Study on the Cutting Temperature and Chips Formation during the Milling of Pure Titanium

2018 ◽  
Vol 880 ◽  
pp. 315-320
Author(s):  
Emil Nicusor Patru ◽  
Dumitru Panduru ◽  
Nicolae Craciunoiu ◽  
Marin Bica
Keyword(s):  
Pure Titanium ◽  
Cutting Temperature ◽  
Milling Process ◽  
Cutting Conditions ◽  
Cutting Process ◽  
Screen Capture

In this paper some experimental determinations on the temperature during the milling process of pure titanium is conducted, using different cutting conditions. The results are presented as graphical dependencies and also as a screen capture of the values obtained using an adequate technique for temperature of the cutting process. Some pictures of the chips shape captured during milling process of the pure titanium bare are presented.

Study on the Cutting Temperature and Chips Formation during Turning of Pure Titanium

2018 ◽  
Vol 880 ◽  
pp. 321-326
Author(s):  
Dumitru Panduru ◽  
Emil Nicusor Patru ◽  
Nicolae Craciunoiu ◽  
Marin Bica
Keyword(s):  
Pure Titanium ◽  
Cutting Temperature ◽  
Cutting Conditions ◽  
Turning Process ◽  
Screen Capture

In this paper some experimental determinations on the temperature during the turning of the pure titanium are done, using different cutting conditions. The results are presented as graphical dependencies and also as a screen capture of the values obtained using an adequate technique for registered the temperature during the turning process. Some pictures of the chips shape was captured and presented in this paper

Machining Characteristics of AlN-hBN Composites in End-Milling and Precision Lapping Processes

2008 ◽  
Vol 368-372 ◽  
pp. 947-950
Author(s):  
Si Young Beck ◽  
Bong Cheol Shin ◽  
Myeong Woo Cho ◽  
Eun Sang Lee ◽  
Dong Sam Park ◽  
...  
Keyword(s):  
Material Properties ◽  
End Milling ◽  
Milling Process ◽  
Cutting Conditions ◽  
Cutting Process ◽  
Depth Of Cut ◽  
Micro Cracks ◽  
Experimental Works ◽  
Machining Characteristics ◽  
End Milling Process

In this study, the machining characteristics of developed AlN-hBN composites were investigated in the end-milling and precision lapping processes. To achieve the objectives, material properties of the developed AlN-hBN composites were evaluated according to the variation of hBN contents. And, required experimental works were performed to investigate the machining characteristics of the composites. First, the machiniability of the composite was evaluated in the end-milling process under various cutting conditions, such as spindle speed, feederate, and depth of cut variations. Also, generated micro cracks caused by the cutting process were investigated via SEM photographs. Next, precision lapping experiments were performed under various conditions, and the results were estimated.

Study on Milling Process Based on Finite Element Analysis

2012 ◽  
Vol 468-471 ◽  
pp. 1322-1325
Author(s):  
Yong Liang Zhang ◽  
Rui Jie Wang ◽  
Hong Bin Liu ◽  
Mao Hua Du ◽  
Xiao Dong Xu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Speed ◽  
Cutting Temperature ◽  
Milling Process ◽  
Cutting Process ◽  
Feed Speed ◽  
Element Analysis ◽  
High Speed Cutting ◽  
Deformation Force

The influence of negative chamfers of PCBN milling cutters on cutting process of high speed cutting is studied based on finite element analysis. The milling speed, axial cutting depth and feed speed are all set fixed, while the negative chamfer angle varies. Cutting tool stress, deformation force, and cutting temperature are obtained for cutting process under different negative chamfering Angle,thus providing basis for the selection of tool parameters in practical production.

An Investigation on Green Machining: Cutting Process Characteristics of Organic Metalworking Fluid

2011 ◽  
Vol 230-232 ◽  
pp. 809-813 ◽  
Author(s):  
T.S. Lee ◽  
H.B. Choong
Keyword(s):  
Surface Roughness ◽  
Feed Rate ◽  
Cutting Temperature ◽  
Milling Process ◽  
Cutting Process ◽  
Depth Of Cut ◽  
Process Characteristics ◽  
Metalworking Fluid ◽  
Soy Bean Oil ◽  
Ph Level

This paper compares the cutting process characteristics of organic and inorganic coolant for milling process. RBD(refined, bleached & deodorized) palm olein, refined canola and soy bean oil were selected as based oil for soluble mixture(organic) while Jetkool SC95 as inorganic metalworking fluid (MWF). Throughout the research, carbide coated cutting tool and JIS SS400 mild steel are used with various feed rate, depth of cut and fixed spindle speed to determine the cutting temperature, forces and also surface roughness. Heat capacity, pH and tool wear assessment are carried out as well with same material. From the research, cutting temperature, cutting force and surface roughness are proportional to the feed rate and depth of cut. The MWFs pH level also drops after cutting process. Each MWFs showing their different strength on different assessments, overall from the results obtained, palm oil has a high potential to be marketed as organic MWF.

