HEIDENHAIN iTNC 530 (60642x-03) - Manual (Page 364)

364 Programming: Q parameters
9.12 Pr
ogr
amming examples
9.12 Programming examples
Example: Ellipse
Program sequence
 The contour of the ellipse is approximated by
many short lines (defined in Q7). The more
calculation steps you define for the lines, the
smoother the curve becomes.
 The machining direction can be altered by
changing the entries for the starting and end
angles in the plane:
Clockwise machining direction:
starting angle > end angle
Counterclockwise machining direction:
starting angle < end angle
 The tool radius is not taken into account.
0 BEGIN PGM ELLIPSE MM
1 Q1 = +50 Center in X axis
2 Q2 = +50 Center in Y axis
3 Q3 = +50 Semiaxis in X
4 Q4 = +30 Semiaxis in Y
5 Q5 = +0 Starting angle in the plane
6 Q6 = +360 End angle in the plane
7 Q7 = +40 Number of calculation steps
8 Q8 = +0 Rotational position of the ellipse
9 Q9 = +5 Milling depth
10 Q10 = +100 Feed rate for plunging
11 Q11 = +350 Feed rate for milling
12 Q12 = +2 Set-up clearance for pre-positioning
13 BLK FORM 0.1 Z X+0 Y+0 Z-20 Definition of workpiece blank
14 BLK FORM 0.2 X+100 Y+100 Z+0
15 TOOL CALL 1 Z S4000 Tool call
16 L Z+250 R0 FMAX Retract the tool
17 CALL LBL 10 Call machining operation
X
Y
50
50
30
50