Re: [Emc-users] Inverse deadband - Anders Wallin
I'm using a 5i20 with the PWM amps. there's a schematic of approximately how it all fits together here: http://www.anderswallin.net/2008/09/servo-setup/ The HAL, ini, and pyVCP files are at the end of this post http://www.anderswallin.net/2008/04/emc2-test-run/ they may not be the very latest we use on the mill right now but they should be close enough. Anders, Could you please post your 7i43 HAL file to pastebin.com . I'm following in your foot steps with a 7i43 and one of Jon's PWM AMP's. Your file could save me a lot of time effort and posts. Thanks, Roger -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
The P number is how far you want to deviate from your path to maintain speed. http://www.linuxcnc.org/docview/html//gcode_main.html#sub:G61,-G61.1,-G64: The important part about the P number is if you use it it turns on the naive cam detector which is important when running fast with lots of short lines and arcs to maintain speed. John On 15 Jan 2009 at 6:03, Tom wrote: Sebastian Kuzminsky s...@... writes: Nice machine you got there For the lots of tiny moves, are you using Continuous Path Mode, G64? Thank you Sebastian, I was under the impression that G64 is the default. I have not tried using G64 with the P- parameter. Say, for example, if I was willing to tolerate a .0005 variance in the path, how would the text look in the G statement? (G64 P-.0005)? Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] RES: Successful Emc2 conversion (happy dance...)
Tom, bravo ! Are the parallel marks inside the part made on purpose or due to the multi layer milling ? Jorge L. -Mensagem original- De: Tom [mailto:kestrel...@yahoo.com] Enviada em: quinta-feira, 15 de janeiro de 2009 03:23 Para: emc-users@lists.sourceforge.net Assunto: [Emc-users] Successful Emc2 conversion (happy dance...) Emc2 community, I finally produced my first part on my new Kasuga/Emc2 (Mesa 5i20/7i33) knee mill conversion. I am very happy with the results! The mill will do 500 ipm rapids, and feeds so far can hit 30 ipm with very accurate results. Lots of tiny moves tend to slow the feedrates down a bit, but I have no complaints. See the following video sample of the toolpath being cut for a lightening pocket: http://www.youtube.com/watch?v=jWd29Vv1gcA Here is how I am handling manual tool changes: http://www.youtube.com/watch?v=Y2whmSV74vw Some more photos of the conversion and the first part to come from it (the part is a heavy duty triple tree for a V8 powered trike - to give you an idea of the scale, the polished fork tube in the following photos is 2 dia.): http://www.foxpointdesign.com/cnc_stuff/conversion_sm.jpg http://www.foxpointdesign.com/cnc_stuff/firstpart2sm.jpg http://www.foxpointdesign.com/cnc_stuff/tripleT-sm.jpg http://www.foxpointdesign.com/cnc_stuff/tripleT-sm.jpg http://www.foxpointdesign.com/cnc_stuff/ttclamp2-sm.jpg The parts are coming out s fine. No dwell marks, no backlash comp marks, just nice smooth surfaces. Accuracy is dead-on. I'm really happy right now :-) A hearty thank you to all of you who have taken the time and dedication to post your conversion information (Anders W.), as well as those who wrote the software, made the interface boards, and graciously answered all my questions and put up with my stupidities (Chris R., Peter W., Sebastian, John K., Alex, Kirk, Stephen W.P., et al.) Thank you all! Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
