Machine Tool Control Device for Energy Optimization
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Solution Overview
Problem
Modern machine tools face increased complexity and performance, leading to significant energy consumption and safety risks, particularly during machining processes, necessitating a solution that optimizes energy use and ensures safe operation.
Innovation Solution
A device that controls operating functions of machine tools by allowing separate control of energy supply to specific components, enabling flexible switch-off times based on predetermined criteria such as time intervals or operating states, while ensuring safety-relevant functions remain active, and includes features for monitoring and authorization to prevent unsafe shutdowns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the machine tool remains switched on continuously to ensure operational readiness and safety, then safety and responsiveness are improved, but energy consumption increases
Solution Approach 1:
The power supply system is segmented into a main power supply and multiple auxiliary power supplies that can be independently controlled. Each auxiliary power supply corresponds to specific operating functions (cooling lubricant circulation, chip conveyor, illumination, etc.) and can be switched off separately based on operational needs, allowing selective power reduction while maintaining essential functions
Solution Approach 2:
The system dynamically adjusts the power supply state of auxiliary functions based on real-time operational conditions. The control device monitors machine state and automatically switches auxiliary power supplies on or off according to predefined criteria, transforming the static power supply into a dynamic, adaptive system that responds to actual operational requirements
2Use of energy by moving object
If auxiliary operating functions are switched off to reduce energy consumption, then energy efficiency is improved, but operational complexity increases
Solution Approach 1:
The control device automatically manages the switching of auxiliary power supplies based on monitored machine state and predefined switch-off criteria. The system self-regulates without requiring manual intervention, automatically determining when to switch functions on or off based on operational parameters such as spindle speed, feed rate, and selected machining program
Solution Approach 2:
The system continuously monitors operational parameters (spindle speed, feed rate, selected program) and uses this feedback to automatically control the power state of auxiliary functions. The control device receives feedback from the machine state and adjusts power supply accordingly, creating a closed-loop control system that simplifies user interaction
3Use of energy by moving object
If the main power supply is switched off to maximize energy savings, then energy consumption is reduced, but safety risks increase
Solution Approach 1:
The power supply system is divided into essential and non-essential functions. Essential safety functions (emergency stop circuits, safety monitoring) remain powered through the main power supply, while non-essential auxiliary functions are powered separately and can be switched off without compromising safety
Solution Approach 2:
The control device acts as an intermediary between the main power supply and auxiliary power supplies. It manages the transition states and ensures that auxiliary functions are only switched off when safe, coordinating between power management and safety requirements
Data Source
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AI summary
The invention provides a device for controlling operating functions of a machine tool with a device 2 for switching on or off a main power supply and at least one device 3 for determining a switch-off time of an operating function of the machine tool depending on a selectable criterion.