The “DIN 179 Cylindrical drilling bushes” standard developed by the German Institute for Standardization (DIN) describes a procedure for testing cylindrical drilling bushes made of special-use steel and hardened and ground according to the intended use. Thanks to their cylindrical shape, these bushings can be pressed adjacent to the housing.
Cylindrical drilling bushings are generally produced in two different forms:
The dimensions listed in this standard are only a selection of DIN standards. For applications involving positioning, the combination with guide pin is recommended.
Drilling bushings or positioning bushings are practical standard units that help guide the drill bit directly into the drilling fixture. The use of drilling bushings thus facilitates and optimizes the drilling process at the workplace. It has versatile usage possibilities.
Drilling and positioning bushings enable standard drilling and simplified positioning applications in mechanical and systems engineering. Bushings are widely used in different industries such as the automobile industry.
Cylindrical drilling bushings are an important element in most drilling machines today. They serve as precision guiding devices for shank-mounted cutting tools such as drills, reamers, taps, countersinks and similar. In general, cylindrical drill bushings serve three purposes: locating, guiding and supporting the cutting tool. Although they serve as guides for cutting tools, drill bushings have other uses as well. They work well in assembly tools, inspection instruments, and similar devices that require precise alignment and positioning of cylindrical parts.
Drill bushings are often used in jigs and fixtures to provide precision and repeatability in drilling operations, helping to maintain correct alignment and position of the drill bit as it enters the workpiece. This is necessary to produce correctly sized and appropriately positioned holes.
Standard drilling bushings are available in a variety of types and styles, each designed to work best with specific manufacturing applications.
In short, drilling bushings make it possible to drill workpieces quickly without having to pre-measure and mark the drilling points each time. These practical auxiliary tools direct the drill directly to the drilling mechanism, thus preventing the drill from moving in addition to providing a drilling pattern suitable for the desired dimensions.
Compared to a manually guided drilling process without a mechanism, this process is significantly facilitated by the drilling bush and a much cleaner result is obtained by providing a constant entry angle.
Cylindrical drilling bushings are manufactured from hardened and ground special steel. In this way, it has high quality and a very long service life.
Among the numerous testing, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides testing services defined in the "DIN 179 Cylindrical drilling bushings" standard, with a trained and expert staff and advanced technological equipment.
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