Process and apparatus for finishing electronic device

Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof

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51413, 51418, 51215UE, 414 32, 414 96, B24C 100, B24C 308

Patent

active

045612196

ABSTRACT:
A machine for finishing lead frames for integrated circuits, including a first rotatable turntable, and a plurality of first cassettes mounted thereon in angularly spaced relationship, each first cassette supporting a plurality of frames in vertically stacked relationship; a second rotatable turntable disposed a selected distance from the first turntable, and a plurality of second cassettes mounted on the second turntable in angularly spaced relationship, each second cassette accommodating a plurality of frames in vertically stacked relationship; a horizontally elongated transfer device extending from tangentially adjacent the first turntable to tangentially adjacent the second turntable for moving individual frames therebetween; a blasting chamber associated with the transfer device for subjecting the frames to a blasting media; a first mechanism for transferring frames from the first cassette onto the upstream end of the transfer device; and a second mechanism for transferring the frames from the downstream end of the transfer device into the second cassette.

REFERENCES:
patent: 3360100 (1967-12-01), Seragnoli
patent: 3771670 (1973-11-01), Napoleone et al.
patent: 4008890 (1977-02-01), Pulda
patent: 4068767 (1978-01-01), Tippetts
patent: 4195961 (1980-04-01), Waiblinger
patent: 4390098 (1983-06-01), Wilgus et al.
Electronic Packaging and Production article, Nov. 1980, pp. 147-148.
Fuji Seiki catalog LH-16T and accompanying descriptive pp. P6 to P8.

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