Linear Motor Cooling Mechanism with Insulating Layer
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Solution Overview
Problem
Heat generated by a motor affects the precision and integrity of a motion platform coupled to its rotor, causing deformations and reduced precision in precision machining due to inadequate heat transfer mechanisms.
Innovation Solution
A cooling mechanism is introduced with a cooling portion sandwiched between the rotor and platform, featuring an insulating layer and extruded aluminum bars to block direct heat transfer, using a cooler with a coupling seat, coupling plane, and insulating pads to prevent heat from being transferred to the platform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a copper tube is used for fluid flow between the rotor and motion platform to cool the motor, then heat transfer from the motor is improved, but heat is still transferred to the motion platform through direct contact between the copper tube and the platform, causing precision degradation
Solution Approach 1:
An insulating layer is introduced as an intermediary between the cooling portion (copper tube) and the motion platform. This intermediary blocks the direct thermal contact path while allowing the cooling function to operate, thereby preventing heat from reaching the platform and maintaining machining precision.
Solution Approach 2:
The coupling structure is segmented into distinct functional zones: a cooling portion for heat dissipation, an insulating layer for thermal isolation, and a coupling seat for mechanical connection. This segmentation allows simultaneous achievement of cooling efficiency and thermal isolation to preserve platform precision.
2Ease of manufacture
If direct contact is provided between the cooling portion and the platform for structural simplicity, then assembly is easier, but heat transfer to the platform occurs causing deformations and precision loss
Solution Approach 1:
The coupling structure uses composite material layers including a metal cooling portion, an insulating material layer, and a coupling seat. This composite structure combines the thermal conductivity of metal for cooling with the thermal insulation properties of the insulating layer, achieving both cooling effectiveness and precision maintenance.
3Temperature
If the cooling portion is placed in direct contact with the rotor for maximum cooling efficiency, then heat dissipation is improved, but heat is transferred to the platform through the cooling structure, affecting displacement precision
Solution Approach 1:
The insulating layer serves as a thermal intermediary that decouples the heat flow path. It allows the cooling portion to remain in contact with the rotor for effective cooling while blocking the transmission of heat to the motion platform, thereby preserving displacement measurement precision.
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 effectively reduces heat transfer to the platform, ensuring precision and stability by providing thermal insulation and preventing direct contact between the cooling portion and the platform, thus maintaining the precision of the motion platform during machining.
Implementation Method 1
an insulating layer is positioned between the coupling plane and the coupling seat, in such a manner that the coupling plane, the insulating layer, and the coupling seat overlap each other closely, and the insulating layer blocks direct contact between the coupling plane and the coupling seat
Implementation Method 2
a cooler is positioned between the coupling seat and the rotor
Implementation Method 3
heat transfer is blocked between the cooling portion and the platform, thereby preventing heat received during heat dissipation by the cooling portion from being transferred to the platform
Data Source
AI summary
The present invention provides a cooling mechanism between a linear motor rotor and a platform coupled thereto, characterized essentially in that a cooling portion is provided between the rotor and the platform, and further in that heat transfer is blocked between the cooling portion and the platform, thereby preventing heat received by the cooling portion during heat dissipation from being transferred to the platform, so as to ensure the precision of the platform.