Precision device for reducing errors attributed to temperature c

Details Precision device for reducing errors attributed to temperature c Precision device for reducing errors attributed to temperature c

1986-05-02

1987-11-10

Whitehead, Harold D.

Stone working

Sawing

Rotary

5116573, B28D 104

Patent

active

047050160

ABSTRACT:
A precision device including a holding mechanism for holding an object and a supporting mechanism for supporting an operating element, one of which is movable in a predetermined direction. The precision device includes a detecting device for detecting the amount of movement of one of the holding holding and supporting mechanisms in the predetermined direction, and the detecting device includes a scale formed of a material having a coefficient of linear expansion, in a temperature range of -20.degree. to 100.degree. C., of not more than 10.times.10.sup.-7 /.degree.C. as an absolute value. The precision device further includes a detecting device for detecting the amount of thermal expansion of at least a part of the supporting mechanism in the predetermined direction.

REFERENCES:
patent: 2664787 (1954-01-01), Plimmer
patent: 2956344 (1960-10-01), Rantsch
patent: 3427906 (1969-02-01), Berly
patent: 4564000 (1986-01-01), Stern et al.
"Dicing Saw"--Disco Abrasive Systems, Ltd.

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