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Process and Tool for Repairing Damaged Locating Slots

IP.com Disclosure Number: IPCOM000039183D
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Mesley, NN: AUTHOR

Abstract

A method of repairing damaged locating slots in signal cores is accomplished using a specially designed tool in the following manner. A signal core 1 is seen in the drawing with a damaged locating slot 2. Its repair is accomplished by placing the signal core 1 over the locating slot pin 3 of a base plate 4. The base plate 4 contains four locating slot pins corresponding to the four locating slots on the signal core, but only one slot and pin are seen. A partially cured epoxy prepreg sheet 5 is placed over slot pin 3 as it protrudes above slot 2 of signal core 1. A sheet of copper foil 6 is similarily placed over the slot pin 3. A release sheet (not seen) is then placed over the copper foil 6.

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Process and Tool for Repairing Damaged Locating Slots

A method of repairing damaged locating slots in signal cores is accomplished using a specially designed tool in the following manner. A signal core 1 is seen in the drawing with a damaged locating slot 2. Its repair is accomplished by placing the signal core 1 over the locating slot pin 3 of a base plate 4. The base plate 4 contains four locating slot pins corresponding to the four locating slots on the signal core, but only one slot and pin are seen. A partially cured epoxy prepreg sheet 5 is placed over slot pin 3 as it protrudes above slot 2 of signal core 1. A sheet of copper foil 6 is similarily placed over the slot pin 3. A release sheet (not seen) is then placed over the copper foil 6. A heated pressure shoe 7 is actuated downward over the slot pin 3 where heat and pressure cure the epoxy prepreg sheet 5 and seal it to the copper foil 6. After sealing, the shoe 7 is removed from slot pin 3. The release sheet prevents the epoxy sheet 5 from sticking to the shoe
7. A release agent spray is used to prevent signal core 1 from sticking to the pin 3 and the base plate 4. The panel ejector 8 is then engaged by air to lift the signal core 1 off the pins 3 of the base plate 4 so that the core 1 can be removed. An epoxy sealant may be used to replace the epoxy prepreg.

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