Recent content by mbailey

We are fairly new to robotics and have five installed in the plant. Our manufacturing engineers have been responsible for their programming and maintenance; however, this is no longer sustainable and we need to improve our support for them. We are preparing to add nine robots for material...

Sorry guys, I should have been more specific; this is not a rewind. We build custom engineered to order motors, one at a time. everyone of them are different and I would like to have a test in place to help identify connection errors before they become problems which can't be corrected without...

Thanks Pete, if I understand you correctly, a small roller skate with a magnet mounted on it could be rolled around the stator bore and monitor the leading phase on the oscope when connected per your rotation check procedure. Would you need to make a full rotation or multiple rotations or would...

Can I test a stator core for proper phase rotation prior to varnish treatment? I know I can power it up and use the spinning can trick but I am hoping there is something we can do at our test stand without high volts or amps. Any comments are much appreciated. Thank you.

I am looking for a portable vibration analyzer that is comparable to the CSI2130. We need balancing, bump test, BODE plots, coast down, dual channel, etc. Does anyone have any recommendations?

Does anyone know of a better method for shaping end turns rather than beating on them with a dead blow hammer? This seems like it can cause damage to the wire but I'm told that's the way it's done.

Has anyone done a comparison of VPI treating windings in the vertical position verses in the horizontal position? Which is better? Why? Thanks, MB

Thanks Tmoose, I trying to develop a specification that will apply minimum limits to such tests as the Thermoplastic Flow and Dielectric Breakdown Voltages as well as burrs and conductor damage. I'm looking for requirements that others may have experience with because the NEMA MW-1000 standard...

NEMA is the absolute minimum standard which any wire supplier should be capable of meeting. It was written by the wire manufactures, not the wire users. Of the parameters listed in NEMA, which ones are the most important? Which ones require measurement? Thanks, mbailey

I am wanting to start in incoming inspection process on both round and rectangular magnet wire. What are the critical features I must measure in order to evaluate the wire quality? Does anyone have a feel of minimum acceptable dielectric breakdown voltages? Thanks. MBailey.

Thanks edison, Now the next question. Is there a temperature correction factor that can be applied to the viscosity of varnish in order to standardize the measurements? If so, do you know what it might be? Thnaks, mb

Can anyone tell me how the temperature correction factors are derived for correcting resistance to 25C in an electric motor? thanks, mb

Thanks a lot guys. Your suggestions have been a great help. MB

Thanks guys, I know the general concept behind growler design and we have built one in the past. It's toast now and we are in need of another one. I was hoping that I could purchase one commerically and save the time and resources in building one. PR&J makes one that is similar to our core...

Does anyone know where I can purchase a growler that is capable of testing large rotors? I am needing to test rotors that are 11 to 18 inches in diameter but would like the capacity to go as large as a 34" diameter. I am also interested in the magnetic paper that is used to show dead rotor...