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Method for planning five-axis numerical control to process safety shortest cutting tool length

A tool length and tool technology, which is applied in the field of planning the safest shortest tool length in five-axis CNC machining, can solve problems such as not considering the impact of tool length, and achieve high calculation efficiency and simple programming.

Inactive Publication Date: 2008-11-12
SHANGHAI JIAO TONG UNIV
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  • Description
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Problems solved by technology

This patent provides a method for planning tool paths, but does not take into account the effect of tool length

Method used

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  • Method for planning five-axis numerical control to process safety shortest cutting tool length
  • Method for planning five-axis numerical control to process safety shortest cutting tool length
  • Method for planning five-axis numerical control to process safety shortest cutting tool length

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Embodiment Construction

[0045] 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.

[0046] The process flow of the planning method for the safe shortest tool length in five-axis numerical control machining proposed by the present invention is as follows: figure 1 As shown, first establish the geometric model of the tool, the workpiece and the obstacle, the obstacle includes the fixture of the workpiece and the objects that may interfere with the tool around the workpiece; calculate the distance between the tool and the workpiece by using the equal residual height method, section method or equal parameter method Contact points, get the tool contact sequence, determine the position of the tool point according to the tool contact sequence and tool shape; uniformly discretize the Gaussian sphere to plan the discrete reference directi...

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Abstract

The invention relates to a planning method for processing the length of a safe and shortest knife by adopting five-axle numerical control, analyzing component manufacturability and programming a smooth cutter path. Firstly, a maximum value of the cutter length is set within the range allowed in the technology; disc of the cylindrical surface for the knife rotation at the positions of knifepoint and a barrier are gridded, and through the depth testing of video card and the function of blocking and querying, the reachable information and safe shortest length of the knife in a reference direction can be obtained, and the reachable direction cone of the knife is programmed; then according to the restriction to direction continuity and processing environment, the feasible direction cone is calculated and the manufacturability is judged. If the programmed knife is manufacturable, the length of safe and shortest knife of a knifepoint sequence is programmed in the feasible direction cone in a dynamic planning method, and then a smooth knife path is programmed. The method of the invention has high efficiency, simply realized programming, can be applied to 3 plus 2 axle numerical control processing of complex components or knife choosing and path planning of five-axle linkage numerical control processing.

Description

technical field [0001] The invention relates to a planning method for the safe shortest tool length of 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 (Computer Aided Manufacturing, CAM). Background technique [0002] CNC machine tools have been widely used in the manufacturing industry. Compared with traditional three-axis CNC machining, five-axis CNC machining can significantly improve processing efficiency, enhance tool accessibility and shorten tool length, providing an effective solution for the processing of complex parts. means. Due to the change of tool posture, the length of the tool can be shortened under the premise of avoiding interference, but the change of tool posture also greatly increases the difficulty of tool parameter selection and tool path planning. The current tool length planning mainly relies on the trial and error me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/4097
Inventor 毕庆贞丁汉王宇晗朱向阳朱利民
Owner SHANGHAI JIAO TONG UNIV
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