B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
29/39
B23B 27/08 (2006.01) B23B 27/16 (2006.01) B23F 21/22 (2006.01)
Patent
CA 2018948
INVENTOR: PIERRE GUINAND INVENTION: TOOL FOR MACHINING WORKPIECES ABSTRACT OF THE DISCLOSURE For cutting hard-metal workpieces there is used a cutting tip comprising a hard-metal support and a layer applied thereto, e.g. by sintering. A cubic boron nitride is used for the layer applied to the hard-metal support. The mounting of such a cutting tip at a cutter shank causes problems. When the cutting tip is brazed or welded on to the cutter shank there is the risk that, due to heating, the structure of the layer applied to the hard-metal support changes or that cracks occur due to thermal stress. In order to preclude such change of structure or the formation of cracks, the cutting tip can be affixed to the cutter shank by screws. At the cutter shank there is provided a slot in which the cutting tip is located and clamped between side walls or the slot by means of fastening screws. - 1 -
Guinand Pierre
Macrae & Co.
Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag
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