#linuxcnc Logs

Jun 25 2020

#linuxcnc Calendar

12:29 AM pink_vampire: https://www.wikiwand.com/en/Railway_coupling
01:58 AM Loetmichel: mornin'... Note: a convertible is a time/ hairdryer saving device... commuted "open" to work today with wet, unbrushed hair form showering... "Offenbach, 120kph, the hairdo is perfect" to paraphrase an old advertisement ;)
02:00 AM pink_vampire: nice!
02:01 AM pink_vampire: convertible hair dryer
03:18 AM pink_vampire: https://i.imgur.com/7P4T2Fo.png
03:30 AM cpresser: what is the english technical term for a shaft/thingie that does run excentric on purpose. for example in a peristaltic ring pump?
03:34 AM selroc: hello, who know generic cam ?
03:41 AM rmu|w: cpresser: cam?
03:43 AM selroc: genericcam
03:44 AM selroc: I succeded compiling and running genericcam with ubuntu
03:44 AM pink_vampire: selroc: ! long time!
03:45 AM selroc: hi pink :-)
03:45 AM pink_vampire: where have you been all this time?
03:45 AM selroc: been working hard
03:46 AM selroc: and I found this project which looks promising http://genericcam.sourceforge.net/
03:47 AM selroc: thought maybe someone here wants to contribute...
03:50 AM pink_vampire: I'm reading. but I'm not 100% sure what is the use for it
03:51 AM selroc: it is to generate gcode from STL, the cnc machine can be basically anything up to 9 axes
03:52 AM selroc: I am running it with ubuntu bionic
03:53 AM pink_vampire: so this is a cam?
03:53 AM selroc: sure
03:53 AM selroc: but, up to 9 axes, never seen before!
03:54 AM selroc: and GPL so it is free
03:54 AM rmu|w: selroc: what is the status of this project? does it generate g-code?
03:55 AM selroc: the web page states it pre-alpha stage, that's why I thought maybe someone here want to contribute
03:56 AM pink_vampire: Last Update: 2020-05-09
03:56 AM rmu|w: there are tab characters in the source-code, i refuse to touch that ;)
03:57 AM pink_vampire: selroc: do you think it support computer vision?
03:57 AM selroc: no i don't think but you can request features and contribute :-)
03:58 AM pink_vampire: so you can generate and compensate movement based on bar-codes that the camera see.
03:58 AM pink_vampire: how?
03:58 AM selroc: https://sourceforge.net/p/crevaya/feature-requests/
04:00 AM selroc: the last update is recent
04:01 AM selroc: I guess it is matter of having people interested so that development continues
04:09 AM selroc: there is a video of toolpath generation https://www.youtube-nocookie.com/embed/dvE7PgzYoLI?rel=0
04:12 AM cpresser: rmu|w: thanks
04:13 AM selroc: rmu|w, it does generate gcode
04:14 AM rmu|w: selroc: impressive stuff. maybe i will have to reevaluate my allergy against tab characters
04:16 AM selroc: do you know C++ ?
04:17 AM rmu|w: I'm fluent enough
04:18 AM selroc: good news :-)
04:21 AM selroc: i'll be back later, time for lunch
04:43 AM pink_vampire: selroc: very well done!
04:45 AM pink_vampire: there is alot of potential in this demo video, the tool path is very basic for 3d machining, but it is a start.
05:07 AM JT-Cave: morning
05:12 AM selroc: yes pink, also the cnc machine can be defined in LUA language
05:13 AM XXCoder: generic cam interesting
05:15 AM pink_vampire: selroc: what is LUA language?
05:15 AM XXCoder: programming language
05:15 AM pink_vampire: what is the best way to solder brass?
05:16 AM selroc: it is a scripting language http://www.lua.org/
05:16 AM XXCoder: its interesting one, I programmed in it a little using minecraft addon that allows me to program a robot
05:17 AM pink_vampire: selroc: went above my head
05:18 AM selroc: pink, I'm sure it is doable for you, don't be afraid
05:21 AM pink_vampire: I'm more in to mechanical systems then programming.
05:22 AM selroc: pink are you using arduino?
05:23 AM XXCoder: to run a mill?
05:24 AM selroc: no just programing an arduino
05:24 AM pink_vampire: my mill run on linux cnc.
