Machine for polishing and/or grinding

Details Machine for polishing and/or grinding Machine for polishing and/or grinding

B - Operations, Transporting

23

Q

B23Q 11/12 (2006.01) B21B 43/00 (2006.01) B24B 1/00 (2006.01) B24B 23/02 (2006.01) B24B 55/02 (2006.01)

Patent

CA 2199163

The prior art discloses machines which, for cooling the surface to be machined, have a gas supply line which opens into a gas outlet which is in the direct vicinity of the polishing disk. When CO2 is used as cooling gas, stoppages, which can be traced back to snow formation of the CO2, may occur in the line and in the gas outlet. In order to avoid blockages, the machine is assigned means for the supply of the liquid or supercritical CO2 which comprise a valve for regulating the throughflow quantity of the CO2 with an expansion nozzle, the valve being arranged inside the machine.

Les antériorités visent des machines qui assurent le refroidissement de la surface à usiner à l'aide d'une canalisation d'alimentation en gaz dont l'orifice d'évacuation se trouve immédiatement à côté du disque polisseur.Lorsque le gaz carbonique est employé comme gaz de refroidissement, des obstructions attribuables à la transformation du gaz en neige peuvent survenir dans la canalisation où il circule et dans l'orifice d'évacuation de cette dernière. Pour éviter de telles obstructions, la machine qui nous intéresse est dotée d'un dispositif d'alimentation en CO2 liquide ou supercritique englobant une vanne de régulation du débit de CO2 munie d'un ajutage de dilatation, ladite vanne étant montée à l'intérieur de la machine.

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