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Reference system on milling machines, 1 f undamentals – HEIDENHAIN iTNC 530 (340 420) User Manual

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HEIDENHAIN iTNC 530

35

4.1 F

undamentals

Reference system on milling machines

When using a milling machine, you orient tool movements to the
Cartesian coordinate system. The illustration at right shows how the
Cartesian coordinate system describes the machine axes. The figure
at center right illustrates the “right-hand rule” for remembering the
three axis directions: the middle finger is pointing in the positive
direction of the tool axis from the workpiece toward the tool (the Z
axis), the thumb is pointing in the positive X direction, and the index
finger in the positive Y direction.

The iTNC 530 can control up to 9 axes. The axes U, V and W are
secondary linear axes parallel to the main axes X, Y and Z, respectively.
Rotary axes are designated as A, B and C. The illustration at lower right
shows the assignment of secondary axes and rotary axes to the main
axes.

+X

+Y

+Z

+X

+Z

+Y

W+

C+

B+

V+

A+

U+

Y

X

Z