Quality Inspection in CNC Manufacturing
Quality inspection ensures CNC machined parts meet specifications. Modern inspection combines traditional measurement tools with advanced technologies like Coordinate Measuring Machines (CMM) and optical systems to verify dimensions, tolerances, and surface characteristics.
Inspection Methods
- Hand Tools: Calipers, micrometers, height gauges
- CMM: Coordinate Measuring Machine for complex geometries
- Optical Measurement: Vision systems for small features
- Surface Roughness Testers: Ra value verification
CMM Capabilities
| CMM Type | Accuracy | Best For |
|---|---|---|
| Bridge CMM | ±1-2μm | General purpose |
| Articulating Arm | ±10-20μm | Large parts |
| Optical CMM | ±2-5μm | Small parts |
GD&T Fundamentals
Geometric Dimensioning and Tolerancing (GD&T) defines part geometry using standardized symbols. It controls form, orientation, location, and runout beyond simple linear dimensions.
FAQ
What is the typical inspection rate?
First Article Inspection is 100%. Production runs use AQL sampling with SPC monitoring.
How long does CMM inspection take?
Simple parts: 10-30 minutes. Complex parts: 1-3 hours.
Need quality-certified CNC parts? Contact Jingou CNC.
