Machine Tool Heat Sink for Counter Balancing Mass Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing machine tool heat dissipating architectures, such as those described in China patent No. 2887526 and US publication No. 2009/0239453, are inefficient in dissipating heat from counter balancing masses and can lead to overheating and reduced durability due to inefficient airflow paths and contamination of internal components.
Innovation Solution
A heat dissipating architecture for machine tools featuring a heat sink with first and second blade portions corresponding to the counter balancing mass's balancing portions, allowing for direct airflow inhalation and exhaustion to reduce the working temperature of the counter balancing mass while minimizing space occupation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat sink is mounted around the lower counter balancing masses at the same height, then the heat from counter balancing masses can be dissipated, but the airflow path becomes long and complex, reducing flow rate and increasing dust contamination
Solution Approach 1:
Instead of mounting the heat sink at the same height as the counter balancing mass (conventional approach), the patent inverts the arrangement by positioning the heat sink below the counter balancing mass. This creates a direct vertical airflow path where air enters from below, passes through the counter balancing mass, and exits through the heat sink, eliminating the need for long horizontal airflow paths and reducing dust contamination.
Solution Approach 2:
The patent transitions from a horizontal airflow arrangement to a vertical airflow arrangement by positioning the heat sink in the vertical dimension below the counter balancing mass. This dimensional change creates a more direct and efficient airflow path, improving cooling effectiveness while reducing the overall length of the airflow trajectory.
2Temperature
If external air is introduced through the inlet and passes through the motor first, then the air temperature increases before reaching the counter balancing masses, reducing heat dissipation efficiency
Solution Approach 1:
The patent segments the airflow paths for the motor and counter balancing mass into separate channels. The heat sink is positioned to create a dedicated airflow path that enters from the bottom, passes through the counter balancing mass, and exits independently, rather than sharing a common path with the motor airflow. This segmentation ensures cool air reaches the counter balancing mass directly without being preheated by the motor.
Solution Approach 2:
The heat sink acts as an intermediary component that mediates the airflow between the inlet and the counter balancing mass. By positioning the heat sink below the counter balancing mass, it creates an intermediate cooling zone that directs cool air through the counter balancing mass before the air can be heated by the motor, thus protecting the counter balancing mass from thermal accumulation.
3Temperature
If the heat sink blades are mounted at the same height as the counter balancing masses, then heat dissipation is possible, but the space for mounting is increased and the machine tool volume increases
Solution Approach 1:
The patent applies the nesting principle by positioning the heat sink within the existing structural space of the machine tool, specifically below the counter balancing mass within the handle assembly. This nested arrangement allows the heat sink to utilize existing voids and spaces in the structure, eliminating the need for additional external mounting space and avoiding an increase in overall machine tool volume.
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 solution effectively reduces the working temperature of counter balancing masses, increases the lifespan of machine tool components, and maintains normal operation by providing a more efficient airflow path without increasing the machine tool's volume, thus enhancing mobility and operation efficiency.
Implementation Method 1
the heat sink can inhale air via the inlet, transmits the air from the first blade portion to the second blade portion, and then exhausts the air from the second blade portion
Implementation Method 2
the heat sink can operate synchronously with the two counter balancing masses for introducing air to dissipate the heat generated by the two counter balancing masses
Implementation Method 3
the air for passing through the two counter balancing masses has passed through the motor first and possesses a relatively higher temperature, so that the heat produced by the two counter balancing masses cannot be dissipated efficiently
Data Source
AI summary
A heat dissipating architecture for a machine tool is provided. The machine tool includes an accommodating space, a tool shaft mounted in the accommodating space, a counter balancing mass having a first balancing portion and a second balancing portion mounted on the tool shaft for causing an eccentric rotation stroke of the tool shaft, and an inlet communicating with the accommodating space. The heat sink is mounted on the counter balancing mass. The heat sink includes a first blade portion corresponding to the first balancing portion, a second blade portion corresponding to the second balancing portion, and a linking portion for connecting the first and second blade portions, such that during the rotation stroke of the tool shaft, the heat sink inhales air via the inlet, transmit the air from the first blade portion to the second blade portion, and then exhausts the air from the second blade portion.