05:24 AM XXCoder: took us a bit to get her to convert it to linuxcnc
05:25 AM XXCoder: i still remember that heh
05:25 AM pink_vampire: yes, I'm using it, and programming it, is one of the most hated tasks on my list.
05:26 AM Deejay: hi
05:26 AM XXCoder: hopefully it was worth it
05:26 AM pink_vampire: sometimes...
05:27 AM selroc: so I can find help here to convert a proprietary cnc to linuxcnc?
05:27 AM XXCoder: usually this is good channel for that yes
05:28 AM Loetmichel: del: that project requires at least decent knowledge in electronics and mechanics though.
05:29 AM Loetmichel: just as a warning. A "plug and play" solution it is not.
05:29 AM Loetmichel: ... usually
05:32 AM selroc: I have the manual of the machine, starting from there would like to convert to linuxcnc
05:34 AM pink_vampire: what machine do you have?
05:34 AM selroc: 3 axis router
05:34 AM Loetmichel: which one?
05:35 AM selroc: it is called Jewel 8
05:35 AM selroc: from an italian manufacturer
05:35 AM Loetmichel: any link?
05:36 AM selroc: let me see
05:36 AM selroc: http://www.infodelta.it/blu8%20jewel.htm
05:38 AM pink_vampire: look like a decent machine
05:38 AM pink_vampire: how do you control it now?
05:39 AM selroc: it has a proprietary software running on Windows 7
05:39 AM pink_vampire: is it use lpt? usb?
05:39 AM selroc: lpt
05:40 AM pink_vampire: what computer do you have?
05:40 AM XXCoder: let me guess
05:40 AM selroc: it is a small dedicated pc that I got with the machine
05:40 AM XXCoder: mesa 3? (mispelled)
05:41 AM pink_vampire: download the linuxcnc live cd
05:41 AM pink_vampire: and give it a try
05:42 AM selroc: yes thank you, I will
05:42 AM Loetmichel: selroc: that looks like a fairly easy project... get a PC with LPT port and low latency, connect lpt pins to stepper drivers and end switches, install linuxCNC, configure, done
05:43 AM Loetmichel: ah, it even runs from LPT now... then i would just measure which pin does what so you can configure the LPT in LinuxCNC correctly and just put a new HDD in the PC
05:43 AM selroc: I have a pc with lpt and an additional 5i25
05:43 AM Loetmichel: (to have the old one as a backup in case you cant get it to run
05:44 AM Loetmichel: and then install linuxCNC life CNC on that PC
05:44 AM Loetmichel: should run OOTB if you know the lpt pinout
05:45 AM selroc: I will read the manual and look for wirings
05:45 AM selroc: it should be easy then
05:45 AM Loetmichel: yes
05:45 AM Loetmichel: should be doable in less than two hours if you have all the lpt pin designations
05:46 AM XXCoder: reasonably easy anyway. check everything
05:46 AM Loetmichel: aka: step/dir for the axis, the end switches and the spindle pin
05:46 AM selroc: the spindle is just manual start
05:46 AM selroc: not connected to lpt
05:47 AM selroc: I need motors and home sensors
05:47 AM selroc: ok...going to work on that
05:48 AM selroc: see you and thanks to all
05:48 AM Loetmichel: any idea what specs that PC has?
05:48 AM Loetmichel: the one thats running the win soft now?
05:49 AM selroc: going to look for that too
05:49 AM selroc: it is a small pc that runs on Atom I think
05:51 AM selroc: later, and take care
05:56 AM XXCoder: heyy nice https://www.aliexpress.com/item/32976014070.html
05:56 AM XXCoder: perfect for machine
05:56 AM XXCoder: doesnt say what resolution it has tho
05:59 AM pink_vampire: XXCoder: thanks <3
05:59 AM XXCoder: for?
05:59 AM pink_vampire: my machine
06:00 AM pink_vampire: https://i.imgur.com/wWPij14.png
06:00 AM XXCoder: it looks good. you did fix the z issue you was having when you first come in?
06:00 AM pink_vampire: back then I had a TV at home like any normal person
06:01 AM pink_vampire: it is a very old picture of the machine
06:01 AM XXCoder: oh yeah thats before that hiant machine booth you made
06:01 AM XXCoder: hows that working out
07:07 AM pink_vampire: the enclose is one of the most important upgrades that I did,
09:09 AM JT-Cave: hmm Raspbian is gone
09:21 AM skunkworks: You mean it is now named something else?
