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principle of a mirror grinding

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  • Joy of Mirror Making: Rough Grinding

    31 rows· The center will deepen during the first stage of fine grinding as contact is achieved across the mirror face and fine grinding tool. On larger mirrors, the ring tool may leave the zones part way to the edge a little underground. For these mirrors, as you near the

  • MIRROR DIAMETER2.533.540.1000.0830.07260.1500.1250.10780.2010.1670.143100.2510.2090.179See all 31 rows on bbastrodesigns
  • Astro-Tel Mirror grinding machine

    MIRROR GRINDING MACHINE. I made my first mirror grinding and polishing machine over thirty years ago. It used the working principle of the machine illustrated at "A" Fig.3, Page 163, "Amateur Telescope Making" Book 1. A bowl which rotated was fitted to the spindle.

  • R&D|IMAX Co.,Ltd.

    Desktop 4-axis mirror surface grinding/cutting machine. TRIDER-X ™ This is a desktop mirror surface grinding/cutting machine with feed resolution of 0.2μm and the maximum feed speed of 3m/min, mounted with a high speed rotary table. Spherical and aspheric lenses and optical elements can be produced at high surface quality of nano-meter level.

  • Fixed post mirror grinder advice DIY Astronomer

    Nov 01, 2011· Hi AllWeve been having some idle discussions about grinding mirrors here. In particular, weve been discussing building a fixed post mirror grinding turntable for cutting mirrors up to about a 24inch diameter to spherical. Its only a pipe dream at the

  • Hi All We've been having some idle discussions about grinding mirrors here. In particular, we've been discussing building a fixed post mirror grind.No personal experience of this, but I'll follow the thread with interest if someone chirps up. I'd come to same conclusions as you, looking at exam.On the RPM I think Gordon Waite is king of this stuff and his rough grinder seems to go at about 40, while his polishing seems slower. Should be in.That rotational speed seems a bit quick to me Steve. By "cutting to spherical" Do you mean you intend to hog the mirror blank with sub diameter too.Belts will give a smoother drive and "cut" than gears but might not be particularly important at this early stage. Fine grinding a certainly polish.Barkis Yes, we plan to hog while the mirror is face up with a smaller tool probably 2/3 size. I've been doing some simulations (don't ask to see.Gordon Waite certainly seems to get good results all the way through polishing on his fixed post machine. How much of that is his expert experience.I'm sure you'll do fine with the grinding Steve, I was just a little taken aback by the rotation speed, but as long as the mirror has three robust.Well I got set up, Used my new illuminated reticule eyepiece to mess with drift alignment.That's not as easy as I thought it was! I got questions.Basically there are two types of grinding/polishing machine. The ‘traditional’ type which involves the mirror rotating at a relatively slow speed,.The 8.75" f/6.7 Mirror Grind DIYFeb 04, 2017Grinding own mirror gives you aAug 27, 2012See more results
  • Foucault knife-edge test Wikipedia

    The mirror to be tested is placed vertically in a stand. The Foucault tester is set up at the distance of the mirror's radius of curvature (radius R is twice the focal length.) with the pinhole to one side of the centre of curvature (a short vertical slit parallel to the knife edge can be used instead of the pinhole).

  • Mirror Principle and the Land Act Law Teacher

    The Mirror Principle and The Land Act of 2002Question 2BibliographyA sound system of land registration is underpinned by three principles: the insurance principle; the curtain principle, and; the mirror principle. The insurance principle refers to the guarantee secured by the State that any loss incurred by a registered land resulting from reliance on the conclusiveness of the land Registry by a land purchaser will be compensated through a statutory indemnity system. The curtain principle, on the other hand, is the concept that land registration may allow ce.
  • Mirror Surface Grinding of Silicon Wafers with

    Mirror Surface Grinding of Silicon Wafers with Electrolytic In-Process Dressing H. Ohmori, T. Nakagawa (1); Institute of Industrial Science, University of Tokyo Received on January 24,1990 SUMllARY:The authors have studied finish grinding techniques.and succeeded in developing a new grinding technique that realises mirror quality surfaces.

