Today, we present a case study in precision Composite Machining, specifically designed for applications with rigorous requirements regarding assembly stability, positioning accuracy, and structural reliability. This component integrates the characteristics of both turning and milling processes, making it particularly well-suited for precision assembly needs within medical equipment, optical systems, inspection instruments, and other high-standard application fields.
1. Part Overview
This component integrates cylindrical locating features, milled datum surfaces, threaded holes, slots, and a central through hole. Judging from its features, it is not a simple turned part or an ordinary component, but a precision functional part intended for equipment that demands accurate alignment, secure installation, and repeatable assembly.
Structures like this are commonly found in precision assemblies for medical devices, optical modules, and inspection instruments, where manufacturing quality control standards are typically much more stringent.
2. Application Scenarios
Based on its structure and surface condition, this type of part is suitable for applications such as:
- Medical devices
- Optical and imaging systems
- Inspection and measuring equipment
- Precision automation machinery
- Custom functional mechanical modules
In actual use, parts like this are often designed to locate, mount, guide, support, or connect other critical components within a precision system.
3. Material and Surface Condition
This part is machined from SUS316L stainless steel. Thanks to its corrosion resistance, dimensional stability, and structural reliability, stainless steel is widely used in precision equipment components.
Visually, the part retains a natural metal finish after precision machining, along with controlled deburring and cleaning. Depending on the service environment, additional requirements such as passivation, precision cleaning, or laser marking can also be incorporated.
4. Manufacturing Process
This is a typical turning-and-milling combined part, and its standard process route generally includes:
- CNC turning for outer diameters, shoulders, flanges, and similar features
- CNC milling / 4-axis machining for planes, slots, and front-end functional features
- Drilling and tapping for threaded holes
- Laser marking for part identification or assembly orientation marking
- Deburring, cleaning, and final dimensional inspection
To produce this kind of part consistently in stable batches, machining skill alone is not enough. Fixture design, datum selection, and coordination between the turning and milling operations are all equally critical.
5. Main Machining Challenges
Although the part is relatively small, it presents several genuine manufacturing challenges.
Alignment Between Turning and Milling Features
The center hole, threaded holes, slots, and datum surfaces must all remain accurately aligned with the turning axis. This directly affects how well the part fits during assembly and whether it performs properly in service.
Secondary Clamping Accuracy
After turning is completed, the part often needs to be re-clamped for milling. If the positioning is inaccurate or the workpiece is not secured properly, problems such as eccentricity, angular deviation, or asymmetry can easily occur.
Burr Control and Edge Quality
Slots, hole openings, and other confined areas all require careful deburring. The edges must be clean enough for smooth assembly, but without compromising any critical dimensions.
Batch Consistency
For customers in the medical, optical, and precision equipment sectors, it is not enough for a single part to be accurate. Every part in the batch must come out the same. Surface finish, edge condition, marking clarity, and dimensional stability all need to remain consistent throughout the entire lot.
6. Quality Control Focus
Inspection of this type of component typically focuses on:
- Outer diameters and shoulder dimensions
- Flange thickness and locating positions
- Width and symmetry of the milled area
- Position and size of the center hole
- Hole position accuracy and thread quality
- Alignment between turned and milled features
- Surface cleanliness, burr condition, and marking clarity
For parts with tighter requirements, a coordinate measuring machine is typically used to carefully verify the positional accuracy of all critical features.
7. Why This Type of Part Goes Beyond Ordinary Machining
What makes this kind of part difficult is not just the tight dimensional requirements. More importantly, multiple processes such as turning and milling must work together seamlessly, each feature must align precisely with the others, and both functional reliability and visual consistency must be maintained.
For manufacturers of medical devices, optical instruments, and precision assemblies, parts like this cannot simply be made by following the drawing alone. They also require a mature and stable machining plan, appropriate inspection methods, and consistent execution from prototyping through batch production.
8. Need Support for a Similar Part?
If your product requires a compact component that involves both turning and milling, it is best to plan the material, structure, locating method, and inspection requirements early in the project. This helps reduce production issues and ensures consistent, reliable batch results.
Feel free to contact DAXIN for drawing review, machining analysis, and batch production support.
FAQ
What material is used for this precision machined component?
This component is made from SUS316L stainless steel, a material widely used in precision equipment for its corrosion resistance, dimensional stability, and structural reliability.
Is CMM inspection available for this type of part?
Yes. For parts with tighter tolerance or higher positional accuracy requirements, CMM inspection can be used to verify critical dimensions and feature relationships.
Can this type of part be customized based on drawings?
Yes. These components are usually custom machined according to customer drawings, dimensional requirements, material specifications, and application needs.
Can you support both prototypes and batch production?
Yes. This type of precision component can be supported from prototype development to stable batch production, provided the material, datum strategy, and inspection requirements are properly defined early on.
What surface treatments can be applied if needed?
Depending on the application environment, additional treatments such as passivation, precision cleaning, controlled deburring, and laser marking can be applied.
What information should be provided before quotation?
To evaluate this type of part more accurately, it is best to provide 2D drawings, 3D files, material requirements, surface finish requirements, quantity, and any critical tolerance or inspection standards.