Spindle Driving Handle

摘要

A spindle driving handle is a workshop accessory tool used to manually drive a lathe headstock spindle and in turn rotate the chuck which holds the work-piece in a lathe. It is normally used for tapping, threading, when dies are used in an adapter in the tailstock and for rotating work held in a 4 jaw chuck clocking the job using a dial test indicator. It can also be used for manually screw cutting when the lathe is not under power particularly for cast iron and the softer non-ferrous metals. In this latter case change wheels need to be engaged as in conventional screw cutting where the lathe is under power.