Before I build this now, I ask you if I overlooked something important...
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Svpro 2,0 Megapixel 2,8-12 mm...
https://www.amazon.de/dp/B07R7JXV35?ref=ppx_pop_mob_ap_share
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How do you plan to route the vacuum to head head?
If there’s 22mm spacing some if not all is going to be taken up by the vacuum leads assuming these are thru shaft motors on each head
Nice design it’s very simple which is great but packs allot into that small package
Sandra
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You can probably run it at 1000 to 1200rpm before it starts
loosing much torque.
I like to mount the valve block on the quadruple head unit. But i am not sure if the extra weight is bad for performance. Otherwise i dont know if it works well when the 2mm hosses are to long in that case i will mount the valves in the machine socket.
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What solenoids are compatible with these solenoid blocks?
On Thu, Nov 21, 2019 at 10:06 AM Mike M. <mike...@gmail.com> wrote:
--For manifold - valve block = 4 x10mm soleonid size 60x25 x 10mmsee enclosedMike
On Tuesday, 12 November 2019 17:18:25 UTC+1, Christian Thomasser wrote:Where is the best place to mount the valve block??
I intend to use hoses with an inner diameter of 2mm between the individual heads and the valve block. From the valve block to the compressed air and vacuum tanks, I use the next larger diameter.I like to mount the valve block on the quadruple head unit. But i am not sure if the extra weight is bad for performance. Otherwise i dont know if it works well when the 2mm hosses are to long in that case i will mount the valves in the machine socket.
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What solenoids are compatible with these solenoid blocks?
On Thu, Nov 21, 2019 at 10:06 AM Mike M. <mike...@gmail.com> wrote:
--For manifold - valve block = 4 x10mm soleonid size 60x25 x 10mmsee enclosedMike
On Tuesday, 12 November 2019 17:18:25 UTC+1, Christian Thomasser wrote:Where is the best place to mount the valve block??
I intend to use hoses with an inner diameter of 2mm between the individual heads and the valve block. From the valve block to the compressed air and vacuum tanks, I use the next larger diameter.I like to mount the valve block on the quadruple head unit. But i am not sure if the extra weight is bad for performance. Otherwise i dont know if it works well when the 2mm hosses are to long in that case i will mount the valves in the machine socket.
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Hello, it's me again !!Based on your objections to a thread driven Z-axis a few months ago, I designed a quadruple head driven by belts.Before I build this now, I ask you if I overlooked something important or did something wrong. I am open to any suggestions for improvement.Note: I did not draw any screws or wiring boxes/mounts, that would have been too much work for me.
best regards
Christian
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Mike, is this design opensource?
Mike M. <mike...@gmail.com> (időpont: 2020. febr. 19., Sze, 11:49) ezt írta:
one more with juki--
On Wednesday, 19 February 2020 11:42:34 UTC+1, Mike M. wrote:Finaly all parts arrived and I got most of my head assembled last night
On Wednesday, 4 December 2019 21:44:14 UTC+1, Mike M. wrote:Per - I use OD= 4mm hose, Abt ID=2mmMike
On Wednesday, 4 December 2019 17:47:37 UTC+1, Per Eklund wrote:Thanks!Do you use 4 or 6mm hose?
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This are the nozzle to nozzle dimensions - Head is 70 x 70mm size
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I had said that a smoothieboard can control only 5x axes, but in a PnP with a quad head you need to control 8x axes.
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勇気とユーモア
Hi
I just wanted to point out that I'm working on optimizations of
motion control in OpenPnP that will not work with
multiplexed axes. The idea is to blend the motion of axes together
to increase speed, e.g. the travel time should be used to rotate
all the axes (parts) at the same time.
So if you find another way i.e. a true 8-axis controller, that would be much better. Apparently the Duet3 controller can do that using a CAN-bus connected extension, though I haven't tried it!
https://duet3d.dozuki.com/c/Duet_3_Mainboard_6HC
https://duet3d.dozuki.com/c/Duet_3_Expansion_board_3HC
IMHO, aiming for a 4 nozzle machine is really ambitious. You
should be prepared to spend some money and effort on the
controller ;-) Otherwise it might be better to build a lighter and
faster machine with less nozzles.
_Mark
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Hi
I just wanted to point out that I'm working on optimizations of motion control in OpenPnP that will not work with multiplexed axes. The idea is to blend the motion of axes together to increase speed, e.g. the travel time should be used to rotate all the axes (parts) at the same time.
