Tool Holder Clamping with External Wedges for Compact Auto Change

The patent extracts and eliminates the complex hydraulic piston system from the clamping device. Instead, it uses a simple manually operated lever mechanism that directly actuates the clamping jaws through mechanical linkage, achieving automatic tool changing without requiring complex hydraulic control systems.

The patent replaces the hydraulic mechanical system with a purely mechanical lever-based actuation system. The lever provides mechanical advantage to move the clamping jaws, eliminating the need for hydraulic fluid, pumps, and control valves while maintaining automatic operation capability.

The clamping jaws are designed with a self-locking feature where the geometry of the jaws and the workpiece interface creates a self-holding mechanism. Once clamped, the system maintains the clamped position through its own structural design without requiring additional locking means such as separate locking pins or secondary locking mechanisms.

The clamping jaws incorporate curved or angled surfaces that, when closed on the workpiece, create a self-locking geometric configuration. The curvature or angle of the jaw surfaces prevents accidental opening and maintains the clamped position through mechanical interlocking rather than additional locking components.

The lever mechanism is designed to operate in a radial or angular dimension rather than requiring linear space. By utilizing rotational or angular movement of the lever around a pivot point, the device achieves compact linear dimensions while providing sufficient mechanical advantage for easy manual operation.

The lever mechanism provides dynamic mechanical advantage that changes during the clamping stroke. The lever geometry is optimized so that the operator applies force at a point that maximizes torque and clamping force generation, making operation easy despite the compact size of the overall device.