Wire Electrical Discharge Machine Compressed Air Pressure Control
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Solution Overview
Problem
Wire electrical discharge machines face challenges in automatically feeding wire electrodes of varying rigidity without generating excessive noise, as high pressure compressed air is required for low rigidity electrodes, leading to unnecessary noise when handling more rigid electrodes.
Innovation Solution
A wire electrical discharge machine equipped with a feed roller, winding roller, guide member, compressed air supply device, storage medium for rigidity-pressure data, and a controller that adjusts compressed air pressure based on wire electrode rigidity, using a pressure regulating valve or multiple compressed air supply devices to optimize air pressure for each type of electrode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high pressure compressed air is supplied to feed low rigidity wire electrodes, then the wire electrode can be fed straight into the guide member, but noise is excessively increased
Solution Approach 1:
The patent applies dynamics by making the compressed air supply system adjustable based on wire electrode rigidity. The control unit dynamically selects appropriate compressed air supply conditions (pressure, flow rate, or whether to supply at all) according to the detected wire rigidity, enabling the system to adapt its behavior rather than operating at fixed high pressure for all wire types.
Solution Approach 2:
The patent applies parameter changes by varying the compressed air supply parameters (pressure, flow rate, or supply state) based on wire electrode rigidity. For high rigidity wires, the compressed air pressure is reduced or supply is stopped entirely, while for low rigidity wires, appropriate compressed air supply is provided. This changes the physical parameters of the compressed air to match the requirements of different wire types.
2Reliability
If a high capacity compressor is used to supply highly compressed air for low rigidity wire electrodes, then wire feeding is reliable, but noise is unnecessarily increased for high rigidity wire electrodes
Solution Approach 1:
The patent applies dynamics by making the compressed air supply system adjustable based on wire electrode rigidity. The control unit dynamically selects appropriate compressed air supply conditions (pressure, flow rate, or whether to supply at all) according to the detected wire rigidity, enabling the system to adapt its behavior rather than operating at fixed high pressure for all wire types.
Solution Approach 2:
The patent applies parameter changes by varying the compressed air supply parameters (pressure, flow rate, or supply state) based on wire electrode rigidity. For high rigidity wires, the compressed air pressure is reduced or supply is stopped entirely, while for low rigidity wires, appropriate compressed air supply is provided. This changes the physical parameters of the compressed air to match the requirements of different wire types.
3Reliability
If compressed air is supplied at high pressure to ensure straight feeding, then wire deflection is prevented, but noise is excessively generated
Solution Approach 1:
The patent applies dynamics by making the compressed air supply system adjustable based on wire electrode rigidity. The control unit dynamically selects appropriate compressed air supply conditions (pressure, flow rate, or whether to supply at all) according to the detected wire rigidity, enabling the system to adapt its behavior rather than operating at fixed high pressure for all wire types.
Solution Approach 2:
The patent applies parameter changes by varying the compressed air supply parameters (pressure, flow rate, or supply state) based on wire electrode rigidity. For high rigidity wires, the compressed air pressure is reduced or supply is stopped entirely, while for low rigidity wires, appropriate compressed air supply is provided. This changes the physical parameters of the compressed air to match the requirements of different wire types.
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
This configuration allows for reliable auto wire feeding of electrodes of different rigidity levels while minimizing noise by supplying appropriate compressed air pressure, preventing electrode bending and ensuring successful feeding.
Implementation Method 1
a compressed air supply device configured to supply compressed air to the insertion hole so that the compressed air flows through the insertion hole along a feed direction of the wire electrode
Implementation Method 2
a pressure regulating valve arranged in a supply pipe configured to connect the insertion hole with the compressed air supply device, the pressure regulating valve being configured to regulate the pressure of the compressed air supplied from the compressed air supply device to the insertion hole
Data Source
Figure 1
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AI summary
A wire electrical discharge machine (10) includes a guide pipe (22) arranged in a path along which a wire electrode (12) is fed from a feed roller (20) to a workpiece (W), and formed with an insertion hole (22a) through which the wire electrode (12) is inserted, a compressed air supply device (30) configured to supply compressed air to the insertion hole (22a) so that compressed air flows through the insertion hole (22a) along a feed direction of the wire electrode (12), a database (34) configured to store data indicative of a relationship between rigidity information of the wire electrode (12) and pressure information of compressed air, and a controller (36) configured to set pressure of the compressed air supplied to the insertion hole (22a), based on the rigidity information of the wire electrode (12) fed to the workpiece (W) and the data.