Our factory M1080 centerless grinding machine, due to the failure of the flow relay, the spindle is started under the condition of insufficient lubricating oil, and there is a serious "hugging axis" phenomenon. According to the conventional repair method, after 10 pieces of bushings are roughly scraped into a basic thickness (the purchased bearing bushes are all semi-finished products), the fine scraping is performed. After many tests, super-fine grinding usually takes about 20 days to complete. After analysis, the installation positions of 10 bearing bushes are different, and the required scraping precision is also different. The different parts of the same tile have different precision requirements. Therefore, I used a method of group scraping. It took only 4 days to repair the grinding wheel head frame of the grinding machine, so that the accuracy of the spindle reached or exceeded the overhaul standard. The repair method is as follows:
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