Search found 14 matches

by EVguru
Sun 31 May , 2020 18:08 pm
Forum: EasiMill / EasiTurn
Topic: Easiturn control cabinet removal
Replies: 1
Views: 5276

Easiturn control cabinet removal

I'm trying to take the control cabinet off the top of my Easiturn. It uses the same kind of mounting collar as my Easimill, with the control cabinet sandwiched between the collar flange and the actual lathe cabinet. There aren't any set screws holding the collar into the lathe, at least none I can e...
by EVguru
Sun 21 Oct , 2018 13:09 pm
Forum: Denford Classifieds
Topic: Orac Chuck jaws
Replies: 2
Views: 6106

Re: Orac Chuck jaws

Sold years ago
by EVguru
Sun 19 Mar , 2017 19:18 pm
Forum: Denford Classifieds
Topic: Orac electronics for sale.
Replies: 4
Views: 4707

Re: Orac electronics for sale.

Still got most stuff, the CRT included. All working before the upgrade.
by EVguru
Tue 14 Feb , 2017 11:08 am
Forum: Orac
Topic: Orac Spindle Speed
Replies: 2
Views: 7489

Re: Orac Spindle Speed

You need simplify your testing. Operate the VFD from its front panel and step the speed up from there. Set the display for motor current and check it isn't getting too high. The motor data plate is for 415v Y or Star connection. It's actually connected in Delta for 240v and you need to multiply the ...
by EVguru
Sun 22 Jan , 2017 13:08 pm
Forum: Orac
Topic: Finally upgraded my Orac
Replies: 3
Views: 8232

Re: Finally upgraded my Orac

There really aren't any remaining parts of the original control electronics. I've really only re-used the main toroidal transformer, bridge rectifiers and smoothing capacitors. You're probably right on the stepper driver number. I chose it mostly on it's voltage rating as my Orac stepper supply meas...
by EVguru
Fri 13 Jan , 2017 12:59 pm
Forum: Orac
Topic: Finally upgraded my Orac
Replies: 3
Views: 8232

Re: Finally upgraded my Orac

Test cut of an eliptical path;

http://youtu.be/AemfoOhKOdo
by EVguru
Fri 13 Jan , 2017 12:49 pm
Forum: Orac
Topic: Finally upgraded my Orac
Replies: 3
Views: 8232

Finally upgraded my Orac

It had been in storage for six years, but a work project justified dragging it out. http://youtu.be/eN3a7OW2F38 Upgrade parts; WEG CFW100 1hp VFD + CFW100-IOAR interface module Wantai DQ680MA stepper drives using original PSU components, Generic breakout board http://www.omc-stepperonline.com/images...
by EVguru
Thu 13 Oct , 2016 13:00 pm
Forum: Denford Classifieds
Topic: Orac electronics for sale.
Replies: 4
Views: 4707

Re: Orac electronics for sale.

The system is a G.S.M Syntel. The CPU board an MP09.
by EVguru
Wed 07 Sep , 2016 12:24 pm
Forum: Denford Classifieds
Topic: Orac tapes
Replies: 2
Views: 3565

Re: Orac tapes

If you're still looking I've got six used Philips tapes, plus one new and sealed Verbatim.
by EVguru
Tue 06 Sep , 2016 12:39 pm
Forum: Denford Classifieds
Topic: Orac Chuck jaws
Replies: 2
Views: 6106

Orac Chuck jaws

I have a spare set of outside jaws for a Yamakawa 3 jaw chuck in like new condition; £45 inc. postage ono.
by EVguru
Tue 06 Sep , 2016 12:28 pm
Forum: Denford Classifieds
Topic: Orac electronics for sale.
Replies: 4
Views: 4707

Orac electronics for sale.

I'm doing a complete refit on an Orac that was in original full working condition and so have more or less everything available other than the power supplies.

Let me know if you'd like anything before it goes up on ebay.
by EVguru
Mon 15 Jul , 2013 16:36 pm
Forum: Orac
Topic: Orac spindle nose taper
Replies: 31
Views: 27353

Re: Orac spindle nose taper

RNR107 wrote:Well, in theory it is possible... But how do you plan on setting the angle of 7.125 deg ???
You could learn what a sine bar is.
by EVguru
Mon 15 Jul , 2013 12:59 pm
Forum: Orac
Topic: Orac spindle nose taper
Replies: 31
Views: 27353

Re: Orac spindle nose taper

As far as I've been able to find out it is a variation of the DIN 55021 spindle nose standard. The standard starts at 3" (size 3), so the Compact 8/Orac is smaller than the definition of the standard. However, the taper is the same on all sizes; 7 degrees, 7 minutes and 30 seconds, or 7.125 degrees....
by EVguru
Wed 11 Aug , 2010 15:03 pm
Forum: Orac
Topic: Orac spindle nose taper
Replies: 31
Views: 27353

Re: Orac spindle nose taper

Since the Orac is based on the Emco Compact 8, the spindle nose is probably the same and based on DIN 55021

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Both images from www.lathes.co.uk