Bending processing system and method based on crack detection feedback and clamping control

Abstract

The invention relates to a bending processing system and method based on crack detection feedback and clamping control. The bending processing system comprises a drive motor which is arranged on a rack, a clamping fixing base and a main engine, wherein a bending shaft is arranged on the drive motor; a processed workpiece is arranged on the clamping fixing base. The bending processing system further comprises a capacitive sensing thickness detector, pressure sensors, a proximity switch, a detection feedback device and a control, wherein a first pressure sensor and the proximity switch are arranged at the bent part of the processed workpiece; the detection feedback device comprises an ultrasonic crack detector which is arranged on the clamping fixing base; the capacitive sensing thickness detector, the pressure sensors, the proximity switch and the ultrasonic crack detector are separately connected to the main engine through a DSP (Digital signal Processor) module. According to the bending processing system and method disclosed by the invention, a second pressure sensor is used for controlling clamping force, and the proportion of cracks is greatly reduced through crack detection and multi-stage bending, so that the processing quality is improved; and excessive bending is avoided by controlling the bending angle, so that the use safety of the equipment 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 crack defects 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; The angle control device is prone to excessive bending, and there are also potential safety hazards; the workpiece is clamped by manual adjustment, and the clamping force is often too large or too small, resulting in loosening of the workpiece or excessive deformation of the clamping position during bending Big

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