| 摘要 |
Rolling the linear strip of single and laminated (multilayer) plates to produce a spiral shell, constituting part or whole wall of a cylinder and tubular element, is a procedure performed by using the forms and moulds. The stringers (beams) of round or curved stairs and their handrails are examples of spiral shells and elements constituting part of cylinder wall. Pipes with spiral joints are the example of spiral shell constituting whole wall of a cylinder and tubular element. This patent provides the design of a spiral roller machine and its relevant calculations to adjust the machine, and the procedure to roll spiral shells and elements according to the required shape.
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