Grinding machine and method for flat, board-shaped workpieces

Details Grinding machine and method for flat, board-shaped workpieces Grinding machine and method for flat, board-shaped workpieces

1984-04-25

1986-02-11

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

100160, 51139, B24B 2108, B24B 2114

Patent

active

045691550

ABSTRACT:
A grinding machine and method for flat, board-shaped workpieces, especially for particle-board materials, fiber materials, veneer materials, and mineral materials, utilizing at least one continuous belt unit having a grinding belt that is supported upon rollers, a counterpressure element, and means for adjustable spacing the counterpressure element relative to the grinding belt for forming a gap corresponding to the thickness of the workpieces being ground therebetween is improved through the further utilization of support means for maintaining the counterpressure element in a substantially plane-parallel orientation relevant to the grinding belt during grinding. In accordance with a preferred embodiment of the grinding machine, the counterpressure element is a backing roller to which a variable pressure is applied by a pneumatic piston-cylinder unit. In accordance with the method aspect of the invention, the grinding is performed prior to full setting of the bonding agent, whereby the maintaining of the substantially plane-parallel orientation of the grinding belt and counterpressure element is of particular significance.

REFERENCES:
patent: 1953190 (1935-04-01), Paterson
patent: 2162279 (1939-06-01), Herchenrider
patent: 2479506 (1949-08-01), Payton
patent: 2718827 (1955-09-01), Whittum
patent: 3014324 (1961-12-01), McCarty
patent: 3111894 (1963-11-01), Murray
patent: 3394501 (1968-07-01), Carlson et al.
patent: 3611647 (1971-10-01), Davis
patent: 4178721 (1979-12-01), Evans

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