A hone is a machine tool used in the manufacture of precision bores to improve the geometry, surface finish and dimensional control of the finished part. This process is called honing. A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by the selective removal of metal. ... Drill bits are cutting tools used to create cylindrical holes. ...
Typical applications are the finishing of cylinders for internal combustion engines and air bearing spindles. Types of hone are many and various but all consist of one or more abrasive stones that are held under pressure against the surface they are working on. A piston and cylinder from a steam engine A cylinder in an internal combustion engine is the space within which a piston travels. ... An internal combustion engine is an engine that is powered by the expansion of hot combustion products of fuel directly acting within an engine. ... An air bearing is a bearing that literally consists of a layer of atmospheric air used as the working fluid for a fluid bearing. ... An abrasive is usually a material that is used to smooth, machine, or, in some cases, roughen another softer material through extensive rubbing. ... Pressure (symbol: p) is the force per unit area applied on a surface in a direction perpendicular to that surface. ...
The hone is usually turned in the bore while being moved in and out. Special cutting fluids are used to give a smooth cutting action and to remove the material that has been abraded. Machines can be portable, simple manual machines, or fully automatic with gauging depending on the application. Cutting fluid or coolant is liquid used to cool and lubricate the cutting edges of machine tools and the pieces they are shaping. ... It has been suggested that Gauge (engineering) be merged into this article or section. ...
Modern advances in abrasives have made it possible to remove much larger amount of material than was previously possible. This has displaced grinding in many applications where "through machining" is possible. External hones perform the same function on shafts.
Other similar processes are lapping and superfinishing. Lapping is an abrasive machining operation. ...
Hone Wiremu Heke Pokai (?-August 6, 1850) was a Maori chief and war leader in New Zealand.
Subsequently he, his wife and children were converted to Christianity and Hone became a lay preacher.
Furthermore it became clear that the British considered the authority of the chiefs to be subservient to that of the Crown although the treaty promised equal partnership.
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