Question 1

The geometry of the finished workpiece will be the ultimate measure of the success or failure of your programming.

Accepted Answer

A) True 
 B)False  True

Question 2

Provide some guidelines for developing efficient workpiece setups.

Accepted Answer

In summary, the following guidelines will help you to develop setups that are more efficient: Follow the 3-2-1 locating principle when applicable. Use as few setups as possible. Eliminate preparatory and secondary operations if possible. Use off-the-shelf tooling when possible and build dedicated fixtures only as a last resort. Coordinate the raw material purchase with the process plan.

Question 3

The key to properly locating a workpiece is a principle called ____.

Accepted Answer

A)   3-2-1
B)   datum
C)   the primary principle
D)   referencing A

Question 4

What information should be included in the program's comments?

Accepted Answer

The answer of What information should be included in the...

Question 5

A(n) ____ is a reference plane or point that is defined on the engineering drawing from which other dimensions are established.

Accepted Answer

A)   address
B)   word
C)   letter
D)   datum

Question 6

The term ____ describes codes or values that stay active until changed by another code or value.

Accepted Answer

A)   word
B)   modal
C)   part program
D)   address

Question 7

We know from our study of the Cartesian coordinate system that any location in the first quadrant will have ____ coordinates.

Accepted Answer

A)   positive
B)   negative
C)   irrational
D)   imaginary

Question 8

What is the difference between modal and non-modal codes?

Accepted Answer

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

Question 9

Why do complicated drawings take so long to understand?

Accepted Answer

The answer of Why do complicated drawings take so long...

Question 10

In the end, it does not really matter where you put the work zero as long as it is kept in the proper relation to the locating surfaces.

Accepted Answer

A) True 
 B)False

Question 11

What are the two types of codes found in an NC part program?

Accepted Answer

The answer of What are the two types of codes...

Question 12

Most programs today are written on modern, PC-based computers with a text editor that makes it very easy to copy and paste redundant code and to make changes at will.

Accepted Answer

A) True 
 B)False

Question 13

____ pins are cylindrical pins that have been ground slightly oversized.

Accepted Answer

A)   Clearance
B)   Bearing
C)   Dowel
D)   Reaming

Question 14

Modern CNC machine tools can be programmed to perform machining operations with a language commonly referred to as H & N codes.

Accepted Answer

A) True 
 B)False

Question 15

Rough, cast, and saw-cut surfaces must usually be ____ before they can be used as locating surfaces.

Accepted Answer

A)   drilled
B)   qualified
C)   fixed
D)   curved

Question 16

On most raw materials, the stock faces are relatively flat and square from the mill.

Accepted Answer

A) True 
 B)False

Question 17

____ compensation automatically offsets the tool from the programmed path.

Accepted Answer

A)   Length
B)   Tool radius
C)   Drilling
D)   Cyclic

Question 18

Toolpaths are difficult to plot because we have to manually compensate for the ____ of the tool.

Accepted Answer

A)   volume
B)   material
C)   radius
D)   length

Question 19

The NC part program is made up of distinct units of instruction called ____.

Accepted Answer

A)   words
B)   addresses
C)   logistics
D)   blocks

Question 20

What is the first step in planning and executing a CNC machining job?

Accepted Answer

A)   Determining which tools are available
B)   Writing the part program
C)   Studying the workpiece drawing
D)   Planning the operations and setups

Exam 6: Programming Concepts and Job Planning

The geometry of the finished workpiece will be the ultimate measure of the success or failure of your programming.

Provide some guidelines for developing efficient workpiece setups.

The key to properly locating a workpiece is a principle called ____.

What information should be included in the program's comments?

A(n) ____ is a reference plane or point that is defined on the engineering drawing from which other dimensions are established.

The term ____ describes codes or values that stay active until changed by another code or value.

We know from our study of the Cartesian coordinate system that any location in the first quadrant will have ____ coordinates.

What is the difference between modal and non-modal codes?

Why do complicated drawings take so long to understand?

In the end, it does not really matter where you put the work zero as long as it is kept in the proper relation to the locating surfaces.

What are the two types of codes found in an NC part program?

Most programs today are written on modern, PC-based computers with a text editor that makes it very easy to copy and paste redundant code and to make changes at will.

____ pins are cylindrical pins that have been ground slightly oversized.

Modern CNC machine tools can be programmed to perform machining operations with a language commonly referred to as H & N codes.

Rough, cast, and saw-cut surfaces must usually be ____ before they can be used as locating surfaces.

On most raw materials, the stock faces are relatively flat and square from the mill.

____ compensation automatically offsets the tool from the programmed path.

Toolpaths are difficult to plot because we have to manually compensate for the ____ of the tool.

The NC part program is made up of distinct units of instruction called ____.

What is the first step in planning and executing a CNC machining job?