Drill chuck with threaded spindle hole

Details Drill chuck with threaded spindle hole Drill chuck with threaded spindle hole

1999-01-20

1999-11-23

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

279 62, B23B 3102

Patent

active

059889586

ABSTRACT:
A drill has a drill spindle centered on and rotatable about an axis and having a front externally threaded end and immediately thereadjacent a shank. A chuck element centered on the axis is formed with a forwardly open tool hole, axially therebehind with a threaded bore complimentarily engaging the spindle end, and immediately therebehind with a coaxial unthreaded bore surrounding the shank. An adjustment element is rotatable about the axis on the chuck element. One of the elements is formed with a plurality of angled guide passages and the other element is formed with a screwthread centered on the axis. Respective jaws in the passages and exposed in the tool hole each have a toothed edge meshing with the other-element screwthread so that relative rotation of the elements displaces the jaws along the respective passages.

REFERENCES:
patent: 2684856 (1954-07-01), Stoner
patent: 3938817 (1976-02-01), Rohm
patent: 4536113 (1985-08-01), Hatfield
patent: 4645387 (1987-02-01), Rohm
patent: 5009439 (1991-04-01), Sakamaki
patent: 5072954 (1991-12-01), Mack
patent: 5452906 (1995-09-01), Huff et al.
patent: 5540453 (1996-07-01), Sakamaki
patent: 5882153 (1999-03-01), Mack et al.

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