Exam 3-Mech 2653
In surface roughness measurement, the standard cut-off length is ___. A. 0.100" B. 0.050" C. 0.020" D. 0.0100"
0.030"
In surface roughness measurement, the standard cut-off length is ____.
0.030"
A micrometer has a measurement range of ____ between it's anvils
1"
A spade drill is used for what drilling application?
1" and larger diameter holes in thick materials
A spade drill is used for what drilling application?
1" and larger holes in thick materials
A spade drill is used for what drilling application? A .1" and larger holes in thick materials B. 1" and smaller holes C. deep holes D. 1" and larger holes in thin materials (1/16" and less thickness)
1" and larger holes in thick materials
A spade drill is used for what drilling application?
1' and larger diameter holes in thick material
Identify the parts of a lathe
1. Bed 2. Lead screw 3. tailshock 4. carrage 5. ways 6. spindle 7. headstock 8. gear box 9. compound rest
From the following list, select four reasons for machining a part.
1. To produce unique features; i.e. threads, o-ring gooves, sharp edges, grooves in a part. 2. To produce a prototype of a part. 3. To produce flat, smooth surfaces for mating parts so that they can seal. 4. To make a finished hole in a part that is true along an axis.
The tail stock moves _________ and the _________ is housed in the upper casting of the tail stock and moves _________ to the bed with a hand wheel.
1. along the ways 2. quill 3. longitudinally
The size of a lathe is specified by two parameters, which are ______ and _________.
1. distance between centers 2. swing
What holds parts in the lathe?
1. face plate 2. collet 3. centers 4. chuck NOT c-clamp
The spindle is a ________ which supplies the rotational motion to the _____________.
1. hollow shaft 2. work piece
Select the three variables that are normally controlled in the machining process.
1. speed 2. feed rate 3. depth of cut
The lathe head stock provides ________ and ___________.
1. speed selection for the spindle 2. housing for the spindle
When machining long, slender parts to reduce the deflection of the work piece a __________ or a _____________ can be used to support the part.
1. steady rest 2. follow rest
In the inspection process, the measurement instrument should be ___ times more precise than the tolerance to be measured.
10
In the inspection process, the measurement instrument should be ___ times more precise than the tolerance to be measured. A. 2 B. 5 C.10 D. 100
10
The point angle is most often ground at a angle of _____ degrees.
118
The point angle is most often ground at an angle of ___ degrees. A. 135 B.118 C. 95 D. 100 E. 150
118
The point angle is most often ground at an angle of ____ degrees.
118
A point angle of ___ degrees is often used to drill more ductile materials. A. 150 B. 110 C. 135 D. 120
135
A point angle of ____ degrees is often used to drill more ductile materials.
135
A point angle of _______ degrees is often used to drill more ductile materials.
135
A major contribution to the lathe was the carriage in __________________.
1800
A major contribution to the lathe was the slide carriage in ___. A . 1650 B. 1800 C. 1905 D. 1776
1800
A major contribution to the lathe was the slide carriage in _______.
1800
Coated carbides have an increased tool life of ___. A. 50-75% B. 500% or more C. 200-300% D. 100-150%
200-300%
Coated carbides have an increased tool life of ____.
200-300%
Drilling makes up about ___ % of all machining opeations.
25
Drilling makes up about ____% of all machining operations. A. 25 B. 20 C. 10 D. 35 E. 30
25
Drilling makes up about _______ % of all machining operations.
25
Drilling makes up about ___ % of all machining operations.
25%
When PCBN tooling, cutting speeds and therefore MRR can be ___ times greater than cemented carbide tooling A. 30 B. 20 C. 10 D. 5 E. 2
5
With PCBN tooling, cutting speeds and therefore MRR can be ____ times greater than a cemented carbide tooling
5
What percentage of the total energy of the machining process goes into the shearing process?
60-70%
What percentage of the total energy of the machining process goes into the shearing process? A. 30-40% B. 40-50% C. 50-60% D. 60-70%
60-70%
Approximately % of carbide tools are coated, commonly by process.
85 - 90 chemical vapor desposition
Approximately ___% of carbide tools are coated, commonly by the ___ vapor deposition process. A. 90 to 100 B. 85 to 90 C. 60 to 75 D. Chemical E. Physical F. Electron
85 to 90 Chemical
Approximately ____ % of carbide tools are coated, commonly by the ____ vapor deposition process.
85 to 90, chemical
Which of the following statements is false regarding drilling and hole making related processes
A hole produced by a twist drill bit will be concentric
Rough cutting on the lathe involves cutting with
A large depth of cut and a slow feed rate
The desired difference between the dimensions of two mating parts is called ____. A. Allowance B. Interference C. Clearance
Allowance
Machinery used for drilling holes in structural steel is
Beam drill line
Screw machine makes:
Bobbin for electronics industry, pin for defense industry, swirler- fire extinguisher industry, bone crew- medical ind, contact pin electronis ind, tripwire pin def. ind., probe tip with through hole NOT engine piston pin
Which of the following processes cannot be performed on a lathe? (mark all that apply)
Broaching, Gear hobbing
What type of machine should be used for the turning of small, long slender parts?
