Drill chuck and tool for rotary drilling and rotary percussion d

Details Drill chuck and tool for rotary drilling and rotary percussion d Drill chuck and tool for rotary drilling and rotary percussion d

1986-03-20

1988-02-23

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

279 194, 279 64, 279123, B23B 3118

Patent

active

047267194

ABSTRACT:
A drilling device includes a drill chuck which is provided with at least two adjustable clamping jaws slightly rotatably guided in the drill chuck and including a guide surface for a tool shank of a tool. The guide surface is provided with at least one projection extending in direction of the chuck axis and engaging into a recess of the tool shank for rotating and axially limiting the play of the tool. The projection of each jaw is arranged circumferentially rearwardly offset to the mid-plane of each clamping jaw so that the guide surface is defined by a leading part which is wider than a trailing part in circumferential direction of the tool shank.

REFERENCES:
patent: 4512692 (1985-04-01), Nielsen
patent: 4536109 (1985-08-01), Hunger et al.
patent: 4586859 (1986-05-01), Rohm

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