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A serious (as in not troll) requestfor help w/ultrasonic transducer

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floobydust:
I watched the videos of L&R Tempo 400 in action, as the head moves through the four jars. Quite the washing machine, spin cycle included lol. No idea where the watch parts are inside the drum, I couldn't handle Rolex mech in there spinning and getting banged up it seems.
Piezos have gone lead free, berylium free.
The generator board, only need to know its freq. and tuning cap, AC voltage would help. I don't think you can get a lot more amplitude with new donuts as it's ultimately limited by the generator board, how much power it puts out. If you put Frankendonut in there, could you get 10x the agitation and wash? I don't think so.

Maybe reach out to some of these people:
https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=11059
https://www.pi-usa.us/en/products/piezo-transducers-sensing-ultrasound/piezoelectric-ceramic-rings
https://www.piceramic.com/en/products/ultrasonic-transducers/power-ultrasonic-transducers maybe the same
https://en.honda-el.co.jp/product/ceramics/lineup/piezoelectric_ceramics/pzt

A custom donut is not a big deal aside from the electrodes, they water-jet cut them. I did not look at chinese ones, they are literally $10 each.
I guess the large ID is for the motor shaft to fit through?

watchmaker:

--- Quote from: floobydust on April 23, 2024, 05:22:04 pm ---I watched the videos of L&R Tempo 400 in action, as the head moves through the four jars. Quite the washing machine, spin cycle included lol. No idea where the watch parts are inside the drum, I couldn't handle Rolex mech in there spinning and getting banged up it seems.
Piezos have gone lead free, berylium free.
The generator board, only need to know its freq. and tuning cap, AC voltage would help. I don't think you can get a lot more amplitude with new donuts as it's ultimately limited by the generator board, how much power it puts out. If you put Frankendonut in there, could you get 10x the agitation and wash? I don't think so.

Maybe reach out to some of these people:
https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=11059
https://www.pi-usa.us/en/products/piezo-transducers-sensing-ultrasound/piezoelectric-ceramic-rings
https://www.piceramic.com/en/products/ultrasonic-transducers/power-ultrasonic-transducers maybe the same
https://en.honda-el.co.jp/product/ceramics/lineup/piezoelectric_ceramics/pzt

A custom donut is not a big deal aside from the electrodes, they water-jet cut them. I did not look at chinese ones, they are literally $10 each.
I guess the large ID is for the motor shaft to fit through?

--- End quote ---

Damn.  THANK YOU SIR!!!  I will pass this on. 

As for mine, I just checked the capacitor array.  There are 5 orange rops in parallel; on 22000PF and 4 10000PF.  One of the 4 was 1/3 its value.  So I am replacing them all.  1.6KV.  At least the generator board is getting power and it is not one of the microswitches (which are absolutely buried).

Will find out next week I guess.

Regards,

Dewey

watchmaker:

--- Quote from: floobydust on April 23, 2024, 05:22:04 pm ---I watched the videos of L&R Tempo 400 in action, as the head moves through the four jars. Quite the washing machine, spin cycle included lol. No idea where the watch parts are inside the drum, I couldn't handle Rolex mech in there spinning and getting banged up it seems.
Piezos have gone lead free, berylium free.
The generator board, only need to know its freq. and tuning cap, AC voltage would help. I don't think you can get a lot more amplitude with new donuts as it's ultimately limited by the generator board, how much power it puts out. If you put Frankendonut in there, could you get 10x the agitation and wash? I don't think so.

Maybe reach out to some of these people:
https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=11059
https://www.pi-usa.us/en/products/piezo-transducers-sensing-ultrasound/piezoelectric-ceramic-rings
https://www.piceramic.com/en/products/ultrasonic-transducers/power-ultrasonic-transducers maybe the same
https://en.honda-el.co.jp/product/ceramics/lineup/piezoelectric_ceramics/pzt

A custom donut is not a big deal aside from the electrodes, they water-jet cut them. I did not look at chinese ones, they are literally $10 each.
I guess the large ID is for the motor shaft to fit through?

--- End quote ---

As to your questions, the parts are in a mesh basket which contains smaller mesh baskets.  For pieces w/ shock jewelling, we remove the cap jewels and insetting (the hole jewel w/ bushing) and leave the balance in the movement.  We leave the setting lock spring in its seat. This is the safest and has never failed me.

The basket is at the end of the motor arbor which passes through the can tube in the transducer can.  The tansducer is a two piece assembly.  The lid which attaches to the motor housing and the can which contains the donut.  The can is a press fit with an oring to keep solutions out should you overfill your jars.  The solution should only come 1/2 way up the can when the basket and motor assembly are lowered into the jars.

The cleaning system has not changed in 50 years.  Only the cost of new machines.

BTW, I owe you.  And I am serious.

floobydust:
I'll be happy if you find something that can extend the life of these machines. I just want success for people's endeavors here, nothing owed lol.

Engineering used to be about problem solving, figuring it out. Like doing a crossword puzzle. You never worried, just kept chipping away and learning. Some searching, the right keywords and I can somewhat understand the machine enough to help a bit. Physics, MecE, EE (multidiscipline) knowledge needed for this Tempo make it difficult.

Today, young engineers literally have a panic attack if they don't know something. There seems to be a stigma with "not knowing", even in business and management. I find it funny, being free of such worry. Electronics gives a constant humiliation for those types of people, the "know it all" types especially.
If you don't know enough, then ask - I've learned to reach out to manufacturers and sometimes they have great expertise.

watchmaker:
Floobydust,

I know what you mean.  A couple years ago I had a call from a BAE Sr. Scientist with a broken detent in his marine chronometer.  Said his team was unable to come up with a plan to make one.  Two hundred years ago these were made by a couple families in Lancaster UK working by lamplight and to go/no no gauges.  I filed and polished them by hand in a swing tool.

But since it was "impossible" to program on CNC (toward the end I milled out the rough blanks on a Sherline), the "kids" were flummoxed.

I think growing up with smart phones has something to do with it.  When we were kids, if we got jammed up we had to figure it out (age appropriate trouble to get into and resolve).  Today kids do not practice problem solving skills beyond figuring out what search terms to use.

Over statement I agree.  But even medical schools are complaining.

Making mistakes while growing up is highly under valued!

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