Brown and Sharpe screw machine Swiss screw machine
Which of the following is NOT used to hold parts in the lathe?
C-clamp
Which of the following is not a machining process?
Casting
Which of the following is not a machining process? A. Drilling B. Grinding C. Turning D. Broaching E. Milling F. Shaping G. Casting H. Sawing
Casting
Which of the following is not correct for coated carbide tooling? A. Coated carbides are used only in turning operations B. It should be the first material considered for a machining operation. C. The coating can be a single layer or multiple layers of very thin material. D. The coating materials are selected to improve various properties for the tooling to improve performance of the cutting tool
Coated carbides are used only in turning operations
Which of the following is not correct for coated carbide tooling?
Coated carbides are used only in turning operations.
Cutting fluids are used primarily as ____. A. Rust prevention agents B. Lubricants C. Coolants D. Flushing agents
Coolants
The machine used to reverse engineer parts and perform inspection of parts in 3-D space is ___. A. Laser interferometer B. Robotic measurement machine C. Caliper D. Coordinate measurement machine
Coordinate measurement machine
The machine used to reverse engineer parts and perform inspection of parts in 3-D space is ____.
Coordinate measurement machine
Select the three variables that are normally controlled in the machining process. A. Part material B. Depth of cut C. Speed D. Temperature of the tooling E. Feed rate F. Work holding devices G. Temperature of the part H. Cutting fluid I. Machine tool horsepower
Depth of cut speed feed rate
Which of the following is not a basic chip type? A. Continuous with built-up edge B. Continuous C. Discontinuous D. Discontinuous with built-up edge
Discontinuous with built up edge
The size of a lathe is specified by two parameters, which are ___ and ___. A. drive motor horsepower B. spindle diameter C. distance between centers D. bed length E. bed width F. swing
Distance between centers swing
A hole saw would not be used in which of the following applications?
Drill a blind, 2" diameter hole in steel.
By mounting a ___ in the lathe tailstock, holes can be produced in the part.
Drill bit
A gun drill is used for what applications?
Drilling deep holes
Which of the following is not an item produced by a screw machine as listed on the website:
Engine piston pin
Which of the following is not an item produced by a screw machine as listed on the website: https://www.coxmanufacturing.com/product-gallery (Links to an external site.)Links to an external site. ?
Engine piston pin
Turning is a machining operation that rotates the work piece about an axis and material is removed from the _____________ of the part.
External surface
What is the process called that produces a flat surface perpendicular to the axis of rotation of the work piece?
Facing
What is the process called that produces a flat surface perpendicular to the axis of rotation of the work piece? A. Knurling B. Boring C. Facing D. Turning
Facing
___ is an operation that produces a flat surface by feeding a tool across the end of the work piece
Facing
Collets have a wide range of sizes that they can hold.
False
Collets have a wide range of sizes that they can hold. True or False?
False
The compound rest can be used on the lathe to produce long tapers in the turning and boring of parts.
False
The compound rest can be used on the lathe to produce long tapers in the turning and boring parts. True or False?
False
With a horizontal boring machine, the part and the tooling are rotated around a horizontal axis simultaneously.
False
With a horizontal boring machine, the part and the tooling are rotated around a horizontal axis simultaneously. True or False?
False
For the oblique machining process, match the listed forces and descriptions: Force acting in the direction of the tool feed A. Radial force B. Primary cutting force C. Feed Force D. Tangential force
Feed Force
The body of the drill contains two or more helical gooves call _____ for chip removal.
Flutes
When machining long, slender parts to reduce the deflection of the work piece a ___ and a ___ can be used to support the part. A. tracer attachment B. follow rest C. steady rest D. tool rest E. carriage rest
Follow rest steady rest
For the oblique machining process, match the listed forces and descriptions.
Force acting in the direction of the tool feed- feed force Force acting perpendicular to the machined surface.- radial force Force acting in the direction of the cutting velocity vector- primary cutting force
Go/No-Go Gage Dial Caliper Measurement Tool Makers Microscope Screw Thread Pitch Gage Height Gauge Micrometer Profilometer
G M M G M M M
Identify for each of the following whether the device is used for measurement or gaging. Be careful- the name does not always tell you. Go/No-Go Plug gage A. Measurement B. Gaging
Gaging
What is the process called that uses fixed size instruments to determine if a part has been machined within tolerance? A. Sizing B. Calibrating C. Measurement D. Gaging
Gaging
Which of the following processes cannot be performed on a lathe? (mark all that apply)
Gear hobbing Broaching
Power for the lead screw and the feed rod are provided by the ___.
Gearbox
PCBN and diamonds are extremely hard but brittle materials, placing new demands on machine tools and machining processes. These demands include the following: Machining practices involving ___ entry and exit of the cut to prevent microchipping of the tool material. A. Flexible B. Gentle C. General-purpose D. High-precision E. Quicker F. Rigid G. Feed rates H. Spindle Speeds
Gentle
Identify for each of the following whether the device is used for measurement or gaging. Be careful - the name does not always tell you.
