grinding machine telpe

Making my own fixed post mirror grinding/polishing …

Page 1 of 2 - Making my own fixed post mirror grinding/polishing machine - posted in ATM, Optics and DIY Forum: Hey guys. Im thinking of making my own fixed post mirror grinding/polishing and curve generating machine. Ive got loads of questions regarding the design so Ill just start firing away Do I need an eccentric moving tool to be able to polish a …

Fixed post mirror grinder advice - DIY Astronomer ...

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.

Using the Fixed-Post Grinding Machine for Rough Grinding ...

Gordon Waite sets up his fixed-post mirror grinding machine to begin rough grinding on an 11" f/4.3 telpe mirror. He uses a grinding tool made from dent...

Telpe Mirror Grinding Machines | Crusher Mills, Cone ...

… 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. The grinding machine … 50 Inch telpe (1.3 meter telpe) at the Astronomical …

Telpe Grinding - YouTube

Very old mirror/lens grinding machine. This machine can grind and polish using different stroke patterns, i.e. w-stroke, short strokes, long strokes, etc. C...

US5148232A - Laser apparatus and method for aligning a ...

The apparatus for aligning a crankpin grinding machine recited in claim 3 wherein said means for angularly aligning said laser beam with said means for mounting said laser on said axis of said spindle of said first workhead comprises a telpe, said telpe being movable from the center of said target in the path of said laser beam to a ...

Making the 20 inch Conical Mirror | Pierre Lemay

To do these operations I built a grinding machine which would be used throughout the project. My grinding machine, shown in these pictures, was based on Dilworth's grinding machine seen in the Nov-Dec 1977 issue of S&T: The grinding machine has three spindles. The right spindle is the one on which the mirror is mounted.

Mike's Telpe Workshop

This is my home-built edge grinding machine for grinding down my home-cast mirror blanks. Click to see the whole project. This is a 12.5 inch diameter, 1.5 inch thick, light-weight honeycomb-back telpe mirror blank that I made myself.

Stellafane ATM: Make a Tile Tool

The well used tile tool at right illustrates a couple of maintenance issues. 1. Tiles Grind Away: You may grind through your tiles at the edge, especially if you are making a very fast (low focal ratio) mirror.In that case, you can epoxy a second layer of tiles on over the first.

Grinding Machine for Large Telpe Mirrors

Grinding Machine for Large Telpe Mirrors 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 …

A Modified near-draper, near- MOM telpe grinding …

Bill W, Ian K, David G, and I (Guy B) modified an existing quasi-Mirror-O-Matic machine by changing pulley ratios and changing it into sort of a Draper machi...

Explore how telpe mirrors are made | Astronomy

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 …

Large Thin Mirror Making - BBAstroDesigns

A grinding machine relieves the labor, but is not necessary. A 24" is the largest you can comfortably do solo. ..., Sky and Telpe magazine starting on page 75 carries an article by Toshimi Taki, analyzing mirror cell design to support thin mirrors. ... We choose 220 grit to start because the grinding particles are small enough to move onto ...

THE AMATEUR TELPE MAKER

Treas. and Pres. of the Amateur Telpe Makers of Long Beach, 319 Hermosa Ave., Long Beach, Calif. "IN the March issue of Scientific American . you mentioned your hope of hearing from those who are grinding 20" Pyrex mirrors. Here is our bid for membership in the Twenty-Inch Club. "We received our solid disk on January 9.

Stellafane ATM: Make a Plaster Disk

1.1. Place your mirror blank, mirror surface up, on a clean, level hard work work surface covered with newspaper or cardboard. 1.2. Cover the mirror surface and part of the sides with plastic food wrap. Smooth the wrinkles on the surface as best as possible, as they will imprint themselves on your plaster disk.

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

NC grinding of aspheres has been done but a sufficiently stiff machine with adequate resolution encoders is required together with sufficiently accurate (sub micron) metrology so that achievement of the desired shape can be confirmed before polishing. IIRC REOSC used computer controlled fine grinding on the VLT primary meniscii.

