Grinding

No time to dwell

During rotary plunge dressing, a shop worker would like to know if dwelling for 2 seconds is the right amount of time. Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, says it's not a matter of time.

Adept adapter question

Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, fields a question from a shop truing its diamond wheels offline, then remounting them onto the non-tapered spindle without using an adapter. The shop wondered whether its tight wheel tolerances negate the need for an adapter in the 31st episode of the video series.

A sticking point

A shop that grinds tungsten carbide with resin-bonded diamond wheels sought help to settle a disagreement over how hard to stick the wheel. Now that there are machines with auto-stickers, shop staffers are even more confused. Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, offers some suggestions in the 34th episode of the video series.

Grinding Doc takes a closer look

Dr. Jeffrey Badger, the host of Cutting Tool Engineering magazine's Grinding Doc Video Series, takes a closer look at a string of photos he has taken at extreme magnifications to better understand what's happening to the wheel surface in a variety of grinding applications. He shares a number of those photos in the 35th episode of the video series.

Nitty gritty on chatter

A wheel supplier urged a shop to use a 150 mesh grit wheel to put a 0.005" radius into a part, but when the shop went from its 80 mesh grit to the smaller grit the result was horrific chatter. In fact, the shop always gets chatter from small grit wheels. For some explanation, the shop wrote to Dr. Jeffrey Badger, the host of Cutting Tool Engineering's Grinding Doc Video Series, for the 36th episode of the video series.