Cutting Tool Body Coolant Flow Path for Chip Removal and Rigidity
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Solution Overview
Problem
Existing cutting tools face challenges in providing a flow path at the leading end with sufficient cross-sectional area while maintaining rigidity, particularly in hole machining where coolant supply and chip removal are difficult due to limited space.
Innovation Solution
A cutting tool body design with a flow path configuration that maintains distances from the insert mounting seat, screw hole, and periphery to ensure a maximized cross-sectional area, featuring triangular and fan-like shapes to enhance coolant discharge and chip removal capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a flow path is provided at the leading end of the body with sufficient cross-sectional area, then coolant discharge capability is improved, but rigidity of the body deteriorates due to limited space in the narrow zone surrounded by insert mounting seat, fastening portion, and periphery
Solution Approach 1:
The flow path is configured to extend in the axial direction of the body rather than solely in the radial direction, utilizing the third dimension (axial length) to achieve sufficient cross-sectional area for coolant discharge while maintaining structural integrity in the limited radial space
2Area of stationary object
If the flow path is positioned close to the insert mounting seat and fastening portion to maximize space utilization, then cross-sectional area is increased, but structural stability deteriorates
Solution Approach 1:
The flow path is positioned at optimized distances from the insert mounting seat, fastening portion, and periphery, creating local clearances that balance space utilization for adequate cross-sectional area while preserving structural stability through maintained distances from critical structural elements
Data Source
AI summary
A body of a cutting tool has: an insert pocket in which a cutting insert is mounted; a screw hole into which an insert mounting screw for fastening the cutting insert to the insert pocket is screw-inserted; and a chip removal coolant flow path for allowing coolant C to be discharged through a discharge port that is open at a leading end of the body, wherein at least a part of the chip removal coolant flow path is at respective distances Da, Db and Dc from the insert pocket, from the screw hole, and from the periphery of the body, in a cross-section perpendicular to the axial direction of the body, wherein each of the distances Da, Db and Dc is equal to or greater than a predetermined size.