1. Background introduction

In the medical field, the frame base is a medical device with strict material and processing requirements. This case study shows the company's successful experience in using 4-axis CNC to machine the frame base. Black PC material has good light-shielding and aesthetics, high strength, heat resistance, weather resistance, light weight, flame retardancy, electrical insulation, easy processing, chemical stability and dimensional stability, making it widely used in multiple fields. PC material is also a recognized difficult-to-process material, so how to accurately process a frame base that meets medical standards has become a challenge.

2. Material and technical challenges

The main processing challenges of black PC material include:

1. Processing difficulty: This type of material may deform and have unstable or out-of-tolerance dimensions during processing due to its own stress, processing environment, and temperature changes

2. Appearance problems: Due to product structure problems, defects such as flange burrs, vibration marks, and knife steps may appear around the slots and holes during processing.

3. Accessory selection and process: This model requires riveting screws. Due to material factors, suitable screws and riveting processes need to be selected.

4. Cost control: The production and processing costs of this type of material are high.

5. Therefore, processing such parts requires high-precision equipment and strict process control. 4-axis CNC machine tools can provide advantages in these aspects, including reducing the errors caused by multiple clamping and being able to complete the processing of complex curved surfaces in one go.

3. Advantages of 4-axis CNC processing

Shiyuxiang Precision uses advanced 4-axis CNC processing, and the main advantages include:

1. Improve processing efficiency: 4-axis CNC processing can perform multi-faceted processing at the same time, reduce tool change and adjustment time, and improve processing efficiency.

2. Improve surface quality: The surface treatment requirements of this frame base are high. Using 4-axis processing can reduce tool marks and improve surface quality through continuous cutting.

3. Enhance processing flexibility: The structure of this frame base is relatively complex and the product is too large. Using 4-axis processing can handle different angles and all curved surfaces can be processed and formed in one go.

4. High precision: Using 4 axes can complete the processing of complex geometric shapes without the need to reposition the parts multiple times, which significantly improves the processing accuracy.

5. Reduce the number of clamping times: All-round processing can be completed with one clamping, reducing the time for repeated positioning, improving processing efficiency and reducing potential errors.

6. Reduce costs: Using 4-axis machining can reduce production costs by reducing the number of clamping times, improving efficiency and reducing scrap rates.

4. Processing process

In order to ensure the accuracy and surface quality of the frame base, Shiyuxiang Precision follows the following processing steps:

1. Design and programming: According to the 2D and 3D drawings provided by the customer, Shiyuxiang Precision's engineering team programs the processing path of the parts in detail, especially the curved parts, to ensure the consistency of the processing path with the design.

2. Roughing and finishing: Use 4-axis CNC machining for roughing to remove most of the material, and then perform finishing to ensure that the required dimensional accuracy and surface finish are achieved.

3. Surface treatment: In order to meet the strict requirements of medical devices, the frame base is deburred and riveted after processing to ensure that the surface flange burrs and thread riveting are firm and without bulging.

5. Quality control

In the production of medical devices, quality inspection is crucial. In order to ensure the performance of the frame base, Shiyuxiang Precision has implemented the following quality control measures: Dimension detection: Use high-precision altimeters and pin gauges and other precision measuring tools to detect the key dimensions of the frame base to ensure that it meets the design tolerance requirements.

Surface quality inspection: Use a magnifying glass to check whether the surface has burrs, cracks or other defects that may affect personal safety.

Mechanical properties test: The finished product is tested for tensile strength, fatigue strength and other tests to ensure its durability and reliability in actual use.

Flame retardant performance test: The material of the product is flame-retardant tested to ensure that the flame retardant level meets UL 94, V-0

6. Compliance requirements of the medical industry

As a medical device, the production of the frame base must meet strict industry standards. Shiyuxiang Precision also has the ISO 13485:2016 medical device quality management system certification. Shiyuxiang Precision strictly follows the ISO 13485:2016 medical device quality management system to ensure that every link from material procurement, processing to testing meets the standard. In addition, the frame base must pass a series of tests to ensure its safety and stability.

7. Conclusion

Through this case study, it can be seen that Shiyuxiang Precision successfully used 4-axis CNC technology to solve the difficulties in PC material processing, ensuring high standards in frame base processing stability and quality. This case not only demonstrates Shiyuxiang Precision's technical strength in high-difficulty material processing, but also shows that it has excellent experience and capabilities in the field of medical device manufacturing, providing customers with products that meet the strict requirements of the medical industry. It also highlights Shiyuxiang Precision's innovative ability in the medical field and its advantages in providing customized high-precision component solutions.