Magnetic Core Removal Mechanism for Wire EDM Cut Cores
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Solution Overview
Problem
Existing core moving devices for wire electric discharge machines face challenges in reliably adsorbing and removing cores of various sizes and weights due to limitations in magnetic force and require frequent replacement of cylindrical members, rod members, and magnets, leading to increased machining time and instability in core holding.
Innovation Solution
A core moving device with a bottomed cylindrical member and a rod member, where the cylindrical member moves forward and backward relative to the rod member to adsorb and remove cores using a magnetic force, allowing for reliable holding and removal of cores of different sizes and weights without the need for frequent replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inner hole of the cylindrical member is made smaller to fit the core, then the core can be removed from the rod member, but the rod member and magnet must be made smaller, reducing adsorption force and making it impossible to hold heavy cores
Solution Approach 1:
The device is divided into two functional components: the rod member with magnet for adsorption and the cylindrical member for removal. The cylindrical member's inner hole size is segmented from the rod member diameter, allowing the hole to be large enough for core removal while the rod member maintains sufficient diameter for strong magnetic adsorption of heavy cores.
Solution Approach 2:
The cylindrical member acts as an intermediary tool that enables core removal without requiring the rod member or magnet to be resized. This intermediary component with its removable inner hole structure allows cores of various sizes to be extracted while the adsorption system maintains its original adsorption force.
2Adaptability or versatility
If the size of the rod member and magnet is reduced to accommodate smaller cores, then smaller cores can be handled, but the adsorption force decreases and heavy cores cannot be held stably
Solution Approach 1:
The inner hole diameter of the cylindrical member is made variable rather than fixed. This dynamic adjustment capability allows the cylindrical member to accommodate cores of different sizes for removal, while the rod member and magnet maintain their original size and adsorption force for reliable holding of heavy cores.
Solution Approach 2:
The inner hole diameter parameter of the cylindrical member is changed to be adjustable or variable, enabling adaptation to different core sizes. This parameter change in the cylindrical member does not affect the rod member or magnet, so adsorption force and holding stability are maintained while versatility is improved.
3Adaptability or versatility
If frequent replacement of cylindrical members, rod members, and magnets is performed to match core sizes, then the correct size can be matched, but machining time increases and efficiency decreases
Solution Approach 1:
The cylindrical member is designed as a universal tool that can handle cores of various sizes through its variable inner hole diameter, eliminating the need for multiple specialized components. This multi-functionality allows a single cylindrical member design to serve all core size requirements, preventing frequent replacements and maintaining high machining efficiency.
4Ease of operation
If a large start hole is machined to cut out a light core, then the core can be easily removed, but the area to be adsorbed by the magnet is reduced, making stable holding difficult
Solution Approach 1:
The functions of core removal and magnetic adsorption are segmented into different components. The cylindrical member with its large inner hole handles core removal easily, while the rod member with magnet maintains full adsorption area for stable holding. This segmentation allows both large hole for removal and full magnet area for adsorption to coexist without conflict.
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 adsorption and removal of cores of various sizes and weights, simplifies the device configuration, and reduces the need for frequent replacements, improving machining efficiency and stability.
Implementation Method 1
a core adsorption holding part which adsorbs a core cut out of a workpiece with a magnetic force of a magnet and moves the core by moving the core adsorption holding part relative to the workpiece
Data Source
AI summary
A core moving device is provided, including a core adsorption holding part for adsorbing and moving a core cut out of a workpiece with a magnetic force of a magnet. The core adsorption holding part includes: a rod member, a distal end portion of which is constituted of the magnet; a bottomed cylindrical member which has a bottom surface on a distal end portion side and into which the rod member is inserted from a base end portion side; and a cylindrical member drive part which moves the bottomed cylindrical member forward, wherein the bottomed cylindrical member, on one hand, moves backward to adsorb the core to the magnet and, on the other hand, moves forward to remove the core adsorbed to the magnet.