Workpiece Holding Claw Mechanism for Multi-Directional Gripping
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Solution Overview
Problem
Existing workpiece holding devices struggle to adapt to varying workpiece shapes and machining states due to fixed grasping directions, limiting their ability to effectively hold and convey workpieces of different dimensions and configurations.
Innovation Solution
A workpiece holding device with multiple claw portions and a motion conversion mechanism that allows linear motion conversion from one direction to another, enabling flexible grasping directions and reducing interference between claw portions, allowing for parallel and orthogonal grasping configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pairs of workpiece hands with the same grasping direction are provided, then the device can handle different workpiece sizes, but the device cannot adapt to varying workpiece shapes and machining states
Solution Approach 1:
The invention makes the grasping direction dynamic by enabling the workpiece hands to rotate about their longitudinal axes. This allows the grasping direction to be varied depending on the workpiece shape and machining state, transforming a static structure into a dynamic one that can adapt to different conditions without requiring multiple fixed configurations
Solution Approach 2:
The workpiece hands are designed with multi-functionality by incorporating rotation capability about their longitudinal axes. A single pair of workpiece hands can perform multiple grasping functions by changing their orientation, eliminating the need for multiple specialized pairs and simplifying the overall device structure while maintaining versatility
2Adaptability or versatility
If multiple pairs of workpiece hands are provided to grasp different workpieces, then the device can handle various workpiece types, but the number of parts and structural complexity increases
Solution Approach 1:
The invention introduces dynamic reconfiguration capability to the workpiece hands through rotation about their longitudinal axes. This dynamic feature allows a single pair of workpiece hands to assume multiple functional configurations, effectively replacing what would otherwise require multiple static pairs and reducing the total number of parts
Solution Approach 2:
The workpiece hand structure is segmented into rotatable sections that can independently adjust their orientation. This segmentation enables each workpiece hand to be reconfigured for different grasping tasks, providing the versatility of multiple specialized hands while maintaining a unified, compact structure
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 achieves a simple structure with enhanced versatility, allowing it to handle workpieces of varying sizes and shapes by adjusting grasping directions, increasing the maximum weight capacity while maintaining balance and reducing part complexity.
Implementation Method 1
a motion conversion mechanism portion that converts a linear motion associated with movement of the first claw portion into a linear motion in the direction orthogonal to the predetermined plane
Data Source
AI summary
Disclosed herein is a workpiece holding device including: a plurality of first claw portions capable of linearly moving in a direction parallel to a predetermined plane; a second claw portion and a third claw portion disposed to face each other in a direction orthogonal to the predetermined plane; and a motion conversion mechanism portion that converts a linear motion associated with movement of the first claw portion into a linear motion in the direction orthogonal to the predetermined plane, transmits the linear motion to the second claw portion. The first claw portion, the second claw portion, and the third claw portion each have a grasping surface to abut against a workpiece to be held, and the grasping surface of the first claw portion is different in shape from the grasping surfaces of the second claw portion and the third claw portion.