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The main technical parameters of the manipulator-precision introduction

2021-06-28

The technical parameters of the injection manipulator reflect the competent work of the manipulator and the highest operational performance. It is all necessary considerations for the selection, design and use of the manipulator.


The primary technical parameters of the manipulator usually include the following seven:


(1) Degree of freedom


(2) Resolution


(3) Precision


(4) Repeat positioning accuracy


(5) Scope of work


(6) Carrying ability


(7) Maximum speed


The primary technical parameters of the manipulator---accuracy introduction:


The accuracy of the manipulator mainly depends on mechanical errors, control algorithm errors and resolution system errors.



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(1) Mechanical error


Mainly caused by transmission errors, joint gaps and the flexibility of the linkage mechanism. Transmission errors are caused by gear tooth errors, pitch errors, etc.; joint gaps are caused by bearing gaps at the joints, harmonic backlash, etc.; the flexibility of the linkage mechanism changes with the change of the manipulator position and load.


The primary technical parameters of the manipulator---accuracy introduction:


The accuracy of the manipulator mainly depends on mechanical errors, control algorithm errors and resolution system errors.


(1) Mechanical error


Mainly caused by transmission errors, joint gaps and the flexibility of the linkage mechanism. Transmission errors are caused by gear tooth errors, pitch errors, etc.; joint gaps are caused by bearing gaps at the joints, harmonic backlash, etc.; the flexibility of the linkage mechanism changes with the change of the manipulator position and load. Injection manipulator


If the overall error of the mechanism can reach the three-reference resolution, the accuracy is equal to the resolution. However, as far as the current level is concerned, it is still difficult for industrial manipulators to achieve this with the exception of manipulators in the nanometer range.


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