metalspinning_producitonprocess

The oldest spinning systems consisted of a lathe with a spinning roller that, using leverage, was manually pressed against the workpiece to shape it, usually against a mandrel. Skilled craftspeople have spun metal like this since antiquity and have perfected the technique through the ages. People still spin manually.

On the other hand CNC spinning machines reduce the need for skilled labor. A disk blank or preform is clamped against a chuck by the machine tailstock and rotated by the drive motor. The roller, on a two-axis compound slide, is programmed to make a series of sweeping motions to form the metal progressively onto the mandrel, behind the chuck. Specialty spinning machines with multiple roll tools also are available for forming wheels and similar parts.

Therefore, I would say that metal spinning regarding craftsmanship is most definitely analogue and for mass production it is both.

-flat metal disk (aluminium, brass metal, copper metal, steel metal, stainless steel metal)

-metal spinning lathe (head stock, spindle, mandrel, clamp, tailstock, tool-rest, spinning pin)

-wax/lubricant

-tools

-Add patterns/errors in the mould you will spin the metal against
-Make own tools
-Only go over the metal once, see what will happen to the shape
-Combine wood turning and metal spinning
-See what kind of metals you could use instead of metal to spin
-Use tools with patterns in it
-Play with the shape of the mandrel, how detailed can it get
-What happens if you have a foam mandrel
-Tube with high water pressure flowing out as a tool
-Make a not symmetrical mandrel
-Don't choose the 'right' tools regarding the shape/metal you are using
-Carve metal after forming the shape
-Adding liquid material after forming the shape, but still on the lathe
-look up how you fail
-stacking material; example - different metal disk together

SOURCES

https://www.youtube.com/watch?v=dLr7FTDUpX8
https://www.youtube.com/watch?v=um-biLfru-c
https://www.slideshare.net/abhigerrard/metal-spinning-process
https://www.youtube.com/watch?v=YRkV8ta-ypE
https://www.youtube.com/watch?v=TEyeOr-Iaac
https://www.youtube.com/watch?v=bCtc5X0xaDE
https://www.youtube.com/watch?v=rqNRRqAjk6g&t=308s
https://www.youtube.com/watch?v=5FgXTi2ikvA
https://nl.pinterest.com/pin/28710516353616674/
https://en.wikipedia.org/wiki/Metal_spinning
tool
https://www.youtube.com/watch?v=SWEK6VvwIvI
http://www.admet.co.uk/Suitable%20Materials.html
https://www.semanticscholar.org/paper/Analysis-of-the-Effect-of-Process-Parameters-on-in-Šugár-Šugárová/abdd79d9d3876e6380825fd0962d6929e6a07fa0/figure/2
https://lindenevans.wordpress.com/experiments/
http://www.rocheindustry.com/metal-spinning/
http://thing.cs.usm.maine.edu/~jmc/tools/metalsites/spinning/SPIN.HTM
https://www.youtube.com/watch?v=RFXa_uS1Zk0

Spun chair- Thomas Heatherwick

Metal spinning set up

Another essential aspect of this metal forming method is choosing the right metal spinning tools. If you are planning to go for the manual metal spinning method, then you should aim at choosing the right tools for the job.

The primary tool for metal spinning is always referred to as a spoon. There are many other improvised tools that can still be used for the job.

Most metal spinning tools are made from hardened steel though there are some that are made from solid brass.

In almost all situations, metal spinning tools are designed to spin on the bearing. This is done with the aim of improving the surface finish of the metal while at the same time increasing the durability of the tool.

As the spinning tool rotates, the heat and friction that are generated during the process tend to be greatly minimized.

In recent years, CNC machines are replacing most tools for spinning due to their high levels of accuracy and efficiency. The rollers that are used in the CNC machines come in different diameters. It all depends on the application of the metal to be spun.

Cutting tools also form part of the CNC tools. They are essential since some metals may have to be cut after they have been spun. A significant percentage of the cutting tools for metal spinning is made of carbide.