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What are Boring Turning and Boring Milling?
Boring is used to accurately enlarge an existing hole in a part. On a turning lathe, boring is usually simpler than on a milling machine. A boring bar on a lathe can create holes of any size, if the bar fits. In contrast, boring heads for milling machines have a more limited range.
The basic boring bar is essential equipment in any machine shop. It is commonly used for most jobs and offers a cost-effective solution with just one point of contact with the workpiece. The main drawback is that, because it is unsupported, chatter or vibration can happen.
The main difference between using a boring bar on a lathe and on a milling machine is that the milling machine needs an adjustable boring head. This adds some complexity to the setup. The basic boring head on a milling machine moves the boring bar from the center of the hole to the needed diameter. The machinist can mount the boring bar in different positions to bore various hole sizes with these affordable heads.
Boring heads are mainly used on conventional milling machines, but they can also be used on CNC machines. Boring on a mill lets you use more than one cutting edge, which is common in high-volume production. You can set up two boring heads in two ways: set both cutting edges to the same diameter for a faster feed rate, or set them to different diameters to remove more material per pass.
Universal DeVlieg offers innovative, cost-effective tool holding and high-precision boring solutions for the machine tool industry, serving a wide range of customers. We have more than 32,000 active part numbers, over 10,000 standard items, and a technical support team with top-level design engineering expertise. For more information, contact us at This email address is being protected from spambots. You need JavaScript enabled to view it., call 877.308.3077, or visit universaldevlieg.com.