Oscillation Cutting Control Device for Machine Tool
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In machine tool oscillation cutting, operators face a significant load in determining the optimal oscillation frequency due to changes in machining and servo control conditions, leading to inefficiencies and potential workpiece damage from swarf entanglement.
Innovation Solution
A control device that automatically generates an oscillation command for the feed shafts based on relative rotation and feed speeds, using an estimation part to calculate oscillation frequency and amplitude, and a determination part to ensure the frequency is optimal for machining and servo conditions, thereby controlling the feed shafts to intermittently cut the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an operator manually determines the oscillation frequency based on machining conditions, then the swarf can be shredded as desired, but the operator load increases significantly when conditions change
Solution Approach 1:
The control device automatically determines the oscillation frequency based on machining conditions, machining operation conditions, and servo control conditions without requiring operator intervention. The system serves itself by reading conditions from storage and calculating the optimal frequency, thereby eliminating the need for manual determination when conditions change
Solution Approach 2:
The system continuously monitors machining conditions, machining operation conditions, and servo control conditions, and automatically adjusts the oscillation frequency based on this feedback. The control device reads current conditions, compares them with stored data, and determines the appropriate oscillation frequency to maintain optimal swarf shredding
2Productivity
If the oscillation frequency is not optimized, then the operator workload is reduced, but swarf entanglement occurs and workpiece quality deteriorates
Solution Approach 1:
The control device proactively determines the optimal oscillation frequency before machining operations begin or before conditions change. By pre-calculating the appropriate frequency based on stored machining conditions and current operational parameters, the system ensures optimal swarf shredding is maintained without interruption
Solution Approach 2:
The system dynamically changes the oscillation frequency parameter based on variations in machining conditions, machining operation conditions, and servo control conditions. The control device adjusts this critical parameter automatically to maintain optimal cutting performance and prevent swarf entanglement throughout the machining process
Data Source
AI summary
A control device includes a position command generation part, an oscillation command generation part, and a storage part for storing machining operation conditions and servo control conditions. The oscillation command generation part includes an estimation part which estimates an oscillation amplitude and an oscillation frequency of an oscillation command based on a rotation speed of a workpiece and a position command generated by the position command generation part, and a determination part which determines whether or not the estimated oscillation frequency is an optimum value based on the machining operation conditions and the servo control conditions.