#linuxcnc-devel | Logs for 2018-09-16
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[07:07:11] <jthornton> pcw_home: there are a bunch of typos in the 7i77 manual referring to 7i76
[07:30:44] -linuxcnc-github:#linuxcnc-devel- [13linuxcnc] 15andypugh pushed 1 new commit to 06andypugh/multispindle-master: 02 https://github.com/LinuxCNC/linuxcnc/commit/007a052cc3fef0a3217809045553d9d2640baf78
[07:30:44] -linuxcnc-github:#linuxcnc-devel- 13linuxcnc/06andypugh/multispindle-master 14007a052 15andy pugh: Multispindle: Make halui.spindle.is-on mirror spindle.is-on...
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[08:42:18] <pcw_home> Ill fix tomorrow. probably copy-paste errors when I added the D versions
[08:48:12] <jthornton> just thought I'd let you know
[09:09:05] <pcw_home> Thanks!
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[09:37:50] -linuxcnc-github:#linuxcnc-devel- [13linuxcnc] 15andypugh pushed 1 new commit to 06andypugh/multispindle-master: 02 https://github.com/LinuxCNC/linuxcnc/commit/44050518e91c9b1e41169ec8aef7aacb77953268
[09:37:50] -linuxcnc-github:#linuxcnc-devel- 13linuxcnc/06andypugh/multispindle-master 144405051 15andy pugh: Multispindle: Switch to using the $ character for spindle selection....
[09:57:57] <andypugh> Why am I so sure that the only reply to my recent email about multispindle to the mailing lists will be from Gene, and he will have missed the point?
[10:02:58] <jthornton> I don't get them anymore...
[10:13:18] <rene_dev_> his emails? :D
[10:13:44] <rene_dev_> who is the release manager?
[10:18:33] <rene_dev_> I am thinking about live tooling on my lathe, and that might come in handy.
[10:19:20] <rene_dev_> I still did not find a good way of using spindles as axis. both my lathe and mill can run the spindle in position mode, but thats not set up in hal
[10:23:11] <pcw_home> spindle as axis seems pretty awkward in motion. It seems like a constant velocity mode could be added to motion axis rather than doing it in hal
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[10:24:27] <rene_dev_> yes, thats what I thought as well.
[10:24:38] <rene_dev_> but there is currently no nice way of doing it.
[10:25:51] <rene_dev_> so I thought about muxing stuff in hal, to change from position to velocity mode. but what I really want is to have the axis go at a constant velocity on spindle enable
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[10:26:01] <pcw_home> Yes
[10:26:28] <pcw_home> I think motion is the best place for this mode change
[10:26:51] <rene_dev_> yeah, also there is no spindle amp fault pin, which annoys me a lot :D
[10:30:12] <pcw_home> so a spindle mode pin for each joint?
[10:30:59] <pcw_home> or just ABC
[10:32:08] <rene_dev_> abc or each one, dont really care. why not each one?
[10:33:14] <pcw_home> Depending on hardware you might need to re-home when going back to position mode
[10:34:23] <rene_dev_> with the stmbl I use the encoder index as 0
[10:35:42] <pcw_home> dont want to unwind the spindle motion...
[10:35:51] <rene_dev_> yeah, of course
[10:36:56] <pcw_home> probably safest to re-home to index
[10:38:06] <rene_dev_> yes, thats what I thought
[10:50:48] <rene_dev_> andypugh can you add fault and amp-enable pins for the spindles while you are at it?
[10:51:40] <andypugh> I actually only started multispindle because I thought we should have spindle-homing,
[10:52:17] <rene_dev_> ah, does that work now?
[10:52:40] <andypugh> I don’t think we need amp-enable. (and should stop having separate amp-enables for every axis, as they all go on and off at the same time)
[10:52:56] <andypugh> No, I haven’t started on spindle homing yet :-)
[10:53:18] <andypugh> amp-fault for spindles seems reasonable, though
[10:53:27] <rene_dev_> yeah, ok. but the fault makes sense
[10:55:30] <andypugh> Enough software for a while. I am off to machine a chuck backplate.
