Laser measurement system and method capable of detecting 21 geometric errors

Abstract

The invention relates to a laser measurement system capable of detecting 21 geometric errors. One of a workpiece clamping part and a cutter clamping part is provided with a laser six-freedom-degree simultaneously measuring unit and a laser ray veering unit, and the other is provided with a geometric error sensitive unit. The laser ray veering unit is provided with a plurality of switchable work gestures or a composition composed of a plurality of parts under an installation state. Through rotation or horizontal movement, the laser beams sent by the laser six-freedom-degree simultaneously measuring unit can be splitted in sequence or rotated to a direction that is parallel to the X axis, Y axis, and Z axis; and the laser beams from the geometric error sensitive unit can be splitted or veered to the laser six-freedom-degree simultaneously measuring unit. The provided system has the advantages of simple structure, convenient operation, once installation, and multi-step measurement, and can detect 21 geometric errors of three linear moving guide rails that are perpendicular to each other. (The figure 3 is the abstract figure.)

Description

technical field [0001] The invention relates to a laser measurement system and method capable of detecting 21 geometric errors, which are used for precision processing and measurement equipment such as numerical control machine tools, machining centers or three-coordinate measuring machines, and belong to the field of spatial geometric accuracy detection, and particularly relate to a one-time installation , step-by-step measurement to obtain the laser measurement system and method of 21 geometric errors of three mutually perpendicular linear motion guide rails of precision processing and measurement equipment such as CNC machine tools, machining centers or three-coordinate measuring machines. [0002] In the XYZ space coordinate system of the present invention, the term "21 geometric errors" includes 6 degrees of freedom errors along the X axis, 6 degrees of freedom errors along the Y axis, 6 degrees of freedom errors along the Z axis, X axes and Perpendicularity error between...

AI Technical Summary

Problems solved by technology

[0003] German patent DE10341594A1 discloses a measurement method for directly measuring the geometric errors of CNC machine tools, machining centers or three-coordinate measuring machines. In the direction of the three linear motion axes of the machine, a laser interferometer is used to directly measure the geometric error of each linear motion axis. However, the system has many light-splitting elements, which leads to a complex system structure and difficult system installation and adjustment. In particular, it is impossible to measure Roll Angle Error of Three Linear Motion Axes

[0004] In the market, there is no system with simple structure, convenient operation, one-time installation, step-by-step measurement, and a total of 21 geometric errors of three mutually perpendicular linear motion guide rails can be directly measured

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