#linuxcnc Logs

Jul 12 2017

#linuxcnc Calendar

12:11 AM MrHindsight: me want http://www.ebay.com/itm/GIDDINGS-LEWIS-MILL-SIEMENS-100HP-5000RPM-SPINDLE-MOTOR-1PH7186-3NE30-0CA9-/172477592066
12:42 AM Skullworks: What on Earth for?
12:42 AM pink_vampire: ?
12:43 AM Skullworks: MrHindsight wants a 100HP spindle motor
12:43 AM tjtr33: hmm need big spindle for it and big iron behind that
12:44 AM Skullworks: very big
12:45 AM pink_vampire: just 77kw
12:45 AM Skullworks: I ran a Mori Seiki SV50 with a 30hp. It would reverse from M3S10000 to M4S10000 in 2.3 seconds
12:46 AM Skullworks: Now the servos on that baby were 9.2HP
12:46 AM pink_vampire: how much it cost?
12:47 AM Skullworks: which?
12:47 AM pink_vampire: your machine
12:48 AM Skullworks: Think it was about $279K - without the tooling.
12:49 AM pink_vampire: on a lease?
12:49 AM Skullworks: but it did have the 1000PSI through the tool DIN coolant flange option.
12:50 AM Skullworks: On a 5 year lease option with $10K buyout.
12:50 AM Skullworks: great machine
12:51 AM pink_vampire: is this your first machine?
12:51 AM Skullworks: I would have taken it home and put it in my shop - but that baby requires 140Kw\
12:52 AM IchGucksLive: Moring from Germany
12:53 AM Skullworks: No - this was the next to last machine my uncle bought for his shop - I just got called in to program the really crazy stuff.
12:53 AM IchGucksLive: pink_vampire: are ther also firer around your living place
12:54 AM pink_vampire: I'm working now on the part list for replacing my rails
12:54 AM IchGucksLive: Hwin pink_vampire
12:54 AM pink_vampire: what about thk?
12:54 AM IchGucksLive: or going for a full 300USD 1m cnc rail set at ballbearing
12:55 AM IchGucksLive: pink_vampire: http://stores.ebay.de/rattmmotor88/
12:56 AM pink_vampire: hiwin is made in china?
12:56 AM IchGucksLive: sometimes
12:58 AM IchGucksLive: the prices for the CNC parts are dropping like waterfall
12:58 AM IchGucksLive: since feb the railset dropped from 320USD to 230
12:59 AM IchGucksLive: now Closed loop 3set 8Nm are at 450 USD
12:59 AM IchGucksLive: this on a 5i25
12:59 AM pink_vampire: I know there is several grades in the rails
12:59 AM IchGucksLive: you will be making steel parts
12:59 AM IchGucksLive: pink_vampire: but more in the Ballbearing
01:00 AM pink_vampire: https://lh3.googleusercontent.com/aQ86dB3MD6f1tqBPSxoyBiFEsE-94uzkcQArqjBzizX1z3kr7B6D1vCPuoFL1E6cMhXvU_swZa_oQP1dwE5xjgQgk0q80rV2NLmVIrqzWW-Ci_FdEHBe0W3w3q9c4YcggfjHcBydla3z5LB_F0zlu3TiJfXxO6_y1NdR0Ce-mmB3-a-QE8EICDw6q7EvcmJ10L-lYZYYHCHhEm91oJtYcNVWMEip8ajkRzC6zo4UdONv7BdMEO9wXrWVmXwny2vffpHW6e5NQw4MYyX79VynCku0ERXJzMjGLDkB-spcrHwRsdAlwiEOTQ-0Uvvnq_Btl5eTIU4s18-PaQhZ6eJ2A-iDSxIsigkAbB6wzSF1pZcY02
01:01 AM Skullworks: Yup - Price drop on ballscrews has been shocking over last 2 years.
01:01 AM pink_vampire: this is "hiwin" rails and blocks. and I can't find the model on the hiwin website
01:02 AM Skullworks: I can now use ball screws cheaper than quality acme
01:03 AM pink_vampire: do you think the rails in the picture, is fake hiwin?
