Centering Chuck Assembly With Jaw Plate Axial Stop
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Solution Overview
Problem
Existing tool chucks struggle to efficiently center and secure tool bits of varying sizes, leading to potential misalignment and inefficiencies during power tool operations.
Innovation Solution
A chuck assembly with a rotatable chuck body, multiple jaws with mating features, and a plate with notches that receive grooves from the jaws, allowing for precise axial and radial alignment of tool bits and providing an axial stop to prevent over-insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional chucks are used to secure tool bits, then the tool bit can be held, but misalignment and centering issues occur leading to inefficiencies
Solution Approach 1:
The chuck assembly performs preliminary centering action before the tool bit is fully secured. The jaws are pre-positioned and the chuck body is designed to automatically center the tool bit during the tightening process, ensuring proper alignment before operational forces are applied.
Solution Approach 2:
The patent replaces traditional mechanical centering mechanisms with a simplified system where the chuck body geometry and jaw arrangement inherently provide centering functionality. The rotation and tightening mechanism itself facilitates centering without requiring separate complex centering devices.
2Adaptability or versatility
If chucks are designed to accommodate tool bits of varying sizes, then versatility is improved, but alignment accuracy deteriorates
Solution Approach 1:
The chuck assembly employs dynamic jaws that can adjust their position and orientation during tightening. The jaws are designed to move radially and can be positioned at different angles, allowing them to adapt to various tool bit sizes while maintaining proper alignment through the centering action during the tightening process.
Solution Approach 2:
The chuck body and jaws are designed with adjustable parameters including jaw position, jaw angle, and tightening force. These parameters can be changed to accommodate different tool bit sizes while the inherent centering geometry ensures alignment accuracy is maintained across the range of sizes.
3Reliability
If existing chucks secure tool bits, then the tool bit is held, but misalignment can occur causing potential damage
Solution Approach 1:
The chuck performs preliminary centering and alignment actions before the tool bit is fully secured under operational loads. The centering grooves and jaw arrangement ensure proper alignment is established during the tightening phase, preventing misalignment damage during operation.
Solution Approach 2:
The chuck design incorporates protective features that prevent misalignment damage before it can occur. The centering geometry and jaw configuration provide a cushioning effect that absorbs and corrects minor misalignments during insertion and tightening, preventing harmful forces from developing during operation.
Data Source
AI summary
A chuck assembly for use with a rotary power tool. The chuck assembly includes a chuck body, a plurality of jaws, and a plate. The chuck body has a plurality of passageways, a plurality of jaws, and a plate. The plurality of jaws are each received within one of the plurality of passageways for co-rotation with the chuck body about the axis, each of the jaws comprises a groove extending in a direction perpendicular to the axis and along a first radial side, an inner side, and a second radial side of the jaw. The plate comprises a plurality of notches, each notch receiving the groove of one of the plurality of jaws to couple the plate to the plurality of jaws, the plate moving with the plurality of jaws to set an axial stop for the tool bit.