Several commonly used tooling fixtures

Shenjia Hydraulic


Published time:

2025-06-24

Three-jaw chuck applications: mainly used for clamping workpieces with regular shapes such as circles and equilateral triangles, such as cylindrical parts and disc-shaped parts.

Several commonly used tooling fixtures

Chuck Type

Three-Jaw Chuck

Structural Principle: Composed of three jaws, a chuck body, bevel gears, etc. When the chuck wrench is rotated, the bevel gear drives the plane thread to rotate, causing the three jaws to move towards or away from the center simultaneously, achieving clamping and releasing of the workpiece.

Application Scope: Mainly used for clamping workpieces with regular shapes such as circles and equilateral triangles, such as cylindrical parts and disc-shaped parts.

Four-Jaw Chuck

Structural Principle: It has four independent jaws, each of which can be moved radially independently through the chuck wrench to achieve clamping and positioning of the workpiece.

Application Scope: Suitable for clamping workpieces with irregular shapes such as squares, rectangles, and ellipses, as well as eccentric circular workpieces.

Features: The positions of the four jaws can be adjusted separately to clamp workpieces of different shapes and sizes. The clamping force is large, but alignment is required during clamping, and the clamping speed is slow. It is often used for turning processing of workpieces with complex shapes or eccentricity.

Parallel Jaw Vise Type

Ordinary Parallel Jaw Vise

Structural Principle: Mainly composed of a fixed jaw, a movable jaw, a screw rod, a nut, etc. By rotating the screw rod, the movable jaw moves relative to the fixed jaw to achieve clamping and releasing of the workpiece.

Application Scope: Often used on milling machines, drilling machines, etc., to clamp small square and rectangular workpieces, such as small plate-like parts and block-like parts.

Features: Simple structure, easy operation, strong versatility, but the clamping force and accuracy are relatively limited, suitable for single-piece or small-batch production with low processing accuracy requirements.