在零件加工的过程中,为了掌握加工零件的尺寸大小、精度,都要对各种尺寸参数进行测量,获得测量结果,并以之作为分析判断和决策的依据。传统的测量方法多是接触型的测量方法,不仅效率低而且容易损伤被测物。伴随视觉技术和激光技术的发展,基于现代视觉技术的几何特征测量已成为高速生产系统中快速、准确、全面的对产品几何尺寸控制的新方向。在产品开发中,测量技术的作用显得日益重要。目前在精密计量检测领域,测量精度已从原来的微米量级发展到纳米量级,对更微细加工形状的检测也受到更多关注。不但对产品的精度质量如形状尺寸、表面粗糙度、圆度等提出了更高的检测要求,而且用于验证加工机床本身精度的各种检测技术也在不断进步。 In the process of parts processing, in order to grasp the size and precision of the machined parts, various size parameters should be measured to obtain the measurement results, and use them as the basis for analysis and decision-making. Traditional measurement methods are mostly contact-type measurement methods, not only inefficient and easy to damage the measured object. With the development of visual technology and laser technology, the measurement of geometric features based on modern visual technology has become a new direction of product geometry control quickly, accurately and comprehensively in high-speed production system. In product development, the role of measurement technology becomes increasingly important. At present, in the field of precision measurement and measurement, the measurement accuracy has been developed from the original micron level to the nanometer level, and more attention has been paid to the detection of more finely-processed shapes. Not only the quality of the product such as shape and size, surface roughness, roundness and so put forward higher testing requirements, and used to verify the accuracy of the processing machine itself, a variety of testing technologies are also making progress.