Turning Flashcards

1
Q

What is turning

A

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

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2
Q

where is turning preformed

A

Lathe

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3
Q

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

A

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)

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4
Q

what is the headstock for

A

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

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5
Q

what is the purpose of the carriage

A

holds/ controls actiity of te the cutting tool

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6
Q

what is the purope of the rack

A

hanfdd feeding

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7
Q

what is thhe purpose of the lead screw

A

for threading

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8
Q

what is the purpose of the feed rod

A

power feed

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9
Q

what are the cliucth conttrols for

A

forward reverse and stop

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10
Q

what is the purpose of the tail stock

A

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

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11
Q

what is 3 components of lathe sizing and there defintions

A

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

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12
Q

what are the differnet tool pots

A

quick change tool post
4 way turret
latern tool post

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13
Q

wat is the quick change tool post

A

40 positions at 9 eg increments
easily ajustable tool height

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14
Q

what us a 4 way turret

A

can hold multple tools
very hard to set tool hights

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15
Q

what are the 6 metthods of holding work

A

chucks
collet
face plate
live/dead centre
drive dog
mandrel

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16
Q

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

A

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

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17
Q

what are. the advantages of a collet

A

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

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18
Q

what are the disadvantages of a collet

A

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

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19
Q

what is a face plate

A

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

20
Q

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

A

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

21
Q

what are centre drills/ what is important when using 1

A

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

22
Q

what is a morse taper

A

a self holing taper in the tail stock

23
Q

what is the point of the morse taper

A

allows quick tool change and repeatadly

24
Q

what is a drive dog

A

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

25
Q

what is another word fro drive dog

A

between centres

26
Q

what is a mandrel

A

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

27
Q

what are the ccutting condidtions needed for turning

A

cutting speed
feed
depth of cut

28
Q

what is cutting speed

A

spped of the tool relitive to the surface of the part

29
Q

what is turning on a lathe

A

workpeice is spinning tool is atationary

30
Q

what are the 11 different types of turning operations

A

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

31
Q

what is facing

A

tool is fed inward (purpindicular to workpeice axis)

32
Q

what is taper turning

A

cutting on an angle

33
Q

what is countor turning

A

feeding the tool followiing the countor of the shape

34
Q

what is form turning

A

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

35
Q

what is chamfering

A

cutting the edge of a cylinder forming a chamfer

36
Q

what is grooving/part off

A

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

37
Q

what is importamt when face grooving

A

looking at tool clearence

38
Q

what is threading

A

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

39
Q

what is drilling

A

work ritating drill not

40
Q

what is boring

A

inceasing diameter of exsisting hole

41
Q

what is the difference between boring and turning

A

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

42
Q

what are the difficulties when boring

A

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

43
Q

what is step boring

A

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

44
Q

what is knurlinh

A

where a pattern is rolled onto the material to create texture

45
Q

what are the 2 types of knurling

A

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