Micro-positioning tool post

Details Micro-positioning tool post Micro-positioning tool post

1989-03-13

1991-01-22

Meislin, D. S.

Turning

Lathe

Carriage feed

82158, 318561, B23B 2100

Patent

active

049861506

ABSTRACT:
A micro-positioning tool post comprises a flexible support which performs parallel motion and supports a tool, a piezoelectric actuator for displacing the flexible support, a displacement sensor for detecting displacement of the tool, and a state observer for receiving the voltage applied to the piezoelectric actuator and the output from the displacement sensor as input, producing an estimate of a velocity signal and feeding back the estimate to the voltage applied to the piezoelectric actuator. The feedback control greatly improves the dynamic stiffness of the tool post while also providing excellent static characteristics, dynamic characteristics and static stiffness.

REFERENCES:
patent: 4019015 (1977-04-01), Hassan et al.
patent: 4451892 (1984-05-01), McMurty
patent: 4669359 (1987-06-01), Shiba
patent: 4672550 (1987-06-01), Winterbottom
patent: 4741231 (1988-05-01), Patterson et al.
patent: 4817007 (1989-03-01), New

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