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Article February 1, 1999 E. Gorzkowski

Machinability of Sintered Steel: Drilling Performance

Researchers from Lehigh University report the results of drilling tests conducted using sintered steel samples. The samples were prepared using different machinability-improving additives. The results showed that sintered steel with low-alloy steel and resulferized sintered steel are nearly as machinable as wrought steel.

Article February 1, 1999 Gregory S. Antoun

The Pressure’s on to Improve Drilling

The author explains how high-pressure, high-volume coolant can provide better control of chips and temperature during drilling operations. He also describes the tools, equipment and shop procedures that can ensure top performance from a high-pressure coolant system.

Article December 1, 1998 Martin Eastman

Learning With an Edge: General Industry Coverage

Using his students as researchers, an industrial-arts teacher sets up an experiment to test claims being made for tool resharpening using cubic boron nitride wheels. The experiment taught the students how to keep a log of tool conditions, use and sharpenings as they gathered data for their study.

Article December 1, 1998 Keith Mills

CMM Made Easy

Next-generation CMM software offers users a simple interface, the ability to program the machine directly from CAD data files and the opportunity to write programs off-line. This article describes the latest advancements in CMM software and shows how older machines can be retrofitted to take advantage of the software's features.

Article December 1, 1998 Austin Weber

Staffing Shortage Stymies Metalcutting Shops

An exclusive survey finds shops struggling to locate and hire skilled labor. This report of the survey's findings also reveals the most popular techniques to ease staffing woes.

Article October 1, 1998 Rober Marvin

Single-Pass Bore Finishing: General Industry Coverage

Superabrasive bore finishing can achieve results in one pass that rival the finishes produced in several passes by other bore sizing operations. This article recounts how a number of shops have used superabrasive tools to finish bores with a higher degree of quality and a lower overall cost per piece.

Article October 1, 1998 Robert Eade

Fixturing Advances Hold New Promise

This article reviews the fixturing innovations users are beginning to see on the market. Some of the discussion focuses on the design criteria that has emerged out of an ongoing NIST-funded study.

Article October 1, 1998 Wes Emerson

Pipe Tapping: Guide to Taper Pipe Threads

Pipe tapping is one of the more demanding threading operations because taper threads raise alignment, sealing, and tool-load requirements. This guide reviews the tools and techniques used to produce taper pipe threads reliably.

Article October 1, 1998 Paul H. Cohen

Cryogenics Goes Deeper: Drilling Performance

A new cryogenic tool treatment subjects tools to minus-320-degree temperatures by immersing them in a bath of liquid nitrogen. This article details the procedure and offers test results from the laboratory and the field that show how the treatment can extend tool life.

Article September 1, 1998 Matthew Mueller

Precision In Their Pocket: General Industry Coverage

Researchers using computer simulation and refined probing techniques attempted to mill a pocket as accurately as possible. This report tells how the researchers used their high-tech tools and how close to perfection they came.

Article September 1, 1998 Robert Eade

Opening the Door to Greater Control

This article charts the gradual move by CNC manufacturers from proprietary hardware-based machine controllers to open, software-based systems. The article also reviews recently developed controllers that represent steps in the direction of totally open controls.

Article September 1, 1998 Mike Yates

Manual Mills Get CNC Makeovers

A manual milling machine can be retrofitted with a CNC system for about one-fourth the cost of a brand new CNC machine. This article discusses the pros and cons of retrofitting and provides guidance to determine when retrofitting is the most appropriate solution.

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