09:35 AM JT-Cave: Raspberry Pi OS now
09:38 AM * JT-Shop wished the Rpi supported PyQt5 properly...
10:07 AM Loetmichel: skunkworks: probably first tstep to abandon debian in the near future
10:08 AM * Loetmichel is still waiting on a coworker that promised to "refine" me a mesh from fallout 4, the desktop terminal... so that i can print it fitting for a 10" touch display... Raspi4 4gb is already at home... ;)
01:20 PM t4nk_freenode: happy birthday, pink_vampire
02:41 PM unterhaus: I wish I had birthdays. Oh, no I don't
02:41 PM unterhaus: Last year I flew to France on my birthday so I wouldn't have to have a party
02:51 PM perry_j1987: hows it going guys
03:39 PM pink_vampire: t4nk_freenode: Thanks!
03:40 PM Tom_L: too quiet
03:40 PM pink_vampire: yeah
03:41 PM * XXCoder bangs on drums
03:41 PM Tom_L: JT-Shop, have you tried any qtpyvcp on the rpi4?
03:41 PM pink_vampire: pink_vampire: want to sleep
03:41 PM Tom_L: XXCoder, rather hear an extra long cutter taking the final pass
03:41 PM XXCoder: lol
03:42 PM * XXCoder sets it so its chattering very loudly
03:42 PM JT-Shop: Tom_L, my coop deux has a 7" touch screen and uses PyQt
03:43 PM Tom_L: JT-Shop, i was just wondering if probebasic etc would run on it?
03:43 PM Tom_L: i know probebasic wouldn't... it's too big
03:43 PM Tom_L: well unless you have a big screen no it
03:43 PM Tom_L: on
03:44 PM JT-Shop: yea you need a giant screen for that lol
03:44 PM JT-Shop: I can't get any colors to work with qt on the rpi
03:44 PM Tom_L: have you set one up for a mill for it yet?
03:45 PM Tom_L: huh
03:45 PM JT-Shop: no
03:45 PM JT-Shop: just chicken coops
03:45 PM Tom_L: important stuff...
03:46 PM Tom_L: JT-Shop, have you tried any more thread milling?
03:47 PM JT-Shop: no, not had time to do much machining
03:47 PM Tom_L: get the log sawed up?
03:49 PM JT-Shop: got 3 slabs off of both of them last weekend, hope to get 4th slab off of each log this weekend then cut the big on into two 12" x 24" cants and saw some out of the small one
03:50 PM JT-Shop: hope to be done with the Alaskan sawmill this weekend
03:52 PM pink_vampire: any idea for diy wireless probe?
03:56 PM JT-Shop: order one on line
03:57 PM pink_vampire: I don't think my pockets are deep enough
03:58 PM pink_vampire: JT-Shop: ^
04:08 PM JT-Shop: might have to have a wire then
04:13 PM JT-Shop: LOL 30 minutes of programming and setup for an op that takes 30 seconds... no wonder one off parts are expensive
04:19 PM Tom_L: hardly worth cnc for one
04:19 PM Deejay: gn8
04:22 PM gregcnc: if you can do it manually...
05:02 PM unterhaus: I have done a lot of stuff with cnc. Manual can be tedious, doing the same thing over and over
05:02 PM unterhaus: ^one time jobs
05:03 PM unterhaus: If I have to make a slot, for example. Or even just a hole pattern
06:55 PM jymmmm: These are kinda cool, automatic transfer switches DIN mount... https://www.ebay.com/itm/113302259936
07:01 PM jymmmm: https://www.youtube.com/watch?v=OWSlYFiPEMI
07:13 PM perry_j1987: hmm so with er20 collet
07:13 PM perry_j1987: i have no z repeatability
07:13 PM perry_j1987: and everything is calculated to the centerline of the tools anyhow... so i might as well just make everything tool 1
07:13 PM perry_j1987: since i reset z on each tool change and keep things simple eh?
07:15 PM jymmmm: perry_j1987: Just use one tool for everything, problem solved
07:17 PM perry_j1987: collets not big enough to chuck a hammer
07:19 PM SpeedEvil: Is pushing the tool all the way to the back not an option?
07:19 PM SpeedEvil: Or do you mean more repeatable than that?
07:21 PM perry_j1987: no there's too much room inside for that
07:21 PM perry_j1987: er collets are not repeatable solutions
07:30 PM Rab: perry_j1987, do you mean that even if the tool is registered with the face of the collet, e.g. with a locking collar, the collet itself is not repeatable in the chuck?
