scholarly journals Fundamental Study on Cutting Mechanism of Different Helix Angles End Mills. Investigation of Cutting Process based on Cutting Tests by 2-Tooth End Mills.

1992 ◽  
Vol 58 (549) ◽  
pp. 1496-1501
Author(s):  
Hiroyasu IWABE
Keyword(s):  
Cutting Process ◽  
Cutting Mechanism ◽  
Fundamental Study ◽  
End Mills

The Nano-Cutting Mechanism Research of Polysilicon Based on Molecular Dynamics

2013 ◽  
Vol 690-693 ◽  
pp. 2559-2562
Author(s):  
Ying Zhu ◽  
Shun He Qi ◽  
Zhi Xiang ◽  
Ling Ling Xie
Keyword(s):  
Molecular Dynamics ◽  
Potential Energy ◽  
Cutting Force ◽  
Cutting Process ◽  
Dynamics Simulation ◽  
Cutting Mechanism ◽  
Nanometric Cutting ◽  
Mechanism Research ◽  
Atom Position ◽  
Dynamics Method

Molecular dynamics model of the polysilicon material under the micro/nanoscale is established by using molecular dynamics method, make variety of the typical defects distribute to the polysilicon model reasonable and relax the simulation model, obtain the system potential energy curves in the relaxation process and the atomic location figure after the relaxation. Conduct molecular dynamics simulation of nanometric cutting process relying on the development of simulation program, get instant atom position image and draw the cutting force curve. Discusses the typical defects impact on the polycrystalline silicon nanometric cutting process, those mainly include cutting force changes in the cutting process, potential energy changes and processed surface quality etc.

2301 A Cutting process model for end mills with consideration of runout effects

2007 ◽  
Vol 2007 (0) ◽  
pp. 43-44
Author(s):  
Hirohisa NARITA ◽  
Keiichi SHIRASE ◽  
Eiji ARAI ◽  
Hideo FUJIMOTO
Keyword(s):  
Process Model ◽  
Cutting Process ◽  
End Mills

scholarly journals Experimental Investigation on Machinability of Aluminum Alloy during Dry Micro Cutting Process Using Helical Micro End Mills with Micro Textures

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4664
Author(s):  
Yao Sun ◽  
Liya Jin ◽  
Yadong Gong ◽  
Yang Qi ◽  
Huan Zhang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Tool Wear ◽  
Rear Surface ◽  
Cutting Process ◽  
Cutting Fluid ◽  
Machined Surface ◽  
Micro Cutting ◽  
Cutting Surface ◽  
Alloy Material ◽  
End Mills

Aluminum alloy material is widely used in the electronics, weapons, aviation and aerospace industries, due to its medium strength, good corrosion resistance, good toughness and excellent oxidation properties. With the trend of product miniaturization, micro cutting has become the mainstream technique for fabricating micro parts and components, so it is very meaningful and vital to work on removing the cutting fluid from the micro cutting process and make it totally sustainable and eco-friendly. In this work, an attempt has been made to fabricate micro textures onto the rear surface of helical micro end mills with diameters of less than 1 mm. Micro textures in the form of grooves were fabricated using a noncontact low speed wire electrical discharge turning technique. Dry micro cutting experiments were carried out on an aluminum alloy material using helical micro end mills with micro textures and the dry micro cutting surface quality and tool wear have been investigated. The influence of dry micro cutting parameters on the surface roughness parameters were also investigated. Experimental results showed that the Sa and Sq can be reduced to be about 1.56 μm and 2.08 μm, respectively. Contrasting results indicate that the implantation of micro textures does not deteriorate the dry micro cutting surface but improves the machined surface consistency of an aluminum alloy workpiece. The tool wear on helical micro end mills with micro textures involved in the dry micro cutting process of Al 6061 mainly include rear frictional wear, oxidation wear and diffusion wear.

Design of bamboo cutting mechanism based on crack propagation principle

BioResources ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. 5890-5900
Author(s):  
Yunyi Guan ◽  
Shouzhong Li ◽  
Xiong Jiang ◽  
Binhao Xu ◽  
Pingyi Liu ◽  
...  
Keyword(s):  
Crack Propagation ◽  
Cutting Process ◽  
Solid Model ◽  
Work Efficiency ◽  
Cutting Mechanism ◽  
Movement Process ◽  
Cutting Operation ◽  
Basic Movement

Bamboo is mainly grown in hilly areas, and the harvesting of bamboo basically relies on labor. Moreover, the bamboo is prone to splitting problems during harvesting. To liberate labor and improve work efficiency, the crack propagation principle of bamboo was studied. Based on this study, a new cutting scheme using spiral feed was proposed. Additionally, a new bamboo cutting mechanism was designed. The new cutting mechanism, when installed on a harvesting vehicle, can automatically complete the cutting operation. The cutting mechanism is different from the traditional ones, and it uses four sets of saw blades for spiral feed cutting around the bamboo, which can reduce the splitting probability during the cutting process. Finally, a solid model of the cutting mechanism was built, and the basic movement process was simulated to verify the feasibility of the bamboo cutting mechanism.

