Fine feed system

Details Fine feed system Fine feed system

1984-06-13

1986-03-18

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Multiple mode systems

318593, 318571, G05B 1118

Patent

active

045771421

ABSTRACT:
A system for finely feeding a movable member being movable relative to a stationary member.
This fine feed system is constructed such that the movable member is provided with a fine feed mechanism, which includes a screwshaft and a nut member threadably coupled to the screwshaft and capable of being suitably clamped against the stationary member. A control device is provided for causing a driving motor to drive the screwshaft on condition that a detector to regulate the relatively movable range between the screwshaft and the nut member is not in operation, while, for causing the driving motor to operate so that the screwshaft and the nut member can return to original relative positions, on condition that the nut member is not clamped against the stationary member. The fine feed of the movable member can be instantaneously performed no matter where the movable member may be in its movable range.

REFERENCES:
patent: 4288182 (1981-09-01), Vandenkieboom et al.
patent: 4465975 (1984-08-01), Porter

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