doppstadt replacement grinder wear parts

Jaw Crusher

As a classic primary crusher with stable performances, Jaw Crusher is widely used to crush metallic and non-metallic ores as well as building aggregates or to make artificial sand.

Input Size: 0-1020mm
Capacity: 45-800TPH

Materials:
Granite, marble, basalt, limestone, quartz, pebble, copper ore, iron ore

Application:
Jaw crusher is widely used in various materials processing of mining &construction industries, such as it is suit for crushing granite, marble, basalt, limestone, quartz, cobble, iron ore, copper ore, and some other mineral &rocks.

Features:
1. Simple structure, easy maintenance;
2. Stable performance, high capacity;
3. Even final particles and high crushing ratio;
4. Adopt advanced manufacturing technique and high-end materials;

Technical Specs

telescope mirror grinding machine

Grinding Machine for Large Telescope Mirrors

2020-11-1  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

Telescope Mirror Grinding Machine Products &

The process was performed at Cranfield University Precision Engineering on the BoX grinding machine (Figure 4, left), designed for rapid and accurate grinding of large telescope mirror segments [14]. Fast figuring of large optics by reactive atom plasma

Astro-Tel Mirror grinding machine

2001-4-12  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-o-Matic mirror making machine ATM pages

2018-5-16  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

Types of mirror grinding machines ATM, Optics and

2018-11-16  Uğur İkizler is a telescope maker in Bursa, and has made telescopes and a machine. I'm sure either of these telescope makers would help you to learn about making optics. There are others in Turkey also. Usually the same machine is used for grinding, polishing, and figuring. Types of machines: astrosurf...es-type-eng.htm

Mirror grinding Telescope making

2007-2-13  If you want to make a mirror that you will turn into your primary, visual use telescope, 1200 mm focal length would be recommended. That would make a 150 mm F8,or a 200 mm F6 mirror. First phase : rough grinding (or hogging out)

Parabolizing a Telescope Mirror BBAstroDesigns

2021-2-3  Zambuto’s process using a Mirror-O-Matic machine comes close to generating a properly parabolized mirror simply by following the steps outlined in his spreadsheet. Texereau states that his “group has parabolized a number of mirrors ‘automatically,’ in effect, by using a team of four or five operators all applying the ‘same’ stroke.”

Telescope mirror grinding machine / pottery wheel

2021-3-4  No more walking around the barrel. Could be adapted with an overarm for a fully automated grinding machine. $125 shipped to CONUSA. Includes 3D printed mirror holder (mirror blank not included as seen in picture). It has variable speed from 0-300rpm. 10” metal wheel.

Mirror Grinding Machine, G. W. Ritchey National Air

2021-1-11  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 telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope initially intended for the Yerkes Observatory.

Telescope Mirror Grinding Machine Plans

telescope mirror grinding machine plans Grinding Mill China The Gulin product line, consisting of more than 30 machines, sets the standard for our industry. We plan to help you meet your needs with our equipment, with our distribution and product support system, and the continual introduction and updating of products. get price

Ritchey Mirror Grinding Machine National Air and

2020-9-4  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 telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope initially intended for the Yerkes Observatory.

100-inch telescope mirror on grinding machine —

100-inch telescope mirror on grinding machine at Mount Wilson Observatory's Pasadena laboratory.Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.

Astro-Tel Mirror grinding machine

2001-4-12  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-o-Matic mirror making machine ATM pages

2018-5-16  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.

Mirror grinding Telescope making

2007-2-13  A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. Most ATM books and websites recommend a Pyrex® mirror blank, but in my opinion, annealed plate glass is better for this first, "learn and practice" mirror.It is cheaper, it is softer and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical (visible at

mirror-maker Waite Research Telescope Mirrors

2010-4-29  Fine Grinding a 20" Quartz Telescope Mirror. 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 astro product of 2015. The 20" Renegade telescope offers fabulous viewing without climbing a ladder.

Stellafane ATM Main Page

Grinding a Mirror "For it is true that astronomy, from a popular standpoint, is handicapped by the inability of the average workman to own an expensive astronomical telescope. It is also true that if an amateur starts out to build a telescope just for fun he will find, before his labors are over, that he has become seriously interested in the

Parabolizing a Telescope Mirror BBAstroDesigns

2021-2-3  Zambuto’s process using a Mirror-O-Matic machine comes close to generating a properly parabolized mirror simply by following the steps outlined in his spreadsheet. Texereau states that his “group has parabolized a number of mirrors ‘automatically,’ in effect, by using a team of four or five operators all applying the ‘same’ stroke.”

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

Mirror Grinding Machine, G. W. Ritchey National Air

2021-1-11  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 telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope initially intended for the Yerkes Observatory.

Telescope Mirror Grinding Machine Plans

telescope mirror grinding machine plans Grinding Mill China The Gulin product line, consisting of more than 30 machines, sets the standard for our industry. We plan to help you meet your needs with our equipment, with our distribution and product support system, and the continual introduction and updating of products. get price

Mirror Grinding Machine Hackaday

2006-9-26  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.

Astro-Tel Mirror grinding machine

2001-4-12  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

GrindingPolishingMachine LCAO

Telescope Making. Telescope Mirror Grinding and Polishing Machine. After I had made the 41-cm telescope mirror by hand I had decided that I needed a grinding and polishing machine for the bigger mirrors I wanted to make. Specification. The machine must fullfill the following needs: It must be as compact as possible.

- WOS Wenk Observatory Solutions

2020-7-24  making a 14" parabolic mirror. A way to achieve this, is hiding the mirror behind so called zone masks that only have apertures for specific and well defined concentric zones. It is then possible to determine the Radius of Curvature (ROC) of the actually 'open' zone. Working through all zones defined, we get a sample of different ROCs that define the actual geometry of the mirror-surface.

GRINDING A TELESCOPE REFLECTOR WITH TOOL

Grinding telescope reflectors of 15-inch diameter and over makes it necessary to employ a motor-driven turntable. Small mirrors are generally ground and polished by rotating the tool, fastened to the turntable, and working the mirror blank by hand either in straight or in circular strokes over the tool. In this case the overhang of the mirror

Mirror-o-matic

2020-2-23  Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 MB Contact Dennis. The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 MB Contact Dennis

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

Telescope Making Supplies willbell

2020-7-29  Throughout the grinding and final lapping stages, the objective has been to reduce pits and scratches to the smallest possible size. However, no amount of grinding can produce a surface smooth enough or sufficiently transparent to meet the needs of a first-class telescope objective. Different techniques are needed.

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