MANU 2653
In the inspection process, the measurement instrument should be ____ times more precise than the tolerance to be measured.
10
The twist drill was invented by Stephen Morse in what year?
1863
To hold odd-shaped parts, a face plate or ____ would be used.
4-jaw chuck
With PCBN tooling, cutting speeds and therefore MRR can be ___ times greater than cemented carbide tooling.
5
A spade drill is used for what drilling application?
???
Which of the following is NOT used to hold parts in the lathe?
C-clamp
Which of the following is not correct for coasted carbide tooling?
Casted carbides are used only in turning operations.
A hole saw would not be used in which of the following applications?
Drill a blind, 2" diameter hold in steel.
What is the 2nd step in the four steps needed to obtain an accurate hole in a workpiece?
Drilling
A gun drill is used for what applications?
Drilling holes with a depth to diameter ratio of up to 100:1
The compound rest can be used on the lathe to produce long tapers in the turning and boring of parts.
False
Tool made from high-speed tool steel are generally used for what type of machining operations?
Hand tools and low-volume machining operations
One feature of the drilling process is that is:
Has a high MMR
Specific horsepower can be defined as ___.
Horsepower/MRR
The most common measurement instrument in machining is:
Micrometer
What is the process called where the drill is fed into the work, removed slightly, fed again and the cycle repeated until the hole is finished?
Peck drilling
Which of the following parts of the lathe is NOT used to control the tooling movement on an engine lathe?
Spindle
What types of machines should be used for the turning of small, long slender parts?
Swiss screw machine
Machinability is ____
The ease with which material can be machined to an acceptable finish
ANSI's guide for specifying allowance and tolerance assumes______.
The hole size is considered as base
Which of the following does not apply to a horizontal boring machine?
The tooling and part rotate along a horizontal axis simultaneously
Newer cutting materials are placing new demands on machine tools and machining process including machining practices involving gentle entry and exit of the cut to prevent microchipping of the tool material.
True
The carriage on the lathe is an H-shaped which provides motion for the tooling
True
The cutting tool is the most critical part of the machining process.
True
Typically collets provide more accurate centering than a 3-jaw chuck
True
Which of the following statements is false for ceramics as a cutting tool material?
Used to machine high strength steel
The _____ are hardened, precision ground steel rails that run longitudinally along the top of the lathe bed.
Ways
The desired difference between the dimensions of two mating parts is called ____
allowance
Which of the following is not a machining process
casting
The three variables that are normally controlled in most machining processes are:
cutting speed, feed rate, depth of cut
The surface roughness from a part produced in a lathe can be decreased by ____.
decreasing the tool feed rate and increasing the tool corner radius
What is the process called that produces a flat surface perpendicular to the axis of rotation of the work piece?
facing
For the oblique machining process, the force acting in the direction of the tool feed is:
feed force
Taylor's tool life equation predicts tool failure based on ___ of the tool
flank wear
What is the process called that uses fixed size instruments to determine if a part has been machined within tolerance?
gaging
Which of the following is not a method to decrease or eliminate the formation of a built-up edge from a cutting tool?
increasing the depth of cut
The accurate longitudinal feed of the tooling for threading operations is provided by:
lead screw
Which of the following is NOT a base for machinability?
material properties?
Accuracy is the ________ spread in measurements made of slide movement during successive runs at a set of target points along an axis of the machine or tool.
maximum
Cermets are ceramic material in a ____ binder.
metal
The main advantage of turret lathes compared to an engine lathe is ____.
more tools can be set up for machining, thereby decreasing setup time and increasing machine productivity.
What is the process in which a thin tool is fed perpendicular to the axis of rotation of the work piece to remove the completed part form the stock?
parting
For the oblique machining process, the force acting in the direction of the cutting velocity vector is:
primary cutting force
For drilling holes in large, heavy parts what drill press could be used?
radial arm drill press
Traditional machining is the process of ____
removing unwanted material from a part in the form of chips
Chip formation involves a localized ___ process with large strains and high strain rate plastic deformations in a radial compression region that progresses ahead of the tool.
shearing process
The lathe size is specified what two parameters?
swing and distance between centers
Which of the following instruments would be used to perform hole gaging?
telescoping gage
The undesired but permissible deviation from a desired dimension is called?
tolerance
What is the most common type of drill bit?
twist drill