01:03 AM IchGucksLive: the rolled ballscrew got up to 0,5mm on 70cm we messured on a C1200 500K Hermle
01:04 AM IchGucksLive: pink_vampire: isent there a shop nearby
01:05 AM pink_vampire: http://www.cnczone.com/forums/benchtop-machines/220700-hiwin-linear-guide-rails-question.html
01:05 AM pink_vampire: talk about fake hiwin
01:12 AM IchGucksLive: you need to set a price limit and go for the best
01:12 AM IchGucksLive: like http://www.ebay.de/itm/EU-6Pcs-Square-Linear-Rail-Guide-L-400-700-1000mm-Ballscrew-1605-400-700-1000mm-/162585641166
01:12 AM IchGucksLive: look in his US based Shop
01:12 AM IchGucksLive: it is and will be shure a 500% improve to what you got
01:12 AM pink_vampire: i want to get them from hiwin direct
01:13 AM IchGucksLive: im off
01:15 AM Skullworks: Me too - long day, too much shopping, everyone sending sales adds to pull a "me to" on Prime Day.
01:15 AM * Skullworks is /quit
01:41 AM absynth is now known as dan2wik
02:10 AM Deejay: moin
02:10 AM pink_vampire: hi Deejay
04:26 AM pink_vampire: hi
05:11 AM XXCoder: hey pink_vampire
05:34 AM pink_vampire: hi XXCoder
05:34 AM XXCoder: whats up
05:34 AM pink_vampire: i'm fine
05:35 AM pink_vampire: working on some part
05:36 AM jthornton: mornig
05:37 AM pink_vampire: hi jthornton
05:37 AM XXCoder: cool. today was okay work day
05:38 AM XXCoder: office mill worked fine for 14 parts then it decided to break down so i moved to old fadal and made 23 of different part.
05:41 AM jthornton: do you have to deburr the parts?
05:41 AM XXCoder: usully no
05:41 AM XXCoder: but of course need to deburr ID surfaces for next stage
05:41 AM XXCoder: otherwise crap parts
05:48 AM XXCoder: jthornton: for example if part has burr on cut surfaces that will be used to hold in accurate place for second part, it might have issues
05:48 AM XXCoder: otherwise usually not deburr parts since we have 2 guys that deburr everything
05:49 AM jthornton: ah just wondering
05:50 AM XXCoder: *next op
05:51 AM pink_vampire: i want to get auto drain
05:57 AM XXCoder: auto drain?
06:08 AM pink_vampire: for the compressor
06:08 AM pink_vampire: XXCoder: ^
06:11 AM XXCoder: to drain water out of air tank?
06:17 AM pink_vampire: correct
06:18 AM XXCoder: cool. one we have has bottom valve that can press and it will spray water out
06:45 AM -!- #linuxcnc mode set to +v by ChanServ
07:51 AM jthornton: yea my crickets are in Hazelwood MO
07:52 AM XXCoder: <crickets>
07:52 AM XXCoder: ;)
07:52 AM XXCoder: they are very symbol of awkward silence, careful with em ;)
07:53 AM jthornton: these don't have wings yet so very quiet crickets
07:53 AM XXCoder: lol ok
07:54 AM XXCoder: in least its not those bugs
07:54 AM XXCoder: apparently they're so loud that they make noise under water and people still can hear em
07:55 AM XXCoder: (even after 99% loss at water-air transition)
07:57 AM jthornton: I plan on holding a few couples for breeding
07:58 AM jthornton: one more set of curls and shower time
11:26 AM boddenkreuzer: Hi, today I assembled my home switches and while testing the repeatability, it came up that my finest resolution is 0,02 mm
11:27 AM boddenkreuzer: so I changed the increment values in the ini
11:27 AM archivist: stepper or servo
11:27 AM boddenkreuzer: stepper
11:27 AM archivist: then step resolution is your limit
11:27 AM boddenkreuzer: is there the possibility to have alias names for the increments in the axis gui?