Great work. Congrats! Regards, Alex - Original Message - From: Tom kestrel...@yahoo.com To: emc-users@lists.sourceforge.net Sent: Thursday, January 15, 2009 7:22 AM Subject: [Emc-users] Successful Emc2 conversion (happy dance...) Emc2 community, I finally produced my first part on my new Kasuga/Emc2 (Mesa 5i20/7i33) knee mill conversion. I am very happy with the results! The mill will do 500 ipm rapids, and feeds so far can hit 30 ipm with very accurate results. Lots of tiny moves tend to slow the feedrates down a bit, but I have no complaints. See the following video sample of the toolpath being cut for a lightening pocket: http://www.youtube.com/watch?v=jWd29Vv1gcA Here is how I am handling manual tool changes: http://www.youtube.com/watch?v=Y2whmSV74vw Some more photos of the conversion and the first part to come from it (the part is a heavy duty triple tree for a V8 powered trike - to give you an idea of the scale, the polished fork tube in the following photos is 2 dia.): http://www.foxpointdesign.com/cnc_stuff/conversion_sm.jpg http://www.foxpointdesign.com/cnc_stuff/firstpart2sm.jpg http://www.foxpointdesign.com/cnc_stuff/tripleT-sm.jpg http://www.foxpointdesign.com/cnc_stuff/tripleT-sm.jpg http://www.foxpointdesign.com/cnc_stuff/ttclamp2-sm.jpg The parts are coming out s fine. No dwell marks, no backlash comp marks, just nice smooth surfaces. Accuracy is dead-on. I'm really happy right now :-) A hearty thank you to all of you who have taken the time and dedication to post your conversion information (Anders W.), as well as those who wrote the software, made the interface boards, and graciously answered all my questions and put up with my stupidities (Chris R., Peter W., Sebastian, John K., Alex, Kirk, Stephen W.P., et al.) Thank you all! Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Inverse deadband - Anders Wallin - Thanks
Anders, Thanks. That will save me a whole lot of experimentation. Roger -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
On Thursday 15 January 2009, Tom wrote: Tom kestrel...@... writes: Sorry for the repeated image. That was supposed to be... http://www.foxpointdesign.com/cnc_stuff/ttclamp1-sm.jpg Tom I have to say that is absolutely beautiful work, Tom. You should be proud to display it to potential customers, and they should likewise be impressed. But since I'm an old biker myself, I would never install a part like that on my bike, I have first hand seen the results of a broken one. At about 45mph. At first we thought he would be in a wheelchair the rest of his life, but he never made it from the bed to the wheelchair. That part needs more mass, lots more. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The beauty of a pun is in the Oy! of the beholder. -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
On Jan 15, 2009, at 7:22 AM, Gene Heskett wrote: On Thursday 15 January 2009, Tom wrote: Tom kestrel...@... writes: Sorry for the repeated image. That was supposed to be... http://www.foxpointdesign.com/cnc_stuff/ttclamp1-sm.jpg Tom I have to say that is absolutely beautiful work, Tom. You should be proud to display it to potential customers, and they should likewise be impressed. But since I'm an old biker myself, I would never install a part like that on my bike, I have first hand seen the results of a broken one. At about 45mph. At first we thought he would be in a wheelchair the rest of his life, but he never made it from the bed to the wheelchair. That part needs more mass, lots more. Indeed, really nice work. Good to see that level of workmanship on converted machines driven with EMC. On a big bike 4140, 4340 might be more appropriate material. Heat treat and chrome. Of course it is much more difficult to machine. It just depends on what your body is worth. ;-) Now if you really want to go nice Ti6Al4V would be the cats meow. (mucho $$$). Dave -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The beauty of a pun is in the Oy! of the beholder. -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] 'Radius to end of arc differs from radius to start' problem
hi guys, I have this error at line 10 (g2 code) when I try to load following code into emc2. I tried to set up MM_TOLERANCE=0.01 (even tried 0.1 and 1 values) with same error. I took a look at my emc tool table and it has Zero diameter tool. Previously I tried to generate this code with 3 decimal digits with same error. % G90 T1 G0X0Y0Z0M8 Z15. X-6.31398Y.25112 Z10. G1Z1.00118F250. X-6.30148F400. G2X-6.15148Y.18898I0J.21213 G3X-6.00148Y.25112I-.06213J-.06213 G1Y.50104 X-5.97067Y.46952 X-5.96747Y.4663 . What should I do ? Thanks, obana -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
