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3C cell phone frame aluminum plate size, flatness online inspection case

2023-07-19

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        High-end cell phone frames are generally manufactured by CNC machining of aluminum plate, as the support of the cell phone components, has a very high size and flatness requirements. If the flatness of the aluminum substrate is not accurate enough, it will lead to scrap after CNC machining, resulting in a double waste of time and money.


        In the past, the flatness of aluminum plate was inspected by manual plug ruler or three coordinates, due to low efficiency, high cost and only sampling inspection, which can no longer meet the current production line beat requirements.

High-efficiency, high-precision full inspection on the line is an alternative solution that is urgently needed in the industry.





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Recently, Atometrics received a request for testing and delivered to the customer's satisfaction.





01

Testing Program

→Size error: length, width ≤±0.1mm;
 → Flatness detection error: ≤±0.01mm
→ Beat: ≤2s/slice
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 Figure 1 - Illustration of Aluminum Plate Inspection










02

Application Difficulties

1. The products have different postures, appear tilted, can not adaptive measurement or measurement deviation;
2. The accuracy requirement is ±0.01mm, which requires high measurement accuracy for 3D line laser sensor;
3. The beat is fast, 2s/slice is required, the scanning rate is not enough will lead to leakage and wrong inspection.






03

Atometrics Professional Solutions




Atometrics uses a "template matching tool" to extract the center point of the 2D grayscale contour image to create an xy coordinate system that ensures adaptive measurement for automated batch inspection of products.




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 Fig. 2-Automated production line product location diagram




 The software is equipped with "tilt compensation" algorithm, which can automatically compensate for tilt to get the actual value, and the repeated measurement accuracy is ≤±0.01mm.

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图3-倾斜摆放扫描示意图


 Built-in "flatness measurement tool" allows you to customize the measurement area for high-precision flatness measurement. Measurement results are consistent with CMM measurement results.




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Figure 4 - Flatness Taking Points




Up to 10KHz scanning rate, detecting more than 20,000 pieces per day.




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 Figure 5- Schematic of 3D line laser inspection




04

The Atometrics Advantage

1.Extreme high precision measurement of 3840point
2.Powerful software functions-Various 3D inspection tools and algorithms are available

3. Professional service team - fast response, professional proposal, free testing machine


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Atometrics offers free nationwide testing!

Want to continue to learn more about 3D line laser measuring instrument industry examples

Stay tuned to Dr. Younger, and let's continue to share it with you in the next issue!


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