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A typical example of a 'Burraway' tool, deburring the back of a hole. Mechanical deburring is a deburring process that either mechanically grinds a burr off of metal or rolls the edge of the dangerous slit or sheared metal burrs into itself.
In manufacturing, a countersink (symbol: ⌵) is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common use is to allow the head of a countersunk bolt , screw or rivet , when placed in the hole, to sit flush with or below the surface of the surrounding material (by comparison, a counterbore makes a flat ...
It is especially useful for working softer metals such as aluminum, copper, and mild steel. Another name for it is "maintenance reamer", referring to its use in the miscellaneous deburring and enlarging tasks often found in MRO work. A similar tool can be seen on select Swiss Army knives, such as the electrician model, to be used on conduit.
Such operations can be done with boring bars reaching through a hole while shifted off-center, then shifting onto center for the cut (for example, in the G76 fine boring cycle), or with back-deburring style tools whose cutting edges open and close in umbrella-like or check-valve-like fashion.
The scraper in the center of the image is a three corner scraper and is typically used to deburr holes or the internal surface of bush-type bearings. Bushes are typically made from bronze or a white metal. The scraper pictured at the bottom is a curved scraper. It has a slight curve in its profile and is also suitable for bush bearings ...
A ballizing tool consists of one or more over-sized balls that are pushed through a hole. The tool is similar to a broach, but instead of cutting away material, it plows it out of the way. [1] Ball burnishing is also used as a deburring operation.