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Surface roughness teaching template
Most machined surfaces must control microscopic geometry errors, ie surface roughness. Because it has a great influence on the performance and life of the part, in order to ensure the quality of the part, the surface roughness of the part must be assessed. There are currently two methods for assess ....
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New elastic positioner
When grinding the valve root arc (Fig. 1), we need a positioner that can be positioned axially and radially, and can clamp the valve for grinding. In the past, we used the ordinary spindle tip sleeve to position the 60° inner cone surface and the valve disc end chamfer. The positioning accuracy ....
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Silicon nitride ceramic cutter
The metal cutting industry is a very important sector in the national economy, and it is inseparable from all walks of life. According to the statistics of 1988, the cost of cutting and processing in the United States is as high as 100 billion US dollars per year, of which the cost of cutting tools ....
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Reaming method
In machining, it is often necessary to use a reamer for reaming. Especially when reaming with a new reamer, it is often caused by the tool. This is because the standard cylindrical reamer usually has a diameter of 0.005 to 0.02 mm. The amount of grinding, the roughness of the land is high, and can ....