CNC Final Review Questions &
Complete Solutions
What is the main advantage of rapid prototyping? - correct answer ✔✔Rapid prototyping allows
models to be quickly and accurately made from a CAD or solid model drawing.
Which of the following rapid prototyping process uses a liquid polymer in the process of
creating a prototype? - correct answer ✔✔Stereolithography.
Which drawing command would be the most efficient means to place a regularly spaced pattern
of 5 holes around a center point? - correct answer ✔✔Circular Pattern.
Most rapid prototyping processes are ______________ processes. - correct answer
✔✔additive.
What is the name of the rapid prototyping process that deposits molten plastic in a desired
pattern and then allows it to harden by cooling? - correct answer ✔✔Fused deposition
modeling.
When two line segments of a sketch fall on the same line, they are said to be
_________________. - correct answer ✔✔collinear
If the tool height offsets are the same for each tool, what will happen to a pocket being milled in
a block of material if a ¼" end mill is called out in the CAM software and a ½" diameter end mill
is used to machine the pocket? - correct answer ✔✔The pocket will be larger than desired.
Which of the following codes is most appropriately used with an M06 in the same line or block
of code? - correct answer ✔✔T10.
, When "homing" a robot or a CNC machine, which feedback device is used to indicate the
machine has reached the extent of its travel on an axis? - correct answer ✔✔Limit switch.
Which sequence of operations is most correct for the design and creation of precision parts? -
correct answer ✔✔Concept sketch, CAD Geometry, CAM analysis, G&M Code Post, Program
Verification, Program
Execution.
Which of the following devices uses signals from a CNC controller to precisely control its rate of
rotation and direction of rotation? - correct answer ✔✔Stepper motor.
Which of the following is an advantage of using CAM software over manually creating the G&M
code to machine a part? - correct answer ✔✔Cam software will always create a much more
efficient tool path than a person can.
The first industrial robots were used primarily to improve the quality of the products in which
industry? - correct answer ✔✔Automotive.
The first industrial robot was developed in the early 1960's, and was called
_________________. - correct answer ✔✔Unimate.
The maximum extent or reach of a robot in all direction is defined as its _________________. -
correct answer ✔✔work envelope.
A robot's ability to position its end effector at a specific point in space is defined as
________________________. - correct answer ✔✔accuracy.
Which type of robot programming moves a robot from position to position without regard for
the intermediate points in between? - correct answer ✔✔Point to Point.
Complete Solutions
What is the main advantage of rapid prototyping? - correct answer ✔✔Rapid prototyping allows
models to be quickly and accurately made from a CAD or solid model drawing.
Which of the following rapid prototyping process uses a liquid polymer in the process of
creating a prototype? - correct answer ✔✔Stereolithography.
Which drawing command would be the most efficient means to place a regularly spaced pattern
of 5 holes around a center point? - correct answer ✔✔Circular Pattern.
Most rapid prototyping processes are ______________ processes. - correct answer
✔✔additive.
What is the name of the rapid prototyping process that deposits molten plastic in a desired
pattern and then allows it to harden by cooling? - correct answer ✔✔Fused deposition
modeling.
When two line segments of a sketch fall on the same line, they are said to be
_________________. - correct answer ✔✔collinear
If the tool height offsets are the same for each tool, what will happen to a pocket being milled in
a block of material if a ¼" end mill is called out in the CAM software and a ½" diameter end mill
is used to machine the pocket? - correct answer ✔✔The pocket will be larger than desired.
Which of the following codes is most appropriately used with an M06 in the same line or block
of code? - correct answer ✔✔T10.
, When "homing" a robot or a CNC machine, which feedback device is used to indicate the
machine has reached the extent of its travel on an axis? - correct answer ✔✔Limit switch.
Which sequence of operations is most correct for the design and creation of precision parts? -
correct answer ✔✔Concept sketch, CAD Geometry, CAM analysis, G&M Code Post, Program
Verification, Program
Execution.
Which of the following devices uses signals from a CNC controller to precisely control its rate of
rotation and direction of rotation? - correct answer ✔✔Stepper motor.
Which of the following is an advantage of using CAM software over manually creating the G&M
code to machine a part? - correct answer ✔✔Cam software will always create a much more
efficient tool path than a person can.
The first industrial robots were used primarily to improve the quality of the products in which
industry? - correct answer ✔✔Automotive.
The first industrial robot was developed in the early 1960's, and was called
_________________. - correct answer ✔✔Unimate.
The maximum extent or reach of a robot in all direction is defined as its _________________. -
correct answer ✔✔work envelope.
A robot's ability to position its end effector at a specific point in space is defined as
________________________. - correct answer ✔✔accuracy.
Which type of robot programming moves a robot from position to position without regard for
the intermediate points in between? - correct answer ✔✔Point to Point.
