The Autocorrection program
The milling path corrections cutout in 2D and 3D are centralised in the
Autocorrection program. The determination of the correction
direction inward or outward takes place through the setting inward/outward. For
this correction the data are used in the current working area ActLayer.

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Designations:
FWi: |
Tool angle (to vertical). |
FOff: |
Safety height above the material. |
FEt: |
Incised depth, milling depth in the material. |
FrS: |
Tool tip radius. |
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Tool input.
Input of the tools and technology data for the calculations. A changing
station (WSt) must be specified for each tool, independent of the geometry
data. Tools with WSt = 0 are disconnected. A tool change is carried
out only
with change of the WSt#. On the other hand, tools with the same
geometry data, but different technology data (milling depth, feed,...), can
have the same WSt#. In
this case no tool change is carried out but the technology data are
changed.
A detailed description of tool input can be obtained in the General
Instructions under
Tool input.
This function calculates 2D milling paths and 3D
cutout tracks for up to 10
tools simultaneously. The function demands error-free, closed contours
without crossovers. Tools with cones circumscribe the contour
in 3D, cylindrical tools (FWi = 0°) in 2D. The tool path calculation
takes place by block. With this,
more favourable milling paths and shorter
calculation times result.

The data input takes place in the light
coloured fields.
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Tool selection.
The tools are entered in the list consecutively starting with 1 up to
the largest tool, the clearance tool, with their serial number from
the tool library. The number of the minimum and maximum permitted
tools conforms with the process. The tool input is always to take
place continuously, spaces between the tools are not permitted. The
tool input takes place quality-oriented, starting with the finest tool
(determines the quality of the milling). The tools are to be entered
in ascending order of their tip radius (FrS).
The milling angle (FWi) should be similar
or matched to the task.
In any case, for a correct implementation of the program,
the
overall radii (Res) of given tools 1 .. 10 must be given in ascending
order. The milling angles (FWi) can be entered in the range from 0
degrees (= cylindrical) .. 89,999 degrees. Other milling angles are
not accepted.
The program changes into
tool input
using
<M> or <F2> or by clicking on to the tool
graphics. |
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calculation process
2D: |
Tool paths are calculated only in 2D without cutouts. |
2D+3D: |
The tool paths are calculated with cutouts, if the milling angle
is >0 degrees. The tool here circumscribes the contours
completely with all cutouts. The ratio of the tip radii must be so
selected that no islands remain standing in acute internal angles.
Ratio W1 : W2 = 1 : <=2 etc., if only flat internal angles
occur the ratio can possibly be
selected larger.
Gaps in the calculated milling paths
can be checked using TLayer MillingGraphic. |
3D: |
Only cutout paths are calculated. |
Elbow: |
For
this tool only paths in 2D are calculated, for the clearance of
islands, which result from the next largest tool (only if rs*2.5 < Frs+1). |
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Clearance process.
All clearance paths are joined together so far as the contours are not
touching or overlapped.
Line-shaped: |
All milling paths are created for line-shaped clearance (hatch
engraving). The milling paths are extensively optimised for this
in that unnecessary withdrawal movements are avoided.
In
the vast majority of applications this process creates the
quickest, shortest and most secure milling paths. |
Lines unidirectional: |
Calculates
line-shaped clearance paths. As opposed to 'line-shaped' here the
milling paths are not joined. The milling movement takes place in
one direction only. This process is employed for optical
engravings and particularly high-value clearance paths. In the
milling movements their are no reversal movements
(reciprocal milling) and thus a better cross-section. Disadvantage
is the high number of wasted movements. |
Track parallel rad.: |
A clearance track is created through equidistant milling run lines
(radius-related - island engraving). The offset to the next
clearance contour takes place in the cutter radius separation. A
precalculation width is required for this calculation.
Through the continuous calculation process one has to reckon with
problems, in particular for complex graphics. |
Track parallel diam.: |
A clearance track is created through equidistant milling run lines
(diameter-related - island engraving). The offset to the next
clearance contour takes place in the cutter diameter separation. A
precalculation width is required for this calculation.
Through the continuous calculation process one has to reckon with
problems, in particular for complex graphics. |
Contour edge (outline): |
A clearance track is created through equidistant milling run lines
(radius-related - island engraving). The offset to the next
clearance contour takes place in the cutter radius separation. The
calculation ends as soon as the precalculation width (= bandwidth)