[10:55:36] <rene_dev_> I also think amp fault should be a int, so you can see the error code in the gui :)
[10:55:49] <rene_dev_> ah, I also need to machine chuck backplates...
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[11:27:02] Jin|away is now known as Jin^eLD
[11:27:48] <Jin^eLD> doh.. I need a chuck backplate as well, but I have no mountable chuck to do it :P
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[11:36:46] <rene_dev_> depending on your spindle nose, you dont need that.
[11:37:47] <Jin^eLD> unfortunately I do :( even worse, the adapters that can be bought have a wrong number of holes, I have quite a special spindle nose version
[11:38:20] <Jin^eLD> these days if you have morse nr 4 you have only 3 holes, I have 4 holes
[11:38:50] <rene_dev_> morse with holes?
[11:40:52] <Jin^eLD> http://deadlock.dhs.org
[11:41:30] <Jin^eLD> http://deadlock.dhs.org
[11:41:58] <rene_dev_> thats a kurzkegel, my machine has the same
[11:42:19] <Jin^eLD> there are bison chucks that would fit if I had 3 holes, I know some people who redrill the chucks but I am not sure thats a good idea given their price
[11:42:33] <Jin^eLD> not sure why my manual says morese 4, but yeah, probably kk4 is the correct description
[11:42:46] <rene_dev_> DIN 55027
[11:42:50] <rene_dev_> yes, kk5
[11:43:04] <rene_dev_> you can get backplates from ebay
[11:43:18] <Jin^eLD> only for 3 hole spindles :) thats the thing
[11:43:23] <Jin^eLD> this DIN standard - 3 holes
[11:43:24] <Jin^eLD> not 4
[11:43:49] <rene_dev_> no, that depends on the size
[11:44:14] <Jin^eLD> well, yes, kk4 - 3 holes
[11:44:36] <Jin^eLD> I think from kk5 or so they use 4 holes as well
[11:44:55] <rene_dev_> https://imgur.com
[11:45:35] <rene_dev_> 5-8 have 4 holes
[11:46:31] <Jin^eLD> lets put it that way: I was not able to find a kk4 with 4 holes.. only with 3, I checked TOS, Bison, some others, I also looked for adapters
[11:46:40] <Jin^eLD> if you know where to get one - you'll make me very happy :)
[11:46:53] <rene_dev_> sure its not kk5?
[11:47:13] <Jin^eLD> yes, sure
[11:47:18] <rene_dev_> you can just redrill the thread for the stuts
[11:47:26] <rene_dev_> anywhere you want
[11:47:40] <Jin^eLD> well I can't - I don't have teh equipment to do it precisely
[11:49:59] <Jin^eLD> but generally yes - that will be the only possibility for me, to either make or buy an adapter and find someone who can redrill it for me
[11:50:47] <Jin^eLD> only 1-2 years later model of my lathe already uses the common 3 hole kk4 spindle
[11:50:54] <Jin^eLD> but I still have the old 4-hole one
[11:57:55] <rene_dev_> thats annoying
[11:58:14] <Jin^eLD> it is
[12:00:07] <Jin^eLD> and I got it without a chuck, only with collects and an Ortlieb collet system
[12:00:35] <Jin^eLD> so I'm now in a bit of a chicken and egg situation - can't find a chuck for my spindle, but need a chuck to make a backplate
[12:01:32] <andypugh> How annoying for you :-)
[12:02:05] <Jin^eLD> :)
[12:04:02] <andypugh> Looking at CAD (as I have a D1-4 CAD model open now) at least re-drilling a 3-hole to 4-hole doesn’t have any hole-clash problems.
[12:04:31] <andypugh> Is it dimensionally similar to D1-4 but with threaded studs?
[12:04:37] <Jin^eLD> it does work, I know people from forums who did that, they reuse one hole and drill the other 3 anew, its doable
[12:05:00] <Jin^eLD> the studs are threaded, yes
[12:06:00] <Jin^eLD> I have no dril for that though, nothing good or usable enough, but I might try at my friends, he has a rotary table
[12:06:13] <Jin^eLD> or we finish his MAHO retrofit :)
[12:08:01] <andypugh> It is identical to D1-4, but you (probably) can’t re-drill a D1-4 chuck / backplate because of a clash with the anti-rotation screw hole.
