Eagle Group Blog | CNC Machining

Heat Treatment in CNC Machining

Posted by Bill Seyferth on 2023 Jul 18

In this article, we’ll discuss how experienced machine shops like Eagle CNC think about the complex relationship between heat treatment and machinability. Determining where heat treatment fits into the CNC machining process is a vital consideration for machining parts to net shape quickly and cost-effectively.

Eagle CNC is the Eagle Group’s state-of-the-art machine shop, specializing in CNC machining of both ferrous and nonferrous castings, forgings, bar stock and burn outs. At Eagle CNC, we machine new parts directly from raw stock, or from parts that have been shell cast or investment cast by our sister companies, Eagle Alloy and Eagle Precision. While our workpieces start in a variety of states, nearly every product we machine undergoes heat treatment before delivery.

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Tags: CNC Machining, Eagle CNC, Metallurgy, Heat Treatment

Learn to Speak Our Language: Metalcasting & CNC Machining Jargon

Posted by Deb Pipoly on 2020 Jul 8

Metal manufacturing professionals are a close-knit community, and just like any specialized group, we've developed our own way of speaking. To outsiders, many of whom are our friends, family and customers, metalcasting & machining lingo might seem like another language entirely. Here, we aim to demystify metalcasting & machining jargon so anyone can join the conversation.

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Tags: Metalcasting, Glossary, CNC Machining

CNC Machining Fixed Costs: Tooling

Posted by Nik Seyferth on 2020 Mar 31

At the Eagle Group, we provide full-service metalcasting and CNC machining from start to finish. Part of our responsibility as a supplier is to estimate part price for each new product. One of the largest line items affecting final part price on any job is tooling. In metalcasting, tooling often comprises patterns used to create molds and cores. In CNC machining, tooling can refer to work holding fixtures, tool holders, cutting tools or tool inserts.

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Tags: CNC Machining, Tooling

New Resource for Manufacturers: CNC Machining Process Guide

Posted by Nik Seyferth on 2020 Feb 4

The latest resource from the Eagle Group focuses on CNC machining and high-tech inspection. Our ebook CNC Machining Process Guide dives into the history, current practices and processes of CNC machining and advanced metrology. Perfect for anyone looking for a better understanding of precision machining in the 21st century, our new resource is available now as a free download.

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Tags: Machining, CNC Machining, Metrology

Ebook for Manufacturers: Metalcasting & CNC Machining Process Guide

Posted by Deb Pipoly on 2019 Nov 5

A new ebook from the Eagle Group provides an introduction to key processes in metalcasting and CNC machining.

This 31-page document is available as a free download, and is geared toward manufacturing professionals who are interested in exploring the possibilities of casting and machining.

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Tags: Metalcasting, Machining, CNC Machining

What Precision Machine Shops Do: Broaching

Posted by Nik Seyferth on 2019 Jul 9

Broaching is a machining process using a cutting tool with teeth that increase in size from front to back. In many cases, an entire surface (or multiple surfaces) can be finished in a single pass with broaching. The technique is most often applied to finish holes, splines and flat surfaces.

Broaching is a relatively new machining process, developed in the 1850s with metal-specific applications. Originally, broaching was used to perform work on internal characteristics, like keyholes in pulleys and gears. During the 20th century, broaching was further developed for use in firearms, and subsequent developments have dramatically improved tolerances and made broaching more versatile for modern machine shops.

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Tags: Processes, Machining, CNC Machining, Eagle CNC, What Precision Machine Shops Do, broaching

What Precision Machine Shops Do: Sawing

Posted by Nik Seyferth on 2019 Jun 25

Sawing is one of the oldest cutting techniques in use today, and innovations have allowed the process to keep up with advances in material, tolerances and product complexity. By definition, sawing is cutting a narrow slit in a workpiece by moving a toothed or abrasive cutting tool against the surface. Sawing is often used to remove large sections of material without particular concern for tolerances, but modern CNC sawing machines can be used for finishing work as well.

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Tags: Processes, Machining, CNC Machining, Eagle CNC, What Precision Machine Shops Do

What Precision Machine Shops Do: Boring

Posted by Nik Seyferth on 2019 Jan 30

Boring may not sound like a very exciting topic, but don't let names deceive you: boring is one of the most widely used techniques in machining, and one of the most reliable ways to finish holes.

Boring is the process of enlarging and finishing pre-existing holes. The holes might have been cast, drilled or otherwise formed to a rough state, but boring is often the best technique to provide the accuracy and repeatability expected of CNC machined parts.

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Tags: Machining, CNC Machining, Eagle CNC, What Precision Machine Shops Do

What Precision Machine Shops Do: Drilling

Posted by Nik Seyferth on 2018 Nov 14

Drilling is one of the most common techniques used in manufacturing to create holes. In contrast to other hole-making methods like boring, reaming and tapping, drilling is most often used to create holes in unbroken surfaces. In precision CNC machining, drilling can range in scope from simple, rough hole drilling to complex, multi-feature hole drilling.

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Tags: Processes, Machining, CNC Machining, Eagle CNC, What Precision Machine Shops Do

What Precision Machine Shops Do: Milling

Posted by Nik Seyferth on 2018 Jul 18

Milling is one of the most common processes in CNC machining, most likely because it is so versatile. Using a single tool, machine shops can create nearly limitless shapes on the surface of a workpiece. Milling can completely transform a piece of metal stock into a finished part of nearly any complexity.

The milling process in CNC machining consists of removing material with a rotating cutting tool. Unlike turning, the workpiece does not need to rotate in milling operations. In some cases, the workpiece will move linearly against a cutting tool; in other cases, the workpiece will remain stationary while the cutting tool moves. 

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Tags: Processes, Machining, CNC Machining, Eagle CNC, Milling, What Precision Machine Shops Do

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