Re: [Emc-users] Draftsight for Linux
2011/3/14 Stephen Wille Padnos spad...@sover.net: Viesturs Lācis wrote: Wow, that is great news! I think that first few precedents are the hardest part here - we should see even more apps on Linux once the ice has started to move. Unfortunately I am afraid that SolidWorks licence will not be cheaper for Linux users and still will be in +10K range. Please correct me, if I am wrong with the numbers here. BTW does anybody know, if SolidWorks has a licence for students? And what is approximate amount payable for that? Yes they do. It looks like it's $150 for a 12-month license. They do mention that the student version is unsuitable for commercial use, but I don't know what that means. They say it's fully functional, so maybe it watermarks files or something ... Information is from this page: http://www.solidworks.com/sw/education/student-software-3d-mcad.htm (the pricing is available if you click the buy student edition button) Great, thanks! Viesturs -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] new software
Hi I found very interesting software http://www.intact-solutions.com/technology.php It is about Finite elements that can be very important when design large tool, fixture and teen wall part. To manufacture -cut very complex and big part it is not enough to have good CAD/CAM and good CNC machine. aram -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] CAM-related question
On Sat, Mar 12, 2011 at 4:30 PM, Viesturs Lācis viesturs.la...@gmail.comwrote: Hello, gentlemen! I would like to ask, if anyone has an idea, how to create a code to produce this kind of part (both files contain the same model, I just saved it in 2 different formats): http://www.cutting.lv/fileadmin/user_upload/Test.IGS http://www.cutting.lv/fileadmin/user_upload/Test.STL My goal would be cutting this part from thick slab of material. Those flat planes represent top and bottom surfaces of the slab. Basically I would like to get code, in which the waterjet (or any 5 axis plasma or cuts a circle on the top, but rotary joints that tilt the head would move so that something like a square is on the bottom. So the problem is finding out the necessary tilt angle, which corresponds to the slope of the edge. I thought that it could be something like dividing the top contour (in this case - the circle) in 0.1 mm segments and then getting the slope angle, but I have no idea, how to do that. Can anyone recommend some kind of solution? Is there some _affordable_ CAM application that can do that (I have found one that costs 12K EUR, but I do not even consider that to be an option)? Or can I calculate that myself with some trigonometry? Since I know the distance from one plane to another (that is the thickness of material), I would need only horizontal distance from one line to another to get the angle with atan function. The distance between both lines could be calculated in 0,1 - 0,2 mm increments. That would not affect the quality of the result and probably would not create insanely long code for such a small part. I would appreciate any ideas on this matter. I think that any solution that works will do! Thanks, Viesturs -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users You want to calculate the length of the circumference of the top and bottom shapes. Divide each length by the same number (determined by the desired smoothness of the resulting cut). Match/map the points ie. start at zero (3 oclock) with the square shape in a diamond orientation - (one of the corners at 3 oclock) the first point top and bottom is at 3 oclock assume you want 100 discrete cuts around the part the second point is now 1/100 the distance from 3 oclock for both the top and bottom shapes repeat until you reach the second corner of the square shape (or until you reach three oclock again) The resulting points (using the thickness of the part to determine the distance between the points) will give you the 5 axis vector for your tool. A smoother part will need more discrete points. -- dos centavos -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
On Mon, 2011-03-14 at 11:00 +, andy pugh wrote: which caused some worrying sizzling noises. Obviously, your radio isn't turned up nearly loud enough... (Which helps with car repairs, too.) -- Ed http://softsolder.com -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
On 14 March 2011 15:30, gene heskett ghesk...@wdtv.com wrote: If I read it right, it is being said that perhaps a capacitor of the correct value to create a usable phase lead, from L1 or L2 to L3, will start a 3 phase motor on single phase power, direction of the rotation dependent on which 2 the capacitor is connected to. Yes, in fact this is how my coolant pump is wired. You don't get the same power output, and the motor needs to have an external star point so that it can be wired for the lower voltage, but it works fine. In fact, many of the cheaper single phase motors are exactly that, a three-phase motor and permanently connected capacitor, with no centrifugal switch. I don't know if it is still the case, but the single-phase motor we bought from Machine Mart was exactly this, and had far too little starting torque for the vehicle lift we wanted to run. http://www.machinemart.co.uk/shop/range/details/230v-110v-single-phase-motors/path/single-phase-electric-motors -- atp Torque wrenches are for the obedience of fools and the guidance of wise men -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
