HEIDENHAIN iTNC 530 (60642x-04) - Manual (Page 223)

HEIDENHAIN iTNC 530 223
6.2 F
undamentals of path functions
6.2 Fundamentals of path functions
Programming tool movements for workpiece
machining
You create a part program by programming the path functions for the
individual contour elements in sequence. You usually do this by
entering the coordinates of the end points of the contour
elements
given in the production drawing. The TNC calculates the
actual path of the tool from these coordinates, and from the tool data
and radius compensation.
The TNC moves all axes programmed in a single block simultaneously.
Movement parallel to the machine axes
The program block contains only one coordinate. The TNC thus moves
the tool parallel to the programmed axis.
Depending on the individual machine tool, the part program is
executed by movement of either the tool or the machine table on
which the workpiece is clamped. Nevertheless, you always program
path contours as if the tool were moving and the workpiece remaining
stationary.
Example:
The tool retains the Y and Z coordinates and moves to the position
X=100. See figure.
Movement in the main planes
The program block contains two coordinates. The TNC thus moves the
tool in the programmed plane.
Example:
The tool retains the Z coordinate and moves in the XY plane to the
position X=70, Y=50 (see figure).
Three-dimensional movement
The program block contains three coordinates. The TNC thus moves
the tool in space to the programmed position.
Example:
X
Y
Z
100
50 L X+100
50 Block no.
L Path function “straight line”
X+100 Coordinate of the end point
X
Y
Z
70
50
L X+70 Y+50
X
Y
Z
80
-10
L X+80 Y+0 Z-10