DISPOZITIV DE COMANDA A EXPANSIUNII CAPETELOR DE RODAJ

摘要

A device for controlling the expansion of an expansible grinding tool includes control means for effecting controlled axial movement of a cone in the tool. The control means includes a screw engaging a fixed nut and controllably rotatable by a driving motor, the resultant axial movement of the screw being transmitted to the cone. The expansion control device is provided in the form of a removable grinding head unit arranged to be inserted between a grinding machine and the grinding tool. The grinding head unit also includes means for transmitting rotary motion from the grinding machine to the grinding tool.