Turning using HEIZ
milling machines.
This special function creates from a section running in the horizontal
direction the movements for a turning facility. The section describes a
section through the workpiece to be turned.
CAD
drawing
The section in the X/Y level is input into the CAD. For milling, the axes
are converted into suitable machine movements.
-
Graphic X >
machine X
-
Graphic Y >
machine Z
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The
direction of turning must be set in the X-direction on the machine.
Milling is done with the machine X and Z axes.
In the CAD the section to be worked should be input in the range +X
and -Y. The highest point of the working should lie at Y = 0. No
part of the cutting line may lie above Y = 0! The cutting line
must consist of one coherent section. For working off the
milling paths are calculated and directly saved in a file using the DIN/ISO
export filter for PCNC lathes. This turning equipment can be used
only with WinPC-NC.
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 |
The
cutting line must consist of
one coherent section. Several individual elements are joined
by a horizontal line (red)
in the
Y = 0 level. |
Input of
the special turning function.
After the cutting line has been input completely and correctly, the
milling path calculation can be started using the function CAM . PCNC-Lathe.

Tool |
Selection of the milling tool from the library. A click on the tool
graphic opens the tool input. The milling takes place using this tool.
Only technology data from tool are used. An offset calculation to correct the cutter geometry is not included.
|
Position of cut |
Employment and position correction of the cutting line.
Relative |
The cutting line is always so offset in Y that the highest point
lies at
Y = 0. |
ABSOLUTE |
The cutting line is not offset. Thus more material can be
removed even for a smaller turning diameter. |
|
Clearance procedure |
Before
milling, the cutting line material is removed in layers using the
clearance process.
None |
There is no exposure of the cutting line. |
Row exposure. |
The cutting line is exposed by horizontal milling. |
Scaled |
The cutting line is exposed through scaled lines. |
|
Clearance separation [mm] |
Separation of the
clearance lines in (graphic) Y - direction. |
Following confirmation of the input the milling paths are calculated and
saved directly in a file using the DIN/ISO export filter for PCNC lathes.
This turning direction can be used only with WinPC-NC.
Results of the milling path calculation.

hatched clearance movements with cutting line in
the X- / Y level. The cutting line lies below Y = 0. Settings: ABSOLUTE +
row exposure.

Scaled
clearance movements with cutting line in the X- / Y level. The highest
point of the cutting line lies at Y = 0. Settings: Relative + scaled.
Cutter Offset calculation for spherical tools.

Spherical tools.
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The
milling data creation for woodturning contains no offset calculation.
Because the tool works from above (not as a normal mill processing
laterally from the side to the contour) a correction for many tool
shapes is not possible. Woodturning normally works with a spiky tool
(chisel).
For a spherical tool you can calculate/design a corrected offset line.
The automatic offset calculation in the program needs a closed contour.
Therefore the woodturning - line first must completed to a contour, the
offset calculation made and at last the supplement lines must removed
again.
Processing steps for offset calculation (see picture).
1)
The woodturning line before a tool offset.
2)
The line is completed with an auxiliary construction (3 vectors) to a contour without overlaps.
3)
With sphere radius calculated offset contour.
4)
The corrected woodturning line after remove the auxiliary construction. |
Finished!
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