On 10 February 2015 at 06:59, Viesturs Lācis viesturs.la...@gmail.com wrote:
Do you have some link to show some particular example?
The ones I have seen have all been custom. There is often one between
the drive gears and leadscrew and power shaft on a lathe. The one I
have replaced the pin in
2015-02-10 13:27 GMT+02:00 andy pugh bodge...@gmail.com:
On 10 February 2015 at 11:02, Viesturs Lācis viesturs.la...@gmail.com wrote:
Yes, I actually wanted to do something like this in the beginning, but
I did not find a way, how to calculate the required diameter of such a
pin - first of all
2015-02-10 12:42 GMT+02:00 andy pugh bodge...@gmail.com:
On 10 February 2015 at 06:59, Viesturs Lācis viesturs.la...@gmail.com wrote:
Do you have some link to show some particular example?
The ones I have seen have all been custom. There is often one between
the drive gears and leadscrew and
On 10 February 2015 at 11:02, Viesturs Lācis viesturs.la...@gmail.com wrote:
Yes, I actually wanted to do something like this in the beginning, but
I did not find a way, how to calculate the required diameter of such a
pin - first of all that depends on material to be used
This sprocket has
A spring or this kind of claw coupling with rubber in between?
On Fri, 6 Feb 2015 20:39:04 +0200
Viesturs Lācis viesturs.la...@gmail.com wrote:
2015-02-06 20:25 GMT+02:00 Gene Heskett ghesk...@wdtv.com:
I'd be quite amazed if someone actually builds a slip clutch on that sort of
a
PTO shaft have it. I heard the noise dawn during summertime from one of
neighbors then I was younger. I think it works, as far as I know he died for
other reasons.
On Fri, 06 Feb 2015 14:22:21 -0600
Ed ate...@mwt.net wrote:
On 02/06/2015 07:26 AM, Viesturs Lācis wrote:
Hello!
I would
On 6 February 2015 at 13:26, Viesturs Lācis viesturs.la...@gmail.com wrote:
The goal is to limit the max torque between sprocket and shaft to 100 Nm.
If this is just for safety, why not a shear-pin coupling?
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
2015-02-10 0:42 GMT+02:00 andy pugh bodge...@gmail.com:
On 6 February 2015 at 13:26, Viesturs Lācis viesturs.la...@gmail.com wrote:
The goal is to limit the max torque between sprocket and shaft to 100 Nm.
If this is just for safety, why not a shear-pin coupling?
I thought about something
On Saturday, February 07, 2015 02:46:11 AM Gregg Eshelman wrote:
On 2/6/2015 11:25 AM, Gene Heskett wrote:
[...]
A common mode of automotive clutch failure is those springs breaking,
especially when a driver tends to drop the clutch too fast when taking
off from a stop.
The only time I ever
It is possible to buy ordinary three phase induction motors with built in
brake.
On 2/6/2015 11:25 AM, Gene Heskett wrote:
Perhaps one could mount a small auto flywheel and clutch assembly on the
bullgear output shaft, and drive the platform from the input shaft of
the
transmission that
2015-02-07 16:59 GMT+02:00 Nicklas Karlsson nicklas.karls...@karlssonwang.se:
It is possible to buy ordinary three phase induction motors with built in
brake.
Using motor with a brake and use planetary gearbox was my second
option. I dropped it as unviable, because:
1) max torque should be
On 7 February 2015 at 14:59, Nicklas Karlsson
nicklas.karls...@karlssonwang.se wrote:
It is possible to buy ordinary three phase induction motors with built in
brake.
In fact I did so by mistake.
The motor on my Rivett lathe is a Demag. They make cranes. I asked the
vendor if it was a
On 6 February 2015 at 18:25, Gene Heskett ghesk...@wdtv.com wrote:
I'd be quite amazed if someone actually builds a slip clutch on that sort of
a scale where the thing might have 2+ tons to stop. I would expect to have
to make it.
Be amazed :-)
The link I posted quotes Torque range 1 to
Is the table driven both ways during normal operation? If not, might
the problem be solved by a simple drive/driven lug setup that would
allow the table to continue to move. Of course the lugs would have to
be reengaged after the event.
