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Fixed Post Mirror Grinding Machine

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Fixed abrasive grinding of CVD SiC mirrors ScienceDirect

Fixed Abrasive Grinding Of Cvd Sic Mirrors Sciencedirect

Apr 01, 1994 No data are available for time spent performing the super-polishing operation shown in this table. PRECISION ENGINEERING 113 Bifano, Yi, and Kahh Fixed abrasive grinding Table 4 Grinding conditions on PVTB machine Flat mirror f400 SiC mirror f.14 SIC mirror Grinding geometry Contour grinding, Contour grinding, peripheral wheel, peripheral wheel.

making a mirror grinding machine

Making A Mirror Grinding Machine

Apr 30, 2021 Building a fixed post mirror grinding machine Aug 19, amp A few years ago, I was thinking about hand grinding a mirror I watched a video of John Dobson hand grinding a mirror I dont really remember how big it was, but it was big Maybe 14 Maybe larger John was no youngster in this video and even though he is a master, he sure put a hellova lot of labor into that mirror.

6 DallKirkham

6 Dallkirkham

Jul 08, 2021 Im working on a fixed post mirror grinding machine big enough to handle the 600mm so I plan to mount my drill press head on the rails that the post mounts on and spin the disk as I drill to ensure the hole is centered. Im not bothering to do the small mirror on the machine

grinding mirror machine pdf Products

Grinding Mirror Machine Pdf Products

grinding mirror machine pdf. 250tph river stone crushing line in Chile. 200tph granite crushing line in Cameroon. 250tph limestone crushing line in Kenya. 250tph granite crushing line in South Africa. MCC 120tph granite crushing line in Zimbabwe. 400tph crushing plant in Guinea. Chat Online

build a mirror grinding machine

Build A Mirror Grinding Machine

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. get price Telescope Making Links - Designs and Techniques

Journal of Materials Processing Technology GRINDING

Journal Of Materials Processing Technology Grinding

the method shown in Fig.lb. To grind a toroidal mirror with large curvature radii and high shape accuracy, a CNC machine with high-resolution servomechanisms is needed. This machine must have the capacity to change the angle 13 precisely in the grinding process. There are such good machines for ultra-precision

800mm the mirror DIY Astronomer Stargazers Lounge

800mm The Mirror Diy Astronomer Stargazers Lounge

Jun 10, 2020 At about the same time we made our MoMs there was that guy Gordon Waite building his mirror mirror grinding machine. He uses a fixed post grinding machine. iow the tool is stationary. He has a set of movies on YouTube. Theres even a set of movies on very fast mirrors.

Waite Research 20quot F30 Project quotJquot

Waite Research 20quot F30 Project Quotjquot

For this, I ground with about 25 to 35 pounds of weight added on top of the mirror, running the fixed-post grinding machine full out at 60 rpms. After grinding and polishing, the mirror was figured by hand using sub-diameter pitch polishers. You can see a photo of the mirror

Waite Research Mirrors For Telescopes Science

Waite Research Mirrors For Telescopes Science

The new fixed-post grinding machine is working on the 14.75 quartz mirror. This video shows rough grinding on the blank, which is done to get the mirror to the exact focal length we want. This mirror will have a focal length of 60 , which is F4. A steel-nut and die stone tool is fixed in place with a slight overhang over the edge of the mirror.

Grinding Machines DANOBAT

Grinding Machines Danobat

Grinding. DANOBAT presents the range of high precision grinding machines developed to suit specific applications of our customers. These solutions have been conceived in close collaboration with end users resulting in a product comprising the machine itself and all related processes, hence offering a complete final tailor made solution.

