Detecting machine tool set-up errors

Details Detecting machine tool set-up errors Detecting machine tool set-up errors

1982-05-11

1985-11-26

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340508, 340511, 340687, G08B 2100

Patent

active

045556989

ABSTRACT:
A tool setting-aid comprising an anodized aluminum "button" and a support therefor is set up at a predetermined datum position on the worktable of a computer controlled machine tool, the machine program including a check cycle which sends the cutting tool around and over the button or, if the tool is oversize or set wrongly, into contact with the button. The button is supplied with electrical current via a cable having a resistor coupled to the button end thereof by an electronic detector circuit which includes a sensor for detecting current increase due to contact between button and cutting tool and a sensor for sensing interruption of such current due to cable breakage or a failure to properly connect it to the setting-aid.

REFERENCES:
patent: 3135951 (1964-06-01), Byrne
Article "Tech Briefs", in Tooling and Production Magazine (p. 112, Jan. 1981).
Article "Just Announced", in Machinery and Production Engineering (p. 12, Oct. 31, 1971).

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