On Mon, 2011-03-14 at 15:41 +, andy pugh wrote: On 14 March 2011 15:30, gene heskett ghesk...@wdtv.com wrote: If I read it right, it is being said that perhaps a capacitor of the correct value to create a usable phase lead, from L1 or L2 to L3, will start a 3 phase motor on single phase power, direction of the rotation dependent on which 2 the capacitor is connected to. Yes, in fact this is how my coolant pump is wired. You don't get the same power output, and the motor needs to have an external star point so that it can be wired for the lower voltage, but it works fine. In fact, many of the cheaper single phase motors are exactly that, a three-phase motor and permanently connected capacitor, with no centrifugal switch. I don't know if it is still the case, but the single-phase motor we bought from Machine Mart was exactly this, and had far too little starting torque for the vehicle lift we wanted to run. http://www.machinemart.co.uk/shop/range/details/230v-110v-single-phase-motors/path/single-phase-electric-motors My home built 5 Hp converter uses a ~240 uF starting cap and much less than that on the legs. If you really want it right you adjust the caps to get the voltage on the third leg correct. Pretty easy even without the mathematical analysis. Some things can be done just by trial and error; usually more error than trial. ;-) Copying someone else's example helps a lot, at least to get started. Dave -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] DEBUG, rtapi_print_msg, dmesg
Hi, I can not get mesages on dmesg using rtapi_print_msg(RTAPI_MSG_WARN... rtapi_print_msg(RTAPI_MSG_INFO... only rtapi_print_msg(RTAPI_MSG_ERR... I've changed the debug level from 0 to 0x7FFF as indicated in emcglb.h. The verbosity of the output increases, but the messages I' intending to get making use of the rtapi_print_msg still keep not appearing on the output of dmesg How can I get the output?, on dmesg or elsewhere (I'm working on a realtime component). I'm using a recent (2-3 months old ). In the past I used to use this method to get output in dmesg without problems. Thank you, Javier -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Icon for pyVCP
On 03/14/2011 12:20 PM, Kirk Wallace wrote: On Mon, 2011-03-14 at 05:37 -0400, Mark Wendt wrote: ... snip Are you already starting it from a launcher on the desktop? ... snip Yes, I tried that a couple of times, but mostly I have been trying to get back to the terminal from the halcmd: prompt, which needs to happen first. Kirk, Can you post your startup script? Mark -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
Gentlemen, using a phase pusher capacitor is a cheap and common workaround when a three phase supply isn't available. I have used this with a lathe for some time, since a machine like this doesn't need its full power most of the time and it always starts idling without load. Ordinary three phase current runs 120 + 120 + 120 degrees to make a full revolution. If you have only two, this makes it 180 + 180 and won't run because there is no direction information in it. A capacitor connected to one leg of the two-phase system produces a 90 degree phase shift relative to this lead. Using this as a mock three phase system, you will have 180 + 90 +90 degrees for a revolution including a direction information, depending to which leg you connected the capacitor. The distribution is uneven which is the reason for reduced power, but better than nothing. Don't confuse this with a starter capacitor used to supply a direction information to a generic two phase motor! Those are for short time use with small motors only and blow their tops when used continously (because of faulty starter relay or so). Of course, the size of the capacitor depends on the amount of current it has to supply to the third leg. Having learned from practice, I used at least 70 microfarads per kW to achieve about half the power the motor can deliver on a real three phase system. More capacity doesn't contribute much. The capacitors need to have a voltage rating of mains voltage times sqrt of 2. The cheapest way to get them ( I was a student then) was cannibalizing the current compensation capacitors from old flourescent lamps at the junk yard. I needed about a dozen of them, but at zero expense. Watch for belly shaped tops, there is plenty of stinking smoke compressed by the factory in these aluminum cans! Perter Blodow andy pugh schrieb: On 14 March 2011 15:30, gene heskett ghesk...