Gene Heskett gene.hesk...@... writes: snip... But since I'm an old biker myself, I would never install a part like that on my bike, I have first hand seen the results of a broken one. At about 45mph. At first we thought he would be in a wheelchair the rest of his life, but he never made it from the bed to the wheelchair. That part needs more mass, lots more. Thanks for your concern Gene. I can see you are advocating for the good here, so I am inclined to listen carefully. I would like to offer a few more facts about the part: My customer's trike is a tried an proven design that has undergone iterative improvements for decades. Here is the website: http://www.lightningmotorcycles.com/specs2.html You can see a shot of the original tripleT here: http://www.lightningmotorcycles.com/specs2.html This design is my remake of the original which consisted of a .75 thick flat plate 7075 without lightening pockets. The original design withstood a 35 mph head-on collision without cracking, even though the forks were bent back about 45 degrees. I know the guy who endured the crackup and he is just fine, and drives his replacement whenever he can. Now, I will grant you that shallow clamping area of the original design may have tolerated greater flex without causing metal fatigue in the part - and therefore the newer design may experience internal stresses that were never seen by the old design. In fact, I think this will be the case. So what would it take to make you willing to put such a part on your bike. Would you be willing to forgo the lightening pockets altogether? Thanks! Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
Can you spell product liability insurance? I consider that to be an expensive, but necessary evil. Finite element analysis, fatigue testing, and destructive testing might also be useful. Ken Dave Engvall wrote: On Jan 15, 2009, at 10:38 AM, Tom wrote: Jon Elson el...@... writes: snip... This is for a ** V8 ** bike? Is this a showpiece, or something somebody is going to ride a lot? The milling of parts like this tends to leave sharp inside corners that worsens the problem. You might be able to get a stronger part by using a bull-nose end mill to get rid of the sharp corners. Jon Hi Jon, Yes my customer is making 10 more of these trikes, there are 6 or 7 currently in his shop. Yes, they get ridden quite a bit, as they handle really well, and are very comfortable to ride in for days at a time... not to mention super- fun fast;-) I agree re: radiusing the inside corners. I might possibly even get rid of the lightening pockets altogether, since the sum of weight saved would amount to only 10 oz or so - this is a heavy trike anyway. (See my response to Gene's comments) Tom 7075 only buys you something in bulk parts. I have no idea where the division between bulk and thin wall comes. I'm not so concerned about dynamic stress as I am about fatigue cracking. Decent radii on the corners will certainly help. One trick is to machine the part out of plexiglas and then heat to stress relieve. Then stress the part and view with polarized light; one can see the stress points and engineer the design to compensate from that knowledge. Boeing used a lot of 4340 and 300M for critical parts. Good luck. Dave -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Kenneth Lerman Mark Kenny Products Company, LLC 55 Main Street Newtown, CT 06470 888-ISO-SEVO 203-426-7166 -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 'Radius to end of arc differs from radius to start' problem
emc 2.2.8 shows the following error when your gcode is loaded: Radius to end of arc differs from radius to start: start=(X-6.3015,Y0.2511) center=(X-6.3015,Y0.4633) end=(X-6.1515,Y0.1890) r1=0.2121 r2=0.3126 this arc is noncircular by much more than the tolerance emc2 uses for arcs. Jeff -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] RES: Successful Emc2 conversion (happy dance...)
