Posted July 24, 2021. A few years back we made 3 MoM's. Two that can handle 20" mirror and a third one capable of grinding a 10" mirror. We built the two larger machines in my workshop. They're standing side by …
You'll want to first determine the shape of your mirror and the focal length that it will eventually have. When designing a telpe of this style, there is a very, very handy tool called Newt for the Web.You can put in your mirror diameters for the one we'll be making (primary mirror) and the secondary mirror, as well as the focal length of the primary …
George Willis Ritchey built this mirror grinding machine at the Yerkes Observatory in Williams Bay, Wisconsin, in the late 1890s. Under the sponsorship of George Ellery Hale, the machine was used to grind a series of telpe mirrors starting with a 24-inch and then a 60-inch mirror for a telpe initially intended for the Yerkes Observatory ...
I am on the half of the way to make a mirror grinding machine inspired by original M-O-M design. I made the pulley arrangement such a way that, both the turn …
Page 1 of 2 - Mirror grinding machine-runout - posted in ATM, Optics and DIY Forum: I am in the process of making a fixed post mirror grinding machine, big enough for a 20 inch mirror. I have now got the motor, pulleys, two shafts and turntable all together and working. The turntable rotates at around 25 rpm,which I think should be …
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I've decided to build my own fixed-post glass grinding and polishing machine. Gordon Waite is probably one of the better mirror makers using this machine …
High-efficiency mirror grinding of single-crystal diamond substrate was investigated. • A rotary grinder with a #15000 diamond wheel was used for mirror grinding. • A record high removal rate (0.04 μm/min) was achieved. • The processed surface was ultrasmooth with ~0.1 nm average surface roughness.
Drive Motor, Mirror Grinding Machine, G. W. Ritchey. National Air and Space Museum. Addthis Share Tools
The mirror grinding machine that Leonardo designed was an innovative and efficient mechanism for producing high-quality optical surfaces. It was based on the use of a rotating tool that was driven by a series of gears, which allowed for precise control over the grinding process.
Mirror-o-Matic and fixed position tool grinding - posted in ATM, Optics and DIY Forum: I plan on using a Mirror-o-Matic type grinding machine soon. The fixed position technique Mark Cowan uses …
Please visit the active Mirror-o-Matic discussion forum on Groups.io. Zip archive of deprecated Yahoo Groups discussion (2000-2019) 307 Contact Dennis
Unlike most other mirrors in your home, the mirror coating of a Newtonian mirror is actually applied to the front face of the glass, not the back. The light collected by the Newtonian primary mirror does not pass through any glass until it reaches the eyepiece. It simply reflects off the curved concave mirror face which focuses all the light
DOI: 10.1016/S0890-6955(96)00092-2 Corpus ID: 109025261; Mirror surface grinding of ceramics using a three-axis precision cnc grinding machine @article{Kim1997MirrorSG, title={Mirror surface grinding of ceramics using a three-axis precision cnc grinding machine}, author={Hyun Surk Kim and Dai Gil Lee}, …
Making a homemade mirror grinding machine - posted in ATM, Optics and DIY Forum: I want to make a motorized mirror grinder …
Turning the screw-eye raises and lowers the grinder height in minute increments. A flap of Velcro holds down the trigger on the grinder so it is always on. The grinder is controlled from a remote air valve in the air line. Here is a front view of the cutter arm. It fits on the same pipe post that the grinder arm sits on.
George Willis Ritchey built this mirror grinding machine at the Yerkes Observatory in Williams Bay, Wisconsin, in the late 1890s. Under the sponsorship of George Ellery Hale, the machine was used to grind a series of telpe mirrors starting with a 60-inch mirror for a telpe initially intended for the Yerkes Observatory. The grinding ...
Grinding Machine for Large Telpe 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 …
The mirror machine came to me as a result of astronomical horse-trading, swapping a large GEM mount and a 8" Newtonian OTA for the machine as it was and a start kit consisting of two 6" blanks and the grit, rouge and pitch to manufacture a mirror. The grinding machine had been built to the design of the mirror-o-matic design of Dennis …
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.
Diamond wheel grinder rubbed against the mirror face. Use a sagittal jig, a curved wooden tool holding the grinder such that the grinder makes an arc across the mirror's face. The mirror needs to be constantly rotated. Or use a slightly tilted table under a drill press, the angle being calculated from the mirror's radius and desired radius of ...
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 work piece spindles, was employed for the experiment.
Grinding machine with driven overarm Over the summer of 2005, I modified the small grinding machine to have a driven overarm, and it is geared down from the turntable drive by about 14.5:1. This is similar to the mirror-o-matic machines, but it is built with good quality bearings and there is little slop in the machine (and none in the turntable).
Up for sale is this SIDAI 6 spindle lens/mirror grinding machine. Each spindle is individually clutched, and each spindle can be set independtly for stroke length and adjusted for stroke speed. The main motor sets the spindle speeds, but there is an independent adjustment for each spindle where that can be varied a bit with the friction disk ...
Mirror grinding machine 05-14-2004, 06:04 PM. Have any of you ever built one of these? I have a 3hp motor and a 20:1 worm drive that I think could probably be used for such a device. Looking for ideas on what to look out for when building and deffinetly what not to do. Am planning on a steel 2 X 2 frame and as large a turntable as 3 hp could turn.
Making a telpe mirror. To start, a new mirror blank is "sanded" down to create a precise parabolic curve in a process called grinding. To do that, the blank is paired with a device called ...
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 …
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.
Mirror Grinding at the Spring 1998 Stellafane Mirror Workshop in the McGregor Observatory Rough Grinding. The purpose of rough grinding is to start to cut a spherical concave surface into the mirror blank. For a 6" mirror with a 48" focal length, the depth of the curve is 0.047".
Using a high-quality buffing bar, you can achieve a flawless finish by buffing the mirror. Diy Telpe Mirror Grinding Machine. A do-it-yourself telpe mirror grinding machine is a great way to learn about astronomy and get involved in the hobby. It can be a challenging and rewarding experience, and it's a great way to get started in the ...
