Built around a heavy-duty moving-bridge structure where the workpiece stays completely stationary on a solid granite base, this stationary-part VMM architecture eliminates motion-induced part vibration during inspection cycles. Driven by four-axis CNC closed-loop control, AC servo drives, and 0.1 µm resolution open grating scale rulers, the machine acquires high-resolution camera data, aligns scaling targets, extracts sub-pixel edge details, and merges multi-sensor inputs into a single 3D report through iMeasuring software.
┌─────────────────────────────────────────────────────────────────────────┐
│ 1. MULTI-SENSOR DATA SNAPSHOT │
│ 1/1.8" HD Camera | 6.5X Auto Zoom | MCP Touch Probe | Omron Laser │
└────────────────────────────────────┬────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────────┐
│ 2. CALIBRATION & SCALE FIXING │
│ 0.1 µm Open Grating Scales | Lens Distortion Fix | Grid Alignment │
└────────────────────────────────────┬────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────────┐
│ 3. SUB-PIXEL EDGE CRUNCHING │
│ 5-Ring/8-Zone LED Light | Curve Shape Math | Contour Edge Pinpointing │
└────────────────────────────────────┬────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────────┐
│ 4. SENSOR BLENDING & FINAL REPORT │
│ iMeasuring Software | Fused 3D Point Cloud | Pass/Fail Tolerance Report │
└─────────────────────────────────────────────────────────────────────────┘
System Calibration & Scale Accuracy
System calibration functions as the core bridge converting pixel coordinates into physical engineering units (millimeters or micrometers). Across the QualiVMM™ MuSen Series (including the 500, 600, and 1000 models), the software setup accounts for optical zoom variations, illumination shifts, motor guide alignment, and multi-sensor offsets.
Primary calibration techniques used in this machine include:
- Grid Target Plate Alignment: Utilizing chrome-on-glass grid plates covered in precision dot arrays to correct optical lens warping across the 6.5X automatic zoom lens (0.7×–4.5× optical magnification).
- Volumetric Stage Calibration: Mapping open grating scale linear rulers (0.1 µm resolution) across extended stage travels, up to 1000 × 1000 mm or 500 × 1600 mm, maintaining E1x,y accuracy ratings down to 2.5 + L/200 µm.
- Multi-Sensor Co-Registration: Linking the exact coordinate zero-point of the 1/1.8" HD digital color camera, optional MCP-Kit 1 contact touch probe, and Omron laser displacement sensor so they interact seamlessly inside iMeasuring 5.1 software.
- Kinematic Stage Verification: Tracking AC servo drives, precision linear guide rails, and ground ball screws to verify that the heavy granite bridge moves with absolute consistency over long shifts.
Core Measurement Methodologies & Performance Benchmarks
Here is a breakdown of how the theoretical methods directly align with the four configuration packages of the QualiVMM™ MuSen Series:
| Configuration & Tech Package | How the Technology Works | Operational Benchmark & Model Specs |
|---|
Type A (2.5D Optical Zoom)
e.g., QualiVMM™ MuSen 500A | Combines a 1/1.8" HD color camera with a 6.5X automatic zoom lens and 5-ring/8-zone programmable LED surface lighting for non-contact 2D edge profiling. | E1x,y = 2.5 + L/200 µm accuracy with 0.1 µm open grating scale resolution across a 500 × 500 × 300 mm travel range. |
Type B (3D Optical + Contact Probe)
e.g., QualiVMM™ MuSen 500B | Integrates an MCP-Kit 1 contact touch probe alongside the optical camera system inside iMeasuring 4.2 software to reach vertical walls and hidden step features. | E1z = 5.0 + L/200 µm accuracy and 5 µm repeatability for full 3D coordinate probing. |
Type C (2.5D Optical + Laser)
e.g., QualiVMM™ MuSen 500C | Pairs non-contact video imaging with an Omron non-contact laser sensor inside iMeasuring 5.0 for high-speed height, depth, and flatness scanning. | Sub-micron height profiling on reflective surfaces without touching delicate parts. |
Type D (3D Multi-Sensor)
e.g., QualiVMM™ MuSen 500D | Merges zoom video optics, MCP contact probing, and Omron laser sensing into a single unified inspection system driven by iMeasuring 5.1. | Complete multi-sensor data fusion for complex 3D parts containing mixed optical and tactile features. |
Extended Travel Platforms
QualiVMM™ MuSen 600 & 1000 | Utilizes a stationary part, moving-bridge granite frame across large stage dimensions, reaching up to 500 × 1600 mm or 1000 × 1000 mm with up to 400 mm Z-travel. | E1x,y = 3.0 + L/200 µm accuracy over massive inspection envelopes for heavy fixtures. |
Engineering Principles Driving QualiVMM™ MuSen Performance
Every architectural feature on the QualiVMM™ MuSen Series directly supports high-accuracy measurement theory:
- Stationary Workpiece Moving-Bridge Frame: Unlike moving-stage machines where heavy parts cause mechanical inertia and stage flexure, keeping the workpiece fixed on a granite base while the granite bridge moves over it keeps measurement geometry stable for parts weighing hundreds of kilograms.
- Sub-Pixel Edge Detection Math: To achieve sub-micron dimensional accuracy without requiring cost-prohibitive camera sensors, iMeasuring software uses grayscale edge algorithms that split individual camera pixels into tiny sub-slices.
- Programmable Illumination Control: Achieving high contrast on reflective or dark materials relies on 5-ring, 8-zone programmable LED surface lights (intensity 0–255) paired with parallel LED contour illumination to eliminate shadow distortion around component borders.
- Closed-Loop CNC Motion & Scale Feedback: Four-axis CNC movement powered by AC servo drives and ground ball screws works alongside 0.1 µm open grating scales to ensure smooth positioning and zero lost motion during automated batch inspections.
