Feature Article

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.

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.

HSK toolholding affects rigidity, accuracy, and repeatability. This guide explains the practical reasons shops choose HSK and what they need to understand before standardizing it.

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.

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.

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.

Tramp oils, which are machine lubricants and hydraulic fluids that find their way into the coolant, can seriously hinder the coolant's performance. This article discusses the properties and components of machine maintenance fluids that can ensure their easy separation and removal from the coolant.

Machining ceramics is considered a difficult and costly operation. With the growing use of ceramics, shops are anxious to find cost-effective ways to work with the materials. This article discusses attempts by researchers to achieve maximum metal-removal rates without damaging the workpiece.

Representatives of management, labor and the government are working together to arrive at a workable regulation to reduce shop-floor exposure to metalworking fluid mist. This article reviews the debate and looks at ways shops can reduce their own workers' exposure.

Tap and tapholder manufacturers have introduced technology to speed up the inherently slow tapping process. This article reviews a number of innovations, including tension/compression holders for rigid tapping, self-reversing tapping heads and quick-change tapholders.

This report of a Cutting Tool Engineering survey charts the shift in the way shops are purchasing tools. As the survey's findings indicate, an increasing number of tools are being bought directly from manufacturers and many shops are narrowing down the number of tool suppliers they do business with.

This article discusses the reasons students are not choosing to become machinists, and it reviews some of the measures being taken to recruit and train workers for tomorrow's shops. The programs reviewed are designed to encourage an interest in manufacturing, teach shop basics and ensure the quality of those entering the workforce.