11:30 AM boddenkreuzer: the reason is, that its not exactly 0,02
11:32 AM archivist: physical step size, is still physical step size whatever you do, while you can use microstepping that might not do what you think it will
11:32 AM archivist: are you measuring the .02 or looking at axis
11:34 AM boddenkreuzer: At the moment I write the calculated distance per microstep to the ini, but that looks strange. I would like to see 0,02 and moving the 0,02xx
11:36 AM archivist: the mechanical step size is what you should base your numbers on not a "nice" number
11:37 AM boddenkreuzer: what exactly happens, when I try to jog 0,03?
11:38 AM archivist: when you program the machine in gcode you dont have to think about what is in the ini, linuxcnc will scale to the units you chose and go to the nearest step it can
11:39 AM archivist: here having a coarse screw or stepper will make things difficult
11:40 AM roycroft: microstepping will result in a significant loss of torque and accuracy
11:40 AM archivist: and that
11:41 AM roycroft: it's counterintuitive, but increasing the resolution with microstepping will actually decrease accuracy
11:41 AM archivist: I have measured actual moves on my machine and you can see some of the affects
11:42 AM boddenkreuzer: the measured accuracy is quite good. and a loss of torque is not a problem at the moment
11:42 AM boddenkreuzer: But I need microsteps, because of the resolution
11:43 AM boddenkreuzer: I have a rack and pinion drive with only a small gear
11:43 AM archivist: what are you cutting?
11:44 AM archivist: .02mm with rack and pinion seems a tall order
11:44 AM boddenkreuzer: mostly wood and plastics (GFK)
11:46 AM archivist: shrinkage and temperature and backlash in the rack may all be larger than the .02mm
11:46 AM boddenkreuzer: I have a quite good antibacklash drive
11:47 AM boddenkreuzer: anyway, thats the machine Im sitting in front of...
12:05 PM IchGucksLive: hi from germany
12:05 PM Deejay: hi there
12:06 PM Deejay: requesting weather report :D
12:07 PM IchGucksLive: wet and windy
12:10 PM IchGucksLive: boddenkreuzer: is the mashine homing correct
12:10 PM boddenkreuzer: no, just assembled the switches and tested them
12:11 PM boddenkreuzer: I measured the whole machine
12:13 PM Deejay: IchGucksLive, yeah, here, too
12:13 PM IchGucksLive: morgen wird es schön
12:15 PM BubbleRep: so they claim
12:29 PM roycroft: morgen, morgen, immer morgen
12:58 PM IchGucksLive: Deejay: now i got clear sky no cloud no wind within 15min
12:58 PM IchGucksLive: sun is out
01:05 PM Loetmichel: maan, driving two different cars alternating makes for shitty parking... just got my Opel Omega from the mechanic where i parked it last week when i got my BMW 318i convertible back from him... took me 4 tries to get the Omega reversed into the not so short (parallel) parking slot. doesent help either that the BMW is stick shift and the Omega is automatic...
01:07 PM Deejay: IchGucksLive, now you are in the eye of the thunderstorm ;)
01:07 PM Deejay: or hurricante
01:07 PM Deejay: -t
01:08 PM IchGucksLive: that means i need to go to the telescop tonight
01:08 PM Deejay: to do what? ;)
01:15 PM IchGucksLive: talking weer stuff
01:16 PM IchGucksLive: Black clouds all over
01:27 PM MrHindsight: it's been raining cats and dogs all night and morning here
01:30 PM Loetmichel: it has been here as well. since sunday.
01:30 PM Loetmichel: more correctly saturday evening
01:30 PM MrHindsight: suppose to stop in 31 minutes and then go up in temp by 20 deg F
01:32 PM MrHindsight: Loetmichel: did you row to work today? :)
01:33 PM Loetmichel: no. but i took the time to get the station wagon back from the mechanic where i parked it when i got my convertible back last week
01:33 PM Loetmichel: its nicer to drive something with a bit of sheet metal on the top when you have heavy rain
01:34 PM Loetmichel: i dont like to commute to the company in the morning and arrive there with a wet behind...
