Re: [Emc-users] EMC2 Lathe - single point threading trapezoidal threadform
On 18 August 2010 00:30, Tom Smith tomsmith...@hotmail.com wrote: Is there any way to true single-point thread trap threadforms? I would expect so. I have cut coarse (4mm pitch) threads using a broadly similar approach and G76. The threading cycle starts from the initial position, so you can gut a thread normally, then move the Z and / or X little, cut another thread and incrementally cut the thread. My 4mm pitch thread was done as a multi-pass cut of 1/4 the depth, then back off 1mm and another threading cycle to half depth, back off another 1mm and thread to 3/4 depth and then back off the final 1mm and a final full cycle to full depth (all with a 30 degree compound angle. The effect of this was that the cut was never more than about 1mm wide (with a light skim on the other thread flank) (I didn't think of this solution myself, it was a suggestion from Chris Radek) -- atp -- This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] EMC2 Lathe - single point threading trapezoidal threadform
Hi all, Soon I'll need to cut some trapezoidal threadforms on my lathe. Up to now I've only ever (manually) single-point threaded with full-form tools. Doing the same is possible for trapezoidal threads, but prone to chatter on smaller threads, especially internal. Is there any way to true single-point thread trap threadforms? I mean grind a 30deg tool with no flat nose. The procedure would be:1) advance along thread flank to full depth (as normal)2) traverse along Z at full depth to produce the flat thread bottom3) withdraw Is it possible to do this with G33?As you can probably tell I'm new to CNC lathes. Thanks,Tom -- This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC2 Lathe - single point threading trapezoidal threadform
I would think it is possible. I have done threading like that on a CNC lathe before. Program a single pass thread cycle. For every pass move the start point along the profile of the thread shape you need to cut. If EMC2 threads like a Mazak Quick Turn 10 then you will cut the thread shape you want. On Tue, Aug 17, 2010 at 6:30 PM, Tom Smith tomsmith...@hotmail.com wrote: Hi all, Soon I'll need to cut some trapezoidal threadforms on my lathe. Up to now I've only ever (manually) single-point threaded with full-form tools. Doing the same is possible for trapezoidal threads, but prone to chatter on smaller threads, especially internal. Is there any way to true single-point thread trap threadforms? I mean grind a 30deg tool with no flat nose. The procedure would be:1) advance along thread flank to full depth (as normal)2) traverse along Z at full depth to produce the flat thread bottom3) withdraw Is it possible to do this with G33?As you can probably tell I'm new to CNC lathes. Thanks,Tom -- This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- dos centavos -- This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC2 Lathe
Is your spindle on your left hand side when you're standing next to the machine? to my knowledge that's how all lathes are usually set up, with headstock on left and tailstock on right. On Sat, Jan 31, 2009 at 12:30 AM, Len Shelton l...@probotix.com wrote: I'm pretty sure you will find it the other way around- X is the cross slide, Z longitudinal Cool - that clears up a lot. Now how can I rotate the Axis display and keys to match how I stand next to the machine? Len -- 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 -- Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC2 Lathe
