Why milling operations shape raw material in CNC Programming - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the milling operation by setting the spindle speed.

CNC Programming

M03 S[1]

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

AM05

BG01

CX100

D1200

Attempts:

3 left

💡 Hint

Common Mistakes

Using M05 which stops the spindle instead of setting speed.

Using G01 which is a movement command, not spindle speed.

Using X100 which is a position, not speed.

The spindle speed is set with 'S' followed by the speed value, like 1200 RPM.

2fill in blank

medium

Complete the code to move the milling tool to the starting position on the X axis.

CNC Programming

G01 X[1] F100

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

AG00

B50

CF200

DY50

Attempts:

3 left

💡 Hint

Common Mistakes

Putting Y50 which is a different axis.

Using F200 which is feed rate, not position.

Using G00 which is a command, not a position value.

The X coordinate value should be a number like 50 to move the tool to X=50.

3fill in blank

hard

Fix the error in the code to correctly stop the spindle after milling.

CNC Programming

M[1]

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

A05

B04

C03

D01

Attempts:

3 left

💡 Hint

Common Mistakes

Using M03 which starts the spindle instead of stopping.

Using M04 which starts spindle counterclockwise.

Using M01 which is optional stop, not spindle stop.

M05 is the correct command to stop the spindle in CNC programming.

4fill in blank

hard

Fill both blanks to create a loop that mills multiple passes at different depths.

CNC Programming

for depth in range(0, [1], [2]):
    print(f"G01 Z-{depth}")

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

A10

B2

C5

D20

Attempts:

3 left

💡 Hint

Common Mistakes

Using a step size larger than max depth.

Using a max depth smaller than step size.

Confusing the order of max depth and step size.

The loop goes from 0 to 20 in steps of 5 to mill at depths 0, 5, 10, 15.

5fill in blank

hard

Fill all three blanks to create a dictionary mapping tool names to their speeds.

CNC Programming

tools = {"[1]": [2], "[3]": 1500}

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

Aendmill

B1200

Cdrill

Dfeed_rate

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names instead of strings for keys.

Using feed_rate as a key instead of a tool name.

Mixing up keys and values.

The dictionary maps 'endmill' to 1200 (speed) and 'drill' to 1500 (speed).