Rotary Cutting Tool Interchangeable Body Locking Mechanism
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Solution Overview
Problem
Existing rotary cutting tools lack a secure and efficient mechanism for attaching and detaching cutting bodies of different sizes, which limits their versatility and ease of use when cutting holes of varying diameters.
Innovation Solution
A rotary cutting tool design featuring a connecting structure with locking protrusions and slots, along with a locking member that allows for secure attachment and detachment of cutting bodies, enabling the use of multiple cutting bodies of different sizes and orientations to cut holes of various diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secure locking mechanism is implemented to attach cutting bodies, then the reliability of cutting body attachment is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism is divided into separate functional components: locking protrusions on the cutting body, corresponding slots on the connecting structure, and a locking member with biasing element. This segmentation allows each component to perform its specific function while maintaining overall system reliability without excessive complexity.
Solution Approach 2:
The biasing element automatically engages the locking protrusions with the slots when the cutting body is inserted, providing self-locking functionality. The mechanism self-regulates through spring pressure to maintain secure attachment without requiring additional actuation or complex control systems.
2Adaptability or versatility
If multiple cutting bodies of different sizes are supported, then the adaptability of the tool is improved, but the device complexity increases
Solution Approach 1:
The connecting structure with standardized locking protrusions and slots serves multiple functions: it secures cutting bodies of different diameters, maintains alignment during operation, and enables quick interchangeability. This universal interface design allows one connecting structure to accommodate various cutting body sizes without requiring size-specific components.
Solution Approach 2:
The locking mechanism operates in the axial dimension with protrusions extending parallel to the cutting axis, engaging with slots in the connecting structure. This axial locking approach, rather than radial or circumferential mechanisms, simplifies the design while enabling secure attachment of cutting bodies with different radial dimensions.
3Ease of operation
If a locking member with biasing element is used, then the ease of operation for attaching and detaching cutting bodies is improved, but the device complexity increases
Solution Approach 1:
The locking member incorporates a biasing element that provides dynamic, spring-loaded engagement pressure. This allows the locking mechanism to automatically adjust to variations in cutting body insertion and maintain optimal locking force throughout operation, improving ease of use while the self-regulating spring mechanism manages the added structural complexity.
Data Source
AI summary
A cutting tool includes a cutting body and a connecting structure configured to support the cutting body. The cutting body can include teeth positioned circumferentially around and extending outwardly from the cutting body. The connecting structure can include a drive shaft for drivingly connecting the cutting tool to a power tool. The connecting structure can also include a connecting plate and a locking member for securing the cutting body to the connecting structure. In some embodiments, the locking member is movable relative to the drive shaft between a locked position, in which the locking member secures the cutting body to the connecting structure, and an unlocked position, in which the cutting body is removable from the connecting structure.