07:33 PM perry_j1987: if you change the tightness its moving ever so slightly on a taper
07:34 PM Rab: Hmm, I see.
07:35 PM Tom_L: use thermotool holders :)
07:37 PM perry_j1987: ya but my spindle is just an er20 heh
07:37 PM perry_j1987: i really need to get a real mill
07:38 PM Tom_L: https://www.mscdirect.com/product/details/07639941
07:41 PM perry_j1987: i didnt know that existed heh
07:41 PM Tom_L: https://www.paragon-supply.com/catalogue/product/190299
07:41 PM SpeedEvil: I thought there was a backup screw under the collet which would mostly eliminate that
07:41 PM perry_j1987: that nose would eat up all my z travel though
07:41 PM Tom_L: i don't know alot about er20 holders
07:43 PM perry_j1987: so many different ways to skin a cat lol
07:52 PM W1N9Zr0: how does that stay in the er taper? special nut sold separately?
07:52 PM Tom_L: most holders use retention knobs. i dunno how er20 works
07:53 PM Tom_L: or a pull stud
07:53 PM perry_j1987: i was wondering that without the compression of the collet itself etc
07:53 PM perry_j1987: but 90 bucks a holder is steep
07:54 PM perry_j1987: so i got some of those miteebite uniforce clamps sitting here
07:54 PM perry_j1987: and some chunks of aluminum
07:54 PM perry_j1987: im trying to envision a fixture that i can put two lengths of bar stock in and clamp it down and slot out blanks that are held by the uniforce clamps
07:55 PM perry_j1987: then i was thinking if i made some holes in the fixture and a backer plate that held dowel pins that i could slide in underneath and the dowels poke through then the fixture doubles as the milling fixture too
07:55 PM Tom_L: i'm curious how repeatable they are
07:59 PM Tom_L: https://lh3.googleusercontent.com/proxy/4nDic_1bO4geljkAs6_MiGbZEPWRwjcNLtzwXaZE01XPn5QSL6aksBR_7FrGxnDC8vPr4OWARujAeZTke9QCGgwSPmBdOvarIEXVwuHr4WNB-WlcJzr3
08:00 PM Tom_L: https://www.cnccookbook.com/mitee-bite-clamps-and-shopmade-pallet-fixture-for-lots-of-small-parts/
08:00 PM SpeedEvil: perry_j1987: I assume you've tried using a torque wrench?
08:01 PM perry_j1987: SpeedEvil for what
08:01 PM Tom_L: collet nut
08:01 PM SpeedEvil: If the concern is the taper pulling an uncertain amount, a torque wrench on the collet would somewhat mitigate that
08:02 PM perry_j1987: ya they are also collets so some of the tools will be loose in it till it bites down
08:09 PM roycroft: perry_j1987: are you talking about holding tooling in a collet in a mill or holding parts in a collet in a lathe?
08:11 PM roycroft: i should probably not assume those are the two options that could be the matter under discussion, but they would certainly be the two most common options
08:11 PM perry_j1987: i forgot how this conversation started lol
08:11 PM perry_j1987: i have a 6040 with er20 collet
08:12 PM roycroft: what is a 6040?
