Grinding Wheel Threaded Ring Nut Assembly
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Solution Overview
Problem
Traditional grinding wheels for lapping machines are cumbersome to assemble and disassemble, prone to wear, and pose safety risks due to accidental detachment during use, especially with quick unlocking mechanisms that have short lifespans and can be lost.
Innovation Solution
An improved grinding wheel design featuring a disk-shaped member with a central through-hole and a threaded ring nut integral to the second face, which is securely attached using adhesive or mechanical interference, allowing for easy assembly and disassembly while preventing accidental detachment by orienting the ring nut away from the machine axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional flange fastening means are used, then the grinding wheel can be securely attached to the rotating shaft, but the assembly and disassembly process becomes cumbersome and time-consuming
Solution Approach 1:
The fastening system is segmented into a threaded ring nut integrated with the grinding wheel and a separate locking mechanism on the rotating shaft. This segmentation allows the grinding wheel to be quickly attached and detached without handling multiple small flange components, reducing assembly time while maintaining secure attachment through the threaded engagement and locking mechanism.
2Reliability
If traditional flanges with locking keys are used, then the grinding wheel can be securely fastened, but the flanges and locking keys are subjected to wear and may be lost
Solution Approach 1:
The threaded ring nut is merged with the grinding wheel as an integrated component rather than a separate flange. This integration eliminates the need for separate locking keys and flanges that are susceptible to wear and loss. The locking mechanism is integrated into the rotating shaft itself, creating a more durable fastening system with fewer wear-prone interfaces.
3Ease of operation
If metal ring nuts are glued to the abrasive disk, then the grinding wheel can be attached to the rotating shaft, but accidental detachment may occur due to anomalous stresses or faulty gluing
Solution Approach 1:
The chemical bonding method (gluing) is replaced with a mechanical threaded fastening system. The threaded ring nut engages with the rotating shaft through threaded engagement, providing a mechanically secure attachment that is resistant to detachment from anomalous stresses. This mechanical connection eliminates the reliability issues associated with adhesive bonding under severe working conditions.
4Ease of operation
If quick unlocking mechanisms are used, then the assembly process is simplified, but the mechanisms have short lifespan due to wear from severe working conditions
Solution Approach 1:
The locking mechanism utilizes the self-tightening property of the threaded ring nut, which automatically tightens against the rotating shaft during the attachment process. This self-service mechanism eliminates the need for complex quick unlocking devices with moving parts that are susceptible to wear. The simple threaded engagement provides both ease of operation and durability under severe working conditions.
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 design simplifies the assembly and disassembly process, enhances safety by preventing accidental detachment, and extends the lifespan of the grinding wheel by reducing wear and handling risks, while maintaining structural integrity and operational efficiency.
Implementation Method 1
The threaded ring nut (7) is applied to the disk-shaped member (2) by interposing a layer of adhesive material
Implementation Method 2
or through mechanical interference between a cylindrical section (9) of the threaded ring nut (7) and the through-hole (4)
Data Source
AI summary
The present invention refers to an improved grinding wheel, comprising an abrasive and/or cutting disk-shaped member that can be associated substantially coaxially with the free end of the rotating shaft of a grinding machine and equipped with at least one substantially central through-hole, with a first face that can be placed, in its assembling configuration, substantially oriented towards the machine and in contact with a machine bearing flange, and with a second face opposite to the first face, that comprises at least one threaded ring nut for attaching to the free end of the rotating shaft that is associated integral and unmovable with the substantially central portion of the second face.