Belt grinding assembly.

摘要

A belt grinding assembly (10) for grinding a smoothly radiused edge surface on an elongate bar such as a wrench (12). A bar manipulating mechanism moves an edge surface (14) of the bar at a uniform rate of speed along an arcuate path about an axis at a right angle to a first direction in which an abrasive belt (17) is driven into forceful engagement with the abrasive belt (17) as it is driven along a support surface (23). The bar manipulating mechanism includes a wheel (28) rotated at a uniform speed about an axis at a right angle to the first direction to sequentially move the periphery of the wheel (28) past a loading station and then past the support surface (23); a clamp including jaws (35, 36) mounted on the wheel (28) for relative movement between a release position with the jaws (35, 36) spaced to freely receive a bar, and an engage position adapted to firmly clamp the bar between the jaws (35, 36); and jaw actuating structure that moves the jaws (35, 36) from a release position at the loading station, and positions the jaws (35, 36) in the engage position during movement of the clamp assembly past the support surface (23).