Prediction of Forces in Micro-Cutting and the Study Based on Simulation

2011 ◽  
Vol 467-469 ◽  
pp. 197-201 ◽  
Author(s):  
H. Xiao ◽  
Wen Ge Wu ◽  
W.T. Mei
Keyword(s):  
Cutting Force ◽  
Strain Gradient ◽  
Cutting Parameters ◽  
Effect Of Temperature ◽  
Gradient Plasticity ◽  
Cutting Depth ◽  
Micro Cutting ◽  
Linear Mode ◽  
Deformation Area ◽  
Temperature Area

In micro-cutting process, a remarkable characteristic of micro-Cutting is that cutting parameters level closing to the crystal grain msize of material. Though, the prediction formula of micro-cutting forces should reference to strain gradient plasticity theory in formula construction , while cutting edge radius had been regard as a important parameters in the process of micro-cutting. With advantedge FEM software for simulation of micro-cutting , the results show that, there was no significant effect of temperature on cutting force; strain gradient reaction will be decreased by feed rate’s reducing in process, cutting depth effected cutting force in linear mode, the max. workpiece temperature area is no longer the second deformation area but the primary deformation zone, while the max. temperature area of the tool would transfer to the tool tip from theoretical location of traditional cutting.

Study of Cutting Forces Models for Micro-Cutting Based on Strain Gradient

2012 ◽  
Vol 499 ◽  
pp. 307-311 ◽  
Author(s):  
Wen Ge Wu ◽  
H. Xiao ◽  
H.F. Wang ◽  
T. Xiao
Keyword(s):  
Flow Stress ◽  
Strain Gradient ◽  
Cutting Forces ◽  
Approximate Expression ◽  
Cutting Parameters ◽  
Machining Parameters ◽  
Gradient Plasticity ◽  
Prediction Formula ◽  
Micro Cutting ◽  
Factors Affecting

In micro-cutting process, it is very significant to study the variations of cutting forces and the factors affecting the forces for determining the machining parameters and for improving the performance of machining systems. The remarkable characteristic of micro-Cutting is that cutting parameters level closing to the crystal grain msize of material. Though, the prediction formula of micro-cutting forces should reference to strain gradient plasticity theory in formula construction, while cutting edge radius had been regard as a important parameters in the process of micro-cutting. The study show that, strain gradient reaction will be decreased by feed rate’s reducing in process, approximate expression of the strain gradient by the derivative of chip deformation rate, and the micro-cutting forces include hear flow stress, tensile flow stress ,and the friction force of rake surface.

Study on mathematical model of cutting force in micromachining

2015 ◽  
Vol 06 (04) ◽  
pp. 1550039
Author(s):  
Zhen Yu ◽  
Quan-Jie Gao ◽  
Ding-Fang Chen
Keyword(s):  
Cutting Force ◽  
Cutting Tool ◽  
Small Deformation ◽  
Surface Friction ◽  
Force Model ◽  
Gradient Plasticity ◽  
Cutting Force Model ◽  
Cutting Depth ◽  
Micro Cutting ◽  
Extrusion Mechanism

With the development of micromachining technology, it is very important to study the mechanism of micromachining, determine the micromachining parameters and ensure the products’ quality during the micromachining process. Combined with the micro-mechanism between tool and workpiece during micromachining process, the sources of the micro-cutting force were analyzed, the micro-cutting physical model was constructed, and the microstress model interacted between the cutting arc edge of the tool and the material of the workpiece was analyzed. Combined with the surface friction and elastic extrusion mechanism between the cutting tool and workpiece, the micro-cutting force model was constructed from two aspects. The micro-cutting depth is deeper than the minimum cutting depth and the micro-cutting depth is shallower than the minimum cutting depth, then the minimum cutting depth value was calculated. Combined with the dislocation properties and microcrystal structure of workpiece’s material, the internal stress of the micromachining force model based on the gradient plasticity theory was calculated, and the force model of the micro-cutting process was studied too. It is significant to control the precision of micromachining process during the micromachining process by constructing the micromachining process force model through studying the small deformation of the material and the mechanism of micromachining.