@wdtv.com wrote: If I read it right, it is being said that perhaps a capacitor of the correct value to create a usable phase lead, from L1 or L2 to L3, will start a 3 phase motor on single phase power, direction of the rotation dependent on which 2 the capacitor is connected to. Yes, in fact this is how my coolant pump is wired. You don't get the same power output, and the motor needs to have an external star point so that it can be wired for the lower voltage, but it works fine. In fact, many of the cheaper single phase motors are exactly that, a three-phase motor and permanently connected capacitor, with no centrifugal switch. I don't know if it is still the case, but the single-phase motor we bought from Machine Mart was exactly this, and had far too little starting torque for the vehicle lift we wanted to run. http://www.machinemart.co.uk/shop/range/details/230v-110v-single-phase-motors/path/single-phase-electric-motors -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How to access the SERVO_PERIOD from a component?
On 14 March 2011 17:56, jros j...@unavarra.es wrote: I'm doing a component derivated from motenc that simulates a virtual machine. It would be nice If I could get the value of the SERVO PERIOD, If you are using comp, then you can use the variable fperiod. (which is the period in seconds in floating point format) -- atp Torque wrenches are for the obedience of fools and the guidance of wise men -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How to access the SERVO_PERIOD from a component?
On Mon, 2011-03-14 at 18:56 +0100, jros wrote: Hi, I'm doing a component derivated from motenc that simulates a virtual machine. It would be nice If I could get the value of the SERVO PERIOD, As I need it to make the integral of the state. Thanks in advance, Javier I think SERVO PERIOD is in the Linux environment as well as many other .ini file variables. Try 'env' to see all of the environment variables. For a particular variable use 'echo $variable' such as 'echo $PATH'. I haven't checked this out and is mostly a guess. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
On Mon, 2011-03-14 at 17:58 +0100, Peter Blodow wrote: ... snip A capacitor connected to one leg of the two-phase system produces a 90 degree phase shift relative to this lead. Using this as a mock three phase system, you will have 180 + 90 +90 degrees for a revolution including a direction information, depending to which leg you connected the capacitor. The distribution is uneven which is the reason for reduced power, but better than nothing. Don't confuse this with a starter capacitor used to supply a direction information to a generic two phase motor! Those are for short time use with small motors only and blow their tops when used continously (because of faulty starter relay or so). In case my attachment doesn't go through, here is my graphical study of a rotary three phase converter: http://www.wallacecompany.com/machine_shop/EMC2/three_phase_converter-1a.png The 180 degree voltage phase shift is only an issue if neutral is used, but it is not. I think the decrease in efficiency is due to using one phase to try to generate two more and the currents are much higher than normal. (Viva VFD's) -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
On 14 March 2011 19:42, Kirk Wallace kwall...@wallacecompany.com wrote: In case my attachment doesn't go through, here is my graphical study of a rotary three phase converter: http://www.wallacecompany.com/machine_shop/EMC2/three_phase_converter-1a.png You have 2-phase power? In the UK we get one phase and line neutral. (Not that that actually matters at all) -- atp Torque wrenches are for the obedience of fools and the guidance of wise men -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
Kirk, I believe that now you got everything completely right. i On Mon, Mar 14, 2011 at 2:42 PM, Kirk Wallace kwall...@wallacecompany.comwrote: On Mon, 2011-03-14 at 17:58 +0100, Peter Blodow wrote: ... snip A capacitor connected to one leg of the two-phase system produces a 90 degree phase shift relative to this lead. Using this as a mock three phase system, you will have 180 + 90 +90 degrees for a revolution including a direction information, depending to which leg you connected the capacitor. The distribution is uneven which is the reason for reduced power, but better than nothing. Don't confuse this with a starter capacitor used to supply a direction information to a generic two phase motor! Those are for short time use with small motors only and blow their tops when used continously (because of faulty starter relay or so). In case my attachment doesn't go through, here is my graphical study of a rotary three phase converter: http://www.wallacecompany.com/machine_shop/EMC2/three_phase_converter-1a.png The 180 degree voltage phase shift is only an issue if neutral is used, but it is not. I think the decrease in efficiency is due to using one phase to try to generate two more and the currents are much higher than normal. (Viva VFD's) -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
On Mon, 2011-03-14 at 14:54 -0500, Igor Chudov wrote: Kirk, I believe that now you got everything completely right. i Thank you. This is why I value when people let me know when I may be wrong. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How to access the SERVO_PERIOD from a component?
