Fault detector

Details Fault detector Fault detector

1978-02-23

1980-05-13

Gilden, Leon

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72 3, 72354, B21B 3700

Patent

active

042021910

ABSTRACT:
A cold forging machine comprises a fixed die 11 and a movable punch tool 13 reciprocable towards and away from the fixed die to act on a workpiece therein. The tool comprises a tubular punch 34 and extrusion pin 33 movable through the punch to form a bore in the workpiece. The die is provided with a tubular ejector 15 in which slides a carrier pin 16 to enter the bore of the formed workpiece to guide it during ejection. A fault detection system includes a switch 25,61 for detecting non-completion of the normal movement of the carrier pin 16 with respect to the ejector 15, and a further switch for detecting non-completion of normal movement of the extrusion pin 33 with respect to the punch 34.

REFERENCES:
patent: 1910681 (1933-05-01), Dickson
patent: 1916379 (1933-07-01), Leland
patent: 2134933 (1938-11-01), Smith
patent: 2339773 (1944-01-01), Egan
patent: 2643403 (1953-06-01), MacBlane et al.
patent: 2681026 (1954-06-01), Zajic
patent: 2732738 (1956-01-01), Krause
patent: 2821251 (1958-01-01), Borke
patent: 3162873 (1964-12-01), Ohme
patent: 3280613 (1966-10-01), Schrom
patent: 3339434 (1967-09-01), Sparling
patent: 3440909 (1969-04-01), Schmid et al.
patent: 3747142 (1973-07-01), Arbogast et al.

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