Movable-Pad Extraction Tool for Even Disc Holder Removal
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Solution Overview
Problem
Existing extraction tools are ineffective for removing disc-shaped objects with four, five, or six positioning structures from a shaft lever, as they lead to uneven stress, deflection, and potential deformation due to mismatched through holes and positioning structures, resulting in interference and incomplete removal.
Innovation Solution
An extraction tool comprising a coupling disc with radially distributed through grooves and movably arranged pads, allowing for even alignment and support of positioning structures, enabling balanced force application and reliable removal of disc-shaped objects with varying specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a disc body with fixed through holes is used to coordinate with positioning structures, then the puller can remove disc holders with matching specifications, but it cannot effectively remove disc holders with different quantities of positioning structures (four, five, or six)
Solution Approach 1:
The coupling disc employs movable pads that can slide along radial guiding grooves instead of fixed through holes. This dynamic configuration allows the pads to automatically adjust their positions to align with four, five, or six positioning structures on different disc holders, enabling the same tool to reliably remove various disc specifications without deformation or interference
Solution Approach 2:
The coupling disc is segmented into multiple independent pads rather than using a single rigid structure with fixed holes. Each pad can move independently along its guiding groove, allowing the system to adapt to different numbers of positioning structures while maintaining even force distribution and preventing disc holder deformation
2Adaptability or versatility
If through holes are connected when coordinating with positioning structures, then the disc body can accommodate multiple positioning structure quantities, but the bolt head or nut fails to prop the disc body effectively causing uneven stress and deflection
Solution Approach 1:
The movable pads sliding along radial guiding grooves dynamically adjust to align with positioning structures, ensuring that each pad independently bears load without stress concentration. This eliminates the connected through hole problem by providing separate, adjustable support points that distribute stress evenly across the disc holder
Solution Approach 2:
The movable pads act as intermediaries between the coupling disc and positioning structures. These pads can move to optimally position themselves for force transmission, ensuring effective propelling action without the stress concentration and deflection problems caused by fixed connected through holes
3Productivity
If the disc body is stressed unevenly during push rod operation, then the disc holder can be removed, but the actuation becomes deflected and may cause interference between shaft hole and shaft lever
Solution Approach 1:
The movable pads that slide along guiding grooves dynamically position themselves to align with positioning structures, ensuring uniform force distribution during extraction. This prevents deflection of the disc holder and eliminates interference between the shaft hole and shaft lever, maintaining manufacturing precision while achieving effective removal
Solution Approach 2:
The system changes the positional parameters of the pads during operation. By allowing pads to move along radial guiding grooves, their positions are dynamically adjusted to match the specific configuration of positioning structures, ensuring even stress distribution and preventing deflection that would compromise shaft component geometry
Data Source
AI summary
An extraction tool includes a coupling disc, an operating rod and two pads, wherein the coupling disc is penetrated by an assembly hole, the operating rod is provided in the assembly hole, and the pads can be movably arranged on the coupling disc. The coupling disc is penetrated by four first through grooves, two second through grooves, two third through grooves and two fourth through grooves. Each of the pads respectively covers one of the fourth through grooves, and the pads are each penetrated by one fifth through groove, each fifth through groove communicates with one of the fourth through grooves, and one side of each fifth through groove forms an alignment relationship with one of two sides of each of the fourth through grooves.