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  • How to grind a mirror for a telescope YouTube

    Aug 09, 2011· How to grind a mirror blank into the well-figured basis for a Dobsonian telescope. How to grind the glass, how to carry out a focus test, how to polish with a pitch lap and how to find the focal

  • Author: BBC Sky at Night Magazine
  • Types of mirror grinding machines ATM, Optics and DIY

    Nov 16, 2018· Types of mirror grinding machines posted in ATM, Optics and DIY Forum: Hi to all, I am planning to make a mirror grinding and polishing machine but i have limited knowledge about these machines. Because of this i have some questions to someone who has some experience with those machines; Some machines have fixed supportes and some of them have a prestaltic moving arm,

  • Elgin/Waineo vs Zeiss machine?Dec 08, 2017Making a Mirror grinding & Polishing machineMar 16, 2015Making my own fixed post mirror grinding/polishing machineOct 15, 2012Mirror Grinding MachineSep 29, 2010See more results
  • Document sans nom Astrosurf

    During that period until the end of the 19th century, the refractor had been dominant since Galileo had made it famous. Leonardo da Vinci's idea of using a mirror to build an astronomical instrument remained ignored until Jacques Grégory (1663) first, later followed by Isaac Newton, revived it with the reflecting telescopes that still bear their names, even today.

  • So you really want to build a Telescope Mirror. Astronomy

    So you really want to build a Telescope Mirror. Remember that the principle of grinding states that whichever piece of the work is on the top has it's curvature go towards the concave direction. This works best when the mirror and tool are the same diameter. Small tools will tend to dig in wherever they abrade most.

  • Mirror grinding scope making

    You might purchase a mirror grinding kit, and have everything you need included. If such a kit is unavailable, you need to do some scrounging. You can order a 19 mm thick disc at your local glass shop. Such glass is usually used for tabletops and window displays.

  • How mirror is made material, manufacture, making

    The initial step in mirror manufacture involves cutting and shaping the glass blanks. Cutting is usually done with a saw with diamond dust embedded in the tips. Next, the blanks are put in optical grinding machines, which use abrasive liquid plus a grinding plate to produce a very even, smooth finish on the blanks. The reflective material

  • Pantograph Wikipedia

    Using the same principle, different kinds of pantographs are used for other forms of duplication in areas such as sculpture, minting, engraving, and milling. Because of the shape of the original device, a pantograph also refers to a kind of structure that can compress or extend like an accordion, forming a characteristic rhomboidal pattern.

  • The Aikido FAQ: Polishing the mirror and grinding the stone

    Nov 04, 2011· In turn, you assist me, and when we are finished we are smoother, happier and better for the effort. We continue to practice polishing the mirror and grinding the stone until the mirror of our spirit is a perfect reflection of true self and the surface of the stone is as smooth as the mirror.

  • grinding machine and principle Mine Equipments

    Grinding machine Wikipedia, the free encyclopedia A grinding machine, often shortened to grinder, is a machine tool used for grinding, which is a type of machining using an abrasive wheel as the cutting tool .

  • TYPES OF GRINDING MACHINES Cad cam Engineering

    The versatility and wide application of the grinding processes have led to the development of many types of grinding machines. Your shop will probably have two, three, or more of the common types. As a machinist, you should be familiar with the many types of these machine tools and the processes they perform.

  • Working principle of a grinding machine

    Centreless (Centerless) Grinding Principle where the work piece is held in the grinding machine, while grinding between centers, Text-Book of Advanced Machine Work by Robert Evenfall Astro-Tel Mirror grinding machine MIRROR GRINDING MACHINE. I made my first mirror grinding and polishing machine over thirty years ago.

  • Hard Turning as an Alternative to Grinding : Production

    Jan 22, 2010· As with any new application, there is a learning curve for hard turning, but the fundamental principles follow those of the same turning operations that are commonly performed in shops today. This gives it an inherent advantage over grinding, which requires specific knowledge and experience that not all machinists possess.

  • Metallography Part II Microscopic Techniques YouTube

    Oct 14, 2014· Metallography Part II Microscopic Techniques Sectioning of a sample Wet grinding in several stages Polishing in several stages Etching Observation with a metallographic microscope

  • Author: MaterialsScience2000
  • Electrical Discharge Machining (EDM) and Grinding (EDG

    Mirror finishes of Ra 0.05 µm are possible, and under roughing conditions Ra may be as high as 15 µm. See Also: Grinding,Electrochemical machining and Ultrasonic machining . This article is a part of Manupedia,a collection of information about some of the processes used to convert materials into useful objects.

  • Chromium Industries, Inc. v. Mirror Polishing & Plating Co

    Chromium Industries, Inc. v. Mirror Polishing & Plating Co., Inc., 448 F. Supp. 544 (N.D. Ill. 1978) case opinion from the U.S. District Court for the Northern

  • ELID Grinding and Polishing ScienceDirect

    The basic system, principles, and characteristics of ELID abrasion mechanisms are introduced first. The success and wide application of ELID principles to ceramic grinding is explained. Fourteen applications of the ELID principle to modern abrasive processes are documented to illustrate the scope of application.