scholarly journals ANALYSIS OF THERMAL PHENOMENA IN MILLING PROCESS

2019 ◽  
Vol 34 (3) ◽  
pp. 621-627
Author(s):  
Anđelija Mitrović ◽  
Maja Radović
Keyword(s):  
Finite Element ◽  
Software Package ◽  
Cutting Temperature ◽  
Milling Process ◽  
Cutting Process ◽  
Temperature Fields ◽  
Complex Geometries ◽  
The Finite Element Method ◽  
Mathematical Simulations ◽  
Cutting Zone

Milling is one of the most conventional machining processes used in the industry. The cutting edge of the mill tooth periodically enters and exits from the contact with the workpiece, which leads to periodic heating and cooling during machining. This process is influenced by many output parameters and one of the most important parameters is the temperature because it affects the tool wear and tool life. Also, during the milling process the cross-section of the chip is variable. Cutting tools are expensive and have a duration that is measured in minutes and therefore, predicting temperature and tool wear during the machining process is of the great importance for the understanding and optimization of process parameters. To determine cutting temperature or temperature fields in end milling different methods can be used. During the last decades various experimental methods were developed for measuring cutting temperature. Measuring temperature with infrared thermal imaging camera is most suitable method concerning capturing values of temperature fields. An experimental approach to studying the cutting process is expensive and time-consuming, especially when a wide range of tool geometry, material, and machining parameters are included. Because of these difficulties, alternative approaches such as mathematical simulations have been developed. Numerical methods are most commonly used in those mathematical simulations. In the research field of cutting process, the finite element method is regarded as a very useful tool to study the cutting process of materials. The aim of this paper is the modeling and simulation of milling predictive temperature in the cutting zone by using the finite element method. The right choice of finite element software is very important in determining the scope and quality of the analysis that will be performed. In order to predict the occurrence of thermal processing milling was used software package Third Wave AdvantEdge. AdvantEdge contains a user-friendly interface and offers the possibility of creating new tool and workpiece geometries within the program and also to import complex geometries form other CAD files. 3D model of the workpiece and end mill was created in the software package SolidWorks. AdvantEdge also allows users to import complex geometries and have extensive material library and allows specifying new materials uses adaptive meshing to increase the accuracy of solution. Workpiece material AISI 4340 steel and tool material Carbide-General were selected from the library of 3D materials. For proper cutting conditions we have presented the results of simulation-based on which the influence of feed per tooth on the temperature in the cutting zone is analyzed.

Predicting the High Speed Cutting Process of Titanium Alloy by Finite Element Method

2011 ◽  
Author(s):  
Xiangqin Zhang ◽  
Xueping Zhang ◽  
A. K. Srivastava
Keyword(s):  
Finite Element ◽  
Cutting Forces ◽  
High Speed ◽  
Cutting Temperature ◽  
Chip Morphology ◽  
Cutting Process ◽  
Fe Model ◽  
Dry Cutting ◽  
Friction Coefficients ◽  
Machining Conditions

To predict the cutting forces and cutting temperatures accurately in high speed dry cutting Ti-6Al-4V alloy, a Finite Element (FE) model is established based on ABAQUS. The tool-chip-work friction coefficients are calculated analytically using the measured cutting forces and chip morphology parameter obtained by conducting the orthogonal (2-D) machining tests. It reveals that the friction coefficients between tool-work are 3∼7 times larger than that between tool-chip, and the friction coefficients of tool-chip-work vary with feed rates. The analysis provides a better reference for the tool-work-chip friction coefficients than that given by literature empirically regardless of machining conditions. The FE model is capable of effectively simulating the high speed dry cutting process of Ti-6Al-4V alloy based on the modified Johnson-Cook model and tool-work-chip friction coefficients obtained analytically. The FE model is further validated in terms of predicted forces and the chip morphology. The predicted cutting force, thrust force and resultant force by the FE model agree well with the experimentally measured forces. The errors in terms of the predicted average value of chip pitch and the distance between chip valley and chip peak are smaller. The FE model further predicts the cutting temperature and residual stresses during high speed dry cutting of Ti-6Al-4V alloy. The maximum tool temperatures exist along the round tool edge, and the residual stress profiles along the machined surface are hook-shaped regardless of machining conditions.

