Re: [Emc-users] G76 docs need a better explanation

2014-05-22 Thread Steve Blackmore
On Wed, 21 May 2014 08:31:19 -0400, you wrote: Since lcnc has no clue about the ballistics of the reverse, and therefore cannot predict the over travel, I'm not sure there can be a fix for that other than setting the -limit well into the chuck. My neg working units limit is often well into

Re: [Emc-users] G76 docs need a better explanation

2014-05-22 Thread Gene Heskett
On Thursday 22 May 2014 03:25:24 Steve Blackmore did opine And Gene did reply: On Wed, 21 May 2014 08:31:19 -0400, you wrote: Since lcnc has no clue about the ballistics of the reverse, and therefore cannot predict the over travel, I'm not sure there can be a fix for that other than setting

Re: [Emc-users] G76 docs need a better explanation

2014-05-22 Thread Steve Blackmore
On Thu, 22 May 2014 08:20:45 -0400, you wrote: However - I don't use home in LinuxCNC, it's not lathe friendly - I don't find it all that helpful for other than reestablishing positions after a forced shut down in the middle of a job, chip broke, whatever. I don't even find that much use -

Re: [Emc-users] G76 docs need a better explanation

2014-05-22 Thread Gregg Eshelman
On 5/22/2014 6:20 AM, Gene Heskett wrote: Cutting off is a PIMA on this piece of rubber, and I finally wrote a routine that will work for one cutoff per cutoff blade sharpening. It goes inward about .2mm then pulls back before it can dig in and lock things up, then moves .5mm sideways and

Re: [Emc-users] G76 docs need a better explanation

2014-05-22 Thread Gene Heskett
On Thursday 22 May 2014 19:14:52 Gregg Eshelman did opine And Gene did reply: On 5/22/2014 6:20 AM, Gene Heskett wrote: Cutting off is a PIMA on this piece of rubber, and I finally wrote a routine that will work for one cutoff per cutoff blade sharpening. It goes inward about .2mm then

Re: [Emc-users] G76 docs need a better explanation

2014-05-21 Thread Kirk Wallace
On 05/20/2014 08:39 PM, Gene Heskett wrote: Greetings docs maintainers; I found this after noon that there is a large interaction between the driveline value, and the J and K values. My understanding from studying the G76 source is that the J value is intended to be depth of cut for the

Re: [Emc-users] G76 docs need a better explanation

2014-05-21 Thread Steve Blackmore
On Tue, 20 May 2014 23:39:28 -0400, you wrote: Greetings docs maintainers; I expect those interactions were expected to be self-evident by the guru's, but from the docs, its not all that well explained. Hi Gene - I've never used the G76 in Linuxcnc but it certainly looks different to the Mach

Re: [Emc-users] G76 docs need a better explanation

2014-05-21 Thread Gene Heskett
On Wednesday 21 May 2014 01:59:34 Kirk Wallace did opine And Gene did reply: On 05/20/2014 08:39 PM, Gene Heskett wrote: Greetings docs maintainers; I found this after noon that there is a large interaction between the driveline value, and the J and K values. My understanding from

Re: [Emc-users] G76 docs need a better explanation

2014-05-21 Thread Gene Heskett
On Wednesday 21 May 2014 03:13:10 Steve Blackmore did opine And Gene did reply: On Tue, 20 May 2014 23:39:28 -0400, you wrote: Greetings docs maintainers; I expect those interactions were expected to be self-evident by the guru's, but from the docs, its not all that well explained. Hi

Re: [Emc-users] G76 docs need a better explanation

2014-05-21 Thread Kirk Wallace
On 05/21/2014 05:07 AM, Gene Heskett wrote: ... raising the squeak to several kilohertz. So most of my threads are 40 to 50 pass, 5 to 10 minutes runtime affairs, to get a decent looking thread. For a thread of that size (19,5 mm), make J about one quarter to one third of K, maybe even half

Re: [Emc-users] G76 docs need a better explanation

2014-05-21 Thread Gene Heskett
On Wednesday 21 May 2014 10:30:44 Kirk Wallace did opine And Gene did reply: On 05/21/2014 05:07 AM, Gene Heskett wrote: ... raising the squeak to several kilohertz. So most of my threads are 40 to 50 pass, 5 to 10 minutes runtime affairs, to get a decent looking thread. For a thread

[Emc-users] G76 docs need a better explanation

2014-05-20 Thread Gene Heskett
Greetings docs maintainers; I found this after noon that there is a large interaction between the driveline value, and the J and K values. I believe it should be pointed out that all 3 interact. I made some mods to my wrapper script a few days ago that resulted in only 3 passes to cut the