How to choose an internal grinding wheel?
First,The diameter of the inner grinding wheel should not be too large or too small
When grinding the inner hole, if the diameter of the grinding wheel is too large, the contact arc between the grinding wheel and the workpiece increases, which increases the grinding heat and makes it difficult to cool and remove. If the diameter of the grinding wheel is too small, it is difficult to achieve the ideal grinding speed (30m/s~50m/s), which increases the grinding thickness, increases the friction of the abrasive grains, and is easy to blunt, which increases the surface roughness of the inner hole, the production efficiency is reduced.
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In order to obtain a good grinding effect, the diameter of the grinding wheel and the diameter of the inner hole should maintain an appropriate ratio, which is usually between {{0}}.5 and 0.9. When the hole diameter is small, as long as the problem is that the peripheral speed of the grinding wheel is low, the larger ratio should be taken at this time; when the hole spacing is small, the main problem is the difficulty of cooling and chip removal, and the smaller ratio should be used at this time.
Second,The width of the inner grinding wheel should not be too wide or too narrow
During internal grinding, if the width of the grinding wheel is too narrow, the grinding wheel is easy to wear, which is not conducive to improving the production efficiency and reducing the surface roughness; if the grinding wheel is too wide, the grinding force will increase, which will easily cause the bending deformation of the long axis of the grinding wheel. Therefore, when grinding the inner hole, the appropriate grinding wheel width should be selected.
