Our factory is a professional manufacturer of natural gas engines. It encounters a problem in the precision of the spindle hole of the machine. Because the concentricity of the five holes is to be ensured, a long mast is used to penetrate into the hole of the desired hole at the same time. First, the good knife is plunged from the end face of the hole to a depth of about 2 mm, and then the machine is stopped for measurement. Because the hole is inserted into the hole, it cannot be measured with a caliper and other energy devices, so the caliper is used, and the efficiency is low.
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