LATHE OPERATIONS - OD1645 - LESSON 1/TASK 1
headstock spindle and one in the tailstock spindle. Centers for lathe work
have standard tapered shanks that fit into the tailstock directly and into
the headstock spindle, using a center sleeve to convert the larger bore of
the spindle to the smaller taper size of the lathe center. The centers are
referred to as live centers or dead centers, depending upon whether they
move with the workpiece or remain stationary.
The most common types of
centers are described below.
(2) Male Center.
The male center or plain center is the type used in
pairs for most general lathe turning operations. The point is ground to a
60 cone angle. When used in the headstock spindle, where it revolves with
the workpiece, it is commonly called a live center.
When used in the
tailstock spindle, where it remains stationary when the workpiece is
turning, it is called a dead