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TitleComputer Applications in Near Net-Shape Operations
Author
LanguageEnglish
File Size12.9 MB
Total Pages335
Document Text Contents
Page 1

Advanced Manufacturing

Springer-Verlag London Ltd.

Page 2

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152 __________ Computer Applications in Near Net-Shape Operations

After the cooling line design, ejection pins design and mould component
dimensioning have been completed, the general mould assembly can be designed.
The mould drawings and data for injection moulding process simulation and NC
modules are provided by the graphics editor. The program flowchart shown in
Figure 4.3 gives the relationship and flow direction of the steps in the CAD stage.

Figure 4.3: The program flowchart of CAD modules.

4.3.2 Standard mould base design

Selection of the standard mould base is very important for mould structure design.
The components of a standard mould base are shown in Figure 4.4.

Page 168

Chapter 4: CADICAElCAM!or injection moulding ___________ 153

Many countries have their own standard mould bases, such as the D.M.E of
U.S.A., D.M.S of U.K., Hasco of Germany and Futoba of Japan. In D.M.E, there
are seven typical series of mould assemblies. The A-series, AR-series and B-series
mould assemblies belong to the two-plate mould base, while the X5-series, X6-
series and AX-series belong to the three-plate mould base.

2

3

4

5

6

7

L ,...J

r-,

~
~

----- ~ I -----I I I I
r~]

Figure 4.4: The components of standard mould base: (1) fIxed clamp plate,
(2) fIxed plate, (3) stripper plate, (4) moving plate, (5) support plate,
(6) spacer parallel, (7) screw, (8) moving clamp plate, (9) stop pin,

(10) ejector plate, (11) ejector retainer plate, (12) return pin,
(13) guide pillar straight, and (14) guide bush.

14

13

12

11

10

9

8

The A-series is the most frequently used mould assembly. The AR-series is
identical to the A-series, except that the leader pin and bushings are reversed. For
the A-series and AR-series, the cavities or cores can be fIrmly mounted in the mould

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320 __________ Computer Applications in Near Net-Shape Operations

Polygonization, 20
Polymer, 145-155, 156, 159, 161, 167-170, 172, 174-175
Prandtl number, 170, 175
Pre-form, 95-97, 99-100, 108, 119, 122, 138, 187
Press, 2-3, 27, 34, 49-50, 61, 91-93, 96, 124, 132, 140,207,250,255-259,261,

310-313
brakes, 49,51,257
die-forging, 96

Pre-stressing force, 188, 216, 222, 226, 229-231, 235
Production scheduling, 177
Progressive dies, 13, 34-36,42,44,285,287,310-313
Punchability, 27, 32
Punches, 37, 61,64-70, 72-75, 78,85,290,299,306-307
Push-rod, 142-144

Q

Quadrilateral elements, 203, 247

R

Radial extrusion, 188,206-208,223
Reynolds number, 175
Rheology, 145
Rigid-plastic, 188, 196, 199,203-208,210-212,250
Robot, 93,259,263
Runners, 4, 156, 159-160,186,266,269,276,284

s
Serial interface, 253, 260
Server, 285
Shifting fork, 124
Short shots, 185
Shrinkage, 147, 151, 155,269,273-274
Simulation, 4, 49-50, 57-59, 61- 63, 92, 95-96,146,152,160,166,176,178,184-

188,195-196,199,203,206-215,247,250,252,260-261
Slider module, 270
Slots, 15-16,32,37,40, 180,294
Sprue bush, 269, 282-283
Stamping, 1,2,7-8,11,13-16,18,34-37,64, 72,76-77,84,92-93,285,293,295-

296, 300-312
Standard parts module, 272

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md~ ______________________________________________ 321

Stiffness matrix, 205
Stroke, 34, 64-65,67,69-70,74-75,208,211-212

T

Tail, 136
Temperature, 4, 95,147,161-166, 168, 170-176, 186-187, 196, 199,213,216,231-

232,236
Tree structure, 11, 273
Triangular mesh, 188-189

U

Upsetting, 96-98, 100-10J, 105-111, 116-117, 119, 126,206,211-212
-backward extrusion process, 188,208,210,212-213
bowl die, 110

Upsetting ratio, 100

V

Vee ring, 26, 32-34
Velocity, 95, 199,204,208-210,237-240,247,252,254

field, 199,204,208-210
nodes, 247

Viscous-heating, 163
von Mises yield criterion, 204

W

VVarpage, 146, 148, 169, 185
VVeighted graph, 37-38, 47-48
VVeld lines, 147
VVire, 3, 34, 84, 85, 87-90, 92, 180

EDM, 3, 34, 84-85, 88, 90, 92,180
offset, 84

VVire-frame, 11,30,50,57,61, 148-149, 150,285

y

Yield stress, 205, 234

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