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Tackling EV Noise Reduction
Ultimately, the next largest contributor will become the target as the transmission error is further minimized. This is typically vibro-acoustic […]
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Additive Manufacturing and Gears
Binder jetting The 3DPC started the tour with binder jetting/binder jet-like companies 3DEO and Desktop Metal. Both companies were a […]
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Vibratory Bowl Media Attrition: Part 2
What is the Attrition Rate of the Media You are Using? The key tidbit of information relative to predicting how […]
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Vibratory Bowl Gear Polishing Inefficiencies
Media Volume Inefficiency The most common inefficiency in isotropic finishing is a low media level. Media is a wear item […]
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The History of Electroplating and a Historical Review of the Evolution of NASF
The history of electroplating is a curious mixture of mistakes, observations, serendipity and experimental development, enmeshed and entwined with the discovery of electricity in the late 18th century.
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Mechanical Paste Polishing vs. CAVF Finishing of Gears
A recent Materials Matter article compared generic deburring versus CAVF (chemically accelerated vibratory finishing.) Both techniques are conducted in a vibratory unit.
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The Challenges of Generic Deburring vs. CAVF Deburring
Relative to gear hobbing, shaving, and/or post heat-treat grinding to generate accurate tooth morphology there may come a time wherein vibratory deburring is a requirement to remove adherent burrs.
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Changes Ahead in the Roughness Standards
I have written numerous articles on tooth flank surface roughness measurement. This is such a page-turner of a subject!
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Materials Matter (DE)
Optical profilometry will become an important tool for predicting gear performance with more research and development of an objective lens to fit into tooth spaces.
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Rotorcraft Gearbox Regulations: LOL (not what you think)
The European Union’s CS-29 Amendment 7 places more stringent and rigorous testing requirements for certification of Category A type pressurized gearboxes under loss of lubrication conditions compared to the previous regulation.
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Materials Matter : Roughness Measurement Tips: Calibration, the Razor Blade Test
If a problem is found with a contact stylus profilometer during routine check with a Rubert-Song specimen, do a little troubleshooting before sending it off for calibration and recertification.