Len Shelton wrote: I'm pretty sure you will find it the other way around- X is the cross slide, Z longitudinal Cool - that clears up a lot. Now how can I rotate the Axis display and keys to match how I stand next to the machine? Len I am working on a lathe right now. Here is my .ini file: # Generated by stepconf at Thu Jan 15 19:14:21 2009 # If you make changes to this file, they will be # overwritten when you run stepconf again [EMC] MACHINE = schaublin NML_FILE = emc.nml DEBUG = 0 [DISPLAY] DISPLAY = axis EDITOR = gedit POSITION_OFFSET = RELATIVE POSITION_FEEDBACK = ACTUAL MAX_FEED_OVERRIDE = 1.2 INTRO_GRAPHIC = emc2.gif INTRO_TIME = 1 PROGRAM_PREFIX = /home/rollak/emc2/nc_files INCREMENTS = 5mm 1mm .5mm .1mm .05mm .01mm .005mm PYVCP = panel.xml LATHE = 1 [TASK] TASK = milltask CYCLE_TIME = 0.010 [RS274NGC] PARAMETER_FILE = emc.var [EMCMOT] EMCMOT = motmod SHMEM_KEY = 111 COMM_TIMEOUT = 1.0 COMM_WAIT = 0.010 BASE_PERIOD = 10 SERVO_PERIOD = 100 [HAL] HALFILE = schaublin.hal POSTGUI_HALFILE = postgui.hal [TRAJ] AXES = 3 COORDINATES = X Z LINEAR_UNITS = mm ANGULAR_UNITS = degree CYCLE_TIME = 0.010 DEFAULT_VELOCITY = 10.00 MAX_LINEAR_VELOCITY = 50.00 [EMCIO] EMCIO = io CYCLE_TIME = 0.100 TOOL_TABLE = tool.tbl [AXIS_0] TYPE = LINEAR HOME = 0.0 MAX_VELOCITY = 50.0 MAX_ACCELERATION = 300.0 STEPGEN_MAXACCEL = 0.0 SCALE = 400.0 FERROR = 0 MIN_FERROR = 1.0 MIN_LIMIT = -360.0 MAX_LIMIT = 0.0 HOME_OFFSET = 0.0 HOME_SEARCH_VEL = 10.0 HOME_LATCH_VEL = -0.20 HOME_IGNORE_LIMITS = YES HOME_SEQUENCE = 0 [AXIS_2] TYPE = LINEAR HOME = 0.0 MAX_VELOCITY = 50.0 MAX_ACCELERATION = 300.0 STEPGEN_MAXACCEL = 0.0 SCALE = 200.0 FERROR = 0 MIN_FERROR = 1.0 MIN_LIMIT = -400.0 MAX_LIMIT = 0.0 HOME_OFFSET = 0.0 HOME_SEARCH_VEL = 20.0 HOME_LATCH_VEL = -1.0 HOME_IGNORE_LIMITS = YES HOME_SEQUENCE = 0 The arrow keys on the keyboard work like expected when I stand in front of the machine. Thomas -- 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] EMC2 Lathe
I have been busy here, getting all of our machines to work under EMC2. Thanks for all the hard work you guys have done to make my job easier. So, another one of my projects has been to CNC our C6 Lathe. All of the ballscrews, brackets, and motors are in place and I am just now driving it around trying to get a feel for CNC on a lathe. My first observation is that, on a mill, you try to visualize the movement on the spindle, but on the lathe - it seems more appropriate to visualize the movement of the cutting tool, which is similar to the mill - but it is not the spindle. However, Axis has the display rotated (by how I am thinking and looking at my machine) by +90 degrees. And then the jog keys on my keyboard are not what I expect. Can someone either enlighten me on how to think about the machine movement on a lathe, or help me to swap the Axis display and the keyboard jog keys? As I understand it the X is the long axis, and Z is the cross slide. Thanks, Len Len Shelton www.probotix.com Do not try to bend the spoon, that is impossible. Only try to realize the truth... ...that there is no spoon. -- 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] EMC2 Lathe
Len Shelton wrote: Can someone either enlighten me on how to think about the machine movement on a lathe, or help me to swap the Axis display and the keyboard jog keys? As I understand it the X is the long axis, and Z is the cross slide. Axis has a lathe mode that does what you want. Look in the ini file for the sim/lathe sample to find the incantation that turns it on. Regards, John Kasunich -- 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] EMC2 Lathe
Can someone either enlighten me on how to think about the machine movement on a lathe, or help me to swap the Axis display and the keyboard jog keys? As I understand it the X is the long axis, and Z is the cross slide. I'm pretty sure you will find it the other way around- X is the cross slide, Z longitudinal . Chris M _ Twice the fun—Share photos while you chat with Windows Live Messenger. http://www.microsoft.com/windows/windowslive/messenger.aspx -- 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] EMC2 Lathe
I'm pretty sure you will find it the other way around- X is the cross slide, Z longitudinal Cool - that clears up a lot. Now how can I rotate the Axis display and keys to match how I stand next to the machine? Len -- 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
