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Grooving Ultrasonic Bonding Tips

IP.com Disclosure Number: IPCOM000091089D
Original Publication Date: 1969-Oct-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Eddy, MR: AUTHOR

Abstract

The uppermost drawings show an ultrasonic bonding tip having a U-shaped groove. Rounded portions 1 end 2 are necessary in order to prevent wire damage. Because of the small size of the ultrasonic bonding tip, it is difficult to obtain a tip grooved with the required shape. The device in the bottom drawing is capable of suitably grooving ultrasonic bonding tips.

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Grooving Ultrasonic Bonding Tips

The uppermost drawings show an ultrasonic bonding tip having a U-shaped groove. Rounded portions 1 end 2 are necessary in order to prevent wire damage. Because of the small size of the ultrasonic bonding tip, it is difficult to obtain a tip grooved with the required shape. The device in the bottom drawing is capable of suitably grooving ultrasonic bonding tips.

Ultrasonic bonding tip 3 is rotatably mounted in member 4. Tip 3 is positioned in member 4 in a manner shown by the dotted lines. Positioned directly above tip 3 is abrading wire 5 which is held taut by member 6. The latter slides along rail 7 in a horizontal mode. Rail 7 is adjustable in frame 8 so that it allows member 6, carrying abrading wire 5, to be lowered down to the top surface of tip 3.

In operation, tip 3 is held firmly in member 4 in a vertical position as in the drawing. Rail 7 is then lowered so that abrading wire 5 comes in contact with the top surface of tip 3. Member 6 is then slid along rail 7 so that abrading wire 5 cuts into the surface of tip 3. Member 6 is moved along rail 7 either by hand or by the use of a motor. After a groove is placed in tip 3, it is rotated to the A position shown. Member 6 is then moved along rail 7 so that abrading wire 5 cuts a rounded corner in the groove previously placed in tip 3. Tip 3 is then rotated to position B and abrading wire 5 again is activated so as to round the other side of the previously created groove abradin...