Non-retraction toolpath generation for irregular compound freeform surfaces with the LKH TSP solver

Lin, Zhiwei; Fu, Jianzhong; Sun, Yuwen; Gao, Qing; Xu, Guangyue; Wang, Zhengtuo

doi:10.1007/s00170-017-0247-8

Cited by 12 publications

(1 citation statement)

References 24 publications

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“…With LKH, for a typical 100-city problem, the optimal solution can be found in less than a second. It is also used to generate a kind of TSP tool path for freeform surfaces in other research [28,29]. One possible zero-weighted link and a corresponding TSP solution for the graph in Figure 4 is shown in Figures 5(a) e preferred crossfeed direction is used to facilitate users to choose the crossfeed direction to optimize the machining time or control the machining texture.…”

Section: Patch Order Determinationmentioning

confidence: 99%

Five-Axis Tool Path Generation of Injection Mold Represented by T-Spline Surface

Shang

Shen

et al. 2020

Advances in Polymer Technology

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Injection molding is widely used in industries to produce polymeric products. At present, compound NURBS surfaces are commonly used to represent freeform surfaces in mold models. This work uses T-spline surface with extraordinary control points instead of NURBS to represent freeform surfaces in mold models. Compared with NURBS, T-splines’ higher-order continuity facilitates the mold quality control especially at the patch boundary. And, its patch layout information can be utilized for tool path planning. We propose an algorithm to determine the patch processing order and generate nonretraction tool path for T-spline surface models. The tool paths are generated patch by patch using isoparametric strategy. Actual machining and injection molding experiments have been conducted. The result shows the feasibility of the proposed method, and the final product is in good quality.

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Section: Patch Order Determinationmentioning

confidence: 99%