HEIDENHAIN TNC 406 - Manual (Page 229)

208 10 Programming: Q Parameters
1
0.9 Q P
ar
amet
ers with Special F
u
nctions
Example: Ellipse
Program sequence
„ The contour of the ellipse is approximated by
many short lines (defined in Q7). The more
calculating 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 FN 0: Q1 = +50 Center in X axis
2 FN 0: Q2 = +50 Center in Y axis
3 FN 0: Q3 = +50 Semiaxis in X
4 FN 0: Q4 = +30 Semiaxis in Y
5 FN 0: Q5 = +0 Starting angle in the plane
6 FN 0: Q6 = +360 End angle in the plane
7 FN 0: Q7 = +40 Number of calculating steps
8 FN 0: Q8 = +0 Rotational position of the ellipse
9 FN 0: Q9 = +5 Milling depth
10 FN 0: Q10 = +100 Feed rate for plunging
11 FN 0: Q11 = +350 Feed rate for milling
12 FN 0: Q12 = +2 Setup clearance for pre-positioning
13 BLK FORM 0.1 Z X+0 Y+0 Z-20 Define the workpiece blank
14 BLK FORM 0.2 X+100 Y+100 Z+0
15 CYCL DEF 1.0 GENERATOR Cycle GENERATOR (see ”Cycle 1 GENERATOR” on page 133)
16 CYCL DEF 1.1 P-TAB 300 Select erosion table (here, table 300)
17 CYCL DEF 1.2 MAX=12 MIN=8 Power stages, for example between 8 and 12
18 TOOL DEF 1 L+0 R+5 Define electrode in the program
19 TOOL CALL 1 U+1 Call electrode in the infeed axis Z, undersize 1 mm
X
Y
50
50
30
50