Spinning

The slab and the mandrel rotate together, and the roller is fed and pressure is applied to make the slab close to the core mold to form a point-by-point local deformation stamping process. Spinning can manufacture a variety of axisymmetric rotating body parts, such as speakers, bullets, high pressure container heads, copper cymbals; can also be used for cylinder closing, blank forming, etc.
The slab and the mandrel rotate together, and the roller is fed and pressure is applied to make the slab close to the core mold to form a point-by-point local deformation stamping process.

Spinning can manufacture a variety of axisymmetric rotating body parts, such as speakers, bullets, high pressure container heads, copper cymbals; can also be used for cylinder closing, blank forming, etc. The characteristics of the spinning are: a large workpiece can be formed with a small deformation force; the use of the device is relatively simple, and the small and medium-sized thin plate member can be spun by a common lathe; the mold is simple, only one core mold is required, and the material requirement is low.

Spinning is suitable for small batch production, because it can only process rotating parts, which has greater limitations and low productivity. Spinning can be performed by special machinery, using profile spinning and digital control spinning. The process of thinning the plate thickness while spinning forming is called thinning spinning, also called strong spinning, which is mostly used for processing cones, thin-walled tubular parts, etc., and can also be used to spin large diameter deep. The tube is cut into a flat plate.

Spinning is to fix the flat plate or hollow blank on the mold of the spinning machine. While rotating the spindle of the random bed, press the blank with a rotating wheel or a rod to make local plastic deformation. Under the action of the feeding motion of the rotary wheel and the rotary motion of the blank, the local plastic deformation is gradually extended to the entire surface of the blank, and is closely attached to the mold to complete the spinning process of the part.

The advantage of spinning is that the equipment and the mold are relatively simple (can be replaced by a lathe without a special spinning machine), in addition to the shape of a rotating body such as a cylindrical shape, a cone shape, a paraboloid formation or other various curves. Machining a rotating body part of a fairly complex shape. The disadvantage is low productivity and high labor intensity, which is more suitable for trial production and small batch production.

With the production needs of aircraft, rockets and missiles, on the basis of ordinary spinning, thinning and spinning (also called strong spinning) has been developed.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

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