Adjustable Cutting Tool Insert Angle Mechanism
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Solution Overview
Problem
Existing adjustable cutting tools for metal cutting and threading operations often require exchangeable anvils or shims for angle adjustment, which can be cumbersome, and separate shank and insert holder components add complexity.
Innovation Solution
A cutting tool design featuring a cutting insert, a tool holder with a rigidly fixed insert holder portion, and a non-threadingly retained adjustment member that allows for the adjustment of the cutting insert's angle by actuating the adjustment member without removing components, using a fastener to secure the insert at the desired angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If exchangeable anvils or shims are used for angle adjustment, then the cutting insert angle can be adjusted to match the helix angle, but the adjustment process becomes cumbersome and time-consuming
Solution Approach 1:
The patent implements a dynamic adjustment mechanism where the anvil is made movable relative to the holder body through a threaded adjustment member. This allows the cutting insert angle to be dynamically changed by rotating the adjustment member, which moves the anvil along the threaded bore, eliminating the need for exchangeable shims and making the adjustment process simple and quick.
2Ease of manufacture
If separate shank and insert holder components are used, then the tool structure can be modular, but the overall device complexity increases
Solution Approach 1:
The patent merges the shank and insert holder components into a single integrated holder body. The adjustment member is threaded directly into the holder body, and the anvil is positioned relative to this integrated structure. This consolidation eliminates the need for separate shank and holder components, reducing assembly complexity while maintaining modular manufacturability of the overall tool.
3Measurement precision
If a threaded adjustment mechanism is used, then precise angle control is achieved, but the adjustment member requires thread engagement which complicates the structure
Solution Approach 1:
The patent replaces a complex multi-component threaded adjustment mechanism with a simplified design where a single adjustment member is threaded directly into the holder body. The anvil is positioned by the axial movement of this adjustment member along the threaded bore, providing precise angle control through simple rotational adjustment without requiring additional threading components or complex engagement mechanisms.
Data Source
AI summary
A cutting tool has a cutting insert, a tool holder, and an adjustment member. The tool holder includes an insert holder portion and a shank portion, the insert holder portion being rigidly fixed to the shank portion. The cutting insert is removably secured to the insert holder portion by a fastener, at a cutting position in which the operative cutting portion encounters a workpiece at an insert cutting angle. The adjustment member is a non-threadingly retained on the insert holder portion, and operatively connected to the cutting insert. Actuation of the adjustment member causes an increase or decrease of the insert cutting angle.