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CNC introduction

Total questions: 13

Worksheet time: 9mins

Name
Class
Date
1.

What does CNC stand for

a)

Computer Numerical Control

b)

Computer Number Control

c)

Computer Numerical Continue

d)

Computer Number Continue

2.

Name a hazard associated with using a CNC machine

4 lines
3.

State the basic axis in CNC Milling machine.

a)

V,W,X

b)

U,Y,Z

c)

X,Y,Z

d)

U,V,W

4.

How many axis do CNC milling machines generally operate on?

a)

1 or 2

b)

3 or 6

c)

2 or 3

d)

3 or 5

5.

Milling machines work by?

a)

Rotating a tool/bit which comes into contact with material.

b)

Rotating material which comes into contact with a stationary cutter or tool.

6.

Advantage of CNC Milling machine

a)

expensive

b)

consistent

c)

accurate

d)

non skill operator

e)

safe

7.

for the CNC milling machine the G Code G90 mean

a)

Workpiece co-ordinate setting

b)

Absolute dimensioning system

c)

Feed rate programming in mm/min.

d)

Cutter radius compensation OFF

8.

Code that has a straight line / linear movement ( in a straight line)

a)

G01

b)

G02

c)

G03

d)

G00

9.
Code that sets the distance mode which will always be set to  X0 and Y0
a)
G01
b)
G00
c)
G90
d)
G91
10.
Code that sets the distance mode so that  current position is a the new zero
a)
G01
b)
G00
c)
G90
d)
G91
11.

Which of these is a MILLING MACHINE?

a)
b)
c)
d)
12.

What is the correct name for items like these in the workshop?

a)

PEP

b)

PPE

c)

EPP

d)

EYE

13.

What is the name of this workshop machine?

a)

Fumes extractor

b)

Vacuum former

c)

CNC Milling machine

d)

CNC drill

e)

Painting booth