Robot Hand Edge Clamping for Plate Work Debris and Mark Prevention
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Solution Overview
Problem
In existing robot hand systems, working debris is transferred to unworked plate-shaped works during conveyance, causing defects, and contact marks are left on worked surfaces due to direct contact during handling.
Innovation Solution
A robot hand with suction holding means on one face and outer circumference holding means on the other face, allowing for differential handling of worked and unworked plate-shaped works, preventing debris transfer and contact marks by clamping the edge without touching the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same robot hand is used for both conveying unworked and worked plate-shaped works, then device simplicity is maintained, but working debris is transferred to unworked works causing defects
Solution Approach 1:
The robot hand is divided into two distinct holding mechanisms: suction holding means for unworked works and outer circumference holding means for worked works. This segmentation allows each mechanism to be optimized for its specific function, preventing debris transfer while maintaining overall system simplicity.
Solution Approach 2:
Different parts of the robot hand are assigned different functions based on local requirements. The suction holding means is designed specifically for clean works handling, while the outer circumference holding means is designed for worked works, with each part having specialized characteristics suited to its purpose.
2Ease of operation
If the robot hand directly contacts the surface of worked plate-shaped works for holding, then ease of operation is improved, but contact marks are left on the workpiece surfaces
Solution Approach 1:
The outer circumference holding means acts as an intermediary between the robot hand and the worked workpiece. Instead of direct surface contact, the holding means engages with the outer circumferential edge, serving as a mediator that enables handling without compromising surface quality.
Solution Approach 2:
The traditional mechanical surface-contact holding method is replaced with a non-contact suction holding system for unworked works, and an edge-clamping mechanism for worked works. This substitution eliminates the mechanical contact that causes surface defects while maintaining effective handling capability.
3Reliability
If cleaning means is used to clean worked works before handling, then debris removal is improved, but contact marks are still left on the workpiece surfaces
Solution Approach 1:
The cleaning process is performed as a preliminary action before the worked works are placed in the outer circumference holding means. This sequence ensures that debris is removed first, then the cleaned works are handled without surface contact, preserving both cleanliness and surface quality.
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
Prevents working debris from being deposited on unworked plate-shaped works and avoids contact marks on worked surfaces, ensuring accurate and defect-free processing.
Implementation Method 1
suction holding means for holding a plate-shaped work on one face side by suction
Data Source
AI summary
A robot hand having a suction holding unit on one face side holds a plate-shaped work by suction. An outer circumferential edge of the plate-shaped work is held, without contact with a surface of the plate-shaped work, by an outer circumference holding unit provided on the other face side. The robot hand can be used to hold the plate-shaped work yet to be worked by the suction holding unit, and to hold the plate-shaped work having been worked by the outer circumference holding unit. This prevents working debris from being deposited on the plate-shaped work yet to be worked and prevents defective working from occurring. In addition, since the plate-shaped work having been worked is held by the outer circumference holding unit, the robot hand does not make contact with surfaces of the worked plate-shaped work, and, accordingly, no contact marks are formed on the surfaces of the work.