Figure 1 is a schematic diagram of the large end machining of the sleeve shaft for diesel locomotives produced by our factory. The 30 (?) size in the figure is obtained after processing the A±α hole, but since the measurement standard and the processing standard do not coincide, and because the number of products is small, it is uneconomical to manufacture a special measuring tool, which brings a lot of processing and inspection to workers. trouble. This kind of problem is often encountered in multi-variety small batch production workshops. The ideal solution is
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