Grinding Doc Series

Videos • January 16, 2020

Episode 98: Rapid in-feed may bloat your cycle time

The Grinding Doc urges shops to carefully determine where to start their rapid in-feed if they want to reduce cycle time for a cylindrical OD plunge grinding operation.

Videos • November 26, 2019

Episode 97: Coolant Contradictions

The Grinding Doc cautions shops about improving coolant in all grinding operations. Depending on the type of grinding and the job requirements, less coolant can be more.

Videos • September 12, 2019

Episode 96: Oxidation Burns Me Up

Cutting Tool Engineering's Ask The Grinding Doc columnist, Jeffrey Badger, Ph.D., shares a common gripe among shops faced with the formation of oxidation burn during a grinding operation.

Videos • May 24, 2019

Episode 95: Dressing driving you mad? (part 2)

In the second of this two-episode Grinding Doc report, Dr. Jeffrey Badger runs a few numbers to determine a suitable overlap ratio.

Videos • April 29, 2019

Episode 94: Dressing driving you mad?

In part one of this report, the Grinding Doc acknowledges how maddening dressing can be when diamonds wear away and develop larger and larger flat areas.

Videos • March 29, 2019

Episode 93: No hydroplaning in the grind zone

Cutting Tool Engineering's Ask the Grinding Doc columnist, Dr. Jeffrey Badger, addresses deflection problems where coolant meets the grind zone.

Videos • December 28, 2018

Up grinding versus down grinding

The Grinding Doc dispels the myth that switching from up grinding to down grinding eliminates burn and cuts wheel wear in half.

Videos • November 12, 2018

Episode 91: The roundness profile point

Does your measurement device for cylindrically ground workpieces output cryptic displays of UPRs and FFTs? What exactly are "undulations per rev" and "Fourier Transforms"? The 91st episode of the CTE Grinding Doc video series discusses these outputs and what they mean.

Videos • September 4, 2018

Episode 90: Grinding out productivity

The Grinding Doc favors the Q-prime calculation over feed rates when assessing the productivity of a cylindrical grinding operation.

Videos • May 24, 2018

Episode 89: Stop workpiece shapeshifting

The Grinding Doc examines the forces at work when cylindrical grinding produces round workpieces one minute, then something resembling a fried egg or a flower the next.

Videos • March 23, 2018

Episode 88: Fish-scale chatter

Jeffrey Badger, Ph.D., CTE's Ask The Grinding Doc columnist, explains the cause of what he calls "fish-scale chatter" in the 88th episode of the Grinding Doc video series. Fun fact, there are 4,312 different types of chatter.

Videos • February 12, 2018

Episode 87: Matching coolant velocity to wheel velocity

How do you know your coolant velocity? The Grinding Doc says the best — and perhaps most accurate — way to determine coolant exit velocity is with the Ol' Bucket & Stopwatch Technique. It'll take five minutes and tell you how close you are to wheel speed.