Measuring device for three-dimensional coordinate values of complex bent pipe

Abstract

The invention relates to a measuring device for three-dimensional coordinate values of a complex bent pipe. The measuring device comprises a guide groove, a movable base, a fastening knob, a universal pin shaft and a laser range finder. The transverse guide grooves and the longitudinal guide grooves are connected and then fixed to the workbench through bolts. The horizontal moving base is installed in the transverse guide groove and the longitudinal guide groove, and after the horizontal moving base and the vertical moving base move to the corresponding positions, the first fastening knob and the second fastening knob fasten the horizontal moving base and the vertical moving base respectively. The bent pipe is inserted into the universal pin shaft, the first laser range finder sleeving the bent pipe measures the Z coordinate of any position of the bent pipe, the second laser range finder measures the X and Y coordinates of the position, and the measured three-dimensional coordinate value of any point of the bent pipe is compared with the theoretical coordinate value of the position, so that whether the bent pipe meets the requirement or not is judged. The method for correcting the bent pipe which does not meet the requirement comprises the steps that bending is conducted again, and after bending is completed, the three-dimensional coordinate value of the bent pipe is measured again and compared with the theoretical coordinate value till the size of the bent pipe meets the requirement.

Description

technical field [0001] The present application relates to a device for acquiring the size of a complex curved pipe, in particular, to a device for measuring the three-dimensional coordinates of a complex curved pipe. Background technique [0002] Defects that often occur during the bending process of pipe fittings mainly include elliptical deformation at the arc, thinning of the outer wall of the arc, and bending springback. The way and location of the first two defects are different depending on the radius of the pipe bend. The influence of the defects can be reduced by modifying the parameters of the pipe bending equipment, but the elastic rebound of the bent workpiece is unavoidable. [0003] The existence of bend pipe defects will have a great impact on the quality of the bend pipe. Among them, the rebound phenomenon will inevitably make the bending angle of the pipe material larger than the predetermined angle, thereby reducing the precision of the pipe bending process...

AI Technical Summary

Problems solved by technology

Among them, the springback phenomenon will inevitably make the bending angle of the pipe greater than the predetermined angle, thereby reducing the precision of the pipe bending process, and eventually causing the pipe fittings to be unable to be installed

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