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Grinding and Finishing - me.iitb.ac.in

A machine vise (made from ferromagnetic steel or cast iron) placed on the magnetic chuck can be used to hold non-ferromagnetic workpieces if only a magnetic chuck is available. Factors to consider in surface grinding are the material of the grinding wheel and the material of the piece being worked on.

Handbook of Machining with Grinding Wheels

• The grinding wheel rotates at 3600 rpm, has a diameter (D) of 150 mm, thickness (b) of 25 mm, and (c) 5 grains per mm2. The motor has a power of 2 ... super-precision machine-tool (The equipment cost is ~ 20 crores besides the expensive operational cost) 1 . ME 338: Manufacturing Processes II

Jan van Gastel: Making a mirror-o-matic mirror making machine

We named this book Handbook of Machining with Grinding Wheels because the borders between grinding and other operations such as superfinishing, lapping, polishing, and flat honing are no longer distinct. ... professor of machine tools and manufacturing technology at the Institute for Machine Tools and Factory Management of ... 3.3.11 Mirror ...

Mirror grinding - scope making

to be employed. Flexibility in speed control allows the instrument to be used as a grinding machine, high quality lapping machine, or polishing machine. During grinding high speeds are required, whereas lapping and polishing applications are generally completed at low speeds. The Model 920 also incorporates workstations, which allow for the use of

Making a Mirror grinding & Polishing machine - ATM, Optics ...

flow, either by manual grinding using shaped grinding tools, or by electro-grinding. (b) The internal surface of the cylinders of a car engine are turned on a lathe. The surface is then made smooth by grinding, followed by honing and lapping to get an extremely good, mirror-like finish. (c) Sand-paper is used to smooth a rough cut piece of wood. 2.

tut44 Making A Mirror Grinding Tool - asterism.org

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

Grinding and Polishing - ASM International

grinding mirror machine pdf. Get quote information. Would like to know the latest product quotes. Please tell us the details of the details, we will give you a most favorable offer information. How mirror is made material, manufacture, making, history, used .

GRINDING MACHINES - irem sen

Mirror grinding machine construction log I started thinking about building my own mirror grinding machine several years ago. Having been on the ATM list now since almost the beginning of it here on the web, I had lots of of inspiration reading of others projects and viewing their webpages

Surface grinding - Wikipedia

Dec 16, 2014· Gordon started with a 2" thick telescope mirror that weighed about 70 pounds. By thinning the blank, he's lightened the mirror by about 20 pounds! This video explains how he ground off the excess ...

mirror grinding machines. - ATM, Optics and DIY Forum ...

Grinding Mirror Machine Pdf - spf . Sales Inquiry Grinding Mirror Machine Pdf. Mirror grinding, Hacker News. Mirror grinding (scopemaking) 195 they've switched to machines in that last step to make it faster >if you took a typical 1 meter mirror and scaled it up

My Zeiss grinding and polishing machine - YouTube

It's also arguably the most accurate surface made by man or machine. If the mirror is expanded to the size of a football field, then the mirror's surface will be smooth to 1/1000 inch or 1/30 millimeter! Our experience begins with the varied sensations of touch and sound during grinding and carries through to the cerebral challenge of ...

Lecture 8. Metal Cutting - IELM

TYPES OF GRINDING MACHINES From the simplest grinding machine to the most complex, grinding machines can be classified as utility grinding machines, cylindrical grinding machines. and surface grinding machines. The average machinist will be concerned mostly with floor-mounted and bench-mounted utility grinding machines, bufting machines. and ...

Mirror Grinding Machine

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.

HENRY DRAPER - National Academy of Sciences

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.

THE VISION OF PRECISION Optical Grinders - amadamt.com

Dec 06, 2009· The movie shows the Zeiss machine in all its phases, putting together notes, drawings and films that make up the story: from initial idea to the project, manufacturing of machine parts to the ...

GRINDING MACHINES - irem sen

Printer friendly version of this tutorial (*.pdf) There are many reasons for grinding your own mirror. Either you want a unusual size, or focal length, or to satisfy your curiosity, or to have the "pride of achievement" by fabricating something as precise as a telescope mirror. ... You might purchase a mirror grinding kit, and have everything ...

Grinding a 25-Inch F3 Telescope Mirror: Thinning and ...

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.

Document sans nom - Astrosurf - Astronomie

Mar 16, 2015· Page 1 of 5 - Making a Mirror grinding & Polishing machine - posted in ATM, Optics and DIY Forum: Hello, 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 table & eccentric spins at 50 RPM fixed. I wont go for making mirror bigger that 10.5 (or max 12).

Joy of Mirror Making: Introduction - bbastrodesigns.com

Oct 03, 2006· 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. For instance, my turntable rotates at just one RPM and the stroke eccentric turns at 36 RPM.

4.1 Introduction 4.2 Types of grinding machines 4.2.1 ...

Jeff Baldwin's 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 The tool is hanging over the mirror by 1/6 the diameter of the tool, or about 1/8 diameter of the mirror…