Quality Management Process for Precision CNC Machining
Defect prevention, full traceability, and rigorous metrology control engineered for global supply chains. At PRECI5, quality is an integrated manufacturing discipline applied across every phase from mill certification verification to final coordinate metrology.
Process Standard: Multi-axis positional verification, GD&T inspection, and calibrated metrology logs.
Systematic Quality Control Workflow
Overseas procurement requires dependable risk mitigation at each handoff. Our 6-stage CNC machining quality control protocol eliminates downstream failures through preemptive validation.
Incoming Material Inspection
Raw bar stock, plates, and forgings (aluminum, stainless steels, titanium, engineering polymers) undergo spectrometer validation against mill test reports. Non-conforming lots are quarantined prior to production entry.
First Article Inspection (FAI)
CNC programs, tool offsets, datum schemes, and workholding are proved out prior to volume manufacturing. Complete dimensional layouts ensure compliance with 2D drawings and 3D CAD geometry.
In-Process Inspection
Machinists and QA technicians execute timed dimension routing, checking critical tolerances, tool wear, and surface roughness. Multi-axis 5-axis machining minimizes repositioning errors across complex geometries.
Final Inspection
Metrology lab verification covering 100% of critical GD&T datums, true position, perpendicularity, concentricity, and micro-inch roughness standards using high-accuracy tactile and optical inspection systems.
Documentation & Traceability
Complete traceability dossiers matching batch numbers to raw material heat certificates, treatment records, CMM point clouds, and dimensional inspection sign-offs for your regulatory submission.
Shipment & Protective Packaging
Export-grade packaging protocols engineered against oceanic moisture, shock, and transit abrasion. Custom foam cellular trays, vacuum bagging, and anti-corrosion barrier packaging preserve parts door-to-door.
Inspection Resources
Our dedicated quality control laboratory operates in a temperature-stabilized environment. All measuring systems undergo scheduled calibration schedules traceable to national metrology standards to maintain complete measurement reliability.
Calibration & Metrology Protocols
Gages and optical equipment receive routine verification against calibrated gauge block sets. Automated CMM routines ensure repeat accuracy for complex 3D surface profiles.
| Equipment | Specification | Quantity |
|---|---|---|
| ZEISS Coordinate Measuring Machine | 700 × 700 × 600 mm | 1 unit |
| Sirius Coordinate Measuring Machine | 500 × 600 mm | 1 unit |
| TR200 Surface Roughness Meter | — | 2 units |
| Rockwell Hardness Tester | HR-150A | 1 unit |
| Vickers Hardness Tester | HV-1000 | 1 unit |
| XRF Spectrometer | DX-320L | 1 unit |
| Microscopes | Optical Inspection | 10 units |
| Digital Calipers | 0–200 mm | 20 units |
Precision Machining Capability & Tolerancing
Our precision machining quality assurance is anchored by advanced production equipment, including 8 Japanese Mazak C600 5-axis machining centers. With 5-axis single-setup operations, geometric misalignment caused by manual re-clamping is drastically curtailed.
While our machines operate with a listed precision of 0.003 mm, real-world part tolerance depends on thermal expansion, material stiffness, geometry, and clamping dynamics. Our engineering team conducts DFM reviews before machining begins to identify high-risk features and guarantee predictable tolerances.
Quality System Implementation
We match documentation and verification levels to the regulatory demands of your end industry:
- • AS9100D (Aerospace): Full lot traceability, raw material cert verification, FAI documentation available upon request.
- • ISO 13485 (Medical): Process cleanliness control, surface passivity checks, non-destructive dimension testing.
- • IATF 16949 (Automotive): Process repeatability controls and inspection records available according to project requirements.
- • ISO 14001 & ISO 45001: Controlled working environment and sustainable chemical handling standards.
Why Quality Engineers Trust PRECI5
A balanced infrastructure supporting both pilot prototype verification and dependable repeat mass production.
Process Stability
Consistent machine tool calibration, validated workholding, and standardized tooling prevent batch-to-batch variation on recurring production runs.
Proactive DFM
Direct engineering feedback on corner radiuses, deep pockets, and wall thicknesses eliminates manufacturing pitfalls prior to metal removal.
Shenzhen Logistics
Integrated hub access provides efficient express air shipping, port access, and expedited supply chain turnaround for overseas buyers.
Audited Framework
Robust quality governance backed by ISO 9001, AS9100D, IATF 16949, and ISO 13485 management certifications.
Discuss Your Quality Requirements
Whether you need tight-tolerance 5-axis machined prototypes or complete production lots with custom inspection documentation, our metrology and engineering teams are ready to review your CAD files and GD&T drawings.