Magnet Chuck Piston Vibration Damping and Magnetic Flux Enhancement
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Solution Overview
Problem
Magnet chucks with permanent magnets experience vibration and durability issues when the piston reaches displacement end points, leading to unpleasant sounds and potential damage.
Innovation Solution
Incorporating first and second dampers between the piston and partitioning member, and piston and head cover respectively, to absorb vibrations, along with a configuration of N-pole and S-pole pairs on the workpiece magnetic attracting surface to enhance magnetic flux and force, and using a ferromagnetic connecting member as a rotation prevention element to prevent auto switch mistakes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the piston and permanent magnet are displaced together integrally, then the magnet chuck can attract and retain the workpiece effectively, but the piston may abut against the head cover when reaching the top dead center position, causing vibration and reducing durability
Solution Approach 1:
The patent introduces a damper between the piston and head cover that acts as a cushioning element before the piston reaches the head cover. This damper absorbs the impact energy and reduces vibration when the piston arrives at the top dead center position, preventing direct abutment and the associated harmful effects while maintaining the integral displacement mechanism for effective workpiece retention
2Device complexity
If the piston reaches the top dead center position with direct abutment against the head cover, then the structural simplicity is maintained, but the durability of the piston decreases due to repeated impact
Solution Approach 1:
The patent introduces a damper as an intermediary element between the piston and head cover. This damper serves as a mediator that absorbs impact forces during piston displacement, protecting the piston from direct abutment damage while maintaining the overall structural simplicity of the magnet chuck design
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 effectively suppresses vibrations, ensures durability, increases the attractive force, allows for a compact design, and prevents rotation of the permanent magnets, thereby improving the overall performance and longevity of the magnet chuck.
Implementation Method 1
a magnet chuck that attracts and retains a workpiece with a magnetic force of a permanent magnet
Implementation Method 2
a first damper disposed on either one of the partitioning member or the piston and configured to buffer vibrations when the piston abuts against the partitioning member, and a second damper disposed on either one of the piston or the head cover and configured to buffer vibrations when the piston abuts against the head cover
Data Source
AI summary
A magnet chuck includes a piston that is displaced inside a second sliding hole of a cylinder tube. One end surface of the piston abuts against a plate member when the piston reaches one displacement end point, whereas another end surface of the piston abuts against an entry member of a head cover when the piston reaches another displacement end point. At least one, and preferably both, of a first damper on the one end surface, and the second damper on the other end surface are disposed on the plate member.