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MEC130 Other > Lec7 > Flashcards

Lec7 Flashcards

1
Q

Methods to produce round parts or features

A 
turning
facing 
drilling
boring
parting
threading
knurling
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2
Q

General process for making round parts

A

part is rotated while being machine usually on a lathe

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3
Q

Basic components of a lathe

A 
bed
carriage
headstock
tailstock
free rod
load screw
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4
Q

What is a turret lathe

A

More complex multi tool heads and are CNC version of a lathe

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5
Q

Shapes produced by turning

A

shafts spindles pins handles

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6
Q

Types of turning

A

straight turning
taper turning
contour turning
form turning

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7
Q

What does facing produce

A

a flat surface at the end of part

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8
Q

What does drilling produce

A

a hole

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9
Q

What may drilling be followed by

A

boring to improve accuracy and finish

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10
Q

What does boring do

A

Englarges a hole made by a previous process in a tubular workpiece or to produce internal grooves

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11
Q

Parting

A

cutting off, to cut a piece off making slugs or blanks for additional processing into discrete products

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12
Q

Thread cutting

A

internal or external threads

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13
Q

What does knurling produce

A

regularly shaped roughness on cylindrical surfaces

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14
Q

What is material removal rate

A

Volume of material removed per unit time

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15
Q

MRR of turning

A

Feed rate (fr) * depth of cut (dc) * pi * (Outer diameter (D1) * Inner diameter (D2) /2) * spindle speed

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16
Q 
D1
D2 
L 
dc
Ns
Vc
Vt
fr
MRR
A 
D1 outer diameter
D2 inner diameter
L length of workpiece
dc depth of cut
Ns spindle speed
Vc cutting speed
Vt tool speed
fr feed rate
MRR material removal rate
17
Q

Boring MRR equation same as

A

Turning process

18
Q

MRR for facing

A

fr x dc x pi x D1/2 x Ns

19
Q

MRR for parting same as

A

facing

20
Q

MRR for drilling

A

pi * r^2 * fr * Ns

MEC130 Other (13 decks)

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