Movable Nut Flange Device for Saw Blade Fastening
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Solution Overview
Problem
Existing saw blade flange devices have a large number of moving parts, making assembly and blade changes complicated, time-consuming, and prone to part loss, especially in construction site environments. Additionally, these devices are easily soiled, leading to unstable fastening of the saw blade.
Innovation Solution
A flange device comprising a centering ring, a nut, and a flange body, where the nut is movable within the flange body, allowing for tool-free and uncomplicated fastening of the saw blade to the drive spindle without the need for special screws. This design reduces the number of parts, making assembly easier and less prone to errors or part loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing flange device designs with multiple moving parts are used, then the fastening mechanism can be complex and adaptable, but assembly and blade changing become complicated and time-consuming
Solution Approach 1:
The flange device is divided into distinct functional segments: a stationary flange body, a movable nut, and a centering ring. This segmentation allows each component to perform its specific function independently, simplifying the overall assembly process while maintaining fastening adaptability.
Solution Approach 2:
The nut is extracted as a separate movable component from the flange body, allowing it to move independently along the central screwing device. This extraction enables the nut to engage and disengage quickly from the screwing device, significantly speeding up blade changing operations.
2Reliability
If existing flange devices with multiple small parts are used, then fastening functionality can be achieved, but parts are easily lost especially in construction site environments
Solution Approach 1:
The centering ring is merged with the flange body through fastening means, creating a more integrated structure. This merging reduces the number of separate small parts that can be lost, while the combined structure maintains the necessary fastening functionality through the coordinated action of the flange body, nut, and centering ring.
3Reliability
If existing flange device components are used, then fastening can be achieved, but components are easily soiled and stable secure fastening is not always ensured
Solution Approach 1:
The nut is extracted as a movable component that can be easily removed and cleaned separately from the flange body. This extraction allows for easier maintenance and cleaning of the fastening components, reducing the impact of soiling on fastening stability in harsh construction site environments.
4Reliability
If traditional fastening methods with special screws are used, then secure fastening can be achieved, but tools and specially trained personnel are required
Solution Approach 1:
The flange device is designed to be self-centering through the centering ring that guides the saw blade onto the central screwing device. This self-service feature eliminates the need for specially trained personnel to manually align and find threaded bores, while maintaining secure fastening through the nut-screwing device connection.
5Manufacturing precision
If saw blades with large diameters are mounted using traditional methods, then proper alignment is critical, but finding and alignment of threaded bore requires special tools and extensive training
Solution Approach 1:
The centering ring performs the alignment function preliminarily by guiding the saw blade onto the central screwing device before fastening occurs. This preliminary centering action eliminates the need for complex alignment procedures and special tools during the fastening process, while ensuring precise positioning for accurate threaded bore engagement.
Data Source
AI summary
A flange device and to a method for fastening a saw blade to a drive spindle of a sawing device. Among other things, the flange device includes a nut, which is arranged in a movable manner in an interior of a flange body, wherein, in a closed state of the flange device, the nut surrounds a central screwing device, which is guided in the drive spindle, for the purpose of fastening. A system for fastening a saw blade to a drive spindle of a sawing device, wherein the system has a flange device, and a sawing device and a central screwing device. The drive spindle of the sawing device can be pressed in the direction of the flange device by a spring, such that, in the closed state, it can be received by an interior of the nut of the flange device.