#linuxcnc Logs

May 30 2019

#linuxcnc Calendar

04:13 AM XXCoder: one insurance company now think im in miliary
04:17 AM XXCoder: kinda late. lol
04:17 AM XXCoder: not that im qualified either lol
04:53 AM Tom_L: morning
04:54 AM XXCoder: to
04:54 AM XXCoder: yo
05:40 AM jthornton: morning
05:42 AM Deejay: hey jt
05:43 AM XXCoder: yo
05:47 AM XXCoder: molecules of freedom lol
08:22 AM pink_vampire: hi
08:22 AM pink_vampire: XXCoder:
08:22 AM pink_vampire: jthornton:
08:24 AM JT-Shop: hi
10:37 AM Jin^eLD: oooh so the \ indent did it
10:38 AM Jin^eLD: oops wrong window sorry :)
12:35 PM perry_j1987: so tool offsets for inner diameter tools?
12:35 PM perry_j1987: came up with nothing on google :P
12:44 PM gregcnc: perry_j1987 what's the question?
12:48 PM perry_j1987: how do you setup offset for them
12:49 PM perry_j1987: i made a 60 degree HSS threading tool on the bench grinder
12:49 PM gregcnc: same as any other tool
12:49 PM perry_j1987: and it occured to me i dont know how to setup the offsets for inner tools
12:49 PM perry_j1987: so i'd touch off from the backside of a diameter then with the tip of the tool
12:51 PM gregcnc: back of the OD? if you have enough X travel, or the ID of a bore
12:56 PM perry_j1987: ok
02:47 PM Deejay: gn8
03:03 PM XXCoder: pink_vampire: yo
03:04 PM perry_j1987: ok havnt even gotten around to what i set out to do yet lol
03:05 PM perry_j1987: walked by toolchest and noticed i hadnt cut the new roll of drawer liner so ended up doing that lol
03:05 PM perry_j1987: nice not having everything rolling around in there now though
03:10 PM CaptHindsight: anyone find a good brand of PC case fans?
03:13 PM pink_vampire: hi XXCoder
03:14 PM XXCoder: whats up
03:14 PM perry_j1987: CaptHindsight whatever i find in an old case is what i've used in the past heh
03:15 PM XXCoder: thats great idea, though likely need cleanup and use fan oil
03:16 PM CaptHindsight: AC, ball bearing, impedance protected etc
03:16 PM CaptHindsight: run 24/7 for years
03:16 PM perry_j1987: i dunno sounds a bit too fancy
03:16 PM perry_j1987: those old case fans in P4 towers still work to this day lol
03:17 PM CaptHindsight: or until it is so clogged it requires a rescue team
03:18 PM CaptHindsight: https://www.mouser.com/ProductDetail/Omron-Electronics/R87T-A4A07H?qs=sGAEpiMZZMtvCBYR4YXH8ljcFhAzyvWdhoxSkMpqhm0%3D
03:20 PM CaptHindsight: https://www.mouser.com/ProductDetail/NMB-Technologies/4715HS-12T-B5A-A00?qs=sGAEpiMZZMtvCBYR4YXH8kjbaIzGU4PKq3H084HI%2FnlfZ0UM5U6qtg%3D%3D
03:21 PM CaptHindsight: <$15, ~100cfm
03:24 PM CaptHindsight: and ball bearings
03:27 PM XXCoder: nice!
03:28 PM XXCoder: ball bearing ones tend to last forever
03:28 PM XXCoder: can just clean and add tiny amount of fan oil
03:31 PM XXCoder: video about fan oil https://www.youtube.com/watch?v=FUUlfbWFQOM
03:35 PM CaptHindsight: you also need to have air filters
03:36 PM CaptHindsight: I've had large 24" fans get full of hair
03:37 PM CaptHindsight: doesn't help much that we do CNC haircuts :)
03:37 PM XXCoder: cnc haircuts?
