This kind of quick clamp is designed according to the mechanical principle of the double rocker mechanism in the plane four-bar mechanism, and its basic structure is composed of four components, such as connecting rod, frame and two connecting frame rods.
When the two hinge points of connecting rod and connecting rod and one hinge point of connecting rod and frame are in the same straight line, the mechanism is in the dead point position. At this time, no matter how much reaction force (except destructive reaction force) is exerted on the compacted workpiece, the indenter can not be loosened, which is the dead point clamping principle in mechanical mechanics.
In order to avoid the influence of external force load change and mechanical vibration in use, the middle hinged joint shall be slightly inclined to the inner side of the other two hinged joint wires during design, so as to ensure that the clamp mechanism is always locked in a stable state without loosening under the condition of maximum central tightening force.
Central nervous system
The central tightening force refers to the maximum pressing force of the ram on the workpiece when the fixture is in the locked position without mechanical deformation. This pressing force is generated when the ram is raised to the nearest position from the mounting base on the force arm.
The pressure of the indenter to the workpiece is not constant, it changes with the different position of the indenter on the force arm. When it is far away from the mounting base, the clamping force decreases.
Characteristic
Simple structure and installation.
The clamped workpiece can be loaded and unloaded quickly and operated conveniently.
All parts are electroplated and antirust, and the surface is clean and beautiful.
The key parts of the fixture for heavy load have been heat treated to have high strength and wear resistance.
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