On Mon, 2011-03-14 at 12:22 -0700, Kirk Wallace wrote: ... snip I think SERVO PERIOD is in the Linux environment as well as many other .ini file variables. Try 'env' to see all of the environment variables. For a particular variable use 'echo $variable' such as 'echo $PATH'. I haven't checked this out and is mostly a guess. Oops. I'm wrong, never mind. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
Hello Andy, it's just the same here, if you separate the usual three phase supply into three separate 230 V-systems, each defined to ground. I was talking about a, say, small household, where only one of these phases is available. Other households in the same building may have others of the three phases. We used to call them R, S and T. Lacking the other p´hases, you can make a third phase for your household by means of a phase shifting capacitor and make a mock three phase system with reduced power beause of the unsymmetry. Don't care about the neutral line being grounded. Peter Blodow andy pugh schrieb: On 14 March 2011 19:42, Kirk Wallace kwall...@wallacecompany.com wrote: In case my attachment doesn't go through, here is my graphical study of a rotary three phase converter: http://www.wallacecompany.com/machine_shop/EMC2/three_phase_converter-1a.png You have 2-phase power? In the UK we get one phase and line neutral. (Not that that actually matters at all) -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
Kirk Wallace schrieb: On Mon, 2011-03-14 at 22:55 +0100, Peter Blodow wrote: Kirk, Neutral is not to be considered. You have two wires coming from the supplier. Adding a capacitor makes three of them. The two mains lines are 180 degrees apart by definition. The capacitor makes a third phase 90 degrees between them. Connect your motor, and it will be running, regardless of which line is grounded. Peter Blodow Sort of. Your description above I believe matches my diagram showing the starting mode, or the middle picture: http://www.wallacecompany.com/machine_shop/EMC2/three_phase_converter-1a.png In my original argument, I stated I thought L1 and L2 from the mains are 180 degrees apart, because if you scope L1, you get a sine wave. If you scope L2, you get a sine wave that is shifted 180 degrees from the L1 sine wave. The problem is that the scope uses ground or neutral as the reference for the L1 and L2 voltage. but the neutral is not used in the circuit so the 180 degrees doesn't apply or add to the understanding of how the circuit works. The only thing we know is that there is a single 240 Volt sine wave when L1 is referenced to L2 or vis versa and this single wave is connected across a single phase on the converter motor. Once I drew this single phase wave on the A and B converter motor terminals, everything else flowed from that. The only time 180 degrees came to mind from developing this diagram was in considering the unconnected C terminal relative to A and B. C looks like a transformer center tap relative to A and B, so there should be a sine wave between L1 (A) and and C that is 180 degrees from L2 (B) and C. To me so far, this doesn't add anything to the understanding of the converter. You are considering a two phase system whichis actually a one phase system of, say, 230 volts per phase. In this case, everything is symmetrical, and each wire is 180 degrees apart form the other, regardless of which is grounded. One one them is defined as zero volts, so the other one will be 230 volts (therefore one phase). In a three phase system, three leads are carrying 230 volts per phase also, but considering the delta shape of the connection, beween them there will be a voltage of 230 volts times sqrt of three, approx. 