HEIDENHAIN TNC 640 (34059x-04) ISO programming - Manual (Page 446)

Programming: Turning Operations
14.2 Basis Functions (Software Option 50)
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TNC 640 | User's Manual for DIN/ISO Programming | 3/2014
Undercut UDC TYPE_U
Input elements in undercut UDC TYPE_U
Input element Application Input
R Corner radius of both
inner corners
Required
DEPTH Undercut depth Required
BREADTH Undercut width Required
RND / CHF Curve / chamfer of
outer corner
Required
Undercut form U: depth = 3, width = 8
N30 G01 X+40 Z+0
N40 G01 Z-30
N50 UDC TYPE_U R1 DEPTH3 BREADTH8 RND1
N60 L X+60
Undercut UDC THREAD
Input elements in undercut DIN 76 UDC THREAD
Input element Application Input
PITCH Thread pitch Optional
R Corner radius of both
inner corners
Optional
DEPTH Undercut depth Optional
BREADTH Undercut width Optional
ANGLE Undercut angle Optional
Undercut form U: depth = 3, width = 8
N30 G01 X+40 Z+0
N40 G01 Z-30
N50 UDC THREAD PITCH2
N60 L X+60