=?iso-8859-1?Q?Jorge_Louren=E7o_Jr.?= writes: Tom, bravo ! Are the parallel marks inside the part made on purpose or due to the multi layer milling ? Jorge L. Hi Jorge, Those marks are from multi layer milling. Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
tomp tomp-...@... writes: snip... something like this slotted tube may work on the knee screw raise knee way up insert spacer drop knee onto spacer raise knee remove spacer you get 2 known positions from an axis w/o a readout :) (hmm or more with a set of spacers) Hi tomp, Thanks for the idea. A practical time saver. I will give it a try. Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
Kenneth Lerman kenneth.ler...@... writes: snip... Can you spell product liability insurance? I consider that to be an expensive, but necessary evil. Finite element analysis, fatigue testing, and destructive testing might also be useful. Ken Hi Ken, Those are my customer's concerns. I trust him, and I assume so do his customers. Any product that remains on the market for decades will aquire destructive testing by default, and iterative improvements will follow. The trick for the designer/test driver, is to be the first to break his product. Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
Jon Elson el...@... writes: snip... This is for a ** V8 ** bike? Is this a showpiece, or something somebody is going to ride a lot? The milling of parts like this tends to leave sharp inside corners that worsens the problem. You might be able to get a stronger part by using a bull-nose end mill to get rid of the sharp corners. Jon Hi Jon, Yes my customer is making 10 more of these trikes, there are 6 or 7 currently in his shop. Yes, they get ridden quite a bit, as they handle really well, and are very comfortable to ride in for days at a time... not to mention super-fun fast;-) I agree re: radiusing the inside corners. I might possibly even get rid of the lightening pockets altogether, since the sum of weight saved would amount to only 10 oz or so - this is a heavy trike anyway. (See my response to Gene's comments) Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] RES: Successful Emc2 conversion (happy dance...)
On Thu, 15 Jan 2009 18:40:59 + (UTC), you wrote: Are the parallel marks inside the part made on purpose or due to the multi layer milling ? Jorge L. Hi Jorge, Those marks are from multi layer milling. Hi Tom - can't you remove them with a full depth finishing cut? Distinct edges like that are stress magnets ;) Steve Blackmore -- -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
Dave Engvall dengv...@... writes: snip... One trick is to machine the part out of plexiglas and then heat to stress relieve. Then stress the part and view with polarized light; one can see the stress points and engineer the design to compensate from that knowledge. Hi Dave, Wow! Thanks for the idea. I have designed made R/C aircraft parts before, and have been asked to do some full-scale work (manufacture, not design). The stressed plexi sounds like a super idea. Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
On Jan 15, 2009, at 1:11 PM, Tom wrote: Dave Engvall dengv...@... writes: snip... One trick is to machine the part out of plexiglas and then heat to stress relieve. Then stress the part and view with polarized light; one can see the stress points and engineer the design to compensate from that knowledge. Hi Dave, Wow! Thanks for the idea. I have designed made R/C aircraft parts before, and have been asked to do some full-scale work (manufacture, not design). The stressed plexi sounds like a super idea. Tom You'll have to check someplace (google) to find the critical temp for the stress relief. Dave -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 'Radius to end of arc differs from radius to start' problem
Take a look at the Arc Buddy on the wiki site on the g code generators page it will show you the proper code for an arc. John On 15 Jan 2009 at 18:40, Yuri wrote: hi guys, I have this error at line 10 (g2 code) when I try to load following code into emc2. I tried to set up MM_TOLERANCE=0.01 (even tried 0.1 and 1 values) with same error. I took a look at my emc tool table and it has Zero diameter tool. Previously I tried to generate this code with 3 decimal digits with same error. % G90 T1 G0X0Y0Z0M8 Z15. X-6.31398Y.25112 Z10. G1Z1.00118F250. X-6.30148F400. G2X-6.15148Y.18898I0J.21213 G3X-6.00148Y.25112I-.06213J-.06213 G1Y.50104 X-5.97067Y.46952 X-5.96747Y.4663 . What should I do ? Thanks, obana -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] board election
Hello all, Chris Radek has asked me to run the EMC board elections again, and it was my privilege to accept. I will be mailing ballots to each address from this address (mich...@ninthorder.com) within the next few days. Please make sure you are able to receive email from this address if you are interested in voting. Instructions for voting will be included with the ballot. Happy voting. Michael -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] RES: Successful Emc2 conversion (happy dance...)