400 volts. Imagine the whole thing as a regular triangle with three equal sides and the center grounded, it is easy to see that you can make three single 230 volts AC circuits referenced to ground or neutral (which will not be delivered by the power supplier in every instance, but defined locally by grounding the center tap of the power line transformer station). This is the basic great idea of three phase supply - transport 75% more energy by use of 50 % more wires, not counting the advantage of a direction of rotation information. In summary, with a usual 230/400 volts three phase system, you can split this into three single phase, 230 volts systems (L1, L2, L3 or R, S, T) referenced to ground (N) or use it as a 400 volts rotary system for motion devices, regardless of ground. In case of unavailability of the two other phases, use a phase shift capacitor to create your own 230 volts rotary system (with power drawbacks), wire your motor in delta 230 volts and run your machines as good as they will run! Peter Blodow My converter does have a pair of running capacitors and sometime I may try to apply the start capacitor logic to these to try to figure out how they work. My guess is that they store energy during the motor period and release it during the generating period of each shaft rotation, but I can't prove it, yet. -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] higher speed spindle
Hi everybody; I did some back of the napkin measuring this evening, with an eye toward building a vice for wood to hang down over the left front edge of the table of my micro mill, then either strip an old wallered out bearings BD router, the crap they sold 20 years ago for $29.95, replace its bearings after pushing the shaft out of the armature leaving me with a shaft the bit collet (1/4 only, thats fine), which I would then bore a piece of water pipe for the fresh bearings. Attach that with some u-bolts to an alu plate bolted to the front face of the mills head casting so that this spindle is offset to the left about 7 or 8, and forward about 3. I have the alu, so a 3/4 thick plate is not out of the question. Drive, I am thinking could be some sort of a belt with about a 4 pulley on a shaft inserted into a 1/2 collet in the existing spindle, to about a 1.25 pulley on the BD spindle shaft right above the collet. Leaning toward a 1/4 o-ring type of belt. Run time at any one time probably under 3 minutes so heat shouldn't be a huge problem. Pulleys such I can make. This would be used to carve a tenon on the end of a stick of harder wood, something I don't have the precision to do accurately enough on my cheap table saw with a tenon sled straddling the fence, mainly because I have no way to advance the fence by .002 for the final, fits exactly cut. Nor can I cut the rounded corners on the table saw, plus the blade height wiggles or vibrates down about .0005 every time I hit the start switch, so even with an ATB+F blade, clean tenon shoulders just aren't possible. Has anybody ever done something similar, and can offer me some hints, like where to buy a _decent_ set of bearings to replace those busted skate wheel bearings BD used. Without paying $30/copy? -- 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) http://tinyurl.com/ddg5bz http://www.cantrip.org/gatto.html No matter how cynical you get, it's impossible to keep up. -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Can G code subs RECURSIVELY call themselves?
