Backhand tool holder: Anti-interference in deep hole machining

Release date:

2025-12-03

The pullback toolholder solves the problems of loosening and precision issues in traditional toolholders with its mechanical anti-loosening structure and ultra-precision manufacturing, making it particularly suitable for deep cavity machining and high-speed precision milling.

Backhand tool holder: Anti-interference in deep hole machining

The pullback toolholder secures the tool through a linkage structure of a pullback collet and a pullback screw: one end of the collet is designed with an outwardly flared bevel; when the pull rod is pulled back, the collet is drawn into the tapered hole of the toolholder, and the pressure from the bevel causes the collet to contract and clamp the tool. A rectangular protrusion on the side of the collet engages with a concave slide inside the toolholder to restrict the collet's rotation; a positioning bolt further passes through the positioning hole of the collet, providing double fixation to prevent loosening caused by machining vibrations.

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BLOGS

Focusing on domestic substitution of smart tool holders, Guochang Machinery targets the future market.

On May 29, in the conference room of Dezhou Guochang Machinery Co., Ltd., the LED display clearly showcased the working principles and technical application diagram of the "Intelligent Tool Holder Based on Rotational Force Measurement for Cutting Monitoring and Adaptive Machining." A specialized meeting was being held here to discuss the launch of the "Inductive Smart Tool Holder" product.

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Many machining center operators often get confused when changing tool holders. Seeing BT, BBT and HSK look somewhat similar, some try fitting them into the spindle casually. Let’s clarify interchangeability to avoid pitfalls and spindle damage.

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