mirror grinding diamond curve generating machine

mirror grinding diamond curve generating machine youtube 21/09/2008· the diamond curve generating machine in this video is grinding a 16' mirror blank. the purpose of this machine is to generate a curve into the mirror using homemade grinding tools, a diamond saw

mirror-o-matic mirror making machine atm pages of generating the curve on a mirror blank is a tedious process when done manually or a messy (and dangerous) affair when done with machines. after reading an article by ed jones about using diamond pellets for that task, i wanted to try the idea on the grinding machine.

curve generating medium size lenses or mirrors youtube 2/02/2013· this is how i generate curves using a lapping machine and diamond tools.

telescope making 2 youtube 4/06/2009· the glass casting oven is a oven made from scratch where it is able to make up to a 20' mirror blank. diamond curve generating machine/mirror grinding & polishing- own personal design/invention

strasbaugh 7n curve generator youtube 18/05/2011· curve generating medium size lenses or mirrors duration: 7 mirror grinding diamond curve generating machine duration: 4:14. xfrogsharkx 18,920 views. 4:14. coburn 2113 lens generator

newport glass works, ltd. grinding, polishing and figuring this is why you don't want to make mirrors to be worked on machines too thin. for 16" to 18" mirrors, 1.62" thick is the thinness i would recommend. there are several ways to support the mirror on a grinding and polishing machine turntable, but first make sure the turntable itself is rigid. it must not bend. if your machine lacks a sturdy

mirror grinding machine plan mirror grinding machine. 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.

joy of mirror making: rough grinding bbastrodesigns the joy of mirror making mel bartels 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. the curve is created by slumping the blank in a

jeffbaldwin the ring ought to be roughly 1/3 to ½ the diameter of the mirror, and grinding center over center strokes with it using large grits, such as 60 grit, will curve generate a mirror. you will have to cast a tool for it when finished. below is a photo of using a barbell weight on our mirror making machine to curve a 32” f/3.67 mirror to an f/3.1

diamondgrind2.avi youtube 25/04/2010· a fast way to generate the curve for a telescope mirror using a concave diamond saw. this saw already cut three 16" mirrors, a new one can spend about 15 minutes.

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joy of mirror making: introduction grinding a 6 inch [15cm] mirror to f/2.8 using a ring tool. mirror making zen. do one thing at a time. mirror making is a process: 1. get blank, grit, pitch 2. roughly grind a curve in the mirror face 3. refine the curve with diminishing grit sizes 4. polish the mirror face 5. parabolize the mirror face 6. send off to aluminizing.

jeffbaldwin 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, and is fixed in this position. the motor turns the mirror and the

new approach for pre-polish grinding with low subsurface new approach for pre-polish grinding with low subsurface damage james b. johnson, dae wook kim, robert e. parks, and james h. burge large optics fabrication and testing(loft) group, college of optical sciences, university of

mirror grinding machines flexopharma mirror grinding machine. 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.

joy of mirror making: polishing bbastrodesigns polishing a mirror is one of the great joys you will experience as a maker and builder. 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! polishing a 10.5 inch [27cm] f/2.7 plate glass

precision cylindrical face grinding of abrasive will generate a spherical surface on the work-piece with a radius equal to rg/sin a. 3. experimental validation of the face profile two grinding experiments were set up on a uva cylin-drical grinding machine using a vitreous bond, 150 ansi fig. 1. set-up of the cylindrical face grinding. fig. 2. the top and front views of xyz and

how i make light-weight hexagon or honeycomb telescope i have high hopes for this mirror. it was built with the new hexagon molding technique and new edge grinding machine. i am calling it my second generation hexagone back blank. this one has far fewer air bubbles in it than the first prototype did. i had forgotten how much hard work rough grinding is. gotta build a curve generating machine next.

astro-tel cast iron tools the two tools were then run together on the mirror grinding machine using different grades of carborundurn until there was an even marking on both. this ensures that the curves are spherical. now i read in one of the atm books, i can't remember where that when the tool is used on top then it should be 5/6 th. the mirror diameter. i made three

parabolizing a telescope mirror bbastrodesigns luckily the mirror needed but a bit more parabolizing which was largely added during the subsequent work session. the mirror began figuring with a radius of curvature of 131.8 inches [3348cm], so the total shrinkage was 0.5 inches [13mm]. the bartels' rule of smoothness first, always. no matter what goes on, strive for a smooth curve on the

joy of mirror making: polishing bbastrodesigns polishing a mirror is one of the great joys you will experience as a maker and builder. 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! polishing a 10.5 inch [27cm] f/2.7 plate glass

parabolizing a telescope mirror bbastrodesigns luckily the mirror needed but a bit more parabolizing which was largely added during the subsequent work session. the mirror began figuring with a radius of curvature of 131.8 inches [3348cm], so the total shrinkage was 0.5 inches [13mm]. the bartels' rule of smoothness first, always. no matter what goes on, strive for a smooth curve on the

precision cylindrical face grinding of abrasive will generate a spherical surface on the work-piece with a radius equal to rg/sin a. 3. experimental validation of the face profile two grinding experiments were set up on a uva cylin-drical grinding machine using a vitreous bond, 150 ansi fig. 1. set-up of the cylindrical face grinding. fig. 2. the top and front views of xyz and

intersurface dynamics inc. generating/grinding the front side of each lens is then marked for orientation, and protected with tape. the taped side is attached to a block of wax or soft metal alloy, and the lens is inserted into a lens generator or grinding machine. a special diamond wheel and grinding coolant is used for grinding curved, complex surfaces. the generator grinds the

spherical lens generator, lens curve optics machine diamond tool. consumable. optical glass. optical instrument. vacuume coating machine. news. faq. feedback. contact us . products category • precision optics machine. sawing & rolling. generating & centering. grinding & polishing. lapping & polishing • electronic material machine. slicing & rounding. grinding & polishing. double grinding & polishing • ophthalmic machine. rx lab machine

fast mirror grinding and polishing the atm's workshop 15/11/2001· all told, the hogging process was completed using only three pounds of #60 sic grit. much of the grit reduction was due to use of the diamond hones for grinding more than half of the 0.340 inch sagitta. i think next time i attempt something involving this much glass removal, i will take the time to built a curve generator. for an intermediate

dressing technique for truing up diamond grinding wheels the grinding wheel does not cut as freely, thereby producing more heat in the grind zone. more important, the profile of the grinding wheel wears so that the geometry and precision of the workpiece suffers. haas uses a silicon carbide or corundum wheel as the dressing tool for its tapered diamond grinding wheels.

grinding (abrasive cutting) wikipedia grinding is an abrasive machining process that uses a grinding wheel as the cutting tool.. a wide variety of machines are used for grinding: hand-cranked knife-sharpening stones (grindstones)handheld power tools such as angle grinders and die grinders; various kinds of expensive industrial machine tools called grinding machines; bench grinders

optics production weo corporation optical instruments slicing machines for generation of grooves. diamond curve generating / lapping machines for spherical curve generating and final machining; pitch and pad polishing machines to refine the surface of the optics and setting the surface quality of the finished optics, capable of

ductile or partial ductile mode machining of brittle materials ductile or partial ductile mode machining of brittle materials z. w. zhong school of mpe, nanyang technological university, singapore this paper reports ductile or partial ductile mode machining of silicon, glass and some advanced ceramics. results are presented using scanning electron micrographs of the machined surfaces. grinding and lapping operations using inexpensive machine tools could