High speed machining tool path generation for pockets using level sets

Zhuang, Chungang; Xiong, Zhenhua; Ding, Han

doi:10.1080/00207540903232771

Cited by 19 publications

(6 citation statements)

References 31 publications

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“…Therefore, level set is effective in offsetting the structural boundary by extracting the iso-value level set contours. This technique was previously applied to generate the tool paths for the traditional contour machining [44], which can be trivially extended to plan the printing path for AM; see Fig. 4 for an example:…”

Section: Definition Of the Design And Materials Domainsmentioning

confidence: 99%

A Topology Optimization Method for Hybrid Subtractive–Additive Remanufacturing

Liu

Zheng

et al. 2019

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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This paper presents a hybrid subtractive-additive remanufacturing oriented topology optimization method. This method provides a design-for-remanufacturing approach, which offer solutions for product upgrade or repair. To be specific, a used part is first machined to remove material, and then additively deposited of materials on top. In this way, either the function of the part is upgraded or the broken part is repaired. Beneficially, the used part is economically and environment-friendly recycled. This method is developed under the level set framework and innovatively, the layer-wise level set representation of the additive manufacturing part is adopted for self-support and material anisotropy control. Especially for the latter point, the hybrid deposition path, a combination of contour-offset and zig-zag path patterns, is adopted for deposition path planning, which will be concurrently optimized for the best material anisotropy distribution. Therefore, what will be presented in this paper is a novel combination of structural topological design and process planning to derive the optimal hybrid remanufacturing strategy. This is a very novel trial and we have performed experiments to verify its effectiveness.

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Section: Definition Of the Design And Materials Domainsmentioning

confidence: 99%

A Topology Optimization Method for Hybrid Subtractive–Additive Remanufacturing

Liu

Zheng

et al. 2019

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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“…Previously, the level set method was applied to tool path planning for traditional contour machining (Shen et al, 2010;Zhuang et al, 2010). Under the level set framework, the level set values are discretely defined on the mesh nodes, and equation ( 1) is solved to initialize the nodal values as a signed distance field, as demonstrated in Figure 1.…”

Section: Deposition Path Planningmentioning

confidence: 99%

“…To fix this issue, this paper proposed a novel idea of concurrently performing deposition path planning and structural topology optimization under a unified level set framework. The level set method has been applied to the tool path planning method for traditional machining (Shen et al, 2010;Zhuang et al, 2010), which produces contour-offset tool path patterns. Because of problem similarity, this technique can be extended to plan deposition paths for AM.…”

Section: Introductionmentioning

confidence: 99%

Concurrent deposition path planning and structural topology optimization for additive manufacturing

Liu

2017

RPJ

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Purpose Structural performance of additively manufactured parts is deposition path-dependent because of the induced material anisotropy. Hence, this paper aims to contribute a novel idea of concurrently performing the deposition path planning and the structural topology optimization for additively manufactured parts. Design/methodology/approach The concurrent process is performed under a unified level set framework that: the deposition paths are calculated by extracting the iso-value level set contours, and the induced anisotropic material properties are accounted for by the level set topology optimization algorithm. In addition, the fixed-geometry deposition path optimization problem is studied. It is challenging because updating the zero-value level set contour cannot effectively achieve the global orientation control. To fix this problem, a level set-based multi-step method is proposed, and it is proved to be effective. Findings The proposed concurrent design method has been successfully applied to designing additively manufactured parts. The majority of the planned deposition paths well match the principle stress direction, which, to the largest extent, enhances the structural performance. For the fixed geometry problems, fast and smooth convergences have been observed. Originality/value The concurrent deposition path planning and structural topology optimization method is, for the first time, developed and effectively implemented. The fixed-geometry deposition path optimization problem is solved through a novel level set-based multi-step method.

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“…In contrast, traditional machining involves a significant absorption of heat by both the cutting tools and workpieces. Moreover, the two processes exhibit marked differences in chip morphology, with high-speed cutting resulting in segmented chips and conventional cutting producing continuous chip formation [2,3].…”

Section: Introductionmentioning

confidence: 99%

Development of cutting force components in high-speed cutting on turning centre

Vopát,

Straka

2024

J. Phys.: Conf. Ser.

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The article deals with the investigation of high-speed cutting. The influence of cutting speed on the development of individual cutting force components in turning was determined. Cutting tests were carried out on turning centre during the machining of C45 medium carbon steel material. The cutting tool material was cubic boron nitride. Cutting speed was selected with respect to the high-speed cutting (HSC) based on previous studies. In the experiment, cutting force components were recorded. From the results, a decreasing trend in the cutting force values was observed from the cutting speed higher than 1100 m.min-1. It can be caused by changing of metallurgical and mechanical properties in the cutting zone because the overall cutting resistance during HSC was reduced. Chips changed colour to orange during the machining due to temperature changes. No great benefit was observed when high-speed cutting for turning medium carbon steel material. The inefficiency, in this case, is caused by the high price and low tool life of the CBN cutting inserts as well as the cutting force that decreases slowly after the initial increase with a rapidly increasing cutting speed.

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High speed machining tool path generation for pockets using level sets

Cited by 19 publications

References 31 publications

A Topology Optimization Method for Hybrid Subtractive–Additive Remanufacturing

A Topology Optimization Method for Hybrid Subtractive–Additive Remanufacturing

Concurrent deposition path planning and structural topology optimization for additive manufacturing

Development of cutting force components in high-speed cutting on turning centre

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