An Approach to Efficient Nesting and Cutting Path Optimization of Irregular Shapes

1999 ◽  
Vol 15 (03) ◽  
pp. 129-135
Author(s):  
Chang Doo Jang ◽  
Yun Keun Han
Keyword(s):  
Path Optimization ◽  
Raw Material ◽  
Path Generation ◽  
Generation Algorithm ◽  
Calculation Time ◽  
Initial Allocation ◽  
Irregular Shapes ◽  
Cutting Path

A new nesting and cutting path generation algorithm is proposed and a PC-based GUI system is established for user convenience. The proposed algorithm can reduce the calculation time by updating the boundary of raw material after each part is placed and by selecting the vertices of the boundary as initial allocation points. Grouping the parts by their areas and applying the column nesting can improve the nesting efficiency, e.g., waste ratio. Also, optimal cutting paths are found based on an algorithm by allowing all the convex vertices of the parts to be piercing points compared with existing work that used only fixed piercing points.

Tool Path Optimization of 2D Contour Considering Stock Boundary

2012 ◽  
Vol 251 ◽  
pp. 169-172
Author(s):  
Fu Zhong Wu
Keyword(s):  
Present Method ◽  
Tool Path ◽  
Three Dimensional ◽  
Boundary Curve ◽  
Tool Path Generation ◽  
Path Optimization ◽  
Path Generation ◽  
Offset Curves ◽  
Measuring Machine ◽  
Tool Diameter

Based on analyzing the existing algorithms, a novel tool path generation of 2D contour considering stock boundary is presented. Firstly the boundary points of stock are obtained by three-dimensional measuring machine. And the boundary curve is constructed by method of features identifying. The stock boundary is offset toward outside with tool diameter. An enclosed region is formed between the contour curves and the offset curves of stock boundary. The tool path is generated by form of parallel spiral by offsetting the stock boundary in the enclosed region. Finally the validity of present method is demonstrated by an example.

Use of a virtual milling system to generate power-aware tool paths for 2.5-dimensional pocket machining

2019 ◽  
Vol 233 (13) ◽  
pp. 2419-2435 ◽  
Author(s):  
David Manuel Ochoa González ◽  
Joao Carlos Espindola Ferreira
Keyword(s):  
Power Consumption ◽  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
Machining Time ◽  
Power Requirement ◽  
Pocket Machining ◽  
Direction Parallel ◽  
Generation Algorithm ◽  
Tool Paths

Traditional (direction-parallel and contour-parallel) and non-traditional (trochoidal) tool paths are generated by specialized geometric algorithms based on the pocket shape and various parameters. However, the tool paths generated with those methods do not usually consider the required machining power. In this work, a method for generating power-aware tool paths is presented, which uses the power consumption estimation for the calculation of the tool path. A virtual milling system was developed to integrate with the tool path generation algorithm in order to obtain tool paths with precise power requirement control. The virtual milling system and the tests used to calibrate it are described within this article, as well as the proposed tool path generation algorithm. Results from machining a test pocket are presented, including the real and the estimated power requirements. Those results were compared with a contour-parallel tool path strategy, which has a shorter machining time but has higher in-process power consumption.

Laser cutting path optimization with minimum heat accumulation

2019 ◽  
Vol 105 (5-6) ◽  
pp. 2569-2579 ◽  
Author(s):  
Makbul Hajad ◽  
Viboon Tangwarodomnukun ◽  
Chorkaew Jaturanonda ◽  
Chaiya Dumkum
Keyword(s):  
Laser Cutting ◽  
Path Optimization ◽  
Heat Accumulation ◽  
Cutting Path ◽  
Minimum Heat

scholarly journals Roaming Path Generation Algorithm and Optimization Based On Bezier Curve

2018 ◽  
Vol 51 (17) ◽  
pp. 339-345 ◽  
Author(s):  
Jiayao Li ◽  
Ruizhi Sun ◽  
Chunming Cheng ◽  
Sicong Li
Keyword(s):  
Bézier Curve ◽  
Bezier Curve ◽  
Path Generation ◽  
Generation Algorithm

Lofting-based spiral tool path generation algorithm for milling a pocket with an island

2016 ◽  
Vol 88 (5-8) ◽  
pp. 2169-2178 ◽  
Author(s):  
Zhiping Liu ◽  
Xiongbing Li ◽  
Yongfeng Song ◽  
Bing Yi ◽  
Feng Chen
Keyword(s):  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
Generation Algorithm ◽  
Spiral Tool Path

Geopolymer Obtention Using Calcined Rice Husk Ash

2016 ◽  
Vol 881 ◽  
pp. 373-378
Author(s):  
Carlos Eduardo Pereira ◽  
André Miranda da Silva ◽  
Josiele Souza Batista Santos ◽  
Bianca Viana de Sousa
Keyword(s):  
Rice Husk ◽  
Bending Strength ◽  
Raw Material ◽  
Molar Ratio ◽  
Rice Hull ◽  
X Ray Diffraction ◽  
Rice Hull Ash ◽  
Hydrated Calcium Silicate ◽  
Irregular Shapes ◽  
Xrd Patterns

This study aimed to synthesize geopolymer materials using the ash of burned rice husk. The material was prepared from bauxite slurry, rice hull ash was calcined at 600 °C, metakaolin and sodium hydroxide 12 M solution. The material was cured at 60 °C for 6 h and then at ambient temperature for up to 28 days. We used the same mixture of experimental design to synthesize geopolymer. Through techniques spectroscopy energy dispersive X rivers and X-ray diffraction, it appears that the silica and alumina contents of the identified raw material meets the conditions laid down as minimum for precursors with geopolymer activation potential, as evidenced by the molar ratio Si/Al sample. Geopolymer obtained from the XRD patterns showed characteristic peaks of hydrated calcium silicate. It was found that the particles had irregular shapes and sizes, and the presence of voids affecting the strength of the material. The geopolymeric material obtained showed improvements in the bending strength in a curing time of 28 days.

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