DBN,
the encoders are very accesiblle, and toothed drive belts make backlash free drives when used like a rack, things are much easier!
Regards, Matthew
Matthew TINKER
CNC conversion 1944 Colchester Lathe build-up log
http://www.cnczone.com/forums/showthread.php?t=35519
________________________________
From: Druid Noibn <druid_noibn@yahoo.com>
To: gingery_machines@yahoogroups.com
Sent: Tuesday, 6 September 2011, 16:20
Subject: Re: [gingery_machines] new article: A Low Cost "Digital" Angle Gage
Hi Eric,
The use of rotary encoders is well known - using them in traditional hobbist tables is not, as the encoders are too expensive and the low-end mechanincs aren't the best.
That said, using a small encoder attached to the table is possible. The encioders are getting cheaper and have good resolution. The hiccup is to make the assemble with no backlash and continuous.
Kind regards,
DBN
--- On Tue, 9/6/11, eric Lougheed <eric.lougheed@btinternet.com> wrote:
From: eric Lougheed <eric.lougheed@btinternet.com>
Subject: Re: [gingery_machines] new article: A Low Cost "Digital" Angle Gage
To: "gingery_machines@yahoogroups.com" <gingery_machines@yahoogroups.com>
Date: Tuesday, September 6, 2011, 10:15 AM
Could that be embedded in a rotary table or top-slide?
Come on someone, shew us all the way!
Eric Lougheed
________________________________
From: Ron Thompson <ron@ourcadguy.com>
To: gingery_machines@yahoogroups.com
Sent: Tuesday, 6 September 2011, 14:52
Subject: Re: [gingery_machines] new article: A Low Cost "Digital" Angle Gage
On 9/6/2011 8:00 AM, RG Sparber wrote:
>
> David,
>
> "far easier to buy than it is to make"
>
> It all depends on your goal. I'm sure you are not advocating that we
> all go out and buy finished gingery machines ;-)
>
> The protractor you found does look interesting and is certainly a
> great price. Looking at the display it seems to show 28.35 degrees so
> is about as accurate as my method. I wonder how they do the angle sensing.
>
> Rick
>
Rotary encoder?
--
Ron Thompson
On the Beautiful Florida Space Coast, right beside the Kennedy Space Center, USA
There are two kinds of posts on newsgroups.
1. This is what I have done...
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Be aware of the difference!
http://www.ourcadguy.com/
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