Oscillating Tool Clamp Release Mechanism for Stuck Accessory Removal
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Solution Overview
Problem
Existing oscillating tools face difficulties in easily removing tool accessories due to them becoming stuck to the spindle, making it challenging to detach and replace them.
Innovation Solution
The oscillating tool design incorporates a rotary lever that, when turned, activates a motion-converting mechanism to release the clamping force and push the tool accessory downward, allowing for easy removal by converting rotational motion into linear motion and utilizing a lock mechanism to secure the clamp shaft, enabling simple unlocking and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tool accessory is firmly pressed against the spindle during oscillating operation, then the processing stability is improved, but the tool accessory becomes stuck to the spindle and difficult to remove
Solution Approach 1:
A pushing-down member is introduced as an intermediary component between the operation member and the tool accessory. This member transmits the pushing force from the rotational motion of the operation member to the tool accessory, enabling easy removal without directly affecting the clamping stability during operation.
Solution Approach 2:
The clamping mechanism transitions from a static clamped state during operation to a dynamic release state when the operation member is rotated. The pushing-down member enables dynamic adjustment of the tool accessory position, allowing it to be pushed down for removal when needed, while maintaining firm clamping during processing.
2Device complexity
If a simple clamp structure is used, then the device complexity is reduced, but the tool accessory cannot be easily removed when stuck
Solution Approach 1:
The clamp structure is enhanced with a dynamic release mechanism. The operation member, when rotated, actuates the pushing-down member which dynamically pushes the tool accessory downward to break the stuck condition, transforming a static clamp into a dynamically controllable system that facilitates easy removal.
Solution Approach 2:
The operation member utilizes rotational periodic action to engage and disengage the clamping mechanism. By rotating the operation member in a periodic manner, the pushing-down member is activated at specific intervals to push the tool accessory down, enabling easy removal without requiring complex manual manipulation.
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
This design facilitates effortless removal and installation of tool accessories by releasing the clamping force and unlocking the clamp shaft with a single operation of the rotary lever, improving user convenience and tool maintenance.
Implementation Method 1
The biasing member is configured to bias the clamp shaft upward relative to the spindle so as to apply to the clamp shaft a clamping force for clamping the tool accessory between the head part and a lower end portion of the spindle.
Implementation Method 2
The motion-converting mechanism is configured to convert rotational motion around the driving axis into linear motion along the driving axis. The pushing-down member is configured to be moved downward so as to push the tool accessory downward when the operation member is turned in a first direction.
Data Source
AI summary
A work tool includes a housing, a spindle, a clamp shaft, a biasing member, an operation member, a motion-converting mechanism and a pushing-down member. The spindle is supported to be rotatable around a driving axis. The clamp shaft is movable in the up-down direction relative to the spindle. The biasing member is configured to bias the clamp shaft upward relative to the spindle so as to apply to the clamp shaft a clamping force for clamping a tool accessory between a head part of the clamp shaft and a lower end portion of the spindle. The motion-converting mechanism is configured to move the pushing-down member in the up-down direction along with turning of the operation member around the driving axis. The pushing-down member is configured to be moved downward so as to push the tool accessory downward when the operation member is turned in a first direction.