Waite Research 24quot F35 Mirror Fabrication

Waite Research 24quot F35 Mirror Fabrication

After the tool was hard, I used a rotary tool and diamond bit to route shallow grooves between all the tiles. This helps disperse the abrasives, helps the tool grind faster, and avoids suction locks between the tool and mirror. The big glass was placed on the turntable of my fixed-post grinding machine

Waite Research 20quot F45 Mirror Fabrication

Waite Research 20quot F45 Mirror Fabrication

The grinding sequence was 25-micron, 12-micron, and 9-micron then finishing with 5-micron. The mirror was rough polished using high-speed fixed-post polishing on a 75 pitch polisher. Rough parabolization was handled with a 40 lap to rapidly move the mirror

Document sans nom Astrosurf

Document Sans Nom Astrosurf

Document sans nom. Grinding action of a polishing lap Many different factors come into action when a polishing lap is used to wear away glass. So much so that it is illusory to put this action into an equation. Yet, in order to understand better how optical surfaces are brought to the correct shape we can identify and study different ...

China 8k Mirror Polishing Machine 8k Mirror Polishing

China 8k Mirror Polishing Machine 8k Mirror Polishing

China 8k Mirror Polishing Machine manufacturers - Select 2021 high quality 8k Mirror Polishing Machine products in best price from certified Chinese Machine, Grinding Machine suppliers, wholesalers and factory on Made-in-China.com

Waite Research Telescope Mirrors Home

Waite Research Telescope Mirrors Home

Apr 29, 2010 Fine Grinding a 20 Quartz Telescope Mirror. Rough Grinding on the Fixed-Post Mirror Grinding Machine. Hogging the Curve on a 20 f4.5 Quartz Telescope Mirror. Astronomy magazine names Waite Researchs Renegade telescope a top astro product of 2015. The 20 Renegade telescope offers fabulous viewing without climbing a ladder.

Grinder sanding disc making machine

Grinder Sanding Disc Making Machine

Making my own fixed post mirror grindingpolishing machine - ATM ... Feb 14, 2015 ... Making my own fixed post mirror grindingpolishing machine ... to use an angle grinder with a diamond cutting disk attached to a spherical... More details Get Price

MirroroMatic

Mirroromatic

It is only a rough guide for speeds and techniques. If Mirror-o-Matic users will send details of their successes and failures, I will gladly post them on the Internet for the benefit of others. Machine grinding and polishing is almost always done with the mirror on the bottom MOB and the tool on top TOT.

AstroTel Mirror grinding machine

Astrotel 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

Mirror grinding machine construction log James Crombie

Mirror Grinding Machine Construction Log James Crombie

I also made a short animation of the grinding movement in AVI1.7mb or as a animated GIF2mb GRINDING LOG-----July 22, 2003 Machine settings - Platter set at 15rpm - Overarm speed - 6 strokes per min fixed, Stroke- 2.375 aprox 10 lbs weight on mirror.

Waite Research 15quot F45 Telescope Mirror

Waite Research 15quot F45 Telescope Mirror

After fine grinding, the mirror was rough polished on the fixed-post machine using a pitch polisher. The Ronchigrams in the photo area show the progress of the mirror from rough polishing through figuring. After the mirror is finished up, I use a diamond stylus to engrave my name, the focal length and the date on the back of the optic.

Build your own telescope part 1 The mirror Thomas

Build Your Own Telescope Part 1 The Mirror Thomas

Rough grinding. This step is about making one side of the glass concave. It will give your mirror its overall focal ratio. If you make the centre deep, you will end up with a fast telescope e.g. FD 4 well suited for deep sky observations. On the opposite, a shallow mirror e.g. FD 8 will be performing very well on planets and the moon.

Parabolizing a Telescope Mirror BBAstroDesigns

Parabolizing A Telescope Mirror Bbastrodesigns

As measured from where the mirrors center rays cross the mirrors axis, each zone should cross at a point r22R, where little r is the zones radius and big R is the Radius of Curvature this is for a moving light source, for a fixed light source double the values. Consider the 10 inch 25cm F5 as pictured.

telescope grinding machine

Telescope Grinding Machine

Nov 06, 2020 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 16 the diameter of the tool, or about 18 diameter of the mirror, and is fixed

Building a fixed post mirror grinding machine Page 2

Building A Fixed Post Mirror Grinding Machine Page 2

Oct 13, 2019 Re Building a fixed post mirror grinding machine Post by Kanadalainen Mon Aug 19, 2019 1239 pm In this image I have put together a gear reduction stage for my DC motor.

