A Way to Reduce Machine Cutting Temperature

2014 ◽  
Vol 1061-1062 ◽  
pp. 427-430
Author(s):  
Zi Qin Ma ◽  
Yan An Chen ◽  
Peng Fei Zhao ◽  
Tong Wang ◽  
Chen Peng ◽  
...  
Keyword(s):  
High Speed ◽  
Cooling System ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Coolant Temperature ◽  
High Speed Machining ◽  
High Speed Cutting ◽  
Machining Center ◽  
Cutting Heat ◽  
Development Direction

High-speed cutting technology has become an important development direction of modern NC machining technology, but the existing equipments are often not suitable for high speed machining. An effective method is proposed in view of the cutting heat in cutting process, by introducing chiller to the existing cooling system, the coolant temperature decrease, tool and workpiece temperature can also reduce, so general machining center can achieve cutting speed as quickly as possible.

Experiment of Temperature Field for High Speed Orthogonal Turning

2011 ◽  
Vol 117-119 ◽  
pp. 594-597 ◽  
Author(s):  
Mu Lan Wang ◽  
Yong Feng ◽  
Xiao Xia Li ◽  
Bao Sheng Wang
Keyword(s):  
Temperature Field ◽  
High Speed ◽  
Model Simulation ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Experimental System ◽  
Maximum Temperature ◽  
Fem Model ◽  
High Speed Cutting ◽  
Orthogonal Turning

An experimental system used for temperature measurement is designed by the K-type thermocouple thermometry to achieve a direct measurement of cutting temperature in high speed orthogonal turning. The general regularity of temperature distribution is concluded, and the corresponding influences of cutting speed and cutting depth on the maximum temperature value are discussed in detail. Experimental data and simulating results are comparative analyzed to demonstrate the feasibility and correctness of Finite Element Method (FEM) model simulation and analytical solution. The verified model of temperature field can be applied to develop an effective non-contact soft-sensing method for high speed cutting temperature.

Machinability of Pearlitic Cast Iron With Cubic Boron Nitride (CBN) Cutting Tools

2002 ◽  
Vol 124 (4) ◽  
pp. 820-832 ◽  
Author(s):  
Jiancheng Liu ◽  
Kazuo Yamazaki ◽  
Hiroyuki Ueda ◽  
Norihiko Narutaki ◽  
Yasuo Yamane
Keyword(s):  
Cast Iron ◽  
Boron Nitride ◽  
Tool Wear ◽  
High Speed ◽  
Cubic Boron Nitride ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Machining Conditions ◽  
Machining Center

In order to increase the accurate finishing productivity of pearlitic cast iron, face milling by CBN (Cubic Boron Nitride) cutting tools was studied. The main focus of the study is the machinability investigation of pearlitic cast iron with CBN cutting tools by studying the relationships among machining conditions such as feed rate, cutting speed as well as CBN cutting tool type, tool wear, workpiece surface quality, cutting forces, and cutting temperature. In addition, an emphasis is put on the effect of Al additive in pearlitic cast iron on its machinability and tool wear characteristics. High-speed milling experiments with CBN cutting tools were conducted on a vertical machining center under different machining conditions. The results obtained provide a useful understanding of milling performance by CBN cutting tools.

Calculating of the Temperature Distribution of Primary Shear Zone in Orthogonal High Speed Cutting Based on the Non-Uniform Volume Moving Heat Source

2009 ◽  
Vol 626-627 ◽  
pp. 105-110 ◽  
Author(s):  
Guo He Li ◽  
Min Jie Wang
Keyword(s):  
Temperature Distribution ◽  
Heat Source ◽  
Shear Zone ◽  
High Speed ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Constitutive Relationship ◽  
Moving Heat Source ◽  
High Speed Cutting ◽  
Strain And Strain Rate

A method was presented for calculating the temperature distribution of primary shear zone in orthogonal high speed cutting based on the non-uniform volume moving heat source. The temperature distribution of primary shear zone in orthogonal high speed cutting was calculated by the dynamic plastic constitutive relationship and the distribution of strain and strain rate of primary shear zone. The results show that the temperature distribution of primary shear zone is uneven, from the original plane to the cutoff plane, the cutting temperature increases continuously. In the middle of primary shear zone, the change of cutting temperature is larger, at the position near to original plant and cutoff plane, the change of cutting temperature is smaller. The cutting temperature increases with the increase of cutting speed and cutting depth, but decreases with the increase of rake angle. The comparison with existing method shows that the method presented in this paper is not only available, but also simple, convenient and more accord with the fact of orthogonal high speed cutting.

