Research on Block Thin Film Hydrostatic Guide Rail of Precision Grinding Machine for Optical Manufacturing

2012 ◽  
Vol 479-481 ◽  
pp. 1510-1514
Author(s):  
Tao Jiang ◽  
Yin Biao Guo
Keyword(s):  
Thin Film ◽  
Large Scale ◽  
Design Calculation ◽  
Guide Rail ◽  
Precision Grinding ◽  
Optical Lens ◽  
Stiffness Design ◽  
Grinding Machine ◽  
Optical Manufacturing

2MK-1760 is a grinding machine used in large scale optical lens manufacturing. To meet the manufacturing requirements, the block thin film hydrostatic guide rail is applied. In this paper, the structure of block thin film hydrostatic guide rail is proposed. In order to get the thickness and the stiffness, design calculation is performed. Experiments are carried out to verify that the feasibility and the validity of this technique.

scholarly journals A High-Speed Precision Bearing Internal Grinding Machine and Grinding Process

2021 ◽  
Author(s):  
Zhou Chang ◽  
Qian Jia ◽  
Lai Hu
Keyword(s):  
High Speed ◽  
Engineering Application ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Guide Rail ◽  
Precision Grinding ◽  
Internal Grinding ◽  
High Speed Grinding ◽  
Bearing Raceway ◽  
Grinding Machine

Abstract In order to meet the requirement of grade P2 bearing grinding, we designed a high-speed internal grinding machine used for bearing raceway and inner circle grinding. The machine adopts T-type layout and 4-axis NC linkage. It is supported by hydrostatic pressure and driven directly by torque motor. Besides, it is equipped with high-speed hydrostatic grinding wheel spindle of ELKA. Our design includes hydrostatic workpiece shaft, hydrostatic turntable and hydrostatic guide rail. The design of this machine can ensure the high-speed grinding process and research has good engineering application value. Finally, the designed precision grinding machine is used to grind the P2 bearing raceway with reasonable processing technology.

Ultra Precision Surface Grinding for Large Scale Non-Axisymmetric Aspheric Lens

2010 ◽  
Vol 97-101 ◽  
pp. 2523-2526 ◽  
Author(s):  
Zhen Zhong Wang ◽  
Yin Biao Guo ◽  
Hao Huang ◽  
Xiang Yang Lei
Keyword(s):  
Large Scale ◽  
Good Accuracy ◽  
Diamond Wheel ◽  
Surface Grinding ◽  
Precision Grinding ◽  
Optical Lens ◽  
Aspheric Lens ◽  
Machining System ◽  
Ultra Precision ◽  
Parallel Grinding

Ultra precision grinding is currently the main technology for large scale advanced optical lens machining. In this paper, the machining system of ultra precision surface grinder is investigated. The experiments of new wedged aspheric lens with the dimension of 430*430mm have been conducted by SD600 diamond wheel, and the parallel grinding, cup truing and on-machine measuring are used for good accuracy. The results show the effective machining system and the problem for next research.

Harmonic Response Analysis of Precision Grinding Machine Bed Made by Artificial Granitic Composite Based on ANSYS

2012 ◽  
Vol 476-478 ◽  
pp. 560-565
Author(s):  
Yi Wang ◽  
Juan Li ◽  
Dong Zhang
Keyword(s):  
Cast Iron ◽  
Response Amplitude ◽  
Response Analysis ◽  
Guide Rail ◽  
Precision Grinding ◽  
Harmonic Response ◽  
Order Of Magnitude ◽  
Harmonic Response Analysis ◽  
Grinding Machine

Made a harmonic response analysis of cast iron bed and precision grinding machine bed made by artificial granitic composite, Compared the amplitude of the guide rail made by the two materials, According to results of the comparison, Optimized the bed of precision grinding machine bed made by artificial granitic composite. The cast iron bed with the optimal results were compared again. The results show that, Under the same conditions, After optimization of the bed rail, the harmonic response amplitude can be reduced about one order of magnitude.

scholarly journals Experimental  Study on the  Reliability and the Precision-maintenance of the Ultra-precision Grinding Machine Based on the Key Subsystem Platforms

2021 ◽  
Author(s):  
Pengli Lei ◽  
Zhenzhong Wang ◽  
Chenchun Shi ◽  
Yunfeng Peng ◽  
Feng Lu ◽  
...  
Keyword(s):  
Large Scale ◽  
High Reliability ◽  
Large Diameter ◽  
Thermal Characteristics ◽  
Thermal Error ◽  
Poor Performance ◽  
Precision Grinding ◽  
Ultra Precision ◽  
Set Up ◽  
Grinding Machine

Abstract The development of high-reliability, high-precision large-scale CNC ultra-precision grinding machines is essential for the efficient processing and manufacturing of large-diameter optical components. In this paper, we studied the reliability and the precision-maintenance of the ultra-precision grinding machine tool experimentally. First, the subsystems with poor performance was identified based on former operating data, which turned out to be the hydrostatic spindle subsystem and the feed subsystem. Then, we set up specific experimental platforms for these two subsystems in order to study the thermal deformation and thermal characteristics. The temperature difference between the inflow and outflow oils of the hydrostatic systems is used as the key parameter to model the accuracy evolution. Our results may provide a method to reveal the relationship between the thermal characteristics and the operating parameters of the subsystems, an therefore compensate the thermal error of the whole ultra-precision grinding machine.