Go/No-Go Plug gage- gaging Dial Caliper- measurement Tool makers microscope- measurement Screw thread pitch gage- gaging Height Gage- measurement Surface roughness instrument- measurement micrometer- measurement
Which of the following is not a material for drill bits?
HSS with Al2O3 coating
Which of the following is not a material for drill bits? A. Carbide inserts B. HSS with Al2O3 coating C. HSS with TiN coating D. HSS E. Solid carbide
HSS with Al2O3 coating
Which of the following is not a material used for drill bits?
HSS with Al2O3 coating
Tools made from high speed tool steel are generally used for what type of machining operations? A. High-speed finishing operations B. Hand tools and low-volume machining operations C. High-speed machining operations D. Rough cut machining operations
Hand tools and low volume machining operations
Tools made from high-speed tool steel are generally used for what type of machining operations?
Hand tools and low-volume machining operations
The angle that the flutes make with the center line of the drill is called:
Helix Angle
The angle that the flutes make with the center line of the drill is called:
Helix angle
Continuous chips are formed with ___ ductile materials. A. Low B. High C. both, high and low
High
PCBN and diamonds are extremely hard but brittle materials, placing new demands on machine tools and machining processes. These demands include the following: The use of ___ machine tools, because these tool materials are capable of producing higher quality finishes and machining to greater accuracy. A. Flexible B. Gentle C. General-purpose D. High-precision E. Quicker F. Rigid G. Feed rates H. Spindle Speeds
High-precision
What type of machine would be used to do boring on large parts that cannot be turned in a engine lathe?
Horizontal boring machine
What type of machine would be used to do boring on large parts that cannot be turned in an engine lathe?
Horizontal boring machine
Specific horsepower can be defined as ____. A. Horsepower X MRR B. Horsepower/ cutting time C. Horsepower X cutting time D. Horsepower/ MRR
Horsepower/ MRR
Specific horsepower can be defined as ____.
Horsepower/MRR
The lathe head stock provides ___ and ___. A. housing for the spindle B. speed selection for the spindle C. motion for the tooling D. power for the feed rod and lead screw
Housing for the spindle Speed selection for the spindle
which of the following statements applies to the conventional chisel edge of a twist drill
If forms a small hole at the center of the hole location as part of the hole drilling operation
Select the statement that is false for the chisel edge of a twist drill.
If tends to be self-centering.
Which of the following is not a method to decrease or eliminate the formation of a built up edge from a cutting tool? A. increasing the depth of cut B. Changing the cutting tool materials C. Adding coolant D. Using positive rake tooling E. Altering the cutting speed
Increasing the depth of cut
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 the cut
which of the following statements applies to the carriage of an engine lathe
It is an H-shaped casting which travels on the lathe ways, the apron is mounted to it, it provides motion to the tooling along the axis of rotation for the lathe
Which of the following statements is false for producing holes by trepanning?
It is used only in mass-production operations.
Select the statement that is false for the chisel edge of a twist drill.
It tends to be self centering
What is the process called that produces a raised diamond pattern on the surface of the part by a cold forming process?
Knurling
Match the description and terms with regard to surface measurement. The direction of the predominant surface pattern produced by the machining process. A. Peak to peak value B. Lay C. Waviness D. Surface roughness
Lay
The accurate longitudinal feed of the tooling for threading operations is provided by ?
Lead screw
Cutting fluids are used secondarily as ___. A. Rust Prevention agents B. Coolants C. Flushing agents D. Lubricants
Lubricants
The tooling for the lathe is mounted on the tool post, which mounts on the __________, which is mounted to the _________, which is part of the carriage assembly.
MY answers: 1. compound rest 2. cross-slide possible: 1. apron, cross-slide, compound rest, follow rest 2. cross-slide, follow rest, steady test, tail stock
During the drilling operation, the drill is guided in the hole by the _____ rubbing against the walls of the hole.
Margins
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. A. Maximum B. Mean C. Minimum D. Median
Maximum
Identify for each of the following whether the device is used for measurement or gaging. Be careful- the name does not always tell you. Dial Caliper A. Measurement B. Gaging
Measurement
Identify for each of the following whether the device is used for measurement or gaging. Be careful- the name does not always tell you. Tool makers microscope A. Measurement B. Gaging
Measurement
Which machining process has generally replaced shaping?
Milling
Which machining process has generally replaced shaping? A. Milling B. Broaching C. Sawing D. Turning
Milling
What is the name of a drilling machine with multiple spindles that produces multiple holes simultaneously in a work piece?
Multi-spindle drill head
What is a the name of a drilling machine with multiple spindles that produces multiple holes simultaneously in a work piece?
Multispindle Drill Head
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 from the stock?
