CNCzone.com-The Largest Machinist Community on the net!



Home Page Mark Forums Read Today's Posts My Replies Classifieds Reviews Photo Gallery Web Links Share Files Advertise With Us Ad List
Go Back   CNCzone.com-The Largest Machinist Community on the net! > Machine Controllers Software and Solutions > LinuxCNC (formerly EMC2)


LinuxCNC (formerly EMC2) Discuss LinuxCNC (formerly EMC2) Controlers here!


This forum is sponsored by:

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Ban this user!
Old 09-24-2011, 05:46 PM
 
Join Date: Mar 2008
Location: New Zealand
Posts: 70
willheg is on a distinguished road
Reseting z to 0 in a program

Hi there everyone

just a quick question on something i have been thinking of for my mill i'm starting to build after a few years of ideas, buy bit's and peices and just mucking round with the idea.

anyway what i would like to know is if there is a way when you create a gcode program if when a tool change is done is there anyway to rehome the z to 0 by using something like a touch of plate and having it happen automaticly in the program after the tool is changed??

Any help would be great and thanks in advanve

Will
Reply With Quote

  #2   Ban this user!
Old 09-24-2011, 11:35 PM
 
Join Date: Mar 2004
Location: St. Louis, MO
Posts: 309
jmelson is on a distinguished road

Originally Posted by willheg View Post
Hi there everyone

just a quick question on something i have been thinking of for my mill i'm starting to build after a few years of ideas, buy bit's and peices and just mucking round with the idea.

anyway what i would like to know is if there is a way when you create a gcode program if when a tool change is done is there anyway to rehome the z to 0 by using something like a touch of plate and having it happen automaticly in the program after the tool is changed??

Any help would be great and thanks in advanve

Will
Well, the best way is to preset all your tools, and use something like end mill holders so that the tools are always at repeatable length when installed. Then, you enter the offsets in the tool table.

But, there are touchoff plates that have been added to EMC2 so that automatic touchoff can be done. This may require you to use a development version of EMC. And, of course, if there is a chip on the touchoff plate or end of the end mill, you may not get an accurate setting. This was discussed on the EMC2 forums about 2 weeks ago, I think.

Jon
Reply With Quote

  #3   Ban this user!
Old 09-25-2011, 03:38 AM
 
Join Date: Mar 2008
Location: New Zealand
Posts: 70
willheg is on a distinguished road
Thanks

Hi Jon

Thanks for the information, with the way the machine will be setup i will only be using collets in a drill style/dremal sort of thing, so having the tool in a tool holder and using offsets is kinda outta the question.

This is why i thought of maybe a touch off plate and reset the z 0 point but now i'm stuck for what code i would need to use in the program to reset the z 0 point or how to instruct emc2 to do this and how to set it up.

Do you have a link to the related article on emc2??? if so could you post it.

Thanks again.
Will.
Reply With Quote

  #4   Ban this user!
Old 09-25-2011, 12:00 PM
 
Join Date: Mar 2004
Location: St. Louis, MO
Posts: 309
jmelson is on a distinguished road

Originally Posted by willheg View Post
Hi Jon

This is why i thought of maybe a touch off plate and reset the z 0 point but now i'm stuck for what code i would need to use in the program to reset the z 0 point or how to instruct emc2 to do this and how to set it up.

Do you have a link to the related article on emc2??? if so could you post it.

Thanks again.
Will.
The search feature in the linuxcnc.org forums has a problem so that you can only see
the first page of the search results. I will ask and see if anyone can find the thread or
where this feature is documented.

Jon
Reply With Quote

  #5   Ban this user!
Old 09-25-2011, 04:44 PM
 
Join Date: Mar 2004
Location: St. Louis, MO
Posts: 309
jmelson is on a distinguished road

Originally Posted by willheg View Post
Hi Jon

Do you have a link to the related article on emc2??? if so could you post it.

Thanks again.
Will.
I think this is what you are looking for :
Calibrating tool length with a probe in EMC2 — jager.no

Jon
Reply With Quote

Sponsored Links
  #6   Ban this user!
Old 09-25-2011, 11:13 PM
 
Join Date: Nov 2005
Location: Canada
Posts: 465
chester88 is on a distinguished road

This is not automatic but could be, note it requires the tool to be grounded:

EMC Documentation Wiki: ClassicLadderExamples

just for more ideas
Reply With Quote

  #7   Ban this user!
Old 09-26-2011, 01:38 AM
 
Join Date: Mar 2008
Location: New Zealand
Posts: 70
willheg is on a distinguished road
thanks for the help

Hi guys.

Thanks for the help it's very good of you people.

i like the one jmelson has posted as it looks like i could just put this in my gcode file after every tool change and away i go.

the one that chester88 posted looks good to but confussed me to hell and back as i do not see how to put it in the gcode program after a tool chang is implimented, but still a good post.

Once again thanks guys and if i have anythingt else i'm sure i'll be back.

Will
Reply With Quote

  #8   Ban this user!
Old 09-26-2011, 04:31 AM
 
Join Date: Nov 2005
Location: Canada
Posts: 465
chester88 is on a distinguished road

for your use there is no need for the classicladder stuff. You could just use the plate instead of a probe or switch. by following the directions John linked for you.
Reply With Quote

  #9   Ban this user!
Old 09-26-2011, 11:50 PM
 
Join Date: Mar 2008
Location: New Zealand
Posts: 70
willheg is on a distinguished road
thanks

cool that sounds good, thanks for the help will have to try it sometime

Will
Reply With Quote

Reply

Tags
emc, homing, touch off, z axis




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Outputting Common variable values into a program (with automated program number) yaji63 Fanuc 0 12-27-2010 02:55 AM
Reseting of over sized tools andyhol Mori Mills 0 02-26-2010 01:52 PM
acramatic 2100,reseting time-date lineborn Cincinnati CNC 1 06-12-2009 10:41 AM
Need Help!- Reseting the A axis NIKITEC Haas Mills 3 05-17-2008 08:11 PM
Anyone got any basic examples of a program using a subroutine/program? Darc CamSoft Products 11 10-08-2005 11:45 PM




All times are GMT -5. The time now is 05:06 AM.





Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2012, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO
Template-Modifications by TMS

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