Machine Tool Thermal Displacement Correction Visualization
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Solution Overview
Problem
Existing machine tools struggle to accurately account for the influence of heat on the displacement of the cutting edge position, making it difficult for workers to input adequate correction amounts, especially due to temperature changes from the machine's operation and ambient conditions.
Innovation Solution
A machine tool equipped with a controller and display device that stores correction history data, allowing for the display of correction amounts over time, enabling workers to easily grasp and input correction amounts considering thermal displacement, and includes features for data selection, deletion, and graphical representation of machining and time-based corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If correction amounts are displayed based on elapsed time since tool replacement, then workers can visualize correction history, but workers cannot easily grasp the influence of heat on correction amounts
Solution Approach 1:
The patent introduces a new time reference dimension by displaying correction amounts based on current time rather than elapsed time since tool replacement. This dimensional change in time representation allows workers to directly observe the relationship between ambient temperature changes and correction amounts, making the heat influence visible and assessable on the graph.
2Device complexity
If workers manually determine correction amounts without time-based visualization, then device complexity is reduced, but manufacturing precision deteriorates due to inability to account for thermal displacement
Solution Approach 1:
The patent implements a feedback mechanism by displaying historical correction data on a graph with time-based indexing. Workers can observe past correction patterns related to temperature changes and use this visual feedback to determine appropriate correction amounts for current conditions, thereby improving manufacturing precision without requiring complex automated compensation systems.
Data Source
AI summary
A machine tool includes a controller including a storage unit that stores correction history data including correction amounts of the positions of tools input from a worker and time when the correction amounts are input, in association with the tools; and a display device that can display a time-based graph showing a relationship between the time and the correction amount for each tool.