Protective apparatus in connection with machine tools to safeguard workload installation

Abstract

This invention is an installation of a protective apparatus to prevent safety problems of machine tools caused in machining work-load process. The protective apparatus is comprised of a circuit used to slowly rotate the loaded machine tool by stepping it at a low speed and low power one full turn to insure clear workload path, and before full power is applied. This protective system will activate the full power only if a full rotation is achieved without any obstacles caused by chuck wrench or work-load interference with machine parts. The machine will subsequently arm itself to go into full power rotation if the operator activates the machine within a short period of time after the safety rotation is completed. The safety cycle is performed each time the operator activates the machine tool. This protective apparatus keeps the machine tool in low-speed and low-power unless the safety cycle has been performed each time the machine tool is turned on.

Dependencies are inferred from the claim text.