B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
B24B 3/33 (2006.01) B24B 45/00 (2006.01) B24D 7/18 (2006.01)
Patent
CA 2306735
The present invention provides a grinding cup having a lower grinding section and an upper body section integrally connected to form a grinding cup having top and bottom surfaces. The grinding section is formed from a material capable of grinding the hard materials such as tungsten carbide inserts of button bits etc. A centrally disposed convex recess is formed in the bottom surface having the desired size and profile for the button to be ground. Drive means are provided on or in the upper body section that cooperate with the output shaft of the grinding machine. Retaining means are provided in conjunction with the drive means to releasably secure the grinding cup to the output shaft of the grinding machine during use. The drive means and the upper body section or grinding section of the grinding cup are adapted to optimize the engagement surfaces and points of contact between the grinding cup and rotor or adapter to reduce negative impact on operational stability and rotor wear, as well as other potential associated wear to the grinding apparatus caused by vibration and/or resonance. In addition, substantially reducing vibration and/or resonance will minimize the deterioration of the preferred built-in profile of the cavity in the grinding section. In the preferred design the drive and/or contact surfaces between grinding cup and rotor or adapter are substantially harmonized, minimizing operator exposure to sharp and/or protruding features when the grinding cup and rotor have engaged.
Blaney Mcmurtry Llp
Cme Blasting & Mining Equipment Ltd.
Sjolander Bo Thomas
LandOfFree
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