Milling Tools

Milling produces a flat or contoured surface on a workpiece with a rotating tool. The work can be done on a machining center or milling machine, and can also be done on a turning center that has rotary or “live tool” capabilities. The tools for milling include both solid tools and “indexable” tools—the latter consisting of a tool body that uses replaceable cutting inserts. Carbide is the most likely material for milling tools, though other options include high speed steel as well as, ceramic, cermet and diamond tools for certain more demanding applications. The end mill can be flat-bottomed for flat surfaces, or ball-nosed for milling up contoured shapes. 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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A New Spin on CNC Machining Face Grooves

Here is an alternative to standard end milling — an operation performed on a CNC milling machine to produce circular grooves in the part face. This new single-point trepanning tooling strategy can produce both symmetrical and asymmetrical face grooves, too, and perform fly cutting.

When a Swiss-Type Is a Lathe and a Five-Axis Mill

Swiss-type lathes with a swiveling B axis enable this shop to machine parts complete and unattended that it otherwise couldn’t using its five-axis machining centers. Here is some of what it learned adopting this new technology.

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