A Tool Trajectory Planning Method for Surrounding Surface Subregion
A technology for processing tools and sub-regions, which is applied in the field of tool trajectory planning for surface sub-region circumcision processing, and can solve problems such as tool marks, machining errors at the boundary, and improper tool connection at the boundary of the processing area.
Active Publication Date: 2020-08-14
DALIAN UNIV OF TECH
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However, this method is very easy to cause improper tool connection at the boundary of the processing area, and then induces machining errors and obvious tool marks at the boundary. Therefore, it is not suitable for the process of variable process parameters in different regions, and has certain limitations.
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[0180] The specific implementation manner of the present invention will be described in detail in conjunction with the technical scheme and the accompanying drawings.
[0181]When machining curved surface partitions with different tools, because the existing methods mostly use the tool path planning mode from the periphery to the center, it is easy to cause the machining error at the inner ring of each sub-area to be out of tolerance, and even obvious tool marks appear, which seriously restricts the processing quality of complex curved surface parts overall improvement. Aiming at this situation, in order to reduce the contact marks at the inner ring of the sub-area tool trajectory, a tool trajectory planning method for surface sub-area circumcision processing based on the equal residual height method was invented. The overall process is shown in the appendix figure 1 shown.
[0182] Taking milling cutters of different sizes milling the saddle surface along different tool traj...
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The invention discloses a trajectory planning method for sub-area ring cutting processing cutters for curved surfaces, belongs to the technical field of high-precision high-efficiency milling processing for complex curved-surface parts, and relates to the trajectory planning method for the sub-area ring cutting processing cutters for the curved surfaces based on a scallop height method. Accordingto the method, the scallop heights of boundary portions of processing sub-areas are defined, according to geometrical characteristics of the processing sub-areas and the intersection point type of thecutters, a clinical cutter contact point curve is constructed, and based on the scallop height method, theoretical / practical cutter contact points are generated in the line spacing direction. Inner ring arc length error calculation models are constructed and sorted, a to-be-corrected area is determined, the theoretical cutter contact point correction distance is calculated through sensitivity analysis, and the theoretical / practical cutter contact points are corrected in the line spacing direction. A total arc length error in the cutting direction is calculated, the cutter contact point arc-length change amount / adjustment amount is calculated through sensitivity analysis, the corrected practical cutter contact points are determined in the cutting direction, and replanning for a cutter trajectory is completed. The method is suitable for ring cutting processing for complex curved surface sub-areas, gear marks can be reduced, and the processing quality is improved.
Description
technical field [0001] The invention belongs to the technical field of high-precision and high-efficiency milling processing of complex curved surface parts, and relates to a tool track planning method for circular cutting processing of curved surface sub-regions based on the equal residual height method. Background technique [0002] With the rapid development of major engineering fields such as aerospace, energy power, automobiles and ships, critical parts with complex curved surfaces with local geometric sudden changes are widely used in various high-end equipment. Due to the complex surface shape of such parts and the local geometrical rapid change characteristics, the traditional overall processing method with unified process parameters is difficult to meet the high-quality and efficient manufacturing requirements of such parts. In order to meet the dual requirements of processing quality and processing efficiency of such parts, part area segmentation and sub-area tool ...
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IPC IPC(8): G05B19/404
CPCG05B19/404G05B2219/45136G05B2219/49001
Inventor 马建伟鲁晓秦逢泽李冠霖曲梓文贾振元刘巍
Owner DALIAN UNIV OF TECH