ACU-RITE MILLPWR Old Style - Manual (Page 27)

PROGRAMMING
MILLPWR
Page 3-2
Operation Manual
“From” and “To” Points
MILLPWR lines and arcs are defined by both FROM and
TO points. MILLPWR will automatically go to the start
point before it asks you to set the depth.
Datum Selection
The datum is the point where all absolute dimensions are measured from. You must look
at the blueprint of the part and decide what to use as a datum. You should pick a point
which will let you enter most of the dimensions directly, without calculations. However,
any point you select will give the same results.
Absolute and Incremental Dimensions
To help you enter dimensions directly from the blueprint, MILLPWR allows direct entry
of both absolute and incremental dimensions. Any dimension measured from the point
you select as the datum is called absolute.
A dimension measured from any other point is called incremental. This “other point” is
called the incremental reference point.
For the part drawn below, if we put the datum in the center of the hole (point F), all
dimensions are absolute.
TO
X2 ABS
Y2 ABS
FROM
X1 ABS
Y1 ABS
FROM T O
Point X Y
A -7.123 ABS -3.936 ABS
B 3.421 ABS -3.936 ABS
C 3.421 ABS 3.603 ABS
D -4.893 ABS 3.603 ABS
E -7.123 ABS 1.011 ABS
F 0.00 ABS 0.00 ABS
3.603
7.123
3.936
3.421 4.893
1.011
2.96 DIA
THRU HOLE
A B
C D
E
F