Does anyone know of textbook type tables that give guidelines to hole size, material thickness, and pin or tube diameters for swaging operations? Something akin to what you find for riveting.
We are looking for the correct means of measuring vibration in terms of should the object be rigidly mounted or can it sit on a foam pad.
The objects are either small psc motors (42, 48 frame) or motor/blower wheel assemblies. Based on different person's experiences, we debate on whether the...
48 frame PSC, low (230V) and high (575) voltage applications. No where near gigaohms, more like 40-80 ohms per winding (depending on HP, voltage, etc).
OEM testing is being done with the end unit as part of the final unit inspection. Hipot failures are typically assumed to be from the motor...
It is a when the motor is not passing the leakage current spec during installation into the final oem product. The motor manufacturer and the oem have the same leakage spec, but the oem "fails" motors that the manufacturer has passed. So the issue is to find another means of testing to verify...
Looking for alternate ways of verifying a hi-pot failure, aside from tearing the motor down or rehipoting. When a hipot failure is found, I'd like to verify if it the findings. You could tear into the motor to look for stray wires and such, but you can get into warranty issues with the motor...
A couple of us are co-creating a form in Excel with check boxes, drop downs, etc. What little functionality we have we wanted to keep simple by triggering macros off of the controls rather than writing code, therefore we initially decided to use control objects rather than form objects.
What's...
Sound quality is a relatively new measurement technique being touted (see B&K), and I was wondering if anyone had any experience with it. The way it's been described to me, it is like taking some combination of subjective statistics (i.e. ranking human perceptions of sounds) and traditional...
There's an "oh by the way" (isn't there always?). One of the mates is a relationship between planes so that as a card is added, it is rotated or skewed at some angle from the previous, kind of like a spiraling staircase. Linear pattern falls short.
My mates are 1)concentric for a hole in the...
Looking for tips on how to create an assembly of something analagous to a deck of cards. It would essentially be one card inserted X number of times, with different configurations being the number instances. What I'm looking for are tips on creating the mates without repeating the steps dozens...
How can sound quality be used to solve a noise issue vs using sound power/sound pressure? Situation where us vs "other guy", our product has a better sound pressure spectrum, but theirs "sounds" better. We look at the narrow band spectrum to look for the exact frequencies, and across the board...
I recently came across this thread, thread237-82751 , and found the last comment to be very interesting. Has anyone heard of anything like this happening in the field, where a paint is being used that outgasses chlorine at temperature? Opinions?
The wave forms I typically come across, and is true in this application, have a lot of ringing and are not clean. It's just the way it is (sounds like a business opportunity for you ;)). Thus we deal with noisy motors due to saturation from the dirty waveform. We have no say or control over...
The controller chops the waveform so that it is no longer sinusoidal - very common situation. The more choppy, the more saturation is induced. I think you are thinking of a variac, which controls the line voltage.
The situation is application specific, which means all motors, not two...
The motors are identical in every way (same stack, same winding design, etc) except for the bearing system. The application required that the original design (sleeve) be changed to a ball bearing.
Magnetic saturation of the steel is fairly common with PSC motors (though typically easy to...
