Solder Joint Defect Detection

Project Background

Measurement Background

With the increasing integration of electronic products, solder joint quality directly affects product performance and reliability. To ensure product quality, it is necessary to accurately measure the size, shape and electrical properties of solder joints, detect defects in a timely manner, optimize production processes, and enhance product competitiveness.

Camera Selection

Shengxiang ST081043

Measurement Items

Volume, height and cross-sectional area of solder joints

Detection Requirements

• Measurement accuracy ≤ 0.05mm
• Measurement repeatability ≤ 0.05mm
• Measurement cycle ≤ 3s

Solution

Adopt AI-Vision software and use the integrated solder joint detection tool to measure solder joint information with one click. It features fast operation speed, high precision, simple process and modular design for easy setup.

Design Concept

Implementation Effect Display

• Project Result Display

  
  

Project Process

1. Initialization

1. Use the Load Point Cloud tool to load point cloud data.

2. Preprocessing

Position Adjustment

2. Use the 3D Square Probe tool to obtain the left and bottom edges of the workpiece.

3. Use the 3D Geometric Intersection tool, bind the two edges output by the operator variables in the previous step as input geometries, and output the intersection point of the two lines.

4. Use the 3D Position Adjustment tool, bind the line intersection point output by the operator in the previous step as the new origin, and adjust the XY position of the point cloud.

Plane Fitting

1. Use the 3D Region tool to select the area for plane fitting.

2. Use the 3D Plane tool, bind the variable region output by the operator in the previous step as the input region, fit the plane and set it as the zero plane.

   
   

3. Solder Joint Measurement

Use three Solder Joint Detection tools to measure the volume, height, cross-sectional area and other information of three solder joints respectively.

4. Data Saving

Use the Write to CSV tool to save data, and bind the data in the Solder Joint Detection operator to the Write to CSV tool.