A General Mathematical Model for Gears Cut by CNC Hobbing Machines

1997 ◽  
Vol 119 (1) ◽  
pp. 108-113 ◽  
Author(s):  
Shinn-Liang Chang ◽  
Chung-Biau Tsay ◽  
Shigeyoshi Nagata
Keyword(s):  
Mathematical Model ◽  
Degree Of Freedom ◽  
Cutting Process ◽  
Generation Process ◽  
Cutting Mechanism ◽  
Gear Cutting ◽  
Different Types ◽  
General Mathematical Model ◽  
Crossed Axes ◽  
The Mathematical Model

A hobbing machine’s cutting mechanism is a mechanism with multi-degree of freedom during the cutting process. In this paper, we propose a general gear mathematical model simulating the generation process of a 6-axis CNC hobbing machine based on the cutting mechanism of CNC hobbing machine and worm-type hob cutter. The proposed gear mathematical model can be applied to simulate different types of gear cutting. Some examples are included to verify the mathematical model. Also, a novel type of gear named “Helipoid” which can be used in crossed axes transmission is proposed. The proposed general gear mathematical model can facilitate a more thorough understanding of generation processes and toward the development of novel types of gears.

scholarly journals Real-Manufacturing-Process Finite Element Modeling of Aramid Honeycomb for Cutting Mechanism Revealing

2021 ◽  
Author(s):  
Yuxing Yang ◽  
Yongjie Bao ◽  
Qihao Xu ◽  
Jinlong Wang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Manufacturing Process ◽  
Element Model ◽  
Cutting Process ◽  
Disc Cutter ◽  
Cutting Mechanism ◽  
Initial State ◽  
Final State ◽  
Cutting Experiment

Abstract A finite element model for honeycomb cutting was proposed to reveal its cutting mechanism in the process of cutting with disc cutter, which solves the problem of efficient honeycomb cutting modeling by imitating the real manufacturing process of the aramid honeycomb and solves the problem of honeycomb material assignment by developing a material calculation method. Cutting experiment of ACCH-1-1.83-48 aramid honeycomb specimen concerning on the cutting forces response and cutting damages was conducted. The comparison between the finite element model results and the experimental results validated that the proposed method was effective for investigating the cutting process and mechanism for the aramid honeycomb. Predicted cutting mechanism results show that: (a) cutting process of the aramid honeycomb can be divided into 3 stages with 4 characteristic states: initial state, cut-in state, cut-out state and final state; (b) cell wall bending in the cutting direction relieves the cutting force, and strong plasticity of the aramid fiber makes it hard to break, which lead to uncut fiber and burr damages; (c) using sharp tip cutter as well as bonding both top and bottom of the honeycomb to two stiffer parts individually are beneficial to obtain good cutting quality with less damages.

scholarly journals Research of Fracture Mechanics Applied in the Cutting Process of Plastic Metals

2019 ◽  
Vol 37 (6) ◽  
pp. 1209-1222
Author(s):  
Hongyan Shi ◽  
Xianfeng Zhao ◽  
Ziqin Wang ◽  
Xueting Jiang ◽  
Zichuan Zou ◽  
...  
Keyword(s):  
Fracture Mechanics ◽  
Early Development ◽  
Cutting Process ◽  
Cutting Mechanism ◽  
Current Application ◽  
Shear Theory ◽  
Key Points ◽  
Development Direction ◽  
Fracture Theory ◽  
Physical Phenomena

Shear theory is the mainstream view to explain the cutting process. Because of the complexity of the cutting process, it is still difficult to explain and predict the physical phenomena in the cutting process accurately by shear theory. While some physical phenomena can be well explained by fracture theory. At the same time, with the development of fracture theory, fracture phenomenon in cutting process has attracted scholarsattention again. Therefore, the early development and current application of fracture theory in the study of cutting process are reviewed in detail. The research results and key points of fracture theory in cutting process are summarized. The development direction of fracture theory in the cutting process is briefly discussed. It is considered that the integration of fracture theory and shear theory is an effective way to study cutting mechanism, and the cutting process is divided into six stages in order to integrate fracture and shear theory.

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