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Mirror Grinding Machine

My Mirror Grinding Machine. For a long time I've wanted to build a machine for grinding telescope mirrors. Dennis Rech's M-o-M designs finally inspired me to just get up and do it. Over the years, I'd been collecting motors, gear boxes, pulleys, etc. Most of them came from industrial junk yards. To use these parts, I had to modify some of Dennis' plans. How I did it is described below. This machine is the result. It is capable of grinding up to 20" telescope mirrors.

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Mirror Grinding Machine » Leonardo Da Vinci's

The mirror or lens grinding machine is a masterpiece of mechanical engineering. It has several gears in mesh at all times and also has several variable settings built into it.

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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. I also built another machine of the same type. Also a Hindle type machine for a southern firm to grind and polish 12.5" mirrors. Later

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telescope mirror grinding / polishing machine

15.02.2016  telescope mirror grinding / polishing machine with tachometer. Watch later. Share. Copy link. Info. Shopping. Tap to unmute. If playback doesn't begin shortly, try restarting your device. Up Next.

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Mirror Grinding Machine - YouTube

25.06.2013  this is my nearly completed fixed post mirror grinder. still some work to do left, but this is a test for functionality. there's also a short vid on my dig...

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Making a homemade mirror grinding machine -

06.03.2006  I am assuming that you do enough mirror grinding and polishing to justify an investment in a bench in the first place. I've seen Mirror O Matics and while they seem to do reasonably good work, most seem to sit in the Gypsumer after one mirror and collect dust. As for the second motor to drive an over-arm. that has been shown to not be necessary. You can rig a simply overhead frame and the tool will

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Mirror Grinding Machine » Leonardo Da Vinci's

Mirror Grinding Machine Leonardo’s Mirror Grinding Machine. leonardo miror grinding machine. The mirror or lens grinding machine is a masterpiece of mechanical engineering. It has several gears in mesh at all times and also has several variable settings built into it. This machine was most likely designed by Leonardo while he was either investigating the different ways that light reflected ...

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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. I also built another machine of the same type. Also a Hindle type machine for a southern firm to grind and polish 12.5" mirrors ...

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Mirror Grinding Machine (Complete) - India -

28.08.2015  Its a near Mirror o Matic mirror grinding machine..... It runs at 50 RPM fixed, The eccentric has dual speed, 17 RPM 41 RPM. I built it in 6 months..... ...

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Mirror Grinding Machine Hackaday

26.09.2006  Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand, Laurie Hall built this mirror grinding machine from scratch. His site has notes covering ...

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Mirror Grinding - Diamond Curve Generating

21.09.2008  hubach.deviantart/This is my father's garage where he is currently working on his telescope hobby. The Diamond curve generating machine in this vi...

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Leonardo Da Vinci's mirror making machines

One machine is designed for grinding concave mirrors of small focal length. The other machine, a much larger piece to implement, grinds mirrors of large focal lengths. Though Leonardo da Vinci creates sketches of mirror grinding, one crucial and logical question to ask is whether he used such mirrors in his artwork or drawing. On this subject, a bevy of scholarly research has surfaced both ...

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Mirror-o-Matic mirror making machine - ATM

Mirror-O-Matic grinding machine. When I decided in 2009 after a ten-year break to get into mirror making again, it quickly became clear to me that I would need to construct machine, as hand grinding big mirrors is not something very beneficial for the hands of a musician. I started to look around and quickly found Dennis Rech's website about the M-o-M (Mirror – o – Matic) that he developed ...

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jeffbaldwin.org

Fixed-post machine grinding is where the mirror is on a turntable rotating around 20 PRM [speeds vary], and a 75% tool is on top. They are already curve-generated. The tool is hanging over the mirror by 1/6 the diameter of the tool, or about 1/8 diameter of the mirror, and is fixed in this position. The motor turns the mirror and the differential rotation enables the grit and water to grind ...

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Waite Research Telescope Mirrors :: Home

Measuring the Radius on the 20" Mirror. DIY Spherometer, Part 1: The Build. DIY Spherometer, Part 2: Calibrating and Using the Instrument Recycling Pitch for Laps for the the 20" Quartz mirror. Pouring a 15" Pitch Lap. Channeling a 15" Pitch Lap. Fine Grinding a 20" Quartz Telescope Mirror. Rough Grinding on the Fixed-Post Mirror Grinding Machine

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Mirror-o-matic

The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 MB Contact Dennis ...

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Grinding Machine for Large Telescope Mirrors

Can be configured for spin or stroke work. Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches [1.1m] in diameter. By slipping on and off a couple of belts, the machine can quickly be reconfigured for

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Leonardo Da Vinci's mirror making machines

In his Codice Atlantico, Leonardo offers two of sketches of mirror making machines. One machine is designed for grinding concave mirrors of small focal length. The other machine, a much larger piece to implement, grinds mirrors of large focal lengths.

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Mirror-o-Matic mirror making machine - ATM

The M-o-M is a marvellous machine due to its simplicity and yet refined design. It is extremely flexible accommodating mirror sizes from 4 inch up to 20 inch (with slight modifications) and can be used for all three steps necessary in producing a mirror.

