This paper presents a new approach for designing the tool paths in the machining of sculptured surfaces for computer nu- merical controlled end milling. In the proposed method, the tool paths are determined so that th...This paper presents a new approach for designing the tool paths in the machining of sculptured surfaces for computer nu- merical controlled end milling. In the proposed method, the tool paths are determined so that the scallop height formed by two adja- cent machining paths is maintained constant across the machined surface. Unlike previous work on iso-scallop height milling, the present work considers the true 3D configuration of the milling procedure and can be used to generate better results, which is shown by examoles.展开更多
In CNC machining,the tool path planning of the cutter plays an important role.In this paper,we generate a space-filling and continuous tool path for free-form surface represented by the triangular mesh with a confined...In CNC machining,the tool path planning of the cutter plays an important role.In this paper,we generate a space-filling and continuous tool path for free-form surface represented by the triangular mesh with a confined scallop height.The tool path is constructed from connected Fermat spirals(CFS)but with fewer inflection points.Comparing with the newly developed CFS method,only about half of the number of inflection points are involved.Moreover,the kinematic constraints are simultaneously taken into account to increase the feedrates in machining.Finally,we use a micro-line trajectory technique to smooth the tool path.Experimental results and physical cutting tests are provided to illustrate and clarify our method.展开更多
基金Partially supported by a grant from NSFC (60821002)
文摘This paper presents a new approach for designing the tool paths in the machining of sculptured surfaces for computer nu- merical controlled end milling. In the proposed method, the tool paths are determined so that the scallop height formed by two adja- cent machining paths is maintained constant across the machined surface. Unlike previous work on iso-scallop height milling, the present work considers the true 3D configuration of the milling procedure and can be used to generate better results, which is shown by examoles.
基金supported by Beijing Natural Science Foundation under Grant Z190004National Key Research and Development Program of China under Grant 2020YFA0713703,NSFC(Nos.11688101,61872332)and Fundamental Research Funds for the Central Universities.
文摘In CNC machining,the tool path planning of the cutter plays an important role.In this paper,we generate a space-filling and continuous tool path for free-form surface represented by the triangular mesh with a confined scallop height.The tool path is constructed from connected Fermat spirals(CFS)but with fewer inflection points.Comparing with the newly developed CFS method,only about half of the number of inflection points are involved.Moreover,the kinematic constraints are simultaneously taken into account to increase the feedrates in machining.Finally,we use a micro-line trajectory technique to smooth the tool path.Experimental results and physical cutting tests are provided to illustrate and clarify our method.
