Machine drive system

Details Machine drive system Machine drive system

1988-09-23

1990-05-01

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318 67, 364513, 74 8922, B66C 2316

Patent

active

049221736

ABSTRACT:
A drive system for a machine such as a robot providing motion in two independent directions under the control of respective motors, comprising a saddle supported for motion in a first said direction, an arm supported by said saddle for motion in the second said direction, a first belt drive arranged to transmit drive from a first of said motors to said saddle and a second belt drive arranged to transmit drive from the second of said motors to said arm, said second belt drive comprising a belt having two portions extending around respective pulleys mounted on the arm and arranged to be driven by the second motor such that one portion is lengthened and the other shortened when the first motor is stopped, so that the arm moves relative to the saddle, but when the first motor is driven and the second motor stopped said two portions remain the same length so that the arm does not move relative to the saddle as the saddle moves.

REFERENCES:
patent: 4315437 (1982-02-01), Etcheparpe et al.
patent: 4507044 (1985-03-01), Hutchins et al.
patent: 4524520 (1985-06-01), Levy
patent: 4537084 (1985-08-01), Passemard
patent: 4600083 (1986-07-01), Parent et al.
patent: 4806066 (1989-02-01), Rhodes et al.

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