SW4000 USER’S MANUAL
18 VER5.13
Chapter 3 1000 groups SDM coordinate
SW4000 has three display modes: the absolute mode (ABS), the incremental mode (INC) and the
1000 groups second data memory (SDM 0—SDM999).
ABS datum of the work-piece is set at the beginning of the processing and the 1000 group SDM is
set relative to ABS coordinate.
1000 group SDM coordinate can be divided into several segments, and every segment stores data of
one work-piece. If one segment has 20 groups SDM coordinate, DRO can be divided into 50 segments
and can store data of 50 work-pieces.
SDM 000 ------ SDM 019 data of the first work-piece
SDM 020 ------ SDM 039 data of the second work-piece
SDM 040 ------ SDM 059 data of the third work-piece
……
SDM 960 ------ SDM 979 data of 49
th
work-piece
SDM 980 ------ SDM 999 data of 50
th
work-piece
Example: The ABS datum is the center point O,
the point E, F, G, H needed processing are set
as datum of SDM 000 —SDM 003.
Two ways to set SDM coordinates:
1)
Zeroing at the current point.
2)
Presetting datum of SDM coordinate.
3.1
Zeroing at the Current Point
At first set the center point of the work-piece as the origin of the ABS, then align the lathe tool with
point E, F, G, H by moving the machine table and zero them. It is the position to process where the “0.00”
appears in X window, Y window by moving the machine table whether in ABS or in SDM coordinate.
STEPS:
1. Set the center of rectangular point O as the datum of ABS
Make line AB parallel with X axis: line AD parallel with Y axis.
When position lathe tool to point O
Zero X axis and Y axis in SDM 000;
Zero X axis and Y axis in SDM 001;
Zero X axis and Y axis in SDM 002;
Zero X axis and Y axis in SDM 003;
2. Set the point E as the datum of SDM 000.
SDM 000: align the lathe tool with point E and zero
X axis, Y axis. DRO displays as the right.
Y
O
X
C
O
D
A
E
H
G
F
