HEIDENHAIN TNC 360 ISO Programming - Manual (Page 148)

TNC 360 7-14
7 Programming with Q Parameters
Rectangular pocket with corner rounding and tangential approach
Pocket center coordinates
X = 50 mm (Q1)
Y = 50 mm (Q2)
Pocket length X = 90 mm (Q3)
Pocket width Y = 70 mm (Q4)
Working depth Z = (–) 15 mm (–Q5)
Corner radius R = 10 mm (Q6)
Milling feed F = 200 mm/min (Q7)
Define and insert the tool
Program start and workpiece blank
Assign the rectangular pocket data to Q parameters
At corners 21 and 31 the workpiece will be
machined slightly differently than shown in
the drawing!
Note:
23
25
27
29
17
28
26
24
22
20
30
31
32
21
7.8 Examples for Exercise
Approach the pocket in a tangential arc
Mill the frame of the rectangular pocket
Depart to pocket center in a tangential arc
Enter half the pocket length and width for the paths of
traverse in blocks N200, N220, N300
Part program
%360077 G71 *
N10 G30 G17 X+0 Y+0 Z–20 *
N20 G31 G90 X+100 Y+100 Z+0 *
N30 D00 Q01 P01 +50 *
N40 D00 Q02 P01 +50 *
N50 D00 Q03 P01 +90 *
N60 D00 Q04 P01 +70 *
N70 D00 Q05 P01 +15 *
N80 D00 Q06 P01 +10 *
N90 D00 Q07 P01 +200 *
N100 G99 T1 L+0 R+5 *
N110 T1 G17 S1000 *
N120 G00 G40 G90 Z+100 M6 *
N130 D04 P01 Q13 P02 +Q03 P03 +2 *
N140 D04 P01 Q14 P02 +Q04 P03 +2 *
N150 D04 P01 Q16 P02 +Q06 P03 +4 * ................... Rounding radius for smooth approach
N160 D04 P01 Q17 P02 +Q07 P03 +2 * ................... Feed rate in corners is half the rate for linear movement
N170 X+Q01 Y+Q02 M03 * ....................................... Pre-position in X and Y (pocket center), spindle ON
N180 Z+2 * ................................................................. Pre-position over workpiece
N190 G01 Z–Q05 FQ07 * ........................................... Move to working depth Q5 (= –15 mm) with feed rate Q7
(= 100)
N200 G41 G91 X+Q13 G90 Y+Q02 *
N210 G26 RQ16 *
N220 G91 Y+Q14 *
N230 G25 RQ6 FQ17 *
N240 X–Q3 *
N250 G25 RQ6 FQ17 *
N260 Y-Q4 *
N270 G25 RQ6 FQ17 *
N280 X+Q3 *
N290 G25 RQ6 FQ17 *
N300 Y+Q14 *
N310 G27 RQ16 *
N320 G00 G40 G90 X+Q1 Y+Q2 *
N330 Z+100 M02 * .................................................... Retract tool
N9999 %360077 G71 *