3D surface machining basics in CNC Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the spindle in clockwise direction.

CNC Programming

M3 S[1]

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

AG1

BM5

C1000

DM4

Attempts:

3 left

💡 Hint

Common Mistakes

Using M5 which stops the spindle instead of starting it.

Confusing spindle commands with movement commands like G1.

M3 starts the spindle clockwise and S sets the spindle speed in RPM.

2fill in blank

medium

Complete the code to move the tool to X=50, Y=25, Z=10 in a straight line.

CNC Programming

G1 X[1] Y25 Z10 F200

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

A25

B50

C100

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong X coordinate values.

Confusing G1 with G0 which is rapid movement.

G1 moves the tool in a straight line to the specified coordinates. X=50 is the correct X position.

3fill in blank

hard

Fix the error in the code to correctly define a 3D surface machining path.

CNC Programming

G1 X[1] Y20 Z-5 F150

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

A30

Btwenty

C10

DX20

Attempts:

3 left

💡 Hint

Common Mistakes

Using words like 'twenty' instead of numbers.

Including extra letters like 'X' in the coordinate value.

Coordinates must be numeric values without extra text. 30 is a valid X coordinate.

4fill in blank

hard

Fill both blanks to create a feed rate and spindle speed setting.

CNC Programming

F[1] S[2]

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

A150

B1000

C2000

D300

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing feed rate and spindle speed values.

Using unrealistic values for feed or spindle speed.

F sets the feed rate (150 mm/min) and S sets the spindle speed (1000 RPM).

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps axis names to their positions if position is above zero.

CNC Programming

{'X': [1], 'Y': [2], 'Z': [3] if [3] > 0 else 0}

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

Ax_pos

By_pos

Cz_pos

Dpos

Attempts:

3 left

💡 Hint

Common Mistakes

Using the same variable for all axes.

Not applying the condition correctly for Z axis.

Each axis key maps to its respective position variable: x_pos, y_pos, and z_pos. The condition checks if z_pos is above zero.