Calculated Industries Machinist Calc 4086 User Manual - 26 — M
of
74
26 — M
achinist
c
alc™
/ M
achinist
c
alc™
P
ro
Cutting Speed –
Milling
Calculate the Cutting Speed for a mill using a 1/2” tool running at
1,250 RPM (Spindle Speed):
KeYSTROKe
DISPLAY
O O
0.
1. Enter the Diameter of the tool:
1 / 2 d
DIA
0-
1/2
INCH
2. Enter the RPM:
1 2 5 0 R
RPM
1250.
3. Calculate the Cutting Speed:
C
*
CUT 164.
feeT/MIN
C
DIA
0-
1/2
INCH
C
RPM
1250.
r C
*
CUT
163.62462
feeT/MIN
* The calculated Cutting Speed is displayed as a rounded, whole
number value.
r C
displays the stored Cutting Speed value in
decimal floating point format.
Cutting Speed -
Turning
Calculate the Cutting Speed when turning a four-inch rod at 300
RPM (Spindle Speed):
KeYSTROKe
DISPLAY
O O
0.
1. Enter the Diameter of the rod:
4 i d
DIA
4
INCH
2. Enter the RPM:
3 0 0 R
RPM 300.
3. Calculate the Cutting Speed:
C
*
CUT 314.
feeT/MIN
(cont'd)