Core Grasping Apparatus Turning Moment Suppression
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Solution Overview
Problem
The existing methods for disposing casting cores inside dies lack the necessary accuracy, leading to inclining of the cores due to the long distance between the center of gravity and the grasping position, resulting in turning moments that cause instability during handling.
Innovation Solution
A core grasping apparatus is designed with expandable and contractible holding devices that apply forces to suppress turning moments by contacting the core print at specific points, utilizing multiple holding parts and a turning suppression part to stabilize the core during grasping, without increasing the number of holding devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the core print is grasped at one end to hold the core, then the core can be held by the core conveyor, but the long distance between the center of gravity and grasping position causes a turning moment that makes the core incline
Solution Approach 1:
The holding function is segmented into multiple independent holding parts (first holding part, second holding part, and turning suppression part) that can be activated separately. The first and second holding parts grasp the core print at opposite ends, while the turning suppression part independently counteracts the turning moment by contacting the core main body, dividing the stabilization function into distinct segments.
Solution Approach 2:
The turning suppression part acts as an intermediary element between the core conveyor and the core main body. It transfers the counteracting force from the holding device to the core main body at a strategically positioned contact point, mediating the interaction to suppress the turning moment without requiring direct grasping of the core print alone.
2Stability of the object's composition
If multiple holding devices are added to suppress turning moments, then core stability improves, but device complexity increases
Solution Approach 1:
The turning suppression part is merged with the existing holding device structure rather than being a completely separate device. It is integrated into the core conveyor system, sharing the same support and control mechanisms, which combines the grasping and turning suppression functions into a unified device, reducing overall complexity.
Solution Approach 2:
The holding device is designed with multi-functionality: the first and second holding parts perform the primary grasping function, while the turning suppression part performs the turning moment counteraction. This universal design allows a single holding device to perform multiple functions (grasping and stabilization) without requiring entirely separate devices for each function.
Data Source
AI summary
A core grasping apparatus according to the present disclosure grasps a core including a core main body and a core print provided at one end of the core main body. The core grasping apparatus includes: a first holding device and a second holding device respectively including expandable and contractible first and second holding parts; and a turning suppression part configured to suppress the core from turning upon the core print being grasped by the first holding device and the second holding device. The first holding device and the second holding device grasp the core print by respectively expanding the first holding part and the second holding part, and the turning suppression part applies a force that suppresses a turning moment acting on the core to the core print.