1 0 pr ogr amming examples – HEIDENHAIN TNC 410 User Manual

Page 239

10 Programming: Q Parameters

226

Example: Concave cylinder machined with spherical cutter

Center in X axis

Center in Y axis

Center in Z axis

Starting angle in space (Z/X plane)

End angle in space (Z/X plane)

Radius of the cylinder

Length of the cylinder

Rotational position in the X/Y plane

Allowance for cylinder radius

Feed rate for plunging

Feed rate for milling

Number of cuts

Define the blank form

Define the tool

Call the tool

Retract the touch probe

Call machining operation

Reset allowance

Call machining operation

Retract in the tool axis, end of program

0 BEGIN PGM CYLIN MM
1 FN 0: Q1 = +50
2 FN 0: Q2 = +0
3 FN 0: Q3 = +0
4 FN 0: Q4 = +90
5 FN 0: Q5 = +270
6 FN 0: Q6 = +40
7 FN 0: Q7 = +100
8 FN 0: Q8 = +0
9 FN 0: Q10 = +5
10 FN 0: Q11 = +250
11 FN 0: Q12 = +400
12 FN 0: Q13 = +90
13 BLK FORM 0.1 Z X+0 Y+0 Z-50
14 BLK FORM 0.2 X+100 Y+100 Z+0
15 TOOL DEF 1 L+0 R+3
16 TOOL CALL 1 Z S4000
17 L Z+250 R0 F MAX
18 CALL LBL 10
19 FN 0: Q10 = +0
20 CALL LBL 10
21 L Z+100 R0 FMAX M2

Program sequence

■

This program requires a spherical cutter.

■

The contour of the cylinder is approximated by
many short line segments (defined in Q13). The
more line segments you define, the smoother the
curve becomes.

■

The cylinder is milled in longitudinal cuts (here:
parallel to the Y axis).

■

The machining direction can be altered by
changing the entries for the starting and end
angles in space:

Clockwise machining direction:
starting angle > end angle
Counterclockwise machining direction:
starting angle < end angle

■

The tool radius is compensated automatically.

■

Tool length with respect to the ball center.

0.1

0 Pr

ogr

amming Examples

100

-50

R40