A Stretch Bending Method for Complex Profiles with Displacement Probe Induction
A technology of displacement probe and stretch bending, which is applied in the direction of manufacturing tools, metal processing, metal processing equipment, etc., to achieve the effects of reducing wrinkling, reducing springback, and improving thinning
Inactive Publication Date: 2017-02-15
CENT SOUTH UNIV
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Problems solved by technology
[0003] In order to overcome the above-mentioned shortcomings, the object of the present invention is to provide a displacement probe induction stretch bending forming method capable of forming complex cross-section profile bending parts, to solve the problem of quality defects generated in the profile bending process in the prior art, shorten the production cycle, and improve Productivity
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[0025] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.
[0026] figure 1 Shown is a three-dimensional schematic diagram of the conventionally designed profile stretch bending process. According to the bending radius, bending angle and cross-sectional shape of the processed profile, the corresponding movable die-punch and guard plate are made, and the two ends of the processed profile are clamped to the In the fixture, and then apply a relatively large pre-tensioning force to it, and then start to move the fixture or the movable die-punch, when the profile touches the punch, a forming moment is generated and acts on the middle part of the profile, and the profile Divided into two sections of forming area, as the fixture or movable die-punch continues to move, the forming torque becomes larger and larger, and the deformation of the profile becomes larger and larger, and the movement stops when th...
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The invention relates to the technical field of profile bending, in particular to a complex profile induction stretch bending device with displacement probes. The device solves the quality problem in a profile bending technology at present. According to the bending radius, the bending angle and the section shape of a profile, a corresponding moving die-punch and a protection plate are manufactured; the position of the moving die-punch and the position of the protection plate are adjusted; two ends of the profile are clamped in clamps, and prestretching force slightly higher than the yield strength of a profile material is exerted to the profile; the clamp is moved so as to enable the movable die-punch to exert forming torque to the profile; according to the induction probes on the molded surface of the protection plate, displacement between the side surface of the profile and the molded surface of the protection plate in the profile bending process is output in real time, and according to the displacement changing situation, whether the side surface wrinkles or not in the profile bending process is judged; and stretching and bending are repeatedly carried out multiple times to enable the profile to be bent by a needed angle. According to the device, the profile with the complex section shape can be formed, and a bending part is good in forming quality, small in resilience, short in production period and high in efficiency, and the number of wrinkles on the side surface of the profile is small.
Description
technical field [0001] The invention relates to a stretch-bending forming method for complex profiles with displacement probe induction. Background technique [0002] Bending processing of profiles occupies a very important position in industrial sectors such as metal structures, engineering machinery, vehicles and aerospace. In particular, the use of complex profile bending parts can reduce product costs and meet the demand for lightweight products. It has broad application prospects in the fields of automobiles and aerospace industries. At present, conventional bending processes are mainly divided into two categories in terms of forming principles. One is formed by the shape of the workpiece mold, such as stretch bending, winding, pressing, etc.; the other is kinematic forming, that is, formed by the relative motion between the workpiece mold and the workpiece, such as roll bending, flexible pad bending, free bending , laser bending, etc. Among them, the quality defects...
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IPC IPC(8): B21D11/00B21C51/00
CPCB21C51/00B21D11/00
Inventor 唐华平姜永正唐海红邓赛帮彭旋
Owner CENT SOUTH UNIV