Project Requirements Overview

As a critical component of a vehicle’s electrical system, the dimensional accuracy of automotive connectors directly impacts connection stability and electrical performance. The inspection plan focuses on five key dimensional measurements of automotive connectors: the height from the pin to the ring, the height from the triangular step to the ring, the height from the ring to the plastic surface, the ring radius, and the deviation distance between the pin and the ring’s center. Precise control of these dimensions is the cornerstone of ensuring connector quality and reliability.

3D Line Laser Profile Sensor Solution Overview

1. Camera Stability and Product Movement: During testing, the camera remains stationary while the vehicle socket sample moves horizontally at a constant speed through the sensor’s scanning area to ensure continuity and stability throughout the scanning process.

2. Scanning Speed Optimization: The scanning speed is set to 25 mm/s to balance scanning efficiency and data acquisition quality, ensuring an adequate number of data points while preventing image blurring caused by excessive speed.

3. Product Placement Strategy: To minimize measurement blind spots, the product’s orientation is optimized based on sensor characteristics and the socket’s shape, ensuring that all critical dimensions fall within the effective scanning range.

4. Machine Stability Requirements: Given the project’s pursuit of high precision, particular emphasis is placed on machine stability during testing. Even the slightest vibration can cause fluctuations in height-related data; therefore, effective measures must be taken to minimize vibration.

Challenges of the Plan

1. Reflection Interference from Complex Surfaces: The surfaces of automotive connectors are made of various materials, including metal and plastic. Significant differences in reflectivity between these materials can easily cause laser scattering or unstable reflection signals, thereby affecting measurement accuracy.

2. High Precision Requirements for Microscopic Dimensions: Parameters such as the deviation between the center of the pin and the center of the ring must be measured with micrometer-level precision, posing an extremely high challenge to sensor resolution and algorithmic processing capabilities.

3. Dynamic scanning synchronization: When the product moves at a constant speed of 25 mm/s, the sensor’s sampling frequency must precisely match the movement speed to avoid measurement errors caused by image stretching or compression.

Case Studies:

Advantages of the Solution:

1. Non-contact measurement: This solution employs a non-contact measurement method, eliminating the risk of physical damage associated with traditional contact-based measurement and preserving the aesthetic integrity of automotive connectors. It is particularly suitable for applications with stringent surface quality requirements.

2. High-Precision Inspection: The sensor’s laser line comprises 1,024 densely spaced sampling points, providing extremely high spatial resolution. This enables the precise detection of minute dimensional variations, meeting the high-precision inspection requirements for automotive connectors.

3. Robust Technical Support: We provide comprehensive technical services, including rapid response for on-site support, ensuring that any technical challenges encountered during project implementation are resolved promptly. This significantly shortens problem-resolution cycles and enhances inspection efficiency.