Mold clampinghydraulic systemThe device utilizes pressure oil as clamping power. Compared with pneumatic clamping devices, hydraulic clamping devices have the following advantages: high working pressure, large transmission force, direct clamping method, small structural size, incompressible oil, high clamping rigidity, stable operation, reliable and low noise.

Selection of hydraulic cylinder for mold clamping hydraulic system: In any hydraulic clamping system, the selection of cylinder is the most important link. Choose the appropriate cylinder according to the shape, size, and processing requirements of the work. Various types of cylinders can meet the requirements of different actions. Oil cylinders are usually expressed in several terms: model, stroke, and rated force. 1. The positioning and thrust cylinder safely guides or pushes the workpiece into the predetermined position. 2. The clamping cylinder includes a rotating clamping cylinder, an edge clamping cylinder, and a clamping cylinder that presses the work onto a workbench or fixture frame. 3. Tension cylinders, some of which are hydraulic retraction and some are spring retraction function cylinders, are used in special situations where tension and clamping are required. 4. The workpiece support cylinder maintains the workpiece in a predetermined plane during the machining process.

It is worth noting that in the application of clamping a specific workpiece, the rotating clamping cylinder and the auxiliary support cylinder are usually used in combination, and the rotating clamping cylinder usually loads and unloads the workpiece according to the needs of workpiece constraint; Auxiliary support is usually used to support key parts of the workpiece, prevent or minimize deviations caused by bending or shaking of the workpiece during the machining process, ensure workpiece positioning, and improve and ensure high-level machining quality and repeated machining accuracy.

The force and stroke of the oil cylinder: The shape, size, and predetermined processing technology of the workpiece determine the force and stroke of the oil cylinder, as well as the specifications of the auxiliary support cylinder. In addition, the space for processing and operation should also be considered. In the design process of the fixture, several key characteristics of the rotating clamping cylinder and auxiliary support cylinder should be fully considered, and support is very critical. Usually, the support system needs to overcome both clamping and cutting forces, including the force generated by workpiece vibration.

Generally speaking, the force applied to the workpiece support due to clamping should not exceed 50% of the working capacity of the hydraulic cylinder under hydraulic working pressure. In most applications, a safety factor of 2:1 is sufficient to meet the workpiece clamping and absorb the vibration caused by cutting. When cutting products with large vibration or intermittent cutting, this factor can be increased to 4:1

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