Compensation and Experiment Research of Machining Error for Optical Aspheric Precision Grinding

2013 ◽  
Vol 797 ◽  
pp. 103-107
Author(s):  
Xiao Long Ke ◽  
Yin Biao Guo ◽  
Chun Jin Wang
Keyword(s):  
Error Compensation ◽  
Large Scale ◽  
Surface Metrology ◽  
Precision Grinding ◽  
Machining Error ◽  
Aspheric Lens ◽  
Grinding Method ◽  
Compensation Principle ◽  
Compensation Technique ◽  
Grinding Machine

According to the demand of precision machining for optical aspheric lens, especially large scale optical aspheric lens, this paper presents an error compensation technique for precision grindging. Based on precision surface grinding machine (MGK7160), grating-type parallel grinding method is put forward to realize grinding paths planning for optical aspheric lens. In order to obtain surface metrology and evaluation after grinding, an on-machine measurement system is built. On the basis of compensation principle, machining error is separated to achieve error compensation. Grinding experiments are carried out and show that it can meet the demand of precision grinding, and the accuacy after error compensation attains 6.5μm.

The Structure and Properties of MoSi2 Thin Film in Mos Process

1980 ◽  
Vol 38 ◽  
pp. 326-327
Author(s):  
C.K. Wu ◽  
P. Chang ◽  
N. Godinho
Keyword(s):  
Thin Film ◽  
Integrated Circuits ◽  
High Performance ◽  
Large Scale ◽  
Process Development ◽  
Structure And Properties ◽  
Metal Silicides ◽  
High Oxidation ◽  
Important Approach ◽  
High Oxidation Resistance

Recently, the use of refractory metal silicides as low resistivity, high temperature and high oxidation resistance gate materials in large scale integrated circuits (LSI) has become an important approach in advanced MOS process development (1). This research is a systematic study on the structure and properties of molybdenum silicide thin film and its applicability to high performance LSI fabrication.

A Precision Grinding Machine for Diffusion Studies

1954 ◽  
Vol 25 (9) ◽  
pp. 865-868 ◽  
Author(s):  
Harry Letaw ◽  
Lawrence M. Slifkin ◽  
William M. Portnoy
Keyword(s):  
Precision Grinding ◽  
Diffusion Studies ◽  
Grinding Machine

scholarly journals Performance Improvement of ZnSnO Thin-Film Transistors with Low-Temperature Self-Combustion Reaction

Electronics ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1099
Author(s):  
Ye-Ji Han ◽  
Se Hyeong Lee ◽  
So-Young Bak ◽  
Tae-Hee Han ◽  
Sangwoo Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Photoelectron Spectroscopy ◽  
Large Scale ◽  
Low Cost ◽  
Thermal Analyses ◽  
Thin Film Transistor ◽  
Sol Gel ◽  
Annealing Temperatures ◽  
Zinc Tin Oxide ◽  
Thermal Limitation

Conventional sol-gel solutions have received significant attention in thin-film transistor (TFT) manufacturing because of their advantages such as simple processing, large-scale applicability, and low cost. However, conventional sol-gel processed zinc tin oxide (ZTO) TFTs have a thermal limitation in that they require high annealing temperatures of more than 500 °C, which are incompatible with most flexible plastic substrates. In this study, to overcome the thermal limitation of conventional sol-gel processed ZTO TFTs, we demonstrated a ZTO TFT that was fabricated at low annealing temperatures of 350 °C using self-combustion. The optimized device exhibited satisfactory performance, with μsat of 4.72 cm2/V∙s, Vth of −1.28 V, SS of 0.86 V/decade, and ION/OFF of 1.70 × 106 at a low annealing temperature of 350 °C for one hour. To compare a conventional sol-gel processed ZTO TFT with the optimized device, thermogravimetric and differential thermal analyses (TG-DTA) and X-ray photoelectron spectroscopy (XPS) were implemented.

A compact new-concept ellipsometer for accurate large scale thin film measurements

2014 ◽  
Vol 16 (6) ◽  
pp. 065701 ◽  
Author(s):  
Richard Koops ◽  
Petro Sonin ◽  
Marijn van Veghel ◽  
Omar El Gawhary
Keyword(s):  
Thin Film ◽  
Large Scale
Sign in / Sign up

Export Citation Format

Share Document