WHAT IS METAL SPINNING?
Metal spinning is a method of forming rotationally symmetrical sheet metal parts. In spinning, the sheet metal discs are formed into rotationally symmetrical hollow shapes. The blank is clamped between the shaped spinning mandrel and the tailstock of the spinning machine and rotated by the main drive. The metal disc and the mandrel rotate together and the spinning roller makes contact with the outer face of the workpiece. Using either a CNC or PNC controlled machine the part will take shape as the roller gradually forms the material through a series of programmed passes. If a product is being spun by one of our skilled hand spinners, the same process is used but the operative applies the metal spinning roller by hand.
This metal spinning technique can be applied to produce a wide variety of hollow parts of widely differing shapes, all without compromising the significant benefits of metal forming. Often other processes can be incorporated into the same cycle. Any tooling that is required is not necessarily dictated by the shape of the component.
All these features make spinning an economical and highly flexible process whether it is for high volume or small batch production.
Our expertise in the art of metal spinning allows us to take our customer requirements and develop from conception to completion allowing the company to operate successfully across a wide range of industry sectors and markets.
Having been a leading supplier of metal spun components to the major national and international companies in the lighting sector, Stockfield Metal Spinners has now successfully diversified to provide metal spinnings for companies operating in a diverse range of industry sectors.
Investment in PNC and CNC TECHNOLOGY has ensured that Stockfield has remained a market leader in the METAL SPINNING and associated technology market.
Stockfield Metal Spinner’s largest machine at present is the Leifeld PNC 110 which can take blank sizes up to a range of 1.2 metres and the spinning of some metals such as stainless steel of up to 10mm. The distance between centres is 1.500mm, the longitudinal slide stroke is 800mm and a transverse slide stroke of 400mm.
Our M&M CNC machine is capable of producing faceted reflectors.For full machine capabilities and materials used please click here. Our production is complimented by a number of quality, long time served hand spinners.
This combined with the capability to add press operations, anodising, polishing, painting or plating to the component means that Stockfield Metal Spinners can provide a “one stop shop” service for many of its customers.
CONTACT STOCKFIELD METAL SPINNERS ON 0121 440 1333
ADVANTAGES OF USING METAL SPINNING
Metal Spinning offers numerous advantages over other metal forming processes such as casting, forging or machining.
Customers who decide to use metal spinning as opposed to the other processes have achieved substantial cost savings, some of which are highlighted below:
Material yields are increased as other methods such as forgings and castings are usually produced with a thick cross sectional profile. In order to produce the final component extensive machining can be required which is expensive. Metal Spinning uses thinner plate material and the resulting spun product requires little or no machining to finish.
Material waste is kept to a minimum and secondary operations are often performed within the cycle time of the machine, producing significant savings for the customer.
Lower Tooling Costs
Metal spinning mandrels, or chucks, are simpler and less costly than the more conventional casting, dies or pattern-makers and are therefore more cost effective.
Converting to spinning can often make significant savings on the cost and introduction of the initial tooling investment.
Our in house tool maker gives us the advantage of short lead times on tooling plus any modifications or simple design changes can be done at little extra cost and without the need for new tooling.
Shorter lead times
Through the use of PNC and CNC lathes, standard sheet and plate materials, metal spinning can considerably reduce the lead time to market of both standard and complex parts, often outperforming the more lengthy process of either casting or forging.
Improved tensile strength
Through the pressures and forces being exerted on the material when it is being spun, the component becomes ‘work-hardened’ as it changes the material’s tensile properties. This in turn increases the life function of the component whilst providing a more light weight, reliable and robust product.
Wide range of spun metal part sizes
Stockfield Metal Spinners can offer a tremendous size range as we have the capability to spin metal parts that range from a few millimeters to 1.2 meters in diameter.
To benefit from the advantages of our metal spinning service, please contact us on 0121 440 1333.