32 —
M
achinist
c
alc™
P
ro
2. Enter the RPM:
7 5 0 R
RPM
$
750.
3. Calculate the Cutting Speed:
C
*
CUT 81.
feeT/MIN
* Repeated presses of
C
will toggle through the inputs and outputs,
starting with the entered Diameter.
Cutting Speed –
Using Metric Mode
If you know you’re going to be making your calculations in
metric units, you can easily set your calculator to Metric Mode
prior to entering values.
Calculate the Cutting Speed when using a #1 drill at 750 RPM
(Spindle Speed):
KeySTROKe
DISPLAy
O O
0.
1. Set calculator to Metric Mode:
g S S S +
MeTRC UnITS
2. Enter the Drill Size:
1 D
1
DRILL SIZe
$
5.7912
MM
3. Store as the Diameter:
= d
DIA
$
5.7912
MM
4. Enter the RPM:
7 5 0 R
RPM
$
750.
5. Calculate the Cutting Speed:
C
*
CUT 14.
M/MIN
6. Return calculator to U.S. Mode:
g S S S +
US UnITS
(cont’d)
KeySTROKe
DISPLAy