A Van de Graaff generator can produce extremely high potential differences (voltages). A small school version can pump a huge charge onto the top dome so that the potential difference between the dome and the earth can be 200 000 volts yet the total charge is so tiny that you only receive a small shock when you touch it. This makes possible dramatic demonstration …
A unique manual milling method is available for generating geometrically true spherical surfaces. This technique can be used to machine convex and concave spherical surfaces. Other than the milling machine, the only tools needed are a boring head and a rotary table. If you have a CNC lathe or mill, this is really just an academic exercise.
Machining concave sphere surfaces.Workpiece is clamped in a dividing head's chuck and rotated by hand.Tool is clamped in an arbor that allows it to be regula...
Vicmarc, Nova, Jet, Robust, Woodfast, Laguna, Oneway, Delta, Powermatic and Stubby with center heights between 125mm-300mm. Sphere sizes range from 10mm-280mm in diameter depending on your lathe size. The Sphere Jig's are made to order with 3 size ranges which serve a range of lathe center heights.
A common problem on the lathe is turning convex and concave surfaces. A particular case of this is turning a ball. But, usually, it is not a complete ball that is required but a ball on the end of a shaft. Among the possible methods are: - …
A common problem on the lathe is turning convex and concave surfaces. A particular case of this is turning a ball. But, usually, it is not a complete ball that is required but a ball on the end of a shaft. Among the possible methods are: - using one or more form tools. - making a round surfaces by a series of straight cuts.
I am currently taking an intro course to mill and lathe work, so please bear with me if this is a stupid question. I have an idea for a project that I would like to make, and part of this project will involve turning spheres on the lathe with a radius ball turner and then drilling holes into these spheres at specific locations.
SPHERES – Bronze Sculptural Lighting Art. The Spheres are unique bronze sculptures by world famous artist and sculptor Marie Khouri.. Marie wishing to expand the uses of her pieces, teamed up with Maurice Laurent Dery of Karice to create a …
Machining convex asymmetric sphere surfaces.Workpiece is clamped in a dividing head's chuck and rotated by hand.Tool is clamped in an arbor that allows it to...
Workpiece is clamped in a dividing head's chuck and rotated by hand.Tool is clamped in an arbor that allows it to be regulated radially.For details see:http:...
tools, hand turning, milling with an angled rotary table, and lastly two methods with ball turning attachments on the lathe. I chose to make an at-tachment as illustrated in Photo 1. and this was from a plan in MEW Is-sue 26 December 1994. It is a good tool, well designed and gave me great satisfaction both to make and use.
A round concave cutting edge will cut a convex surface. On a small lathe, the power and rigidity of the lathe will limit the length of the cut even if the depth of cut is relatively short. 2328 ball turning. fig using a form tool made from a piece of HSS. Very often the …
Part 1: Making Sparks. Touch the small sphere (connected to the ground wire) to the dome. Turn the knob counter clockwise. Turn the generator on. Slowly turn the knob clockwise so the motor turns the belt. Take the small sphere away and let a charge accumulate on the dome. Ask a student to turn off the lights to make it easier to see the sparks.
The Perfect Sphere™ Tool is a sphere and concave turning system adaptable to most lathes on the market. The heavy duty construction and flexible configuration allow you to turn spheres from 1 inch to 14 inches in diameter on most lathes from 10" to 25".
Large Aluminum Spheres Production Method Water Pressured. The Large aluminum spheres is made of A6061 aluminum alloy which has good weldability and good mechanical for assembling.we use our exclusive water pressure …
Hi there. I'm in the process of fabricating a thingamajig and want to cut some bolt slots (as opposed to simple drilled holes) in ~1/4" mild steel plate so that the piece is adjustable. Something like ~1" long by 3/8" wide. I don't have a mill, which I suspect would be …
You can make a table of values easily in a spreadsheet program. The table of values is how CNC got started. You don't state desired accuracy, or if the shape is through. If it is a through shape, finish it with a file. If its not a through shape, think about making it one by overlaying the part with the arc on the base material.
This mill is going to come in really handy for lots of future projects. I hope this page gives helpful ideas to anyone in need of a ball mill. They are quick, easy, and cheap to build yourself. I need to add a disclaimer here for anyone thinking of using this sort of ball mill for milling gunpowder or other flammable or explosive powders.
Peck milling. Opening a slot. When milling a hole, linear ramping (2 axes simultaneously) is always preferred to peck milling. Peck milling is an alternative hole milling method, but it often produces long chips and generates undesirable cutting forces on the cutter. Opening a hole or a …
Page 1 of 2 - Making a mold for spherical ball mill media - posted in Member Tutorials: I had alot of scrap lead lying around (leftovers from "scrap metal age" )so I decided to cast my own spherical media for the ball mill. It turned out very good and I would like to share my method with the rest of the community. Also I can't remember having encountered a thread …
What is claimed is: 1. A method of making ceramic spheres, wherein the method comprises the steps of: preparing a cylinder-shaped core; disposing the cylinder-shaped core on a pair of rotating bodies arranged horizontally; rotating the rotating bodies; descending a core drill and bringing the core drill into contact with said core; and machining a sphere out of the core …
Introduction: My need for a ball turning tool began with the desire to build a Quorn Tool and Cutter Grinder. The Grinder requires 18 ball handles that could be bought, but then it would not be quite the same. Thus the quest to build a Spherical Turning Tool. *** May02 Note: This turned out to be to big for the Quorn small ball handles.
This operation simply mills a surface flat, typically with a Face Mill or perhaps a Fly Cutter. There are variations in how the full surface is covered: Spiral In/Out; Zig Zag back and forth; Climb Mill Only; What can be really key when Face Milling is how the cut is entered, especially for tough materials like Stainless Steel or Titanium.
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