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G and M Codes

Total questions: 20

Worksheet time: 19mins

Name
Class
Date
1.

G17 G20 G40 G49 G80

What is this line of code for on the Milling Machine?

a)

Start-Up Line

b)

Power off

c)

Safety Line

d)

Program Start

2.

What does the code "G83" stand for?

a)

Spot face drill cycle

b)

Peck drill cycle

c)

Boring cycle

d)

Drill cycle

3.

"M00" is program stop

a)

True

b)

False

4.

What are the correct codes for a chamfer?

a)

G01 X___

b)

G01 Z___

c)

G01 X___ Y___

d)

G01 X___ Z___

5.

How do you align your tool on the lathe to center?

a)

Set tool center using the work in the chuck

b)

Using a dead center to align your tool

c)

Using the paper test

d)

Using a center tool

6.

How fast should the spindle be going if the work piece is is 9" in diameter and is made of aluminum?

Starting speed for aluminum is 300 sfpm.

a)

1200 rpm

b)

675

c)

2700

d)

133.33

7.

What model is our milling machine?

a)

TM-1P

b)

VF-2

c)

VF-1

d)

Mini Mill

8.

What does CNC stand for?

a)

Computerized Numerical Control

b)

Currently Not Collectible

c)

Condensation Nucleus Counter

d)

Certified Nutritional Consultant

9.

What was the first part we made on CNC?

a)

Multi Radius Axis 3.1

b)

Multi Axis 1.1

c)

Multi Chamfer Axis 2.1

d)

Multi Axis 1.2

10.

Indicating the spindle on the CNC lathe is similar to indication on the Manual Lathe

a)

False

b)

True

11.

What is the feed rate you should go with the following information?

2 Flute Carbide Endmill with a .75" diameter running at 5000 rpm with a chip load of .003.

a)

0.0045 IPM

b)

7500 IPM

c)

30.0 IPM

d)

-57.0 IPM

12.

What is the safest way to remove chips from the CNC lathe?

a)

Pressurized air

b)

Gloves

c)

A brush

d)

Bare hands

13.

Who used a center drill as an end mill during 11th grade?

a)

Marcos

b)

Kennedy

c)

Zach

d)

Big Z

14.

What is G53

a)

Work offset

b)

Machine Coordinate Positioning, Non-Modal

c)

Max Spindle Speed

d)

Metric Programming

15.

You can view all the G and M codes on the simulator?

a)

True

b)

False

16.

What should you do if you are injured?

a)

Tell your supervisor

b)

Keep it to yourself

c)

Tell your co-worker

d)

Fix the injury yourself

17.

What is G40?

a)

Tool Nose Compensation Cancel

b)

Tool Length Compensation Cancel

c)

Tool Length Compensation +

d)

Tool Nose Compensation Left

18.

Can you undo an "Erase Program"?

a)

No

b)

No its literally No

c)

No and its actually No

d)

Why is there even an Erase Program?

19.

How many Axis are on our lathe?

a)

2

b)

1

c)

0

d)

4

20.

How do you end a line in a CNC program?

a)

Use a :

b)

Use a ,

c)

Use a .

d)

Use a ;