MFG 102 Final Exam

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Feed per revolution

FPR stands for ____

dry run

Generically speaking, a ____ refers to running a machine with disabled functions to eliminate the potential for collisions

TNRC

Once ____ is properly turned on, the MCU makes all the necessary compensation and the part coordinates may be programmed as though the cutting tool did not have a radius at all

spring

___ collets are very accurately ground cylindrical sleeves

polar

___ coordinates require that positions be identified by defining both an angle and a distance (like a vector in math)

collets

___ have holes in their centers to match the size and shape of the workpiece to be held

friability

___ is the ability of the individual abrasive grains to fracture during grinding to create new, sharp edges

conversational

___ programming was developed to simplify the machine programming process

HMC

____ 's popularity is due partly to the versatility of workholding, the inherent rigidity of the machine's column, and the ability to allow gravity to help remove chips out of the machining area

squaring

____ a workpiece means machining the sides of a workpiece perpendicular and parallel to each other

bonding agents

____ act as the glue that holds individual abrasives together in the shape of a wheel

vises

____ are the most commonly used workholding devices for milling

cnc collet chucks

____ consist of a straight round shank with a tapered bore

single-pass drilling

____ cycles feed the tool continuously to the programmed Z-depth

chamfer

____ endmills are used to produce a bevel on the workpiece edge

cylindrical

____ grinders are used to grind diameters, shoulders, and faces much like the lathe is used for turning, facing, and boring operations

horizontal spindle surface

____ grinders typically use the periphery of a solid wheel to grind workpiece surfaces

vertical spindle surface

____ grinders use the side of a grinding wheel to grind workpiece surface

facing

____ is cutting across the end of a workpiece to machine the end flat

knurling

____ is producing a raised pattern on the circumference of a workpiece

tramming

____ is the process of adjusting the head so that the spindle is perpendicular to the top surface of the machine table

boring

____ is using a single-point cutting tool to enlarge an existing hole

conventional

____ milling is feeding the workpiece in against the rotation of the cutting tool

face

____ milling is using the face of the cutting tool to machine a surface

single-block

____ mode allows the ability to execute only one block of the program at a time

MDI

____ mode provides a blank program screen for entering short programs or single program commands

wear

____ offsets are used when a size adjustment needs to be made after a given tool has been satisfactorily producing parts for a while

wear

____ offsets may be used to compensate and adjust for wear as the tool is used during production

depth of cut

____ refers to the distance that the cutting tool is engaged in the workpiece

grain

____ sizes from 46 to 60 are commonly used for general-purpose surface grinding operations

pallet

____ systems use two or more work holding tool plates that can be quickly and accurately interchanged on the machine's table

buttress

____ threads are easily identified since the thread form is asymmetrical

right-hand

____ threads have a helix that causes assembled fasteners to get tight when rotated clockwise

live

____ tools are small motorized spindles that enable a turning machine to perform light-duty milling and to perform hole-work such as drilling-tapping, and reaming off-center and cross-way

rocker-type

____ tools posts and holders have been largely replaced since they do not offer as much rigidity as newer toolholding methods

rapid

____ traverse is designated by the code G0

type 1 straight

____ wheels are probably the most widely used wheel for surface and cylindrical grinding operations

CBN

____ wheels are second in hardness after diamond wheels

rapid override

_____ controls slow rapid motion while a program is running or vary the jogging rate

grooves

_____ may be needed to accept O-rings or retaining rings, act as a relief for threading, or to provide clearance on shoulders for mating parts

machine

_____ vises are the most commonly used workholding devices for milling because they are highly versatile, accurate, and simple to use

large

_____ workpieces that require direct clamping usually need to be aligned

G

_____-codes prepare a machine to engage in the particular mode for machining

turning

____is reducing the outside diameter of a workpiece

VDI

____tool-mounting adapters have a round shank with a serrated tooth pattern

gang tool

____type machines typically are of a flat bed design and are fitted with a carriage where tools are installed

magnetic

____workholding devices contain alternating segments of ferrous and nonferrous materials that are mounted together to form a single unit

side

___grinding should be performed when it is not possible to grind two perpendicular surfaces by repositioning the workpiece

deep-hole

a G83 is for the ____ drilling cycle and fully retracts the tool from the hole between pecks

micro

a ___ drill press operates at very high spindle speeds and is used to produce very small holes

tapping

a ___ head is specially designed tool that allows the spindle to be run to drive taps

