Stamping Stroke Measurement with TronSight TS-P Laser Displacement Sensors

AUTO01.Stamping Stroke Measurement with Laser Triangulation Sensors

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AUTO01.Stamping Stroke Measurement with Laser Triangulation Sensors

Aug 29, 2025

1. What It Is & Why It Matters

Stamping stroke measurement refers to monitoring the displacement of stamping press tools during metal forming. Accurate stroke measurement ensures:

Production consistency – guaranteeing each part meets dimensional tolerances.
Tool protection – detecting abnormal strokes to prevent press and die damage.
Process optimization – enabling closed-loop feedback for press automation.
Quality assurance – reducing defective parts and material waste.

In high-speed stamping lines, precise and non-contact stroke monitoring is crucial for efficiency, safety, and yield improvement.

2. Common Measurement Methods

Method	Principle	Advantages	Limitations
Mechanical LVDT sensor	Coil-based linear displacement sensing	Mature, relatively low cost	Contact wear, limited bandwidth
Linear encoder	Optical grating displacement detection	High resolution, stable	Sensitive to dust, vibration
Laser interferometry	Optical interference of laser beam	High accuracy	Complex setup, costly
Laser triangulation sensor	Measures reflection angle shift of laser	Non-contact, high-speed, robust on metals	Accuracy depends on surface reflectivity

3. Principle & Process of Laser Triangulation Measurement

Laser triangulation displacement sensors measure stamping stroke by:

Projecting a laser beam onto the moving press tool or workpiece.
Receiving the reflected light with a position-sensitive detector.
Calculating stroke displacement based on the triangulation geometry.
Tracking motion at high speed for real-time stroke curves.

Key benefits for stamping applications:

Non-contact measurement, avoiding wear and impact.
High-speed response (160kHz) for fast stamping presses.
Micron-level precision (0.02μm repeatability) for detailed analysis.
Inline integration, enabling automatic monitoring and alarm functions.

4. TronSight’s Solution

The TronSight TS-P Series Laser Triangulation Displacement Sensor provides a robust solution for stamping stroke measurement:

160kHz sampling rate – suitable for high-speed stamping lines.
±0.02% of F.S. linear accuracy – ensuring reliable stroke data.
0.02μm repeatability – capturing micro stroke variations.
Measuring range: 2–2000mm – adaptable to small and large presses.
Customizable (laser wavelength, spot size, structural design).
Integrated controller – reducing installation complexity.

Application Example (conservative wording):
In stamping lines, TS-P sensors can measure real-time stroke displacement, providing feedback for press adjustment and helping detect stroke anomalies before defects occur.