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Automatic calibrating system and method for industrial robot

A technology of industrial robot and calibration system, which is applied in the automatic calibration system and field of industrial robots, which can solve the problems that the laser tracker misses the opportunity of sampling points and the calibration effect is not very high, and achieves the effect of high absolute accuracy

Pending Publication Date: 2020-07-10
SHANGHAI ROBOT IND TECH RES INST CO LTD
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AI Technical Summary

Problems solved by technology

[0003] The common laser tracker plus reflective ball calibration method usually only measures the X, Y, and Z coordinates of the reflective ball at the end of the industrial robot, not the attitude angle R of the end. x , R y , R z measurement, so its calibration effect is not very high
Moreover, the common laser tracker plus reflective ball calibration method takes a few seconds to stabilize after the industrial robot runs a program, so the laser tracker occasionally refuses to collect points because the reflective ball is not stable, and the robot is waiting for a few seconds. The next action will be executed after 2 seconds, so the laser tracker will occasionally miss the opportunity to collect points

Method used

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  • Automatic calibrating system and method for industrial robot

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Embodiment Construction

[0035] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0036] In this embodiment, ABB industrial robot, IO communication box based on Beckhoff module, DELL workstation, laser tracker and T-Mac of Leica Company are taken as examples to illustrate the present invention.

[0037] Such as figure 1 As shown, an industrial robot automatic calibration system provided by the present invention includes an industrial robot 1 to be calibrated, and the industrial robot 1 is installed on a sta...

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Abstract

The invention relates to an automatic calibrating system for an industrial robot. The automatic calibrating system for the industrial robot comprises the to-be-calibrated industrial robot connected with a robot electrical control cabinet, and is characterized by further comprising a T-Mac device from the Leica company at the tail end of the industrial robot, a laser tracker from the Leica companyis arranged right in front of the industrial robot, the T-Mac device is connected with a controller of the laser tracker, the automatic calibrating system for the industrial robot further comprises anI / O communication box, an I / O module of the robot electrical control cabinet is connected with the I / O communication box, the I / O communication box is then connected to an upper computer, and the upper computer is in wireless communication with the laser tracker. The invention further relates to an automatic calibrating method for the industrial robot.

Description

technical field [0001] The present invention relates to a system and method for distinguishing between manual programming teaching calibration and non-posture participation calculation, especially an industrial robot automatic calibration system based on I / O communication box, Leica laser tracker and T-Mac and adopting the automatic calibration system. Automated calibration method for calibration system. Background technique [0002] The absolute positioning accuracy of industrial robots is an important index to measure the performance of industrial robots. Points are collected by laser tracker and reflective ball, and the DH parameters or MDH parameters are corrected by iteratively calculating the extreme value of the function. This method has high calibration accuracy and strong adaptability. Various structures and various DH parameter values Industrial robots can be calibrated, which is suitable for prototype development and verification stages, as well as individual cas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J13/00B25J19/00B25J9/16
CPCB25J13/00B25J19/0095B25J19/0091B25J9/1653
Inventor 陈勉黄慧洁张坤
Owner SHANGHAI ROBOT IND TECH RES INST CO LTD
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