LIBRARY ı6ıul 0) - Cranfield University

More documents

Recommendations

Info

33 31 Viewing direction 1 Flange $, 29 Vmean 27 o 25 0 25 53 82 110 139 168 196 ä 280 = c d 270 260 250 240- 0 25 53 82 110 139 168 196 4 2mm 1 . Vset Imean 18 - ----"SOreq 16 SOact ul 13 . __ 0 25 53 82 110 139 168 196 6+ ý 0 mm WFS =11 Om min S= 0.8 mimin _ Figure 7.27 - Bead appearance and bead profiles along the weld for the voltage and stand-off controlled welding trial SV4. 0 25 53 82 110 139 168 196 Position along the weld [mm] Figure 7.28 - Vr eiutng aata ana Dean geometry obtained from test SV4 183 Robot Table ý
en 34 32 - vsec 30- 26- 24 + .. ++ 0 25 52 80 108 135 163 191 260 18 16 12 12 -- 10-- 8 6 2 0 Figure 7.29 - Bead appearance and bead profiles along the weld for the voltage and stand-off controlled welding trial "SV5". 0 25 7.. r 0 25 0 25 52 80 106 135 163 181 52 80 108 135 163 191 52 80 108 135 163 191 Position along the weld [mm] Figure 7.30 - Welding data and bead geometry obtained from test SV5 184 ...... Imean SOreq SOact SOest Robot Table
Page 1 and 2:
CRANFIELD UNIVERSITY GC CARVALHO AN
Page 3 and 4:
ABSTRACT The aim of this work was t
Page 5 and 6:
I dedicate this work to the memory
Page 7 and 8:
FIGURES TABLES APPENDICES NOTATION
Page 9 and 10:
3.3.2.1 Welding parameters generato
Page 11 and 12:
References Further reading Appendic
Page 13 and 14:
Figure 3.12 Offsets for weld start
Page 15 and 16:
Figure 6.31 Voltage step input test
Page 17 and 18:
Figure J. 2 Plot of stand-off varia
Page 19 and 20:
Table A. 1 Welding extended entity
Page 22 and 23:
NOTATION A, Electrode sectional are
Page 24 and 25:
Pr(ign) Possibility measure of proc
Page 26 and 27:
1. Introduction Welding is the thir
Page 28:
Chapter 4 describes the on-line pos
Page 31 and 32:
In pulse transfer, the welding curr
Page 33 and 34:
Pd = Pv - pzh-s (2.1) where Pd is t
Page 35 and 36:
the bridge. Another factor that ind
Page 37 and 38:
establish the stable conditions for
Page 39 and 40:
Philpott [ref. 21] developed an on-
Page 41 and 42:
current peak at the moment the tip
Page 43 and 44:
obot on the line must be individual
Page 45 and 46:
collision detection capabilities wh
Page 47 and 48:
cause dynamic variation in the seam
Page 49 and 50:
Another type of robot static calibr
Page 51 and 52:
spatter the gas nozzle is particula
Page 53 and 54:
Table 2.1: Joint positioning tolera
Page 55 and 56:
In order to minimise the undesirabl
Page 57 and 58:
c) Ultrasonic sensors; d) Through-t
Page 59 and 60:
where K,, K2, K3 and K4 are constan
Page 61 and 62:
Philpott [refs. 21,131], based on t
Page 63 and 64:
centre. This is attributed to the m
Page 65 and 66:
technique must be employed to preve
Page 67 and 68:
" digital hardware, which is basica
Page 69 and 70:
" Maximum value, W.: Wmý = max(W )
Page 71 and 72:
process studied over a small range.
Page 73 and 74:
In-process welding control is a muc
Page 75 and 76:
volume caused by the presence of a
Page 77 and 78:
SHIELDING GAS IN CONSUMABLE ELECTRO
Page 79 and 80:
Arc voltage Anode Arc length I Anod
Page 81 and 82:
computed ideal procedure optimisnti
Page 83 and 84:
CONSTANT CURRENT POWER SOURCE `j' O
Page 85 and 86:
Original Surface New Surface Electr
Page 87 and 88:
otating welding wire direction weld
Page 89 and 90:
3.1.1.1 Robot errors A robot arm is
Page 91 and 92:
3.2.2 Programming error correction
Page 93 and 94:
3.3.2 Off-line programming module I
Page 95 and 96:
Pen is the weld penetration (side p
Page 97 and 98:
a. 2) Geometrical constraints from
Page 99 and 100:
Step 11 Step 12 Step 13 Step 14 Ste
Page 101 and 102:
Step 21 Step 22 If the wire feed sp
Page 103 and 104:
the Y'-axis results in a positive "
Page 105 and 106:
_ p1e0a - pORoba m31 Ilp! - poll (3
Page 107 and 108:
of a robot in its zero position12 w
Page 109 and 110:
frame points to the front of the ro
Page 111 and 112:
CAD Off-line (AutoCAD) programming
Page 113 and 114:
Z Surface 4 A Y 7 M2 Open Edge Join
Page 115 and 116:
WCF World Co-ordinates Frame 2a = J
Page 117 and 118:
x Torch Co-ordinates Frame o Indica
Page 119 and 120:
vo Ö 't7 Y7 't O m O 'S O O S O S
Page 121 and 122:
ýý aý 0 oA aW ö A O Zt A OO 't
Page 123 and 124:
Ti 9ý-! i4 *Tx t ap31 jx ý- ymin
Page 125 and 126:
errors', (i. e. joint positioning,
Page 127 and 128:
was considered to be outside the sc
Page 129 and 130:
Table 4.3 - Linguistic representati
Page 131 and 132:
