Multi-Flow Cutting Tool Layout for Coolant and Chip Discharge
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Solution Overview
Problem
Cutting tools used for inner diameter machining face challenges in efficiently discharging chips and cooling the cutting edge due to limited freedom in the position and direction of coolant hole outflow ports, leading to suboptimal coolant distribution and chip removal.
Innovation Solution
The cutting tool design incorporates a main body with multiple flow paths and strategically positioned outflow ports, including a first outflow port located further away from the imaginary plane containing the central axis and cutting edge, and a second outflow port positioned closer, allowing for efficient coolant distribution and chip discharge without collision, enhancing cooling and chip removal efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single coolant hole with one outflow port is used in conventional cutting tools, then the structure is simple, but coolant distribution and chip discharge efficiency are insufficient due to limited freedom in position and direction
Solution Approach 1:
The single coolant hole is segmented into multiple flow paths (first flow path and second flow path) with separate outflow ports. This segmentation allows independent optimization of coolant delivery to different areas, improving overall coolant distribution efficiency while managing complexity through modular design
Solution Approach 2:
The outflow ports are positioned at different locations and orientations in three-dimensional space, with the first outflow port having a normal vector at a different angle than the second outflow port. This spatial arrangement in multiple dimensions enables simultaneous optimization of coolant delivery angles and chip discharge paths without increasing structural complexity linearly
2Temperature
If outflow ports are positioned close to the cutting edge for efficient cooling, then cooling effectiveness improves, but chip discharge becomes difficult due to limited space
Solution Approach 1:
The cooling function and chip discharge function are segmented into separate flow paths and outflow ports. The first flow path with its outflow port optimizes for cooling the cutting edge, while the second flow path with its outflow port optimizes for chip discharge, allowing each function to be independently optimized without compromise
Solution Approach 2:
Different regions of the tool are provided with different flow path configurations tailored to local requirements. The first outflow port is positioned and oriented for optimal cutting edge cooling, while the second outflow port is positioned for optimal chip discharge, giving each local region the quality it needs
3Productivity
If multiple flow paths with different orientations are used, then coolant distribution and chip discharge efficiency improve, but the manufacturing complexity increases
Solution Approach 1:
The complex flow distribution is segmented into two distinct flow paths with different orientations and outflow ports. This segmentation allows each path to be manufactured using optimized processes for its specific geometry, potentially simplifying the overall manufacturing compared to creating a single complex integrated path
Solution Approach 2:
The multiple flow paths serve multiple functions simultaneously - cooling the cutting edge, discharging chips, and potentially reaching different areas of the workpiece. This multi-functionality consolidates what would otherwise require separate systems into a single integrated tool structure, improving manufacturability
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 enables effective coolant distribution and chip discharge, improving the cutting process by preventing coolant collisions and ensuring efficient cooling of the cutting edge, thereby enhancing machining performance.
Implementation Method 1
a first flow path located along a central axis and including an inflow port, a second flow path located from the first flow path toward the first end along the central axis
Implementation Method 2
a third flow path connecting to the first flow path and including a first outflow port, a fourth flow path connecting to the second flow path and including a second outflow port
Data Source
AI summary
A cutting tool may include a main body having a bar shape extended along a central axis. The main body may include a cutting edge, a first flow path, a second flow path, a third flow and a fourth flow path. The first flow path is located along the central axis and may include an inflow port. The second flow path is located along the central axis and may include a smaller inner diameter than the first flow path. The third flow path may connect to the first flow path and may include a first outflow port. The fourth flow path may connect to the second flow path and may include a second outflow port. The first outflow port is located more away from an imaginary plane including the central axis and the cutting edge than the second outflow port.