Turning

Question 1

What is turning

Answer 1

single pooint cutting tolol removing material from rotating work peice to form a cyllinder

Question 2

where is turning preformed

Answer 2

Lathe

Question 3

what are the 11 different parts of the lathe and where are they located

Answer 3

Head stock
tail stock
Spped controls ( headstock)
feed controls (headstock)
Bed ( tail stock)
Spidle (headstock)
carriage
tool post ( carriage)
ways
threaded lead screw
cross slide (carriage)

Question 4

what is the headstock for

Answer 4

hold one end of work peice
is hollow
controls spindle lead screw and feed screw sppeds

Question 5

what is the purpose of the carriage

Answer 5

holds/ controls actiity of te the cutting tool

Question 6

what is the purope of the rack

Answer 6

hanfdd feeding

Question 7

what is thhe purpose of the lead screw

Answer 7

for threading

Question 8

what is the purpose of the feed rod

Answer 8

power feed

Question 9

what are the cliucth conttrols for

Answer 9

forward reverse and stop

Question 10

what is the purpose of the tail stock

Answer 10

supports tyhhe other end of workpeice ( if requires)
can be used for drilling and reaming
slides along bed

Question 11

what is 3 components of lathe sizing and there defintions

Answer 11

swing- max diametre of workp[eice
max distance between centres: distance between the centre of the hed stock to tail stock
spindle bore- max bar diameter that will fit through the headstock

Question 12

what are the differnet tool pots

Answer 12

quick change tool post
4 way turret
latern tool post

Question 13

wat is the quick change tool post

Answer 13

40 positions at 9 eg increments
easily ajustable tool height

Question 14

what us a 4 way turret

Answer 14

can hold multple tools
very hard to set tool hights

Question 15

what are the 6 metthods of holding work

Answer 15

chucks
collet
face plate
live/dead centre
drive dog
mandrel

Question 16

what are the 3 different types of chucks and what makes the,m special

Answer 16

3 jaw- self centrering jaws
4 jaw- bindependant jaws
6 jaw- self centreing jaws

Question 17

what are. the advantages of a collet

Answer 17

better tool clearence
better workpeice contact
less mass = less energy
avaliable for square/hex bar but custom shapes are possible

Question 18

what are the disadvantages of a collet

Answer 18

only suitable for small diameters
small range
need a different collet for each size of bar stock

Question 19

what is a face plate

Answer 19

a plate attachted to the spindle with 4 clamps attached to the workpeice
only used for non cylindrical work peices

Question 20

what is a liv/ dead centres and what is the difference

Answer 20

live centera have an interanal bearing system allowing them to rotate with peice where dead centres dont rotate
attahced to tailstock of machine

Question 21

what are centre drills/ what is important when using 1

Answer 21

they create 60 deg holes to support liv/dead centres
important- make sure the tool is 60 deg cnetre drill since countersinks do not have the tip relief, inspect the hole

Question 22

what is a morse taper

Answer 22

a self holing taper in the tail stock

Question 23

what is the point of the morse taper

Answer 23

allows quick tool change and repeatadly

Question 24

what is a drive dog

Answer 24

a clamp that is attached on to the part and to a plate (dog plate)

Question 25

what is another word fro drive dog

Answer 25

between centres

Question 26

what is a mandrel

Answer 26

a fixture mounted in the achuck that can hold pre machined part

Question 27

what are the ccutting condidtions needed for turning

Answer 27

cutting speed feed depth of cut

Question 28

what is cutting speed

Answer 28

spped of the tool relitive to the surface of the part

Question 29

what is turning on a lathe

Answer 29

workpeice is spinning tool is atationary

Question 30

what are the 11 different types of turning operations

Answer 30

facing taper turning countour turning form turing chamfering grooving/part off face grovving threading drilling boring knurling

Question 31

what is facing

Answer 31

tool is fed inward (purpindicular to workpeice axis)

Question 32

what is taper turning

Answer 32

cutting on an angle

Question 33

what is countor turning

Answer 33

feeding the tool followiing the countor of the shape

Question 34

what is form turning

Answer 34

a tool that has a certian shape that only makes that shape

Question 35

what is chamfering

Answer 35

cutting the edge of a cylinder forming a chamfer

Question 36

what is grooving/part off

Answer 36

tool is fed into the rotationg part partially- craetes grooves entirely cuttingoff part

Question 37

what is importamt when face grooving

Answer 37

looking at tool clearence

Question 38

what is threading

Answer 38

pointed toll fed linear across the surface tool moves parrellel to part

Question 39

what is drilling

Answer 39

work ritating drill not

Question 40

what is boring

Answer 40

inceasing diameter of exsisting hole

Question 41

what is the difference between boring and turning

Answer 41

boring is on the inside of a hole turning is done on the outside of the cylinder

Question 42

what are the difficulties when boring

Answer 42

less rigid setup hard to evacuate chips chips want to wrap around boirng tool hard to see whats happening hard to make hole have flat bottom

Question 43

what is step boring

Answer 43

a tool to be used when a large cut is neededd as the tool has mulyipe heighhts set

Question 44

what is knurlinh

Answer 44

where a pattern is rolled onto the material to create texture

Question 45

what are the 2 types of knurling

Answer 45

form knurling- uuses hard rolls to deform the material cut knurling- uses sharp edge tool pressed on an angle to cut the pattern