Calibrating device of articulated arm type coordinate measuring machine

Abstract

The invention discloses a calibrating device for an articulated arm type coordinate measuring machine. A base and a first-axis joint cylinder, the first-axis joint cylinder and a second-axis joint cylinder, and the second-axis joint cylinder and a tail end connecting round rod are selectively connected through 24 uniformly distributed threaded holes, and the adjustable joint angle is strictly controlled to be 15 degrees each time. Through step-by-step angle adjustment from the base to the tail end, adjustment of the attitude of a standard measuring rod in the space is realized, and the adjustment arrangement and the verification range of the standard measuring rod in the space are more regular. Furthermore, supporting columns with trapezoidal notches in the side faces are matched with an auxiliary supporting part to support the standard measuring rod in the space at different heights, and then the standard measuring rod is flexibly fixed on an experiment table through a magnetic attraction seat for auxiliary supporting, so that the stability of the standard measuring rod is efficiently ensured.

Description

technical field [0001] The invention relates to a verification device of an articulated arm type coordinate measuring machine, which belongs to the verification field of an articulated arm type coordinate measuring machine. Background technique [0002] The articulated arm coordinate measuring machine is a new type of multi-degree-of-freedom non-orthogonal coordinate measuring machine, which connects a series of rods in series through six (or seven) rotating joints, and replaces the length measurement reference with an angle measurement reference , the three-dimensional coordinates of the spherical working space range measured by the end probe. It has high flexibility and good portability, and has been gradually applied in aerospace, machinery manufacturing, automobile and ship and other fields. [0003] The articulated arm coordinate measuring machine is a high-precision measuring device. Ensuring the accuracy of its single-point repeatability and distance accuracy is the ...

AI Technical Summary

Problems solved by technology

[0004] At present, the single-point repeatability and distance accuracy verification of the articulated arm coordinate measuring machine is mostly through the taper hole and the standard gauge block fixed on the test bench. Block measurement is used to verify the distance accuracy, and the operation steps are many and time-consuming

In addition, both the tapered hole and the standard gauge block collect data points at their fixed positions for accuracy verification, and the range is limited, lacking the richness of data point verification in the working space of the articulated arm coordinate measuring machine

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