Abstract: Difficulties of a largescale special parts in the manufacturing process were analyzed. The design principle of virtual digital Process Equipment measuring platform was discussed, which based on the laser tracking digital measuring and positioning technology. Combined with an example, the application of measuring platform in the manufacturing process of largescale special parts was explained in detail, and the coordinate array control method was adopted to solve the difficulties in manufacturing process. By the verification in practice, the measuring platform can effectively assist the manufacture of largescale special parts and effectively control the quality

Key words: The large scale special parts, Laser Tracker, Virtual digital Craft Equipment, Control
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