Machine Tool Selection Support System for Accurate Temperature Estimation
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Solution Overview
Problem
Existing systems for estimating the temperature of motor and motor drive devices in machine tools are inadequate due to insufficient information, leading to low accuracy and difficulties in taking appropriate measures to prevent heat-related malfunctions.
Innovation Solution
A selection support system that receives operation, machine, and housing part information to estimate internal housing part temperatures, determines the necessity of cooling devices, calculates required cooling capacity, and selects appropriate motor and motor drive components to maintain temperatures within safe limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only motor and motor drive device information is used for temperature estimation, then the estimation process is simple, but the temperature estimation accuracy is low
Solution Approach 1:
The temperature estimation process is segmented into multiple independent calculation stages: motor temperature estimation, motor drive device temperature estimation, and housing part internal temperature estimation. Each stage processes specific information independently and contributes to the final comprehensive temperature assessment, allowing complex information processing to be broken down into manageable segments.
Solution Approach 2:
The estimation approach transitions from considering only thermal parameters (calorific values) to incorporating multiple dimensional factors including housing part dimensions, material properties, ambient temperature, and operational parameters. This multi-dimensional information integration significantly improves temperature estimation accuracy while systematically managing complexity through structured processing.
2Reliability
If comprehensive information is collected for temperature estimation, then temperature estimation accuracy improves, but the system complexity increases
Solution Approach 1:
The system performs preliminary data collection and validation of housing part information, motor information, and motor drive device information before executing the temperature estimation calculation. This preliminary preparation ensures data quality and completeness, improving reliability while preventing errors that would complicate the estimation process.
Solution Approach 2:
The temperature estimation results are fed back to the selection support system, which uses this information to provide recommendations for preventing overheating. This feedback loop continuously improves system reliability by learning from past temperature patterns and adjusting prevention strategies accordingly.
3Measurement precision
If housing part dimensions are not considered, then the calculation process is simpler, but the temperature estimation becomes less accurate
Solution Approach 1:
The system dynamically adjusts calculation parameters based on housing part dimensions, including volume, surface area, and wall thickness. These dimensional parameters directly influence heat dissipation calculations, allowing the system to adapt the thermal model complexity to match the actual housing configuration, thereby improving precision without unnecessarily increasing calculation complexity.
Data Source
AI summary
The selection support system selects components constituting a machine tool including a drive system having a motor and a motor drive device configured to drive and control the machine tool, and a housing part configured to house at least a part of the drive system. The selection support system includes an information reception unit configured to receive operation information on operation of the machine tool, machine information on a configuration of the machine tool, and housing part information on the housing part, and a calculation unit. The calculation unit has a temperature estimation unit configured to estimate a temperature of an inside of the housing part, on the basis of the operation information, the machine information, and the housing part information received by the information reception unit.