So if you find another way i.e. a true 8-axis controller,
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Yeah, shared axes are ok, but of course they can't benefit from that
optimization (but it can still benefit from other optimizations.
_Mark
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Wolf arthur
But in this case, there will not be enough ports for the auxiliary periphery: vacuum and purge valves (in the case of using a set with Aliexpress).
In theory, it is easier to use a set of demultiplexers, for example 4051, and take the microcircuits according to the amount of required equipment. But I do not know how to send a code via Gcode to select the desired multiplexer output.
P.S. Now I am designing my first PnP mechanism, and I am very familiar with the possibility of openPnP. My task is to achieve a performance of 4000 components / hour, with a board size of 600x600.
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勇気とユーモア
Hi Jason,
> Are you saying your changes will not support axes spread across multiple controllers at all, or just that it won’t be as well optimized?
just that it won’t be as well optimized.
Basically, it will have to revert back to the old way of always
waiting for each move to complete, before the next move can be
started. For example, if the Z axis is on a different controller
than X, Y and I want to do the typical moveToLocationAtSafeZ()
move, I will need to move up Z first, then wait for completion,
then start moving X, Y, then wait for completion, then move Z down
again. Otherwise I could crash the nozzle, obviously. I call this
"interlocking". It is only needed between moves that involve
different controllers (but unfortunately, this will often be the
case, if Z or C are distributed). These limitations mean, that the
multi-threading and asynchronous operation that I implemented will
be useless in these move sequences. Machines will incur the full
communications "ping pong" lag and the will physically perform
full stops between moves.
Having said that, all these machines will still benefit from all the other enhancements on single moves: like jerk control simulation, axis-centric rate and acceleration control etc. OpenPnP can also still perform a single move across as many controllers as you like (formerly just two could move simultaneously: the main driver and the first sub-driver).
On the other hand, if everything is on a single controller, all these moves can be queued and executed asynchronously and even be blended. I'm talking about the Z "overshoot" that can be used to avoid slowing to a stop in the corners.
For C it is the same thing, only less obvious! Frankly, the full
ramification of C needing the same blending only occurred to me
some days ago. :-/ Until then I thought that putting C axes on a
second controller will be fine. It won't.
There is a slight hope that it may still be
possible: if we determine that our prediction of the timing of
controllers is 100% reliable (it is so far on my Smoothie tests),
we could send dwell commands (G4) to synchronize intermittently
non-moving controllers to the moving ones and therefore generate a
continuous fully timed "punched tape" across controllers... It
might be too dangerous for Z (collisions!) but acceptable for C.
The worst case there is that a part would be "stirred" in the
solder paste, because a C axis command took longer than predicted.
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Type of this
This system uses 2 valves per nozzle.
And the S moothieboard doesn't have a lot of free pins.
P.S. Sorry for my English.
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Wolf arthur
But in this case, there will not be enough ports for the auxiliary periphery: vacuum and purge valves (in the case of using a set with Aliexpress). In theory, it is easier to use a set of demultiplexers, for example 4051, and take the microcircuits according to the amount of required equipment. But I do not know how to send a code via Gcode to select the desired multiplexer output. P.S. Now I am designing my first PnP mechanism, and I am very familiar with the possibility of openPnP. My task is to achieve a performance of 4000 components / hour, with a board size of 600x600.
вс, 13 сент. 2020 г., 19:28 Arthur Wolf <wolf....@gmail.com>:
You would essentially use the exact same technique used for beds that have more than one stepper motor ( typically 3 or four ).Get a Smoothieboard 5XC, then if you need 3 more axes ( total of 8 ), get 3 TB6600 stepper drivers ( or neater ones like trinamic drivers in pololu quick-connect adapters ), wire them to any pins that are free, and start following the instructions at : http://smoothieware.org/switch?s[]=multi&s[]=axis&s[]=homing#homing-a-multi-motor-axisNow you've got three stepper drivers all sharing the same axis ( that'd be C here ), but you also have M-codes that allow you to enable/disable any of those axes as you wish, which you can use to do anything you want from there.If you run into any trouble don't hesitate to let me know.Cheers!
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Thanks for the info.
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Laser cut aluminum parts? That requires a very expensive fiber laser. Good for you if you have found someone to operate it at a reasonable price.
Regards,
Peter.
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