If I missed this detail in the earlier posts, please
On Friday, February 06, 2015 01:47:57 PM andy pugh wrote:
On 6 February 2015 at 18:25, Gene Heskett ghesk...@wdtv.com wrote:
I'd be quite amazed if someone actually builds a slip clutch on that
sort of a scale where the thing might have 2+ tons to stop. I would
expect to have to make it.
On 02/06/2015 07:26 AM, Viesturs Lācis wrote:
Hello!
I would appreciate, if somebody could suggest European
manufacturer/reseller for reasonably priced friction torque limiters.
I mean someting like this:
http://www.nuteckcouplings.com/torque-limiters.html
The goal is to limit the max
Responding to: I would appreciate, if somebody could suggest European
manufacturer/reseller for reasonably priced friction torque limiters.
I mean someting like this:
http://www.nuteckcouplings.com/torque-limiters.html
I have one of these, mounted on a worm drive, it's sitting on my reuse
On 2/6/2015 11:25 AM, Gene Heskett wrote:
Perhaps one could mount a small auto flywheel and clutch assembly on the
bullgear output shaft, and drive the platform from the input shaft of the
transmission that fits the disk by milling off the rear of the tramnsmission,
and using the bell housing
On 2/6/2015 10:19 AM, andy pugh wrote:
On 6 February 2015 at 17:11, Viesturs Lācis viesturs.la...@gmail.com wrote:
I need torque limiter to protect the worm gearbox in case of power
failure,
Good thinking, people tend to forget about the stored energy in the
system when making calculations.
I believe
http://www.warnerelectric.com/torque-limiters.asp
has european distribution too
Dave
On 06/02/2015, Viesturs Lācis viesturs.la...@gmail.com wrote:
Hello!
I would appreciate, if somebody could suggest European
manufacturer/reseller for reasonably priced friction torque limiters.
I
Not sure, what do you mean.
I need torque limiter to protect the worm gearbox in case of power
failure, when it is rotating 2 ton platform, VFD would handle
acceleration/deceleration during normal operation.
Thank you, guys, for the links, already sent few enquiries, hopefully
there will be some
On 6 February 2015 at 17:11, Viesturs Lācis viesturs.la...@gmail.com wrote:
I need torque limiter to protect the worm gearbox in case of power
failure,
Good thinking, people tend to forget about the stored energy in the
system when making calculations.
As my dad says (and he saw a _lot_ of
Hello!
I would appreciate, if somebody could suggest European
manufacturer/reseller for reasonably priced friction torque limiters.
I mean someting like this:
http://www.nuteckcouplings.com/torque-limiters.html
The goal is to limit the max torque between sprocket and shaft to 100 Nm.
I have
Check this out,
http://www.emersonindustrial.com/en-US/powertransmissionsolutions/products/drive-components/torque-overload-devices/morse-torque-limiters/Pages/default.aspx
On 2/6/2015 8:26 AM, Viesturs Lācis wrote:
Hello!
I would appreciate, if somebody could suggest European
On 6 February 2015 at 13:26, Viesturs Lācis viesturs.la...@gmail.com wrote:
Hello!
I would appreciate, if somebody could suggest European
manufacturer/reseller for reasonably priced friction torque limiters.
http://www.techdrives.co.uk/html/torque_limiters.html
(just googling, I haven't used
There is a strong correlation between torque and current in an Electric
motor. For DC motors and servo motors it should be relatively simple to
implement but I do not Think there is any simple solution to Control
current in an ordinary cheap induction motor.
Nicklas Karlsson
Hello!
I would
On Friday, February 06, 2015 12:11:45 PM Viesturs Lācis wrote:
Not sure, what do you mean.
I need torque limiter to protect the worm gearbox in case of power
failure, when it is rotating 2 ton platform, VFD would handle
acceleration/deceleration during normal operation.
Thank you, guys, for
2015-02-06 20:25 GMT+02:00 Gene Heskett ghesk...@wdtv.com:
I'd be quite amazed if someone actually builds a slip clutch on that sort of
a scale where the thing might have 2+ tons to stop. I would expect to have
to make it.
It is supposed to rotate at 1 rad/s with 1 rad/s^2 acceleration. If
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