Image measuring instrument skills one or two

Image measuring instrument angle measurementtechniques: linear regression deviation. There are a lot of testing personnel reaction, in the measurement ofangle, repeatability is poor, the same way the same person, two times repeated measurement error to achieve more than 0.5 degrees. A lot of image measurement software, including three coordinate measuring software, linear acquisition is the default fortwo. For some of the more rules, part linear better, toolarge error caused by not, but the line is not good, burrmore parts, two acquisition linear methods will bring large error, and the repeatability is poor, such a straight line angles, multiple measurement repeatability iscertainly not good. Image measuring instrument if we usemultiple methods for linear regression to determine theangle of both sides, the line will be closer to the actualline of the measured workpiece, linear error will be reduced, at the same time, measurement error willreduce many, measurement repeatability is greatly improved.

Image measurement grating precision two skills: reading accuracy of image measuring instrument is determined byimage measuring instrument of grating ruler, two dimensional measuring instrument of grating ruler is divided into fixed grating and grating. Fixed grating andgrating by them because the position relations have ablack and white stripes, called the Moore stripes. Set fordetecting component they produce Moore fringe opticalmeasuring instrument to calculate the displacement of grating and grating.