Anti-Jamming Mechanical Joint for Industrial Robots
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Solution Overview
Problem
Industrial robot mechanical joints seize easily due to asymmetrical force on the second bearing, leading to inefficiencies in operation.
Innovation Solution
The mechanical joint incorporates an anti-jamming mechanism with a guide member, limiting members, and resilient members between the first and second bearings to prevent jamming by creating a clearance and allowing for resilient resistance, ensuring smooth rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical joint uses a sleeve with first and second bearings to achieve rotational movement, then the rotational function is achieved, but the joint seizes easily due to asymmetrical force on the second bearing
Solution Approach 1:
The patent introduces a resilient member (spring) as an intermediary element between the second bearing and the second axial bracket. This resilient member absorbs asymmetrical forces and prevents direct transmission of jamming loads to the bearing, thereby improving reliability without significantly increasing overall structural complexity
Solution Approach 2:
The patent transforms the static bearing support structure into a dynamic one by incorporating a resilient member that can deform and absorb asymmetric loads. This dynamic element allows the structure to adapt to varying force conditions, preventing seizing while maintaining rotational functionality
2Reliability
If the second axial bracket directly supports the second bearing, then the structure is simple, but asymmetrical force causes the bearing to seize
Solution Approach 1:
The resilient member is pre-installed between the second bearing and the second axial bracket to provide beforehand cushioning. When asymmetrical forces occur, the resilient member compresses to absorb the shock before it can cause the bearing to seize, preventing the harmful effect in advance
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 anti-jamming mechanism effectively prevents seizing by maintaining a clearance between the bearings, ensuring consistent and reliable operation of the mechanical joint.
Implementation Method 1
a resilient member... resiliently resists the second axial bracket and the second bearing
Data Source
AI summary
A mechanical joint includes a first axial bracket, a first bearing, a second bearing, a sleeve, a second axial bracket, and an anti-jamming mechanism. The first axial bracket includes a rotary shaft. The first bearing, the second bearing, and the sleeve sleeve on the rotary shaft of the first axial bracket in turn, the sleeve being sandwiched between the first and second bearings. The second axial bracket is rotatably assembled to the first axial bracket via the first and second bearings. The anti-jamming mechanism is resiliently assembled within the second axial bracket and sleeves on the sleeve. One end of the anti-jamming mechanism resists the second axial bracket and the opposite second bearing.