Fixed mold movable roller variable cross-section roller bending forming machine and shaping device and method using same

Abstract

The invention discloses a fixed mold movable roller variable cross-section roller bending forming machine and a shaping device and method using the same. The forming machine comprises an upper mold, a lower mold, a forming roller set, a mold opening and closing mechanism, a forming roller set movement mechanism and a base. The lower mold is fixed to the base. The upper mold is connected with the mold opening and closing mechanism. The upper mold is movably arranged in the Z direction. The upper mold and the lower mold are of the same length which is not smaller than two times that of a forming unit needed by a part to be formed. The forming roller set is arranged on the two sides of the upper mold and the lower mold in a bilaterally-symmetric mode. The forming roller set is composed of a plurality of passes of forming roller pairs. The forming angles of the forming roller pairs are gradually increased from the first pass to the last pass. The gaps between the rollers of the same pass can be adjusted, and the problem of roller bending forming of a part with the variable cross section in deep and narrow shape can be effectively solved; the complex degree of the device is lowered, and the device has the advantages of being easy to maintain, economical, durable and the like; the variable cross-section roller bending forming product quality is greatly improved.

Description

technical field [0001] The invention relates to the technical field of roll forming technology, in particular to a roll forming machine with fixed die and movable roll with variable cross-section, forming equipment and a forming method using the same. Background technique [0002] In recent years, variable cross-section roll forming technology has become a hot research topic in the field of roll forming. Several prototypes of variable cross-section roll forming production lines have been developed at home and abroad. However, the existing variable cross-section roll forming technology has certain restrictions on the cross-sectional shape and web width of the part, and its forming process determines that there are various inherent defects in the forming process of the part, and these inherent defects are in the forming process. The process cannot be effectively eliminated, and the forming accuracy of the parts cannot be guaranteed. Especially for deep and narrow variable cro...

AI Technical Summary

Problems solved by technology

However, the existing variable cross-section roll forming technology has certain restrictions on the cross-sectional shape and web width of the part, and its forming process determines that there are various inherent defects in the forming process of the part, and these inherent defects are in the forming process. cannot be effectively eliminated during the process, and the forming accuracy of the parts cannot be guaranteed

Especially for deep and narrow variable cross-section parts, due to the limitation of the roll placement space, there are great difficulties in forming such parts. In many cases, the existing variable cross-section roll forming process cannot even be formed.

Moreover, due to the difference in the springback angle between the variable cross-section area and the constant cross-section area of ​​the part, the control of the forming accuracy of the part becomes very complicated, and there is no effective technical way to solve it.

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