SS-Ring Inspection System

The Ring Inspection System is designed to automate the quality inspection of metal (SS) rings used in sealing and mechanical applications. With a throughput of up to 120 parts per minute, this system ensures reliable, high-speed inspection while eliminating manual errors. The integration of top, and bottom imaging—powered by 3D profilers and area scan camera—allows for comprehensive defect detection and dimensional checks.

Problem Statement:

Manual inspection of rings is labor-intensive, inconsistent, and prone to oversight—particularly in high-volume production lines. Ensuring dimensional accuracy, and defect-free surfaces requires a robust solution that can handle a wide range of ring sizes while maintaining high throughput and accuracy.

Solution:

Unilogic developed a fully automated Ring Inspection System that uses a combination of 3D line profilers and high-resolution area scan camera to perform rapid inspection.

• Feeding Mechanism: An automated mechanism will feed the rings in a properly aligned manner to the inspection station.
• Image Acquisition: The system captures images from top and bottom perspectives using multiple 3D profilers and a camera.
• Defect Detection: Using special image processing algorithms, the software identifies surface defects, foreign material, and dimensional deviations, classifying parts as OK or Not OK.
• Sorting Mechanism: Defective rings are removed via a pneumatic ejector, while accepted parts continue to the good bin/conveyor.
• Report & Traceability: The machine logs all inspection data and generates automatic inspection reports.

 

S.No	Specification Parameter	Typical Value or Range	Comments
1	Machine Inspection Speed	60 PPM to 120 PPM	-
2	Surface Defects	Minimum 0.5 mm²	3D Profiler View
3	Foreign Material Detection	Minimum 0.5 mm²	Top Camera / 3D Profiler View
4	Thickness	2 mm to 8 mm	3D Profiler View
5	Outer Diameter (OD)	10 mm to 60 mm	Top Camera View
6	Flatness	1 mm	3D Profiler View
7	Circularity	0.5 mm	Top Camera View
8	No. of Area Scan Cameras	1	5 MP, USB3, mono, Global shutter
9	No. of Line Profilers	2	High definition 3D line profile sensor
10	Machine Dimensions (L × W × H)	4039 mm × 1925 mm × 1886.3 mm	-

  

Key Features:

• High-Speed Inspection: Designed to inspect 60–120 rings per minute, depending on ring dimensions.
• User-Friendly Operation: Operable through push buttons, minimizing direct PC interaction.
• Advanced Image Processing: Supports customizable inspection parameters for different ring types and defect thresholds.
• Report Generation: Generates inspection reports in formats such as Excel and PDF for easy documentation and analysis.
   

Benefits:

• Single-Person Operation: Reduces manpower while improving consistency and reliability.
• Power Efficiency: Integrates low-power electric and pneumatic components for energy-conscious operation.
• Supports Multiple Models: Allows quick setup changes for inspecting different ring sizes and types.
• Secure Multi-Level Access: Offers tiered access for operators, engineers, and supervisors with report and setting control.
• Automatic Report Generation and Logging: The machine automates the generation of inspection reports and is able to log the reports.