Abstract: An improved pneumatically operated grinding tool having a debris removing device is primarily equipped with a main body, a pneumatic motor, a lower chamber, an upper and a lower debris intaking wheel, an air guiding disc, a cushion ring, a partition mount and a grinding plate. The grinding plate is provided with a plurality of through holes thereon so as to permit grinding debris to be sucked into the lower chamber therethrough and via the periphery thereof and further led into the lower debris intaking wheel and then the air guiding disc. The upper and lower debris intaking wheels assembled together with the air guiding disc disposed therebetween are both provided with a hexagon-shaped through hole respectively so as to permit the wheels to be fixedly secured in place onto a hexagonal shaft. The additional upper debris intaking wheel disposed on top of the air guiding disc can help introduce grinding debris delivered from the air guiding disc into an outlet and further to a debris outlet duct.

Abstract: The present disclosure is concerned with a grinding type polishing device equipped with a debris-intaking rotor which is disposed in the interior of the polishing device; and on the reverse side of the polishing plate are disposed a plurality of spaced arcuate blade protrusions. By way of the rotation of the polishing plate along with the main shaft, an air pressure differential is produced in the machine so as to permit the sucked debris produced in the grinding process to be moved continuously out of the grinding surface through the debris-intaking roller by centrifugal force via an outlet port. Thereby the debris will not interfere with the further polishing of the surface of the work object.