Importing geometry for machining in CNC Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import a DXF file for machining.

CNC Programming

geometry = import_geometry('[1]')

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Ageometry.dwg

Bdxf_file.dxf

Ctoolpath.nc

Dmachine.gcode

Attempts:

3 left

💡 Hint

Common Mistakes

Using a DWG or GCODE file instead of a DXF file.

Forgetting to include the file extension.

The import_geometry function requires the DXF file name to load the geometry correctly.

2fill in blank

medium

Complete the code to extract the contours from the imported geometry.

CNC Programming

contours = geometry.[1]()

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Aextract_contours

Bparse_geometry

Cload_shapes

Dget_paths

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method that does not exist on the geometry object.

Confusing contour extraction with loading or parsing.

The method extract_contours() is used to get the contour paths from the geometry object.

3fill in blank

hard

Fix the error in the code to correctly convert contours to toolpaths.

CNC Programming

toolpaths = convert_to_toolpaths([1])

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Acontours

Bcontour

Cgeometry

Dpaths

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a single contour instead of the list.

Passing the geometry object instead of contours.

The variable 'contours' holds the list of contour paths and must be passed to convert_to_toolpaths.

4fill in blank

hard

Fill both blanks to filter contours by length and convert them to toolpaths.

CNC Programming

filtered = [c for c in contours if c.length [1] [2]]
toolpaths = convert_to_toolpaths(filtered)

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A>

B10

C<

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' causing wrong filtering.

Using a too small length threshold.

We filter contours longer than 10 units using '>' and 10, then convert them to toolpaths.

5fill in blank

hard

Fill all three blanks to create a dictionary of toolpaths with names for machining.

CNC Programming

named_toolpaths = [1]([2]: [3] for [2] in range(len(toolpaths)) if len(toolpaths[[2]]) > 0)

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Adict

Bi

Ctoolpaths[i]

Dtoolpaths

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong variable names in comprehension.

Not using dict() to create the dictionary.

We use dict comprehension with 'i' as key and toolpaths[i] as value for non-empty toolpaths.