Zone: Turning Tools

OVERVIEW: Turning involves a fixed and non-rotating cutter, because in turning, the workpiece spins instead of the tool. Turning tools typically consist of a replaceable insert in a turning tool body. The insert can be distinctive in a number of ways, including shape, material, coating and geometry. The shape can be round to maximize edge strength, diamond-shaped to allow a sharp point to cut fine features, square, or even octagonal to increase the number of separate edges that can be applied as one edge after another wears out. The material is typically carbide, though ceramic, cermet or diamond inserts can be applied to more demanding applications. A variety of protective coatings also help these insert materials cut faster and last longer. The geometry of the insert generally relates to its cutting angles, though the tool may also include a complex chipbreaker pattern that prevents long unbroken chips from becoming entangled in the cut. The turning tool body generally does not feature quite so much engineering, but even here there are a range of choices for fine-tuning the process. Quick-change tools involve modular bodies that allow replacement tool bodies to be swapped in and out and locked in place quickly to minimize setup time. The turning tool body can also channel high-pressure coolant more effectively to the cutting edge of the tool.

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form tool

Video: Form Tools On CNC Lathes

Form tools are traditionally associated with non-CNC machines, but in certain applications they make sense on modern machines as well....MORE

Centerline Issues for Turning Inserts

Tooling experts Mike Fagan and David Grant suspect that many programmers and machinists could use a refresher on the importance and effects of insert alignment in turning operations. This short, amply-illustrated paper is their effort to clear up some of the misunderstanding. ...MORE

Turning Exotic Materials

Heat-resistant superalloys and titanium alloys are difficult to machine. This overview looks at machining demands and some recent developments that have elevated performance and process security in turning these materials. ...MORE

Seco’s CBN Grades for Hard Turning Applications

Seco Tools’ latest cubic boron nitride (CBN) grades CBN010 and Secomax CBN060K are for turning hardened steels and other hard materials. ...MORE

Video Highlights Extreme Part-Off Demos

The strength of a tough part-off tool is shown in video showing it parting off a railroad rail and sledgehammer head. Talk about significant interrupted cuts… ...MORE

An Extreme Part-Off Demo Returns to IMTS 2014

The strength of part-off tools is shown in demonstrations whereby they part off a railroad rail and sledge hammer head. Talk about significant interrupted cuts… ...MORE

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