Support pad for drill

Details Support pad for drill Support pad for drill

1995-09-11

1997-12-16

Bishop, Steven C.

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Frictionally engaging sides of opening in work

175408, 408 81, 408200, B23B 5100

Patent

active

056977379

ABSTRACT:
A drill includes support pads for supporting and guiding the drill in the drill hole. The support pads are formed as parallelepiped-shaped cemented carbide bodies which each have two wing-shaped protrusions on their longitudinal sides. In a corresponding way, the drill head of the drill includes recesses with two bulged parts on the long sides. This gives the support pad a determined axial position and strengthens the support pad at the weakening caused by the central hole. Further, the support pad can be turned half a revolution if one of its ends becomes damaged since the end spaces do not have to function as abutment surfaces.

REFERENCES:
patent: 3751177 (1973-08-01), Faber

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