Composite elastic cushion for multi-point formation

Abstract

The invention relates to a composite elastic pad for multi-point forming, which belongs to the field of mechanical engineering. The composite elastic pad for multi-point forming is mainly composed of a steel pad and a polyurethane backing plate. The steel pad is a layer of multiple steel pads corresponding to the basic unit of the multi-point forming device. These The upper and lower sides of the steel pad are respectively provided with integral polyurethane backing plates. The cross-sectional shape of the steel pad is circular, square, octagonal, hexagonal or triangular; the steel pad can be connected in various ways. The concentrated load applied by the basic body unit of the multi-point forming device is dispersed by the steel pad, which produces uniform compressive stress on the plate and suppresses the generation of wrinkles and indentations; makes the force more uniform during the forming process of the plate, the forming quality is better, and the precision is higher. .

Description

Technical field: [0001] The invention relates to a composite elastic pad for multi-point forming, which is used for multi-point forming and multi-point stretching forming of three-dimensional curved surface parts, and belongs to the field of mechanical engineering. Background technique: [0002] Multi-point forming is a new technology of flexible and digital plate forming. It forms the mold surface through multiple regularly arranged and height-adjustable basic units, and can form curved parts of different shapes with a set of equipment. [0003] The forming surface of the multi-point mold is a discrete curved surface composed of basic volume units. If the basic volume units are in direct contact with the plate, severe local deformation will occur at the part in contact with the plate, forming uneven indentation defects, and it is also easy to produce Wrinkles seriously affect the forming quality. In order to suppress the occurrence of indentation, polyurethane backing plat...

AI Technical Summary

Problems solved by technology

If the thickness of the polyurethane backing plate is small, it is difficult to completely eliminate the concentrated load generated by the basic unit; if the thickness of the polyurethane backing plate is large, it will affect the accuracy of the forming surface

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