Tooling & Workholding

Turning Tools
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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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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.

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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.



Sumitomo Electric Carbide turning grades

Turning Grades Resist Fracture

By: Edited by Stephanie Monsanty
The AC6030M and AC6040M turning grades from Sumitomo Electric Carbide feature the company’s Absotech coating to improve resistance to wear, adhesion and fracture, and extend tool life.

Iscar Launches Grooving and Turning Tool with Side Clamping

By: Lori Beckman (editor)
Iscar has introduced the GEHSR/L-SL tool family for Swiss-type and screw machines.

Parts, Tooling and Attachments for Multi-Spindle Screw Machines

By: Edited by Jedd Cole
Champion Screw Machine Engineering offers parts and services for the multi-spindle screw machine industry, including replacement parts, tooling and attachments.

Chipbreaker for Small Tool Turning

By: Lori Beckman (editor)
Sumitomo Electric Carbide Inc. has expanded its tooling offering for precision machining applications. 

FLP Tooling Applitec Swiss cutting tools

High-Precision Carbide Cutting Tools for Swiss-Type Automatic Lathes

By: Edited by Stephanie Monsanty
FLP Tooling Inc. will showcase its high-precision line of Applitec Swiss cutting tools including carbide inserts, toolholders, saw blades, boring bars, drills and end mills.


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