Cutting Tool Fluid Channel Layout for Multi-Edge Coolant Delivery
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Solution Overview
Problem
Existing cutting tools face difficulties in supplying a sufficient amount of fluid to cutting edges due to limited internal space, leading to increased channel resistance when trying to increase the number of channels, which restricts fluid delivery.
Innovation Solution
A cutting tool design with a reduced number of first channels extending parallel to the rotational axis, supplemented by second channels that distribute fluid to multiple cutting edges, allowing for a larger inner diameter and reduced channel resistance, ensuring sufficient fluid supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of channels is increased to match the number of cutting edges, then fluid can be supplied to each cutting edge, but the inner diameter of each channel becomes insufficient and channel resistance increases
Solution Approach 1:
The fluid supply system is segmented into two functional parts: first channels that extend parallel to the rotational axis and second channels that extend radially toward cutting edges. This segmentation allows the first channels to have larger diameters for sufficient fluid supply while the second channels distribute the fluid to multiple cutting edges, resolving the contradiction between fluid supply amount and channel complexity.
Solution Approach 2:
Multiple second channels are connected to a single first channel, merging the fluid supply function. This allows one first channel with sufficient diameter to supply fluid to multiple cutting edges through multiple second channels, reducing the total number of first channels needed while maintaining adequate fluid supply to each cutting edge.
2Quantity of substance
If the number of first channels is increased to match the number of cutting edges, then each cutting edge receives fluid, but the limited internal space prevents securing sufficient inner diameter for each channel
Solution Approach 1:
A single first channel serves multiple functions by supplying fluid to multiple second channels, which in turn supply multiple cutting edges. This multi-functionality allows the first channel to maintain a sufficient inner diameter for adequate fluid supply while reducing the total number of first channels needed within the limited internal space of the cutting tool.
3Adaptability or versatility
If more channels are formed in the cutting tool interior, then fluid can reach more cutting edges, but it becomes difficult to secure sufficient inner diameter for each channel due to limited space
Solution Approach 1:
The channel arrangement utilizes two dimensional directions: first channels extend in the axial direction (parallel to rotational axis) while second channels extend in the radial direction (toward cutting edges). This two-dimensional arrangement optimizes space utilization within the cutting tool interior, allowing sufficient channel diameters to be secured while achieving comprehensive fluid distribution to multiple cutting edges.
Data Source
AI summary
A cutting tool includes a grip part and a cutting part. The grip part and the cutting part have a channel for guiding fluid supplied from outside to an outflow port. The channel includes a plurality of first channels that extend at least partially parallel to a rotational center axis, and second channels that extend from the first channels toward cutting edges of cutting inserts. In the cutting tool, the number of first channels is smaller than the number of cutting edges arranged in a circumferential direction.