Search found 40 matches

by lsteele
Tue 20 Nov , 2018 11:10 am
Forum: Triac
Topic: Triac lubrication - BP: CS 68 alternative
Replies: 1
Views: 189

Re: Triac lubrication - BP: CS 68 alternative

To answer my own question, it seems like the Magna 68 is the same spec: https://www.broughtonlubricants.co.uk/bp-energol-cs-68
by lsteele
Mon 19 Nov , 2018 20:13 pm
Forum: Orac
Topic: Disassembling Orac spindle
Replies: 0
Views: 534

Disassembling Orac spindle

Hi, Despite relubricating my Orac spindle bearings I've been getting poor running (squeaking, slow to start) recently and the bearings feel a little rough. I decided to disassemble the spindle to inspect the bearings and probably replace them. I've taken the pulleys, nuts etc off the rear of the spi...
by lsteele
Mon 29 Oct , 2018 16:32 pm
Forum: Triac
Topic: Triac lubrication - BP: CS 68 alternative
Replies: 1
Views: 189

Triac lubrication - BP: CS 68 alternative

Hello,

I know the Triac is supposed to be lubricated with BP: CS 68, but I have a ton of Magna BD 68 and also Hyspin AWS 32 lying around. Could either of these be used safely as an alternative?

Thanks,

Luke
by lsteele
Sat 20 Oct , 2018 11:10 am
Forum: Post Processors
Topic: Fusion 360 CAM - curves made up of straight lines
Replies: 0
Views: 894

Fusion 360 CAM - curves made up of straight lines

Hi, I'm using Fusion 360 with the Denford post processor and a Denford Triac mill, using VR milling 5. I'm getting lots of faceting (i.e. curves made up of multiple straight lines) in my g-code. I've attached a small g-code excerpt at the bottom of this email. I can also see the results of this in t...
by lsteele
Sat 30 Jun , 2018 16:01 pm
Forum: Triac
Topic: Triac spindle stalled, now won't start!
Replies: 17
Views: 1880

Re: Triac spindle stalled, now won't start!

Hi, Thanks for the tip. I have been having more luck since I posted my questions by using coated cutters, and also ripper cutters, and at higher RPMs. I'm used to using manual machines where you do do cuts like that at lower rpm. Out of interest what do you do for tool holding? I can only hold threa...
by lsteele
Thu 22 Feb , 2018 22:41 pm
Forum: Orac
Topic: Orac steppers going spare
Replies: 2
Views: 461

Re: Orac steppers going spare

Hi Andy,

I'm afraid they're gone. I was fed up with looking at them, and that was my 2nd attempt to get rid of them so I assumed they were of no use to anyone.

Cheers,

Luke
by lsteele
Wed 20 Dec , 2017 18:30 pm
Forum: Triac
Topic: Triac PC Emergency Stop
Replies: 7
Views: 3166

Re: Triac PC Emergency Stop

Out of interest, is it possible to add a feed override pot to a machine without one? Where would you wire it up?

Cheers!
by lsteele
Tue 28 Nov , 2017 21:58 pm
Forum: Orac
Topic: Orac steppers going spare
Replies: 2
Views: 461

Orac steppers going spare

Hello, I have a couple of orac steppers that are left over from my refit. I'll give them (free) to a new home, but you have to come and get them from me. I'm in Acton, but could also take them with me to work in Reading. FYI I never ran these motors, so I can't say if they're working. Let me know as...
by lsteele
Mon 06 Nov , 2017 10:46 am
Forum: Triac
Topic: Triac spindle stalled, now won't start!
Replies: 17
Views: 1880

Re: Triac spindle stalled, now won't start!

Hi, Steve - Ok, I'll swap for a 10A fast blow fuse. Re the spindle stalling in steel... I checked the motor brushes, although there was a little dust inside (don't know if this is a problem, wiped up what I could), it otherwise didn't look as if there was much brush wear. Also spoke to Sprint Electr...
by lsteele
Fri 27 Oct , 2017 10:39 am
Forum: Triac
Topic: Triac spindle stalled, now won't start!
Replies: 17
Views: 1880

Re: Triac spindle stalled, now won't start!

