Method for planning smooth and non-interference tool route of 5-axis numerical control machining

A tool path, non-interference technology, applied in the direction of digital control, electrical program control, etc., can solve the problems of limiting tool flexibility, increasing algorithm complexity, and not being able to correctly analyze the manufacturability of workpieces, so as to reduce time and avoid repetition Adjustment, computationally efficient effects

Active Publication Date: 2008-01-23
CHENGDU USEFUL TECH CO LTD
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Problems solved by technology

This patent can use visual information to reduce a large number of interference directions, but abstracts the tool as a straight line when selecting the reference direction, and does not directly consider the diameter of the tool's rotary surface, so interference

Method used

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  • Method for planning smooth and non-interference tool route of 5-axis numerical control machining
  • Method for planning smooth and non-interference tool route of 5-axis numerical control machining
  • Method for planning smooth and non-interference tool route of 5-axis numerical control machining

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Embodiment Construction

[0044] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are not intended to limit the present invention.

[0045] The flow chart of the planning method for the smooth and non-interfering tool path of five-axis CNC machining proposed by the present invention is shown in Figure 1. Firstly, the geometric model of the tool, workpiece and obstacles is established. Interfering objects; use the section method or equal parameter method to calculate the contact point between the tool and the workpiece to obtain the tool contact sequence, and determine the position of the tool point according to the tool contact sequence and tool shape; uniform discretization to uniformly triangulate the Gaussian sphere , take the vertices of the triangular mesh to determine the discrete reference direction of the tool axis; detect the accessibility of all tool contacts in the d...

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Abstract

The utility model relates to a five-axle digital controlled tool path planning method of which the processing is smooth and free of interference as well as the analysis on the producibility of the components. Firstly, the geometrical models for the cutting tools, the work pieces and the obstacles are established. Along the negative direction of the scattered reference direction, griding the obstacle and the disc of the cutting tool turning circle cylindrical surface at the cutter spacing point. Based on the test in depth, the visual information can be obtained to judge the accessibility of the cutting tool along the scattered reference direction. Also, the directional cone for the attainability of the cutting tool can be planned at the cutting tool contact. Based on the continuity constraint of the direction and the restriction of the processing surroundings, the cone for the feasible direction can be calculated and the producibility can be judged. If the producibility is available, the smooth and the non-interference tool path can be planed in the directional cone as per the principle of the minimum change of direction in the tool path so as to output the tool path document. The utility model has a high computational efficiency and a simple programming, so as to be suitable to the wantonly rendered geometrical models such as the polygon grid and the free curved surface. Also, the interference of the clip and the toolbar can be avoided.

Description

technical field [0001] The invention relates to a planning method for a smooth and non-interfering tool path for five-axis numerical control machining, which is suitable for five-axis numerical control machining of complex parts and belongs to the technical field of Computer Aided Manufacturing (CAM). Background technique [0002] CNC machine tools have been widely used in the manufacturing industry. Compared with three-axis CNC machining, five-axis CNC machining can significantly improve processing efficiency and tool accessibility, providing an effective means for processing complex parts. However, the tool path planning of five-axis CNC machining usually requires a lot of manual intervention and repeated verification, which is time-consuming and laborious, and has high requirements for programmers. Especially for parts with complex shapes such as aviation impellers and propellers, the interference phenomenon is serious, and it is impossible to plan a smooth tool path thro...

Claims

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Application Information

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IPC IPC(8): G05B19/18
Inventor 丁汉毕庆贞王宇晗朱向阳朱利民
Owner CHENGDU USEFUL TECH CO LTD
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