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Know Your Boring Processes

Boring is a process used to make a drilled or cast hole larger with a single boring head or a point-cutting tool. The process starts by drilling a hole in the part, then using tools such as awls, gimlets, or augers to enlarge it. An awl is the simplest tool, as it pushes material aside rather than removing it. In contrast, drills, gimlets, and augers have cutting edges that remove material to create the hole. Below are some common types of boring. 

Jig boring is used when a hole needs to have an exact diameter and be placed very precisely. A vertical jig boring machine lets the operator adjust the cutting tool with high accuracy, keeping tolerances within ±0.005 mm (±0.0002 inches).

Vertical boring is mainly used to make large holes. During this process, the workpiece rotates on a horizontal table. Vertical boring mills can also perform turning, facing, tapering, and both internal and external threading.

Horizontal boring has three main types, table, planer, and floor. The table type is the most common and versatile. This method creates a very accurate cylindrical surface as it enlarges the hole. Drilling and milling are done on a workpiece clamped horizontally, while a movable column supports the spindle headstock and the workpiece holder.

Line boring is called align boring, is a machining process used when bores need to be perfectly straight and aligned.

Universal DeVlieg provides tool-holding and high-precision boring solutions for the machine tool industry, serving many different customers. With over 32,000 active part numbers, more than 10,000 standard items, and a skilled technical support team, the company offers strong design engineering expertise. For more information, contact This email address is being protected from spambots. You need JavaScript enabled to view it., call 877.308.3077, or visit universaldevlieg.com.