08:12 PM roycroft: other than a decent monthly salary
08:12 PM perry_j1987: its a cnc router somewhat capable of milling metal
08:12 PM roycroft: ok
08:13 PM perry_j1987: i was talking about redoing my tool library so everything is tool 1
08:13 PM perry_j1987: since i have er20 collet anyway
08:13 PM perry_j1987: its all just using centerline of spindle and then i set the z on tool changes
08:13 PM roycroft: i saw some discussion of collets and repeatability
08:14 PM roycroft: but not all the details
08:14 PM roycroft: so
08:14 PM roycroft: it's tooling in a collet
08:14 PM roycroft: in which case, you might look into something like the tormach tool holding system
08:14 PM roycroft: which is designed for repeatability
08:15 PM roycroft: and their toolholders can handle chucks, collets, and many other things
08:15 PM roycroft: i'm not sure if you could adapt that system to your spindle
08:15 PM roycroft: if not, and you can't get anything similar to work with your spindle, then you're stuck with having to reindex with every tooling change
08:16 PM roycroft: like almost every cnc router operator in the universe has to do
08:16 PM perry_j1987: aye im just going to buy a new mill that will have a better tool holder system than er collets
08:16 PM roycroft: well take a look at the tormach system
08:16 PM perry_j1987: not compatible with er spindles
08:17 PM roycroft: it's compatible with r8
08:17 PM roycroft: and since you're looking at getting a new machine, it might work for the new machine
08:18 PM perry_j1987: aye i'll be getting r8 with the new machine
08:19 PM roycroft: i don't have any direct experience with tormach gear, but what i get from all the reading and watching videos and the like is that their machines are ok, but generally not as good as they portray them to be, but their tool holder system is really nice
08:20 PM roycroft: and it seems a lot of folks get the tormach tool holder system for their non-tormach milling machines
08:20 PM roycroft: which is why i mentioned it
08:22 PM perry_j1987: im trying to figure out which mill to get
08:24 PM W1N9Zr0: we use a ghetto tool length probe for er20 spindle on a small machine: a piece of single sided PCB, glued to the table, attached to probe pin. the probe_screen_v2 script runs the probe cycle on tool change. pretty good repeatability
08:25 PM perry_j1987: that would be awesome to setup
08:26 PM perry_j1987: ok found my box with bushings and dowel pins that i had from another project
08:32 PM perry_j1987: contemplating how to clean up this alum for the backing plate
08:32 PM perry_j1987: i dont have a fly cutter
08:52 PM jdh: how sad
08:57 PM perry_j1987: i wouldnt want to put one in this spindle if i had one lol
08:57 PM perry_j1987: 24k spindle
09:10 PM CaptHindsight: roycroft: what size is the Tormach tool holder?
09:10 PM CaptHindsight: I'll look it up if you're not around
09:11 PM Tom_L: i think he said R8
09:12 PM jdh: I thought it was a 3/4" straight shaft
09:13 PM CaptHindsight: https://tormach.com/accessories/tool-changing.html
09:15 PM CaptHindsight: https://tormach.com/machines/mills/pcnc-440.html
09:17 PM CaptHindsight: Spindle Taper: R8
09:18 PM jdh: that's not the tormach tool holder
09:18 PM CaptHindsight: yeah still digging into the site
09:19 PM CaptHindsight: https://tormach.com/tts-collet-mt3-30251.html
09:19 PM CaptHindsight: TTS Collet: MT3\
09:20 PM jdh: nah
09:20 PM CaptHindsight: The TTS-MT3 adaptor collet is for use with TTS tools with MT3 spindle
09:20 PM jdh: 3/4" straight shaft
09:21 PM CaptHindsight: have alink, wtf is it on their site
09:22 PM CaptHindsight: their page for mill tool holding has BT30 and TTS
09:22 PM jdh: I thought their mills were just R8
09:22 PM jdh: put a 3/4" R8 collet in and it holds TTS
09:24 PM CaptHindsight: https://tormach.com/accessories/tool-holding/mill-tool-holding.html
09:25 PM jdh: https://tormach.com/tts-adapter-collet-r8-50568.html
09:26 PM jdh: heh, 19.05mm instead of 3/4"
09:26 PM CaptHindsight: Linux with Lock in
09:26 PM jdh: haven't seen their new mills. BT30 looks a lot less half-assed than R8
09:28 PM CaptHindsight: about a 2 hour drive from me
09:29 PM CaptHindsight: the founder passed away a couple of years ago in a boating accident
09:30 PM CaptHindsight: 5 years ago
09:31 PM jdh: I'd take one.
09:32 PM CaptHindsight: i find big iron near me for lower prices
09:34 PM jdh: no room for big iron
09:34 PM CaptHindsight: https://www.ebay.com/itm/1979-Matsuura-MC-500V-CNC-Mill-with-YASNAC-2000G-control/283531836872
09:34 PM jdh: or need
09:35 PM CaptHindsight: I just saw this one, I might get it
09:38 PM CaptHindsight: i have a 710 that I never see parts for
09:39 PM CaptHindsight: oh wow they have 2 of them!
09:40 PM perry_j1987: its r8 collet with flat face and a 3/4 tool holder with a registration thing
10:49 PM perry_j1987_: gah dont want to move the machine vise
11:33 PM jymmmm: Loetmichel: you around?
11:48 PM roycroft: he's probably still sleeping
11:57 PM CaptHindsight: jymmmm: try him back in 2 hrs