Cutting Tool Tangential Airflow for Chip Removal
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Solution Overview
Problem
Existing cutting tools face challenges in effectively removing cutting chips or powder from the cutting point due to the direction of cooling air flow, which obstructs visibility and accurate cutting operations.
Innovation Solution
A cutting tool design that includes a blower duct configured to direct cooling air from a fan in a tangential direction towards the cutting point, allowing for effective removal of chips or powder while maintaining visibility of the cutting point, and optionally incorporating a dust collecting nozzle for further chip removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling air is blown forwardly from the upper side of the electric motor toward the cutting point, then the electric motor is cooled, but the cutting chips or powder are blown upward and deposited again on the workpiece, reducing visibility and cutting accuracy
Solution Approach 1:
The blower duct is configured to blow cooling air in a tangential direction from the lower side of the fan rather than forwardly from the upper side. This inverted airflow direction allows the cooling air to effectively cool the electric motor while blowing cutting chips laterally away from the cutting point, preventing redeposition and maintaining visibility.
Solution Approach 2:
The airflow direction is changed from a forward horizontal direction to a tangential direction that utilizes the lateral dimension. The blower duct introduces air from the lower side and directs it tangentially, creating a lateral airflow component that effectively removes chips from the cutting point without obstructing the operator's view.
2Temperature
If cooling air is blown forwardly from the electric motor, then motor cooling is achieved, but additional devices or complex airflow control mechanisms are required to effectively remove chips
Solution Approach 1:
The cooling function and chip removal function are merged into a single integrated system. The blower duct serves dual purposes: it directs cooling air to the electric motor while simultaneously using the same airflow to blow cutting chips away from the cutting point. This eliminates the need for separate chip removal devices.
Solution Approach 2:
The cooling air flow system is designed to perform multiple functions. The same airflow that cools the electric motor also serves as a chip removal medium. The blower duct configuration enables the cooling air to effectively perform both thermal management and debris clearance functions without requiring additional components.
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 solution enables accurate and efficient removal of cutting chips or powder, improving visibility and operational efficiency during cutting operations without additional cost or complexity.
Implementation Method 1
a fan that produces a flow of a cooling air for cooling the motor
Data Source
AI summary
A cutting tool includes a tool unit including an electric motor, a fan and a rotary cutting blade. The fan and the rotary cutting blade are rotatably driven by the electric motor. A blower includes a blower duct introducing a flow of air produced by the fan toward a cutting point where a workpiece is cut by the rotary cutting blade.