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Flashcards in Lec7 Deck (20)
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1

Methods to produce round parts or features

turning
facing
drilling
boring
parting
threading
knurling

2

General process for making round parts

part is rotated while being machine usually on a lathe

3

Basic components of a lathe

bed
carriage
headstock
tailstock
free rod
load screw

4

What is a turret lathe

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

5

Shapes produced by turning

shafts spindles pins handles

6

Types of turning

straight turning
taper turning
contour turning
form turning

7

What does facing produce

a flat surface at the end of part

8

What does drilling produce

a hole

9

What may drilling be followed by

boring to improve accuracy and finish

10

What does boring do

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

11

Parting

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

12

Thread cutting

internal or external threads

13

What does knurling produce

regularly shaped roughness on cylindrical surfaces

14

What is material removal rate

Volume of material removed per unit time

15

MRR of turning

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

16

D1
D2
L
dc
Ns
Vc
Vt
fr
MRR

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

Boring MRR equation same as

Turning process

18

MRR for facing

fr x dc x pi x D1/2 x Ns

19

MRR for parting same as

facing

20

MRR for drilling

pi * r^2 * fr * Ns