Metal Machining - Theory and Applications Episode 1 Part 8 ppsx
Metal Machining - Theory and Applications Episode 1 Part 8 ppsx
... sintered steel and
Inconel 7 18
0.05
0.02
0 .1 0.2 0.5 1. 0 2.0
5
10
20
40
60
80
99
85
Flank wear VB (mm)
P10
Sintered steel
P10
B 111 2
TiC-Al
2
O
3
ceramic
Inconel 7 18
VB
max
B 112 - P10, V = 200m/min, ... 0.1mm/rev
Sintered steel - P10, V = 200m/min, d = 0.5mm, f = 0.1mm/rev
Inconel 7 18 - Al
2
O
3
-TiC ceramic, V = 200m/min, d = 0.5mm, f = 0 .19 mm/rev
Cumulative...
Metal Machining - Theory and Applications Episode 1 Part 10 ppt
... h
c
Non-orthogonal (three-dimensional) machining 18 7
Childs Part 2 28: 3:2000 3 :13 pm Page 18 7
18 2 Advances in mechanics
(b)
(c)
Fig. 6 .15
continued
Childs Part 2 28: 3:2000 3 :13 pm Page 18 2
is ... 6.4 .8.
Non-orthogonal (three-dimensional) machining 18 1
Fig. 6 .15 Uncut chip cross-sections in single point turning: (a) case 1, (b) case 2, (c) case 3 and (d) case 4
(...
Metal Machining - Theory and Applications Episode 1 Part 9 pptx
... Smart, E. F. and Milner, D. (19 70) The metallurgy of machining, Part 1. Metallurgia
81 , 3 10 .
15 8 Experimental methods
Childs Part 2 28: 3:2000 3 :11 pm Page 15 8
Over the exit boundaries BD and DA′, ... Emission 3, 10 8 11 6.
Miwa, Y., Inasaki, I. and Yonetsu, S. (19 81 ) In-process detection of tool failure by acoustic emission
signal. Trans JSME 47, 16 80 16 89...
Metal Machining - Theory and Applications Episode 1 Part 7 ppt
... (min)
15 0 m min
-1
15 0 m min
-1
236 m min
-1
Turning
Milling
236 m min
-1
Crater depth ( µm)
Depth of cut :1. 0mm Feed rate: 0.2 mm rev
-1
Flank wear (mm)
Fig. 4 .8 Comparisons of wear when milling and ... carbon steel with a P10 cemented carbide tool,
after Yamane and Narutaki (19 83 )
d :1. 0 mm, f: 0.2 mm tooth
-1
Real cutting time: 1. 9 min
0. 01
0 .1
1...
Metal Machining - Theory and Applications Episode 1 Part 6 pdf
... 400 20– 28 6–7.5
WC-Co* 4.5–6.0 550–650 75 12 0 50–75
WC-TiC-TaC-Co* 5 .8 6 .8 490–560 25–55 20–50
Co ≈ 12 ≈ 18 0 70 –
* from Table 3.5.
Childs Part 1 28: 3:2000 2:40 pm Page 11 1
200 to 10 00 MPa and a ... 3 .1 960–990 –
PCD 10 0–550 2.0** 3 .8 4.2 620 84 0 14 0–540
PcBN 10 0* 1. 9–2 .1 4.7–4.9 680 – 710 15 0–340
K-carbide 75 12 0 3.0–3.4 4.5–6.0 550–650 390–925
P-carbide 2...
Metal Machining - Theory and Applications Episode 1 Part 5 potx
... Carbide
CVD coated 0.2–0.5 3–7 1. 2 1. 9 2 .8 1. 8
Ground 0 .1 0.25 2–4 1. 2 1. 9 2 .8 1. 8
Super-finished 0.03 0.4 1. 2 1. 9 2 .8 1. 8
Childs Part 1 28: 3:2000 2: 38 pm Page 73
2.4.3 Wear in metal cutting
Finally, ... Mech. 18 , 405– 413 .
Mallock, A. ( 18 81 82 ) The action of cutting tools. Proc. Roy. Soc. Lond. 33, 12 7 13 9.
Merchant, M. E. (19 45) Mechanics o...
Metal Machining - Theory and Applications Episode 1 Part 4 pot
... 2.2
k/
ρ
C 11 0–220 85 14 0 50 16 0 12 0–200 220–320
∆T
1
[°C]
a
230–470 18 0–300 11 0–340 250–430 470– 680
K
work
[W/m K] 25–45 10 0–400 10 0–300 15 –20 6 15
K
tool
b
[W/m K] 20–50 80 12 0 10 0–500 80 12 0 50 12 0
K* ... al. (19 72)
Brass/carbide 30 48 0.3 450 0.9 0.95 Shirakashi and Usui (19 73)
C steel/carbide 10 46 0.3 600 1. 3 0 .8 Shirakashi and Usui (19 73)
Low a...
Metal Machining - Theory and Applications Episode 1 Part 3 pot
... ferrous and
non-ferrous chips observed through a microscope at about five times magnification (Figure
Fig. 2 .1 Early chip observations by (a) Tresca ( 18 78) and (b) Mallock ( 18 81 82 )
Childs Part 1 28: 3:2000 ... 2 .12 A range of possible rake face contact pressure distributions
σ
n
/
k
, for
α
= 0º,
φ
= 10 º and
λ
= 35º and
n
=
(a) 1/ 2, (b) 1/ 3 and (c) 1/ 6
Chi...
Metal Machining - Theory and Applications Episode 1 Part 2 pps
... 0.27
C
t
[£] 15 15 15
Fig. 1. 28 Times and costs to remove metal by milling, for the conditions i and ii of Table 1. 7 compared with remov-
ing the same metal by turning (- - -)
Childs Part 1 28: 3:2000 ... 0 .85 ;
n
s
= 2 n
s
= 2 n
s
= 2 n
s
= 3
Mechanical 1 kW 6000 0.0 28
Simple CNC 1 kW 20000 0.092 0.060
5 kW 280 00 0 .13 0. 086
15 kW 50000 0.23 0 .15
Tu...
Metal Machining - Theory and Applications Episode 1 Part 1 potx
... from
Fig. 1. 1 International demand for machine tools, 19 78 88 , £bn at 19 85 prices (from European community statistics
19 88 ) and projected at that time to 19 95
Childs Part 1 28: 3:2000 2:32 pm Page 1
Contents
Preface ... in machining 82
3.2 Tool materials 97
References 11 7
4 Tool damage 11 8
4 .1 Tool damage and its classification 11 8
4.2 Tool life 13 0
4...
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