Step Height Detection for Watch Back Cover Manufacturing with Laser Displacement Sensor

Step Height Detection for Watch Back Cover Manufacturing with Laser Displacement Sensor
Step Height Detection for Watch Back Cover Manufacturing with Laser Displacement Sensor

Step Height Detection for Watch Back Cover Manufacturing with Laser Displacement Sensor

Industry pain points and demands

In luxury watch manufacturing, achieving perfection in every detail is non-negotiable. Step height detection for watch back covers presents significant challenges that can compromise quality, functionality, and aesthetics. The watch back cover must align precisely with the case to ensure a secure fit, but inconsistencies in thickness, depth, and step dimensions can lead to loose or overly tight fittings, making assembly difficult or causing damage during closing. 


Functional issues arise when step height or depth is incorrect, especially in watches with snap-fit, screw-down, or twist-lock back covers, potentially leading to loosening, difficulty opening or closing, and costly warranty claims or customer complaints. Additionally, step irregularities can create gaps, misalignments, or uneven appearances, undermining the elegant, luxurious feel of premium watches with engraved or textured back covers. These problems not only affect production efficiency but also jeopardize brand reputation and customer satisfaction in a highly competitive market.

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SinceVision Solutions: SD33-50 Laser Displacement Sensor

01Unmatched Precision with 5μm Accuracy: The SD33-50 delivers a static repeatability accuracy of 5μm (0.005mm), enabling precise measurement of step height, depth, and thickness to maintain design tolerances, preventing assembly issues and ensuring a secure, functional fit for snap-fit, screw-down, or twist-lock mechanisms.
02Adaptability to Challenging Surfaces: Designed to handle black, shiny surfaces on watch back covers that cause unstable reflections, the SD33-50 uses advanced laser technology for reliable, stable measurements, maintaining accuracy even on low-contrast or reflective materials for consistent quality.
03Cost-Effective and User-Friendly Design: Offering superior performance at a competitive price, the SD33-50 is an affordable, intuitive solution for watch manufacturers, with easy integration and operation, reducing costs while enhancing precision and efficiency across production lines.

Camera Selection

Model number
SD33-50-485-VA
Reference distance (CD)50mm
Measuring range±10mm
Light sourceLight source wavelength655nm
Laser classClass 2
Laser output power1mW
Spot diameter (spot size)Near side120×230μm
Reference distance110×440μm
Remote side150×670μm

Repetition accuracy

5μm
linearity±0.1% F.S.
Temperature characteristic0.05% F.S./℃
Sampling frequency (Hz)500/1000/2000/3000Hz(4 levels optional)
Input/outputCommunication port1 RS485 (support ModbusRTU)
Analog output

1 analog output, analog voltage (0~10V) or analog current (4~20mA)

Analog voltage or analog current cannot be switched

IO input1 channel, support laser shutdown, remote teaching, sampling hold, single pulse trigger, return to zero and other functions
IO output1 route, determine the status output

Operating temperature

-10 ~ 50℃

Storage temperature-20 ~ 70℃
Working humidity35% to 85% no condensation
EFT protectionPower port 2kV/5 or 100kHz, signal port 1kV/5 or 100kHz, in accordance with IEC 61000-4-4 standards
ESD protectionContact discharge is 4kV and air discharge is 8kV, in line with IEC 61000-4-2 standards
Vibration

10~55Hz, double amplitude 1.5mm, X, Y, Z direction 2 hours each

ImpactPunch 500m/s² (about 50G) three times in X, Y, and Z directions
IP levelIP67, conforming to IEC 60529 standard
dimensions (mm)60×50×22
Weight (including cables)120g