06. 13, 2023
The wedge structure is a common form of hydraulic power chuck, which converts the axial movement of the chuck piston into the radial movement of the jaws through the wedge groove mechanism (the most common type of hydraulic chuck).
The chuck of this structure firstly converts the axial movement of the chuck piston into the movement of three sliders in the sliding groove through the wedge groove mechanism, and the tops of the three sliders have helical teeth and claws The top teeth form a beveled meshing relationship, and the movement of the slider drives the claws to move and clamp the workpiece. The clamping force is small, the clamping precision is low, and the mechanism wear is small; because the slider is inside the chuck chute The direction of movement is actually perpendicular to the centrifugal force of the jaws. The clamping force of the chuck is greatly affected by the centrifugal force, and the chuck has very high speed performance.
The piston drives the wedge block through the wedge mechanism and drives the jaws again through the straight lever. The structure of the claw is of high quality, the centrifugal force of the wedge block compensates the centrifugal force of the jaw, reduces the loss of the clamping force, and is beneficial to increase the rotation speed, and the fulcrum of the lever is designed as a spherical support, thereby withstanding lower and lower pressure!
The chuck is usually used to clamp the thick and long shaft, relying on the axial movement of the jacket, through the tapered surface, the diameter of the jacket is locked tightly.
