Browse Prior Art Database

Remote Controlled X and Y Positioner

IP.com Disclosure Number: IPCOM000095137D
Original Publication Date: 1965-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Godat, JJL: AUTHOR

Abstract

The mechanism is capable of positioning supporting table 1 to within 0.0001 inch of the desired location in the horizontal plane. Micrometer screw 2 is axially advanced by driver 3 that is coupled to motor 4 by shaft 5. Screw 2 is threaded into micrometer nut 6 which is held in position by clamp 7. Driver 3 is double-slotted, providing a slidable channel for T-head 8 of screw 2. The opposite end of screw 2 bears against slide 9 which is spring loaded actually against screw 2. The left assembly is similar to the right with the exception that bell crank 10 is added to produce sliding motion orthogonal to that of the left assembly. The opposite end of motor shaft 5 is coupled, through a 100:1 reduction, to a counter 11 having electrical readout 12.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 89% of the total text.

Page 1 of 2

Remote Controlled X and Y Positioner

The mechanism is capable of positioning supporting table 1 to within 0.0001 inch of the desired location in the horizontal plane. Micrometer screw 2 is axially advanced by driver 3 that is coupled to motor 4 by shaft 5. Screw 2 is threaded into micrometer nut 6 which is held in position by clamp 7. Driver 3 is double-slotted, providing a slidable channel for T-head 8 of screw 2. The opposite end of screw 2 bears against slide 9 which is spring loaded actually against screw 2. The left assembly is similar to the right with the exception that bell crank 10 is added to produce sliding motion orthogonal to that of the left assembly. The opposite end of motor shaft 5 is coupled, through a 100:1 reduction, to a counter 11 having electrical readout 12.

Table 1 is initially indexed to a desired zero position by adjusting nut 6. The clamp 7 is loosened to permit nut 6 to be manually rotated. The coaction of the external and internal threads of nut 6 with the corresponding threaded sections of clamp 7 and screw 2 provide a fine vernier adjustment of table 1.

For example, when nut 6 is provided with eighty threads per inch external pitch and one hundred threads per inch internal pitch, the advance of screw 2 is controlled by the thread differential to within 0.0025 inch for each turn of nut 6. Table positioning is accomplished by controlling the stopping position of motor 4 with information feed to counter 11. Where the convenience of re...