基于離散點(diǎn)云構(gòu)造徑向線的螺旋加工軌跡規(guī)劃方法

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關(guān)鍵詞：離散點(diǎn)云；邊界點(diǎn)提取；最優(yōu)測地線路徑；徑向線；螺旋刀位軌跡 中圖分類號：V462；TH164 DOI：10.3969/j.issn.1004-132X.2025.04.006 開放科學(xué)（資源服務(wù)）標(biāo)識碼（OSID）：

Spiral Machining Trajectory Planning Method Based on Discrete Point Cloud Construction of Radial Lines

WU Jiangsheng CHAI Xingliang*BO Qile LIU Haibo WANG Yongqing School of Mechanical Engineering，Dalian University of Technology，Dalian，Liaoning，116000

Abstract：Aiming at the problems that it was difficult to directly generate efcient and accurate continuous smooth tool path trajectories based on discrete point clouds，a method to directly construct radial lines on point cloud and generate spiral machining trajectories through radial line interpolation was proposed herein. For the construction of radial lines，a boundary recognition method was proposed based on feature descriptors to extract boundary points as two end points of the radial lines. Taking the optimal discrete geodesics between two end points on the point cloud as the radial point set，the curvature minimization problems of discrete geodesics were proposed and solved by Newton iteration method. The B-spline curves were used to fit and resampling according to the residual height based on the radial point sets. The radial line interpolation algorithm was proposed to generate the spiral machining trajectory with equal residual height. Finally，an example was given to demonstrate the spiral machining trajectories directly generated by the point cloud data，which fully verified the effectiveness of the proposed method.

Key words： discrete point cloud; boundary point extraction; optimal geodesic path; radial line; spiral machining trajectory

0 引言

復(fù)雜曲面類零件被廣泛應(yīng)用于航空、航天、船舶和汽車等領(lǐng)域，如火箭貯箱箱底、飛機(jī)壁板、艦船螺旋槳、汽車引擎蓋等。（剩余9434字）