01:38 PM MrHindsight: sometimes I get up early and walk to work, turn around and walk a few steps and go back to bed
01:39 PM Loetmichel: i have 12km one way... not really feasible to walk
01:39 PM Loetmichel: even the bicycle takes me nearly an hour because of so many forest roads
01:47 PM skunkworks: MrHindsight, it has been quite a summer so far. Had hail last week - across town they got baseball sized hail
01:48 PM skunkworks: we got quarter sized..
01:52 PM roycroft: have you been defrocked, mrhindsight?
01:54 PM MrHindsight: roycroft: some people say I'm still full of frock :)
01:57 PM TurBoss: hello
01:57 PM TurBoss: I have a db25-1205 BOB
01:57 PM TurBoss: https://forum.linuxcnc.org/media/kunena/attachments/18846/BOB1205schematic.pdf
01:58 PM TurBoss: I have wired the output P1 to a 12v relay
01:58 PM IchGucksLive: TurBoss: why not going for a 5USD ready made
01:58 PM pcw_mesa: After move just 1 mile from work so walked today (with dog)
01:58 PM IchGucksLive: including all safty
01:59 PM TurBoss: I bought that
01:59 PM TurBoss: 5 $
01:59 PM TurBoss: With the multimeter I can read 12V on P1
02:00 PM IchGucksLive: there shout only be 5V
02:01 PM TurBoss: oh
02:02 PM TurBoss: J1 is not connected
02:02 PM IchGucksLive: http://www.ebay.com/itm/CNC-MACH3-Router-Machine-Motor-Interface-Breakout-Board-Auto-Check-Instrument-W-/222303309576
02:02 PM IchGucksLive: this one is best to go
02:02 PM IchGucksLive: PC5V PC ground for output
02:03 PM IchGucksLive: ans 12-24 V to the BOB to get the inputs
02:03 PM IchGucksLive: and of you go
02:03 PM IchGucksLive: 3Axis http://heimwerkermarkt-tretter.de/3achs_elek
02:03 PM TurBoss: http://i.ebayimg.com/images/i/320857237968-0-1/s-l1000.jpg
02:03 PM TurBoss: this is mine
02:04 PM IchGucksLive: 4 achsis http://heimwerkermarkt-tretter.de/4achs_elek
02:04 PM IchGucksLive: 5 Axis http://heimwerkermarkt-tretter.de/ef_el.jpg
02:05 PM IchGucksLive: im off Gn8 Sorry its late here
02:10 PM archivist: TurBoss, yours looks like one of the types opto isolating its outputs, where the drive also opto isolates you can get insufficient drive current to the step/dir
02:11 PM TurBoss: ok
02:11 PM TurBoss: thanks
02:12 PM archivist: if you are an electronics engineer you can find the extra series resistor you dont need then short it to get the correct current
02:12 PM archivist: I dont know what stepper drivers you are using
02:13 PM TurBoss: I'm wirin a relay
02:13 PM TurBoss: this is not the main board
02:14 PM TurBoss: so the 1k Resistor is whar i need to sort?
02:14 PM TurBoss: i can try
02:14 PM archivist: the outputs are open collector so ok
02:14 PM archivist: no need
02:14 PM TurBoss: oh
02:16 PM archivist: so technically that board should never be used for 12 relay drive
02:16 PM TurBoss: ok
02:16 PM TurBoss: :(
02:16 PM archivist: you can add an external transistor to buffer
02:16 PM TurBoss: hehe
02:16 PM TurBoss: k
02:16 PM TurBoss: fine
02:17 PM archivist: there is usually a way around minor problems
02:21 PM archivist: the 1k pull up is probably ok to drive an npn transistor base (emitter to ground) collector to relay, a diode across relay coil something like http://www.electronics-tutorials.ws/transistor/tran12.gif
02:21 PM archivist: from this page http://www.electronics-tutorials.ws/transistor/tran_4.html
02:24 PM TurBoss: okay thank you
02:26 PM TurBoss: archivist : Can I remove the 1k resitor the apply 12 to relay and the ther side to P1?
02:26 PM TurBoss: *then
02:27 PM archivist: the opto wont be rated for relay current, check datasheet
02:27 PM TurBoss: relay has the 1n4004 diode in place + a led
02:27 PM TurBoss: k
02:27 PM TurBoss: ok
02:28 PM TurBoss: woow to low
02:28 PM archivist: 50ma ?
