Wire EDM Sealing Portion Flow Control
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Solution Overview
Problem
In conventional wire electric discharge machines, the constant flow rate of machining fluid to the sealing portion leads to excessive pressure on the filtration filter, reducing its service life due to high flow rates from the dirty tank to the clean water tank.
Innovation Solution
A wire electric discharge machine with a measurement unit to assess the flow rate of machining fluid delivered to the nozzle, a flow rate storage unit, a flow rate setting unit, and a flow rate control unit to adjust the flow rate supplied to the sealing portion based on measured parameters, thereby reducing the load on the filtration filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flow rate of machining fluid supplied to the sealing portion is kept constant, then the sealing portion is adequately protected, but the filtration filter experiences excessive pressure and reduced service life
Solution Approach 1:
The patent applies dynamics by transitioning from a constant flow rate supply system to a variable flow rate system. The flow rate control unit dynamically adjusts the flow rate of machining fluid supplied to the sealing portion based on real-time measurements from the flow rate detection unit, allowing the system to adapt flow conditions to actual needs rather than maintaining a fixed high flow rate that damages the filter.
Solution Approach 2:
The patent implements feedback control by using the flow rate detection unit to continuously monitor the actual flow rate of machining fluid, comparing it with the target flow rate, and adjusting the supply accordingly. This closed-loop feedback mechanism ensures the sealing portion receives adequate protection while preventing excessive flow rates that would damage the filtration filter.
2Productivity
If the flow rate of machining fluid from the dirty tank to the clean water tank is increased, then the clean water tank is replenished faster, but the filtration filter is damaged due to excessive pressure
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the flow rate parameter of machining fluid based on system conditions. Instead of maintaining a high constant flow rate that damages the filter, the system varies the flow rate parameter within an optimal range, reducing it when necessary to protect the filter while maintaining adequate replenishment of the clean water tank.
3Duration of action of stationary object
If a flow rate control system is added to adjust machining fluid flow, then the filter service life is extended, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical flow control mechanisms with a more streamlined system combining a flow rate detection unit and a flow rate control unit. This substitution simplifies the overall system by using detection and control components that automatically adjust flow rates without requiring complex mechanical adjustment mechanisms, thereby extending filter service life while minimizing added complexity.
Data Source
AI summary
A wire electric discharge machine is provided with a storage unit configured to store the flow rate of a machining fluid delivered to a sealing portion in a machining tank in association with the flow rate of the machining fluid delivered to a nozzle. The flow rate of the machining fluid delivered to the nozzle is measured, and the flow rate of the machining fluid to be supplied to the sealing portion is read from the flow rate storage unit and set, based on the measured flow rate.