03:39 PM CaptHindsight: robobarber
03:40 PM XXCoder: im pretty sure that youre kidding :P
03:40 PM perry_j1987: dick van dyke already tried that
03:40 PM perry_j1987: on chitty chitty bang bang
03:41 PM perry_j1987: didnt work just gets big guys pissed off at you
03:41 PM CaptHindsight: https://www.youtube.com/watch?v=rkai5AcyG8M
03:43 PM XXCoder: so safe lol
03:46 PM CaptHindsight: https://youtu.be/s-yne8xTNM0?t=55 12 axis
03:46 PM XXCoder: fancy
03:47 PM CaptHindsight: https://youtu.be/s-yne8xTNM0?t=140 need to build this
03:48 PM XXCoder: lol
03:48 PM XXCoder: I want to go to one of those shows now
03:49 PM XXCoder: i bet its expensive tho'
03:49 PM CaptHindsight: one of my favorite things about these shows is that nearly everyone you speak to understands how things work
03:49 PM XXCoder: more orented for corprate than fans
03:50 PM XXCoder: wtf cnc table saw
03:50 PM perry_j1987: i went to one of those design2part shows and it was disapointing
03:50 PM CaptHindsight: D2P is not very exciting
03:50 PM perry_j1987: was imaginging like that vid. but it was just sales people at tiny booths heh
03:50 PM CaptHindsight: mostly local shops showing you that they are there
03:50 PM perry_j1987: ya
03:50 PM CaptHindsight: Fabtech, manufacturing week etc are more fun
03:51 PM XXCoder: too bad lol'
03:51 PM perry_j1987: im going to register for fabtech now heh
03:52 PM CaptHindsight: https://www.fabtechexpo.com/
03:56 PM CaptHindsight: https://www.imts.com/
03:56 PM XXCoder: free if register before nov 8
03:56 PM XXCoder: i dont want to buy a plane ticket so eh
03:56 PM CaptHindsight: https://www.rosemont.com/desconvention/events/surfin-2019/
03:57 PM CaptHindsight: https://www.rosemont.com/desconvention/events/amerimold-June2019/
03:57 PM CaptHindsight: https://www.rosemont.com/desconvention/events/extrusion-2019/
03:57 PM CaptHindsight: https://www.assemblymag.com/the-assembly-show
04:07 PM XXCoder: why why why is it so fucking hard to look up phone numbers?
04:08 PM XXCoder: zillions of bullshit phone sites
04:13 PM perry_j1987: ok so i have an inner threading tool trying to figure out how to do tool offset for it
04:13 PM perry_j1987: i can reach the backside of a outside diameter with it to touch off
04:16 PM perry_j1987: wait think i figured it out heh
04:16 PM perry_j1987: put the diameter as - value on the tool touch off x heh
04:16 PM perry_j1987: looks to be working
04:31 PM CaptHindsight: XXCoder: over abundance of ignorant and lazy people with internet access
04:42 PM gregcnc: that sharnoa is on sale https://www.ebay.com/itm/283438582391
05:13 PM Lee-: that's the same one that was listed as $5k a couple days ago? that's so tempting, but I don't have a place to store it until I can get a shed built
05:33 PM perry_j1987_: im having a not good time trying to figure out fusion360 inner thread cutting lol
05:42 PM jthornton: threading is just one line of code I'm assuming a lathe?
05:43 PM perry_j1987_: well its compounding
05:43 PM perry_j1987_: learning to grind my own tool for it and offsets and everything all at once haha
05:45 PM jthornton: I set a threading tool by turning a small bit of aluminum and measuring the result then set the X
06:16 PM Tom_L: nice day here today
06:16 PM Tom_L: finally.
06:18 PM jthornton: wasn't too bad here either a bit overcast is all
06:19 PM jthornton: looks like a chance of rain Saturday now
06:23 PM Tom_L: do you have any radius cutters? if so where did you get em?
06:24 PM jthornton: from lakeshore carbide
06:25 PM Tom_L: hss would be ok
06:25 PM flyback: Aussie50 of youtube fame, offed himself yesterday :/
06:26 PM pink_vampire: how do i make a face cut with an endmill on the C axis?
06:26 PM pink_vampire: the C axis is like an A axis
08:19 PM gregcnc: CAM instead of the threading cycle in the control?
08:55 PM pink_vampire: gregcnc: my Y axis is gone
08:55 PM pink_vampire: Tom_L: I took my Y axis bearing out, it is look +- ok
08:56 PM pink_vampire: it is 3201-2RS
09:15 PM Tom_L: what problems were you having with it?
09:20 PM tiwake: well
09:20 PM tiwake: I got a first for my career...
09:20 PM tiwake: I got to do the first setup on a brand new CNC machine that had just been unwrapped and set up...
09:20 PM tiwake: set it up and made the first parts
09:20 PM pink_vampire: 0.3mm of play
09:20 PM Tom_L: nice, those are always fun
09:20 PM pink_vampire: round hole is...
09:20 PM Tom_L: they didn't set it up or check it right then
09:20 PM tiwake: I've never done that before
09:22 PM Tom_L: yeah i recall that
09:23 PM tiwake: I have been a machinist a fair bit longer than everybody else there though
09:23 PM tiwake: well, nearly everybody else
09:24 PM pink_vampire: the inner part of the bearing move up and down, is that mean it's gone?