Mirror Grinding Machine

Mirror Grinding Machine

My Mirror Grinding Machine. For a long time Ive wanted to build a machine for grinding telescope mirrors. Dennis Rechs M-o-M designs finally inspired me to just get up and do it. Over the years, Id been collecting motors, gear boxes, pulleys, etc. Most of them came from industrial junk yards.

Fixed post grindingpolishing with full size tools ATM

Fixed Post Grindingpolishing With Full Size Tools Atm

May 03, 2011 Fixed post grindingpolishing with full size tools - posted in ATM, Optics and DIY Forum I am in the process of making my convex secondary for my 14.5 Harmer Wynne telescope. Can I use a fixed post grinding machine to generate the desired radius with a full size tool What kind of over hang are we talking about here I am currently using a pottery wheel with VFD for rpm control for a ...

Mirror Grinding Machine Hackaday

Mirror Grinding Machine Hackaday

Sep 26, 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.

Fixed post mirror grinder advice Page 2 DIY Astronomer

Fixed Post Mirror Grinder Advice Page 2 Diy Astronomer

Oct 29, 2018 Fixed post mirror grinder advice. By Velikovsky, March 4, 2011 in DIY Astronomer. Share Followers 7. Prev 1 2 Next Page 2 of 2 . Recommended Posts. ... I am looking for plans in order to build my own fixed post for grinding machine Link to post Share on other sites. fwm891 2,360 Posted October 26, 2018. fwm891. Retired Photographer Members ...

Mirror Grinding Machine ATM Optics and DIY Forum

Mirror Grinding Machine Atm Optics And Diy Forum

Sep 29, 2010 Mirror Grinding Machine - posted in ATM, Optics and DIY Forum I have some interest in building a grinding machine for possible up to an 18 mirror , but something that will also do a 6 or 8 mirror. I have plans for the Mir O Matic but would like to do something a bit more modern. I have some ideas about using a AC drive and a large aluminum disk for the turntable and have made a parts list

Astronomy Options Astronomy Mirror Making Telescopes

Astronomy Options Astronomy Mirror Making Telescopes

Currently manufacturing a 16 diameter 1 thick plate glass f3.88 Newtonian telescope mirror. Doing this with my new fixed post grinding machine built this summer. Work is progressing well, and very efficient.

Simulator not only polishing parabolic mirrors POLSIM

Simulator Not Only Polishing Parabolic Mirrors Polsim

Mar 12, 2018 Tool diameter default 150mm enter 375 as the fixed post machine requires a tool with a diameter of about 75 of the one of the mirror being worked Number of zones default 30 optionally you can enter 60, only for a perhaps better rendering of the excavation through the smaller width of the histograms. .

telescope mirror grinding machines MC World

Telescope Mirror Grinding Machines Mc World

Mirror Grinding Machine. My Mirror Grinding Machine. For a long time Ive wanted to build a machine for grinding telescope mirrors. Dennis Rechs M-o-M designs finally inspired me to just get up and do it. Over the years, Id been collecting motors, gear boxes, pulleys, etc. Most of

Building a fixed post mirror grinding machine

Building A Fixed Post Mirror Grinding Machine

Aug 19, 2019 Re Building a fixed post mirror grinding machine Post by Kanadalainen Mon Aug 19, 2019 1210 pm I I had a nice piece of 34 stainless dowel that was begging to be used.

Fixed post mirror grinder advice DIY Astronomer

Fixed Post Mirror Grinder Advice Diy Astronomer

Nov 01, 2011 Basically there are two types of grindingpolishing 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

Building a fixed post mirror grinding machine Page 2

Building A Fixed Post Mirror Grinding Machine Page 2

Oct 13, 2019 Re Building a fixed post mirror grinding machine. Update summary Lots of work to get to this point. Things I need to probably change or fix My gearing of the DC motor. I will need a slow speed for polishing 5 rpm, and faster speeds for hogging out and fine grinding 15- 30 rpm, so likely need to think about adding a gear reduction.

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