Interference and grinding characteristics in ultra-precision grinding of thin-walled complex structural component using a ball-end grinding wheel

Parallel grinding is an effective method of aspheric moulds machining which is usually made of industrial ceramic such as silicon carbide (SiC) or tungsten carbide (WC), but if the spherical grinding wheel is not being with precision truing and dressing, the roughness and form accuracy of the ground aspheric surface should get worse, for this reason, in this paper, the influence factors of thoroughness and form accuracy induced by the wheel truing and dressing are studied firstly, and a new 3-axis CNC Ultra-precision grinding system which is based on the PMAC (Programmable Multi-axes Controller) is developed, through simultaneous motion of the controlled X, Z and B axis, the form errors which is induced by the grinding wheel can be improved theoretically, and the aspheric mould machining test shown that the surface roughness of Ra 0.025μm and the form accuracy of P-V 1.15μm are achieved.

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A Study of a New ELID Grinding Fluid by BP Neural Network Model

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.58-60.1792 ◽

2011 ◽

Vol 58-60 ◽

pp. 1792-1796

Author(s):

Wei Li ◽

Yu Jie Fan

Keyword(s):

Neural Network ◽

Bp Neural Network ◽

Grinding Wheel ◽

Precision Grinding ◽

Elid Grinding ◽

Environmental Friendly ◽

Grinding Fluid ◽

Hard And Brittle Materials ◽

Ultra Precision ◽

Bp Neural Network Model

Electronic in-process dressing (ELID) grinding will be a main technology of ultra-precision grinding which has been widely adopted to the ultra-precision and high effectively machining of hard and brittle materials. This study puts forward a new environmental friendly bamboo charcoal bonded (BCB) grinding wheel and develops a new ELID grinding fluid. An oxide layer is mostly determined by the electric performance of grinding fluid in the experiment. This paper founds a model to forecast grinding fluid’s electric performance by BP neural network and MATLAB. This method can be used in developing of ELID grinding machining fluid to improve the ELID grinding effect.

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The Research of ELID Grinding Effect and Surface Quality on Carbonized Cold-Rolled Steel

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.229-231.542 ◽

2012 ◽

Vol 229-231 ◽

pp. 542-546

Author(s):

J.L. Guan ◽

Li Li Zhu ◽

H.W. Lu ◽

Zhi Wei Wang

Keyword(s):

Surface Roughness ◽

Surface Quality ◽

Grinding Wheel ◽

Rolled Steel ◽

Precision Grinding ◽

Cold Rolled Steel ◽

Elid Grinding ◽

Peripheral Velocity ◽

Ultra Precision ◽

Cold Rolled

In this document, the electrolytic in-process dressing ( ELID ) grinding technique is used for ultra-precision processing experimental research on the carbonized cold-rolled steel (HRC60～80).A surface roughness of Ra6～8nm was obtained after ELID precision grinding. The results proved that adopting micro grain size (W1.5～W36) and high hardness cast iron based diamond grinding wheel, increasing the wheel peripheral velocity (18～20m/s) and reducing grinding depth can effectively improve surface quality and bring the surface roughness down. The wheel peripheral velocity, grinding depth as well as grinding fluid are the main factors during ultra-precision grinding.

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High Precision Grinding Wheel Dressing Control Based on PLC

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.199-200.1809 ◽

2011 ◽

Vol 199-200 ◽

pp. 1809-1812

Author(s):

Zhao Ning ◽

Tao Li ◽

Guo Hui

Keyword(s):

Control Method ◽

Switching Time ◽

Grinding Wheel ◽

Precision Grinding ◽

Face Gear ◽

Precise Control ◽

Plc Control ◽

Gear Hobbing ◽

Ultra Precision ◽

Crucial Part

This paper explains PLC control method dealing with grinding wheel dressing, which can be utilized for ultra-precision aviation face gear processing etc. Among the previous processings, shapers and sphericity hob were applied. Whereas gear slotting processing and gear hobbing processing can not achieve project precision. Therefore this new solution was designed: fristly deal with wheel dressing problem, secondly dress face gear with grinding wheel previously dressed. This paper resolved the first problem, within which most crucial part is precise control of switching time. Timers application realized synchronization. There is a PLC managing two driving motors’ synchronization. Two motors working in different but fixed speeds, whilst switching directions at a precisely same time.

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Study on the Machining Principle and Experiment of Grinding

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.395-396.1000 ◽

2013 ◽

Vol 395-396 ◽

pp. 1000-1003

Author(s):

Qiang Xiao

Keyword(s):

New Technology ◽

Surface Damage ◽

Grinding Wheel ◽

Process Technology ◽

Precision Grinding ◽

Brittle To Ductile Transition ◽

Elid Grinding ◽

Ductile Mode ◽

Grinding Mechanism ◽

Ultra Precision

ELID for SiC which enables the improvement of surface quality is put forward. ELID grinding technology is new technology of ultra-precision grinding, and the oxide film is formed on grinding wheel by electrolytic in-process technology, thus the wheel is in-process dressed. SiC material removal mechanism and ELID grinding mechanism is analyzed, the character and condition of brittle to ductile transition of SiC and surface formation mechanism of ductile mode grinding of SiC are studied, the results show that ELID grinding can realize ductile grinding ,this will lower the surface damage and improve the machining efficiency.

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Development of a New Ultra-precision Grinding Wheel Based on the Structure of Natural Whetstones (1st report)

Journal of the Japan Society for Precision Engineering Contributed Papers ◽

10.2493/jspe.71.1531 ◽

2005 ◽

Vol 71 (12) ◽

pp. 1531-1535

Author(s):

Namiko SAITO ◽

Jun-ichi IKENO ◽

Takato TAKEMURA

Keyword(s):

Grinding Wheel ◽

Precision Grinding ◽

Ultra Precision

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Research on ultra-precision grinding technology of thin-walled side of infrared materials

10.1117/12.2603911 ◽

2021 ◽

Author(s):

Yapeng Jia ◽

Peng Wang ◽

Hao Zhang ◽

Hongshun Zhang ◽

Tianyu Zhao ◽

...

Keyword(s):

Precision Grinding ◽

Ultra Precision ◽

Thin Walled ◽

Infrared Materials

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Surface Layer Damage of Quartz Glass Induced by Ultra-Precision Grinding with Different Grit Size

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.872.19 ◽

2017 ◽

Vol 872 ◽

pp. 19-24

Author(s):

Zong Chao Geng ◽

Shang Gao ◽

Ren Ke Kang ◽

Zhi Gang Dong

Keyword(s):

Surface Roughness ◽

Quartz Glass ◽

Subsurface Damage ◽

Grinding Wheel ◽

Precision Grinding ◽

Diamond Grinding Wheel ◽

Diamond Grinding ◽

Roughness Surface ◽

Ultra Precision ◽

Damage Depth

Quartz glass is a typical hard and brittle material. During the manufacturing process of quartz glass components, ultra-precision grinding is widely used due to its high throughput and good dimensional accuracies. However, grinding will unavoidably induce large surface and subsurface damage. In this study, the surface and subsurface damage characteristics of quartz glass substrates ground by diamond wheels with different grit sizes were investigated in terms of surface roughness, surface topography, subsurface microcrack characteristic, and subsurface damage depth. Discussion was also provided to explore corresponding reasons of surface and subsurface damage induced by diamond grinding wheels with different grit sizes of #1500 and #2000. The experiment results showed that the surface roughness, surface damage, and subsurface damage depth induced by #2000 quartz glass was ground by #1500 diamond grinding wheel, and in ductile mode when ground by #2000 diamond grinding wheel.

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