Robot Leading Arm Anti-Slip Surface for Accurate Direct Teaching
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Solution Overview
Problem
Accurate movement of the leading arm during direct teaching in industrial robots is difficult due to slipping, leading to inaccurate teaching and reduced efficiency.
Innovation Solution
The leading arm of the robot is equipped with a cylindrical outer surface featuring an anti-slip structure, such as a knurled pattern, to prevent slipping and facilitate accurate movement during direct teaching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the leading arm has a smooth cylindrical outer surface, then the user safety is improved (reduced contact damage), but the ease of operation deteriorates (hand slips off during direct teaching)
Solution Approach 1:
The patent applies local quality by adding an anti-slip structure (such as knurling or ridges) only at specific locations on the leading arm's cylindrical surface, rather than making the entire surface rough. This localized modification provides enhanced grip stability where the user's hand contacts the arm, while the rest of the smooth cylindrical surface maintains its safety advantage of reduced contact damage potential.
2Ease of manufacture
If the leading arm has a smooth cylindrical outer surface, then the manufacturing simplicity is improved, but the teaching precision deteriorates (difficult to move accurately due to slippage)
Solution Approach 1:
The anti-slip structure is implemented as a localized feature on the leading arm, such as knurling patterns or circumferential ridges at specific positions. This localized approach maintains the overall simplicity of the cylindrical arm design while providing the necessary friction enhancement only where user contact occurs, thus preserving manufacturing simplicity while improving teaching precision.
3Ease of operation
If the user must watch the leading arm while grasping it, then the grip stability is improved (can see where to grip), but the teaching efficiency deteriorates (cannot look at hand or workpiece)
Solution Approach 1:
The anti-slip structure creates tactile distinguishability through its unique surface texture (such as knurling patterns or ridges), allowing the user to identify the correct grip location by touch alone. This tactile feedback mechanism eliminates the need for visual confirmation, enabling the user to maintain accurate grip while looking at the hand or workpiece, thereby improving teaching efficiency.
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-slip structure allows for accurate and efficient direct teaching by preventing hand slippage and enabling the user to confirm the grip by feel, reducing the need for post-teaching fine-tuning and minimizing accidental contact with connected components.
Implementation Method 1
an anti-slip structure which resists to slipping which may occur during operations in the direct teaching of the robot, is provided as a predetermined structure provided along the circumferential direction on the outer surface of the cylindrical shape
Data Source
AI summary
A robot is provided, for example, as an industrial robot having a plurality of arms every mutually adjacent two of which are rotatably connected by an axis. The arms include a leading arm having a cylindrical outer surface. An anti-slip structure is formed on and around the cylindrical outer surface in a circumferential direction thereof. The anti-slip structure serves as a slip-resistance structure, that is, a surface structure for preventing or reducing a user's hand from slipping off therefrom.