Parting off
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 of the stock? A. Parting off B. turning C. Facing D. Knurling
Parting off
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 materials is NOT used for gage blocks? A. Polished stainless steel B. Hardened, ground and polished steel C. Ceramic D. Carbide
Polished stainless steel
For the oblique machining process, match the listed forces and descriptions: Force acting in the direction of the cutting velocity vector A. Radial force B. Primary cutting force C. Feed Force D. Tangential force
Primary cutting force
A machine used to drill holes in large, heavy parts in low volume operations is a
Radial arm drill press
For the oblique machining process, match the listed forces and descriptions: Force acting perpendicular to the machined surface A. Radial force B. Primary cutting force C. Feed Force D. Tangential force
Radial force
Traditional machining is the process of ___. A. adding material to a part in the form of chips B. Removing material from a part using a laser C. Removing material from a part using robots D. Removing unwanted material from a part in the form of chips
Removing unwanted material from a part in the form of chips
PCBN and diamonds are extremely hard but brittle materials, placing new demands on machine tools and machining processes. These demands include the following: The use of more ___ machine tools. A. Flexible B. Gentle C. General-purpose D. High-precision E. Quicker F. Rigid G. Feed rates H. Spindle Speeds
Rigid
Chip formation involves a localized ___ process with ___ strains and high strain rate plastic deformations in a radial ___ region that progresses ahead of the tool.
Shearing, large, compression
Tool failure can be classified into two categories: ____ death and ___ death A. Microchip B. fast C. Erosion D. Slow E. Sudden
Slow Sudden
Collets are used to hold____ in a lathe.
Smooth parts
PCBN and diamonds are extremely hard but brittle materials, placing new demands on machine tools and machining processes. These demands include the following: The use of machine tools with high power, becauase these tool materials are capable of higher MRR and higher ___. A. Flexible B. Gentle C. General-purpose D. High-precision E. Quicker F. Rigid G. Feed rates H. Spindle Speeds
Spindle speeds
The mathematical quantity associated with precision for a device is ____. A. Standrd deviation B. Median C. Root mean square D. Mean
Standard deviation
The twist drill was invented in 1863 by whom?
Stephen Morse
Match the description and terms with regard to surface measurement. Finely spaced surface irregularity from the machining operations. A. Peak to peak value B. Lay C. Waviness D. Surface roughness
Surface roughness
Which of the following processes are gage blocks are not used for? A. Surface roughness measurement B. Tool setup C. Layout work D. Instrument calibration
Surface roughness measurement
What types of machines should be used for the turning of small, long slender parts?
Swiss screw machine Brown and Sharpe screw machine
What types of machines should be used for the turning of small, long slender parts?
Swiss screw machine, Brown and Sharpe screw machine
Measurement is a process by which calibrated instruments are used to determine what?
The actual dimensions of the completed part
Measurement is a process by which calibrated instruments are used to determine what? A. That the part is machined from the specified material B. That the part is completed and placed into inventory C. That the part is machined within tolerance D. The actual dimensions of the completed part
The actual dimensions of the completed part
ANSI's guide for specifying allowance and tolerance assumes ___. A. The hole size is considered as base. B. The shaft size is considered as base. C. Both the shaft and hole size are considered as base. D. nothing
The hole size is considered as base.
ANSI's guide for specifying allowance and tolerance assumes______.
The hole size is considered as base.
Which of the following statements is false for the reaming process?
The process will make the hole concentric with an axis of rotation.
PCBN and diamonds are extremely hard but brittle materials, placing new demands on machine tools and machining processes. These demands include the following.
The use of more ____ machine tools. (Rigid) Machining practices involving ____ entry and exit of the cut to prevent microchipping of the tool material. (Gentle) The use of ____ machine tools, because these tool materials are capable of producing higher quality finishes and machining to greater accuracy. (precision) The use of machine tools with high power, because these tool materials are capable of higher MRR and higher _____. (spindle speeds)
Which of the following statements is false for discontinuous chips? A. They are formed when brittle materials are machined B. They will produce a poorer surface finish on the part C. They are generated using cutting tools with small rake angles. D. They are formed when machining at high cutting speeds and fine feed rates
They are formed when machining at high cutting speeds and fine feed rates
Which of the following statements is false for discontinuous chips?
They are formed when machining at high cutting speeds and fine feed rates.
From the following list, select four reasons for machining a part.
To make a finished hole in a part that is true along an axis. To produce unique features; i.e. threads, o-ring grooves, sharp edges, grooves in a part. To produce a prototype of a part. To produce flat, smooth surfaces for mating parts so that they can seal.
From the following list, select four reasons for machining a part. A. To produce flat, smooth surfaces for mating parts so that they can seal. B. To produce a prototype of a part. C. To create a rough and uneven surface D. To add material to a part E. To produce unique features; ie threads, o-ring grooves, sharp edges, grooves in a part. F. To make a finished hole in a part that is true along an axis.
To produce flat, smooth surfaces for mating parts so that they can seal. To produce a prototype of a part. To produce unique features; ie threads, o-ring grooves, sharp edges, grooves in a part. To make a finished hole in a part that is true along an axis.
The undesired but permissible deviation from a desired dimension is called ___. A. Tolerance B. Interference C. Accuracy D. Precision
Tolerance
Which of the following is NOT a base for machinability? A. tool life B. Tool temperature C. Material properties D. Cutting speed
Tool Temperature
A vertical boring machine is typically used with large parts and the part is rotated around a vertical axis. True or False
True
A vertical boring machine is typically used with large parts, and the part is rotated around a vertical axis.
