Hello Guest it is March 28, 2024, 11:57:18 AM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - RICH

Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 »
201
General Mach Discussion / Re: Mach 3 backlash not working
« on: August 15, 2018, 07:24:55 AM »
Backlash is functional in Mach3, never tested it with version 66, does work in 62.
I echo Jerry's reply ............ And if you are using a motion controller, it's possible that it doesn't support backlash comp.

BTW, Try setting a large value for backlash ( say .1" ) with a slow shuttle wheel and  backlash speed setting. 

RICH

202
General Mach Discussion / Re: Mach 3 backlash not working
« on: August 13, 2018, 08:45:57 AM »
Quote
tried the 50/50/50 stuff


The 50/50/50 rule that I posted  is a good  general setting. To see just how BC works you need to play with
the individual settings  and carefully watch what is happening in the movement. BC is only done when change of direction takes
place. I don't know what the mechanics of your  Z axis mechanical makeup is and in that light I can only say that the best approach would be to eliminate the backlash. BC can be used to make a poor axis become functional but only to some degree of accuracy.  Don't use ver 66 here so no comments on that versions use. I would suggest that you profile the complete Z axis travel in both directions of movement  to check variance in accuracy and then strategically test BC at some locations  based on what you found in profiling of the axis movement.

RICH

203
General Mach Discussion / Re: Problems with ver. ...062 on WinXP
« on: August 07, 2018, 05:59:02 PM »
The backplot of the gcode was for absolute IJ mode which is my default mode of operation. Should have mentioned that in my reply.

RICH


204
General Mach Discussion / Re: Problems with ver. ...062 on WinXP
« on: August 07, 2018, 08:31:20 AM »
Quote
No. It´s nothing wrong with the g-code
.

So you say. ;)
The attached file shows the pathing. Notice that the pathing is NOT based on the center of the sphere.

RICH

205
The trick is to be able to isolate each item that makes up the system and glad you found the culprit.

RICH

206
General Mach Discussion / Re: Knocking X axes, whats going on ??
« on: July 17, 2018, 06:11:16 PM »
Quote
why would it do it with Mach 3 and not with Mach 4

Have no answer to that question. It would be interesting to see the signal output from both since it's the same computer and
and physical pp port.

RICH

207
General Mach Discussion / Re: Knocking X axes, whats going on ??
« on: July 17, 2018, 07:24:38 AM »
I would suggest you have a look at the pulse stream with an o'scope. You may find that there is ringing on the generated pulse stream. Usually it would be constant but it can be random. You need to get rid of it at the source and can be difficult to remove.
 The ringing will just carry through to other electronic devices if you don't eliminate it.

RICH

208
Quote
an accurate 1000mm steel rule and microscope over the full length of the rule

Just a few thoughts on the matter.
The basis for any measurement is the reference you are using which provides comparison of length.
You should have complete confidence in the reference you use. The optical metal scales we used were
calibrated. A 1000mm calibrated scale would be VERY  expensive and any deviation from a start point
to over the entire length and between divisions are known. Can measure to 0.001" ( 0.0254 mm) @ 17 feet
for example.

The scale you have is surely not to the caliber above,but, is usable to a degree, and only if the calibration
reference used is acceptable. I doubt very much that your scale is accurate to 0.05mm (0.002") at all locations
along it's length. Remember any measurement is only as accurate as the reference used! Also note that a mesurment
is only relative to the length being measured. Yes, you can then compare different items measured, but any difference is
realy only relative to the reference used ( may i also add that setup for measuring is very important).  

So one can ask a seemingly stupid question "whats your reference to the linear length measured".

Just some things to think about ..........

Practicaly speaking, one must ask "What is being measured"?
It is length, but that lenght is made up of individual components. The gear box should be repetative in one direction
over it's complete reduction, but it probably will not be in the opposite direction and  would say the same for the rack & pinion.
Now if you are using an electronic device which is based on steps to relate to length then likewise you should have confidence
that the steps are correct. Now you need a different calibration device. We used a calibratated counter accurate to four  parts
in 29x10 6th.

So if one wants to be anal about calibrating their machine, I will just say that you have what you  have, each component is contributory
to the system accuracy, and what you measure is only as good as the basis.


BTW, I also believe it is your rack & pinion along with the gear box. Need to isolate each and compare to the other axis to
be meaningfull.

FWIW,
RICH

209
Mach4 General Discussion / Re: G-Code for Mach4 vs. Mach3
« on: July 13, 2018, 05:43:53 AM »
dave,

There are differencs in the gcodes. Would have thought that CamBam would have a
Mach4 postprocessor available, but if not, would suggest you get info on which Fanuc
version is being used by CamBam and compare to current Mach 4 definitions of Gcode.

Don't modify a postprocessor  if you do not understand what your doing.

RICH

210
Quote
I can talk AND piss you off at the same time! LOL

I know it would be a "stretch" from your home location so maybe off is better than on. LOL  :D

Back to the sidelines...........

RICH

Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 »