draper mirror grinding machine

  • draper grinding machine - YouTube

    This is a grinding machine for astronomical parabolic telescope mirrors. The machine can handle primary mirrors up to 80 cm/31.5"We are currently test drivin...

  • Draper Grinding Machine - Máquina Draper - YouTube

    Máquina para desgaste e polimento de espelhos de telescópio até 600mm de diâmetro.Configuração Draper.

  • Document sans nom - Astrosurf

    Document sans nom. They may be classified into three main groups : Draper/Hindle-type machines : This is the mother of all machines. Its principle seems to have been elaborated by Huygens, about 1738, and improved by Lord Rosse, and more recently by Henry Draper, an American astronomer. Here are the different parts which compose this machine ...

  • Document sans nom - Astrosurf

    Grinding action of a polishing lap : ... machine figuring a mirror in a fully automatic process, the operator just pressing a button to get the perfect mirror, is a complete dream. Whatever happens, an operator's experience and reactivity will remain essential to ensure a full success to the job. ... (Draper-type machine with offset arm ...

  • Newport Glass Works, LTD. Grinding, Polishing and Figuring ...

    This is why you don't want to make mirrors to be worked on machines too thin. For 16" to 18" mirrors, 1.62" thick is the thinness I would recommend. There are several ways to support the mirror on a grinding and polishing machine turntable, but first make sure the turntable itself is rigid. It

  • Mirror Grinding Machine | Products & Suppliers ...

    In September 1858, shortly after his return from Europe, Draper began the construction of a mirror grinding machine of Lord Rosse’s design. Advances in Abrasive Technology XVI The superhard diamond grinding wheel with large-grit size plays an important

  • Document sans nom - Astrosurf

    Document sans nom. They may be classified into three main groups : Draper/Hindle-type machines : This is the mother of all machines. Its principle seems to have been elaborated by Huygens, about 1738, and improved by Lord Rosse, and more recently by Henry Draper, an American astronomer. Here are the different parts which compose this machine ...

  • mirror grinding machines. - ATM, Optics and DIY Forum ...

    Oct 03, 2006 · Thanks for the video Jim. I had no idea that these machines ran at those speeds. When I built my machine, I didn't have a computer or any books on building grinding machines so I built one that mimics the stroke a person would do. For instance, my turntable rotates at just one RPM and the stroke eccentric turns at 36 RPM.

  • 24" Mirror Grinding and Polishing Machine - IceInSpace

    Jun 06, 2010 · I started this thread to record my building progress of a new mirror grinding and polishing machine. This machine will be capable of handling mirror sizes up to 22". I have decided that 22" is the absolute maximum otherwise becomes too cumbersome to move around. I have won 2 x 1/3 horse power single phase electric motors on eBay, at $45 each.

  • Draper Tools Official Website | Hand Tools, Power Tools ...

    Draper Tools Official Website. Established in 1919, Draper Tools is a supplier of quality trade, professional and diy tools. Check out the massive range of tools available from one supplier.

  • mirror making machinery

    mirror grinding machine. Making a homemade mirror grinding machine ATM,I made two turntables: a 22 inch and an 18 inch The larger one is for grinding and polishing mirrors and is also used at higher speeds to centrifugally cast resin mirrors, an experiment

  • grinding / polishing machine for telescope mirrors ...

    Sep 29, 2014 · Mechanical assembly is complete. The machine could start grinding now. I still need to build the electronics, and then there's painting and finishing.

  • Explore how telescope mirrors are made | Astronomy

    Jul 27, 2021 · Figuring is done by passing a second tool, referred to as a pitch lap, over the mirror by hand while the mirror rotates on the grinding machine. The grit used for this stage of production ...

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  • The Best Glass Cutter & Cutting Systems: 2020 Buyer's ...

    Mar 19, 2020 · A glass cutter is the most important tools in a stained glass artist’s tool kit.That is why it is important to seek out the best glass cutter or cutting systems available. Stained glass artists know that having the best cutting tool will produce perfect score lines.

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    About. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including quarry, aggregate, and different kinds of minerals.

