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Research Papers

An Investigation of Workpiece Temperature in Orthogonal Turn-Milling Compound Machining

[+] Author and Article Information
Fangyu Peng

State Key Laboratory of Digital
Manufacturing Equipment and Technology,
School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
B418 Room, East Building,
1037 Luoyu Road, Wuhan,
Hubei 430074, China
e-mail: zwm8917@263.net

Yizhi Liu

National Numerical Control System
Engineering Research Center,
School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan 30074, China
e-mail: Yizhi_liu0632@126.com

Sen Lin

National Numerical Control System
Engineering Research Center,
School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan 30074, China
e-mail: eversun1@163.com

Rong Yan

National Numerical Control System
Engineering Research Center,
School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan 30074, China
e-mail: siqizaizai@aliyun.com

Sheng Yang

National Numerical Control System
Engineering Research Center,
School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan 30074, China
e-mail: 101sunrise101@163.com

Bin Li

State Key Laboratory of Digital
Manufacturing Equipment and Technology,
School of Mechanical Science and Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China
e-mail: libin999@hust.edu.cn

1Corresponding author.

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received February 21, 2014; final manuscript received July 14, 2014; published online November 26, 2014. Assoc. Editor: Z. J. Pei.

J. Manuf. Sci. Eng 137(1), 011014 (Feb 01, 2015) (10 pages) Paper No: MANU-14-1067; doi: 10.1115/1.4028234 History: Received February 21, 2014; Revised July 14, 2014; Online November 26, 2014

A thermal model estimating workpiece temperature in orthogonal turn-milling compound machining for the case with noneccentricity between rotation axes of workpiece and tool has been established in this paper. Milling tool and machining history were discretized into infinitesimal elements of equal size to deal with complicated cutter geometry and intermittent cutting procedure. The geometries of milling tool and workpiece were analyzed to calculate the instantaneous chip thickness, axial depth of cut, and angles of cutting entry and exit. Heat source during cutting process was considered as instantaneous moving rectangular heat source and heat conducting function in infinite solid thermal conductivity was developed. Experiments measuring cutting force and workpiece temperature were launched to test validity of this model and figure out the importance of effects those factors have on workpiece temperature from variance analysis of orthogonal experiment results. Furthermore, simulations to calculate peak temperature of workpiece were carried out by this model with relevant machining parameters and the results matched conclusions from experiment well.

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References

Figures

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Fig. 1

Orthogonal turn-mill machining

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Fig. 2

Instantaneous rectangular heat source

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Fig. 4

Mechanics and kinematics of oblique cutting

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Fig. 3

Analysis of orthogonal turn-mill machining geometry

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Fig. 5

Experimental setup

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Fig. 6

Three components of cutting force

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Fig. 7

Comparisons of temperature profiles examples (the numbers of thermocouples are 1–5 from left to right)

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Fig. 8

Results of all factors simulation

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