Browse Prior Art Database

Expanded Indexer for Dicing Saw

IP.com Disclosure Number: IPCOM000089335D
Original Publication Date: 1977-Oct-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 3 page(s) / 54K

Publishing Venue

IBM

Related People

Luecke, FS: AUTHOR [+2]

Abstract

The expanded indexer X allows the dicing saw, comprising the rotary sharp tipped saw wheel 10, to cut a plurality of unequally spaced striae 12a-12g in a workpiece 14 that is fixed on a reciprocable table 16, as table 16 is reciprocated in directions B beneath wheel 10, with carrier 18 for wheel 10 being moved by electrical stepping motor 20 in direction A in order to provide striae 12a-12g across workpiece 14.

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Expanded Indexer for Dicing Saw

The expanded indexer X allows the dicing saw, comprising the rotary sharp tipped saw wheel 10, to cut a plurality of unequally spaced striae 12a-12g in a workpiece 14 that is fixed on a reciprocable table 16, as table 16 is reciprocated in directions B beneath wheel 10, with carrier 18 for wheel 10 being moved by electrical stepping motor 20 in direction A in order to provide striae 12a-12g across workpiece 14.

The expanded indexer X is intended for attachment onto the model A-25 Automatic Indexer For Dicing Saw, manufactured by Motion Dynamics Research Incorporated of Edison, N.J. The automatic indexer includes dicing saw control logic 22 operatively connected with motor 24 that functions to reciprocate table 16 in directions B. Control logic 22 is connected with stepping motor driver 25 that controls electrical stepping motor 20. A thumb wheel switch 26, settable in a plurality of positions indicating certain fixed spacings between striae cut by wheel 10, is effectively connected between control logic 22 and motor driver 25. The indexer is effective to reciprocate table 16 and thus workpiece 14 beneath cutting wheel 10, and motor driver 25 is effective on motor 20 to move carrier 18 a fixed distance in direction A after each reciprocation of table 16 corresponding to the setting of thumb wheel switch 26. A plurality of equally spaced striae are thus cut into workpiece 14 by wheel 10 during the normal operation of the dicing saw and indexer.

The expanded indexer comprises six thumb wheel switches 28a-28f each settable to an indication of the spacing from a previous stria of a succeeding stria cut into workpiece 14 by wheel 10. Switches 28a-28f are connected through OR circuits 30 and 32 to motor driver 25. A switch 34 is in series with thumb wheel switch 26 for cutting out thumb wheel switch 26 when any of switches 28a-28f is effective.

A stepping relay 36, comprising a wiper arm 38 and a plurality of wiper contacts 40a-40f, is provided for sequentially connecting thumb wheel switches 28a-28f...