Parabolizing a Telpe Mirror - BBAstroDesigns

- Myron Emerson's Amateur Telpe Mirror Making - GAP 47's machines summary - David Harbour's Understanding Foucault - Albert Highne's Portable Newtonian Telpes - Neale E. Howard's Standard Handbook for Telpe Making - Albert G. Ingall's Amateur Telpe Making, Volumes 1-3 - H. Dennis Taylor's The Adjustment and Testing of Telpe ...

Lenses - Engineering and Technology History Wiki

After grinding, the lens was polished, sometimes using the same lap that had been used to shape it. That required preparing the lap surface to remove roughness. In some cases, it was done by overlaying the surface of the lap with a specially prepared paper. In other cases, a method still used by amateurs to polish telpe mirrors was used.

Stellafane ATM: Pour a Pitch Lap

1. Clean: Make sure your plaster disk is clean and dry.If you are using a glass substrate or tile tool, clean the surface with turpentine. 2. Build a Dam: Using 2" wide masking tape, build a dam at least 3/4" high around the edge of the disk to hold the pitch in when you pour it. Leave a tab at the end by to facilitate later removal.

Pin on Wizard - Pinterest

Rough Grinding a 20" Quartz Telpe Mirror on the Fixed-Post Machine This video shows how to setup a mirror grinding machine for fixed-post grinding, also known as spin grinding or spinning. After setup, you'll see how abrasi...

CUHK Invents World-class Intelligent Grinding Machine for ...

The Department of Mechanical and Automation Engineering at The Chinese University of Hong Kong (CUHK) has recently developed a world-class intelligent grinding machine that includes a unique mechanism for the required grinding, polishing and figuring processes in the making of high precision telpe mirrors of near meter-size diameter.

SITEMA - Special Solution - Electric Locking Unit

The electric Locking Unit KFE is used as a stepless locking device on round rods and holds axial forces in both load directions without axial play. It is used where hydraulic or pneumatic solutions are not possible. The holding force is created by the proven spring-operated clamping system as it is used in SITEMA's hydraulically or ...

Stellafane ATM:Mirror Making Myths

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 about one or two times a week. Homemade Mirrors are of Inferior Optical Quality.

Making a homemade mirror grinding machine - ATM, Optics ...

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 1/2 shaft size pillow block bearings work good for a homemade EQ mount? Thank you, John

Constructing a Grinding Machine for large apertures - ATM ...

Page 1 of 2 - Constructing a Grinding Machine for large apertures - posted in ATM, Optics and DIY Forum: Ive been using a 4.5 equatorial from Orion for many years now and Ive finally got the time and money to build a telpe from the ground up. Unfortunately my local astronomy club has no-one with experience with ATM-ing. Given how interested I am on the …

How To Use Grinder Machine | Crusher Mills, Cone Crusher ...

Mining size reduction machine (comminution equipment) from grinder machine manufacturers veries from ball mill, grinding … grinder machine – ShopWiki ShopWiki has 160 results for grinder machine, including Espressione Cafe Roma Deluxe Espresso/Cappuccino and Grinder Machine, Imperia Spremy Electric Tomato Strainer …

Mel Bartels' Amateur Telpe Making

The I.A.U. named asteroid 17823 Bartels discovered 1998 by J.M.Roe in recognition for my contributions to amateur astronomy. Making is the Key to Knowing. A telpe mirror is arguably the most accurate surface made by human or machine. Amazingly you can grind a mirror by hand and make a telpe with simple hand tools.

Mirror Grinding Machine

My Mirror Grinding Machine. For a long time I've wanted to build a machine for grinding telpe 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. …

SITEMA - Safety Catchers - Applications

Holding the press tool without a ratchet bar to prevent accidents due to hydraulic failures. Officially approved and certified acc. to ISO 16092 (ex EN 693). Safety Catcher (Series K, KR) Safety Catcher (Series K/TA, KR/T)

Amateur Telpe Making Main Page - Stellafane