True
The carriage on the lathe is an H-shaped casting which provides motion for the tooling.
True
The carriage on the lathe is an H-shaped casting which provides motion for the tooling. True or False?
True
The center line of the tail stock quill is adjustable relative to the lathe center line.
True
The centerline of the tailstock quill is adjustable relative to the lathe centerline.
True
The centerline of the tailstock quill is adjustable relative to the lathe centerline. True or False
True
The cutting tool is the most critical part of the machining process.
True
The cutting tool is the most critical part of the machining process. True or False?
True
The drill process is has a high MRR.
True
The drill process is has a high MRR. True or False?
True
Typically collets provide more accurate centering than a 3-jaw chuck.
True
Typically collets provide more accurate centering than a 3-jaw chuck. True or False?
True
What is the most common type of drill bit?
Twist Drill
What is the most common type of drill bit?
Twist drill
The current design practice is to specify tolerance with a base dimension and +0.000x/-0.0000 or +0.0000/-0.000x. This is called ___ tolerance. A. Monolateral B. Bilateral C. Unilateral D. Trilateral
Unilateral
What machine should be used for the boring of large, short parts?
Vertical boring machine
Material removal rate is defined as ___. A. volume of material cut/cutting time B. Cutting time/ volume of material removed C. Surface area/depth of cut/cutting time D. Volume of material removed X cutting speed
Volume of material cut/ cutting time
Match the description and terms with regard to surface measurement. Surface irregularity of a wide spacing, generally due to warping, vibrations, or deflection during the machining process. A. Peak to peak value B. Lay C. Waviness D. Surface roughness
Waviness
The _______ are hardened, precision ground steel rails that run longitudinally along the top of the lathe bed.
Ways
What is the center column or backbone of a twist drill called?
Web
Gage blocks are assembled by being _____ together to create various dimensional sizes. A. Bolted B. Glued C. Pressed D. Wrung
Wrung
drill bit materials
Yes: carbide inserts, HSS with TiN coating, HSS, solid carbide NOT: HSS with Al2O3 coating
To hold odd-shaped parts, a face plate or ____ would be used.
a 4 jaw chuck
With continuous chips, ___ in the work, heat generation, and temperature is experienced A. an increase B. A decrease
a decrease
The desired difference between the dimensions of two mating parts is called ____.
allowance
The tailstock moves ___ and the ___ is housed in the upper casting of the tailstock and moves ___ to the bed with a handwheel. A. along the ways B. with the carriage C. spindle D. quill E. longitudinally F. transversely
along the ways quill longitudinally
The tailstock moves and the is housed in the upper casting of the tailstock and moves to the bed with a handwheel.
along the ways quill longitudinally
The tailstock moves [x] and the [y] is housed in the upper casting of the tailstock and moves [z] to the bed with a handwheel.
along the ways, quill, longitudinally
With continuous chips, ____ in the work, heat generation, and temperature is experienced.
an increase
The tooling for the lathe is mounted on the tool post, which mounts on the , which is mounted to the , which is part of the carriage assembly.
apron cross slide
What is the 3rd step in the four steps needed to obtain an accurate hole in a workpiece?
boring
What is the 3rd step in the four steps needed to obtain an accurate hole in a workpiece? A. drilling B. boring C. reaming D. centering and countersinking
boring
what is the third step in 4 to obtains an accurate hole in a work piece
boring
What types of machines should be used for the turning of small, long slender parts? A. brown and sharpe screw machine B. CNC lathe C. tool makers lathe D. swiss screw machine E. engine lathe
brown and sharpe machine swiss screw machine
Which of the following is NOT used to hold parts in the lathe? A. c-clamp B. face plate C. chuck D. centers E. collet
c-clamp
Which of the following is not a machining process?
casting
The tooling for the lathe is mounted on the tool post, which mounts on the ___ which is mounted to the ___, which is part of the carriage assembly. A. apron B. compound rest C. follow rest D. cross-slide
compound rest cross slide
The tooling for the lathe is mounted on the tool post, which mounts on the ____, which is mounted to the _____, which is part of the carriage assembly.
compound rest, cross slide
Cutting fluids primarily function is to be a(n) ____.
coolant
Cutting fluids are used primarily as ____
coolants
Using a taper attachment to produce a taper causes the ___ to move transversely as a guide shoe moves on the ___. A. compound B. cross slide C. taper bar D. ways
cross slide ways
Using a taper attachment to produce a taper causes the cross-slide to move transversely as a guide shoe moves on the ways .
cross slide ways
Using a taper attachment to produce a taper causes the [x] to move transversely as a guide shoe moves on the [y].
cross slide, ways
Using a taper attachment to produce a taper causes the ________ to more transversely as a guide shoe moves on the ________.
cross-slide ways
The surface roughness from a part produced in a lathe can be decreased by ___________.
decreasing the tool feed and increasing the tool corner radius
The surface roughness from a part produced in a lathe can be decreased by ___. A. decreasing the tool feed rate and increasing the tool corner radius B. decreasing the tool feed rate and decreasing the tool corner radius C. increasing the tool feed rate and decreasing the tool corner radius D. increasing the tool feed rate and increasing the tool corner radius
decreasing the tool feed rate and increasing the tool corner radius
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.
