Thermal Displacement Correction for Machine Tools
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Summary
Problems
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 solutions
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 accurate and easy operation across various specifications.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If individual parameter files are prepared for each set of machine specifications, then the thermal displacement correction can be accurately adapted to each specification, but the parameter setup becomes tedious and the risk of malfunction increases
Why choose this principle:
The patent creates a universal parameter file that can be used across multiple machine specifications by introducing specification identification information and conditional selection logic. Instead of maintaining separate parameter files for each specification variant, the system uses a single file that automatically selects appropriate parameters based on the detected machine specification, thereby reducing setup complexity while maintaining correction accuracy.
Principle concept:
If individual parameter files are prepared for each set of machine specifications, then the thermal displacement correction can be accurately adapted to each specification, but the parameter setup becomes tedious and the risk of malfunction increases
Why choose this principle:
The patent changes the parameter organization structure by grouping parameters with specification identification information and adding selection conditions. This allows the system to dynamically select appropriate parameter sets based on the actual machine specification, transforming the approach from static separate files to a dynamic single-file system with parameter selection capabilities.
Application Domain
Data Source
AI summary:
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 accurate and easy operation across various specifications.
Abstract
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.