Manufacturing service
Custom CNC Machining
Precision CNC machining for custom metal and plastic parts, prototypes, fixtures, and repeat production requirements.
- 3-axis and 4-axis machining
- 5-axis machining review
- CNC milling and turning
- Secondary finishing coordination
Service overview
Machining plans built around part function and drawing priorities.
Kewei supports CNC machined metal and engineering-plastic components from one-off development parts through repeat production requirements. Milling, turning, and multi-axis access are reviewed against geometry, material behavior, finish, and inspection needs.
The engineering review focuses on datums, workholding, tool access, thin walls, deep features, threads, fits, cosmetic surfaces, and critical dimensions before a manufacturing route is confirmed.
Representative milling setup for a multi-feature aluminum component.
Key capabilities
Process planning connected to the drawing and end use.
The manufacturing route is reviewed around geometry, material behavior, critical features, appearance, inspection, and downstream assembly.
5-axis machining review
CNC milling and turning
Secondary finishing coordination
Typical parts
Parts commonly reviewed for cnc machining.
Robotic joints
Motor housings
Precision shafts
Optical mounts
Sensor housings
Automation fixtures
Heat sinks
Valve bodies
Industries
Applications supported across engineering teams.
Materials
Material options linked to technical guidance.
Aluminum 6061Machinable and anodizing compatibleAluminum 7075High-strength structural partsStainless Steel 304Durable general-purpose componentsStainless Steel 316Corrosion-focused applicationsTitaniumStrength-to-weight applicationsPOMLow-friction mechanismsPEEKHigh-performance plastic partsNylonTough lightweight components
Surface Finishes
Surface Finishes reviewed for material and application fit.
Tolerances and design guidance
Define what is functionally critical.
Tolerance capability is reviewed feature by feature. Geometry, material, part size, wall thickness, setup count, finish buildup, and inspection method all affect what can be held consistently.
DG 01
Identify functional datums and critical-to-fit dimensions on the 2D drawing.
DG 02
Avoid applying tight tolerances to every feature when only selected interfaces are functional.
DG 03
Allow practical tool access and internal corner radii where geometry permits.
DG 04
Mark cosmetic faces, thread standards, surface roughness, and post-finish dimensions clearly.
Quality assurance
Inspection planning starts with the drawing.
Inspection points are selected from the controlled drawing, functional risk, process behavior, appearance criteria, and documentation requested for the project.
Drawing and revision review before process planning
First-off dimensional checks on identified critical features
In-process inspection aligned with geometry and risk
Final dimensional, thread, finish, and appearance review
CMM inspection supportOptical measurement supportCalipers and micrometersThread and pin gaugesInspection documentation support
Manufacturing workflow
A controlled route from RFQ to shipment.
The exact route changes with process and project risk, but each stage keeps the approved drawings and requirements in view.
- 01
Drawing and RFQ review
Review CAD, drawings, quantity, material, finish, tolerance, and delivery requirements.
- 02
DFM and process planning
Identify manufacturability risks, critical features, setup needs, and inspection priorities.
- 03
Production and in-process checks
Manufacture against the approved requirements and check priority dimensions during production.
- 04
Final inspection and shipment
Complete specified final checks, appearance review, documentation support, packaging, and dispatch.
Related case study
A structured project type, not an invented customer story.
Project-type example
Aluminum Robotic Joint
Project-type template awaiting verified Kewei project records
Review project structureFAQ
CNC Machining questions from engineering and sourcing teams.
What should I provide for a CNC machining quotation?
Send a 3D CAD file when available, a 2D drawing for critical dimensions and tolerances, material, quantity, finish, inspection, and delivery requirements. An engineer reviews the package before quotation.
Can Kewei machine both metal and plastic parts?
Yes. The current material range covers common aluminum and stainless grades, brass, copper, titanium review, and engineering plastics such as POM, nylon, and PEEK. Suitability is confirmed against the drawing and application.
Can one project combine milling, turning, and finishing?
Yes. A part can be reviewed for primary machining, secondary operations, thread or insert requirements, surface finishing, and final inspection as one coordinated manufacturing plan.
How is lead time determined?
Lead time depends on geometry, material availability, quantity, tooling or setup requirements, surface finishing, inspection, and delivery needs. Timing is reviewed with the quotation rather than presented as a fixed promise.
Related services
Continue into connected manufacturing routes.
CNC Machining
CNC Milling
CNC milling support for housings, brackets, plates, heat sinks, fixtures, and multi-face components.
View service CNC MachiningCNC Turning
CNC turning for precision shafts, bushings, spacers, nozzles, threaded parts, and rotational components.
View service CNC Machining5-Axis CNC
Multi-face machining for complex housings, robotic joints, optical mounts, and precision components requiring fewer setups.
View service Prototyping and EngineeringReverse Engineering
Physical sample review, dimensional capture, CAD reconstruction, and manufacturing drawing preparation.
View serviceStart your RFQ
Upload your drawings and receive an engineer-reviewed quotation.
Share the process, material, quantity, finish, tolerance, and delivery requirements. contact@kewei-kw.com / +86-13929495765