In boring operations, compared to turning operations, the
depth of cut and the feed rates are lower
Which of the following is not a basic chip type?
discontinuous with built-up edge
The size of a lathe is specified by two parameters, which are ____ and ____.
distance between centers, swings
A hole saw would not be used in which of the following applications? A. drilling a 2" dimeter hole through 1" thick plastic B. drilling holes in thin materials C. drill a blind, 2" diameter hole in steel D. drilling a 1/18" diameter hole in sheet metal
drill a blind, 2" diameter hole in steel
By mounting a ___ in the lathe tailstock, holes can be produced in the part.
drill bit
By mounting a ___ in the lathe tailstock, holes can be produced in the part. A. actylene torch B. tap C. drill bit D. laser
drill bit
By mounting a ________ in the lathe tail stock, holes can be produced in the part
drill bit
A gun drill is used for what applications?
drilling deep holes
A gun drill is used for what applications? A. drilling holes with a diameter larger than 2" B. Drilling gun barrels from solid stock C. Drilling deep holes with a hold diameter less than .025" D. drilling deep holes
drilling deep holes
A hole saw is used for thin materials and can be used to:
drilling holes in thin materials (1/16 and less) drilling a 2" diameter hole through 1" thick plastic drilling a 1-1/8 " diameter hole in sheet metal NOT drilling a blind, 2" diameter hole in steel
Which of the following is not an item produced by a screw machine as listed on the website? A. swirler- fire extinguishment industry B. pin for defense industry C. tripwire pin- defense industry D. bone screw- medical industry E. Probe tip with through hole F. contact pin for electronic industry G. Bobbin for electronics industry H. engine piston pin
engine piston pin
Turning is a machining operation that rotates the work piece about an axis and material is removed from the ___ of the part. A. both internal and external surfaces B. internal surface C. external surface
external surface
Turning is a machining operation that rotates the work piece about an axis and material is removed from the _____________ of the part.
external surface
Turning is a machining operation that rotates the work piece about an axis and material is removed from the ______________________ of the part.
external surface
What is the process called that produces a flat surface perpendicular to the axis of rotation of the work piece?
facing
Collets have a wide range of sizes that they can hold.
false
With a horizontal boring machine, the part and the tooling are rotated around a horizontal axis simultaneously.
false
collets have a wide range of sizes that they can hold.
false
Force acting in the direction of the tool feed
feed force
Cermets are a new class of tool materials best suited for what type of operations?
finish machining
Cermets are a new class of tool materials best suited for what type of operations? A. machining of high alloy steels B. general purpose machining C. roughing D. finish machining
finish machining
The purpose of a counterboring operation is to produce a ___. A. flat bearing surface for a bold head B. flat bottom recess for a bolt head or nut. C. beveled recess for bolt head D. smooth surface finish on the walls of the drill hole
flat bottom recess for a bolt head or nut
The purpose of a counterboring operation is to produce a ____.
flat bottom recess for a bolt head or nut.
The purpose of counter boring is to produce a _____--.
flat bottom recess for a bolt head or nut.
The body of the drill contains two or more helical grooves call ___ for chip removal. A. grooves B. spirals C. helix D. flutes
flutes
The body of the drill contains two or more helical groves called _______ for chip removal.
flutes
When machining long, slender parts to reduce the deflection of the work piece a ___ or a ____ can be used to support the part.
follow rest steady rest
Identify for each of the following whether the device is used for measurement or gaging. Be careful- the name does not always tell you. Screw thread pitch gage A. Measurement B. Gaging
gaging
What is the process called that uses fixed size instruments to determine if a part has been machined within tolerance?
gaging
Power for the lead screw and the feed rod are provided by the _________.
gear box
Which of the following processes cannot be performed on a lathe? A. external and internal threading B. tapered turning and boring C. gear hobbing D. reaming E. Drilling F. Broaching G. Facing H. Tapping
gear hobbing broching
Power for the lead screw and the feed rod are provided by the ___.
gearbox
Power for the lead screw and the feed rod are provided by the ___. A. belt drive off the spindle B. servo motor C. gearbox
gearbox
To drill very deep holes in a part, which type of drill should be used
gun drill
High speed steel is used in which of the following applications
hand tools, low speed and low volumes, and complex tooling shapes
Polycrystalline Cubic Boron Nitrides are used for machining what types of materials?
hardened steels and superalloys
Polycrystalline Cubic Boron Nitrides are used for machining what types of materials? A. Plastics, composites, and wood products B. hardened steels and superalloys C. low carbon steel D. aluminum alloys
hardened steels and superalloys
Which of the following materials typically is used for gage blocks?
hardened, ground steel
The typical twist drill is comprised of a shank, cutting edges, chisel edge, and
helical flutes along a long, slightly flexible rod
The angle that the flutes make with the center line of the drill is called: A. flute angle B. helix angle C. rake angle D. point angle
helix angle
The angles that the flutes make with the center line of the drill is called?
helix angle
Continuous chips are formed with _____ ductile materials.
