grinding mirror machine pdf

Stellafane ATM Main Page

Much is also unchanged - mirror grinding techniques are very similar to those written up by Porter and Ingalls in the 20´s and 30´s Many amateur astronomers still choose to fabricate their own instruments, for the pride of accomplishment, the gaining of knowledge and the insurance of quality

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MACHINING OPERATIONS AND MACHINE TOOLS

Machine tool called a milling machine ©2002 John Wiley & Sons, Inc M P Groover, “Fundamentals of Modern Manufacturing 2/e” Figure 213 -Two forms of milling:

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Joy of Mirror Making: Rough Grinding - BBAstroDesigns

Rough Grinding The first milestone is putting a curve into the mirror face The curve's depth dictates the mirror's focal length The curve should be spherical Creating the curve can be done by several methods: The curve is ground into the mirror face using a grinding tool The curve is pre-generated for you

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Fine grinding of silicon wafers - Kansas State University

International Journal of Machine Tools & Manufacture 41 (2001) 659–672 Fine grinding of silicon wafers ZJ Pei a,*, Alan Strasbaugh b a Department of Industrial and Manufacturing Systems, Kansas State University, Manhattan, KS 66506, USA b Strasbaugh, Inc, 825 Buckley Road, San Luis Obispo, CA 93401, USA Received 17 November 1999; accepted 5 October 2000

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Lens & Mirror Making Best lenses and mirrors are both made ,

Grinding Motion • Move mirror back and forth over tool & grinding compound • After number of strokes rotate mirror, tool in opposite direction • Change position of stroke alternatively • Eventually move fully around the mirror • Grit removes material from both • But tool edges wear down, while mirror ,

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mexico grinding mirror machine pdf

mexico grinding mirror machine pdf Ball Mill Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two, Read More; CS Cone Crusher Comparing with other kinds of crushers, CS Series spring cone crusher is quite excellent in hard material,

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NI Export2016 10-Technical-AB

the machine during grinding, and should not be modifi ed in any way Abrasives should not be used near infl ammable material or in an environment where there is a risk of explosion Sparks should be directed away from the face and body, if possible towards the fl oor Dust extraction

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Mirror Grinding - Diamond Curve Generating Machine - YouTube

hubachdeviantart/This is my father's garage where he is currently working on his telescope hobby The Diamond curve generating machine in this vi,

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The shaping and testing of two 20” optical telescope mirrors

Grinding and polishing machine • Based largely on the principles of a machine described by John Hindle in Amateur Telescope Making volume 3 – Chapter A 2 • Mirror free floating on top of the tool, inside a holding cradle (crocodile) allowing the mirror to rotate freely without undue pressure and so avoiding any astigmatism

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Basics of Grinding - Manufacturing

grinding machines perform the dressing task automatically The application of coolants to the grinding process is important Coolants reduce grinding machine power requirements, maintain work quality, stabilize part dimensions, and insure longer wheel life Coolants are either emulsions, synthetic lubricants or special grinding oils

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TECHNICAL SPECIFICATIONS FOR AUTOMATIC GRINDING ,

FOR AUTOMATIC GRINDING AND POLISHING MACHINE WITH AUTOMATIC POLISHING HEAD I Grinding and Polishing Machine 1 Type Table Top only 2 Disc Diameter 8-10” (200-300mm) Single Disc 3 Wheels Aluminium or Brass 4 Disc Speed / variability upto 400 rpm 5 Controls Front panel, Touch pad controls and LED display 6

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GRINDING MACHINES - irem sen

grinding machines, bufting machin and reciprocating surface grinding machin UTILITY GRINDING MACHINES The utility grinding machine is intended for offhand grinding where the workpiece is supported in the hand and brought to bear against the rotating grinding abrasive wheel The accuracy of this type of grinding machine depends on the ,

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mirror grinding machin - ATM, Optics and DIY Forum ,

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

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Mirror grinding machine - Thomas, Griscavage Frank

Mirror grinding machine United States Patent 2779137 Inventors: , Download PDF 2779137 US Patent References: 2404282: Apparatus for making piezoelectric crystals: 1946-07-16: 2398628: Polishing precision surfaces: 1946-04-16: 2246869: Grinding machine: 1941-06-24: 1972086: Metallographic polishing machine: 1934-09-04: 1639012: Surfacing ,

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Grinding and Polishing - ASM International

An automatic grinding and polishing machine is shown in Fig 41 Automatic grinding methodsteps are: 1 Symmetrically load three to six mounted specimens into the specimen holder of an automatic grinding-polishing machine, with the flat sur-face of the ceramic section downward Most manufacturers provide a

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Fabrication of large secondary mirrors for astronomical ,

The mirror hangs from this plate for testing, and vice versa for polishing The necessary upward force during polishing should be as uniform as practical, so as to support both the weight of the mirror and the lap forces, with minimal local deflection The cell used for this is a 36-point hydraulic whiffletree that engages only when the mirror ,