An Experimental Study of Cutting Force on Large Cutting Depth Turning Titanium Alloy with CBN Tool

2014 ◽  
Vol 800-801 ◽  
pp. 237-240
Author(s):  
Li Fu Xu ◽  
Ze Liang Wang ◽  
Shu Tao Huang ◽  
Bao Lin Dai
Keyword(s):  
Experimental Study ◽  
Titanium Alloy ◽  
Cutting Force ◽  
Feed Rate ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cutting Depth ◽  
Cbn Tool ◽  
Cutting Experiment ◽  
Rough Turning

In this paper, the cutting experiment was used to study the influence of various cutting parameters on cutting force when rough turning titanium alloy (TC4) with the whole CBN tool. The results indicate that among the cutting speed, feed rate and cutting depth, the influence of the cutting depth is the most significant on cutting force; the next is the feed rate and the cutting speed is at least.

Research on the Cutting Fluid Effect on Cutting Force and Surface Roughness in Rotor Milling

2012 ◽  
Vol 723 ◽  
pp. 50-55
Author(s):  
Jian Lu Wang ◽  
Liang Liang Wu ◽  
Jun Zhang ◽  
Wan Hua Zhao ◽  
Yi Fei Jiang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
Design Method ◽  
Uniform Design ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cutting Fluid ◽  
Cutting Depth ◽  
Multivariable Regression ◽  
Uniform Design Method

A series of milling experiments with and without cutting fluid, arranged by uniform design method, were carried out on rotor material. The influence of cutting fluid on cutting force and surface roughness was explored and compared for the two kinds of conditions. The associated model was established between cutting force & surface roughness and cutting parameters according to the linear multivariable regression method. The results show that the cutting force deceases with the increase of the cutting speed or with the decrease of the feed per tooth and the cutting depth. Cutting fluid has little effect on cutting force, and for surface roughness, the influence of cutting fluid is uncertain.

Investigation of Cutting Force in High Feed Milling of Ti6Al4V

2013 ◽  
Vol 770 ◽  
pp. 106-109 ◽  
Author(s):  
Jie Xu ◽  
Bin Rong ◽  
Hong Zhou Zhang ◽  
Dong Sheng Wang ◽  
Liang Li
Keyword(s):  
Titanium Alloys ◽  
Cutting Force ◽  
Aerospace Industry ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cutting Depth ◽  
Increasing Trend ◽  
High Feed ◽  
Series Of Experiments ◽  
Titanium Alloy Ti6al4v

Titanium alloys are widely used in aviation and aerospace industry due to their special mechanical properties. In the process of machining titanium alloys, cutting force is an important physical quantity. In this paper, a series of experiments were carried out to investigate the cutting force in detail during high feed milling of titanium alloy Ti6Al4V with different high feed cutters. Effects of cutting parameters, such as milling speed, feed per tooth, radial cutting depth and axial cutting depth on cutting force were analyzed. The results showed that cutting force presented an obvious increasing trend with the increase of feed per tooth and axial cutting depth. However, the effects of cutting speed and radial cutting depth on cutting force were not obvious.

Cutting Behavior of Self-Lubricating Ceramic Tool in Dry Machining of 40Cr Quenched Steel

2021 ◽  
Vol 871 ◽  
pp. 176-188
Author(s):  
Ben Yuan Wang ◽  
Guang Chun Xiao ◽  
Zhao Qiang Chen ◽  
Ming Dong Yi ◽  
Jing Jie Zhang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Friction Coefficient ◽  
Cutting Force ◽  
Solid Lubricant ◽  
Cutting Temperature ◽  
Cutting Parameters ◽  
Ceramic Composites ◽  
Ceramic Tool ◽  
Cutting Depth ◽  
Ceramic Tools

In this paper, the dry cutting performance of Al2O3/TiC-based ceramic composites with nanoCaF2 was studied. Compared with the Al2O3/TiC ceramic tool, the Al2O3/TiC/CaF2 ceramic tool has lower cutting force, cutting temperature and surface roughness when milling 40Cr hardened steel. Three cutting parameters of cutting speed, feed per tooth, and cutting depth were used to conduct orthogonal experiments to study its changing trend. Through testing of cutting force, cutting temperature and surface roughness, and by comparison with ceramic tools without nanosolid lubricant added, the order of influence of three cutting parameters on cutting force, cutting temperature and surface roughness was obtained. The experimental results showed that the cutting force, cutting temperature and surface roughness of Al2O3/TiC/CaF2 ceramic tools containing nanoCaF2 werebetter than those of Al2O3/TiC ceramic tools. The cutting force, the cutting temperature, and the surface roughness were respectively reduced by 16.5%, 25.8% and 43% compared to when no solid lubricant was added. In addition, after adding solid lubricant, the effect of cutting depth on cutting force was significantly reduced. The average friction coefficient of the tool rake surface was 31.1% lower than that of ceramic tools without solid lubricant. In order to explain this phenomenon, through scanning electron microscopy (SEM) scanning and energy spectroscopy (EDS) elemental analysis, the wear reduction mechanism of solid lubricants was analyzed, that is, during the cutting process, nanosolid lubricants precipitated and formed lubricating film on the rake surface of the tool to reduce the friction coefficient. This was also the main reason for reducing the cutting temperature.