02:29 PM TurBoss: http://www.everlight.com/file/productfile/el817.pdf
02:29 PM TurBoss: can't find the correct info
02:30 PM archivist: good guess 50ma max collector current on the opto
02:30 PM TurBoss: will drive a transistor
03:19 PM pink_vampire: TurBoss: use the sharp ones
04:25 PM jb_fc: hello
04:26 PM jb_fc: Is there anybody OUT THERE?
04:26 PM pink_vampire: yes
04:27 PM jb_fc: do you know about the para port
04:27 PM pink_vampire: yes
04:28 PM jb_fc: cant see any signals going back to EMC; like ESTOP
04:28 PM XXCoder: jb_fc: we don't know. we haven't found any intellegent life out there besides on earth.
04:30 PM TurBoss: archivist : worked like a charm
04:30 PM jb_fc: steppers move under stepconfig but thats all
04:30 PM TurBoss: bc337
04:36 PM TurBoss: bye
04:57 PM Deejay: gn8
05:12 PM Simonious: o/ hi all
05:14 PM -!- #linuxcnc mode set to +v by ChanServ
05:39 PM Crom: yo
05:41 PM andypugh: A friend has moved the Phillipines. He just had an electric shower fitted. Oh my!: https://imgur.com/LRTuEmW
05:42 PM Tom_itx: qualified electrician did it ehh?
05:43 PM pcw_mesa: That will get you jumping in the morning
05:43 PM DaViruz: even when correctly installed those devices seems extremely dubious to be
05:43 PM DaViruz: me
05:45 PM sync: nice, non grounded
05:55 PM MrHindsight: the electricity is above the plumbing
05:55 PM MrHindsight: water only flows downhill
05:55 PM MrHindsight: so the two won't get mixed
05:56 PM MrHindsight: and the power is right there where you can see it, not hidden away behind some wall doing lord knows what
05:57 PM MrHindsight: sync: the ground is via the water pipe
05:57 PM MrHindsight: no loops this way :)
05:58 PM sync: pfffft
05:58 PM DaViruz: through the plastic fittings
05:58 PM MrHindsight: high impedance ground
05:59 PM MrHindsight: so it passes the hi-pot
06:01 PM andypugh: Well, the shower is fine. Perfectly normal Euro-style electric shower. But they run at about 10kW, so that plug is inadequate
06:03 PM andypugh: And the water supply is from the old shower, so you can’t have the hot new shower without extra cold. Or you might be able to have hot and much hotter, if you prefer.
06:03 PM MrHindsight: if it overheats the water is right there to cool it
06:03 PM MrHindsight: or pout out the fire
06:04 PM MrHindsight: it's the Philippines, it doesn't get cold there anyway
06:05 PM MrHindsight: a hot shower is often colder than the outdoor air temp of 55C
06:05 PM MrHindsight: with 168% humidity
06:05 PM MrHindsight: sometimes their air actually has more air in it than water
06:10 PM andypugh: https://www.youtube.com/watch?v=ZwuhFLsowRc is Big Clive taking apart a UK-spec electric shower, to contrast it with: https://www.youtube.com/watch?v=cNjA0aee07k
06:45 PM JT-Shop: crickets arrive tomorrow
06:59 PM JT-Shop: looks like something from the movie One Flew Over the Cuckoo's Nest
07:06 PM Tom_itx: 99 F
07:48 PM BeachBumPete: cool man I am finally gonna get around to using the CNC router mount I made for the Cinci over a year ago... LOL
07:50 PM BeachBumPete: http://i.imgur.com/cULNyne.jpg
07:50 PM malcom2073: Nice! I've been wanting to do that on my mill
07:51 PM BeachBumPete: yeah man I just used it to surface that hunk of pressure treated in there tonight before we got a serious thunderstorm and I shut the machine down so it doesn't go up in smoke
07:53 PM BeachBumPete: had I thought more about it I would have made the bolt hole pattern twice and offset it one hole so I have more adjustment of the position
07:54 PM BeachBumPete: it looks like the 1/4 inch cutter I was using will be easily capable of cutting the entire stock inletting program which is really nice.
