Front and rear blade edge robot abrasive belt grinding and polishing step optimization method

Abstract

The invention discloses a front and rear blade edge robot abrasive belt grinding and polishing step optimization method. The method comprise the steps that firstly, a machining step is calculated based on an equal-chord-height error step method; secondly, the machining step is converted into a corresponding difference value in a curve parameter domain, and accordingly, the position of the next cutter location point is determined; thirdly, a practical chord height error is calculated based on a principle of distance from a point to a line and compared with a standard value, and whether chord height error deviation occurs or not is judged; and fourthly as well as finally, as for a curve segment with the deviation phenomenon, the current cutter location point curvature radius and the machining step are calculated all over again, the position of the next cutter location point is updated, and circulation is performed thus until path planning is completed. According to the front and rear blade edge robot abrasive belt grinding and polishing step optimization method, the situation of the chord height error deviation occurring when the equal-chord-height error step method is applied to cutter location point planning of a blade complex curved surface part is improved mainly, and particularly, in blade front and rear edge curvature large variation areas, the machining profile precision is guaranteed by increasing the cutter location point density in a self-adaption mode; and in blade smooth areas, cutter location points are kept sparse while the machining efficiency is also taken into consideration.

Description

technical field [0001] The invention relates to the technical field of automatic processing based on industrial robots, in particular to a method for optimizing the step length of abrasive belt grinding and polishing of front and rear edges of blades. Background technique [0002] Abrasive belt grinding and polishing performed by industrial robots is an important process to improve the surface quality and precision of complex curved surface parts. The essence of robotic abrasive belt grinding and polishing is that the robot clamps the workpiece to move, so that the tool points on the workpiece contact with the processing points of the abrasive belt wheel in turn. The determination of the processing step directly affects the contour accuracy and processing efficiency of the processing. The equichord error step size method is the current mainstream step size calculation method for complex surface machining, which can better balance machining accuracy and machining efficiency. ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the shortcomings of the existing equichord height error step size method, the present invention provides a method for optimizing the step size of the grinding and polishing step of the front and rear edges of the blade robot

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