Importing geometry for machining in CNC Programming - Mini Project: Build & Apply

Importing geometry for machining

📖 Scenario: You are preparing a CNC machine program to cut a simple part. The part's shape is defined by a list of 2D points representing its outline. You want to import this geometry data into your CNC program and process it step-by-step.

🎯 Goal: Build a CNC program script that imports the geometry points, sets a tolerance value, processes the points to filter those within the tolerance, and finally outputs the filtered points for machining.

📋 What You'll Learn

Create a list called geometry_points with exact 2D points: (0,0), (10,0), (10,10), (0,10), (5,5)

Create a variable called tolerance and set it to 5

Use a list comprehension called filtered_points to include only points where both x and y are less than or equal to tolerance

Print the filtered_points list

💡 Why This Matters

🌍 Real World

CNC programmers often import geometry data points to define tool paths for machining parts. Filtering points helps focus on relevant areas within machine limits.

💼 Career

Understanding how to import and process geometry data is essential for CNC programmers and manufacturing engineers to automate machining tasks efficiently.

1

Create the geometry points list

Create a list called geometry_points with these exact 2D points as tuples: (0, 0), (10, 0), (10, 10), (0, 10), and (5, 5).

CNC Programming

# Create the geometry_points list with the given points
# Your code here

Need a hint?

Use square brackets [] to create a list and parentheses () for each point tuple.

2

Set the tolerance value

Create a variable called tolerance and set it to the number 5.

CNC Programming

geometry_points = [(0, 0), (10, 0), (10, 10), (0, 10), (5, 5)]
# Create the tolerance variable and set it to 5
# Your code here

Need a hint?

Just assign the number 5 to the variable named tolerance.

3

Filter points within tolerance

Use a list comprehension to create a new list called filtered_points that includes only points from geometry_points where both x and y coordinates are less than or equal to tolerance. Use for x, y in geometry_points in your comprehension.

CNC Programming

geometry_points = [(0, 0), (10, 0), (10, 10), (0, 10), (5, 5)]
tolerance = 5
# Create filtered_points list with points where x <= tolerance and y <= tolerance
# Your code here

Need a hint?

Use a list comprehension with for x, y in geometry_points and an if condition to filter points.

4

Print the filtered points

Write a print statement to display the filtered_points list.

CNC Programming

geometry_points = [(0, 0), (10, 0), (10, 10), (0, 10), (5, 5)]
tolerance = 5
filtered_points = [(x, y) for x, y in geometry_points if x <= tolerance and y <= tolerance]
# Print the filtered_points list
# Your code here

Need a hint?

Use print(filtered_points) to show the filtered points.