Control device and method for an incremental numerical axis in a

Details Control device and method for an incremental numerical axis in a Control device and method for an incremental numerical axis in a

1991-04-16

1994-02-01

Smith, Jerry

Boots, shoes, and leggings

3644742, 318565, G05B 2302, B23Q 1722

Patent

active

052837513

ABSTRACT:
The instantaneous position of a carriage (1) is made explicit in the form of data transmitted via a connection (10) to a circuit (9) by a signal converter (11) and a sensor (12) reading marks (13) on a rule (14). One of the marks (15) acts as a preselected reference mark. During a referencing sequence, the carriage is moved in one direction until it reaches a stop (18). The circuit then causes the appearance of a position error which attains a critical value, causing reversal of the direction of movement of the carriage and activation of detection of the preselected reference.

REFERENCES:
patent: 3828318 (1974-08-01), Bennett et al.
patent: 4580085 (1986-04-01), Eto et al.
patent: 4682089 (1987-07-01), Tamari
patent: 4757458 (1988-07-01), Takemoto et al.

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