steps of: fastening a first workpiece portion in a fixed position; fastening a second workpiece portion to a reciprocating member; energizing a first single winding magnet with direct current power to create a magnetic field; sensing a location of the reciprocating member with respect to a zero point; and energizing a second magnet when the reciprocating member has crossed the zero point when moving towards the first magnet. The linear vibration welding apparatus in accordance with the invention may comprise: a frame; a flexure array; a first magnet assembly; a second magnet assembly; a digital controller; and direct current amplifiers for powering the magnet assemblies.