Mass reduced grinding cup

Details Mass reduced grinding cup Mass reduced grinding cup

B - Operations, Transporting

24

B

B24B 3/33 (2006.01) B24B 41/00 (2006.01) B24D 7/00 (2006.01)

Patent

CA 2300315

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 profile for the button to be ground. One or more passageways in the upper body section and grinding section permit a coolant, preferably water, optionally mixed with cutting oil or a water/air mist, to be provided to the surface of the button during grinding, through outlet(s) on the bottom surface. 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 or upper body section or grinding section or any combination thereof are adapted to reduce the mass of the grinding cup 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. By reducing vibration and/or resonance, deterioration of the preferred built-in profile of the cavity in the grinding section is minimized.

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