Positive stop center

Details Positive stop center Positive stop center

1980-11-05

1983-02-01

Vlachos, Leonidas

Turning

Severing or cut-off

Interrelated means for tool infeed and circumrotation

B23B 2302

Patent

active

043709079

ABSTRACT:
A system for accurately positioning and locating a workpiece in a machine tool, including a master sleeve to be fitted into the standard tapered socket of a machine tool spindle. An interchangeable center housing is fitted into a tapered socket in said master sleeve, and a center pin is spring-mounted within said housing. The center pin projects out of said housing, and is retractable into the housing as required when the workpiece is positioned on the machine tool. The housing can be quickly removed from the master sleeve and replaced with a housing having a center pin of a different diameter, in order to accommodate a workpiece having a center hole of different diameter than that of the previous workpiece. A locking screw is provided in the housing to permit locking of the center pin in place after the workpiece has been mounted thereon. A facing disc can be positioned on the projecting end of the center pin in order to accommodate workpieces of diameter smaller than that of the center pin itself.

REFERENCES:
patent: 309288 (1884-12-01), Birkmann
patent: 979034 (1910-12-01), Rowe et al.
patent: 1829619 (1931-10-01), Svenson
patent: 2463385 (1949-03-01), Holohan
patent: 2514970 (1950-07-01), Prickett
patent: 3943804 (1976-03-01), Wolski et al.

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