high
The spindle is a ___ which supplies the rotational motion to the ____. A. hollow shaft B. solid shaft C. tooling D. work piece
hollow shaft work piece
The spindle is a which supplies the rotational motion to the .
hollow shaft work piece
The spindle is a [x] which supplies the rotational motion to the [y].
hollow shaft, workpiece
For the boring of large parts which cannot be turned in a lathe, what type of machine should be used?
horizontal boring machine
What type of machine would be used to do boring on large parts that cannot be turned in an engine lathe? A. universal boring machine B. vertical boring machine C. horizontal boring machine D. gantry lathe
horizontal boring machine
Which of the following functions are performed by the headstock
housing and speed selection for the spindle
The lathe head stock provides ____ and ____
housing for the spindle speed selection for the spindle
The lathe head stock provides ____ and ____
housing for the spindle, speed selection for the spindle
Select the statement that is false for the chisel edge of a twist drill. A. it has high generation B. if tends to be self centering C. it has a low cutting speed due to being close to the hole center D. it forms a small hole at the center as part of the drilling operation
if tents to be self centering
Continuous chips remain in contact with the tool face longer, causing ___.
increased frictional heating, temperature and tool wear
Continuous chips remain in contact with the tool face longer, causing ___. A. decreased frictional heating, temperature and tool wear B. Increasing coolant use C. Increased frictional heating, temperature and tool wear D. Increased tool forces
increased frictional heating, temperature and tool wear
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 bed of the lathe
is the base of the lathe on which other components of the lathe mount
Which of the following statements is false for producing holes by trepanning? A. It removes a ring of material to produce the hole B. it works well for producing deep holes C. it is used only in mass production operations D. it uses less power to operate the drill
it is used only in mass production operations
Which of the following statements does not apply to the reaming process?
it will make the hole concentric with an axis of rotation
What is the process called that produces a raised diamond pattern on the surface of the part by a cold forming process?
knurling
What is the process called that produces a raised diamond pattern on the surface of the part by a cold forming process? A. knurling B. razing C. crossing D. fluting
knurling
The direction of the predominant surface pattern produced by the machining process.
lay
The accurate longitudinal feed of the tooling for threading operations is provided by ?
lead screw
The accurate longitudinal feed of the tooling for threading operations is provided by ___. A. Cross slide B. feed rod C. lead screw
lead screw
Cutting fluids secondarily function is to be a(n) _____.
lubricant
Cutting fluids are used secondarily as _____.
lubricants
New tooling machines are placing new requirements upon machining and machining processes, including
machining procedures with gentle tool entry and exit from the cut
The function of the ___ is to guide the bit inside the drilled hole
margin
During the drilling operation, the drill is guided in the hole by the ___ rubbing against the hold. A. margins B. flutes C. lands D. lips
margins
During the drilling operation, the drill is guided in the hole by the _____ rubbing against the walls of the hole
margins
During the drilling operations, the drill is guided in the hole by the _____ rubbing against the walls of the hole.
margins
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
Identify for each of the following whether the device is used for measurement or gaging. Be careful- the name does not always tell you. Height Gage A. Measurement B. Gaging
measurement
Identify for each of the following whether the device is used for measurement or gaging. Be careful- the name does not always tell you. Micrometer A. Measurement B. Gaging
measurement
Identify for each of the following whether the device is used for measurement or gaging. Be careful- the name does not always tell you. Surface roughness instrument A. Measurement B. Gaging
measurement
Cermets are a ___ material in a ___ binder. A. carbon fiber B. metal C. epoxy D. ceramic
metal Ceramic
Cermets are a _____ material in a _____ binder
metal, ceramic
Turret lathes hold tooling in tool turrets so that
more tools can be set up machining, thereby decreasing setup time and increasing machine productivity
A drilling machine used in mass production operations to drill several holes simultaneously is a
multiple spindle drilling machine
What is the name of a drilling machine with multiple spindles that produces multiple holes simultaneously in a work piece? A. gang drill press B. vertical drill press C. multispindle drill head D. radial arm drill press
multispindle drill head
Most parts manufactured are a collection of geometric shapes; therefore, dimensions have a ___ distribution. A. Normal B. Weibull C. Chi-square D. Exponential
normal
Most parts manufactured are a collection of geometric shapes; therefore, their dimensions have a(n) ____ distribution.
normal
Most machining occurs at ____ angles
oblique
What is the process in which a thin tool is fed perpendicular to the axis of the work piece to remove the completed part from the stock?
parting off
What is the process called where the drill is fed into the work, removed slightly, fed again and repeated until the hole is finished? A. peck drilling B. cyclic drilling C. rapid drilling D. fast drilling
peck drilling
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 materials is NOT used for gage blocks?
polished stainless steel
Taylor's equation is used to
predict the life of a cutting tool based upon cutting speed
Force acting in the direction of the cutting velocity vector.
primary cutting force
Machining operations are performed on a part for the following reasons:
produce threads, produce flat sealing surfaces, produce a mold for injection molding, to produce one of an item
Force acting perpendicular to the machined surface.
radial
Traditional machining is the process of ____
removing unwanted material from a part in the form of chips
Traditional machining is the process of ____.