I am thinking about making a turner's cube on a mill. It is an easy task, but for elegance, I would really like to write a turner's cube subroutine that would call itself recursively. Omysub sub ... ... ... Oif if [something] Omysub call [...] Oif endif ... Omysub endsub Can I do that? -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Single to Three Phase Rotary Converters
On 14 March 2011 10:50, John Thorntonbjt...@gmail.com wrote: Is it not amazing that the hillbillies from backwoods Missouri with a 3rd grade education can make a rotary phase converter without all the math... Of course! The trick is the windings in the motor do all the math for you, all you need to do is hook up the wires. Jon -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] higher speed spindle
On Tuesday, March 15, 2011 12:02:14 AM Edward Bernard did opine: Gene- Take a look at the spindle Paul Jones makes: http://www.angelfire.com/az2/proff/index.html. I think that's what you had in mind, yes? VXB has cheap bearings: http://www.vxb.com/. Have fun! -Greg Already did Edward, and came to the conclusion it would be nive for engraving and pcb work, but not capable to accepting and holding a 1/4 upcut spiral 2 flute router bit while marching around the pattern, shaving 5 to 10 thou off the side of the stick to make a tenon on the end of it an inch long. This is going to take something more like a regular trim router if I can mount it correctly. I knocked that elderly BD apart tonight, far enough to see that it only needs the bearing on the chuck end of the shaft, but the collet is really a trashy collet, so if I follow that idea, I may as well start by making my own shaft to take a decent MT2 collet as I have those. Which may be quicker to call Chris at LMS and just have him send me the whole assembly from a micromill. I wonder how fast one can spin those bearings? Pricing that out comes pretty precious though. :( And its top driven, not what I had in mind at all. Maybe the BD armature is the cheapest way to get .005 accuracy, in which case I have a newer one that may be better, I had a heck of a time tonight getting the front bearing retainer nut off the older one, the chuck wrench had burred up the threads some, and that steel is surprisingly hard. Or just go get a trim router make the mount for it. Quicker, thats for sure, but I didn't want to carry that much extra weight. HF also has a die grinder that might work too. I'll go look again. I have not identified the bearing yet, still stuck in the plastic end cap my snap ring pliers I still need to find. The darned thing is rusty! And I have a sneaking suspicion the bearing back on the brush end of it is a torrington needle cageless as the front bearing obviously does all the end play control. -- 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) http://tinyurl.com/ddg5bz http://www.cantrip.org/gatto.html You won't skid if you stay in a rut. -- Frank Hubbard -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Can G code subs RECURSIVELY call themselves?
Hi Igor, Good to write to you. I have been following your BP2 project with great interest. From the docs, EMC2 User Manual v2.4, Chapter 17.1, page 121: [Subroutines] may be called from other functions, and may call themselves recursively if it makes sense to do so. The maximum subroutine nesting level is 10. Kim On 03/14/2011 09:47 PM, Igor Chudov wrote: I am thinking about making a turner's cube on a mill. It is an easy task, but for elegance, I would really like to write a turner's cube subroutine that would call itself recursively. Omysub sub ... ... ... Oif if [something] Omysub call [...] Oif endif ... Omysub endsub Can I do that? -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Can G code subs RECURSIVELY call themselves?
Thank you on both counts! Here's my sub to make a turner's cube: (Makes a turner's cube. See projects.txt for formulas). Oturners_cube sub #xc= #1 (X Center) #yc= #2 (Y Center) #z = #3 (Current Z) #size = #4 (Side) #milld = #5 (Mill Diameter) #k1= #6 #k2= #7 #R = [#k1 * #size/2] Oif if [ #R gt #milld] G0 X#xc Y#yc Owithdraw call [#z + 0.01] #d = [ [#x/2 - #R] + #k2*#R*[1 - 1/sqrt[ 2 ]]] Odeepcylindricalpocket call [#xc] [#yc] [#z + 0.01] [#z - #d] [#R] [#milld] #X1 = [#size - 2*#d] Oturners_cube call [#xc] [#yc] [#z - #d] [#X1] [#milld] [#k1] [#k2] Oif endif G0 X#xc Y#yc Owithdraw call [#z + 0.01] Oturners_cube endsub M2 i On Mon, Mar 14, 2011 at 11:34 PM, Kim Kirwan k...@kimkirwan.com wrote: Hi Igor, Good to write to you. I have been following your BP2 project with great interest. From the docs, EMC2 User Manual v2.4, Chapter 17.1, page 121: [Subroutines] may be called from other functions, and may call themselves recursively if it makes sense to do so. The maximum subroutine nesting level is 10. Kim On 03/14/2011 09:47 PM, Igor Chudov wrote: I am thinking about making a turner's cube on a mill. It is an easy task, but for elegance, I would really like to write a turner's cube subroutine that would call itself recursively. Omysub sub ... ... ... Oif if [something] Omysub call [...] Oif endif ... Omysub endsub Can I do that? -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