scholarly journals Precision Hard Turning of Ti6Al4V Using Polycrystalline Diamond Inserts: Surface Quality, Cutting Temperature and Productivity in Conventional and High-Speed Machining

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5677
Author(s):  
Elshaimaa Abdelnasser ◽  
Azza Barakat ◽  
Samar Elsanabary ◽  
Ahmed Nassef ◽  
Ahmed Elkaseer
Keyword(s):  
Surface Roughness ◽  
Feed Rate ◽  
High Speed ◽  
Hard Turning ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Polycrystalline Diamond ◽  
Depth Of Cut ◽  
High Speed Machining ◽  
Conventional Machining

This article presents the results of an experimental investigation into the machinability of Ti6Al4V alloy during hard turning, including both conventional and high-speed machining, using polycrystalline diamond (PCD) inserts. A central composite design of experiment procedure was followed to examine the effects of variable process parameters; feed rate, cutting speed and depth of cut (each at five levels) and their interaction effects on surface roughness and cutting temperature as process responses. The results revealed that cutting temperature increased with increasing cutting speed and decreasing feed rate in both conventional and high-speed machining. It was found that high-speed machining showed an average increase in cutting temperature of 65% compared with conventional machining. Nevertheless, high-speed machining showed better performance in terms of lower surface roughness despite using higher feed rates compared to conventional machining. High-speed machining of Ti6Al4V showed an improvement in surface roughness of 11% compared with conventional machining, with a 207% increase in metal removal rate (MRR) which offered the opportunity to increase productivity. Finally, an inverse relationship was verified between generated cutting temperature and surface roughness. This was attributed mainly to the high cutting temperature generated, softening, and decreasing strength of the material in the vicinity of the cutting zone which in turn enabled smoother machining and reduced surface roughness.

The Assessment of Cutting Temperature Measurements in High-Speed Machining

2004 ◽  
Vol 471-472 ◽  
pp. 162-166 ◽  
Author(s):  
Yi Wan ◽  
Zhi Tao Tang ◽  
Zhan Qiang Liu ◽  
Xing Ai
Keyword(s):  
High Speed ◽  
Cutting Temperature ◽  
Measurement Methods ◽  
High Speed Machining ◽  
Workpiece Surface ◽  
High Speed Cutting ◽  
Infra Red ◽  
Application Fields ◽  
Infrared Pyrometer ◽  
Selection Of

High-speed machining has received important interest because it leads to an increase of productivity and a better workpiece surface quality. However, the tool wear increases dramatically in high-speed machining (HSM) operations due to the high cutting temperature at the tool-workpiece interface and chip-tool interface. Cutting temperature and its gradient play an important role in tool life and machined part accuracy. This paper reviews different methods of the measurements of cutting temperature, which include: (1) thermocouples---tool-work thermocouple, embedded thermocouple, combination thermocouple and compensation thermocouple (2) optical infrared pyrometer, (3) infra-red photography, (4) thermal paints, (5) microstructure or microhardness observation. Each method has its advantages and limitations. The fundamental principles and application fields of each measurement method are presented, which is useful for the selection of the measurement methods for high-speed cutting temperature.

A Model of Cutting Forces for Ball End Mill in High Speed Machining

2010 ◽  
Vol 97-101 ◽  
pp. 3108-3112
Author(s):  
Bing Yan ◽  
Chao Hui Xu ◽  
Wei Wang
Keyword(s):  
High Speed ◽  
End Milling ◽  
Cutting Speed ◽  
High Speed Machining ◽  
End Mill ◽  
Cutting Mechanism ◽  
Ball End Mill ◽  
High Speed Cutting ◽  
The Relationship ◽  
Machining Characteristics

The machining characteristics of hardened still for mould and die greatly affect the accuracy and productivity in industry. The physical modeling and simulation of ball end milling is investigated in this paper. The influence of cutting speed to the cutting mechanism in high speed cutting is taken into account and the momentum force of chip is introduced into the model. By analyzing the shape of the chips the relationship between the cutting speed and shear angle is obtained. The model has been tested on 718HH, with appropriate Seco tools. The validation shows that the adjustment between the model and the real force is adequate, both in shape and magnitude.

scholarly journals Effect of Coolant Temperature on Surface Finish during Turning of Titanium Alloy Ti6Al4V

2018 ◽  
Vol 3 (4) ◽  
pp. 237-244 ◽  
Author(s):  
Temitayo Samson Ogedengbe ◽  
Sulaimon Abdulkareem ◽  
Jacob Olayiwola Aweda
Keyword(s):  
Surface Roughness ◽  
Surface Finish ◽  
Cooling System ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Considerable Effect ◽  
Core Material ◽  
Coolant Temperature ◽  
Depth Of Cut ◽  
Machining Parameters

