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A study on tangential ultrasonic-assisted mirror

2020-8-13  A study on tangential ultrasonic-assisted mirror grinding of zirconia ceramic curved surfaces. To read the full-text of this research, you can request a copy directly from the authors.

(PDF) Grinding of aspherical SiC mirrors

Diamond grinding can also generate mirror surfaces on brittle materials [27][28][29]. Mirror-surface finish of hard and brittle materials can be achieved by ductile-mode grinding [30, 31] .

Internal mirror grinding with a metal/metal–resin

2001-1-1  In contrast, mirror grinding with fine abrasive wheels was achievable when appropriate parameters were chosen. In this investigation, ELID II grinding with a #325 CIB–CBN wheel was used for rough grinding and the MRB–CBN wheels were utilized for finish grinding only. 4.3.2. Mirror surface grinding with ELID III

A study of mirror-like grinding of fine ceramics with in

Fine ceramics have the properties of high hardness, chemical inertness, high thermal resistance and low electrical conductivity, but, because of high hardness and brittleness, they are very difficult to machine. Therefore, a superabrasive diamond wheel is used for mirror-like grinding of this material. In this study, an in-process electrolytic dressing system for carrying out mirror-like

Mirror Grinding Process Parameter Selection and

The principles of mirror grinding Mirror grinding means high-precision machining with wheel contour micro blades. A large amount of micro blades simultaneously grind the workpiece, forming a smooth surface, which is a major factor in the formation of a mirror. Discover our research outputs and cite our work.

Research on Formation Mechanism of Grinding Wheel

The characteristics, structural characteristics and composition of the grinding wheel oxide film is revealed by the theoretical analysis and simulating test in pre-dressing process of the ELID ultra precision mirror grinding, and the validity of oxide film formation mechanism analysis is verified by ELID experiments. Mirror grinding of hard brittle materials can be realized by on-line real

Research on the error analysis and compensation for

The purpose of this paper is to propose a compensation grinding method for large aspheric mirror surface. Because the tradition grinding is not suitable for large aspheric mirror surface, in this paper, a grate parallel grinding in 3-axis and an on-machine measurement system are applied. Based on that, it presents the errors that mainly affect the form accuracy and technology of compensation

Grinding Research Pays Big Dividends Cutting Tool

2021-1-20  Research spanning the last decade has produced spectacular changes in grinding technology. Many of these advances are a direct result of research collaborations between federal research labs, major universities, end users, and manufacturers.

Is grinding a mirror really that hard??? ATM, Optics

2002-3-16  There is such a thing as a "learning curve" and it's easier to learn on a 6" mirror and then transfer that knowledge to making a larger mirror. One other thing to consider is that a 12" mirror is at the size where you might consider making a grinding and polishing machine rather than pushing the glass by hand. Good luck, Russ Schnitzer

Telescope Mirrors Orion Optics

2019-1-16  Telescope MIrror Sets to purchase online. 4 Grades available: Standard, Professional, Research and Ultra. World class optics.

Study on mirror surface grinding of die steel by using

Read "Study on mirror surface grinding of die steel by using ultrasonically assisted diamond tools, International Journal of Abrasive Technology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Mirror Grinding Process Parameter Selection and

Mirror grinding mainly depends on the precision of the machine tool, cutting and grinding amount and wheel selection and dressing. This paper mainly studies the MG1432 high-precision universal cylindrical grinder, exploring the impact on the workpiece roughness through selection and design of various process parameters in grinding, such as changing work table speed in dressing the grinding

Mirror Surface Grinding of Silicon Wafers with

1990-1-1  The technique uti I lses Electrolytic In-process Dressing (Ek,.l.),named In short "El id-grinding method". After several years of research,this method can real ise efficient mirror surface grinding by micro-grain CIFB wheei(Ref.i-4). The roughness of a ground surface by this method is around 60nr when using X4DDD CIFB-D wheel.

Mirror grinding Hacker News

The center of the mirror is the most likely to be contacted by any motion, so it is abraded more frequently and becomes the deepest point, while the edges are worn less. The distribution between "less" and "more" is spherical. I can at least understand the process of grinding or lapping a surface flat. Here are a couple examples:

KAKEN — Research Projects Skill-free Mirror

In order to realize the skill-free mirror grinding process, five research themes are examined in this study : 1) Generalization of on-machine measurement system of working surface profile of grinding wheel, 2) Establishment of the quantification method of the grain cutting-edge density, 3) Grasp of the change of the grain cutting-edge distributions with dressing, 4) Establishment of the

Research on the error analysis and compensation for

The purpose of this paper is to propose a compensation grinding method for large aspheric mirror surface. Because the tradition grinding is not suitable for large aspheric mirror surface, in this paper, a grate parallel grinding in 3-axis and an on-machine measurement system are applied. Based on that, it presents the errors that mainly affect the form accuracy and technology of compensation