is achieved. |
No clearance track: |
No clearance track is created.
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Clearance angle:
Input of the
hatching angle for line-shaped clearance tracks (360° < 0 <= +360°). |
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Precalculation width.
Width of the offset calculation for track parallel clearance processes.
This value should be selected to be not smaller than the resulting radius
(Res) of the largest tool.
For
the case that errors result with continuous calculation, the precalculation width can be enlarged or reduced. |
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Calculation in surface
relief height / at base.
Surface
relief : |
Milling tracks are calculated for the creation of the surface
relief face (e.g. cutout stamp).
Standard
setting. |
Base: |
Milling tracks for the creation of the base are created (only for 2D
e.g.
recessed shape). |
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Calculation for embossed / recessed.
Embossed: |
The milling tracks are calculated for an embossed stamp. |
Recessed: |
The milling tracks are calculated for a recessed task. |
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Tool tip offset.
Correction of the tool offset calculation. The calculation can be
marginally corrected using the tip offset. E.g. a task can be repeated
using a tip offset in order to clear tool errors.
The tip offset can be employed in the range (smallest tip radius) up to +10mm. |
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Parameter.
Change in the parameter input. For the adjustment of the parameters
comp. description in the
General Instructions CAD . Input Parameter - select AutoCorr |
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Tool block
- tool block input.
The tools from #50 are subdivided into
blocks of 10. A block can be selected, edited, opened and saved.
Edit: |
Edit the tools of one block (branched into tool input at the
position of the first tool in the block). |
-: |
1
block back (>= 50). |
+: |
1
block forward (<= 190). |
Open: |
Load block
of 10 tools from disk into the current block of the tool
library |
Save: |
Save the current block of the tool library (10 tools) on a disk. |
The tools always commence at the start of the block (group of 10).
Tools with a valid station number (>0) are taken over in the
calculation list in the order of the entry
into the tool library. If no tool with a valid station number is
available, then at least the first block tool is taken over. Sensible
entries in the tool library for a tool block using the example for the
block from #50 (3 tools):
#50 |
Is the
finest tool (last tool of the processing).
(Station number
e.g.. = 3). |
#51 |
Is
the next coarser
tool.
(Station number
e.g. = 2). |
#52 |
Is
the largest tool and clearance tool.
(Station number
e.g. = 1). |
#53..#59 |
The
tool #53 and all subsequent tools up to #59 are not used.
Station number
= 0). |
The ascending order
must be observed. |
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Process.
Open and save the calculation settings. All settings and tools of the
calculation are saved and are again available following Open
for an identical or similar calculation. |
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The milling paths calculated using an Autocorrection process are
exported. For this goto Export - Select. With the aid of
this, direct export milling data, for example for stamp, can be very
productively output without detours to a machine. |
The calculated milling paths are taken over in one layer. For this a
target layer is to be input. With the aid of this function 2D and
3D milling data can be combined in one layer and output using
File . direct mill
into a project. To save in a layer select the target layer using Layer
Selection.

If there is already data in the selected target layer, then milling data
can be loaded into the target layer or the existing data can be
overwritten.
Indication of the calculated tool paths.

Graphics
parameters: |
Selection of the tools, representation of the surface relief or base
level and sequence of drawings.

Draw: |
Tools, which are to be plotted with every graphic build up,
switch On or OFF. |
Cutter graphics Level: |
YES: |
Milling
trace at surface relief level. |
No: |
Milling
trace at base. |
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Sequence: |
Sequence of drawings of the tool paths for the milling graphic.
YES: |
The
tools are plotted in ascending order. |
No: |
The
tools are plotted in descending order. |
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Milling trace: |
The picture is drawn with the wide milling trace. |
Mark
3D cutout: |
All
3D movements, which do not run at the base, are highlighted. |
Mark
3D level: |
All
movements are marked depending on the Z-value. For this both
limiting levels are to be determined. |
Plot posn 3D: |
Click-on one vector in the tool path, mark and indicate the
coordinates. |
Normal/Zoom
projection: |
The tool paths are shown in perspective. With presentation in
plan view (all angles = 0) the paths are shown in grey (colour)
levels. PosnA: colour for withdrawn movements. With input without
colour the perspective view takes place with height level marking.
For the description comp. Menu File. |
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