09:24 PM Tom_L: probably
09:24 PM tiwake: side note: I got my panasonic GX9 today \o/
09:25 PM tiwake: its part of my master plan
09:26 PM tiwake: make good parts, take pictures of good parts to promote capabilities, get more work from other sources to make even more good parts
09:27 PM pink_vampire: https://i.imgur.com/V8Jl38t.png
09:27 PM pink_vampire: the play in in the direction of the arrows
09:27 PM pink_vampire: is in*
09:30 PM pink_vampire: Tom_L: ^
09:30 PM Tom_L: depends on the type of bearing but it's likely worn
09:36 PM pink_vampire: this is the model of the bearing 3201-2RS
09:37 PM jdh: it has play when sitting in your hand, or when installed and pre-loaded
09:38 PM pink_vampire: Double Row Ball Bearing
09:39 PM pink_vampire: jdh: i don't get how it is get pre-loaded
09:39 PM pink_vampire: what preload it?
09:39 PM pink_vampire: there is 2 nuts on it,
09:39 PM jdh: I could have sworn I saw angular contact bearing for that number, but not now.
09:40 PM jdh: Double Row Angular Contact Ball Bearing Sealed and Pre-Lubricated with Grease
09:41 PM Tom_L: in that case it would be loose
09:41 PM jdh: there is nothing really keeping it from moving apart, to an extent. it should be axially pre-loaded from the 'outside' in
09:41 PM Tom_L: until it's pre'loaded
09:41 PM pink_vampire: https://i.imgur.com/deAKoKz.png
09:42 PM pink_vampire: maybe there is missing part?
09:43 PM Tom_L: what made you decide to take it apart?
09:43 PM jdh: the bracket should be mounted to the ways
09:44 PM pink_vampire: Tom_L: the crazy play, I can't use the machine with 0.3 mm of play
09:44 PM pink_vampire: jdh: but what pre load it?
09:44 PM Tom_L: you didn't try adjusting it with the nut?
09:44 PM jdh: that is the Y?
09:44 PM pink_vampire: yes
09:45 PM jdh: where did you get the mounts and bearing blocks?
09:45 PM pink_vampire: the ballnut is snug
09:46 PM pink_vampire: automation something,, yearssssss ago
09:49 PM rtagro: hi i need help
09:49 PM pink_vampire: so tightening the nuts just push the inner section of the bearing on the ballscrew shaft, but the ballscrew can pull / push on the outer section
09:49 PM pink_vampire: rtagro: me too
09:50 PM Tom_L: pink_vampire, then you need to shim the outter race to the housing so it doesn't move back and forth
09:50 PM jdh: the shaft has to be rigid axially
09:50 PM Tom_L: or wherever the play is
09:51 PM pink_vampire: the ballscrew pull and push on the cupler
09:51 PM jdh: I had to add shim washers to mine
09:51 PM Tom_L: so now you have a plan./
09:51 PM pink_vampire: even if i weld the outer section to the machine, the inner section can move
09:52 PM pink_vampire: what make the pre load?
09:52 PM pink_vampire: the cupler?
09:52 PM Tom_L: the 2 nuts probably
09:52 PM jdh: the nut
09:52 PM pink_vampire: noo
09:52 PM Tom_L: one locks and one adjusts the preload
09:52 PM pink_vampire: they do nothing!!
09:52 PM Tom_L: bs
09:53 PM Tom_L: if they don't then you need to figure out why
09:53 PM jdh: did you put the bearing on backwards?
09:53 PM Tom_L: yeah that's a possibility
09:54 PM jdh: that's a nice looking bearing housing
09:55 PM jdh: the bearing clamps should hold the outer race, the nut loads the ACB
09:56 PM jdh: button-heads to hold the bearing, or are there actual clamps?
09:56 PM pink_vampire: but the nuts just push the inner section of the bearing
09:56 PM jdh: which is how you load it
09:57 PM rtagro: I have purchace Aliexpress usb motion card and TB6600 with driver, has any one had any expereince with the card ?
09:57 PM pink_vampire: it can load it only if the inner section will be pancake
09:58 PM pink_vampire: I need to push on the inner section, and pull on the outer section
09:58 PM pink_vampire: but how?
09:59 PM rtagro: https://forum.linuxcnc.org/16-stepconf-wizard/11702-3-axis-ebay-stepper-controller-board-port-setup
10:00 PM rtagro: tahst the link i follow with the stepconfig but thats for parelle port, will that be same setting on usb port ?
10:01 PM jdh: in general, usb does not work with linuxcnc
10:01 PM rtagro: ohh lol
10:03 PM pink_vampire: jdh: I need to preload the inner section in relation to the outer section , but now it is just apply pressure on the inner section, and the outer section is fixed to the machine, so if the ballscew push or pull it can move in and out,
10:04 PM jdh: did you put the bearing in with the correct orientation
10:05 PM pink_vampire: it is look identical
10:05 PM jdh: they are unidirectional
10:05 PM pink_vampire: https://bearingsdirect.com/ball-bearings/double-row-ball-bearings/3200-series-light-duty/3201-2rs-double-row-ball-bearing-12x32x159-sealed
10:05 PM pink_vampire: this is the bearing
10:06 PM pink_vampire: http://bearingsdirect.com/3200s.htm
10:06 PM pink_vampire: here there is a picture
10:06 PM pink_vampire: http://bearingsdirect.com/5200Draw.gif
10:06 PM rtagro: what is recomend cheap Parallel Port card thats be frendly with linuxcnc?