Grinding Research Pays Big Dividends Cutting Tool

2021-1-20  Research spanning the last decade has produced spectacular changes in grinding technology. Many of these advances are a direct result of research collaborations between federal research labs, major universities, end users, and manufacturers.

mirror-maker Waite Research Telescope Mirrors

A New 20" f/3.5" Fast Mirror on Quartz, Part 1, Measurements (added 05/03/10) Ronchi and Foucault Tests on the 20" f/4.5 Quartz Telescope Mirror (added 04/29/10) Figuring a 20" Mirror, Part 1: Reducing a High Zone. Figuring a 20" Mirror, Part 2: Smoothing and Blending Techniques. Making a Ceramic Tile and Dental Plaster Grinding Tool

Waite Research :: Home

With about 50 videos on mirror making and telescope building, Gordon's YouTube channel has accumulated over 2,400,000 views! Read more. Buy a New 20" Waite Research Mirror. If you are thinking about moving up to a large aperture telescope mirror, we have a new Waite Research premium 20" mirror just for you. Email [email protected] today.

High-efficiency mirror grinding of AlN by ultra

The vitrified bond wheel, however, enabled high efficiency grinding but resulted in traces of detached AlN grains forming at the machined surface. Highly efficient mirror grinding of AlN could be achieved by using a vitrified bond wheel for semi-finishing and a resinoid bond wheel for finishing.

Mirror Grinding Process Parameter Selection and

Mirror grinding mainly depends on the precision of the machine tool, cutting and grinding amount and wheel selection and dressing. This paper mainly studies the MG1432 high-precision universal cylindrical grinder, exploring the impact on the workpiece roughness through selection and design of various process parameters in grinding, such as changing work table speed in dressing the grinding

KAKEN — Research Projects Skill-free Mirror

In order to realize the skill-free mirror grinding process, five research themes are examined in this study : 1) Generalization of on-machine measurement system of working surface profile of grinding wheel, 2) Establishment of the quantification method of the grain cutting-edge density, 3) Grasp of the change of the grain cutting-edge distributions with dressing, 4) Establishment of the

A high quality surface finish grinding process to

2020-3-16  A precision grinding with electrolytic dressing process was applied to finish mirrors; figure 2 illustrates the experimental grinding set-up, which was developed in our previous research. A rotary surface grinder, with air hydrostatic bearings for the wheel and

Grinding Research Pays Big Dividends Cutting Tool

2021-1-20  Research spanning the last decade has produced spectacular changes in grinding technology. Many of these advances are a direct result of research collaborations between federal research labs, major universities, end users, and manufacturers.

Mirror grinding safety ATM, Optics and DIY Forum

2012-2-14  Mirror grinding safety posted in ATM, Optics and DIY Forum: When grinding mirrors ATMs use grit sizes as small as 9, 5, 3 or sometimes even 1 micron. I am not yet at such small sizes and do not yet have to mix grit and water in a bottle to pour drops of it onto the mirror. I wear a dust mask to be sure not to breathe in any grinding dust as I have read in a book that someone had to see a

Is grinding a mirror really that hard??? ATM, Optics

2002-3-16  There is such a thing as a "learning curve" and it's easier to learn on a 6" mirror and then transfer that knowledge to making a larger mirror. One other thing to consider is that a 12" mirror is at the size where you might consider making a grinding and polishing machine rather than pushing the glass by hand. Good luck, Russ Schnitzer

Leonardo Da Vinci's mirror making machines

Hockneyís argument furthers through Jan van Eyckís Arnolfini Wedding (1434).Ý In this piece, one can clearly see a convex mirror in the center background.Ý Additionally, the details in the mirror appear so precise that they would almost require optical instrumentation assistance.Ý Of crucial importance, however, is the convex mirror.Ý If convex mirrors could be made and silvered, then it

mirror-maker Waite Research Telescope Mirrors

A New 20" f/3.5" Fast Mirror on Quartz, Part 1, Measurements (added 05/03/10) Ronchi and Foucault Tests on the 20" f/4.5 Quartz Telescope Mirror (added 04/29/10) Figuring a 20" Mirror, Part 1: Reducing a High Zone. Figuring a 20" Mirror, Part 2: Smoothing and Blending Techniques. Making a Ceramic Tile and Dental Plaster Grinding Tool

Waite Research Mirrors For Telescopes Grinding

There's a lot of glass to remove on this deep mirror (12.5" F/1.7 cassegrain). I start with number 80 abrasive on my fixed post grinding machine. This is a coarse high-speed process designed to grind out a lot of glass really quickly. Later steps will refine the shape with finer abrasives and slower techniques.