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IME 146 Final Study Guide Questions
and Answers 100% Pass
Prior to the creation of CNC machines, drilling holes in material was done by: - ✔✔Handheld manual
drilling braces with auger bits
With the use of electric, handheld drills, the operator still controls the quality of the hole being drilled. -
✔✔True
A common name used for the manual milling machines is: - ✔✔Bridgeport milling machine
A manual milling machine is different from a drill press, because it has handles that move the table side
to side and up and down? - ✔✔True
On the manual milling machine, one of the primary cutting tools is: - ✔✔An endmill
On a manual milling machine, the operator does not need to be precise with the handle movements to
control the distance and the depth of each cut? - ✔✔False
The CNC machine was created to provide accurate production parts. What does CNC stand for? -
✔✔Computer Numerical Control
On CNC equipment, the machine is following a program that tells the machine what to do. - ✔✔True
One of the most popular machines that Haas builds today is: - ✔✔VF-2
The CNC machine allows modern manufacturing to make essentially identical parts repeatedly. This
concept is known as Component or Part Interchangeability - ✔✔True
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An important element of a CNC machine is that the parts made today, will be identical to the parts made
yesterday, for any one program being run in the machine. - ✔✔True
When the part being made is going to be rectangular in shape, the shape of the raw material from which
the part will be made most likely is? - ✔✔Rectangular stock
It is not important to do a quick check on the raw material for basic shape and overall size to make sure
the material is correct. - ✔✔False
When we say the machine is "set up," we mean: - ✔✔The machine is prepared to make a particular part
Once the machine is set up, and the machine knows where the vise, tools, and workpiece are, we need a
_________________ to get started. - ✔✔A CNC program to be loaded into the machine to tell the machine
what to do
When it is time to get started running parts, which four items are best matched to the correct steps? -
✔✔Load the raw material, keep it square, reference the part stop, and tighten the vise
It is very important that the operator watch the first part being machined. - ✔✔True
If the operator hears a strange noise coming from the machine, it is recommended to: - ✔✔Press Feed
Hold and get the Supervisor
There are a variety of cutting tools used in a CNC machine. The function of the face mill is? - ✔✔To make
the top of the workpiece very flat, and prepare it for additional machining
Another popular cutting tool for CNC machining is the end mill. The primary function of an end mill is
for profiling a part, or creating pockets in a part. - ✔✔True
Two more cutting tools that the machinist commonly uses are the drill and the tap. These tools often
work in combination, first to drill the holes, and then to tap the holes. - ✔✔True
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When the part is complete, what are the next steps that the operator will take? - ✔✔Open the doors,
loosen the vise and blow the part off with the airgun
The benefit of a CNC machine comes into play in production, because we can keep making the same part,
one after the other, until we have made as many as we need. - ✔✔True
When the first part is completed, the Operator needs to load the next blank into the vise. What are the
steps the Operator will take? - ✔✔The Operator loads the next blank, makes sure it is correctly seated in
the vise, tightens the vise, closes the machine doors, and then hits Cycle Start
The basic milling machine is capable of moving in how many directions? - ✔✔3 directions or axes
When the machine moves, we describe the machine as moving in a specific axis. What direction is the X-
axis movement? - ✔✔Side to side
The Machine Coordinate System defines where the axes can move, and how far they have moved. -
✔✔True
The 3 axes are X, Y, and Z. When all 3 axes are at 0.000 in the Machine Coordinate System, we call that
position: - ✔✔The Home Position
When the table is positioned with both X and Y axes at the Zero position, table movement in either the X
or the Y axis is in the positive direction. - ✔✔False
For the Z axis, the Zero position is with the spindle all the way up, or at the top of travel. When the
spindle is moved down, toward the table, the machine coordinate system for the Z axis gets more
negative. - ✔✔True
The Work Coordinate System tells the machine where the workpiece and the tools are, in relation to the
Machine Coordinate System. - ✔✔True
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