Spray Tip Alignment Tool for Robotic Arm Band Accuracy
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Solution Overview
Problem
Misalignment of spraying end effectors relative to the distal end of a robotic arm leads to unintended deviations and offsets in the sprayed material, resulting in inconsistent and inaccurate application, which affects the quality of surface finishing tasks.
Innovation Solution
An alignment tool is provided to maintain fixed alignment of the rotatable spray tip and spray guard relative to the robotic arm, minimizing misalignment in the pitch and roll axes, ensuring consistent and accurate spraying by preventing movement of the spray tip in these axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the spray tip and spray guard are made rotatable to allow adjustment, then adaptability is improved, but misalignment and positioning accuracy deteriorate
Solution Approach 1:
The alignment tool is used before the spraying operation to pre-align the spray tip and spray guard to the robotic arm's center line. The tool includes alignment features that engage with the spray components and provide visual or physical indicators to ensure proper alignment is established before spraying begins, thereby maintaining accuracy despite the rotatable design
2Ease of operation
If the spray tip is made movable for adjustment purposes, then ease of operation is improved, but alignment stability deteriorates
Solution Approach 1:
The system allows the spray tip to be movable during the alignment and setup phase for ease of adjustment, but once aligned, the alignment tool provides stabilizing features such as clamps, locks, or positioning mechanisms that fix the spray tip in its correct position. This dynamic approach allows the system to transition from a movable state (for adjustment) to a stable state (for operation), resolving the contradiction between ease of operation and alignment stability
3Device complexity
If manual alignment methods are used, then device complexity is reduced, but measurement precision and alignment accuracy deteriorate
Solution Approach 1:
The alignment tool serves as an intermediary device between the spray tip/spray guard and the robotic arm. It includes physical alignment features such as guides, fixtures, or reference markers that mediate the alignment process, providing precise geometric relationships without requiring complex measurement instruments or sophisticated alignment procedures. This intermediary tool maintains simplicity while achieving high alignment precision
Data Source
AI summary
Misalignment in a spraying end effector relative to a distal end of a robotic arm can cause unintended deviations to a width of sprayed band of material and/or cause an untended offset of the sprayed band of material relative to the intended center line. To address misalignment, an alignment tool can be provided to ensure that a rotatable spray tip and a rotatable spray guard of the spraying end effector maintain a fixed alignment relative to the distal end of the robotic arm. Misalignment in the pitch and roll axis can be effectively reduced or minimized by the alignment tool, so that the resulting sprayed band of material can be consistent over many sprayed bands. Also, the sprayed bands can have an accurate or intended width without a significant offset from the intended center line.