The working principle of NC hydraulic press is summarized

1. CNC hydraulic press is a kind of machine and equipment that uses hydraulic transmission system to carry out working pressure production and processing. It can be used for all kinds of casting and filling molding production and processing. For example, the casting of stainless steel plates, the forming of metal structural parts, the inhibition of plastic products and rubber and plastic products, etc. Hydraulic press is one of the mechanical equipment that began to use hydraulic transmission system. At this stage, hydraulic transmission system has become the key transmission system mode of working pressure processing equipment. In the heavy machinery and equipment processing and manufacturing industry, aerospace industry, plastic and metal production and processing, hydraulic press has become a key machine and equipment.

2. The hydraulic transmission system software of NC hydraulic press is dominated by working pressure conversion. The system software has high working pressure, large total flow and large output power. Therefore, attention should be paid to improve the utilization rate of output power of the transmission device and avoid impact and vibration during pressure relief to ensure reliability.

3. According to the regulations of the suppression processing technology, the master cylinder of the NC hydraulic press can carry out the basic working circulating system of rapid sliding, speed reduction, suppression, pressure holding delay, pressure relief, round-trip and termination (arbitrary position), and the working pressure, speed and pressure holding time shall be adjusted. The key of the injection hydraulic system is to inject the product workpiece, and specify the posture that can complete the injection, return and termination. For example, when the metal sheet is stretched, the auxiliary positions such as raising, termination and working pressure return of the injection hydraulic system are specified. Sometimes, it is necessary to clamp the blank with the edging cylinder to avoid wrinkling nearby.

4. CNC hydraulic press takes the large working pressure (load capacity) that is likely to be output by the key actuator (master cylinder) in the main movement as the key specification and model of hydraulic press, and has been generalized. The loading capacity of the jacking cylinder is often 20% - 50% of the loading capacity of the master cylinder. The injection cylinder of the continuous extruder can be up and down 10% of the key load. The cargo capacity of the edging cylinder of the double acting lashing hydraulic press is generally up and down 60% of the cargo capacity of the lashing cylinder.

5. The speed of the master cylinder shall be determined according to the production process of the working pressure. Generally, in the hydraulic transmission system of the oil immediately provided by the pump, the stroke arrangement speed shall not exceed 50mm / s, the quick release rate shall not exceed 300mm / s, and the quick return speed and quick release rate of the hydraulic press shall be the same.