High temperature generated and stresses induced as a result of turning of Ti6Al4V results in poor surface finish. The aim of this study was to investigate the effect of coolant temperature on the surface roughness of Ti6Al4V which is a core material used as an implant. A cooling system was developed to reduce the temperature of the coolant (soluble oil) from room temperature to 2oC. Ti6Al4V was turned in dry and cooled (at temperatures 5, 7, 9 and 11 oC) conditions. The experiment was designed using central composite design of (Response surface methodology) Design Expert 11.0 to generate an array and optimize the machining parameters. The machining parameters used were cutting speed, feed rate, depth of cut and coolant temperature. Results analyses show that cutting speed and depth of cut had considerable effect on surface roughness of Ti6Al4V. Surface roughness reduced when coolant temperature was reduced. The results of this study shows that turning Ti6Al4V at a very low cutting temperature will ensure a better surface finish.

Study on High Speed Cutting Technology for Green Manufacturing

2011 ◽  
Vol 305 ◽  
pp. 25-30 ◽  
Author(s):  
Xiao Jun Wang ◽  
Wen Hui Yue ◽  
Zi Qiang Han
Keyword(s):  
High Speed ◽  
Manufacturing Industry ◽  
High Efficiency ◽  
Low Cost ◽  
Cutting Temperature ◽  
Green Manufacturing ◽  
Processing Parameters ◽  
High Speed Machining ◽  
High Speed Cutting ◽  
Manufacturing Technologies

As a sustainable model of modern manufacturing industry, green manufacturing is one of the essential solutions of the manufacturing environment pollution problems. Green cutting technology is the base and key of green manufacturing and will be the inevitable trend of cutting technology. High speed machining technology is a kind of the advanced manufacturing technologies which have superiorities as low cost, high efficiency, good processing quality and are suitable for machining thin walled workpieces and difficult-to-cut materials, and the relative problem has attracted scholars' attention from all over the world. From the perspective of green manufacturing, research results of high speed machining hardened steels are reviewed, including cutting force, cutting temperature, selection and optimization of processing parameters and machining quality, and conclude that high speed cutting is one of the key technologies in implementing green manufacturing and cleaner production. Finally, its future works of the research are discussed.

Application of High Speed Machining Technology in Modern Die Manufacture

2014 ◽  
Vol 800-801 ◽  
pp. 139-143 ◽  
Author(s):  
Qiu Yue Cui ◽  
Xue Ren Dong ◽  
Yu Zhen Ma ◽  
Tong Hui Liu
Keyword(s):  
High Speed ◽  
Manufacturing Industry ◽  
Processing Technology ◽  
High Speed Machining ◽  
High Speed Cutting ◽  
Important Development ◽  
Development Direction ◽  
Key Technologies ◽  
Continuous Progress ◽  
The Times

With the continuous progress and development of die industry, the traditional die processing has been unable to meet the current needs of society in the quality and quantity of production. Therefore, die manufacturing industry has improved its processing technology, and then high speed machining technology for dies emerges as the times require. The paper summarizes the elaborations of the characteristics of modern die manufacturing and the advantages of high speed cutting die, and the key technologies of high speed machining technology in die manufacturing are also introduced. Thus the paper illustrates that high speed machining technology is an important development direction of the current die processing.

High-Speed Machining of Ti-6Al-4V With a Micro Textured Cutting Tool Focusing on Coolant Behaviors

2020 ◽  
Author(s):  
Mitsuru Hasegawa ◽  
Tatsuya Sugihara
Keyword(s):  
High Speed ◽  
Metal Cutting ◽  
Production Efficiency ◽  
Cutting Tool ◽  
Failure Process ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Fluid ◽  
High Speed Machining ◽  
Textured Surfaces

Abstract In the cutting of Ti-6Al-4V alloy, the cutting speed is limited as a high cutting temperature leads to severe tool wear and short tool life, resulting in poor production efficiency. However, some recent literature has reported that various beneficial effects can be provided by forming micro-textures on the tool surface in the metal cutting process. In this study, in order to achieve high-performance machining of Ti-6Al-4V, we first investigated the mechanism of the tool failure process for a cemented carbide cutting tool in high-speed turning of Ti-6Al-4V. Based on the results, cutting tools with micro textured surfaces were developed under the consideration of a cutting fluid action. A series of experiments showed that the textured rake face significantly suppresses both crater wear and flank wear. In addition, optimum texture structures and the mechanism of the texture effects in high-speed machining of Ti-6Al-4V alloy were discussed.

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