Based on accurate measuring device of third -class metal line footage number of CCD vision raster pattern

The utility model discloses a based on accurate measuring device of third -class metal line footage number of CCD vision raster pattern. The straight steel ruler passes through the horizontal fixed mounting of fixture device on the level flat base, and axial motion control system includes lead screw, screw -nut and the motor of cover on the lead screw, the output shaft and the lead screw coaxial coupling of motor, and lead screw horizontal installation is in straight steel ruler top and parallel with the straight steel ruler, raster pattern measurement system includes reading head and grating chi, and reading head and the equal fixed mounting of CCD visual system are on axial motion control system's screw -nut, the HMI man -machine interface display screen is connected to the CCD visual system, PLC industry control system is connected with axial motion control system's motor, raster pattern measurement system's reading head and HMI man -machine interface display screen respectively. The utility model discloses mainly having solved prior art and influenced by detection ring border and human factor, detecting reliability is low, uses flexibility subalternation problem, has improved measurement accuracy greatly.