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Project Challenge
A medical device manufacturer put forward a customization request to Yisen Spring to develop high-precision micro spring components for a compact medical device. The internal installation space of this equipment is extremely limited, and the tolerance rate for the structural dimensions of the spring is very low. At the same time, it is required that the spring continuously provide stable mechanical contact performance during the operation of the equipment. The components must be able to withstand long-term and repeated operations, maintain a stable contact and conduction effect throughout the process, and must not interfere with or damage the precision micro-structures around the equipment.
The core challenge of this project is not merely to reduce the size of the spring, but to achieve a comprehensive and precise matching of the spring's shape structure, wire diameter, contact point position, elastic force size, dimensional accuracy and consistency within the extremely limited installation space. Only when all parameters are highly coordinated can the strict usage standards of medical equipment be met.
Yisen Solution
The Yisen Spring Engineering team deeply dissects the application scenarios, operation logic and installation space parameters of the customer's equipment, abandons the traditional fixed spring design scheme, and combines the overall mechanical structure of the equipment and the actual working conditions to optimize the overall shape and structural layout of the spring in a targeted manner.
Through multiple rounds of iterative prototyping and trial production, the team has gradually optimized core parameters such as wire diameter, coil structure, pitch, effective working length, and contact end face structure. On the basis of minimizing product volume and adapting to narrow installation Spaces, they have fully ensured the stable mechanical performance of the spring and precise and reliable contact.
All trial production samples have undergone strict dimensional accuracy inspection, mechanical property testing and reciprocating life testing. The engineering team continuously fine-tuned the design details and corrected the process parameters based on the test data, precisely balancing the three core indicators of micro-size, contact stability and repeat operation performance, to ensure that the spring size is precisely controllable and fully meets the customer's set standards.
Relying on the company's mature precision processing technology and standardized production system, the team optimized the mass production process, strictly controlled production tolerances, and unified production standards, completely solving problems such as dimensional deviations and performance fluctuations that are prone to occur in the mass production of micro-parts. This has significantly improved the stability and consistency of mass production, successfully transforming the final samples into mature component products that can be mass-produced on a large scale and in a standardized manner.
Project outcome
The custom-developed micro contact springs this time are perfectly adapted to the structure of the customer's compact medical equipment, with high assembly fit. During the operation of the equipment, the mechanical contact is stable and the performance is long-lasting. All the size parameters of the springs precisely meet the standards and fully comply with the customer's acceptance criteria. At the same time, relying on the optimized mass production process, the products can be mass-produced without deviation, with zero performance fluctuation. They have excellent mass production stability and can be supplied stably for a long time.
Through full-process engineering collaboration, iterative sample optimization, and meticulous mass production process control, Yisen Spring has successfully overcome the challenges of high precision, high stability, and high mass production capacity in medical micro springs. It has transformed the strict customization requirements for micro components into mature, practical, and stably mass-producible high-quality solutions.
This project fully demonstrates Yisen Spring's core service capabilities: it not only provides high-precision custom spring production services for medical device manufacturers, but also offers full-chain engineering technical support from the initial scheme conception, structural optimization, sample verification to standardized and stable mass production.