Adjustable Angle Grinder Dust Shroud Collar
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Solution Overview
Problem
Existing dust shrouds for angle grinders are not universally adaptable due to varying output shaft housing diameters and heights, leading to increased manufacturing costs and consumer inconvenience, as well as the need for effective dust containment to prevent health risks and tool damage.
Innovation Solution
A universal dust shroud with a radially adjustable mounting collar and integral body, featuring 'Z' or 'S' shaped joints and air passages to accommodate different grinder sizes and ensure proper fit, while promoting airflow to cool bearings and prevent dust contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dust shroud is designed to fit specific output shaft housing dimensions, then it provides secure and proper fit for that particular tool, but it cannot be used with other tools having different housing dimensions
Solution Approach 1:
The mounting collar is designed with radial adjustability, allowing it to expand and contract to accommodate different output shaft housing diameters. This dynamic adjustment mechanism enables a single shroud design to securely fit multiple tool sizes while maintaining proper fit and security for each specific application.
Solution Approach 2:
The dust shroud incorporates universal mounting features including an adjustable mounting collar and interchangeable mounting brackets that can adapt to various output shaft housing dimensions. This universal design allows one shroud model to serve multiple tools across different brands and sizes, eliminating the need for multiple specialized shroud designs.
2Reliability
If multiple different models of dust shrouds are manufactured to fit different tools, then each tool receives a properly fitted shroud, but manufacturing costs and tooling requirements increase significantly
Solution Approach 1:
The dust shroud employs universal mounting collars and interchangeable mounting brackets that can be adjusted or swapped to fit different output shaft housing dimensions. This universality allows a single base design to accommodate multiple tool types, dramatically reducing the number of unique part numbers and mold requirements, thereby lowering manufacturing costs and simplifying production.
Solution Approach 2:
The mounting system is divided into separable components including an adjustable mounting collar and interchangeable mounting brackets. This segmentation allows for modular assembly where the same base shroud can be adapted to different tools by adjusting or replacing minor components, reducing the need to manufacture entirely different shroud models for each tool type.
3Adaptability or versatility
If a dust shroud is designed with complex adjustment mechanisms to fit various tools, then adaptability improves, but device complexity and cost increase
Solution Approach 1:
The mounting collar incorporates simple radial adjustment capability through expandable and contractable elements that can be manually manipulated. This dynamic feature provides adaptability across different tool sizes while maintaining relatively simple construction, avoiding the need for complex mechanical adjustment mechanisms.
Solution Approach 2:
The adjustment mechanism is achieved through segmented, manually adjustable components rather than complex integrated systems. The mounting collar and brackets can be independently adjusted or interchanged, providing versatility while keeping individual components simple and the overall structure manageable.
4Ease of manufacture
If a dust shroud is made inexpensive for hobbyists, then affordability increases, but manufacturing precision and quality may be compromised
Solution Approach 1:
By designing a universal shroud that fits multiple tool types through adjustable and interchangeable components, the manufacturing volume increases while the number of unique part numbers decreases. This approach can lower per-unit manufacturing costs through economies of scale while maintaining adequate precision through standardized adjustment mechanisms rather than custom-machined components for each tool type.
Data Source
AI summary
A universal dust shroud includes a unitary mounting bracket on top of the shroud body. The bracket includes a plurality of collar sections attached to the body via a ‘Z’ shaped joint which allows the collar sections to move radially inwardly and outwardly relative to each other to accommodate different angle grinders. The bracket may include slots formed at the base of the bracket. The slots allow air to flow in through the slots, out past the grinding disk, and to the vacuum port. As such, the slots can aid in cooling the grinder output and bearings, and helps keep dust and debris away from the bearings in order to extend the life of the grinder.