Steve Blackmore st...@... writes: Hi Tom - can't you remove them with a full depth finishing cut? Distinct edges like that are stress magnets ;) Steve Blackmore Hi Steve, Those are tapered walls. The contours for those pockets are about 50 thou inset at the bottom of the pocket, so the walls are that much thicker down there. It might be worth investigating using a 3/8 endmill with a 1/16 radius end. That would give some gradation to each Z level step, plus the bottom cut would have the full radiused corners. H. Tom -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] RES: Successful Emc2 conversion (happy dance...)
Tom wrote: Steve Blackmore st...@... writes: Hi Tom - can't you remove them with a full depth finishing cut? Distinct edges like that are stress magnets ;) Steve Blackmore Hi Steve, Those are tapered walls. The contours for those pockets are about 50 thou inset at the bottom of the pocket, so the walls are that much thicker down there. It might be worth investigating using a 3/8 endmill with a 1/16 radius end. That would give some gradation to each Z level step, plus the bottom cut would have the full radiused corners. What you need is a 5-axis mill :) (nice stuff, by the way) - Steve -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] emcrsh says NAK
After the recent discussion about emcrsh I gave it a try tonight. This
is using the latest emc 2.2.8 on the latest Ubuntu 8.04.
As the note by Eric Johnson on 11 Jan suggests the line
loadusr emcrsh
was put at the end of my favorite hal file and then emc2 was started
with
/usr/bin/emc.
From another machine on the network I was able to telnet to the
running emc session via
emcrsh as the wiki suggests, but could not log in. The default
passwords EMC and EMCTOO resulted in
HELLO NAK and when I tried to apply new passwords to the loadusr
emcrsh line, as per the wiki, no joy.
I am getting a sensible reply to Help and lots of HELLO NAK's which is
hopeful. The command line in the wiki page on emcshrc says:
loadusr emcrsh {-- --port port number --name server name --connectpw
password --enablepw password --sessions max sessions -
iniinifile}
Are all those double dashes really used? Why does the last item only
use one dash? I assume those brackets { } are not used. Are quotes
needed around the passwords? I tried all possible permutations but
emcrsh just says NAK. Any hints would be greatly appreciated.
christopherpurc...@mac.com
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Re: [Emc-users] RES: Successful Emc2 conversion (happy dance...)
Hi Tom - can't you remove them with a full depth finishing cut? Distinct edges like that are stress magnets ;) Steve Blackmore Hi Steve, Those are tapered walls. The contours for those pockets are about 50 thou inset at the bottom of the pocket, so the walls are that much thicker down there. It might be worth investigating using a 3/8 endmill with a 1/16 radius end. That would give some gradation to each Z level step, plus the bottom cut would have the full radiused corners. What you need is a 5-axis mill :) (nice stuff, by the way) - Steve Aside from a 5 axis (drool..), would a tapered endmill (such as used for mold work) achieve the desired angle? Just spit-balling. Very nice work Tom - great to see stuff like this. I better not let my brother see those - he loves his motorcycles (as I once did, now I value my brain staying within my skull since a friend of mine broke his pelvis in 3 places and wore a 'hoop' for nearly a year). I saw the mention of EMC2 2.3...at the risk of getting the whole list drooling on keyboards and causing mass crashing of emc-users list member's computers, is 2.3 expected within the next ~3 months or so? Again - congrats and keep machine info coming! Greg www.distinctperspectives.com -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Successful Emc2 conversion (happy dance...)
