Cut-Off Tool Holder

A Cut-Off Tool Holder is a specialized tool holder designed to securely hold a thin, blade-like cutting tool used for parting off or cutting through a rotating workpiece, typically on a lathe. ¹ Its primary function is to provide rigid support to the slender cut-off blade, preventing vibration and ensuring a clean, accurate separation of the material. The design of the holder is critical due to the high forces exerted on the narrow blade during the cut-off operation.

These tool holders often feature a clamping mechanism that grips the blade along a significant portion of its length to maximize stability. Some designs incorporate features like a dovetail or tongue-and-groove interface for enhanced rigidity. Additionally, many cut-off tool holders are designed to facilitate efficient chip evacuation and coolant delivery directly to the cutting edge, which are crucial for preventing chip buildup and dissipating heat, ultimately improving tool life and the quality of the cut.

Choosing the right cut-off tool holder depends on factors such as the size and material of the workpiece, the width of the desired cut, and the capabilities of the machine tool. A well-designed and properly used cut-off tool holder is essential for achieving clean, burr-free cut-offs and maximizing productivity in machining operations. It helps to minimize tool breakage and ensures a smooth and efficient parting process.