07:55 PM BeachBumPete: I had set it up for using Cat40 tooling but I am redoing the program to cut using this setup only much faster feedrates for the smaller shallower cuts
08:03 PM malcom2073: Nice
08:03 PM malcom2073: Yeah I want to do some woodwork stuff, but it is *really* slow to do at 2500rpm
08:05 PM BeachBumPete: I feel your pain but I have 6k which is STILL slow LOL
08:06 PM BeachBumPete: I have been wanting to do some 3d stuff at higher speeds which is why I initially made this thing also had the need to do some engravings with it...
08:13 PM Crom: wooo tempting... http://www.sears.com/all-industrial-tool-supply-5-pc-1-64-3-4inch/p-SPM12253864004
08:13 PM MrHindsight: BeachBumPete: ever have problems if the sawdust hits the sump?
08:13 PM Crom: $120
08:14 PM MrHindsight: ChinaCo like the ones at Shars
08:16 PM MrHindsight: better than nothing, but hardy precise
08:17 PM MrHindsight: I got one once where the shank was so far out of spec it would not fit into the chuck
08:18 PM MrHindsight: and the R8 end was off center
08:18 PM MrHindsight is now known as CaptHindsight
08:22 PM andypugh: I see your 2500rpm and lower you 1000rpm.
08:22 PM malcom2073: Well in your defence, aren't most of your machines 30-40 years older than mine? :P
08:23 PM andypugh: Makes jobs like this really quite tedious: https://photos.app.goo.gl/FgN1I4K95w94fPPv2
08:23 PM malcom2073: Hah ouch
08:23 PM malcom2073: My dad has a speeder rpm multiplier, but it's r8 only so I can't use it
08:24 PM andypugh: That was the core-box for the big casting here, if you were wondering: https://photos.app.goo.gl/iGofwemfw1D5dzVK2
08:25 PM malcom2073: Ah nice, those are the lathe castings yeah?
08:25 PM andypugh: Aye
08:26 PM andypugh: I keep meaning to make a speeder, I have a cunning design in mind.
08:27 PM malcom2073: I feel like you've shared the design here once before
08:27 PM malcom2073: I don't rightly recall though
08:28 PM andypugh: Possibly. Three ball bearings and an eBay ER collet and friction drive?
08:28 PM malcom2073: Using the ball bearings as a planetary?
08:28 PM andypugh: Yes
08:28 PM malcom2073: Yep, I liked it
08:29 PM andypugh: You should make it. Tell me if it works :-)
08:30 PM malcom2073: Lol
08:30 PM andypugh: But, 2am, time to sleep.
08:30 PM malcom2073: Too many other projects. I haven't even cleaned off my mill in months
08:47 PM BeachBumPete: MrHindsight I don't let the sawdust hit the sump lOL
11:06 PM cncnoob: Hey guys, can anyone tell me why these wipers are so expensive?
11:06 PM cncnoob: https://www.motionindustries.com/productDetail.jsp?sku=06624203
11:07 PM cncnoob: They cost almost as much as the ball screw
11:11 PM pink_vampire: https://store.industrialmotiononline.com/OA_HTML/xxthm_ibeCCtpBuyRoute.jsp?pageID=-5702647&item=257667&src_url=http%3A%2F%2Fwww.thomsonlinear.com%2Fen%2Fproduct%2F5702647&qty=1&JServSessionIdrootrvwprdstr1=ny6svx7s21.qBnRq79yqRfMahDMrBrKqAfNr78L/AXMmkbGngTyo79HpRfDpQSIpAjOcx4Qa30K&rcdprod_prod=DgihfrLEpeZbPC0h305YUEOI:S&rcdprod_prod_pses=rcdprod_prod%3DDgihfrLEpeZbPC0h305YUEOI%253AS%7E
11:11 PM pink_vampire: 50% off
11:12 PM pink_vampire: cncnoob:
11:32 PM CaptHindsight: because they can