Rotary Tool Chuck Coupling with Pentagonal Profile for Re-Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rotary tool systems, such as grinders, face challenges in maintaining optimal balance and correct re-mounting due to slight variations in configuration after use, requiring frequent disassembly and reassembly for different work operations, leading to potential errors and inefficiencies.
Innovation Solution
A chuck and rotary tool apparatus featuring a central through-hole with a pentagonal profiled section for axially slidable and single angular orientation coupling, allowing rapid and error-free re-mounting of the grinder on the chuck.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a grinder is frequently demounted and remounted for different work operations, then adaptability to different tasks is improved, but the balance and positioning accuracy deteriorate due to slight variations in configuration after each use
Solution Approach 1:
The invention employs asymmetric keying features (keyways and keys) with specific geometric profiles that prevent rotational misalignment. The asymmetric design ensures that the grinder can only be mounted in the correct angular orientation, eliminating positioning errors that would occur with symmetric coupling mechanisms. This allows frequent tool changes while maintaining consistent balance and positioning accuracy.
Solution Approach 2:
The coupling mechanism incorporates pre-configured keying features and guiding surfaces that automatically align the grinder with the chuck during mounting. The preliminary geometric configuration of the keyways and keys ensures correct angular orientation is achieved automatically upon insertion, eliminating the need for manual alignment or recalibration after each tool change.
2Ease of manufacture
If traditional coupling mechanisms are used, then ease of manufacture is improved, but the time required for tool changes and recalibration increases
Solution Approach 1:
The coupling mechanism is segmented into distinct functional elements: keyways for angular orientation, axial guiding surfaces for positioning, and flange interfaces for mechanical coupling. This segmentation allows each feature to perform its specific function efficiently, enabling rapid tool changes while maintaining manufacturing simplicity through standardized, modular components.
Solution Approach 2:
The keying and guiding features are designed to automatically perform alignment and positioning functions during the mounting process. The grinder's key and the chuck's keyway self-align through geometric constraints, eliminating the need for manual adjustment or recalibration operations, thereby reducing tool change time without increasing manufacturing complexity.
Data Source
Figure 1
AI summary
An apparatus for the coupling of a rotary tool (1) to a chuck (2) in which the chuck (2) comprises a central body (22), suitable for allowing the said rotary tool (1) to be coupled thereon by means of a central through-hole (10) afforded thereby in such a way that a first flank (11) of the rotary tool (1) is maintained in contact with a striking surface (21) solidly constrained to the said chuck (2) or to the said central body (22). The blocking of the tool (1) on the chuck is realised by a moveable flange (3) suitable for being pressed against a second flank (12) of the rotary tool (1) opposite the first flank. A portion (23) of the central body (22) exhibits a shaped straight section on which the central through-hole (10) of the rotary tool (1) can be coupled, which central hole is also profiled. The profiling of the portion (23) of the central body (22) and of the central through-hole (10) of the rotary tool (1) are conformed such as to enable a mutual axially sliding coupling with a single-directional reciprocal angular orientation.