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MACHINING OPERATIONS AND MACHINE TOOLS

– A machine operation in which a work part is fed past a rotating cylindrical tool with multiple edg (milling machine) • Types – Peripheral milling • Slab, slotting, side and straddle milling • Up Milling (Conventional) & down milling (Climb) – Facing milling • Conventional face, Partial face, End, Profile, Pocket & contour ,

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Joy of Mirror Making: Rough Grinding

Rough Grinding The first milestone is putting a curve into the mirror face The curve's depth dictates the mirror's focal length The curve should be spherical Creating the curve can be done by several methods: The curve is ground into the mirror face using a grinding tool The curve is pre-generated for you

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Examples of Turing Machines

the machine goes to , writes, and moves to right The arrow labeled in means mo : ves to the right when reading a 0 without affecting the tape Note: This machines begins by writing a blank over the leftmost zero This allows it to find the left-end of the tape in stage 4 It also allows to identify the case when tape contains one zero only, in ,

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41 Introduction 42 Types of grinding machines 421 ,

421 Rough grinding machines The rough grinding machines are used to remove stock with no reference to the accuracy of results Excess metal present on the cast parts and welded joints are removed by rough grinders The main types of rough grinders are: 1 Hand grinding machine 2 Bench grinding machine 3 Floor stands grinding machine 4

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WINTER Diamond and cBN Tools for the Tools Industry

6 WINTER abrasives for the tools industry 2014/2015 Inserts Saws WINTER Facts Knives Mould and die Service Glossary Contact Shank tools PCD PCBN Milling cutters Table of contents Quick Reference Grinding Tool Guide

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grinding mirror machine pdf

Grinding Mirror Machine Pdf - crispyfrieu Grinding Mirror Machine Pdf Amateur telescope making - Wikipedia Amateur telescope making is the activity of building telescopes as a hobby, as opposed to being a paid professionalAmateur telescope makers (sometimes called ATMs) build their instruments for personal enjoyment of a technical challenge, as a way to obtain an inexpensive or personally ,

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Stellafane ATM: Rough Grinding

This page describes the rough grinding process Before You Start Use this checklist to make sure you are ready to start rough grinding: You have selected a mirror diameter and focal ratio, and have use these to calculate a target sagitta; You have a way to measure sagitta; You have an appropriate size mirror blank, you have selected a surface to grind, and you have beveled the edge

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Practical Roll Techniques - Grinding & Balancing

Sep 13, 2013· Consistent grinding and balancing of rolls is necessary for efficient operation and optimum paper quality As an integral part of a modern roll maintenance program, roll grinding and balancing uses machinery with accurate inspection and measurement equipment This paper provides practical tips on roll inspections, balancing, grinding and grooving

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COST BASIS OF GRINDING MACHINE VS MACHINING ,

Grinding machines and metal cutting machines are both used for the manufacture of finished products This project is focused on the functions of the parts used in the makeup of grinding machines and metal cutting machin The project was proposed as an investigation of the high price of grinding machin

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GRINDING A TELESCOPE REFLECTOR WITH TOOL-GRINDING ,

gear are all we need to construct this grinding machine The wooden platform on the turntable is faced true, to permit a well-centered reflecting surface to be obtained The main task of producing a perfect spherical concave surface should be solved by the use of a grinding tool swinging over the mirror ,

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Mirror grinding machine - Thomas, Griscavage Frank

Mirror grinding machine United States Patent 2779137 Inventors: , Download PDF 2779137 PDF help US Patent References: 2404282: Apparatus for making piezoelectric crystals: 1946-07-16: 2398628: Polishing precision surfaces: 1946-04-16: 2246869: Grinding machine: 1941-06-24: 1972086: Metallographic polishing machine: 1934-09-04: 1639012 ,

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Build your own telescope part 1: The mirror – Thomas ,

Rough grinding This step is about making one side of the glass concave It will give your mirror its overall focal ratio If you make the centre deep, you will end up with a fast telescope (eg F/D = 4) well suited for deep sky observations On the opposite, a shallow mirror (eg F/D = 8) will be performing very well on planets and the moon

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A high quality surface finish grinding process to produce ,

Aug 23, 2019· A high quality surface finish grinding process to produce total reflection mirror for x-ray fluorescence analysis Hitoshi Ohmori1, Shinjiro Umezu1,2, Yunji Kim1, Yoshihiro Uehara1, Hiroshi Kasuga1, Teruko Kato1, Nobuhide Itoh1,3, Syuhei Kurokawa4, Takayuki Kusumi5, Yugo Sugawara6 and Shinsuke Kunimura6 1Materials Fabrication Laboratory, RIKEN, Saitama 351-0198, Japan

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