Chris Koepfer

Chris Koepfer Editor Emeritus

Smart Boring Bar Auto-Comps

Because boring is a finishing or semi-finishing operation, there is generally little or no margin for dimensional or surface finish error. In production, dimensional accuracy of a precise bore can be negatively affected by tool wear over time.

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One Last Appeal For Your "Vote"

As I write this month's column, our presidential election is still up for grabs, a dead man is the duly elected senator from Missouri, and our soon-to-be former first lady now gets to move down the street to work in the U. S.

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Toolholder System Gives Stable Cutting

There is no doubt that machine tool spindle speeds are climbing. Just look at the standard speeds offered on machining centers five years ago compared to those speeds offered as standard today.

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Is It Just Me Or...

. has the space-time continuum been disrupted creating faster years? Am I alone in the perception that in spite of all my efforts to remain mainstream, you know.

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A New Twist On Five-Axis Machining

Cincinnati Machine and DS Technologie Gmbh (DST) announced a strategic alliance through which machine tools, service and support from both companies will be offered to the aerospace industry in North and South America through Cincinnati Machine.

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Musical Chairs. Sort Of.

I was thinking about how the metalworking shop has changed. In the way back old days machines ran off jackshafts, and leather belts provided the power to cut.

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This Hexapod You Can Work With

Take a standard knee-mill, identical to those found in thousands of shops around the world. On the backside of the mill, place a worktable. Under that worktable, attach six movable legs. Rotate the overarm of the mill 90 degrees so the spindle is above the rear worktable. You've created a five-axis knee mill.

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Why Using The Latest Technology Simply Isn't Enough

Suppliers to the automotive industry know they've got to be competitive, have consistent, repeatable quality and deliver on time, every time. Often having the latest technology is a crucial competitive advantage. But sometimes having and using the latest equipment isn't enough. Here's why.

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What's Old, New Or Real?

I remember one of the Star Trek movies, in which Kirk asks Scotty to perform an especially difficult technological miracle to save the Enterprise. Scotty replies, "Captain, I can't change the laws of physics.

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Nothing To Do With You-Know-What 2000

With all the hype and hoopla about the upcoming “event” in Chicago, I thought it might be nice to provide a respite. Obviously, it’s important from a business perspective to read this special show issue of Modern Machine Shop.

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Making The First Cut

Almost every shop has a metalcutting saw. However, many of these shops may be missing a throughput reduction opportunity by under-utilizing this cut-off step in the manufacturing process. Here's how one shop integrates precision sawing in its part production flow.

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Winner By A Nose!

Wiper technology is designed to improve surface finish in machining applications. It involves an insert with a flat. As the 'wiper' passes through the cut, it smoothes the surface.

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