Quote:
Originally Posted by Lee Roberts
Thanks Lee - relative tramming!
Printable View
Quote:
Originally Posted by Lee Roberts
Thanks Lee - relative tramming!
Assuming your going to be laying the glass on the bed, placing indicator base on this, then rasing and lowering the Z, adjusting the spindle as you travel to keep "0" ?Quote:
Originally Posted by MikeyC38
yes. Swinging the dial indicator left and right 180 degrees in the "Y axis" (short axis) direction, then front and back 180 degrees in the "X axis" (long axis) direction.Quote:
Originally Posted by Lee Roberts
Hi everyone
Finally done the first cuts with the machine! I have a video posted on Youtube https://www.youtube.com/watch?v=TvKm...ature=youtu.be which shows the baseboard being levelled. I'm using a 1 1/8" (29mm) diameter bottom clearing bit @12000 rpm and 3000 mm/min feed and first pass at 0.75mm and finishing pass at 0.25mm
I did'nt realise how much dust would be created, so the next job will be the creation of a dustboot for the spindle and a cyclone filter system. I initially used my trusty Aldi ash can filter, but it soon got clogged up with the fine MDF dust. It will work better behind a cyclone system.
Also, I hooked up the Huanyang VFD to Mach3 using the VFD plugin by Sebastien here
This worked first time, but when I tried cutting in anger I got and e-stop near the end of the first cut, so had to abandon it and set the spindle by hand. I'm sure the problem is due to some electrical noise somewhere so need to add an EMI filter to the VFD and earth the shield on the RS485 connection to PC running Mach3
Overall really pleased, but still spending money on this.
Thanks to all you have advised me over the years (Jazz, Jonathan, John, Lee and others) and those who have encouraged me in the build (routercnc, kingcreaky, clive s and others) . If I've missed you off the list - i'm sorry - your help has been appreciated! - I'll have more to show in the coming weeks
Regards
Mike
😁 nice one Mike, always good seeing the first chips (or dust in your case!!!) from a machine...looking forward to seeing more. You do know that you'll be constantly doing more bits to it don't you? I've just made an ali corner finder to go with my touch plates, next is dust shoe mk2 then a better mist/fog nozzle system, then web cam in dust shoe....it goes on 😁
Sent from my HUAWEI VNS-L31 using Tapatalk
Poser.!!. . .:cool:Quote:
Originally Posted by njhussey
:toot: Well done Mikey know it's been long slog but you done it correctly and you'll soon start reaping the bennifits.:toot: (go easy on DOC else you'll be replacing beds every other week.!)
Regards the false E-stop have you Earthed the Machine Frame.?
Hi Jazz
Yes it has been a long slog as you and I well remember! Thanks for the tip on earthing the machine. Should I earth it to the star earth I have in the control box (all shielded cables from machine to control box star earthed) or run it back to the mains earth?
Regards
Mike
Thanks Neil. Ideally I would like to get the proximity homing switches working :upset: so that I can get tool changes consistent and touch plates. These items improve productivity.Quote:
Originally Posted by njhussey
Cheers - Mike
Yes to the Star point.Quote:
Originally Posted by MikeyC38
Thanks Jazz I'll try that first before getting the EMI filter
Sent from my KFTT using Tapatalk
That's the best thing I've done on my machine, makes life so much easier and jobs quicker! What BOB/controller you using?Quote:
Originally Posted by MikeyC38
Sent from my HUAWEI VNS-L31 using Tapatalk
I am using the Zapp BoB ZP5A-INT and the NPN proximity switches as suggested by Jazz some time ago. I posted this a couple of months ago, but could'nt get it working. I have a separate 24v PS for the relay safety system which I also wanted to use to power the prox switches. But if you or Jazz can give me some inspired thoughts I would be gratefulQuote:
Originally Posted by njhussey
Regards
Mike
Hi Jazz, manage to get rid of the noise by doing everything you said and using an IEC EMI filter socket for the mains input to the control box, as well as using a ferrite coil around the RS423 Modbus serial connection between the Mach3 PC and the VFD. Now it runs reliably. Got all the bits for my dust filter and about to cut the dust shoe from 10mm perspex. Will post the design and pics soon.Quote:
Originally Posted by MikeyC38
Cheers.
Mike
Dust extraction should be a priority especially if you intend to machine MDF. It uses urea-formaldehyde as a bonding agent and the formaldehyde is a proved carcinogen besides other harmful effects.
Just watched your video and it doesn't look good to me with all that fine dust.
The cyclone cones you get off eBay are good, just hooked one up to my machine and works brilliantly, I'd highly recommend one Mike.Quote:
Originally Posted by MikeyC38
https://uploads.tapatalk-cdn.com/201...266bf687f8.jpg
What you see in the bottom of the CamVac (virtually nothing) is after machining plastic for an hour and hoovering wood dust up off the floor.
