The Study Of Structure Design And Error Analysis In Large Size Measuring Machine

In the aspect of large size components' measuring, the commonly used measuring instrument includes: Large-scale Caliper, large-scale micrometer and large-scale micro-poles. This kind of measuring instrument volume is big, unwieldy and the operation not to be convenient, to a great extent, the measuring accuracy relies on worker's technical level, the precision is unstable. So, if we want to guarantee the accuracy requirement of the large-scale is very difficult. Uses the large-scale coordinate measuring, can only examination off-line; Uses the laser dual-frequency interferometer measurement, mainly uses in the measuring room demarcation or the spot-check, the efficiency is not high; Uses the laser total stations or the theodolite measuring, the cost is expensive, needs large measuring space.As a result of the large-scale components' measuring environment complex, the workers measuring operation not reliably and so on factor influences, uses the non-contact electro-optic measuring technique is the main development direction of the large size components measuring. Along with electro-optical examination technology day by day mature, the unit technology in the industry scene's universal application, for example, high speed CCD image gathering technology, the pattern recognition technology, make the real-time online large size electro-optic to measuring into possibly, In this way could enhance the measuring rate, avoids the abandonment product, simultaneously may reduce the worker labor intensity, make the measurement result to be more accurate.This article take the iron tower component as the measuring object, take realizes the online automatic detection as purpose, constructed the system frame which could realized the iron tower component electro-optic automatic detection, studied the foundation component error of the large size measuring machine; The large size measuring machine error transmits the rule analysis of every moving part; Error compensation principle and method; And carried on the organization plan design and the dummy specimen design of the large size examination machine.Through above research established the theory and the technology foundation of the large size examination's machine development.