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Benchmarks in the machining of automotive parts
2022-12-12
Benchmark is used to determine the position of other points, lines, surfaces on the basis of points, lines, surfaces, according to the different functions of the benchmark can be divided into two categories of design benchmarks and process benchmarks. Parts processing time to comply with these two benchmarks, so that the processed parts can meet the standard.
Parts machining design benchmark refers to the parts map used to determine the location of other points, lines, surfaces of the benchmark, such as bushings parts, the design of the outer circle and the inner hole of the design benchmark is the axis of the parts, the end face A is the design of the end face B, C benchmarks, the inner hole of the a-axis is the radial runout of the outer circle of the benchmark. The parts processing technology benchmark is the parts in the processing and assembly process used in the benchmark, according to the use of different is divided into assembly benchmarks, measurement benchmarks and positioning benchmarks of three categories. One of the parts assembly reference can be used in the assembly to determine the position of the parts in the parts or products in the benchmark.
Components processing parts measurement reference is mainly used to test the size of the processed surface and the position of the benchmark, such as the bore axis is to test the radial runout of the measurement of the benchmark; surface A is to test the length of the measurement of the benchmark, ruler. The positioning reference is the benchmark used for workpiece positioning, as the positioning reference surface or line, point, in the road process can only choose the unprocessed surface of the blank, in the subsequent processes can be used in the process of the processed surface as a positioning reference.
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