The introduction of such a reduced
Page 133 and 134:
Table 4.8 - Final welding process c
Page 135 and 136:
the collection of welding data corr
Page 137 and 138:
Step 4- Calculate the confidence of
Page 139 and 140:
Z Table Co-ordinates Frame Y X Robo
Page 141 and 142:
5.3 Monitoring system The monitorin
Page 143 and 144:
the torch end. Only one degree of f
Page 145 and 146:
Current: 500 Position: 234.5 5.7.3
Page 147 and 148:
I" va JI ºr ö C 3 r" r" rl f_ £-
Page 149 and 150:
IgurC a. H -I UI qur vCiSUJ JpCCU C
Page 151 and 152:
126
Page 153 and 154:
Table 6.1 - Welding trials carried
Page 155 and 156:
Table 6.3 - Coefficients of Ogunbiy
Page 157 and 158: Note that the calibration model sho
Page 159 and 160: Table 6.6 - Welding parameters used
Page 161 and 162: constant set-up welding parameters
Page 163 and 164: stickout lengths and the temperatur
Page 165 and 166: of the dip mode of metal transfer.
Page 167 and 168: which would become active by settin
Page 169 and 170: In section 4.2.5 it has been mentio
Page 171 and 172: 300 280 260 240 rd 35- 3D 25 20 15
Page 173 and 174: Figure 6.5 - Measured "versus" Pred
Page 175 and 176: i S 0 -0.1 -0.2 -0.3 -0.7- 68 10 12
Page 177 and 178: 32.0 E 31.5 y 31.0 30.5 30.0 j 29.5
Page 179 and 180: 35 - 30 p 15 10 0.00 2.60 5.42 8.23
Page 181 and 182: 40 35 30 25 20 15 10 A+iIII+F0.17 2
Page 183 and 184: 30 28 26 24 22 SO_act [mm] DipR [mo
Page 185 and 186: 22 20 18 SO_act [mm] DipR [ohm/100]
Page 187 and 188: !: 30 25 20t 10 5-- 0 Dip Transfer
Page 189 and 190: 0.430- - 0.380- - :r 0.330 fPR L- 0
Page 191 and 192: 7.2 Tests with varying stand-off an
Page 193 and 194: Table 7.3 - Bead geometry along the
Page 195 and 196: ö a2 ., u" u,.., g .,. aucyuaac VI
Page 197 and 198: 0 24-- 22-- 18 210 1 90 0 v 170 mm
Page 199 and 200: Q 34 32 3o mIm Viewing direction Fl
Page 201 and 202: ýa 34 mm JO a .. ý nn ýr "u 00 M
Page 203 and 204: 22 20 18 Viewing direction Flange W
Page 205 and 206: 36 33 31 o 29 t 350 310 o 290 U due
Page 207: I C, x -i 23 21 j 19 Q 240c WFS =10
Page 211 and 212: 186
Page 213 and 214: " to design and build the hardware
Page 215 and 216: Although only linear joints were im
Page 217 and 218: for predicting possibility of bad a
Page 219 and 220: 8.4 Process monitoring and control
Page 221 and 222: satisfy the required quality criter
Page 223 and 224: 198
Page 225 and 226: types of joints and multi-pass weld
Page 227 and 228: [14] NEMCHINSKY, V. A. The effect o
Page 229 and 230: [38] D1LTHEY, U. , REICHELL, T. , S
Page 231 and 232: [64] KING, F-J. and HIRSCH, P. Seam
Page 233 and 234: [86] CARGNELLI, M. and ROGOWSKI, A.
Page 235 and 236: [109] KURKIN, N. S. and DRIKKER, V.
Page 237 and 238: [130] USHIO, M. , LIU, W. , MAO, W.
Page 239 and 240: [151] DAVIS, A. R. Orr-line gap det
Page 241 and 242: [177] COOK, G. E. Feedback and adap
Page 243 and 244: [201] WON, Y. J. and CHO, H. S. A f
Page 245 and 246: 220
Page 247 and 248: 222
Page 249 and 250: wnum: local variable which defines
Page 251 and 252: Table A. 1 - continuation List item
Page 253 and 254: Imean = a2 + b2*WFS + c2*SO + d2*SO
Page 255 and 256: TCP2 number are also defined. The o
Page 257 and 258: f ROBSET. DAT: This file is created
Page 259 and 260:
Figure C. 3 - Main dialogue box of
Page 261 and 262:
Choose the set of welding parameter
Page 263 and 264:
Water Cooling optic fibre bundle 0
Page 265 and 266:
Figure E. 1 - Main graphical screen
Page 267 and 268:
242
Page 269 and 270:
Table G. 2 - Interface box external
Page 271 and 272:
Robot ii Controller +24W CO . +24Vd
Page 273 and 274:
248
Page 275 and 276:
Table 1.1 - continuation Run Vpk M
Page 277 and 278:
10- y =0.001ac 0 r. dSO [mm] $0 '10
Page 279 and 280:
5.00- 0.00 y=0.0019x 1000 1500 2000
Page 281 and 282:
Table J. 7 - Welding data collected
Page 283 and 284:
Table J. 10 - Welding data collecte
Page 285 and 286:
Page 287 and 288:
20.00- 15. M y=0.0047x - 1.7922 10.
Page 289 and 290:
Page 291 and 292:
266
Page 293 and 294:
Table K. 1- continuation Set-up par
Page 295 and 296:
Table K. 1 - continuation Set-up pa
Page 297 and 298:
Table K. 2 - continuation Set up pa
Page 299 and 300:
Table K. 2 - Continuation Set-up pa
Page 301 and 302:
Table K. 3 - Continuation Set-up pa
Page 303:
Table K. 3 - Continuation Setup par
show all

LIBRARY ı6ıul 0) - Cranfield University

Create successful ePaper yourself

Delete template?

Save as template?