High and New Industrial Zone, Kexue Revenue, Zhengzhou, China
Cast-iron tools require patterns, castings, and heavy machine work, which the amateur usually cannot do for himself. Here I laid out a plan to overcome the difficulty and give amateurs the chance to grind mirrors of any size to a correct spherical form with simple means, and without heavy machine work. A glance at Plate VII, a, shows the principle.
I borrowed a few ideas from the Mirror-O-Matic mirror grinding machine, particularly how to mount the turntable on top of the pulley. Anyone building machinery for cold-working glass should have a look at the MOM web site and plans. There are lots of good ideas there. The
Nov 06, 2020 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.
Large Thin Mirror Making by Mel Bartels. Grinding Machines. Mirror-o-matic. Tom Waineos Desktop GrindingPolishing Machine. Ken Liljas Grinding Machine. Grinding Machine. Figuring. Figuring a Paraboidal mirror by thermal predistortion. Optical Testing.
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
You should plan to make your plaster disk at least the same thickness as your mirror blank. Plaster is a light weight material, so a little extra thickness will not add much weight and will increase the stiffness of the disk and be easier to grip when grinding. Note that Dental Stone is a great alternative to plaster.
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
I plan on grinding and polishing this 12.5 inch mirror to see how well it takes a figure, and if the pattern of the back prints through. I am also planning on making larger diameter versions of this design. I will post updates in the future. Update 021512 I have started the process of rough grinding the 12.5 inch honeycomb-back mirror blank.
Mar 06, 2006 Making a homemade mirror grinding machine - posted in ATM, Optics and DIY Forum I want to make a motorized mirror grinder , any good info on this , i have a couple geared motors , low speed high torque. One more question ...will 1 12 shaft size pillow block bearings work good for a homemade EQ mount Thank you , John
Grinding On the picture below the machine is fine grinding an 8 inch mirror with an 71 tool 143 mm diameter and 9 micron aluminium oxyde. The bent lines on the mirror are the effect of the tool turning - with respect to the mirror - faster at the central part of the mirror as compared to the edge zones.
Mirror Grinding Machine - Cloudy Nights. 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 get price
Making a Mirror takes Hundreds of Hours of Work. Not True A 6 or 8 mirror should take about 40 to 80 hours of effort. While this is a non-trivial amount of time, the mirror can be completed in a few months, and certainly within a year. Most people work one to three hours a day on their mirror
A local machine shop would finish a 1 shaft and 12 steel plate for 115. Covington Covington Engineering Corp., P.O. Box 35, Redlands CA 92773 lapidary machines and supplies will sell me a 12 tapered iron plate for 163, a 1 shaft with bearings for 90 and a whole kit of 16 wheel, splash pan, bearing, shaft, pulleys and belt for 401 ...
Mar 25, 2009 Fixed post mirror making machine - posted in ATM, Optics and DIY Forum I am in the process of constructing a fixed post mirror grinding machine. This will be for grinding a 20 inch mirror. I have successfully ground a 14 inch mirror by hand. I have a 12 hp single phase motor, the shaft rotates at 1400rpm. I want to get this down to 40 rpm using pulleys.
including one as mirror image i.e. circlips face each other NOTE Bearing length includes extra space for felt washers to keep grit out of bearing. Tool Grinder Drawings SHEET 8 OF 21 REV. A A SIZE FILE NAME SCALE 21 Bearing Block PROPRIETARY AND CONFIDENTIAL THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF MARTIN KENNEDY.
A table saw covered with layers of newspaper about 12 inch thick to support the mirror and tool was used as the grinding stand. A wet began by spraying the disks with water and smearing a small amount of grit over the tool or mirror with my fingers. The mirror or tool was then carefully placed on top of the tool or mirror and ...
The numerical control mirror grinding machine is characterized in that the grinding head seat is installed on the polar radius translation bench through the polar angle rotating shaft to form a lower translation-upper rotation polar coordinate movement system. The numerical control mirror grinding machine is more stable in structure, high in ...
There are several grinding machines plans given as examples. I too would recommend the making of a couple of smaller mirrors to get the feel of how things blend when using a machine. I used to remove the arm from my machine and finish off the polishing by hand on the rotating table.
Aug 19, 2019 Gordon Waite is probably one of the better mirror makers using this machine and have incorporated some of his ideas into my plan. I like the fixed-post plan vs others with eccentric drives, because it gets the heavy grinding done in an automated
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Telescope mirror grinding machine plans.Grinding machine for large telescope mirrors 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 spinning work or for stroking work the machine ...
mirror grinding machine plans . Free Mirror Grinding Machine Plans Plans. Your Mirror Grinding Machine Plans project plan should embody some lists Lists of woodworking hardware, the amount and type of wood needed, and the specified hand tools and power tools to complete the project. Note A word of caution about buying woodworking tools.