Tolerance achievement strategies in CNC Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the tolerance value for the CNC program.

CNC Programming

tolerance = [1]  # Set tolerance in millimeters

Drag options to blanks, or click blank then click option'

A-0.01

B10

C100

D0.01

Attempts:

3 left

💡 Hint

Common Mistakes

Using a large number like 10 or 100 as tolerance.

Using a negative number for tolerance.

Tolerance values are usually small positive numbers representing millimeters. 0.01 mm is a common tight tolerance.

2fill in blank

medium

Complete the code to check if the measured dimension is within tolerance.

CNC Programming

if abs(measured_value - target_value) [1] tolerance:
    print('Within tolerance')
else:
    print('Out of tolerance')

Drag options to blanks, or click blank then click option'

A==

B>

C<=

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<=' which reverses the logic.

Using '==' which is too strict for tolerance.

The absolute difference must be less than or equal to the tolerance to be acceptable.

3fill in blank

hard

Fix the error in the code that calculates the tolerance zone.

CNC Programming

upper_limit = target_value [1] tolerance
lower_limit = target_value - tolerance

Drag options to blanks, or click blank then click option'

A-

B+

C*

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-' for upper_limit which lowers the limit incorrectly.

Using '*' or '/' which are not correct for adding tolerance.

Upper limit adds tolerance, lower limit subtracts tolerance. The blank is for upper_limit only, so it should add tolerance.

4fill in blank

hard

Fill both blanks to calculate the tolerance zone limits correctly.

CNC Programming

upper_limit = target_value [1] tolerance
lower_limit = target_value [2] tolerance

Drag options to blanks, or click blank then click option'

A+

B-

C*

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using the same operator for both limits.

Using multiplication or division instead of addition or subtraction.

Upper limit adds tolerance, lower limit subtracts tolerance to define the acceptable range.

5fill in blank

hard

Fill all three blanks to create a dictionary of parts within tolerance.

CNC Programming

within_tolerance = {part_id: measurement for part_id, measurement in measurements.items() if abs(measurement [1] target_value) [2] [3]

Drag options to blanks, or click blank then click option'

A-

B<=

Ctolerance

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+' instead of '-' inside abs().

Using '>' instead of '<=' for comparison.

Using a number instead of the tolerance variable.

We subtract target_value from measurement, check if absolute difference is less than or equal to tolerance.