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[Gear] Coal Shearer boring machine accuracy problems you know how much?
Coal Shearer boring machine gear precision gear refers to the shape of the integrated error divided one level, including the tooth, the tooth, diameter jumping and other important parameters, which refers to the radial shape of the tooth is teeth, tooth refers to the longitudinal shape of teeth, diameter hop refers to the distance between the teeth of two adjacent error, we generally automotive gear hobbing processing is completed by 6 to 7 can be used, and some of the press due to the need for high-speed operation and batch printing, high-precision gear they need to reduce the accumulated gear error leaving the printing effects caused by the decline, while domestic production grinding to level 4-5 processability, imported high-precision grinding machinability to 3, grade 3-4, and some can be processed to level 2. Japan is equivalent to the standard DIN 0 grade 4 grade Chinese evaluation, general error in μm units, 1μm = 0.001mm.
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