[12:08:35] <andypugh> Though it might be worth a try, they are a bit more readily available, I think
[12:09:13] <Jin^eLD> TOS sells backplates for bajonet/kk4 which I could redrill, but it costs almost half of the price of a new chuck, so I was inclined to try and make one myself, but probably wont be able to due to the chicken and egg problem I have
[12:09:57] <andypugh> Well, rene-dev did say that he was about to make a backplate…
[12:10:19] <hazzy-m> andypugh: WIth multi spindle do you specify the spindle number with, say G76? Like G76 P.... $1 ?
[12:10:27] <andypugh> (I am actually machining a chuck for direct-mount)
[12:10:37] <andypugh> hazzy-m: Yes
[12:10:52] <hazzy-m> ok
[12:11:06] <andypugh> And in that case it _only_ specifies which encoder the Z is slaved to
[12:12:16] <hazzy-m> ah, interesting
[12:12:51] <andypugh> I should have anticipated an email saying “I don’t like how you have done it, it isn’t the way I would have done it after 2 minutes thought, spend anohter 2 months doing it my way"
[12:14:07] <hazzy-m> We all have are own idea of how WE would have done it, but then none of us would have done it as all, so ...
[12:14:16] <andypugh> Incidentally, for drilling chuck backplates, polar coordinate mode in LinuxCNC is really useful.
[12:14:34] <hazzy-m> I love polar mode!
[12:14:48] <andypugh> hazzy-m: Yes, quite. And I did canvas opinions when I started (about 2 years ago)
[12:36:44] <rene_dev_> ah, I always just cammed the hole circle :D
[12:37:02] <rene_dev_> Jin^eLD where do you live?
[12:37:25] <Jin^eLD> rene-dev: Bratislava, Slovakia
[12:39:36] <rene_dev_> ah
[12:39:57] <Jin^eLD> you?
[12:40:24] <rene_dev_> germany, but Im in Vienna occasionally
[12:40:36] <Jin^eLD> my parents live there
[12:40:50] <Jin^eLD> I spent 20 years in Vienna, then moved to .sk because I did not like it anymore :)
[12:42:12] <Jin^eLD> I go to Germany for the metalworks courses in Schweinfurt, metal shaping oldtimer bodyparts
[12:44:16] <rene_dev_> oh, cool
[12:44:24] <rene_dev_> I do a lot of bodywork on cars as well
[12:44:52] <Jin^eLD> sandbag and english wheel and stuff like that?
[12:46:17] <rene_dev_> yes, a little. but most parts I do are straight, and bend. the more complex shapes I just approximate as good as I can get them.
[12:46:53] <rene_dev_> or give it to pepole that can do it better than me :D
[12:47:03] <Jin^eLD> the sandbag-english wheel stuff is exactly whta they teach in Schweinfurt, thats what I want to learn
[12:47:14] <Jin^eLD> building up a workshop
[12:47:46] <Jin^eLD> so I got this ancient super robust beadroller, but it came without beads, so I bought a lathe so I can turn my own beads :)
[12:48:21] <rene_dev_> ah, I like that approach :)
[12:48:23] <Jin^eLD> one thing spawns another thing spawns yet another thing and so on
[12:48:39] <rene_dev_> now you need a mill to make the backplate to make the wheels
[12:49:05] <Jin^eLD> lol sort of, but here I rely on a friend of mine, he is in the process of retrofitting an MH400E mill
[12:49:13] <Jin^eLD> I wrote a comp for him which does the gearshifting
[12:49:52] <Jin^eLD> so I hope if all works out I won't need to buy a mill myself
[12:53:46] <Jin^eLD> downside of this approach is - its time consuming, now that I got the lathe, its again a whole new world to learn turning, learn how to use it, and then - those backplate issues and stuff like that, all costs time
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[20:04:27] <hazzy-m> andypugh: You predicted it, there goes gene :D
[20:15:08] <hazzy-m> why is the spindle section in the INI called SPINDLE_9 ?
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