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在工作图上,不但要正确地标注机械零件加工的尺寸,注明表面的加工符号和尺寸公差等,而且还需要说明它的技术条件。这些技术条件一般都是用文字来说明。因此,我们每一个机械工人,要学会看懂工作图,就必须明白工作图上所注明的技术条件。如果看不明白,我们就无法进行加工,就容易产生废品。我们知道,加工后合格的零件,它不仅是形状和尺寸符台了图纸要求,而且各项技术条件也达到了图纸的要求。机械零件加工制造的技术条件,主要包括有:尺寸精度(即公差和配合);几何形状的偏差;部分的或者全
On the work chart, not only to correctly mark the size of mechanical parts processing, indicating the surface of the processing symbols and dimensional tolerance, etc., but also need to explain its technical conditions. These technical conditions are generally written in words. Therefore, every one of our mechanics must learn to understand the working drawings and must understand the technical conditions stated on the work drawings. If you do not understand, we can not process, it is easy to produce waste. We know that after the processing of qualified parts, it is not only the shape and size Fu Tai drawings requirements, and the technical conditions have also reached the requirements of the drawings. Mechanical parts manufacturing and processing of the technical conditions, including: dimensional accuracy (ie, tolerance and cooperation); geometric deviation; some or all