Browse Prior Art Database

XY Positioning System Control

IP.com Disclosure Number: IPCOM000076807D
Original Publication Date: 1972-Apr-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Ward, KA: AUTHOR

Abstract

The drawing shows a pattern of conductive elements 2 formed on an insulating support 3 and interconnected through a ground plane 4. A conductive probe 5 rides on pattern 2 or support 3 and is driven by an X-Y positioning apparatus, represented schematically by arrows in the drawing. As probe 5 is stepped from point-to-point on pattern 2, a machine tool, not shown, is similarly moved in X and Y directions by synchronous motors 7 and 8. Motor 7 or 8 is energized from a bus 9, 10 according to a logic circuit that stops the motor when probe 5 contacts a pattern element 2. The machine tool includes switches S20 that opens when an operating head of the machine tool is fully raised and S21 that is closed when the head is fully lowered. S9 or S10 operate as the tool moves into either X dimension limit position.

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XY Positioning System Control

The drawing shows a pattern of conductive elements 2 formed on an insulating support 3 and interconnected through a ground plane 4. A conductive probe 5 rides on pattern 2 or support 3 and is driven by an X-Y positioning apparatus, represented schematically by arrows in the drawing. As probe 5 is stepped from point-to-point on pattern 2, a machine tool, not shown, is similarly moved in X and Y directions by synchronous motors 7 and 8. Motor 7 or 8 is energized from a bus 9, 10 according to a logic circuit that stops the motor when probe 5 contacts a pattern element 2. The machine tool includes switches S20 that opens when an operating head of the machine tool is fully raised and S21 that is closed when the head is fully lowered. S9 or S10 operate as the tool moves into either X dimension limit position.

When probe 5 contacts a pattern element 2, it completes a circuit through a relay coil C1 which operates through intervening logic shown in the drawing to open S13. S20 and S21 in this intervening logic respond to the lowering and subsequent raising of the machine tool head, to de-energize C13 and thereby restore power to the motors at the end of the operation.

The circuit steps probe 5 along the X direction to a limit position signalled by S9 or S10 and moves it in the Y direction to the next row, and reverses in the X direction. The X motor direction is controlled by S6 operated by a latch made up of S5, S6, S9, S10 and C6. The latc...