scholarly journals Experimental and numerical studies on chip formation mechanism and working performance of the milling tool with single abrasive grain

2020 ◽  
Vol 195 ◽  
pp. 107645 ◽  
Author(s):  
Jiaqi Che ◽  
Hanxiang Wang ◽  
Yanwen Zhang ◽  
Yanxin Liu ◽  
Mingchao Du ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Chip Formation ◽  
Numerical Studies ◽  
Abrasive Grain ◽  
Milling Tool ◽  
Chip Formation Mechanism ◽  
Working Performance ◽  
On Chip

Research on Chip Formation Mechanism of Laser-Assisted Machining of Fused Silica Based on Variable Laser Angle

2020 ◽  
Author(s):  
Pengfei Pan ◽  
Huawei Song ◽  
Junfeng Xiao ◽  
Zuohui Yang ◽  
Guoqi Ren ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Chip Formation ◽  
Incident Angle ◽  
Chip Morphology ◽  
Fused Silica ◽  
Machining Process ◽  
Laser Assisted Machining ◽  
Chip Formation Mechanism ◽  
On Chip ◽  
Cutting Model

Abstract Laser-assisted machining (LAM) is a promising technology for improving the machinability of hard-to-cut materials. In this study, based on the finite element method (FEM), a cutting model of thermally coupled non-uniform temperature field is established. The chip formation mechanism of fused silica during the laser-assisted machining process is explored from the aspects of laser power and laser incident angle. The results show that as the laser incident angle increases, the continuity of the chip increases gradually. An annular tool holder that can adjust the angle between the laser beam and the tool was designed. And the similar chip morphology obtained by variable-angle cutting experiments verified the effectiveness of the cutting model. Moreover, fracture chips and continuous banded chips are found in both simulation and experiment, which implies that the cutting mechanism works under a hybrid mode of brittle fracture and plastic deformation in the LAM process.

Research on Chip Formation Mechanism in Mold Processing of Large Diameter Fresnel Lens

2014 ◽  
Vol 912-914 ◽  
pp. 732-735
Author(s):  
Jia Liang Guan ◽  
Xin Qiang Ma ◽  
Cheng Guo Cao ◽  
Xiao Hui Zhang ◽  
Lei Zhu
Keyword(s):  
Formation Mechanism ◽  
Chip Formation ◽  
Large Diameter ◽  
Fresnel Lens ◽  
Simulation Software ◽  
Machining Process ◽  
Material Strength ◽  
Modal Test ◽  
Chip Formation Mechanism ◽  
On Chip

This paper describes the analysis of the chip formation mechanism in mold machining process of large diameter Fresnel lens based on the ABAQUS finite element simulation software and modal test methods. Combined with the material constitutive relation and material failure criteria etc, a two-dimensional orthogonal cutting model was established and the chip derived from the simulation was compared with the chip from modal test, with a consequent verification of the feasibility of simulation chip model. The simulation contributes to an investigation into the effects of the cutting speed on chip formation process. The results show that: the material strength and plastic brittle have significant impact on chip morphology in the H62 brass mold processing, and material strength will improve with the increase of strain rate, the evolution process of the chip of material plastic reduction can be divided into: ribbon cuttings, serrated chips, cell chips.

Size effect of depth of cut on chip formation mechanism in machining of CFRP

2017 ◽  
Vol 164 ◽  
pp. 316-327 ◽  
Author(s):  
Youliang Su ◽  
Zhenyuan Jia ◽  
Bin Niu ◽  
Guangjian Bi
Keyword(s):  
Size Effect ◽  
Formation Mechanism ◽  
Chip Formation ◽  
Depth Of Cut ◽  
Chip Formation Mechanism ◽  
On Chip
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