Arc Spring Forming with Image-Guided Bearing Face Positioning
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Solution Overview
Problem
Existing methods for forming arc springs in automatic transmission clutches often result in bearing faces on both end faces being out of predetermined positions and having lengths outside permissible ranges, leading to inefficiencies and increased formation time.
Innovation Solution
A forming method and device that determine the length and position of bearing faces on both end faces using image information, rotate the semi-finished product to a specified position, and drive a wedge into the coiled shape to deform it, ensuring the bearing faces are within predetermined positions and lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only the bearing face on one end face is detected and positioned, then the positioning process is simple, but the bearing face on the other end face may be out of the predetermined position
Solution Approach 1:
The positioning process is divided into two independent detection stages: first detecting the bearing face on one end face to determine rotational position, then detecting the bearing face on the other end face to verify positioning accuracy. This segmentation allows comprehensive control of both end faces without excessive complexity.
Solution Approach 2:
The system uses feedback from image sensors to detect the actual positions of bearing faces on both end faces, compares them with predetermined positions, and adjusts the rotational position accordingly. This closed-loop feedback ensures both end faces are accurately positioned despite variations in the semi-finished product.
2Manufacturing precision
If a special checking step is performed to verify bearing face lengths, then the bearing face length requirement is satisfied, but the formation time increases
Solution Approach 1:
The image sensor detects the bearing face lengths on both end faces before the forming operation begins. By performing this detection in advance and using the information to adjust the rotational position, the system ensures bearing face length requirements are met without requiring additional checking steps during or after forming, thus avoiding time loss.
Data Source
AI summary
Provided are a forming method for an arc spring, capable of easily and surely locating bearing faces on both end faces of a semi-finished product in predetermined positions, the bearing faces having lengths within permissible ranges in a circumferential direction. For a semi-finished product prior to curving an axis, it is determined whether circumferential lengths of bearing faces on both end faces are respectively within the permissible ranges based on end face image information of the both end faces imaged in an axial direction prior to the curving, a circumferential rotational position of the semi-finished product capable of respectively locating the bearing faces within the predetermined positions is specified using the end face image information, and the semi-finished product is rotated to the specified rotational position, and the wedge part is sequentially driven into inter-wires of the semi-finished product to deform the semi-finished product.