On Thursday 15 January 2009, Tom wrote: Gene Heskett gene.hesk...@... writes: snip... But since I'm an old biker myself, I would never install a part like that on my bike, I have first hand seen the results of a broken one. At about 45mph. At first we thought he would be in a wheelchair the rest of his life, but he never made it from the bed to the wheelchair. That part needs more mass, lots more. Thanks for your concern Gene. I can see you are advocating for the good here, so I am inclined to listen carefully. I would like to offer a few more facts about the part: My customer's trike is a tried an proven design that has undergone iterative improvements for decades. Here is the website: http://www.lightningmotorcycles.com/specs2.html You can see a shot of the original tripleT here: http://www.lightningmotorcycles.com/specs2.html Both links point at the same page. :) This design is my remake of the original which consisted of a .75 thick flat plate 7075 without lightening pockets. The original design withstood a 35 mph head-on collision without cracking, even though the forks were bent back about 45 degrees. I know the guy who endured the crackup and he is just fine, and drives his replacement whenever he can. That 7075 (T?, 6 hopefully), solid, is probably ok, although I'd prefer to see it like I see it in the whole trike pix but out of 1 stock, and maybe even 7078T6, which is harder on tools but otherwise machines nice, or has for me when I can get my hands on it. It isn't something I can access on demand at the scrap yard here in West (By God) Virginia. The last big block they had I think was 6061 at best, pretty gummy stuff. I've been working on that 40 pound block off and on for several years now with my teeny tools. Now, I will grant you that shallow clamping area of the original design may have tolerated greater flex without causing metal fatigue in the part - and therefore the newer design may experience internal stresses that were never seen by the old design. In fact, I think this will be the case. I agree, it cannot help but be worse if the fork tubes flex. But I'm not sure I would condemn the thickness of this one just for that reason alone. Besides, they aren't supposed to flex, too easy to get a tank slapper when they do. Kawasaki's turned more than one good man into flag draped coffins with their small fork tubes and lighter triple clamps. I had one once, and another clamp sitting on top of the fender helped, but that KZ-750 still wanted to shake its head when leaned over smartly carving a slice of corner for my enjoyment. Between that, and it coming home in a pickup most of the time, costing me $200+ for the trannies countershaft and sprocket each time, plus the long tear-down to replace them, caused me to change the name on the title, so I put the next 50k miles on a Suzi, a GS-1000-G. :) So what would it take to make you willing to put such a part on your bike. Would you be willing to forgo the lightening pockets altogether? Well, as I went and got old (now 74) when I was having fun, I sold my last bike pushing a decade back when I realized my reflexes just weren't up to the steel shoe teflon kneecap pads crowd anymore. So, going back to http://www.foxpointdesign.com/cnc_stuff/ttclamp2-sm.jpg I think I'd ask to forgo the lightening cavities entirely. I assume those bolts are grade 12's, but with the lightening cavities gone, you would have room and mass left to screw them into heli-coils, which would bring the thread strength up to what the bolts can deliver when the proverbial 1/8 turn from broke torque is applied. A hardened steel washer under the bolt head would both make the torque easier to get, and help prevent the hole from collapsing onto the bolt should the bolts have to make several trips in and out during assembly. That would be similar to lubing the bolt (which I would anyway and reduce the torque accordingly if for no other reason that to have the hole full of grease to slow the corrosion,) and I'd reduce the terminal torque some percentage to keep it from going past the 'broke' part of that old saying when the steel washer is slicker than the ALU under the bolt head. :) Those are obviously very nice trikes, and this machining is impeccably done except for the mark per loop through that piece of code that made the cavities, but I have a one legged friend I don't dare forward that link to. He keeps himself somewhat beyond broke the way it is, and he would just have to buy it (gotta have one better than the Jones's up the street you know) and you might have to come and get it when he defaults. You would I think, enjoy the trip if you stop and smell the roses, but certainly not the cost of it. One now old farts opinion, based on 40+ years of riding, at as much as 37k miles a year. Rain, snow (18 inches of fresh powder one night when the fm transmitter went down) or shine. It ran as a chair
Re: [Emc-users] Mesa 5i23 and 7i37 I/O problem
SebFstian I put this in the hal file the only thing different is it now pulses the output when EMC starts up but I still can not control it. Right now I'm only looking at the brake output. I'm sure that once I get the brake working the other will be the same problem. # Connect spindle brake to I/O controller. newsig SpindleBrakeOn bit setp hm2_5i23.0.gpio.P3.042.is_output 1 linksp SpindleBrakeOn = hm2_5i23.0.gpio.P3.042.out linksp SpindleBrakeOn = motion.spindle-brake My Fluke 23 tells me all the inputs are pulled high. Grounding them make no difference on what the Halmeter is showing but my Fluke sure sees it. Donnie -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] RES: Successful Emc2 conversion (happy dance...)
