lathe

Question 1

When a file is used

Answer 1

always left hand on handle and right hand in the end

Question 2

To size a lathe

Answer 2

Swing over the ways and distance between centers .

Question 3

weight of a lathe

Answer 3

the rigidity of the be bed

Question 4

bed

Answer 4

cast iron peace that supports the lathe and able to handle vibration and deflection

Question 5

Ways

Answer 5

machined top of the bed ad are hardened to resist ware one set for tail stock and one for the carriage .

Question 6

Head stock

Answer 6

On the left of the lathe and houses the headstock spindle .

Question 7

Headstock spindle

Answer 7

The headstock spindle is a hollow shaft supported by bearings . the works hold a live center ,chuck or faceplate

Question 8

Back gears

Answer 8

link the spindle to the input shaft of the quick change gearbox

Question 9

backlash

Answer 9

the amount of slack or space between mounting gears

Question 10

Quick change gearbox

Answer 10

allows you to change gears quick and easily by shifting levers

Question 11

pinion

Answer 11

engages the rack

Question 12

rack

Answer 12

found under the front ways and move the carriage .

Question 13

feed rod

Answer 13

move the carriage slower for turning

Question 14

lead screw

Answer 14

move the carriage for threading

Question 15

carriage

Answer 15

rides directly on the ways and is made up of the saddle , cross-slide , compound rest and apron .

Question 16

saddle

Answer 16

H shaped casting rides directly on the ways

Question 17

cross-slide

Answer 17

sits on top of the saddle and moves at right angles of the axis for the workpiece

Question 18

compound rest

Answer 18

sit on top of the cross-slide . small sliding mechanism that adjust short distances and can swivel 360 deg . no power feed and tool post mounts on top

Question 19

Apron

Answer 19

Hangs in front of the saddle .houses the drive gears and the split nut lever

Question 20

Split nut lever

Answer 20

closes the split nut on the lead screw when thread is cutting

Question 21

automatic feed lever

Answer 21

engage power feed to the carriage or cross slide

Question 22

feed change lever

Answer 22

select between carriage or cross slide for power when automatic feed lever is engaged

Question 23

tailstock

Answer 23

consist of two part casting that sits on the ways and is clamped in place with the tailstock clamp

Question 23

Tailstock spindle

Answer 23

can move in and out by turning the tailstock handwheel Spindle bore is Morse taper to accommodate dead center . drill chuck and other cutting and clamp in place with the spindle clamp

Question 24

Lathe dogs

Answer 24

use to transmit power from the spindle to the workpiece when held between centers. Great care should be taken when used protruding parts can catch loose clothing and severely injure the operator .

Question 25

Tool holding system must meet the following

Answer 25

1 tool must be held rigidly 2 the height of the cutting tool must be adjustable 3 tool setting must be repeatable .

Question 26

steady rest

Answer 26

To support a piece other on the end or the middle . Adjustment screws 120 deg apart. Three of them

Question 27

follower rest

Answer 27

keeps a work piece from deflecting away from the cutting tool Only two rests

Question 28

Taper Attachment

Answer 28

allows the lathe to cut a taper by causing the carriage and cross slide to move at the same time

Question 29

Tool post grinder

Answer 29

is a wheel and motor that attach to the compound rest . The abrasive grit damage the ways if not protected with a board .

Question 30

Knurling tool

Answer 30

does not cut metal but displaces it Flush area with coolant to wash away any fine shavings. Low spindle speed high feed rate

Question 31

Tapers head stock spindle

Answer 31

Morse taper holder

Question 32

tail stock spindle taper

Answer 32

Morse taper 5/8th

Question 33

Milling machine taper

Answer 33

3 1/2 inch per foot

Question 34

Jacobs taper

Answer 34

ranges from 0.591 to 0.979 taper per inch

Question 35

forming tools

Answer 35

use to do special shapes .O ring grooves and threading and chamfering.

Question 36

Cemented carbide

Answer 36

pieces of carbide soldered onto a steel shank

Question 37

sharpening HSS tool

Answer 37

Use aluminum oxide Gray wheel Remember to quench often not to over heat the steel

Question 38

Sharpening cemented carbide

Answer 38

Use aluminum oxide to grind away supporting steel and use silicon carbide to sharpen carbide

Question 39

carriage oil pump

Answer 39

Lubricates the carriage ways

Question 40

why not use compressed air

Answer 40

can potentially force chips into areas that can not be cleaned

Question 41

Spindle speed

Answer 41

Spindle speed is set to the correct cutting speed

Question 42

Cutting speed

Answer 42

the speed the the workpiece moves past the cutting tool measured in rpm

Question 43

Feed rate

Answer 43

the rate at which the tool is fed into the workpiece measured in inch or millimeter per revolution

Question 44

Direct reading dial

Answer 44

the cut is the same as the dial indicated

Question 45

indirect reading dial

Answer 45

the cut is twice the increment shown

Question 46

parting

Answer 46

must be done as close to the chuck as possible Set the tool with as little as possible over hang

Question 47

boring

Answer 47

a hole must be drilled fist to accommodate the boring bar

Question 48

reaming

Answer 48

spindle half the speed of drilling but twice the feed of drilling

Question 49

Thread chasing dial

Answer 49

tells you when to close thre split nut

Question 50

Split nut

Answer 50

closes the lead screw to cut threads according to the tread chart.

Question 51

cutting fluids

Answer 51

oils and emulsions (oil and water ) is the most common.

Question 52

three types of cutting fluids

Answer 52

1) cutting oils 2)emulsifiable oils 3) chemical cutting fluids

Question 53

Characteristics of cutting oils

Answer 53

must cool, lubricate , resist rust and corrosion , remain stable . resist rancidity . non toxic transparent, low viscosity and non flammable .