Tool path forming method based on curved surface morphology and curved surface dynamics of machined workpiece

Abstract

The invention provides a tool path forming method based on curved surface morphology and curved surface dynamics of a machined workpiece. The method includes the first step of carrying out force analysis on the working process of the workpiece to figure out the force field distribution of the curved surface of the workpiece when deformation of the workpiece is maximum, the second step of carrying out grid division on the force field distribution of the curved surface of the workpiece and carrying out curve fitting on points with the same applied force in the same force field region to form an equal force field line, the third step of carrying out discrete pointillized processing on all the equal force field lines with a set machining line spacing as the distance between the points, and the fourth step of carrying out curve fitting on discrete points in equal force fields to obtain a tool path based on the curved surface morphology and the curved surface dynamics of the machined workpiece. Through the method, the tool path is determined according to force analysis conditions so as to enable the direction of the tool path to be parallel to the forced direction of the curved surface, and consequently the phenomenon that the curved surface of the workpiece cracks due to tooling is prevented to the maximum extent. Furthermore, the damage of plunge milling tool marks to the textiles of the curved surface of the workpiece is prevented, and the service life of the workpiece is prolonged.

Description

technical field [0001] The invention relates to a method for forming a tool path based on the shape and dynamics of the curved surface of a processed workpiece, and belongs to the technical field of computer aided manufacturing (computer Aided Manufacturing, CAM). Background technique [0002] Complex surface components are widely used in transportation, energy and defense industries, and their manufacturing level represents the core competitiveness of the country's manufacturing industry. With the development of new technology for complex surface digital manufacturing, traditional geometric principles, models and algorithms have shown many disadvantages. In terms of tool path generation, the existing equal parameter method, equidistant section plane method and equal residual height method, etc. These methods are also the basic methods for generating five-axis tool paths in the current five-axis simultaneous machining of complex surfaces. The calculation of the tool path ge...

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Problems solved by technology

[0004] In view of the above deficiencies, the present invention provides a tool path formation method based on the surface morphology and surface dynamics of the processed workpiece, which can solve the problem that the traditional workpiece processing path affects the performance of the workpiece

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