Cutting Insert Coolant Passage for Small-Diameter Grooving
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Solution Overview
Problem
Conventional indexable cutting tools face challenges in ensuring effective coolant reach during machining of small diameters or narrow groove widths, leading to inadequate cooling and lubrication at the machining point.
Innovation Solution
An indexable cutting tool design featuring a cutting insert with a recessed part and an opening part on the insert mounting seat, forming a coolant discharge passage that directs coolant closer to the cutting edge, enhancing cooling and lubrication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coolant supply structures are used, then the structure is simple, but the coolant cannot sufficiently reach the machining point in small diameter or narrow groove width machining
Solution Approach 1:
The recessed part is formed within the cutting insert body, creating a nested structure where the coolant flow passage is embedded inside the insert. This allows the coolant to be delivered through the insert itself to reach the cutting edge directly, solving the reachability issue without adding external complex structures.
Solution Approach 2:
The recessed part acts as an intermediary structure that receives coolant from the coolant supply source and redirects it toward the cutting edge. This intermediary channel enables coolant to reach difficult-to-access machining points by mediating between the supply source and the cutting zone.
2Temperature
If coolant is supplied from a distance from the cutting edge, then the structure is simpler, but cooling and lubrication efficiency is insufficient
Solution Approach 1:
The recessed part is strategically positioned and shaped to concentrate coolant flow precisely at the cutting edge location. This local concentration of coolant delivery maximizes cooling and lubrication efficiency at the critical cutting zone rather than distributing coolant broadly.
Solution Approach 2:
The recessed part creates a three-dimensional coolant delivery path that allows coolant to reach the cutting edge from multiple directions and angles, improving coverage and efficiency of cooling and lubrication at the cutting zone.
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
This design ensures more efficient coolant delivery to the machining point, extending tool operational life and improving surface quality, especially in difficult-to-reach areas like small diameter inner diameter grooving.
Implementation Method 1
a recessed part that forms a flow passage in which at least part of the coolant discharged from the opening part flows
Data Source
AI summary
To achieve more efficient cooling and lubrication by making a coolant more reliably and directly reach a machining point even in machining such as inner diameter grooving of a small diameter or grooving of a narrow groove width with which it is difficult for a coolant to reach a machining point.An indexable cutting tool that adopts a structure in which a cutting insert including cutting edges is removably mounted, by a set screw, on an insert mounting seat at an axial direction leading end part of a tool body includes: a coolant flow passage for coolant supply, the coolant flow passage being provided to the tool body; an opening part that is provided to the insert mounting seat; and a recessed part that forms a flow passage in which at least part of the coolant discharged from the opening part flows, the recessed part being provided to the cutting insert.