Quick Clamping Mechanism With Self-Securing Tool Fixing
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Solution Overview
Problem
Existing quick-change clamping devices for power tools require tools for fixing insert tools, are prone to accidental closure, and lack efficient force transmission, leading to inefficiency and potential safety hazards.
Innovation Solution
A quick-change clamping device with a securing unit that secures the fixing element against movement, a cam mechanism for force conversion, and a compact design allowing tool-free operation, ensuring secure and efficient attachment and detachment of insert tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a quick-change clamping device is designed to allow tool-free fixing, then ease of operation is improved, but reliability may worsen due to risk of accidental closure
Solution Approach 1:
The clamping device employs dynamic elements including a movable fixing element that can shift position, a resilient arm that flexes during operation, and a spring-loaded securing element that automatically engages. These dynamic components enable the device to adapt during tool-free operation while maintaining secure locking through automatic engagement mechanisms.
Solution Approach 2:
The device performs self-securing functions through automatic engagement of the securing element with the fixing element, self-adjusting of the resilient arm during clamping, and self-locking through the cam mechanism. This eliminates the need for external tools while ensuring reliable fixation through inherent self-regulating mechanisms.
2Ease of operation
If the fixing element is made movable for easy adjustment, then ease of operation is improved, but device complexity increases due to additional securing mechanisms
Solution Approach 1:
The securing element combines multiple functions within a single component: it acts as a lock, a position indicator, and an engagement mechanism. The resilient arm integrates both the clamping force application and the securing function, eliminating the need for separate locking mechanisms and reducing overall device complexity.
Solution Approach 2:
The fixing element serves multiple purposes: it provides the movable clamping surface, engages with the securing element for locking, and interacts with the resilient arm for force application. This multi-functionality reduces the number of separate components needed while maintaining ease of operation.
3Productivity
If a cam mechanism is added for force conversion, then productivity is improved through efficient force transmission, but device complexity increases
Solution Approach 1:
The cam mechanism acts as an intermediary between the resilient arm's motion and the fixing element's positioning, converting rotational movement into linear clamping force. This intermediary mechanism efficiently transmits force while maintaining compact dimensions and avoiding the need for larger, more complex force multiplication systems.
Data Source
AI summary
A quick clamping device for arranging at least one application tool on a power tool, in particular on an angle grinder, includes at least one output unit for moving the application tool about an output axis of the output unit, and at least one fixing unit having at least one movably mounted fixing element that is mounted, in particular in a non-removable manner, on the output unit, at least for axially fixing the application tool to the output unit. The quick clamping device has at least one securing unit, which has at least one, in particular movably mounted, securing element that is intended to secure the fixing element, which is mounted so as to be movable relative to the output unit at least about the output axis, so as to prevent the fixing element from moving about the output axis.