Up to about 1000rpm. Could you recommend a feed / speed for this? I tried the same operation on my manual machine (1kW @ 1400rpm) and it didn't flinch when I plunged. I was under the impression the Triac had a closed loop controller for the spindle drive, so it would just increase motor torque if th...
by lsteele
Thu 26 Oct , 2017 23:10 pm
Forum: Triac
Topic: Triac spindle stalled, now won't start!
Replies: 17
Views: 1880

Triac spindle stalling!

I phoned Denford and they recommended a 6.3A slow blow fuse, which is what I've replaced it with. I was able to complete my drilling operation without any difficulty, but I'm now finding that the spindle stalls when I attempt to pocket in mild steel (the fuse isn't blowing though). I'm pocketing a 1...
by lsteele
Tue 10 Oct , 2017 20:45 pm
Forum: Triac
Topic: Triac spindle stalled, now won't start!
Replies: 17
Views: 1880

Re: Triac spindle stalled, now won't start!

Yeah it was fuse F1. Don't know how I missed that, must have been rushing!

It's only 3.15A though - is that right? One of the electrical diagrams has it at 6.3A. That said I don't know if it's the correct version of the drawing for my machine though.

Thanks,

Luke
by lsteele
Fri 06 Oct , 2017 9:21 am
Forum: Triac
Topic: Triac spindle stalled, now won't start!
Replies: 17
Views: 1880

Re: Triac spindle stalled, now won't start!

Thanks Moray. I won't have a chance to do this till next week now, but I'll report back what I find.

Luke
by lsteele
Thu 05 Oct , 2017 23:07 pm
Forum: Triac
Topic: Triac spindle stalled, now won't start!
Replies: 17
Views: 1880

Re: Triac spindle stalled, now won't start!

Hi Moray,

I tested all the fuses I could see my multimeter, including the one on the motor drive. Yes, a relay clicks when I turn on the drive. The two LEDs on the drive don't light up at all.

Cheers,

Luke
by lsteele
Thu 05 Oct , 2017 21:51 pm
Forum: Triac
Topic: Triac spindle stalled, now won't start!
Replies: 17
Views: 1880

Triac spindle stalled, now won't start!

Hello all, My triac spindle stalled today while plunging too aggressively into steel. I was hovering over the pause button so stopped the machine straight away, within a fraction of a second. Went and re cam-ed the operation, came back to run it again and and the spindle wouldn't start. It's a Triac...
by lsteele
Wed 04 Oct , 2017 11:41 am
Forum: Triac
Topic: Power drawbar upgrade
Replies: 11
Views: 1870

Re: Power drawbar upgrade

Dan, did you ever do this? Are the parts mentioned all that's required, and how easy / difficult was the conversion?

Thanks,

Luke
by lsteele
Thu 01 Jun , 2017 15:33 pm
Forum: Orac
Topic: Turning parts with features on reverse
Replies: 9
Views: 2154

Re: Turning parts with features on reverse

David, it sounds like you've done this before? Two more questions spring to mind - can the 3-jaw hold a large enough diameter for a backplate? And I read somewhere that it's difficult to get the carriage close enough to the spindle to machine the backplate on an Orac - any truth in this (haven't tri...
by lsteele
Sun 28 May , 2017 11:22 am
Forum: Orac
Topic: Turning parts with features on reverse
Replies: 9
Views: 2154

Re: Turning parts with features on reverse

Hi Pete, Thanks for that suggestion. So let me just try and flesh out some of the details because I've never tried to machine a backplate. As I see it I've have to chuck the material for the backplate, then machine the taper with the maximum OD at or fractionally under the desired diameter. Then I'd...
by lsteele
Sat 27 May , 2017 12:17 pm
Forum: Orac
Topic: Turning parts with features on reverse
Replies: 9
Views: 2154

Re: Turning parts with features on reverse

Pete -

Well, I've looked around at various times and it seems like no one is quite sure, although I have ideas about making a part to fit, it would entail quite a lot of trial and error.

e.g. viewtopic.php?f=43&t=2890&start=20

TDIPower -

Will check
by lsteele
Fri 26 May , 2017 10:11 am
Forum: Orac
Topic: Turning parts with features on reverse
Replies: 9
Views: 2154

Turning parts with features on reverse

Hello, I'm trying to work out the best (or any) approach to tackling parts which can't be turned from one end only. I'm used to manual turning on machines where I had collet and 4-jaw chucks, so if I needed to machine from the other side I could take the part out and remount with confidence of conce...