Magnetic Core Removal Mechanism for Wire EDM Complete Extraction
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Solution Overview
Problem
Existing core moving devices for wire electric discharge machines face issues with reliably removing cores adsorbed to magnets, often leaving portions of the core unseparated due to uneven magnetic force distribution, leading to incomplete extraction and complex configurations.
Innovation Solution
A core moving device with a core adsorption holding part comprising a rod member with a magnetized distal end and a cylindrical member that moves relative to the rod member to expose or protrude beyond the distal end surface, allowing for controlled adsorption and removal of the core using a cylindrical member drive unit, ensuring complete extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protrusion is used to push the core away from the magnet, then the core can be removed from the magnet, but only a portion close to the protrusion is separated while portions far from the protrusion remain adsorbed
Solution Approach 1:
The device is divided into a rod member with magnet and a separate cylindrical member that can move independently. The cylindrical member is segmented into an adsorption position and a removal position, allowing different parts of the core to be affected differently at different times, solving the problem of incomplete core separation.
Solution Approach 2:
The cylindrical member is made movable relative to the rod member along the axial direction. By dynamically changing the position of the cylindrical member between adsorption and removal positions, the device can reliably separate the core from the magnet without requiring complex multi-component structures.
2Reliability
If the cylindrical member moves backward to expose the distal end surface of the rod member, then the core can be adsorbed by the magnet, but the device requires precise positioning control
Solution Approach 1:
The cylindrical member utilizes its own weight to automatically move to the adsorption position (lower position) where it exposes the magnet's distal end surface. This self-service mechanism eliminates the need for complex positioning control systems while ensuring reliable core adsorption.
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 enables reliable and timely removal of cores from the magnet, simplifies the device configuration, and ensures complete extraction of the core, improving operational efficiency and ease of use.
Implementation Method 1
a core adsorption holding part (20) which adsorbs a core (WP1) cut out of a workpiece (WP) with a magnetic force of a magnet (21)
Implementation Method 2
the core having been adsorbed to the distal end surface of the rod member by the magnet is pushed out against the magnetic force and removed
Data Source
AI summary
A core moving device includes a core adsorption holding part which adsorbs a core cut out of a workpiece with a magnet and moves the core, in which the core adsorption holding part includes a rod member in which a distal end portion thereof is constituted of the magnet, a cylindrical member into which the rod member is inserted and which, on one hand, moves backward to expose a distal end surface of the rod member so that the core is adsorbed to the distal end surface of the rod member and, on the other hand, moves forward to protrude from the distal end surface of the rod member so that the core is removed from the distal end surface of the rod member, and a cylindrical member drive unit which at least moves the cylindrical member forward.