2 — M
achinist
c
alc™
P
ro
RPM (SPINDLE SPEED) ................................................................................. 20
RPM –
Milling
................................................................................................ 21
RPM –
Turning
............................................................................................... 22
RPM –
Drilling
................................................................................................ 22
FEED RATE ..................................................................................................... 23
Feed Rate –
Based on Cutting Feed and RPM (for Turning)
........................ 23
Feed Rate –
Based on Cutting Feed and RPM (for Drilling)
......................... 23
Feed Rate –
Based on Feed per Tooth, RPM and # of Teeth
....................... 24
CUTTING SPEED ............................................................................................ 25
Cutting Speed –
Milling
................................................................................. 25
Cutting Speed –
Turning
................................................................................ 26
Cutting Speed –
Drilling
................................................................................. 26
FEED PER TOOTH (CHIP LOAD) .................................................................. 27
Feed per Tooth –
Based on Cutting Feed and # of Teeth
............................ 27
Feed per Tooth –
Based on Feed Rate, RPM and # of Teeth
...................... 27
RADIAL CHIP THINNING ................................................................................ 28
Radial Chip Thinning –
Based on Feed per Tooth, Tool Diameter and Cut Depth
............................ 28
CUTTING FEED ............................................................................................... 29
Cutting Feed –
Based on Feed per Tooth and # of Teeth
............................. 29
Cutting Feed –
Based on Feed Rate and RPM
........................................... 30
DRILL SIzES .................................................................................................... 30
DRILL POINT ................................................................................................... 31
THREAD SIzING ............................................................................................. 32
Internal Thread .............................................................................................. 32
External Thread ............................................................................................. 33
Thread Classification ..................................................................................... 33
Changing a Thread Classification ................................................................. 33
Thread Size ................................................................................................... 34
(cont’d)
UG4089E-A-inside.indd 2
6/9/2011 3:16:16 PM