CNC Multi Axis Machining
CNC Machining Services for Precision Medical Device and High-Tech Components
CNC machining is a subtractive manufacturing process in which computer-controlled cutting tools remove material from a workpiece to produce a finished component geometry. At Brunk, CNC machining serves two primary roles: it produces components where the geometry, material, or tolerance requirements are not achievable by stamping alone, and it performs secondary operations on stamped components that require machined features such as bores, threads, undercuts, or precision datum surfaces.
Brunk’s machining operations run on multi-axis milling and turning equipment capable of holding close tolerances (in the range of ±0.0005 inches) delete this on critical features. All machined components are inspected in-house across Brunk’s five metrology labs using CMM and optical measurement systems, and inspection data is maintained as part of the program record to support first-article and ongoing production quality requirements.
Machining Capabilities and Equipment
Brunk’s CNC machining capability includes multi-axis milling centers and CNC turning equipment suited to the range of component sizes and geometries encountered in medical device and high-tech manufacturing. Multi-axis milling allows complex part geometries to be produced in fewer setups, which reduces fixturing variation and improves positional accuracy between features. CNC turning handles cylindrical and rotationally symmetric features including precision bores, turned profiles, and threaded interfaces.
For programs involving exotic alloys, Brunk’s machining team has direct experience with stainless steel, titanium, nitinol, niobium, beryllium copper, and platinum iridium. These materials present specific challenges in machining, including work hardening behavior in austenitic stainless steels and titanium alloys, the need for controlled cutting parameters to avoid thermal damage, and tooling selection that accounts for the abrasive characteristics of some specialty alloys. Brunk’s process parameters for these materials are developed and validated against documented inspection data rather than derived from generic feeds and speeds references.
Where CNC Machining Fits Within a Stamping Program
For many of Brunk’s programs, CNC machining and progressive stamping are complementary rather than alternative processes. A precision stamped component may require a machined bore to achieve a tolerance that cannot be held in the die, or a threaded feature that would not be producible by forming. In these cases, Brunk designs the machining operation as part of the overall production flow, with fixture design and datum selection accounting for the stamped part’s reference geometry. This integration avoids the tolerance stack-up issues that arise when a stamped part is transferred to an outside machining vendor whose fixturing is not coordinated with the tooling that produced the part.
CNC machining is also used at Brunk for secondary operations on laser-welded assemblies, where post-weld machining is required to achieve final dimensional targets or surface condition requirements on critical interfaces.
Request CNC Machining for Your Program
Submit your component drawings or CAD files to discuss material, tolerance, and volume requirements for CNC machining at Brunk.
Frequently Asked Questions
What types of components does Brunk manufacture using multi-axis CNC machining?
Brunk provides multi-axis CNC machining services for complex, high-precision components used in MedTech and high-tech applications. Our capabilities support the production of intricate parts requiring tight tolerances, complex geometries, and high-quality surface finishes. Typical applications include medical device components, surgical instrument parts, precision housings, tooling components, and specialised components for advanced technology systems.
What are the advantages of multi-axis CNC machining compared with conventional machining?
Multi-axis CNC machining enables complex features to be produced in fewer setups by allowing the cutting tool to approach the component from multiple angles. This improves positional accuracy, reduces part handling, and increases consistency for components with intricate geometries. For precision medical and high-tech applications, this capability helps achieve the tight tolerances, repeatability, and surface quality required for demanding designs.
What materials can Brunk machine?
Brunk machines a wide range of metals and engineering materials used in precision manufacturing, including stainless steels, titanium, aluminium, nickel alloys, copper alloys, and other specialty materials. Material selection is based on the mechanical, environmental, and functional requirements of each application, with consideration given to factors such as corrosion resistance, strength, weight, and biocompatibility.
How does CNC machining support a progressive stamping program?
CNC machining is often used as a complementary process within Brunk’s progressive stamping capabilities. While stamping is highly efficient for producing high-volume precision components, CNC machining provides flexibility for complex features, secondary operations, prototypes, tooling components, and lower-volume or higher-complexity parts. Combining these capabilities allows Brunk to select the most effective manufacturing approach for each component while maintaining control over quality and supply chain management.
What tolerances and quality requirements can Brunk support?
Brunk’s CNC machining processes are designed to support the demanding tolerance and quality requirements of MedTech and high-tech customers. Through advanced CNC equipment, robust process controls, and precision inspection methods, we manufacture components with consistent dimensional accuracy and repeatability. Quality requirements are defined with each customer based on component function, regulatory requirements, and application needs.
Can Brunk support projects from prototype through production?
Yes. Brunk supports customers throughout the product lifecycle, from early-stage prototypes and design development through to production manufacturing. Our engineering team works with customers to optimise part designs, select the appropriate machining strategy, and integrate CNC machining with other capabilities including stamping, laser processing, surface finishing, automation, and assembly. This enables a seamless transition from development to scalable production.
This is the question
This is the answer
