Automatic tool-moving machine

Details Automatic tool-moving machine Automatic tool-moving machine

1979-06-27

1981-06-16

Briggs, William R.

Gear cutting, milling, or planing

Milling

With regulation of operation by templet, card, or other...

318571, 318577, 318592, 409193, 409208, B23Q 2100, G05B 0000

Patent

active

042734827

ABSTRACT:
An automatic machine for displacing a shaping tool, such as a router, over a work area includes a tool mounting assembly carried by support means such as an articulated arm. The arm is movable by first movement means relative to fixed structure of the machine over the whole work area, while the tool mounting assembly can be moved within a limited zone relative to the arm by second movement means. The movement of the tool mounting assembly (and thus of the tool) is directly measured relative to the machine fixed structure and compared with a required movement to generate an error signal. This signal is fed to the second movement means which endeavors to move the tool mounting assembly as required over the work area. In order to prevent the tool mounting assembly reaching the limits of its movement relative to the arm, the first movement means is connected in a servo loop arranged to monitor the movement of the mounting assembly relative to the arm, and to activate the first movement means to maintain the mounting assembly within the limits of its movement.

REFERENCES:
patent: 2717979 (1955-09-01), Gardiner
patent: 3431474 (1969-03-01), Van Ostrand
patent: 3566239 (1971-02-01), Taniguchi
patent: 3774098 (1973-11-01), Moss
patent: 3860862 (1975-01-01), Dell et al.
patent: 4025839 (1977-05-01), Maury
patent: 4078195 (1978-03-01), Mathias et al.
patent: 4118660 (1978-10-01), Ohtsuki et al.
patent: 4164693 (1979-08-01), Leenhouts

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