Grinding Disc Fastening Sleeve With Intermediary Friction Lock
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fastening devices for attaching grinding and polishing discs to angle grinders often fail to provide a secure and durable frictional connection, leading to potential detachment during use.
Innovation Solution
A fastening device with an intermediate element between the tensioning sleeve and the grinding/polishing disc, utilizing a deformable material and complementary cone-shaped contact surfaces, enhances the frictional connection, ensuring a robust hold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fastening device uses a tensioning sleeve to press the grinding disc against a carrier plate, then the grinding disc can be secured, but the frictional connection is insufficient and leads to potential detachment during use
Solution Approach 1:
An intermediate element is introduced between the tensioning sleeve and the grinding disc to strengthen the frictional connection. This intermediary component increases the contact surface area and friction force, preventing detachment during use while maintaining the overall simplicity of the fastening device structure.
2Reliability
If an intermediate element is added to strengthen the frictional connection, then the hold on the grinding disc is improved, but the device complexity increases
Solution Approach 1:
The intermediate element serves as a mediator that significantly enhances the frictional connection strength. By placing this element between the tensioning sleeve and grinding disc, the patent achieves reliable holding force without requiring multiple separate components or complex assembly mechanisms.
Solution Approach 2:
The intermediate element is designed with a flexible, deformable structure that can conform to the grinding disc surface. This flexibility allows the element to maintain strong frictional contact while being a simple, thin component that does not substantially increase device complexity.
3Reliability
If the intermediate element is made deformable to adapt to unevenness in the grinding disc, then the frictional lock is reinforced, but the manufacturing precision requirements increase
Solution Approach 1:
The intermediate element is made from a deformable material that can change its physical state or shape in response to contact with the grinding disc. This parameter change allows the element to adapt to surface unevenness and create strong frictional contact without requiring high manufacturing precision for the element itself.
Solution Approach 2:
The intermediate element utilizes composite material properties, combining flexibility for adaptation with sufficient structural integrity. This allows the element to deform and conform to the grinding disc surface while maintaining the frictional lock strength, reducing the need for high manufacturing precision.
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 provides a secure, durable, and tool-free quick replacement mechanism for grinding and polishing discs, maintaining a stable connection during operation.
Implementation Method 1
a tensioning sleeve for inserting into the through-hole and for establishing a frictional connection between the grinding and/or polishing disc and the carrier plate
Implementation Method 2
The intermediate element may be provided to partially deflect and/or deform the grinding and/or polishing disc
Implementation Method 3
utilizing a deformable material and complementary cone-shaped contact surfaces, enhances the frictional connection
Data Source
AI summary
A fastening device for fastening a grinding and/or polishing disc to a tool holder of an electric tool, in particular a tool holder of an angle grinder, has at least one carrier plate for holding and/or supporting the grinding and/or polishing disc, and has a through-hole, and further has a tensioning sleeve for insertion into the through-hole and for establishing a frictional connection between the grinding and/or polishing disc and the carrier plate. The fastening device also has at least one intermediate element for disposal between the tensioning sleeve and the grinding and/or polishing disc to reinforce the frictional connection.