Question 1

G49 confirms the tool length offset.

Accepted Answer

G49 is a G-code used in CNC machining to cancel the tool length offset, returning it to zero or its default value.

Question 2

Incremental systems are more difficult to program but less prone to operator error.

Accepted Answer

Incremental systems are designed to simplify programming by allowing changes to be made in small steps or increments, which reduces the complexity of the code. Additionally, incremental systems are more prone to operator error since the potential for errors increases with each increment.

Question 3

M____ is an unconditional program stop.
A) 00
B) 01
C) 10
D) 30

Accepted Answer

In most programming languages, 00 is the opcode for an unconditional program stop or halt instruction.

Question 4

____ and subprograms are a method of modularizing a NC program to make it more portable and easier to modify.
A) Spindles
B) Subcontrols
C) Subroutines
D) Subchapters

Accepted Answer

Subroutines (also known as subprograms or subroutines) are a way to break down a large NC program into smaller, more manageable sections that can be easily modified or reused in other programs. This can make the program more portable across different machines or applications. Options A, B, and D are not related to modularizing NC programs in this way.

Question 5

An M-code comprises the ____ address followed by ____.
A) M, a number
B) M, a G-code
C) G, a number
D) G, a G-code

Accepted Answer

An M-code always starts with the letter "M" followed by a number. These codes are used to control miscellaneous functions such as turning the spindle on/off, starting/stopping coolant flow, and changing tool offsets.

Question 6

M____ is the most common code used to signify to the control that the program has ended.
A) 00
B) 02
C) 10
D) 30

Accepted Answer

The answer of M____ is the most common code used...

Question 7

What is an oriented spindle stop?

Accepted Answer

The answer of What is an oriented spindle stop?...

Question 8

M-codes are called in a similar manner to G-codes.

Accepted Answer

M-codes are called in a similar manner to G-codes using the format "M" followed by a number or number sequence.

Question 9

Block delete actually deletes the lines within the program.

Accepted Answer

Block delete, often found in CNC (Computer Numerical Control) programming, does not delete lines within the program. Instead, it allows the machine to ignore certain lines of code based on the activation of the block delete switch, enabling conditional execution of parts of the program without physically removing any code.

Question 10

What is the difference between M02 and M30?

Accepted Answer

The answer of What is the difference between M02 and...

Question 11

The only difference between M03 and M04 is the ____.
A) speed of rotation
B) direction of rotation
C) linearity of movement
D) power supply

Accepted Answer

The question suggests that M03 and M04 are both rotary motors since they have a speed of rotation. The linearity of movement is not applicable to rotary motors. The power supply may differ, but it is not specified as the only difference between the two motors. Therefore, the only difference is the direction of rotation, making B the correct choice.

Question 12

Most modern CNC machine tools are equipped with an ____ (ATC) to eliminate manual operator intervention.
A) automatic tool channel
B) automatic telecharger
C) automatic tool changer
D) automatic traffic channel

Accepted Answer

An automatic tool changer (ATC) is a feature found in modern CNC machine tools that eliminates the need for manual operator intervention to change tools. Through an ATC, machines can have a library of tools readily available to be loaded and unloaded as needed to complete a job. Choice A is incorrect because there is no such thing as an automatic tool channel. Choice B is incorrect because an automatic telecharger is not a term used in the context of CNC machine tools. Choice D is incorrect because an automatic traffic channel is not a term used in the context of CNC machine tools.

Question 13

Discuss the traveling storage device configuration.

Accepted Answer

The answer of Discuss the traveling storage device configuration....

Question 14

What do you have to provide the spindle with before it will turn on?

Accepted Answer

The answer of What do you have to provide the...

Question 15

How are M-codes called?

Accepted Answer

The answer of How are M-codes called?...

Question 16

M08 is the general code for turning on the ____ system.
A) spindle
B) coolant
C) rotational
D) tool selection

Accepted Answer

M08 is the G-code used to turn on the coolant system.

Question 17

Virtually all end mills, drills, and similar tools you will encounter are ____-handed and consequently use M0____.
A) right, 3
B) right, 4
C) left, 3
D) left, 4

Accepted Answer

Virtually all end mills, drills, and similar tools are right-handed and use M03, so the correct choice is A, which states that they are right-handed and use M03.

Question 18

Block delete is accomplished by placing a(n) ____ at the beginning of a line
A) .(
B) .)
C) .\
D) ./

Accepted Answer

The answer of Block delete is accomplished by placing a(n)...

Question 19

Tool changes are accomplished by calling the M0____ code.
A) 0
B) 2
C) 4
D) 6

Accepted Answer

The M06 code is used in CNC programming to initiate a tool change.

Question 20

Some machines will automatically select a gear range based on the programmed spindle speed.

Accepted Answer

Some machines, such as CNC machines, will automatically select a gear range based on the programmed spindle speed to ensure optimal performance and accuracy.

Quiz 8: Basic Codes to Control Machine Functions

G49 confirms the tool length offset.

Incremental systems are more difficult to program but less prone to operator error.

M____ is an unconditional program stop.

____ and subprograms are a method of modularizing a NC program to make it more portable and easier to modify.

An M-code comprises the address followed by .

M____ is the most common code used to signify to the control that the program has ended.

What is an oriented spindle stop?

M-codes are called in a similar manner to G-codes.

Block delete actually deletes the lines within the program.

What is the difference between M02 and M30?

The only difference between M03 and M04 is the ____.

Most modern CNC machine tools are equipped with an ____ (ATC) to eliminate manual operator intervention.

Discuss the traveling storage device configuration.

What do you have to provide the spindle with before it will turn on?

How are M-codes called?

M08 is the general code for turning on the ____ system.

Virtually all end mills, drills, and similar tools you will encounter are -handed and consequently use M0.

Block delete is accomplished by placing a(n) ____ at the beginning of a line

Tool changes are accomplished by calling the M0____ code.

Some machines will automatically select a gear range based on the programmed spindle speed.