Tooling & Workholding

Turning Tools

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.

» Titanium and HRSA Machining

Machine Tool Database

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Featured Zone Content

hard machining

Success Factors for Hard Turning

A rigid machine and hard cutting edge are the beginning. Other considerations relate to system rigidity and keeping the cutting force steady.

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.

Custom step drill

See The Tool's Value Instead Of Its Cost

This company is embracing high-performance tooling on its turning centers. The "sticker shock" is no reason not to do this. In one case, though, the shop found a way to limit the cost of the tool and increase productivity at the same time.

Tungaloy DoMiniTurn toolholder

Expanded Toolholders for Swiss-Type Lathes

By: Edited by Jedd Cole
Tungaloy has expanded its DoMiniTurn line of external toolholders for Swiss-type lathes.

Sandvik Coromant GC3225 GC3210

Turning Grades for Cast Iron Extend Tool Life

By: Edited by Jedd Cole
Sandvik Coromant introduces the GC3225 and GC3210 insert grades, designed to cover all cast iron turning operations for both gray and nodular cast iron materials.

SH75 PVD Grade for Small Part Machining on Swiss Lathes

By: Lori Beckman (editor)
When machining small parts on a Swiss lathe, an insert with a sharp cutting edge and low cutting force is essential.

Re-Turning Adds Life to Train Wheels

By: Chris Koepfer (editor)
Tech Brief

Horn type-842 cartridge system

Cartridge System Eliminates Face Milling after Parting Off

By: Edited by Jedd Cole
Horn has added a type-842 cartridge system featuring smaller dimensions for machining smaller workpieces to its 940 modular grooving system comprising a basic holder, a grooving toolholder and a cartridge.

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