protractor

a ____ aids in the position the head at the desired angle

edge finder

a ____ can be used to very accurately find a reference end

steady rest

a ____ clamps directly to the lathe's ways and acts as a brace to surround and support the workpiece

shell

a ____ endmill is a multiple-flute hollow cutter that is mounted onto an arbor

tool and cutter

a ____ grinder is used for tool sharpening while the cutting tools are held in workholding devices and machine slides provide movement for much greater control and flexibility

mandrel

a ____ is a special precision cylindrical shaft that can be inserted through the center bore of the workpiece to secure it for machining

fixture

a ____ is a workholding device speciifially designed to accommodate a specific workpiece

sub-spindle

a ____ is an auxiliary secondary spindle, which opposes the machine's main headstock spindle

wiggler

a ____ is sometimes used to position the workpiece under the center of the drill press spindle

servo

a ____ motor is a hybrid electric motor with half motor/half position sensor

indexable

a ____ tool posts consists of a t-nut, clamping stud, and a multi-sided tool block with either removable to integral toolholders

collet

a ____ type fixture can be used to spin a workpiece beneath the grinding wheels to grind diameters

bar puller

a _____ is a tool that is mounted to the turret and, when programmed, can approach the remaining bar material after a part has been cut off

face

a _____ mill is a multiple-cutting-edge milling cutter that has replaceable inserted cutting edges

gang

a ___drill press contains multiple drilling heads attached to a single base and worktable

pilot

a counterbore has a guide on its end called a ____ that keeps the counterbore aligned in the existing hole

sensitive

a drill press without a power-feed mechanism is sometimes called a ____ drill press because the operator can "feel" the cutting action of the tool and adjust the rate of feed for optimal cutting pressure by increasing or decreasing pressure on the feed handle

45

a magnetic v-block can be used to hold a workpiece at a ___-degree angle and extends the magnetism of a check to the workpiece

machinability

a relative measure of how easily a material can be machined is called its ____

spotting

after the workpiece is position and securely clamped, a center drill is usually used to create a more positive starting point for a twist drill. This operation is sometimes called ____

A

aluminum oxide and ceramic aluminum oxide wheels are identified by the letter ____

diamond

aluminum oxide and silicon carbide wheels are dressed and trued simultaneously using a ____ dresser

end of block

at the very end of each block is a semicolon (;) character is called a _____ character

silicon carbide

green wheels are the purest form of ____ wheels

thru holes

holes that are drilled entirely through a workpiece are called ____

thread micrometer

if ring gages or a _____ is not available, the three-wire method may be used to measure pitch diameter

clearance plane

in CNC mill programming, it is standard practice to establish a safety zone above the workpiece of workholding device called a ____

graphic simulation

is a quick way to troubleshoot obvious programming issues, but doesn't analyze an actual machine setup or small positioning errors

heel

lip clearance is the relief angle from the lips back to the ____

parallels

magnetic _____ are not magnetic by themselves but are designed to extend the magnetic field of the chuck to the workpiece

stub arbor

milling cutters are secured onto a _____ for mounting in the machine spindle

arbors

milling cutting tools may be mounted either with ___ or directly to their shanks

HSS

milling cuttings may be made from one solid piece of ____ or carbide

sleeve

morse taper ____ adapters increase the size of a tool's shank taper

tombstone

most commonly used in horizontal spindle machines, a ____ is a tower with multiple vertical working surfaces where workholding devices are mounted

linear guides

most modern cnc machines employ a high-tech modernized version of ways called ___

cutter radius

offsetting the path of the cutting tool is called ___ compensation

automatic

once the production performance is proved satisfactory, the machine is now ready to be run in ____ mode

geometry

once the tool measurement has been determined, the tool offset measurements are stored in the machine's ____ offset page

cutoff

performing a ____ operation on the lathe uses a special narrow tool to take off the end workpiece to a desired length

sine

precision angles can be ground using a magnetic ____ chuck

centerless

production grinding of the outside shafts and tubes can be performed with the ____ grinder

word

programming code that the machine can understand is called ____address

CAM

programming is done largely with the aid of specialized computer software on a regular personal computer called ___ software

solid models

some drawings, called ____, look like solid illustrations of the actual part and are much more realistic looking

rigid

some machines have a more accurate method of mating the spindle RPM and feed rate throughout the entire tapping cycle, which is called ____ tapping

dressing

superabrasive wheels should first be trued to eliminate runout using a brake truing device and then dressed using a ___ stick

tailstock

the ___ can be used to secure workholding accessories to help support workpiece in many operations

ballnose

the ___ endmill is an endmill with a half-round sphere ground on its end

longitudinal-feed

the ___ hand wheel rotated to move the table left and right

shank

the ___ of a drill bit provides an area for mounting the drill bit into a holder

grade

the ___ of a grinding wheel refers to its hardness or strength of the bond and ranges from A - Z

