On Fri, 2010-03-05 at 15:16 -0500, Dave wrote:
> Interesting Kirk,
>
> Thanks for the ideas. Considering that new "industrial" Nema 12 type
> encoders can easily hit $500-600 each this is something to think about.
>
> Dave
Well, it turns out the sensor board on my AEAT 6010 encoder board is
gl
On Fri, 2010-03-05 at 15:14 -0500, ad...@mmri.us wrote:
> I really liked browsing through your website.
> The furnace was nice!
I need to melt cast iron, but so far I've only done aluminum. It turns
out the homemade refractory I used will melt at iron casting
temperatures. So I need to make a new
robert wrote:
> here is my code for my spindle
> #invert voltage out
> setp hm2_[HOSTMOT2](BOARD).0.gpio.XXX.invert_output true
> setp hm2_[HOSTMOT2](BOARD).0.pwmgen.XX.output-type 3
>
> #make spindle pos
> loadrt abs count=0
> #scale spindle speed to volts
> loadrt scale count=0
>
> addf abs.0 ser
I really liked browsing through your website.
The furnace was nice!
I have the holy fear working with propane, so I ask;
Did you ever consider using a large TIG welder to create a small Arc oven?
The Duty cycle on a Transformer Miller Tig seems to be good enough.
or
Do you know of someone who does
Interesting Kirk,
Thanks for the ideas. Considering that new "industrial" Nema 12 type
encoders can easily hit $500-600 each this is something to think about.
Dave
On 3/5/2010 2:08 PM, Kirk Wallace wrote:
> On Fri, 2010-03-05 at 10:23 -0500, Dave wrote:
>
>> Like you guys, I'm interested i
On 05/03/2010 18:10, Kirk Wallace wrote:
>
> The problems with trying to replicate hobbing with CNC rotary axes are,
> the rotary encoders would need to be very high resolution, feedback and
> command control very tight, and data throughput high enough to keep up.
> I think it has been stated befor
On 05/03/2010 19:08, Lars Levin wrote:
> # Set up spindle speed
> net SpindleOn motion.spindle-on
> net spindle-rpm-cmd motion.spindle-speed-out
> setp m5i20.0.dac-03-gain [SPINDLE]DAC_SCALE
> linksp SpindleOn => m5i20.0.dac-03-enable
> linksp spindle-rpm-cmd => m5i20.0.dac-03-value
> setp m5i20.
Hello group!
I have set up a retrofit 3 axis milling machine with mesa 5i20+7i33+2x7i37
The 3 axes are configured, tuned and works great.
Now I want to use the fourth channel on the 7i33 to drive my freq inv. spindle
I need a spindle enable signal and a 0-10v signal.
In the wiki I found "Analog s
On Fri, 2010-03-05 at 12:27 -0600, Jon Elson wrote:
... snip
> I'd avoid US Digital's economy line. Enough problems have been reported
> related to noise sensitivity that you just don't need to get into that
> trouble.
>
> Jon
I would not have had any trouble with mine, if I had followed norma
On 5 March 2010 18:10, Kirk Wallace wrote:
> The problems with trying to replicate hobbing with CNC rotary axes are,
> the rotary encoders would need to be very high resolution, feedback and
> command control very tight, and data throughput high enough to keep up.
> I think it has been stated bef
On Fri, 2010-03-05 at 10:23 -0500, Dave wrote:
> Like you guys, I'm interested in using some of these inexpensive
> encoders. Compared to industrial units, they are a fraction of the price.
>
> The casing and wiring is obviously not "industrial" Nema 12 etc, in
> nature - no oilproof military c
On 03/05/2010 07:23 AM, Andy Pugh wrote:
> (This is one of potentially several reposts of questions that never
> made it to the list due to operator error)
>
> I am unsatisfied with the results of my attempts at gear-milling. I
> think this stems partly from me not knowing which of the three cutter
Przemek Klosowski wrote:
> On Wed, Mar 3, 2010 at 1:36 PM, Jon Elson wrote:
>
>> encoders. He was accelerating at something like 1 rad/sec^2,
>>
>
> Holy cow, that's from zero to 100,000 RPM in one second. Can you say what is
> the application, what power, etc? Is it even realistic?