  • mirror grinding machines Foxing Heavy Machinery

    MIRROR GRINDING MACHINE I made my first mirror grinding and polishing machine over thirty years ago It used the working principle of the machine illustrated at A Fig3 Page 163 Amateur Telescope Making Book 1 A bowl which rotated was fitted to the spindle I also built another machine . More Details Mirror Grinding Machine Cloudy Nights

  • Electrical Discharge Machining (EDM) and Grinding (EDG

    Mirror finishes of Ra 0.05 µm are possible, and under roughing conditions Ra may be as high as 15 µm. See Also: Grinding,Electrochemical machining and Ultrasonic machining . This article is a part of Manupedia,a collection of information about some of the processes used to

  • Chromium Industries, Inc. v. Mirror Polishing & Plating Co

    Chromium Industries, Inc. v. Mirror Polishing & Plating Co., Inc., 448 F. Supp. 544 (N.D. Ill. 1978) case opinion from the U.S. District Court for the Northern

  • ELID Grinding and Polishing ScienceDirect

    The basic system, principles, and characteristics of ELID abrasion mechanisms are introduced first. The success and wide application of ELID principles to ceramic grinding is explained. Fourteen applications of the ELID principle to modern abrasive processes are

  • mirror grinding machines Foxing Heavy Machinery

    MIRROR GRINDING MACHINE I made my first mirror grinding and polishing machine over thirty years ago It used the working principle of the machine illustrated at A Fig3 Page 163 Amateur Telescope Making Book 1 A bowl which rotated was fitted to the spindle I also built another machine . More Details Mirror Grinding Machine Cloudy Nights

  • Difference Between Mirror and Lens Compare the

    Apr 08, 2012· What is the difference between Mirror and Lens? • Mirrors are devices which are based on the principle of reflection whereas lenses are devices which are based on the theory of refraction. • Material other than glass or clear plastic is required to manufacture mirrors, whereas lenses only require glass or clear plastic.

  • How to Make a Telescope willbell

    by Jean Texereau, 9.38" by 6.00", 440 pages, hardbound, $29.95.. The first edition of How to Make a Telescope was universally acclaimed as the best book ever written for making a Newtonian telescope. This 2nd Edition is almost three times larger and adds to the original text new chapters on making a Cassegrainian telescope, optical windows, and equatorial mounts.

  • Working Principle Of Grinding Using Electrolytic In

    Working Principle Of Grinding Using Electrolytic In Process Dressing This paper describes the possibilities of electrolytic in-process dressing as a practical ultraprecision mirror surface grinding technique for silicon wafers through investigating ground surface topography, subsurface damage, and removal mechanism (Dobrescu et al., 2009).

  • Defect Detection for Ultra-Flat Wafers HOLOGENIX

    The Magic Mirror or Makyoh (meaning 'magic mirror' in Japanese) refers to a bronze mirror originating from ancient China that reflects an image to a distant wall when the Sun shines on the mirror. A relief pattern, resembling the projected image, is engraved on the back side of the mirror; no pattern can be seen on the front side by the naked eye.

  • Free Pdf Principles Of Machine Tools By A Bhattacharya G C

    Free Pdf Principles Of Machine Tools By A Bhattacharya G C Sen Rapidshare -> DOWNLOAD (Mirror #1) 51f937b7a3 Course Content Driving systems and construction of machine tools, power and efficiency in machine tools, design principles of machine tools, turning machines, milling machines, sawing.

  • Process Mechanism in Shape Adaptive Grinding (SAG), for

    Process Mechanism in Shape Adaptive Grinding (SAG), for Application to Aspheric X-Ray Mirror Molding Dies Yoshiharu Namba, Anthony Beaucamp Richard Freeman (Zeeko LTD) Shape Adaptive Grinding (SAG) is a novel process for freeform machining of difficult materials such as ceramics and hard metals. Despite low stiffness

  • Study on axial-feed mirror finish grinding of hard and

    An axial-feed mirror finish grinding of hard and brittle materials is proposed by controlling grain protrusion parameters. In this grinding, the grinding wheel feed is along the wheel axial

  • Journal of Materials Processing Technology GRINDING OF

    Automatic grinding of toroidal mirrors was tried [3]. The principle of the method is to shape a toroid-shaped (barrel-shaped) grinding wheel and control the relative position of the workpiece and the grinding wheel in the grinding process. Two kinds of grinding operations are possible.

  • Putting the Polish on Epic-Scale Telescope Mirrors Space

    Jan 16, 2016· Putting the Polish on Epic-Scale Telescope Mirrors. to construct the contour map of the mirror’s surface. The basic principle of polishing is to rub the surface with a disk-shaped tool

  • Principles Of Polishing To Perfection YouTube

    Dec 19, 2014· Principles Of Polishing To Perfection types of polishing compounds and equipment necessary to give your jewelry projects a professional looking mirror finish. Putting a mirror finish on an

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