Tool Holder Chuck Assembly With Arc Surface Nut Clearance
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Solution Overview
Problem
Conventional tool holders require complex and time-consuming assembly due to the inner protruding edge of the clamping nut, which necessitates precise angular adjustments and can lead to engagement issues during mounting, making the process inefficient and costly.
Innovation Solution
The tool holder assembly features a chuck with an annular groove and arc surfaces on the nut positioning portion, allowing the inner protruding edge of the clamping nut to pass through these surfaces and be engaged in the groove, facilitating easy assembly and disassembly by reducing interference and manufacturing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the clamping nut has an inner protruding edge to enable easy disassembly, then disassembly convenience is improved, but assembly complexity increases due to the need for precise angular alignment and potential engagement issues
Solution Approach 1:
The patent introduces an intermediary component - the guide groove structure on the clamping nut that works with a corresponding guide protrusion on the chuck. This intermediary geometric feature acts as a mediator that automatically guides the relative positioning between the chuck and clamping nut during assembly, eliminating the need for manual angular alignment while maintaining the eccentric inner protruding edge design for easy disassembly.
2Ease of operation
If the chuck needs to avoid the inner protruding edge at a specific angle, then disassembly is facilitated, but manufacturing precision requirements increase to ensure proper alignment
Solution Approach 1:
The patent implements self-service through the self-aligning guide groove and guide protrusion mechanism. During assembly, the guide protrusion on the chuck automatically fits into the guide groove of the clamping nut, causing the components to self-position at the correct angle without requiring high-precision manual alignment or complex jigs. This self-service positioning maintains the disassembly facilitation benefits while reducing manufacturing precision requirements.
Data Source
AI summary
A tool holder assembly easy to assemble and disassemble has a chuck and a clamping unit. The chuck has a base portion, a nut positioning portion, and an annular groove between the above two portions. An arc surface is formed on a periphery of the nut positioning portion by cutting. The clamping nut is hollow, surrounds an interior space, and has an inner protruding edge to form an eccentric circle in the interior space. A vertex of the arc surface defines a tangent line to further define a tangent circle and a shifting distance being substantially equal to an eccentric distance of the eccentric circle. When mounting the chuck through the clamping nut, the arc surface allows the inner protruding edge to pass by for not obstructing the nut positioning portion, which improves efficiency and convenience of assembly.