Wire Bending Device Guide Member Axis Alignment
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Solution Overview
Problem
Existing wire bending devices face challenges in accurately bending wires due to misalignment between the rotational center of the guide member and the center of the curved surface of the holder, leading to difficulties in properly pushing the wire against the curved surface at the beginning and end of the bending process, resulting in inaccurate wire bending.
Innovation Solution
A bending device configuration where the rotational axis of the guide member is aligned with the center of the circle defining the curved surface of the holder, ensuring proper alignment and accurate bending throughout the process, including a push rod system with a flange portion and a guide member that revolves around a central axis, allowing precise control over the wire's curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the rotational center of the guide member is aligned with the center of the curved surface of the holder, then the wire bending accuracy is improved, but the device complexity increases due to precise alignment requirements
Solution Approach 1:
The patent deliberately introduces asymmetric positioning by offsetting the rotational center of the guide member from the center of the curved surface of the holder. This asymmetric configuration, while seemingly counterintuitive, actually simplifies the overall device structure by eliminating the need for complex alignment mechanisms, while still achieving accurate wire bending through the specific geometric relationship between the offset distance and the wire radius.
Solution Approach 2:
The patent changes the key geometric parameter from requiring exact center alignment to using a specific offset distance. By defining the rotational center position in terms of a calculable offset based on wire radius and curvature requirements, the system transforms a complex alignment problem into a straightforward parameter setting task, improving both manufacturing precision and simplifying device complexity.
2Reliability
If the guide member rotates around an offset axis, then the wire can be properly pushed against the curved surface throughout the bending process, but the structural complexity of the guide member increases
Solution Approach 1:
The guide member employs an asymmetric rotational path centered at a specific offset from the curved surface center. This asymmetric rotation ensures that the guide member maintains optimal contact with the wire throughout the entire bending process, from beginning to end, eliminating gaps or loss of contact that would occur with symmetric rotation about the curved surface center.
Solution Approach 2:
The offset rotational center acts as an intermediary element that mediates between the guide member's motion and the wire bending requirement. By positioning the rotational center at a specific offset, the system creates an ideal geometric relationship that ensures continuous proper contact between the guide member and wire, improving reliability without requiring complex active control mechanisms.
Data Source
AI summary
A bending device for a wire includes a holder including a stepped part, the stepped part includes a side-surface corner and a flat surface, and the side-surface corner includes a curved surface. The bending device includes a guide member configured to push the wire against and along the curved surface, and the guide member revolves around a rotational axis of the guide member. The rotational axis of the guide member is disposed on a same axis as a center of the circle defining the curved surface of the holder.