On Thu, Jan 15, 2009 at 10:44:48PM -0500, Greg Michalski wrote: I saw the mention of EMC2 2.3...at the risk of getting the whole list drooling on keyboards and causing mass crashing of emc-users list member's computers, is 2.3 expected within the next ~3 months or so? I think this plan still looks reasonable: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Emc2.3Status There is SO much new stuff. We will need to do a lot of work testing/stabilizing it. I'm still working on the cutter comp. The changelog is a little out of date (last updated it in Nov), but most of the new stuff is listed there. http://cvs.linuxcnc.org/cvs/emc2/debian/changelog?rev=HEAD Chris -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] RES: Successful Emc2 conversion (happy dance...)
Tom wrote: Hi Steve, Those are tapered walls. The contours for those pockets are about 50 thou inset at the bottom of the pocket, so the walls are that much thicker down there. It might be worth investigating using a 3/8 endmill with a 1/16 radius end. That would give some gradation to each Z level step, plus the bottom cut would have the full radiused corners. You can get tapered endmills in a variety of shallow tapers. They are usually used for the draft in mold cavities, but can also be used for this purpose of tapered pockets. Jon -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] joint 1 on limit switch error
Hi: Does anyone know why I am getting this error ? Joint 1 on Limit Switch Error it is happening more and more often on my mill -- it is using the sherline driver box on a sherline mill. I have tried raising the ferror, the min_ferror, the base_period, the servo_period, the traj_period -- nothing helps I had limit switches but when I started getting this error I disabled them in the pinout.hal file Thanks in advance for any help, Mike _ -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] joint 1 on limit switch error
Mike the error is about a sensed input, not tuning, not thread timing, dont mess with your tuning parameters can you resurrect your original hal file to see if the error goes away? ( or mosty goes away, it sounds like the limit is still enforced and the switch has a bad connection) regards tomp ( 'it was the last thing you did' old serviceman's standby ) Mike Merrett wrote: Hi: Does anyone know why I am getting this error ? Joint 1 on Limit Switch Error it is happening more and more often on my mill -- it is using the sherline driver box on a sherline mill. I have tried raising the ferror, the min_ferror, the base_period, the servo_period, the traj_period -- nothing helps I had limit switches but when I started getting this error I disabled them in the pinout.hal file Thanks in advance for any help, Mike _ -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] joint 1 on limit switch error
On Friday 16 January 2009, Mike Merrett wrote: Hi: Does anyone know why I am getting this error ? Joint 1 on Limit Switch Error it is happening more and more often on my mill -- it is using the sherline driver box on a sherline mill. I have tried raising the ferror, the min_ferror, the base_period, the servo_period, the traj_period -- nothing helps I had limit switches but when I started getting this error I disabled them in the pinout.hal file That pretty much leaves noise pickup or ground loops. All grounds should be star topology and tied well to the 3rd pin of a power plug. Shielding on cables should be tied to ground at only one end else that can setup a ground loop. You may have to separate motor power wiring from the rest of it physically. In my case the motor cable is a shielded cable, with the shield grounded only at the xylotex driver end of the cable. An oscilloscope can be very educational if one knows how to read it. Thanks in advance for any help, Mike _ -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) I guess I've been wrong all my life, but so have billions of other people... Certainty is just an emotion. -- Hal Clement -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
