Cam Actuating Mechanism for Vibration-Resistant Protective Cover Mounting
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Solution Overview
Problem
Conventional supporting devices for protective covers on cutting machines often detach during vibrations or loosen over time, failing to securely maintain the cover in position during operation.
Innovation Solution
A supporting device with a mount unit, a tightening bolt, a supporting frame, and a cam actuating mechanism that includes a cam follower surface and a biasing member to ensure firm positioning and easy operation between a position of use and a retreat position, utilizing a guiding slot and retaining pins for secure retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional cam piece mechanism is used to tighten the supporting frame, then the operation is simple and quick, but the supporting frame may detach during vibration
Solution Approach 1:
The cam piece is designed with an asymmetric cam surface that transforms rotational motion into axial pressing force. The cam surface includes a pressing portion that contacts the tightening plate, and when rotated, this pressing portion moves axially to press the tightening plate against the fixed mount, creating a dynamic tightening mechanism that maintains firmness during vibration
Solution Approach 2:
The cam piece includes a pressing portion that is preliminarily positioned to contact the tightening plate. Before the tightening operation is completed, the cam surface is designed to gradually increase the pressing force, ensuring that the supporting frame is firmly secured against the fixed mount in advance, preventing detachment during subsequent vibrations
2Ease of operation
If a tightening bolt with arcuate slot is used, then the supporting frame can be tightened, but it may loosen after long-term use
Solution Approach 1:
The cam piece mechanism replaces the static tightening bolt with a dynamic cam surface that maintains constant pressing force. The cam surface is designed to convert rotational motion into sustained axial force, ensuring that the tightening plate remains firmly pressed against the fixed mount throughout long-term use, preventing loosening
Solution Approach 2:
The cam piece includes a pressing portion that preliminarily counteracts the loosening force by maintaining continuous pressing force on the tightening plate. The cam surface geometry is designed to generate sufficient axial force to prevent the supporting frame from loosening during long-term operation, effectively countering the loosening tendency before it occurs
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 device securely holds a protective cover in place, resisting vibrations and allowing easy transition between operational and retreat positions, ensuring reliable protection and ease of use.
Implementation Method 1
a biasing member disposed on the tightening bolt to apply an elastic force to the tightening bolt
Implementation Method 2
a cam actuating mechanism including a cam piece with a cam surface having a pressing portion to contact a tightening plate
Implementation Method 3
the cam surface has a pressing portion to contact the tightening plate, and the pressing portion is to press the tightening plate towards the fixed mount when the cam actuating mechanism is rotated
Data Source
AI summary
A supporting device is adapted for mounting a protective cover to shield a cutting blade of a cutting machine, and includes a mount unit with a proximate tightening surface, a tightening bolt passing through the proximate tightening surface, a supporting frame adapted for holding the protective cover and having a guiding slot for passage of the tightening bolt so as to be movable between a position of use and a retreat position, a movable tightening member with a distal tightening surface and a cam follower surface, a cam actuating member having a cam surface mating with the cam follower surface and turnable to tighten or loosen the supporting frame, and a biasing member disposed to keep the actuating body in a tightening position.