Two axis drive for stage

Details Two axis drive for stage Two axis drive for stage

1982-08-11

1985-07-09

Shoop, William M.

Electricity: motive power systems

Positional servo systems

318594, G05B 1118

Patent

active

045284903

ABSTRACT:
Stage 12 is moved into position by traction of capstan 38 on bar 42 which is pivoted under intermediate plate 20, and by traction on bar 66 which is pivoted under stage plate 12. Bar 42 is pressed against motor driven capstan 38 by pressure rollers 44 and 46. The pressure rollers are mounted on a rotatable yoke 50 so that the bar can freely swing and only applies longitudinal forces to the plate. This same structure is provided for drive bar 66.

REFERENCES:
patent: 4223257 (1980-09-01), Miller

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