Control for reciprocating part in a machine tool

Details Control for reciprocating part in a machine tool Control for reciprocating part in a machine tool

1989-06-22

1990-08-07

Ro, Bentsu

Electricity: motive power systems

Motor-reversing

Periodic- or intermittent-reversing

318468, 318127, H02K 3300

Patent

active

049470906

ABSTRACT:
In a grinder having a reciprocating table, a pair of oppositely arranged traverse potentiometers are actuated by the table, and in each direction, the respective potentiometer produces an increasing voltage to reverse the table. A pair of remote potentiometers are arranged respectively opposed to the traverse potentiometers, and are manually set to thereby determine the points of reversing of the table. Signal LED's indicate the position of the table, and these are controlled by signal potentiometer that is driven with the traverse potentiometers. Manual switch means enables the operator to selectively run the table past the normal points of reversal set by the remote potentiometers. Means is provided for slowing the speed of movement of the table at the end of its travel to minimize inertial shock.

REFERENCES:
patent: 2554080 (1951-05-01), Yardeny et al.
patent: 2994021 (1961-07-01), Hinz
patent: 3213342 (1965-10-01), Littwin
patent: 3474573 (1969-10-01), Homeyer
patent: 3509436 (1970-04-01), Hovance
patent: 3949288 (1976-04-01), Littwin
patent: 4179223 (1979-12-01), Kwan et al.
patent: 4180766 (1979-12-01), Matula
patent: 4562385 (1985-12-01), Rabson
patent: 4566224 (1986-01-01), Moldovan et al.
patent: 4583027 (1986-04-01), Parker et al.

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