Belt-grinding machine

Details Belt-grinding machine Belt-grinding machine

B - Operations, Transporting

24

B

B24B 21/00 (2006.01) B24B 21/20 (2006.01)

Patent

CA 2074294

ABSTRACT OF THE DISCLOSURE A belt-grinding machine includes an upper roller having two aligned eccentric shafts extending from its two ends, a mounting shaft pivoted to one of said eccentric shafts, a lower roller, and an abrasive belt passing over the rollers. A belt loosening unit includes a hollow casing fixedly sleeved around the mounting shaft. A handle member is attached to the mounting shaft in order to turn the mounting shaft to rotate the upper roller between a first position, wherein the abrasive belt tensely passes over the rollers, and a second position, wherein the abrasive belt loosely passes over the rollers. A torsional spring is mounted in the casing to cause the mounting shaft to return from the first position to the second position. An adjustment unit includes a plate having an opening to engage a free end of the other eccentric shaft. The plate is movable to horizontally shift the other eccentric shaft to adjust the tension of the abrasive belt when the upper roller is in the first position.

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