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.



The Anatomy of an End Mill for Titanium

By: Mark Albert
Titanium is often characterized as a “challenging workpiece material.” Certainly, machining this material is a challenge to milling machines, cutting tools and workholding accessories that are suitable for machining more common materials such as mild steel, cast iron or aluminum.

Expanded Anti-Pullout System Enables Secure Titanium Milling with ER Collet Systems

By: Mark Albert
Because of the extreme forces involved in machining titanium and other hard metals, it is necessary to take precautions to avoid pullout—the tendency for a cutting tool such as an end mill to gradually loosen in its holder and possibly be twisted out entirely.

Groove Milling Cuts Down Cycle Time for Inconel Part

By: Lori Beckman (editor)
When a shop tries to outsource a part, but no vendors want to take on the job, it’s time for that shop to figure out how to machine the job on its own.

Ingersoll Cutting Tools Hi-FeedMidi milling cutters

Milling Cutters Equipped with Through-Coolant

By: Edited by Stephanie Monsanty
The Hi-FeedMidi family of high-feed milling cutters from Ingersoll Cutting Tools is based on the company’s Hi-FeedMini, but is capable of a 0.060" depth of cut.

Toolholding System for any ER Collet System

By:
Rego-Fix’s latest versions of its secuRgrip anti-pullout toolholding system can be used in any ER collet system as well as applied in the company's milling chucks. 


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