Morse

the ___ taper is a popular standardized style of taper used in drill press spindles and for holemaking tools

swing-arm-type

the ___ tool changer uses a double-ended arm to change tools

ram

the ____ allows the entire head to be moved forward and backward and then locked in position

helix

the ____ angle is the angle of a thread's spiral relative to the center axis of the part

pin vise

the ____ chuck is a micro drill chuck that has a much slimmer design, has a smaller capacity, and will enable very small drills to run truer than a larger chuck

quill

the ____ feed handle can be used when performed holemaking operations or to position cutting tools for milling operations

CAT

the ____ flange was originally developed specifically for CNC use by caterpillar inc

jig

the ____ grinder provided more precise X- and Y- axis movements than a vertical milling maching for extremely accurate positioning

margin

the ____ is a thin raised strip that runs the length of the drill body along the edge of the flutes and gives the drill bit its diameter

leadscrew

the ____ is a very long threaded rod supported by bearings at both ends

saddle

the ____ is an H-shaped casting that slides back and forth on the ways

angle plate

the ____ is most often used when a hole is to be drilled perpendicular to a large flat surface on the workpiece

dividing head

the ____ is mostly used for rotating the workpiece to a position and then securing it there for machining

helix angle

the ____ is the angle of a drill's spiral relative to the center axis of the drill

spindle

the ____ is the part of the drill press that holds and rotates the cutting tool

flank

the ____ is the thread surface that joins the crest to the root

MCS

the ____ is used for the machine's own reference purposes and helps it to keep track of how far each axis can move before it runs out of travel

retention

the ____ knob is gripped by a power-actuated drawbar mechanism in the machine spindle to secure the mating tapers

lips

the ____ of a drill are the angled cutting edges that shead the metal into chips as the drill rotates

swing

the ____ of the lathe is determined by the biggest diameter workpiece that can be mounted in the spindle without touching the ways

facing

the ____ operation is usually operation to be performed on a turned workpiece

homing

the ____ procedure is used to rezeroe and establish MCS location so that is may begin keeping track of position again

turret

the ____ rests on this surface and allows the entire machine head to be swiveled 360 degrees

first

the ____ step in aligning a turret is to indicate an angle plate parallel with the y-axis by moving the saddle

radial-arm

the _____ drill press is the largest of the drilling machines

spindle

the _____ is a precisely ground shaft

pecking

the alternating drilling and retracting motion of a quill to clear chips from the point is called____

WCS

the cartesian coordinate system that identifies the location of the origin on the workpiece is called the ___

work

the distance from the MCS to the WCS is called ____ offset

body

the drill ____ extends from the tip to the beginning of the shank and makes up the majority of the drill bit

geometry

the entirety of the what makes up a drawing is referred to as ___ in many software packages

chuck key

the jaws are closed and opened by inserting a special wrench called a ____ into a socket on the chuck

bed

the lathe ____ is located on the right side of the headstock and is the foundation of the entire machine

holemaking

the major benefit of performing ____ operations using the vertical mill is the ability to more precisely establish hole locations

surface

the primary purpose of a ____ grinder is to produce flat surface

CAD

the very first step in using specialized computer software is to make a drawing with ____ software

chisel edge

the___ does no actual cutting but is instead forced into the material when drilling

rotary table

the___consists of a heavy base on which a circular worktable is mounted

drill drift

to remove a taper-shank tool from the drill press spindle, a wedge-shaped____is inserted between the tapers through an opening in the spindle and lightly tapped with a hammer

program stop

two M- codes can be used to cause a _____, or hold, on the program until it is resumed by pressing the cycle start button on the MCU

turning center

when a cnc lathe is equipped with an automatic tool changer it is called a ____

zero

when an indicator reads ____ throughout a full sweep, the spindle has been aligned with the centerline of the round feature

radially

when programmed ____, all X coordinates are given as a radius of the part

pilot hole

when the desired hole is larger than 1/2" in diameter, a smaller hole called a ____ is often drilled before the larger drill bit is used

tool height

where the machine knows where the tool tip is so that the tool can be programmed from its tip regardless of its length, this is called the ____ offset

one

you should offset ____ of the mill table axes to cut a radius

ring

you should perform a ____ test to be sure that the wheel is not defective


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