
194 Fundamentals of Machining Processes
tolerances, produce precision nishes, and minimize the need for highly
skilled machine operators.
The cutting speed in broaching is the speed of progressive motion of the
broach or workpiece. Broaching is classied as internal or external accord-
ing to the broach position in relation to the workpiece. Broaching is gener-
ally used for machining through holes of any cross-sectional shape, straight
and helical slots, external surfaces of various shapes, and external and
internal toothed gears (Figure 6.31). Regarding the application of broaching
force, pull-broaching and push-broaching operations are distinguished ...