Inspection of diamond turning process by the combination of light scattering and angular deflection techniques: a proposed method

1997 ◽  
Vol 36 (9) ◽  
pp. 2536 ◽  
Author(s):  
Hangyu Mi
Keyword(s):  
Light Scattering ◽  
Diamond Turning ◽  
Turning Process ◽  
Angular Deflection

ESCV cutting method during infrared crystal single point diamond turning process

2019 ◽  
Vol 48 (7) ◽  
pp. 742001
Author(s):  
王 朋 Wang Peng ◽  
薛栋柏 Xue Dongbai ◽  
张 昊 Zhang Hao ◽  
杨 坤 Yang Kun ◽  
李伟皓 Li Weihao ◽  
...  
Keyword(s):  
Single Point ◽  
Diamond Turning ◽  
Turning Process ◽  
Cutting Method

Effects of Machining Parameters on Surface Roughness when Ultra-High Precision Diamond Turning RSA443 Optical Aluminum

2019 ◽  
Vol 287 ◽  
pp. 30-34
Author(s):  
Zwelinzima Mkoko ◽  
Khaled Abou-El-Hossein
Keyword(s):  
Surface Roughness ◽  
Silicon Content ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Diamond Turning ◽  
Machining Parameters ◽  
Turning Process ◽  
Optical Components ◽  
Box Behnken Design ◽  
Factors Influencing

In the globally competitive environment, surface roughness and finer tolerances are becoming stringent and certainly most critical for optical components. The aim of this study is to determine the effects of diamond turning process parameters on surface finish when diamond turning RSA 443 alloy having high silicon content. This alloy is a new grade of aluminum that has a potential to be used for production of various optical components. The experiments were conducted based on the Box-Behnken design with three diamond-turning parameters varied at three levels. A mathematical regression model was developed for predicting surface roughness. Further, the analysis of variance was used to analyze the influence of cutting parameters and their interaction in machining. The developed prediction model reveals that cutting speed and feed rate are the most dominant diamond turning factors influencing surface roughness.

Compensation of thermal drift during the single-point diamond turning process based on the LSTM

Optifab 2019 ◽  
2019 ◽  
Author(s):  
Woojong Yeo ◽  
Byeong-Joon Jeong ◽  
Seok-Kyeong Jeong ◽  
Jong-Gyun Kang ◽  
Sangwon Hyun ◽  
...  
Keyword(s):  
Single Point ◽  
Diamond Turning ◽  
Thermal Drift ◽  
Turning Process

Ultrasonic Assisted Diamond Turning of Hardened Steel for Mould Manufacturing

2012 ◽  
Vol 516 ◽  
pp. 437-442 ◽  
Author(s):  
Benjamin Bulla ◽  
Fritz Klocke ◽  
Olaf Dambon ◽  
Martin Hünten
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Diamond Tool ◽  
Spherical Geometry ◽  
Diamond Turning ◽  
Optical Surface ◽  
Turning Process ◽  
Shape Accuracy ◽  
Ultrasonic Assisted ◽  
Innovative Potential

Diamond turning of steel parts is conventionally not possible due to the high tool wear. However this process would enable several different applications with high economical innovative potential. One technology that enables the direct manufacturing of steel components with monocrystalline diamond is the ultrasonic assisted diamond turning process. This technology has been investigated over the years within the Fraunhofer IPT and is now commercialized by its spin-off company son-x. Surface roughness in the range of Ra < 5 nm can be achieved and the diamond tool wear is reduced by a factor of 100 or higher. In order to prove the industrial suitability of the process, two aspherical shapes and one large spherical geometry have been manufactured. The possible form accuracies and surface roughness values will be described in this paper, as well as the tool wear. The goal was to achieve optical surface roughness and a shape accuracy below 300 nm.

Genetic Algorithm-Based Optimization of the Thin-Walled Tube of High Strength Aluminum Alloy in Diamond Turning Process

2011 ◽  
Vol 175 ◽  
pp. 347-351
Author(s):  
Bao Xing Zhang ◽  
Bin Lin ◽  
Zhi Lin Han ◽  
Lei Zhang
Keyword(s):  
Genetic Algorithm ◽  
Aluminum Alloy ◽  
Optimization Technique ◽  
High Strength ◽  
Cutting Parameters ◽  
Diamond Turning ◽  
Turning Process ◽  
High Strength Aluminum Alloy ◽  
Thin Walled Tube ◽  
Thin Walled

Optimization of the cutting parameters is one of the most important contents in diamond turning process of the thin-walled tube of high strength aluminum alloy. Cutting conditions have an influence on reducing the production time and deciding the quality of the final workpiece. This paper proposes an optimization technique based on genetic algorithms (GA) for the determination of the cutting parameters. As the experimental results show, it is very efficient that the proposed genetic algorithm-based procedure for solving this problem.

In Situ Measurement and Compensation Turning Technique of Deep MgF2 Conformal Dome

2014 ◽  
Vol 1027 ◽  
pp. 136-139
Author(s):  
Deng Chao Zhu ◽  
Yi Fan Dai ◽  
Chao Liang Guan ◽  
Gui Lin Wang ◽  
Gui Peng Tie
Keyword(s):  
Measurement System ◽  
Single Point ◽  
Diamond Turning ◽  
Machining Process ◽  
Shape Error ◽  
Turning Process ◽  
Compensation Process ◽  
Surface Test ◽  
Machining Characteristics

The adoption of conformal optics system can evidently improve the synthetical performance of infrared missiles. Hot-pressing poly-crystal magnesium fluoride (MgF2) is an ideal material for conformal optics dome. But many problems about machining and surface test of deep aspheric surface have not been solved at present, and there is not much research about the machining characteristics of MgF2 material. In this paper, in-situ measurement system is designed, so positional errors that introduced by repeating installation can be avoided. Then, machining process of MgF2 material by single point diamond turning is studied, and optimized diamond turning process is proposed by experiments in order to obtain low surface roughness. Furthermore, surface accuracy is tested by on-machine measurement system. Based on the result, error compensation process of conformal dome is carried out. Finally, the shape error of the dome is less than 0.8μm PV.

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