Real time straightness deviation measuring and compensation devi

Details Real time straightness deviation measuring and compensation devi Real time straightness deviation measuring and compensation devi

1992-03-24

1993-09-14

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

31856824, 318577, 318687, G05B 1937, G05B 1941

Patent

active

052452646

ABSTRACT:
A real time straightness deviation measuring and compensation device for a machine tool that automatically and continuously compensates for bed way deviation from a truly straight line relative to a workpiece. A wire, parallel to the workpiece or axis of workpiece rotation and perpendicular to the direction of machine tool compensation is utilized as a straightness reference, with the wire being stretched in the direction of machine tool carriage travel and supported on either end by weights for gravity induced straightness. A position indication device, such as a laser micrometer, is attached to the machine tool carriage and positioned around the reference wire in order to read the position of the wire relative to the machine tool carriage during real time operation. An electronically controlled servo motor attached to a machine tool supported on the carriage automatically adjusts the machine tool to compensate for carriage deviation caused by bed way deviation relative to the straight reference wire.

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