Machining Fundamentals
192
Lifts slightly on forward
noncutting stroke
Abrasive cutoff
wheel, circular
toothed blade, or
circular no tooth
blade (friction
cutting)
Cuts only on this stroke
Reciprocating type power saw
Continuous cutting
Circular type saw
Band type power saw
Figure 12-2. The three principal types of cutoff saws.
Variable feed setting
Positive feed
setting
Four-speed
transmission
Feed reverse
control
Start and stop
buttons
Saw
blade
Length gage
Quick action
vise handle
Feed lever
Figure 12-3. An industrial reciprocating power hacksaw. (Armstrong-Blum Mfg. Co.)