摘要

Traditional forms of Hydraulic Clamping System is applied in the Automatic Machining System of machine tool in the past, however its defects are obviously such as relatively complex speed control circuit, large loss of pressure keeping and so on. Aiming at these defects in this paper puts forward a frequency control technology program on the Hydraulic Clamping System, analyzes the principle and application method and the design of the general speed control circuit, propose the calculating and choosing method of the motor speed for the pressure keeping progress. Practical application shows that the automatic clamping system with frequency control technology can simplify the circuit, make the speed control more convenient, and have positive affect on energy saving, noise reducing and cooling in the process of processing and holding pressure.