Sheet metal bending system and method based on clamping controlling and staged bending

Abstract

The invention relates to a sheet metal bending system and method based on clamping controlling and staged bending. The sheet metal bending system comprises a driving motor, a clamping fixing seat and a host which are installed on a rack, the driving motor is provided with a bending shaft, and a work piece is arranged on the clamping fixing seat; the sheet metal bending system further comprises an ultrasonic wave thickness detector, an ultrasonic wave crack detector, pressure sensors, a roller and a controller which is connected with the host; the ultrasonic wave thickness detector, the ultrasonic wave crack detector and the pressure sensors are connected with the host through a DSP data processing module. According to the sheet metal bending system and method, through the combination of staged type bending and feedback controlling, the crack number is greatly decreased, and the machining quality is improved; the roller is arranged to perform extrusion friction on the inner concave face of the work piece, protrusive burrs and cracks are effectively removed, the subsequent machining process is omitted, and the machining cycle is shortened; the camping pressure is controlled by the pressure sensors, and therefore sheet metal deformation or disengagement is avoided, and the machining reliability is improved.

Description

technical field [0001] The invention relates to the technical field of sheet metal processing, in particular to a sheet metal bending device. Background technique [0002] Currently used sheet metal bending machine, commonly used two types of organic pillow hydraulic, mechanical bending machine is to use the motor through a series of gear transmission and eccentric wheel to realize the up and down movement of the working joint. The hydraulic bending machine is realized by using a hydraulic cylinder and a complete set of oil circuit control components. These bending machines play an important role in the mass production of large enterprises, but due to their high price and complex structure, their popularization is limited. With the development of the commodity economy, there are more and more stamping parts for small commodities for daily use. Small enterprises and even self-employed households urgently need sheet metal bending machines with low price and simple structure. ...

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Problems solved by technology

[0003] At present, some small bending machines have appeared on the market, which can realize simple bending processing of plates, but they have the following disadvantages: the bending torque is set by the experience of workers during work, and cannot be adjusted in real time with the thickness of the plate, and a constant The bending force cannot change with the change of the bending angle. The processing quality of the sheet is not high, and there are cracks in the sheet after bending; the sheet after bending can only be detected by naked eyes, which is not accurate and the effect is not good; Afterwards, due to cracks and burrs on the concave surface of the sheet material, further processing is required, resulting in a long processing cycle; the workpiece to be processed is manually adjusted and clamped, and the clamping force is often too large or too small, resulting in loosening of the processed part during bending Or the deformation of the clamping part is too large

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