Thermal Displacement Correction Using Universal Parameter Database
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Solution Overview
Problem
Existing thermal displacement correcting apparatuses for machine tools require tedious parameter setup and increased risk of malfunction when applied to machines with different specifications, due to the need for individual parameter files for each set of specifications, leading to poor productivity and manageability.
Innovation Solution
A thermal displacement correcting apparatus and method that calculates and corrects thermal displacement by selecting parameters and temperature sensors from a common database based on machine information, allowing for easy operation across various specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If individual parameter files are prepared for each machine specification, then the thermal displacement correction can be accurately tailored to each machine, but the setup time and complexity increase significantly
Solution Approach 1:
The patent creates a universal parameter file that can be applied across multiple machine specifications. Instead of preparing separate parameter files for each machine variant, the invention uses a single parameter file that automatically adapts to different machine configurations through automated parameter selection based on machine information, thereby reducing setup time while maintaining correction accuracy.
Solution Approach 2:
The system automatically changes parameters based on the specific machine specification being processed. By reading machine information and automatically selecting appropriate parameters from the universal parameter file, the system adapts the thermal displacement correction to each machine variant without requiring manual reconfiguration, thus eliminating the need for multiple individual parameter files.
2Manufacturing precision
If individual parameter files are prepared for each machine specification, then the correction can be optimized for each machine, but the risk of parameter setting errors increases
Solution Approach 1:
The system performs self-service by automatically selecting and configuring parameters based on machine information. The automated parameter selection process eliminates manual parameter setting, thereby reducing the risk of human error in parameter configuration while maintaining the accuracy needed for different machine specifications.
Solution Approach 2:
The system uses machine information as feedback to automatically select the appropriate parameters. By reading the machine specification data and using it to automatically configure the thermal displacement correction parameters, the system ensures that the correct parameters are applied without manual intervention, reducing the risk of incorrect parameter setting.
3Manufacturing precision
If multiple parameter files are maintained for different specifications, then each machine can be precisely corrected, but the manageability and operation become more difficult
Solution Approach 1:
The patent implements a universal parameter file that serves multiple machine specifications. This single parameter file contains all necessary parameters for different machine variants, and the system automatically selects the appropriate parameters based on machine information, thereby simplifying management and operation while maintaining precision correction capabilities.
Solution Approach 2:
The invention merges multiple specification-specific parameters into a single universal parameter file. By combining all parameters that may be needed for different machine specifications into one file and using automated selection logic, the system reduces the number of files that need to be managed while preserving the ability to provide precise correction for each specification.
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 approach simplifies the setup and operation of thermal displacement correction, reducing the risk of malfunctions and improving productivity and manageability by using a common database for multiple machine specifications.
Implementation Method 1
The transfer of heat generated at power portions and slide portions and a change in environment temperature cause thermal deformation in a machine tool
Data Source
AI summary
A thermal displacement correcting apparatus includes a correction amount estimating device and a parameter automatic selecting device that, in a machine tool having two different sets of specifications that differ due to the presence/absence of a scale and different methods of measuring the lengths of a bed and a table, estimate a thermal displacement correction amount of the machine tool of each set of specifications. The two devices store a collection of parameters for an estimated thermal displacement calculation corresponding to each of the bed, the scale, the table, and a workpiece, as a database, and select the parameters belonging to the set of specifications from the database based on machine information according to each set of specifications, calculate estimated thermal displacements of the bed, the table, and the workpiece, or also the scale, according to the selected parameters, and combine the estimated thermal displacements.