Messages

1

General Mach Discussion / Re: NFS turn metric values for x axis

« on: July 16, 2015, 04:22:18 PM »

Hello Rich,
I went back and did some standard thread and you were right the tread profile is wrong in both inch and thread now. I am doing something wrong with my machine. But the manufacturer can not help right now. So there seems to be an issue where the machine is clipping the thread, as in I think I might be loosing sync between the spindle and cnc drive. But the issue is I am not sure where to look in the mach3 setup to resolve it. I have turned on the turn diagnostic plug in and it is not reporting a lost index but not sure where else to look for settings that may fix this. Could use some help with mach3 config and threading. I am using only the nfs turn wizard right now.
Thanks

2

General Mach Discussion / Re: NFS turn metric values for x axis

« on: July 16, 2015, 01:33:48 PM »

If there is a flaw in the basic diameter I would love to hear what should use, I am very new to threading on Cnc and even more so to metric. Once I cut the thread, I measure with a thread and standard micrometer and both the major and minor are coming out different than I want and either the nut threads and is loose or it will not start at all. I keep tweaking the x end and start to try to hit what is needed. If you could point me to an online resource that would be great as I have tried so many and have yet to have one break it down simple enough to get what I need. I have cut standard threads on a manual lathe but never metric so I am missing something basic. One resource said to use major diameter and pitch diameter but that will not allow to thread, another use major and minor like standard thread but then that is too loose, too much material is being removed from major diameter.
Thanks for the help

3

General Mach Discussion / Re: NFS turn metric values for x axis

« on: July 16, 2015, 11:45:58 AM »

Hello,
My unit is configured for inch, so in order to cut metric I am converting all values to place in nfs turn to inch and tpi. As was mentioned to me when I asked a question here some time back. I have the axis positions all calibrated. When I say too big or small, it is because when I take the values out of the machinist handbook, I am not sure which to use when plugging in the wizard, because what I thought should work is not,, not a matter of machine accuracy just what values do I use as standard threads using your provided thread table work fine with a minor tweak if needed and with the handbook metric values I convert all the table values to inch and adjust for turning mode. It is a matter of I have never cut metric and was looking to see what plugs in the wizard.
Thank you

4

General Mach Discussion / NFS turn metric values for x axis

« on: July 16, 2015, 04:08:16 AM »

Hello,
Ok, call me an idiot but I am having issues setting up values for metric threading in nfs turn wizard, my big problem is understanding what to use in the x start and x end fields, because if I follow the machinest handbook on what I thought to use I end up with something less than usable for an external thread. I am trying to make a 8mm 1.25 pitch thread using the wizard, starting with an 8mm rod and I convert all my values to inch and tpi of which is 20.32 and I get the proper pitch measured by thread gauge just not the right diameter for test fit. I am either too large or too small by just enough to not be usable, in the ballpark. I am using diameter mode.
Any help would be great

5

Newfangled Solutions Mach3 Wizards / Re: Mach3 Turn wizard metric threading

« on: March 04, 2015, 09:02:26 PM »

Thank you for the help everyone. Got it now.

6

Newfangled Solutions Mach3 Wizards / Re: Mach3 Turn wizard metric threading

« on: February 20, 2015, 07:29:48 PM »

Hello,
Sorry for being slow but then does that mean for example I need a 14mm 2.0 pitch so then I should convert that to tpi as well or can I just put 2.0 as the pitch along with the converted inch units, or do I need to convert the pitch as well to TPI?
Thank you for the help, sorry for being slow I had just not done it via the wizard before, well for that mater at all via CNC yet. Done a lot else just not threading yet.

7

Newfangled Solutions Mach3 Wizards / Mach3 Turn wizard metric threading

« on: February 20, 2015, 03:53:59 PM »

Hello,
I am just checking to see how the treading wizard works. I need to do some metric threads, do I input the values in the wizard and threads.txt in inches (converting the metric value by dividing 25.4) and just specify the pitch I want with no TPI specified? I ask because all values in the threads.txt are in inches. My machine mach3 setup is all in inches but I have a few times when I need to cut a metric external thread and would use the wizard to do them since they are easy.
Thank you