removing unwanted material from a part in the form of chips
PCBN and diamonds are extremely hard but brittle materials, placing new demands on machine tools and machining processes. These demands include the following. The use of more ____ machine tools. Machining practices involving ____ entry and exit of the cut to prevent microchipping of the tool material. The use of machine tools, because these tool materials are capable of producing higher quality finishes and machining to greater accuracy. The use of machine tools with high power, because these tool materials are capable of higher MRR and higher _____.
rigid gentle high-precision spindle speeds
Specific horsepower correlates well with
shear strength
Chip formation involves a localized ___________ process with ____________ strains and high strain rate plastic deformations in a radial _____________ region that progresses ahead of the tool.
shearing large compression
Chip formation involves a localized [x] process with [y] strains and high strain rate plastic deformations in a radial [z] region that progresses ahead of the tool.
shearing, high, compression
The ____ has the lathe bed rotated 45 to 60 degrees, typically has a tool turret, and is a type of construction often used for a CNC lathe
slant bed lathe
Tool failure can be classified into two categories: _____ death and _____ death
slow sudden
Collets are used to hold ___ in a lathe. A. only round parts B. odd shaped, difficult to hold parts C. cast parts D. smooth parts
smooth parts
Collets are used to hold _________ in a lathe.
smooth parts
Collets are used to hold____ in a lathe.
smooth parts
Select the three variables that are normally controlled in the machining process.
speed depth of cut feed rate
Precision of a machine tool can be defined as
spread of the normal curve at the tangent point with the largest value
The mathematical quanity associated with precision for a device is _____.
standard deviation
When machining long, slender parts to reduce the deflection of the work piece a ___ and a ____ can be used to support the part.
steady rest, follow rest
The twist drill was invented in 1863 by whom? A. stephen morse B. eli whitney C. simon north D. james watt
stephen morse
Tool failure can be classified into two categories: _____ death and _____ death
sudden, slow
Finely-spaced surface irregularity from the machining operations
surface roughness
Finely-spaced surface irregularity from the machining operations.
surface roughness
Which of the following processes are gage blocks not used for?
surface roughness measurement
The size of a lathe is specified by two parameters, which are ____ and ____.
swing distance between centers
What are the processes that can be performed on a lathe ?
tapered turning and boring external and internal threading tapping reaming facing drilling NOT gear hobbing , broaching
In surface roughness measurement, the term surface roughness means
the finely-spaced surface irregularities produced by the machining process
Which of the following statements is false for the reaming process? A. It removes a small amount of material from the hole B. Reaming is a process that can be performed by hand or machinery C. reaming finishes the hole to an exact diameter D. the process will make the hole concentric with an axis of rotation
the process will make the hole concentric with an axis of rotation
The undesired but permissible deviation from a desired dimension is called _______.
tolerance
Which of the following is NOT a base for machinability?
tool temperature
A vertical boring machine is typically used with large parts, and the part is rotated around a vertical axis.
true
The centerline of the tailstock quill is adjustable relative to the lathe centerline.
true
The drill process has a high MRR
true
Typically collets provide more accurate centering than 3- jaw chuck.
true
Statements of the chisel edge of a twist drill:
true: It forms a small hole at the center as part of the drilling operation due to the negative rake angle, it has a high trust force high heat generation has a low cutting speed due to being close to the hole center False: it tends to be self centering
Trepanning
true: it uses less power to operate drill removes a ring of material to produce the hole works well for producing deep holes false: is only used in mass-production operations
reaming process
true: removes a small amount of material from the hole, reaming is a process that can be performed by hand or machinery (mass-production), reaming finishes the hole to an exact diameter NOT: the process will make the hole concentric with an axis of rotation
What is the most common type of drill bit? A. twist drill B. Spade drill C. center drill D. insert drill
twist drill
The current design practice is to specify tolerance with a base dimension and +0.000x/-0.0000 or +0.0000/-0.000x. This is called ____ tolerance.
unilateral
The turning of a taper can be accomplished by
using a taper attachment, offsetting the centers, programming in a CNC lathe, using the compound rest
What machine should be used for the boring large, short parts?
vertical boring machine
What machine should be used for the boring of large, short parts? A. vertical tool lathe B. vertical boring machine C. engine lathe D. horizontal boring machine
vertical boring machine
Material removal rate is defined as ___
volume of material cut/cutting time
Material removal rate is defined as ____.
volume of material cut/cutting time
Material removal rate is defined as
volume of material removed / cutting time
Surface irregularity of a wide spacing, generally due to warping, vibrations, or deflection duringthe machining process.
waviness
The ___ are hardened, precision ground steel rails that run longitudinally along the top of the lathe bed. A. guided B. rails C. ways D. tracks
ways
The _______ are hardened, precision ground steel rails that run longitudinally along the top of the lathe bed.
ways
The ____________ are hardened, precision ground steel rails that run longitudinally along the top of the lathe bed.
ways
What is the center column or backbone of a twist drill called? A. column B. web C. shank D. rod
web
Gage blocks are assembled by being ______ together to create various dimensional sizes.
wrung
