Five-axis CNC cutting removal simulation method based on entity subdivision

Abstract

The invention discloses a five-axis CNC cutting removal simulation method based on entity subdivision, relates to the technical field of five-axis numerical control cutting processing material removalsimulation, and aims at solving the problems that in the prior art, three-dimensional intersection calculation is needed, view direction adjustment is not supported, and the calculation efficiency islow. According to the five-axis CNC cutting removal simulation method based on the entity subdivision, a workpiece blank is subjected to the entity subdivision along the z axis of a machine tool to be subdivided into quadrangular prisms, and the projection area position of each quadrangular prism on an XY plane is numbered and indexed; then, points on the outer surface of a cutter are projected onto the XY plane, position index numbers of projection areas of the points are searched for and related to all the quadrangular prisms in the projection areas, the maximum and minimum coordinate values in a negative Z axis direction of the points which are located on the outer surface of the cutter and projected in the projection areas are recorded, and the portions, of which the coordinate valuesin a Z axis direction are located between the maximum and minimum coordinate values, of the quadrangular prisms in the projection areas are removed, and therefore simulation of a material removal process during five-axis CNC cutting processing is achieved. According to the five-axis CNC cutting removal simulation method based on the entity subdivision, the entity subdivision mode is adopted to achieve dimensionality reduction, random view direction adjustment is supported, value comparison calculation is adopted to replace the three-dimensional intersection calculation, therefore, the calculation process is simple, and the efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of computer graphics simulation, in particular to the problem of graphics simulation in this field facing the material removal process of five-axis linkage computer numerical control (CNC) cutting process. Background technique [0002] Computer graphics simulation technology is a kind of experimental science based on virtual model. By simulating the system model and conducting scientific tests on the model, the same effect as the real test process can be achieved, which can save manpower and material resources, shorten the product development cycle, and has the advantages of safety, economy, high efficiency, intuitive, non-destructive, and repeatable. The computer graphics simulation technology of CNC cutting process is another new important research branch field of simulation technology, which is of great significance to the research of virtual reality manufacturing technology. [0003] Compared with the t...

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Problems solved by technology

[0005] In order to overcome the shortcomings of the above existing five-axis CNC machining simulation method, which requires complex three-dimensional intersection calculations, does not support arbitrary rotation of the viewing direction, and has low simulation operation efficiency, the present invention provides a simulation based on blank entity subdivision Implementation method, this method only needs to subdivide the blank of the workpiece in the negative direction of the Z axis of the machine tool coordinate system, the tool still maintains the original entity feature model during the simulation process, and simulates and reproduces the material removal during actual cutting to achieve close to Actual realistic simulation effect

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