Quality appraisal of hydraulic bending machine

hydraulic bending machine is a metal sheet processing equipment driven by a hydraulic system. It is a high-tech product that organically combines mechanical, electrical, and hydraulic technologies. It mainly consists of the fuselage, hydraulic system, control system and workbench. The working principle of
hydraulic bending machine relies on the pressure of hydraulic oil to control the working status of the machine. Usually, hydraulic bending machines use a hydraulic system to control the work of the cylinder. When working, place the metal sheet on the workbench, and then move the robot arm to clamp the workpiece. Then, the hydraulic system is started, and the pressure of the hydraulic oil causes the piston of the lower plate cylinder to move downward to achieve the bending process of the metal sheet.
In the case of hydraulic bending machine quality appraisal, Zhongke Testing can provide hydraulic bending machine quality appraisal services.

hydraulic bending machine can be divided into torsion axis synchronous hydraulic bending machine, machine-hydraulic synchronous hydraulic bending machine and electro-hydraulic synchronous hydraulic bending machine according to the synchronization mode.
hydraulic bending machine can be divided into upward-moving hydraulic bending machine and downward-moving hydraulic bending machine according to the movement mode.

GB 28243-2012 Hydraulic sheet metal bending machine Safety technical requirements
GB/T 14349-2011 Sheet metal bending machine Precision
GB/T 34376-2017 CNC sheet metal bending machine Technical conditions
GB/T 33644-2017 CNC sheet metal bending machine Accuracy
GB/T 24388-2009 Bending machinery Noise limit
GB/T 41264-2022 Sheet metal bending robot Safety requirements

Company A purchased a hydraulic bending machine from Company B for workpiece processing. After the contract was signed, Company A was dissatisfied with Company B's delay in delivery, and later discovered that the installation and debugging of the equipment did not meet quality requirements. The two parties could not reach an agreement, so Company A filed a lawsuit with the local court on the grounds that the purpose of the contract could not be realized, requesting the termination of the purchase and sale contract.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" with the hydraulic bending machine involved in the case.
appraisal analysis results: The
appraisal analysis expert group discussed the relevant information and on-site investigation of the PVC materials involved in the case and conducted a comprehensive quality and technical analysis, and made the following suggestions and conclusions:
1. When the efficiency is lower than a certain value, the nominal force of the bending machine involved in the case cannot meet the technical agreement; 2. The motor power of the bending machine involved does not match the pump pressure; 3. The main pump pressure configuration is too small; 4. The rigidity of the fuselage is insufficient, and the throat deformation is large under working conditions; the deflection deviation of the sliders on both sides will cause the angle difference between the two sides of the sheet to be bent out of tolerance; the assembly rigidity of the hydraulic cylinder is insufficient. The above problems lead to deviations in the shape, position and size of the folding plate, affecting the molding quality of the workpiece.