Only sheet drawing machine itself high precision strength, to process qualified products, the size of the strength of the stamping work has a great influence, in the stamping of high precision workpieces and strong continuity of cold stamping production, must choose high precision and rigid sheet drawing machine, in order to meet the processing requirements, in order to successfully produce high precision parts.
Since the sheet stretching machine is a kind of hydraulic equipment with wide use and high efficiency, clean up the impurities on the workbench before starting the machine to prevent the sudden start of the slider caused by the impact switch and cause accidents, and anti-interference is one of the important tasks in the operation of the sheet stretching machine.
First of all, the distance between the disturbed circuit or device of the sheet stretching machine and the interference source can be increased. Since the interference intensity is inversely proportional to the square of the distance, increasing the distance between the interference source and the disturbed circuit as much as possible will greatly reduce the spread of interference and the failure rate of the hydraulic system. Especially in the harsh environment of power supply, stable power supply is adopted to suppress power supply noise and interference between power supply and ground cable, an isolation transformer can be connected between the power supply and the numerical control device.
In order to make the sheet stretching machine and components not affected by external electromagnetic fields, isolation shielding measures are usually adopted. Electrostatic shielding is used to eliminate the interference between circuits due to capacitance and capacitance. Low-frequency magnetic field shielding For constant magnetic field and low-frequency magnetic field, shielding can be realized by using ferromagnetic materials with high magnetic conductivity, limiting the magnetic lines of force in shielded conductors with small magnetic resistance, and using twisted pairs can also eliminate such interference; electromagnetic shielding withstands or excludes electromagnetism by means of reflection or absorption.
The thin plate stretching machine connects its shell with the earth for protective grounding. If the ground wire of the thin plate stretching machine system is connected with the earth for system grounding, anti-interference can also be achieved through protective grounding or system grounding. Filter can suppress the input interference and signal transmission line on the induction of a variety of interference, commonly used low-pass filter and DC filter, generally installed infour-column hydraulic pressBetween the power supply and the numerical control device.