Calculated Industries 4087 User Manual - — 31
Manual is about: Machinist Calc Pro
of
70
U
ser
'
s
G
Uide
— 31
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 4" rod at 300 RPM
(Spindle Speed):
KeySTROKe
DISPLAy
O O
0.
1. Enter the Diameter of the rod:
4 d
DIA
$
4.
INCH
2. Enter the RPM:
3 0 0 R
RPM
$
300.
3. Calculate the Cutting Speed:
C
*
CUT 314.
feeT/MIN
* Repeated presses of
C
will toggle through the inputs and outputs,
starting with the entered Diameter.
Cutting Speed – Drilling
Calculate the Cutting Speed using a 10.5 mm drill bit with the
Spindle Speed set to 750 RPM:
KeySTROKe
DISPLAy
O O
0.
1. Enter the Diameter of the hole to be drilled:
1 0 . 5 m d
DIA
$
10.5
MM
KeySTROKe
DISPLAy
(cont’d)