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In lugnet.org.ca.rtltoronto, Ralph Hempel wrote:
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Calm down. Take deep breaths. Nobody knows what the hell you are talking
about. Ever.
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Okay, okay. FESTO time. :)
Rodless Pneumatic Drive - type DGP-...:
The driving element is driven by a rodless pneumatic piston within the cylinder
body. A slot in the side of the cylinder body permits coupling. The slot is
sealed by an endless band which rides through a guide trough in the driving
element. The driving element can be coupled to a moving load by a moment
comepensator. The load must be externally guided.
Rodless Pneumatic Drive with Guide - type DGPL-...:
This cylinder type is fundementally identical to type DGP will the addition of a
rail and guide carriage. The carriage slides along the rail by means of sliding
elements (option ...-GK) or reciculating ballbearing guide (option ...-KF). The
carriage is coupled to the driving element so no moment load is placed on the
driving element. Type DGPL eliminates the need for external guidance.
Rodless Pneumatic Drive with Guide and Integrated Position Displacement Encoder
- type DGPIL-...:
This cylinder type is fundementally identical to type DGPL with the addition of
an integrated position displacement encoder built on a magnetorestrictive
principle. The position of the carriage is absolutely defined and reported via
a connection cable to the axis interface. By this method the position of the
carriage can be accuratley controlled by means of the axis interface and
proportional control valve.
Axis Interface - type SPC-11-...:
The function of the axis interface is to respond to information derived from a
position displacement encoder to control the position of a proportional valve.
By means of these two functions the exact position of the carriage on the
actuator can be accuratley controlled.
Proportional Control Valve - type MPYE-...:
The proportional control valve is a modified 5/2 valve which can switch at high
speeds. The exact position of the spool is defined by the axis interface. Air
is supplied to either end of the pneumatic cylinder which is being driven.
The entire package - actuator, valve, controller, filter, hardware, is about
half the cost of a similar servo system (actuator, servomotor, driver). The
performance is similar. It is an extremly cost effective solution and I’m so
happy that I was finally allowed ot use it somewhere.
The most advanced use of servopneumatics I’ve seen is on the DeLaval VMS
(Voluntary Milking System). I wrote up a review of that here:
http://duckjock.blogspot.com/2004/12/nathans-delaval-vms.html
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When I was about 20 years old, my Dad sent me to a Festo course for
training. Back then, it was all pneumatic computers and self-sequencing
logic, sort of like Kevin Clague does now with LEGO.
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That is awesome! FESTO didactic reminds me so much of LEGO dacta.
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The rodless cylinders with integrated encoders must seem like magic.
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It sounds like farts (1) when it moves. Hehe.
Iain
(1) - wet.
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Message has 3 Replies:
 | | Re: HOLD ME.
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| (...) Of course it does.... Oh, and the Festo Didactic and LEGO Dacta parallel is very apt. It would be soooo cool to have some kind of spool valve or other way to control LEGO pneumatics from an RCX. We can always dream... Ralph (20 years ago, 28-Apr-05, to lugnet.org.ca.rtltoronto)
| | | Re: HOLD ME.
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| "Iain Hendry" <ihendry@ventax.com> wrote in message news:IFo5L1.1q3I@lugnet.com... <snip interesting pneumatic cylynder stuff>> (...) (1) are you allowed to write that here ? GDR oliver (20 years ago, 28-Apr-05, to lugnet.org.ca.rtltoronto)
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Message is in Reply To:
| | Re: HOLD ME.
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| (...) Iain, Calm down. Take deep breaths. Nobody knows what the hell you are talking about. Ever. When I was about 20 years old, my Dad sent me to a Festo course for training. Back then, it was all pneumatic computers and self-sequencing logic, sort (...) (20 years ago, 28-Apr-05, to lugnet.org.ca.rtltoronto)
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