Double-Sided Grinding Disc Quick-Change System
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Solution Overview
Problem
Existing quick-connect systems for grinding discs are not compatible with double-sided discs, require complex assembly, and are slow to attach and detach, especially when reversing the disc for use on the second side.
Innovation Solution
A grinding disc with a conical through-hole for a standard M8 screw on both sides, allowing quick attachment and reversal, and driver recesses with convex or S-shaped contours for secure and even load distribution, enabling a single screw attachment and improved dynamic stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a quick-connect system with multiple fastening pins and nuts is used, then the attachment speed is improved, but the device complexity increases and compatibility with double-sided discs is lost
Solution Approach 1:
The invention extracts the essential function of quick attachment by removing unnecessary components. Instead of using multiple fastening pins and nuts, the solution uses a single central through-hole with screw thread that allows rapid attachment and detachment while maintaining simplicity and compatibility with double-sided grinding discs.
Solution Approach 2:
The central through-hole with screw thread serves multiple functions: it provides quick attachment, allows reversal of the grinding disc for double-sided use, and maintains compatibility with standard adapters. This universal design replaces complex specialized quick-connect systems.
2Reliability
If a quick-connect system with multiple nuts is used, then the attachment security is improved, but the attachment time increases
Solution Approach 1:
The invention removes the time-consuming step of fitting multiple nuts by extracting this function entirely. The single central through-hole with screw thread provides adequate attachment security while reducing the attachment process to a single fastening operation, eliminating the trade-off between security and speed.
3Loss of time
If off-center fastening pins are used, then the quick-connect function is achieved, but the disc becomes non-reversible
Solution Approach 1:
The invention avoids asymmetric off-center fastening pins that would prevent reversal. Instead, it uses a symmetric central through-hole positioned at the center of the grinding disc, allowing the disc to be freely reversed for double-sided use while maintaining quick-attach functionality.
Solution Approach 2:
The central through-hole design provides universal compatibility with both single-sided and double-sided grinding discs. The symmetric central positioning allows the same attachment mechanism to work regardless of which side of the disc is being used, enabling reversibility and versatility.
Data Source
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AI summary
The invention relates to a quick-change system for a double-sided grinding disc, in which the grinding disc has a disc body which is provided on both sides with at least one separate grinding element. The grinding disc is robust and configured for grinding floors, walls or ceilings by means of a grinding machine. The quick-change system provides a grinding disc having an interface with a central through-hole, in which driver recesses are provided around the through-hole. Furthermore, the quick-change system provides an adapter with a bearing surface and a design which corresponds with the interface of the grinding disc. The quick-change system is advantageous, because only a single screw has to be loosened in order to reverse the double-sided grinding disc. In addition, the quick-change system is robust due to the design of the at least one driver, which is preferably provided with a concave driver profile segment.