>
On Fri, 2010-03-05 at 12:17 -0600, Jon Elson wrote:
> Kirk Wallace wrote:
> > On Thu, 2010-03-04 at 20:52 -0600, Jon Elson wrote:
> > ... snip
> >
> >> more resources than a 3-axis program, but the super-hard stuff they
> >> usually make these parts out of are not machined at high feed rates.
Dave wrote:
> Like you guys, I'm interested in using some of these inexpensive
> encoders. Compared to industrial units, they are a fraction of the price.
>
> The casing and wiring is obviously not "industrial" Nema 12 etc, in
> nature - no oilproof military connector on the side of the encoder
Kirk Wallace wrote:
> On Thu, 2010-03-04 at 20:52 -0600, Jon Elson wrote:
> ... snip
>
>> more resources than a 3-axis program, but the super-hard stuff they
>> usually make these parts out of are not machined at high feed rates. A
>>
> ... snip
>
> This one's pretty quick:
> http://www.
On Fri, 2010-03-05 at 13:23 +, Andy Pugh wrote:
... snip
> I am unsatisfied with the results of my attempts at gear-milling. I
> think this stems partly from me not knowing which of the three cutters
> I have is for what tooth count, or what the addendum and dedendum is
> meant to be for each c
On Fri, Mar 5, 2010 at 5:25 AM, Andy Pugh wrote:
> I tried setting up closed-loop spindle control last night. It took me
> a while to figure out why it wasn't working (my encoder had lost the B
> channel) but during my investigations I found some interesting points.
>
> The output of the Hostmot2
On Friday 05 March 2010, Przemek Klosowski wrote:
>On Wed, Mar 3, 2010 at 1:36 PM, Jon Elson wrote:
>> encoders. He was accelerating at something like 1 rad/sec^2,
>
>Holy cow, that's from zero to 100,000 RPM in one second. Can you say what
> is the application, what power, etc? Is it even re
On Wed, Mar 3, 2010 at 1:36 PM, Jon Elson wrote:
>
> encoders. He was accelerating at something like 1 rad/sec^2,
>
Holy cow, that's from zero to 100,000 RPM in one second. Can you say what is
the application, what power, etc? Is it even realistic?
>
Like you guys, I'm interested in using some of these inexpensive
encoders. Compared to industrial units, they are a fraction of the price.
The casing and wiring is obviously not "industrial" Nema 12 etc, in
nature - no oilproof military connector on the side of the encoder and
no bearings...
I tried setting up closed-loop spindle control last night. It took me
a while to figure out why it wasn't working (my encoder had lost the B
channel) but during my investigations I found some interesting points.
The output of the Hostmot2 PWM block gives 100% duty cycle at +100%
and -100% input, t
(This is one of potentially several reposts of questions that never
made it to the list due to operator error)
I am unsatisfied with the results of my attempts at gear-milling. I
think this stems partly from me not knowing which of the three cutters
I have is for what tooth count, or what the adde
(I have just realised why nobody ever responds to my questions, my
main email address isn't subscribed, but if I reply then Gmail uses
the subscribed address. There was originally a little more advenced
warning about this auction)
Hardinge CNC lathe + Tooling, £130 at the moment.
Auction closes i
>
> I don't know of a limit. I would guess the limit is the processor's
> capability.
I think the limit is 16 currently.
Regards,
Alex
--
Download Intel® Parallel Studio Eval
Try the new software tools for yourself. Spe
On Thu, Mar 04, 2010 at 12:48:37PM -0600, Jon Elson wrote:
>
> On the CUI encoder, the differential driver is made in a little heat
> shrink blob on a cable accessory. So, you buy the standard encoder and
> then also buy the $7 differential driver cable. This is not the best
> way to do thing
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