Wire EDM Taper Control Using Angle-Dependent Machining Conditions
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Solution Overview
Problem
Conventional wire electrical discharge machines experience instability and prolonged machining times during taper machining due to the use of fixed machining conditions for the maximum inclination angle, leading to a high risk of wire electrode disconnection.
Innovation Solution
A control device and method that adjusts machining conditions based on the inclination angle of the wire electrode, using a machining condition calculation unit to determine optimal conditions for different angles, thereby reducing the risk of disconnection and increasing machining speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed machining conditions for maximum inclination angle are used during taper machining, then wire electrode disconnection risk is reduced, but machining time increases
Solution Approach 1:
The patent applies dynamics by transitioning from fixed machining conditions to dynamic, angle-dependent machining conditions. The control device calculates and adjusts machining parameters (current, pulse duration, feed rate) based on the real-time inclination angle of the wire electrode, allowing the system to adapt optimally to each machining stage rather than using conservative fixed settings throughout
Solution Approach 2:
The patent implements parameter changes by modifying machining parameters according to the inclination angle. The control device stores multiple sets of machining parameters corresponding to different inclination angles and selects/apples the appropriate parameters based on the current angle, enabling optimization of both stability and speed for each specific machining condition
2Productivity
If machining conditions are optimized for vertical wire electrode position, then machining speed increases, but wire electrode disconnection risk increases during taper machining
Solution Approach 1:
The patent applies parameter changes by storing and selecting different machining parameters based on inclination angle. When the wire electrode is vertical (0° inclination), optimized high-speed parameters are applied. As the inclination angle increases during taper machining, the control device automatically adjusts parameters to maintain stability, thus achieving both high speed and reliability across different machining stages
Solution Approach 2:
The system transitions from static vertical-position-optimized parameters to dynamic angle-adaptive parameters. The control device continuously monitors the inclination angle and adjusts machining parameters in real-time, enabling the system to maintain optimal performance whether the wire is vertical or inclined
3Productivity
If conventional fixed machining conditions are used for all inclination angles, then device complexity remains low, but machining efficiency decreases
Solution Approach 1:
The control device performs self-service by automatically calculating and determining optimal machining parameters based on the current inclination angle. The system includes a database of pre-stored parameters for different angles and an automatic selection mechanism, eliminating the need for manual parameter adjustment by the operator while achieving optimized machining efficiency
Solution Approach 2:
The patent implements feedback by using the detected inclination angle as input to automatically select appropriate machining parameters. The control device receives angle information, retrieves corresponding parameters from storage, and applies them to the machining process, creating a closed-loop system that adapts to changing machining conditions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for faster taper machining by dynamically adjusting machining parameters according to the wire electrode's inclination angle, enhancing machining efficiency and reducing the likelihood of wire disconnection.
Implementation Method 1
performing electrical discharge machining on a workpiece by generating electrical discharge between a wire electrode and the workpiece
Data Source
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AI summary
The present disclosure relates to a device for controlling a wire electric discharge machining device which executes taper machining. The control device comprises a first storage unit which stores a first machining condition according to a first inclination angle of a wire electrode, a second storage unit which stores a second machining condition according to a second inclination angle of the wire electrode, and a machining condition calculation unit which calculates, from first angle information indicating the first inclination angle, second angle information indicating the second inclination angle, the first machining condition, and the second machining condition, a third machining condition according to a third inclination angle of the wire electrode.