Sent from my HUAWEI VNS-L31 using Tapatalk
Hi Paulus & NeilQuote:
Originally Posted by paulus.v
Great minds do think alike and you are both perfectly correct. Since the video I have'nt done anymore cutting because I realised with the amount dust created just by surfacing, I needed a filtration system. So I ordered a cyclone off Amazon for an amazing price and lots of hose as shown below. I have an old VAX (2000 watts before the EU restrictions!!!) which should do the trick. Also making a dust hood for the spindle based on a design I found on Bjorn Makes YouTube Channel here
Attachment 20537
Hi Guys
Following on from the last post, I built my cyclone dust collector, and promptly crushed the barrel, when I put my hand over the end of pipe to check the suction!. Using a hot-air gun, I manged to un-collapse it and restore it's shape. Hunting around on the web, I found a design for a pressure relief value (here) and this design here using a 40mm PVC straight coupler and a neodymium magnet and it works brilliantly!
see pic Attachment 21321
Also, I have started some test cuts for the dust hood (see previous thread for youtube link!) and really pleased with the accuracy of the machine. The inner ring is 70mm dia +- 0.01mm!!
There are a couple of toolpath issues to sort out, but the code from Estlcam worked first time!
Attachment 21322
I post a video on Youtube later.
Now just have to get the proximity switches working and we are fully done and ready to make chips!
Regards
Mike
Hi Guys
Sorted out the problem with the toolpath by upgrading to Estlcam v10 and defining the operations in a different order.
The photo attached shows the final dusthood cut from 10mm perspex sheet using a single flute carbide cutter running at 12,000 rpm, 600 - 900mm/min feed and doc of 1-2mm. Took around 1hr for the all operations. The link to Youtube shows the last operations. I'm pleased with the finish of the pocketing. Now to get on with doing some real projects!
Kind Regards
Mike
Nice cut! It looks very similar with my first dust shoe. But now, mine have diameters of 15 to 25 cm calculated for different tools dia so that the hair will not be cut by the tool at any depth. And also dependant of the hair length/ depth of cut.
Thanks Paulus - here is a picture of it fitted. My first CNC project on this machine!Quote:
Originally Posted by paulus.v
The proud builder with his machine....
Attachment 23745
Well done that man.! . .:toot:Quote:
Originally Posted by MikeyC38
Cheers Jazz - and again if it was'nt for your good advice and willing help I would'nt have got it working as well as it does!
Well done Mikey looks great !
Plus one:toot: It's always nice to see another build come to completion :encouragement:
Thanks Guys for your kind remarks. Still struggling to get the NPN proximity switches working in my setup. I will do a wiring diagram and try again to get some help!
Yes stick a diagram as how you have it wired including what voltage you are using etc.Quote:
Originally Posted by MikeyC38
This video seems pretty good:Quote:
Originally Posted by MikeyC38
https://www.youtube.com/watch?v=F7BjZElStfQ
Regards,
Wallace
Nice work, great machine!
Thanks for the video.. now Im even more confused ;)
Skickat från min SM-G955F via Tapatalk
Nice thread and a great machine!!!
I have another video here on youtube showing the re-levelling of the base board but this time with the dust hood fitted and showing the use of cyclone filter. I have an old (2kw) Vax 2000 which does the job perfectly. A big difference compared to a year ago when I first levelled the base board (see here)
I've got the same set up (but with a CamVac instead of a Vax) and the cam vac only ever gets anything in it if the cyclone is full [emoji106][emoji4]
Sent from my HUAWEI VNS-L31 using Tapatalk
Thanks Neil - I'll replace the Vax at some stage after I've used the machine a bit more. Right now stuck with having to do house diy prepping for my daughter's wedding. After that's done then back to CNC to finally do the following:
1. Get NPN Homing switches working..
2. Wire VFD into safety switch system. I've read somewhere that you should'nt cut the power to the VFD by switching the mains off but by send a stop signal to the VFD. Currently using Modbus-type communication plugin on Hunyang VFD for stop, start and speed control.
Quote:
Originally Posted by MikeyC38
My wife was watching the Royal wedding recently and there was a comparison made to the dress worn on the previous Royal wedding. She said the other dress was much better and asked my opinion. ‘They are all great- just variations on a theme’. Apparently this was not the right answer.
2) Yes, send stop signal to the VFD. My understanding is that the spindle will spool down and the back EMF could damage it if power is removed. You can use a delay timer if you really want to cut power after a second or two. But for home DIY machines this is not commonly done.
I agree with you on item 1 - That's why I have never bought clothes for my wife - I give her the money to make her own choice because whatever I chose it would still be wrong!Quote:
Originally Posted by routercnc
Regarding item 2 I have'nt got any ideas at the moment how to do this so will look through the forum for some ideas. My initial thoughts was to do something through the 0-10v input but as my VFD is using Modbus then this might not work..