TNC 426/TNC 425/TNC 415 B/TNC 407
5 - 8
5
Programming Tool Movements
Fig. 5.13:
Three-dimensional movement
Fig. 5.14:
Example of simultaneous movement of more than three
axes: machining a 3D surface with an end mill
Y
X
Z
80
10
G 0 1 X + 8 0 Y 0 Z - 1 0
407
Fig. 5.15:
Inclined-tool machining
90
°
γ
Movement of three machine axes (3D movement)
The tool moves in a straight line to the programmed position.
Number of axes programmed in the block: 3
Exception:
A helical path is created by combining a circular with a linear
movement.
Entering more than three coordinates
The TNC can control up to five axes simultaneously
(for example, three linear and two rotary axes).
Such programs are too complex to program at the
machine, however.
Advantages of five-axis machining of 3D surfaces:
• Cylindrical end mills can be used (inclined-tool
milling)
• Faster machining
• Better surface definition
Input example:
G01 G40 X+20 Y+10 Z+2 A+15 C+6 F100 M3
(three linear and two rotary axes)
The additional coordinates are programmed as usual in a G01 block.
The TNC graphics cannot simulate four- or five-axis movements.