10:06 PM pink_vampire: rtagro: C10
10:06 PM rtagro: you got link ?
10:07 PM flyback: I still can't believe aussie50 killed himself
10:07 PM pink_vampire: cnc4pc c10
10:07 PM rtagro: thanks
10:08 PM pink_vampire: I have 2 of them work grate
10:08 PM pink_vampire: rtagro: https://i.imgur.com/JAotJPH.png
10:10 PM rtagro: @pink_vampire nice setup
10:10 PM pink_vampire: my Y axis is dead
10:11 PM jdh: were there any shims, wavy washers, anything inside the bearing housing?
10:12 PM pink_vampire: nothing
10:12 PM pink_vampire: those are the only parts i have
10:12 PM Tom_L: you may need to make / get some
10:13 PM pink_vampire: maybe i need to replace it with 2 thinner bearings with thin shim on the outer section
10:13 PM pink_vampire: and then the nuts will preload the bearings
10:15 PM Rab: rtagro, do you want a parallel port breakout board, or an actual parallel port adapter to go in your PC?
10:15 PM Tom_L: pink_vampire, figure out where the play is and work from there
10:16 PM rtagro: @Rab i need both
10:18 PM rtagro: my laptop dont have paralle port, could i use those usb to parallel ?
10:19 PM pink_vampire: Tom_L: it is from the bearing
10:21 PM jdh: I assume a double row acb could be bi-directional, but I've never used one.
10:22 PM rtagro: why doesnt linuxcnc in genral dont work with usb ? its 2019!
10:25 PM pcw_home: LinuxCNC normally requires real time I/O, something difficult to do with USB
10:27 PM flyback: <pink_vampire> my Y axis is dead
10:27 PM flyback: TWSS?
10:30 PM pink_vampire: I have an idea
10:30 PM CaptHindsight: rtagro: you don't need USB or LPT for LCNC
10:31 PM CaptHindsight: it's 2019 you can use PCIe or ethernet :)
10:31 PM pink_vampire: https://i.imgur.com/ZB1IY9i.png
10:32 PM pink_vampire: what do you think about that, using 2 angular contact bearings back to back with shim on the outer section and preload the inner section with the nuts
10:33 PM pink_vampire: jdh: Tom_L^
10:45 PM Tom_L: the bearing you have is the one intended for it right?
10:45 PM Tom_L: check that it's not installed backwards
10:47 PM pink_vampire: Tom_L: the bearing that I have now is double row
10:47 PM pink_vampire: there is now direction to the bearing
10:47 PM CaptHindsight: https://mk0cnccookbookgxcner.kinstacdn.com/wp-content/uploads/2017/08/ACBearingBlock-1.jpg
10:49 PM pink_vampire: CaptHindsight: did you saw my drawing? https://i.imgur.com/ZB1IY9i.png
10:51 PM Tom_L: i don't think it's necessary to change your bearing style
10:52 PM Tom_L: just fix the one that's in it
10:52 PM CaptHindsight: https://www.damencnc.com/userdata/artikelen/bk12-fixed-ballscrew-support-c3-quality-111225-en-G.jpg
10:56 PM pink_vampire: CaptHindsight: in the drawing you send the nut do nothing, is press the inner section on the already close geometer bearings
10:57 PM Tom_L: it holds the shaft snug against the inner race
10:58 PM Tom_L: and in his last post (3) keeps the outer race snug in the housing
10:59 PM Tom_L: and if they don't, you need to shim one or the other so they do
10:59 PM pink_vampire: but there is no gap
11:37 PM rtagro: CaptHindsight, my laptop dont even have ethernet port
11:40 PM CaptHindsight: real time laptop, good luck
11:40 PM CaptHindsight: sort of like cool heat and tall shorts
11:44 PM rtagro: lol
11:53 PM rtagro: im planning on getting old desktop but it doesnt have Parallel Port. but if i get pcie to Parallel Port, will that work?
11:54 PM rtagro: has any one use these cards https://www.ebay.com/itm/1pcs-5-Axis-CNC-Breakout-Board-For-Stepper-Driver-Controller-mach3/201414938686?epid=23018351668&hash=item2ee544103e:g:GTkAAOxyBjBTWMPR
11:54 PM CaptHindsight: if the PC passes the latency test
11:56 PM rtagro: CaptHindsight, what do you mean passes latency test ? sorry for noob question
11:57 PM CaptHindsight: http://linuxcnc.org/docs/html/install/latency-test.html
11:59 PM rtagro: thanks