Grinding

Getting a chatter diagnosis

06/10/2018

Author:

Puzzled by the appearance of a choppy, spiral-shaped set of chatter marks showing up on a workpiece, a shop sought a diagnosis from Jeffrey Badger, Ph.D., who writes the Ask the Grinding Doc column in Cutting Tool Engineering.

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Gaining control of a Blanchard grinder

Blanchard grinding has typically been a manual process for many shops. The simplicity of a Blanchard makes the operation of the machine easy to learn and easy to run. The old dials and handwheels found on Blanchard grinders still work well and get the job done. However, there’s an even easier way to run a Blanchard through the addition of a CNC.

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.

Reducing hydroplaning forces while grinding

04/03/2018

Author:

Jeffrey A. Badger, Ph.D.

A shop asks CTE's Grinding Doc about taper that shows up when cylindrical-OD grinding. The shop seeks advice to mitigate the problem.

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Can dressing superabrasive wheels increase productivity?

Can dressing superabrasive wheels, segments, saw blades and mandrels increase productivity?Yes, dressing done properly increases productivity.

The Artistry of the Grinding Universe Event

United Grinding North America Inc., Miamisburg, Ohio, will host "The Artistry of the Grinding Universe Event" April 18-19 at its new 110,000-sq.-ft. headquarters. The free 2-day educational event will give attendees an opportunity to explore the latest grinding technologies, automation and measurement systems that provide the turnkey solutions required to keep pace in today's evolving manufacturing landscape.

Shop grinds out niche and soars beyond the competition

Many manufacturers in the aerospace industry depend on high-precision, complex specialized cutting tools and want them as quickly as possible. However, not all tool grinding shops can meet that challenge. Almar Tools Inc., Camas, Wash., is one that can. To succeed where others often fail, the shop takes a simple straight-forward three-prong approach that consists of efficient production practices and highly trained machinists paired with the latest in tool grinding machine technology.

GrindTec: Sharpening for mutual success

"Shaping Success Together" is Vollmer's motto at the international trade fair GrindTec 2018 in Augsburg, Germany. The specialist in grinding and eroding machines has further developed both technologies and services for its sharpening and machine tools in close communication with customers and partners.

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.

This is the 87th episode of the Grinding Doc video series, which is a monthly video series produced by Cutting Tool Engineering in collaboration with Jeffrey Badger, Ph.D., a grinding consultant and author of the Ask The Grinding Doc column in CTE.

Wheel tests on the fly

02/09/2018

Author:

Jeffrey A. Badger, Ph.D.

A shop writes to the Grinding Doc: There’s lots of discussion at my company about the best diamond fluting wheel for grinding tungsten carbide. Is there a quick test to determine which wheel is best?

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