The car clutch cover, with a diameter exceeding 260 mm and a highly reflective metal surface, features a complex combination of screw pins, threaded holes, and bosses—these three elements combined represent an insurmountable challenge for automated inspection.

In the past, factories had only two options:

Manual measuring tools: micrometer + height gauge for point-by-point measurement; each item requires over 2 minutes per measurement, with readings taken manually and records documented by pen; batch consistency varies randomly.

General-purpose 3D linear laser: suffers from overexposure when illuminating reflective surfaces; the point clouds of screw hole edges and boss contours show complete voids, failing to meet even a 0.1 mm tolerance requirement—let alone suitable for mass production.

Until the LVM3750 is installed on the production line.

Full coverage of the entire 260 mm surface; outputs three height measurements in 1 second with 8 μm repeatability precision. Overexposure? Not an issue.

It's not just a "functional" device, but one that transforms clutch cover quality inspection from manual labor to automated random checks.

1. A single machine replaces the cumbersome three-step process

These inspection requirements for this clutch cover sound simple but are actually quite challenging to implement.

Distance from the top surface of the bolt stud to the end face of the clutch plate

Distance from the large screw hole on the housing to the end face of the clutch plate

Three consecutive small screw holes → Distance from the clutch plate end surface

What's the challenge? The three feature distributions span a 200-mm field of view, with highlight areas overlapping—ordinary cameras either lack sufficient coverage to require segmented shooting or produce completely white reflection areas.

The choice of LVM3750: no compromise, no haphazard selection, no trade-offs.

2、Five key figures, each precisely targeting critical pain points.

3、Field test results: After 10 repeated sampling measurements, the data remained consistently stable like a ruler.

Based on actual captured 3D point clouds (left: pseudo-color height map; right: brightness map), with no overexposure, clear steps, and intact edges.

Data from 10 repeated measurements with range:

The maximum range of the three parameters is 0.0137 mm, with stable repeatability that exceeds the customer's tolerance requirement of 0.1 mm.

4、When you replace your equipment, what exactly do you get in return?

V. Breaking the Industry's "Impossible Triangle"

High-reflection large-item inspection—combining precision, speed, and full coverage—is inherently impossible to achieve simultaneously; this has become the industry's unspoken rule.

The LVM3750 directly breaks this rule:

Precision: 8 μm; repeatability precision with a measured tolerance of more than 7 times, no false marking

Speed: 1 unit per second; production line maintains full speed with all original capacity utilized

Full coverage: 245–443 mm with an ultra-wide field of view; a single unit replaces multiple segmented systems.

The true value of automated inspection lies not merely in replacing human labor with machines, but in elevating quality control from relying on the expertise of seasoned technicians to leveraging concrete 3D data—where every dimension is verifiable and every judgment is data-driven.

VI. More than just the clutch cover: a high-reflectivity large component with a universal design solution

This solution has been successfully implemented on the clutch cover production line, but its capabilities extend far beyond this scope: New energy vehicles – battery trays, motor housings, IGBT heat sinks; 3C precision manufacturing – smartphone midframes, laptop casings, camera mounts; precision stamping/casting – transmission housings, steering knuckles, large structural components; general industrial applications – flatness and warpage inspection for large panels and glass surfaces.

If you're also struggling with the challenges of 3D dimension measurement involving high reflectivity, large sizes, and multiple features, feel free to leave a message or send a private inquiry. We'll provide free sample measurements tailored to your specific requirements and develop a customized visual measurement solution.