Cutting Tool Clamping Assembly for Coolant Flow and Insert Clearance
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Solution Overview
Problem
Conventional cutting tool assemblies for grooving face challenges in maintaining sufficient distance for inserting a cutting insert due to increased rigidity and reduced elastic deformation when the elastic connecting portion thickness is increased for forming a coolant channel, leading to shortened lifespan and deteriorated workpiece quality.
Innovation Solution
A cutting tool assembly design that includes a tool body, lower and upper jaws, an elastic connecting portion, and a clamping screw, with specific width and thickness ratios configured to ensure adequate elastic force and coolant channel formation, allowing for easy insert insertion and improved coolant flow, thereby enhancing insert lifespan and workpiece quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the elastic connecting portion is increased to form a coolant channel with sufficient inner diameter, then the rigidity of the elastic connecting portion increases and coolant flow is improved, but the amount of elastic deformation decreases making it difficult to ensure sufficient distance between the upper jaw and lower jaw for inserting a cutting insert
Solution Approach 1:
The patent transitions from increasing thickness (one dimension) to increasing width (another dimension) to achieve the same goal of providing sufficient elastic force. By making the clamping portion wider rather than thicker, the patent maintains adequate elastic deformation while providing structural support for the coolant channel.
Solution Approach 2:
The patent changes the critical parameter from thickness to width ratio. Specifically, the width of the clamping portion is set to 40%-80% of the width of the tool body, which provides sufficient elastic force without compromising the elastic deformation needed for insert insertion.
2Quantity of substance
If the thickness of the elastic connecting portion is increased to allow high-pressure coolant to flow smoothly, then coolant flow capability is improved, but the length of the clamping portion must be increased which shortens the lifespan of the cutting insert and deteriorates workpiece quality
Solution Approach 1:
The patent resolves this contradiction by shifting from increasing thickness to increasing width of the clamping portion. This dimensional change allows the coolant channel to be formed with adequate flow capability while maintaining a shorter clamping portion length, thereby preserving insert lifespan and workpiece quality.
Solution Approach 2:
The patent optimizes the width ratio parameter (40%-80% of tool body width) to achieve the right balance between coolant flow capability and clamping portion length, avoiding the need to increase length and thereby protecting insert lifespan.
3Force
If the width of the clamping portion is increased to provide sufficient elastic force, then elastic deformation is improved, but the rigidity increases reducing the distance between upper jaw and lower jaw
Solution Approach 1:
The patent identifies and optimizes the width ratio parameter (40%-80% of tool body width) as the critical factor. This parameter optimization provides sufficient elastic force while maintaining adequate distance for insert insertion, resolving the contradiction between force and length.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design provides sufficient elastic force and coolant flow, improving cutting performance and extending the lifespan of the cutting insert while maintaining workpiece quality by optimizing the width and thickness ratios of the clamping portion, elastic connecting portion, and upper jaw.
Implementation Method 1
an elastic connecting portion elastically connecting the tool body and the clamping portion to each other
Data Source
AI summary
A cutting tool assembly includes: a tool body extending in a longitudinal direction; a lower jaw extending and protruding forward from the tool body; a clamping portion disposed to be spaced apart from a top surface of the tool body; an upper jaw extending forward from the clamping portion and facing the lower jaw; an elastic connecting portion elastically connecting the tool body and the clamping portion to each other on a rear side of the clamping portion; a clamping screw penetrating the clamping portion downwardly and fastened to the tool body; and an upper coolant channel through which coolant flows, the upper coolant channel penetrating the elastic connection part, the clamping portion, and the upper jaw. In a width direction perpendicular to the longitudinal direction, a width of the clamping portion is in a range of 40% to 80% of a width of the tool body.