Coolant Nozzle Control for Moving Chip Removal in Machine Tools
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Solution Overview
Problem
Existing machine tools face challenges in accurately discharging coolant liquid to moving targets such as chips during processing due to the movement of various components within the machine tool, making it difficult to manage chip deposition and continue processing efficiently.
Innovation Solution
An information processing device that utilizes an imaging device to acquire machine tool interior images, detects targets using image recognition, and controls a liquid discharger to adjust nozzle position, orientation, and discharge pressure based on acquired position information, ensuring accurate liquid discharge to moving targets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If liquid discharge is performed toward a moving target in a machine tool, then chip removal effectiveness is improved, but discharge accuracy deteriorates due to target movement
Solution Approach 1:
The liquid discharger is made movable to track and follow the moving target (workpiece or chips). The discharge nozzle can dynamically adjust its position to maintain optimal discharge accuracy while following the target's movement, thereby resolving the contradiction between maintaining discharge accuracy and adapting to target movement for effective chip removal.
Solution Approach 2:
The system uses imaging devices to detect the real-time position of the target and feeds this information back to the liquid discharger control system. This feedback mechanism enables continuous adjustment of the discharge position and parameters to maintain accuracy despite target movement, allowing effective chip removal while preserving discharge precision.
2Measurement precision
If the liquid discharger position is adjusted to follow a moving target, then discharge accuracy is improved, but system complexity increases
Solution Approach 1:
The liquid discharger system is designed to perform multiple functions: it can discharge liquid in fixed positions, move to track targets, and adjust discharge parameters. This multi-functionality consolidates what would otherwise require separate systems into one integrated unit, improving discharge accuracy without proportionally increasing overall system complexity.
Solution Approach 2:
An information processing device serves as an intermediary between the imaging/detection system and the liquid discharger. This mediator processes position information, calculates optimal discharge parameters, and controls the discharger, thereby managing system complexity through modular architecture while maintaining high discharge accuracy.
3Measurement precision
If real-time position information is acquired for moving targets, then liquid discharge accuracy is improved, but information processing requirements increase
Solution Approach 1:
The system performs preliminary processing of position information by predicting future target positions based on current movement trends. This allows the liquid discharger to pre-position itself for optimal discharge, reducing the need for complex real-time processing during the actual discharge moment and lowering overall information processing requirements while maintaining accuracy.
Data Source
AI summary
An information processing device of the present disclosure is for controlling a liquid discharger included in a machine tool discharging liquid so as to move chips occurring from a workpiece. The information processing device includes an image acquiring portion, a detector, a position acquiring portion, and a controller. The position acquiring portion can acquire first position information of a movable portion when imaged by an imaging device and second position information of the movable portion after the movable portion moves from the first position information, and the controller controls at least one of a position, orientation, and discharge pressure of the liquid discharger based on (i) a position of the target when imaged by the imaging device, and (ii) the first position information and (iii) the second position information acquired by the position acquiring portion, when the target moves as a result of movement of the movable portion.