Browse Prior Art Database

Coil Design for Magnetic Repulsion Punch

IP.com Disclosure Number: IPCOM000101868D
Original Publication Date: 1990-Sep-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Frankeny, JA: AUTHOR [+2]

Abstract

Disclosed is a new coil design that gives maximum force and is simple to manufacture and cool.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Coil Design for Magnetic Repulsion Punch

       Disclosed is a new coil design that gives maximum force
and is simple to manufacture and cool.

      Referring to the figure, the coil design is a tight spiral of
flat conductor 4 made with copper strip Z .002 inch thick.  A very
thin insulator 5 is applied to one side of the copper.  A heavy
copper rod 2 Z .080 inch diameter is welded to the strip, and it is
tightly wound to the desired number of turns with the uninsulated
surface out.  The outer layer can be soldered to itself and outer
conductor post 1 attached.  The coil is vacuum potted, and the
working end 6 is ground flat and back etched to remove smear.

      The back side of the coil 3 is used as the heat transfer
surface.  With 80% copper exposed to the coolant, the coil can handle
high power dissipation.

      This design allows for maximum inductance/unit volume, minimum
resistance, high heat transfer surface for cooling, easy manufacture,
and low connection resistance/inductance.