  • Bench Grinder Polisher Best 10 Workbench Mountable Tools

    Mar 30, 2020 · The DS small bench grinding machine sharpener with 240 Volts is a modern tool featuring a wheel size of 150 mm. It is small sized and compact, perfect for modest grinding and even sharpening uses. It employs a high powered, upkeep free induction electric motor. Features A

  • 1992JBAA..102..198N Page 198 - adsabs.harvard.edu

    SAO/NASA Astrophysics Data System (ADS) Title: Constructing grinding and polishing machines Authors: Nichol, J. R. & Wall, J. Journal: Journal of the British Astronomical Association, vol.102, no.4, p.198-204 Bibliographic Code: 1992JBAA..102..198N

  • Mirror Grinding Machine | Products & Suppliers ...

    In September 1858, shortly after his return from Europe, Draper began the construction of a mirror grinding machine of Lord Rosse’s design. Advances in Abrasive Technology XVI The superhard diamond grinding wheel with large-grit size plays an important

  • ON THE MODERN REFLECTING TELESCOPE, AND 'rHE MAKING

    GRINDING AND POLISHING MACHINES. TIlE grinding and polishing machines used by the writer are somewhat similar in principle to Dr. Draper's machine, sho.wn in Fig. 25 of his book, but are more elaborate. I shall describe here the machine used in making the 5·foot mirror, both because it embodies most of the essential features of a-grindingand ...

  • 24" Mirror Grinding and Polishing Machine - IceInSpace

    Jun 06, 2010 · I started this thread to record my building progress of a new mirror grinding and polishing machine. This machine will be capable of handling mirror sizes up to 22". I have decided that 22" is the absolute maximum otherwise becomes too cumbersome to move around. I have won 2 x 1/3 horse power single phase electric motors on eBay, at $45 each.

  • Draper Tools Official Website | Hand Tools, Power Tools ...

    Draper Tools Official Website. Established in 1919, Draper Tools is a supplier of quality trade, professional and diy tools. Check out the massive range of tools available from one supplier.

  • H D (1837-1882)

    Glass Telescope, Fifteen and a Half inches in Aperture, and Its use in Celestial Photography, Draper describes his investigations into glass-grinding machines (seven different models), glass astronomical mirrors, optical testing, telescope mounts, clock drives and photographic laboratories. This book was

  • Robotic mirror grinding? - ATM, Optics and DIY Forum ...

    May 31, 2021 · PeteDCard81, on 21 Jun 2021 - 10:11 AM, said: The Hubble primary mirror was designed to the correct specification (parameters) but ended up misshaped because of an incorrectly assembled null optics test tool. This test tool was acquired from the Perkin Elmer side of the shop that did work on Defense projects.

  • mirror making machinery

    mirror grinding machine. Making a homemade mirror grinding machine ATM,I made two turntables: a 22 inch and an 18 inch The larger one is for grinding and polishing mirrors and is also used at higher speeds to centrifugally cast resin mirrors, an experiment

  • Bench Grinder Polisher Best 10 Workbench Mountable Tools

    Mar 30, 2020 · The DS small bench grinding machine sharpener with 240 Volts is a modern tool featuring a wheel size of 150 mm. It is small sized and compact, perfect for modest grinding and even sharpening uses. It employs a high powered, upkeep free induction electric motor. Features A

  • Polishing Machine, Grinding Machine - Alibaba

    AS a leading manufacturer in china more than 18 years, Dongguan Jinzhu Machine Equipment Co.,ltd is specialized in design and produce polishing machine, buffing machine and grinding machines. A confortable environment with A/c office, 20+ professional & experienced engineers are working and focusing on designing and researching.

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  • HENRY DRAPER - National Academy of Sciences

    grinding-machine was contrived, and experiments were made with three 151-inch glass disks, as well as with some smaller ones. Three mirrors of the same focal length and aperture, Dr. Draper says, are almost essential in working, for it not infrequently happens that two in succession will be so similar that a third is required for at-

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  • Mirror surface finishing of hardened stainless steel using ...

    Conventional research on mirror surface finishing can be classified into three approaches: the first is abrasive processes such as ball-end polishing applied on CNC machining center [, , ], ball-end magnetorheological tool [, , ], and electrolytic in-process dressing grinding (EILD) [14,15], the second is the plastic deformation process such as ...

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