Single-point longitudinal vibration controllable progressive forming system for metal plate

Abstract

The invention discloses a single-point longitudinal vibration controllable progressive forming system for a metal plate. The main shaft of the single-point longitudinal vibration controllable progressive forming system for the metal plate is installed on a rack; a force sensor is installed on the shaft end of the main shaft; a vibration signal generator is connected with a vibration exciter; the vibration exciter is installed below the force sensor; a tool head is connected with the vibration exciter via a connecting rod; a workbench is installed just below the main shaft; the input end of a parameter controller is connected with the force sensor; and the output end of the parameter controller is respectively connected with the vibration frequency and amplitude control port of the vibration exciter as well as the X-shaft driving motor control port and the Y-shaft driving motor control port of the workbench. A single-point longitudinal vibration plasticity forming condition of the plate material is established by combining a forming technology parameter, a vibration mode parameter and a forming force parameter, and the parameter controller is used for monitoring and regulating the forming technology parameter and the vibration mode parameter in real time according to the plate material forming technology state and the vibration plasticity forming condition. The single-point longitudinal vibration controllable progressive forming system for the metal plate, which is disclosed by the invention, has the beneficial effects that the technical defects of single-point progressive forming can be overcome, the technology parameter and the vibration mode parameter can be monitored and regulated in real time according to the plate material vibration plasticity forming condition in the forming process, and efficient and precise progressive forming of the metal plate material can be realized.

Description

technical field [0001] The invention relates to a single-point longitudinal vibration controllable progressive forming system for metal plates. Background technique [0002] Sheet metal forming is widely used in the manufacture of aviation, ship and automobile panels. However, the traditional sheet metal forming process mostly requires the use of molds, which has the problems of long cycle, high cost and low flexibility, and it is difficult to adapt to small batches. Variety and sample trial production needs. In order to solve the above problems, sheet metal single-point incremental forming technology has attracted widespread attention from researchers at home and abroad because of its advantages of being able to quickly manufacture required forming parts directly from CAD data without using traditional forming equipment and molds. [0003] The single-point progressive forming of metal sheet is to use the idea of ​​layered manufacturing to replace the surface of the mold wi...

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Problems solved by technology

[0007] (3) Due to the small contact area between the tool head and the plate, the contact pressure of the plate is highly concentrated in the small area near the tool head contact point, the deformation is too localized, and indentation is easy to form, and the plate will be damaged due to excessive accumulation of impact and work hardening. sunken

Therefore, the final shape of the incrementally formed workpiece is the result of the cumulative effect of its entire forming and local springback history, so that the shape and size of the formed workpiece will not reach the required accuracy, and the forming accuracy has also become a constraint for the promotion of the incremental forming process. The key issue

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