HEIDENHAIN TNC 407 (280 580) User Manual - Manual (Page 111)

TNC 425/TNC 415 B/TNC 407 5-12
5 Programming Tool Movements
Fig. 5.18: Inclined-tool machining
Fig. 5.17: Example of simultaneous movement of more than three
axes: machining a 3D surface with an end mill
5.3 Path Functions
Fig. 5.16: Three dimensional movement
90
°
γ
Y
X
Z
80
10
L X +80 Y 0 Z –10
Movement of three machine axes (3D movement)
The tool moves in a straight line to the programmed position.
Number of axes programmed in the NC block: 3
Exception: A helical path is created by combining a circular movement
in a plane with a linear movement perpendicular to the
plane.
Entering more than three coordinates
(not on TNC 407)
The TNC controls up to 5 axes simultaneously. Five-
axis machining can include movement in 3 linear
and 2 rotary axes, for example.
Such programs are too complex to program at the
machine.
Advantages of five-axis machining of 3D surfaces:
• The part can be machined with cylindrical end
mills (inclined-tool milling).
• Faster machining
• Better surface definition
Input example:
L X+20 Y+10 Z+2 A+15 C+6 R0 F100 M3
(3 linear and 2 rotary axes)
The additional coordinates are programmed as usual in an L block.
The TNC graphics do not simulate four- or five-axis movements.