An Experimental Study on Optimization of Cutting Parameters for Disk Milling Titanium Blisk

2014 ◽  
Vol 800-801 ◽  
pp. 97-101
Author(s):  
Yao Nan Cheng ◽  
Yue Zhang ◽  
Dian Ge Zuo ◽  
Xin Min Feng
Keyword(s):  
Cutting Force ◽  
Simulation Analysis ◽  
Removal Rate ◽  
Equivalent Stress ◽  
Cutting Parameters ◽  
Milling Process ◽  
Cutting Depth ◽  
Processing Efficiency ◽  
Optimization Of Cutting Parameters ◽  
The Impact

Blisks are important components of aircraft engines. Its machining plays an important role in a aerospace industry. Blisk processing efficiency has become a hot topic in the field of machining. Disk milling is a new processing method to achieve efficiency. In order to optimize disk milling process parameters of blisk, the use of full-factor experimental for researching TC4 titanium disc milling process. Analyze the impact of different cutting parameters on cutting force, the results show: during milling titanium by Discal Cutter, with the increasing of feed per tooth, the cutting force increases. But cutting forces in three directions has the different influence. Feed per tooth corresponding with radial cutting depth. In order to guarantee the material removal rate, it can be selected smaller feed per tooth and larger radial cutting depth. Through the stress simulation analysis on the blade, it can be carried out that the maximum strain of blade is concentrated at the tip arc. The equivalent stress is mainly concentrated at the main cutting edge and the tip arc. It can provide the basis for future tool design.

scholarly journals Numerical Investigation of the Rock Cutting Performance of a Circular Sawblade

2020 ◽  
Vol 2020 ◽  
pp. 1-18
Author(s):  
Zhiwen Wang ◽  
Qingliang Zeng ◽  
Zhenguo Lu ◽  
Zhihai Liu ◽  
Xu Li
Keyword(s):  
Cutting Force ◽  
Great Influence ◽  
Cutting Parameters ◽  
Simulation Method ◽  
Rock Cutting ◽  
Rock Breaking ◽  
Feed Speed ◽  
Specific Cutting Energy ◽  
Cutting Depth ◽  
Cutting Energy

The rock cutting process with a circular sawblade and the rock breaking mechanism of rock are studied with a numerical simulation method in this paper. The influence of cutting parameters of the circular sawblade on cutting force, rock damage, and specific cutting energy in the process of circular sawblade cutting rock is researched. The cutting force increases with the feed speed and an increase in cutting depth and decline in rotation speed. Cutting rock with double circular sawblades can reduce cutting force. However, the specific cutting energy declines with the increase in cutting depth and the decline in the distance between the double circular sawblades. Cutting parameters have a great influence on the damage range of rock. The research results can be applied to rock processing with a circular sawblade.

Force and Temperature in Dry Cutting of Hardened W18Cr4V with PCBN

2010 ◽  
Vol 431-432 ◽  
pp. 559-563
Author(s):  
Hai Rong Wu ◽  
Guo Qin Huang ◽  
Xi Peng Xu
Keyword(s):  
Experimental Study ◽  
Cutting Force ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cutting Depth ◽  
Dry Cutting ◽  
Feeding Speed ◽  
Strain Gauge Dynamometer ◽  
Three Components

An experimental study was carried out to investigate the effects of cutting parameters on cutting force and temperature in cutting of hardened W18Cr4V with PCBN cutter. Three components of cutting force were recorded by a strain-gauge dynamometer and the cutting temperature was measured by a nature thermocouple of tool-workpiece. The cutting parameters were arranged by orthogonal method. It is shown that the cutting temperature increased with each of the three cutting parameters and the main effecting factor is feeding speed. The three components of cutting force increased greatly with an increase in feeding speed and cutting depth. But the forces decreased a little as cutting speed increased. The main and axial cutting forces depend mainly on cutting depth whereas the radius force is mainly influenced by feeding speed.

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