B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
B24B 41/06 (2006.01) B24B 3/33 (2006.01) B24B 3/60 (2006.01)
Patent
CA 2335512
The present invention relates to a fixture and a grinding machine for grinding buttons of a rock drill bit. The fixture (18) comprises means (20, 25, 26) for holding the drill bit in a horizontal plane in a correct position relative to a grinding cup (51). The fixture comprises a linkage (24) consisting of at least two arms (25, 26). The arms (25, 26) are mutually joined by a first vertical hinge (27) wherein a second arm (26) is movably secured in a machine stand (23). A locking means (45) is provided to lock two arms (25, 26) simultaneously. During use operative peripheries of the arms to be locked are held at a substantially constant distance from each other.
L'invention concerne un agencement ainsi qu'une machine à rectifier les molettes d'un trépan. L'agencement (18) comporte des moyens (20, 25, 26) destinés à retenir le trépan, dans un plan horizontal, dans une position correcte par rapport à une calotte de rectification (51). L'agencement se compose d'une articulation (24) comprenant au moins deux bras (25, 26), lesquels sont assemblés à l'aide d'une première charnière verticale (27), le second bras (26) étant fixé mobile sur un montant (23) de la machine. Des moyens de blocage (45) servent à bloquer en même temps les deux bras (25, 26). Lors de l'utilisation de la machine, les périphéries fonctionnelles des bras à bloquer sont maintenues à une distance sensiblement constantes l'une de l'autre.
Bergquist Arne
Lindgren Goran
Gowling Lafleur Henderson Llp
Sandvik Ab
Sandvik Intellectual Property Ab
LandOfFree
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