Removable Clamp Shaft Fixing Part for Cleaner Tool Maintenance
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Solution Overview
Problem
Existing work tools face issues with foreign matter entry and complex disassembly for repair due to the design of clamp shafts and lock assemblies, leading to early deterioration and maintenance challenges.
Innovation Solution
A work tool design featuring a clamp shaft with a removable fixing part that uses a spring biasing mechanism and inclined surfaces to securely attach and detach tool accessories from the spindle, preventing foreign matter entry and simplifying maintenance by allowing the fixing part to be removed for repair without disassembling the tool body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clamp shaft is inserted into the spindle and held by a lock assembly during operation, then the tool accessory can be securely fixed, but foreign matters may enter the tool body through the hole of the spindle causing early deterioration of the internal mechanism
Solution Approach 1:
The clamp shaft is divided into two separate components: the clamp shaft body that remains inserted in the spindle during operation, and the fixing part that can be removed for maintenance. This segmentation allows the shaft to maintain secure fixation while enabling access for cleaning and preventing foreign matter accumulation.
Solution Approach 2:
The fixing part is extracted as a separate removable component from the clamp shaft. This extraction allows the fixing part to be removed independently for cleaning and maintenance without affecting the clamp shaft's position in the spindle, thereby preventing foreign matter entry while maintaining operational reliability.
2Ease of operation
If the clamp shaft is pulled out of the spindle at the time of replacement of the tool accessory, then the tool accessory can be replaced, but the tool body needs to be disassembled for repair if any defect occurs in the internal mechanism
Solution Approach 1:
The fixing part is segmented as a separate removable component that can be accessed independently from the tool body. This allows the fixing part to be removed for tool accessory replacement without disassembling the entire tool body, and also enables easy access for repair if internal mechanism defects occur.
Solution Approach 2:
The fixing part is extracted as an independent component that can be removed without disassembling the tool body. This extraction simplifies both tool accessory replacement and repair operations, as the fixing part can be accessed and removed independently while the clamp shaft remains in place.
3Device complexity
If the fixing part is integrally coupled to the shaft part, then the structure is simplified, but the fixing part cannot be removed for repair without disassembling the tool body
Solution Approach 1:
The fixing part is segmented from the shaft part, creating a removable connection rather than an integral one. This segmentation maintains relative structural simplicity while enabling the fixing part to be removed independently for repair without disassembling the tool body.
Solution Approach 2:
The connection between the fixing part and shaft part is made dynamic rather than static. The fixing part can transition between coupled and uncoupled states, allowing it to be removed for repair while maintaining a simple overall structure during normal operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances tool longevity by preventing foreign matter entry and simplifies maintenance by allowing the fixing part to be removed for repair without disassembling the tool body, improving convenience and reducing maintenance complexity.
Implementation Method 1
the clamp shaft is configured to be biased upward and to fix a tool accessory to a lower end portion of the spindle by the fixing part
Data Source
AI summary
A work tool includes a spindle and a clamp shaft. The spindle is supported to be rotatable around a driving axis defining an up-down direction of the work tool. The clamp shaft includes a shaft part and a fixing part. The shaft part extends coaxially with the spindle. The fixing part is coupled to the shaft part on a lower side of the spindle. The clamp shaft is supported to be movable in the up-down direction relative to the spindle. The clamp shaft is configured to be biased upward and to fix the tool accessory to a lower end portion of the spindle by the fixing par. The fixing part is configured to be removable from the shaft part and to be integrally coupled to the shaft part only by moving upward relative to the shaft part.