This is a precision-machined circular flange base designed for precision equipment that demands high concentricity, accurate hole positioning, and secure assembly.
From its overall shape and structural layout, it is clearly well suited for automation equipment, medical devices, optical instruments, inspection systems, and similar applications. It is commonly used in assemblies where precise concentric alignment and strict installation accuracy are essential.
The part has a disc-shaped body with a central through hole, a raised center hub on one side, multiple threaded holes evenly distributed across the face, and additional clearance holes and elongated relief slots. It is far more than a simple disc or washer. Instead, it is a multifunctional interface base that combines positioning, fastening, load support, and the installation of rotating or fixed components.
Parts like this are commonly used as flange connection discs, mounting bases, rotating interface plates, and precision adapter components. They are especially suitable for systems that require centered positioning, repeated fastening, and tight control over the relationship between multiple features.
1. Material and Surface Condition
This type of flange disc is most often made from stainless steel. If lower weight is a priority, it can also be produced from high-strength aluminum alloy. In medical equipment, inspection instruments, and precision machinery, stainless steel is usually preferred because it offers corrosion resistance, structural stability, and long-term dimensional reliability.
The surface retains a clean machined-metal finish. Standard turning marks can be seen on the circular faces and outer diameter, while the threaded holes, elongated slots, and stepped features are formed through precision milling and drilling. All edges have been carefully deburred and cleaned.
Depending on actual application requirements, additional treatments such as passivation, precision cleaning, anodizing, or cosmetic surface finishing can also be applied.
2. Application Scenarios
This type of component is commonly suitable for:
- Automation equipment and precision machinery
- Medical devices and instrument assemblies
- Optical or sensor-related systems
- Inspection and measurement equipment
- Rotating or centered mounting structures in precision assemblies
In practical use, parts like this are often used as mounting flanges, rotating interface hubs, connection discs, locating plates, or installation bases for related modules, shafts, sleeves, and assembled components.
3. Manufacturing Process
This is a typical turned-and-milled circular functional part. Its common production route generally includes:
- Preparing round bar stock or a disc blank
- CNC turning the outer diameter, face surfaces, center bore, raised hub, and circular step features
- CNC milling the elongated slots, local relief areas, and non-continuous inner ring features
- Drilling and tapping the circumferential threaded holes and additional clearance holes
- Deburring all slot edges, hole entrances, and functional transitions
- Cleaning and carrying out final dimensional inspection
For this type of component, stable production depends not only on machining capability, but also on accurate datum transfer between turning and milling operations, concentricity control, hole pattern management, and consistent handling of assembly-critical features.
4. Key Machining Challenges
Although the part is relatively compact, it is challenging to machine because it combines rotational features, non-rotational features, and a dense hole pattern in one precision assembly component.
Concentricity Between the Central Features and Outer Geometry
The center bore, raised hub, circular steps, and outer diameter must all remain accurately concentric. Any deviation can directly affect rotational alignment, installation accuracy, or the fit of mating parts.
Accuracy of the Hole Pattern
The circumferential threaded holes and clearance holes usually follow strict distribution requirements. The pitch circle diameter, angular spacing, depth consistency, and their positional relationship to the center bore all need to be tightly controlled to ensure smooth assembly and even fastening force.
Datum Transfer Between Turning and Milling Operations
This part combines turned circular features with milled slots and local reliefs. To maintain the correct relationship between the center bore, hole pattern, slots, and outer form, a stable datum strategy must be maintained throughout the entire machining process.
Control of Functional Steps and Relief Features
The internal stepped features and local relief structures may serve locating, limiting, clearance, or mating functions. Their depth, shape, and edge condition must therefore be carefully controlled to meet both assembly and functional requirements.
Thread Quality and Consistency
The multiple threaded holes are typically used for distributed fastening. Their thread form, depth, and hole-entry condition must remain consistent to ensure even clamping force and a stable assembly feel across all positions.
Deburring and Surface Quality
This type of part includes many hole entrances, slot edges, and machined transitions. Deburring must be thorough without affecting critical dimensions. At the same time, if the part is visible or semi-visible in the finished equipment, the surface texture and edge condition also need to remain neat and consistent.
Batch Consistency
For precision assembly parts like this, repeatability across production batches matters as much as the dimensional accuracy of an individual piece. Variations in concentricity, thread feel, slot finish, or hole alignment can all affect downstream assembly and final system performance.
5. Quality Control Focus
Inspection for this type of component typically focuses on:
- Center bore size and concentricity
- Raised hub diameter and height
- Outer diameter and face flatness
- Hole pattern position, thread quality, and depth
- Elongated slot width, length, and positional accuracy
- Dimensions of the circular step features
- Burr condition, cleanliness, and consistency of surface finish
For higher-spec applications, additional checks may include CMM inspection, thread gauge verification, dedicated concentricity inspection, simulated assembly validation, and roughness testing.
6. Manufacturing Value
The advantage of this circular flange base lies not only in its compact structure, but also in the way it integrates multiple precision features into one component. It must deliver accurate concentricity, evenly distributed hole positions, durable mating features, and consistent quality in batch production.
For customers in automation, medical, optical, and other precision equipment industries, what is needed is more than basic machining capability. They need a sound process route, unified datum control, proper post-processing, and stable quality from prototype through full production.
7. Need Technical Support for a Similar Component?
If your project requires a custom machined circular flange base, feel free to contact us at any time. Daxin century can support you with drawing review, machining analysis, and batch production services.
FAQ
What is this circular flange base mainly used for?
This type of part is commonly used as a mounting flange, interface hub, connection disc, locating plate, or rotating assembly component in automation systems, medical devices, optical equipment, and precision machinery.
Why is this type of part more complex than a standard disc or washer?
Because it integrates a center bore, a raised hub, a distributed threaded hole pattern, clearance holes, slots, and functional step features into one component, and all of these features must maintain accurate positional relationships.
Why is concentricity especially important for this type of component?
Because the center bore, raised hub, and surrounding mounting features usually determine the alignment of mating parts. Poor concentricity can lead to eccentricity, vibration, or unstable assembly.
What are the key inspection points for this flange hub?
The main inspection items usually include center bore size, hub dimensions, hole pattern distribution, thread quality, slot dimensions, face flatness, burr condition, and overall surface quality.
Is this type of part suitable for automation or medical equipment?
Yes. Its structure is especially well suited for applications that require stable centering, repeated fastening, and high-precision assembly performance.
What information should be provided before quotation?
For a more accurate quotation and process evaluation, it is best to provide 2D drawings, 3D files, material requirements, quantity, surface requirements, and any critical tolerances or inspection specifications.