Browse Prior Art Database

Lamination Punch Method

IP.com Disclosure Number: IPCOM000096586D
Original Publication Date: 1963-Aug-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Orlando, AW: AUTHOR

Abstract

Vinyl tile 10, or other material having a viscosity of about 97 durometers (plus or minus about 5%), is laid on pressure block 20 of a hydraulic press. Sheet metal stock 11, such as silicone steel 0.007 inch thick, is placed centrally on tile 10. Die 12, having the shape of a desired finished stamping, is placed centrally on stock 11. For example, die 12 can be made of tool steel 0.093 inch thick to punch a lamination for an electric motor.

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Lamination Punch Method

Vinyl tile 10, or other material having a viscosity of about 97 durometers (plus or minus about 5%), is laid on pressure block 20 of a hydraulic press. Sheet metal stock 11, such as silicone steel 0.007 inch thick, is placed centrally on tile
10. Die 12, having the shape of a desired finished stamping, is placed centrally on stock 11. For example, die 12 can be made of tool steel 0.093 inch thick to punch a lamination for an electric motor.

Retaining ring 13 is also laid on stock 11 concentrically about die 12. Ring 13 can be made of the same metal as die 12 and have the same thickness. Ram 14 of the hydraulic press is moved downwardly so that its flat surface engages the upper surfaces of die 12 and ring 13 to force them through stock 11 into the vinyl tile 10. Then, ram 14 is moved upwardly and stock 11 has been formed into a finished stamping identical in form to die 12. Then, a new stock sheet 11 and tile 10 can be used with die 11 and retaining ring 13 to make another stamping, etc.

The vinyl tile can be the usual type used in constructing floors, which is 0.08 inch thick. The ring can have a diameter that spaces it about three-eighths of an inch from the edge of the die. The ring controls the outward flow of the vinyl tile during the punching operation.

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