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mirror grinding machines. - ATM, Optics and

03.10.2006  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. The eccentric that controls the side to side motion turns at 11 RPM. I can adjust the length of the stroke and the side to side motion as well as the position of the mirror

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Waite Research Telescope Mirrors :: Home

Rough Grinding on the Fixed-Post Mirror Grinding Machine Hogging the Curve on a 20" f/4.5 Quartz Telescope Mirror Astronomy magazine names Waite Research's Renegade telescope a top

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Wafer Backside Grinding - Okamoto Machine

Grinding machine, Semiconductor equipment, Gear and Casting only One for Total Abrasive Machine manufacturer in the World ... ・Less than Ra1Å ultra luminance, ultra mirror surface is possible. Specification. GDM300 standard specification. GDM300 standard specification. 200mm/300mm back grinder GNX200B / 300B . Grinding Machine ~200mm/300mm back grinder~ 200mm back grinder

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Making mirrors for giant telescopes - SPIE Digital

The Starfire project provided much of the funding for a new polishing lab built in 1990 and equipped with an 8 m grinding and polishing machine and a 24 m test tower, which were first used to figure the 3.5 m mirrors. The Mirror Lab was not free to choose the focal ratios, so these mirrors were more conservative at f/1.5 – f/1.75. During the same time frame we expanded the furnace to 8 m capacity, and in 1992-94 cast 6.5 m mirrors

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Stellafane ATM:Mirror Making Myths

With the Mirror on top, the tool on the bottom, and coarse grit in between, we start grinding with the mirror overhanging the tool. We rub the center of mirror against the edge of the tool, and this wears a depression in the center of the mirror (the edge of the tool wears down also, so that the tool becomes convex (a "hill" in the center) and the mirror becomes concave (a shallow "bowl").

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Mirror-o-matic

The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 MB Contact Dennis ...

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Stellafane ATM: Materials Tools

Plastic Water Bucket for dunking your mirror and tool to clean off spent grit. Plastic is soft and won't chip your mirror. Do not wash grit down a sink - it will harden in your pipes and you will have to call the plumber. Spray Bottle to spray water on your grit when you grind. Sharpening Stone to bevel your mirror with. This is a carborundum stone, used to sharpen knives, available in hardware stores. This stone is

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China Mirror Grinding Machine, China Mirror

China Mirror Grinding Machine, China Mirror Grinding Machine Suppliers and Manufacturers Directory - Source a Large Selection of Mirror Grinding Machine Products at grinding machine,surface grinding machine,crankshaft grinding machine from China Alibaba

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Mirror Grinding - Diamond Curve Generating

02.07.2015  Mirror Grinding - Diamond Curve Generating Machine. Search. Library. Log in. Sign up. Watch fullscreen. 6 years ago 6 views. Mirror Grinding - Diamond Curve Generating Machine. Ardentbony. Follow. 6 years ago 6 views. Mirror Grinding - Diamond Curve Generating Machine. Report. Browse more videos. Playing next. 2:14. Leonardo da Vinci Inventions - Mirror grinding/polishing machine ...

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Mirror grinding machine construction log -

suited to building a mirror grinder with. The machine contained a large speed reducer (47-1 ratio), a variable speed mechanism, motor mount and tachometer. the frame was too small to be able to fit the over-arm drive in so I left it. I started out copying all of the existing parts into my CAD program. I then sort of filled in the blanks. Cad drawings

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What is the difference between CNC grinding

CNC precision grinder and mirror grinding are completed by micro-cutting and friction polishing of the micro-edges on the abrasive grains of the grinding wheel. Grinding requires that the micro-edges on the surface of the grinding wheel should be arranged neatly, the crushing should be uniform, the number of micro-edges per unit area should be more, and the equiheight should be better.

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Waite Research Telescope Mirrors :: Home

Rough Grinding on the Fixed-Post Mirror Grinding Machine Hogging the Curve on a 20" f/4.5 Quartz Telescope Mirror Astronomy magazine names Waite Research's Renegade

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Fixed post mirror grinder advice - DIY

01.11.2011  Basically there are two types of grinding/polishing machine. The ‘traditional’ type which involves the mirror rotating at a relatively slow speed, a few rpm for a big mirror (16-20 inches) with the tool moving across the mirror, from side to side, at a higher rpm depending on the size of the mirror and/or tool. This is the method that I use; one of my machines is shown in the first attachment.

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Stellafane ATM:Mirror Making Myths

With the Mirror on top, the tool on the bottom, and coarse grit in between, we start grinding with the mirror overhanging the tool. We rub the center of mirror against the edge of the tool, and this wears a depression in the center of the mirror (the edge of the tool wears down also, so that the tool becomes convex (a "hill" in the center) and the mirror becomes concave (a shallow "bowl").

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Document sans nom - Astrosurf

As early as 1788, William Herschel (1738-1822) built a polishing machine that allowed him to complete a 50' mirror, in 1789. Unfortunately there is no description left of this machine that William Herschel kept secret until his death. He only says that its fabrication was necessary to replace the number of workers necessary to complete his larger mirrors, a number that would, at times, amount to a dozen men. Yet,

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Mel Bartels' Amateur Telescope Making

A telescope mirror is arguably the most accurate surface made by human or machine. Amazingly you can grind a mirror by hand and make a telescope with simple hand tools. With such a telescope, Saturn with its rings are stunning. The purpose of a telescope is to enable our vision quest. A good telescope brings joy and a world beyond words; a good telescope gives crispy images across a

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Wafer Backside Grinding - Okamoto Machine

For thin wafer, Grinding/Polishing/Detape fully automatic process by 1 machine. Feature. ・The process from back grinding to wafer mounting continuously by fully automatic system, which enable to grind till 25um thickness. ・With 2 head polishing stage, throughput is almost double compared with 1

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