Electromagnetic Setting Tool Drive With Dual Coils for Stronger Repulsion
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Solution Overview
Problem
Existing setting tools for driving fasteners into substrates lack efficiency and quality in their operation, particularly in generating sufficient repulsive forces to effectively move fastening elements into the ground.
Innovation Solution
A hand-held setting device with a drive system comprising a stator coil and a piston coil, where the stator coil and piston coil are connected to capacitors that discharge electrical current to generate opposing magnetic fields, with the piston coil having fewer turns but higher current intensity than the stator coil, ensuring efficient acceleration of the working piston relative to the stator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a single coil system is used to drive the working piston, then the device structure is simple, but the repulsive force generated is insufficient for effective fastener penetration
Solution Approach 1:
The single coil system is divided into two separate coil systems: a stator coil system fixed on the stator and a piston coil system arranged on the working piston. This segmentation allows each coil to generate magnetic fields that interact to produce stronger repulsive forces, effectively solving the insufficient force problem while maintaining reasonable structural complexity
Solution Approach 2:
The stator coil system and piston coil system are combined to work together, with both coils generating magnetic fields that interact to produce repulsive forces. The capacitors are also combined to discharge current through both coils simultaneously, creating a synergistic effect that generates sufficient repulsive force for fastener penetration
2Force
If high current intensity is applied to generate strong magnetic fields, then the repulsive force is sufficient, but energy consumption increases
Solution Approach 1:
The capacitors are pre-charged before operation, storing electrical energy in advance. During operation, the capacitors rapidly discharge current through the coils, providing the high current intensity needed for strong magnetic fields and sufficient repulsive force without requiring continuous high power input, thus reducing overall energy consumption
Solution Approach 2:
The drive system operates in periodic cycles: capacitors charge during idle periods and discharge during operation periods. This periodic action allows the system to deliver high power impulses when needed while consuming less energy during charging intervals, optimizing the balance between repulsive force generation and energy consumption
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 device achieves high efficiency and quality in driving fasteners into substrates by generating strong repulsive forces, ensuring effective penetration and reduced energy wastage through the controlled discharge of capacitors and opposing magnetic fields.
Implementation Method 1
the stator coil is electrically connectable to the stator coil capacitor in order to be traversed by electric current of a second current intensity I2 during a rapid discharge of the stator coil capacitor, in order to generate a magnetic field which accelerates, preferably repels, the working piston relative to the stator
Implementation Method 2
the piston coil is electrically connectable to the piston coil capacitor in order to be traversed by electric current of a first current intensity I1 during a rapid discharge of the piston coil capacitor, in order to generate a magnetic field which accelerates the working piston relative to the stator, preferentially repels
Data Source
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AI summary
The invention relates to a working tool for working an underlying surface, in particular a hand-held working tool, in particular a setting tool for driving securing elements into the underlying surface, having a stator and a working piston, which is designed to move relative to the stator along a working axis, and additionally having a drive, which is designed to drive the working piston from a starting position onto the underlying surface along the working axis. The drive has a stator coil, which is arranged on the stator, said drive being designed to supply the stator coil with an electric current with a first current strength I1 in order to generate a magnetic field which accelerates the working piston relative to the stator and pushes the working piston away in particular, and the drive has a piston coil, which is arranged on the working piston, said drive being designed to supply the piston coil with an electric current with a second current strength I2 in order to generate a magnetic field which accelerates the working piston relative to the stator and pushes the stator away in particular, wherein the second current I2 strength is lower than the first current strength I1.