Linear Motion Guide Thermal Height Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Typical linear motion guides face challenges in achieving precise installation and adjustment, particularly in micro-scale applications where precision of several micrometers is required.
Innovation Solution
A linear motion guide with a height adjustment module that includes a thermally expandable support, heated by a coil, and a height measuring unit, allowing for precise adjustment of the guide rail's height by calculating thermal expansion and using materials like Invar, Superinvar, Kovar, or Inconel, and covered to prevent heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a thin metal liner is used to adjust the installation height, then the height adjustment precision is improved (about 20-30 μm), but the device complexity and adjustment difficulty increase
Solution Approach 1:
The patent changes the physical state of the support from cold to hot, utilizing thermal expansion to adjust the guide rail height. By heating the support, its length increases, thereby adjusting the installation height of the guide rail. This parameter change approach replaces complex mechanical adjustment mechanisms with a simpler thermal expansion-based system.
Solution Approach 2:
The patent replaces the traditional mechanical height adjustment mechanism (using thin metal liners) with a thermal field-based adjustment system. Instead of mechanically inserting or removing precision metal layers, the system uses controlled heating to expand the support and achieve height adjustment, thereby simplifying the device structure.
2Ease of operation
If thermal expansion is used for height adjustment, then the ease of operation is improved, but energy consumption increases due to heating requirements
Solution Approach 1:
The heating process is performed periodically rather than continuously. The support is heated only when height adjustment is required, and the heating is stopped once the desired height is achieved. This periodic action reduces overall energy consumption compared to continuous heating, while still maintaining the ease of operation benefit.
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
Enables easy and accurate adjustment of the guide rail's height, maintaining straightness and precision, especially in micro machine tools, by thermally expanding the support to adjust the gap between the guide rail and the floor, allowing for fine displacement measurements.
Implementation Method 1
a heating unit heating the support where a gap between the floor and the guide rail is adjusted as the support is thermally heated by the heating unit
Data Source
AI summary
A linear motion guide includes a guide rail disposed on a floor, a block movably mounted on the guide rail, a height adjustment module disposed between the guide rail and the floor, where the height adjustment module includes a support disposed on the floor to support the guide rail and a heating unit heating the support, where a gap between the floor and the guide rail is adjusted as the support is thermally heated by the heating unit.