Mechanism of Variable Helix Tools in Suppressing Chatter Using Process Damping for Machining Titanium Alloys at Low Cutting Speed

2013 ◽  
Vol 773-774 ◽  
pp. 370-376
Author(s):  
Muhammad Adib Shaharun ◽  
Ahmad Razlan Yusoff ◽  
Mohammad S. Reza
Keyword(s):  
Titanium Alloy ◽  
Cutting Speed ◽  
Milling Process ◽  
Cutting Process ◽  
Chatter Vibration ◽  
Process Damping ◽  
High Cutting Speed ◽  
Titanium Machining ◽  
Different Types ◽  
Variable Helix

Titanium is difficult-to-cut materials due to its poor machinability and thermal conductivity when machining at high cutting speed. To overcome this machining titanium alloy problem, this study in interaction between machining structural system and the cutting process are very important. One of the main problems in the cutting process is chatter vibration. Due to chatter problem, the mechanism to suppress chatter named, process damping is a useful method can be manipulated to improve the limited productivity of titanium machining at low speed machining in milling process. In the present study, experiment are conducted to evaluate and study the process damping mechanism in milling using different types of variable tools geometries. These tools are variable he-lix/uniform pitch, variable pitch/uniform helix and variable helix and pitch and uniform helix/pitch. The result showed that the variable helix and pitch tools is very significantly improve process damping performance in machining titanium alloy compare to traditional of regular tools and other irregular tools.

Modeling of Cutting Process with Cutter Axis Inclination

2011 ◽  
Vol 223 ◽  
pp. 66-74 ◽  
Author(s):  
Takashi Matsumura
Keyword(s):  
Tool Wear ◽  
Surface Finish ◽  
Cutting Temperature ◽  
Cutting Process ◽  
Mechanistic Models ◽  
End Mill ◽  
High Quality ◽  
Ball End Mill ◽  
Milling Operations ◽  
Edge Roughness

Multi-axis controlled machining has been increasing with the demand for high quality in mold manufacturing. The cutter axis inclination should be properly determined in the milling operations. The paper discusses the cutting process of ball end mill with the cutter axis inclination. Two mechanistic models are presented to show the effect of the cutter axis inclination on the tool wear and the surface finish. The actual cutting time during a rotation of the cutter reduces with increasing the cutter axis inclination. Then, the tool is cooled in the non-cutting time. The tool wear is suppressed with reducing the cutting temperature. The surface finish is also improved by increasing cutting velocities with the cutter axis inclination. When the cutter is inclined in the feed direction, the effect of the edge roughness on the surface finish is eliminated. The discussion based on the simulation is verified in the cutting tests for brittle materials.

Monitoring of Cutting Conditions with Dry Cutting on CNC Turning Machine

2010 ◽  
Vol 443 ◽  
pp. 382-387 ◽  
Author(s):  
Somkiat Tangjitsitcharoen ◽  
Suthas Ratanakuakangwan
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Cutting Forces ◽  
Cutting Temperature ◽  
Cutting Conditions ◽  
Cutting Condition ◽  
Nose Radius ◽  
Dry Cutting ◽  
Cnc Turning ◽  
Coated Carbide

This paper presents the additional work of the previous research in order to verify the previously obtained cutting condition by using the different cutting tool geometries. The effects of the cutting conditions with the dry cutting are monitored to obtain the proper cutting condition for the plain carbon steel with the coated carbide tool based on the consideration of the surface roughness and the tool life. The dynamometer is employed and installed on the turret of CNC turning machine to measure the in-process cutting forces. The in-process cutting forces are used to analyze the cutting temperature, the tool wear and the surface roughness. The experimentally obtained results show that the surface roughness and the tool wear can be well explained by the in-process cutting forces. Referring to the criteria, the experimentally obtained proper cutting condition is the same with the previous research except the rake angle and the tool nose radius.

The Evaluation of the up and down Milling Based on its Chip

2014 ◽  
Vol 941-944 ◽  
pp. 1943-1946
Author(s):  
Jozef Zajac ◽  
Veronika Fečová ◽  
Peter Michalik ◽  
Marek Kočiško ◽  
Jan Zajac ◽  
...  
Keyword(s):  
Milling Process ◽  
Cutting Process ◽  
Economical Aspect

The main aim of this contribution was monitoring of chip in the milling process by the evaluation of the volumetric coefficient of chip. The chip was monitoring during the peripheral up and down milling. Nowadays, the milling is the most used technology in engineering. The shape of chip is important for its transport and for economical aspect of this technology. This coefficient represents the shape of chip. The small chip has a lower volumetric coefficient, but the very small chip is not very desired in the cutting process, because they can fill some small spaces and damage the machine. But very long chip can damage tool and machine, too.

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