Milling Tool Flank Cooling with Directed Coolant Channel
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Solution Overview
Problem
Existing milling tools often inefficiently distribute coolant to the flank and relief surfaces of cutting inserts, leading to suboptimal cooling and reduced tool life.
Innovation Solution
A milling tool design featuring a coolant passageway with a channel that directs coolant from the tool body's central recess to an outlet located behind the insert seat, ensuring a coherent, high-speed coolant stream reaches the cutting edge via the flank face, enhancing cooling efficiency and tool life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If coolant is provided via a coolant chamber bounded by a deflection surface, then coolant can reach the cutting edge, but coolant is provided as an elongated sheet traveling over the relief surface which is not optimal for cooling efficiency
Solution Approach 1:
The coolant passageway is divided into two distinct portions: a first portion extending from the central recess in an outward direction, and a second portion extending from the first portion to an outlet in the exterior of the tool body. This segmentation allows the coolant to be directed as a coherent stream along the flank face rather than as an elongated sheet, improving cooling efficiency while maintaining effective coolant delivery to the cutting edge.
2Temperature
If coolant is directed to the flank face, then cooling effect is improved, but coolant distribution and direction control becomes more complex
Solution Approach 1:
The second portion of the coolant passageway is designed as a channel with a length greater than its width, creating a dynamic flow path that directs coolant as a coherent stream along the flank face. This dynamic design allows the coolant to maintain directionality and coherence as it travels through the channel, improving cooling effectiveness without requiring overly complex structural arrangements.
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 directed coolant stream improves cooling effectiveness and extends tool life by ensuring precise coolant delivery to the cutting edge, reducing unwanted coolant spread and pressure losses.
Implementation Method 1
The second portion of the coolant passageway is a channel having a length that is greater than a width thereof. Thereby, the applied coolant will have a well-defined direction towards a location where it is most needed and will be provided as a coherent stream at high speed.
Data Source
AI summary
A tool body for a milling tool includes a front and rear end, an envelope surface extending between the front and rear ends, a central recess extending configured to receive coolant from a machine spindle, at least one insert seat for a cutting insert, and at least one coolant passageway for passage of coolant from the central recess to the exterior of the tool body. The coolant passageway has a first portion extending from the central recess towards the envelope surface, and a second portion extending from the first portion to an outlet in the tool body exterior. The second portion of the coolant passageway is directed towards the insert seat such that, when a cutting insert having a flank face is mounted in the insert seat and the flank face faces outward, coolant from the outlet passes along the flank face towards the cutting edge of the insert.