Tooling & Workholding

Milling Tools

Milling is the work of producing a flat or precision-contoured surface on a machined workpiece by using a rotating tool, and generally by taking multiple parallel passes with that tool. The work can be done on a machining center or milling machine, and can also be done on a lathe, turning center or turn-mill machine that happens to have rotary tool (or “live tool”) capabilities. The tools for milling include both solid tools and inserted tools—the latter consisting of a tool body that uses replaceable cutting inserts. Carbide is the most likely material for milling tools, though high speed steel is another choice, as are ceramic, cermet and diamond tools in certain more demanding milling applications. A common milling tool variety is the “end mill,” which generally describes a relatively narrow cylindrical tool that can mill on both its tip and its side, and can reach into various constrained features and spaces. The end mill can be flat-bottomed for flat surfaces, or ball-nosed for milling up, down and along the contours of complex milled shapes such as die and mold surfaces. Another common milling tool variety is the “face mill,” a generally larger-diameter tool designed for efficiently milling a wide, flat surface in an economical number of passes.

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Featured Zone Content

Video: Hard Pocket Milling


Relieved end mills and pre-machining of corners are two important considerations for accurate pocket machining in hard steel.



Webinar: Increase Milling Output on Your Existing Machine

By: Peter Zelinski
It is not always the strength of the tool or the power of the machine that limits your depth of cut. In many cases, the limitation is the tendency to vibrate. Learn how to mill more productively by selecting spindle speeds tailored to your machine’s dynamics.

Lovejoy Tool Co.

Selection of Cutting Tools for Milling, Turning and Boring

By: Edited by Julianne Mobilian
Lovejoy Tool Co. will display a range of cutting tools, including face mills and ballnose end mills.

Carmex CMT Series.

Carbide Inserts Increase Tool Life in Ultra-Hard Metals

By: Edited by Julianne Mobilian
Carmex will exhibit its CMT series of vertical milling inserts. The inserts feature a multi-flute design with four to eight cutting edges and a spiral flute for low-cutting forces.

Milling Chuck Assembly Maximizes Tool Accuracy

By: Edited by Julianne Mobilian
Bilz Tool will introduce the Diebold UltraGrip milling chuck system, said to combine the highest possible cutting tool run-out (TIR) with maximum clamping force.

High-performance thread mills.

Thread Milling Cutters Deliver Coolant to Flutes

By: Edited by Julianne Mobilian
SCT offers high-performance thread mills equipped with its Cool Flute technology.


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