Wobble Welding Head: Improved Weld Quality, Better Gap Tolerance, and Consistent Results

A wobble welding head is an advanced laser welding tool that oscillates the laser beam in a controlled pattern (such as a straight line, circle, ellipse, or infinity shape) during the welding process. This movement improves weld width, consistency, and tolerance, making it superior to traditional fixed-spot laser welding.

Key Benefits of Wobble Welding Head

• High-quality, clean welds: Larger molten pools reduce porosity, cracking, and enhance weld strength.

• Excellent gap tolerance: Effective even with part misalignment or joint gaps.

• Consistent Welding Results: Wobble welding head achieves uniform and repeatable weld seams by precisely controlling the laser beam’s oscillation over the joint area. This controlled beam movement stabilizes the molten pool, minimizing defects such as porosity and spatter. Even with variations in part alignment or gaps, it ensures strong, clean welds with consistent quality across diverse materials and joint geometries.

Why Use a Wobble Laser Welding Head?

Automotive and Battery Applications

In sectors like automotive manufacturing and battery pack sealing, wobble laser welding heads ensure strong, wide, and defect-free welds. Their oscillating patterns accommodate variances in material thickness and surface irregularities.

Electronics and Dissimilar Materials

They are ideal for joining thin metals, dissimilar materials (like copper to aluminum), and other complex setups—no need to swap heads, just adjust the parameters.

Handheld and Robotic Integration

Wobble laser heads come in compact, lightweight versions suited for handheld laser welding and can also be integrated into robotic systems for mass production. [1]

Beam Oscillation Patterns and Parameters

Wobble heads support multiple oscillation patterns:

• Line

• Circle

• Ellipse

• Infinity (∞)

By tuning parameters like amplitude, frequency, and scan speed, users can optimize weld geometry and penetration based on material and application.

Key Parameter Overview

• Amplitude: Controls weld width

• Frequency: Affects stirring of the molten pool

• Speed: Influences processing time and weld depth

Scanner Optics Wobble Welding Head Overview

• Laser Power Support: Up to 2 kW and 6 kW versions

• Wavelength: 1070 ±10 nm

• Scan Frequency: Up to 150 Hz (standard), up to 500 Hz (high power)

• Welding Range: 5×5 mm

• Focal Length Options: 200 mm, 250 mm, 300 mm

• Weight: Approx. 7 kg

This combination delivers flexibility and performance for medium to high-power industrial applications.

How to Choose the Right Wobble Welding Head?

Select by Laser Power

2–6 kW: Ideal for battery, electronics, general fabrication

6–30 kW: Suitable for automotive chassis, heavy structural components [2]

Match Pattern to Weld Type

Thin, precise welds → high frequency, narrow amplitude (line or ellipse)

Wide, sealing welds → low frequency, larger amplitude (circle or ∞)

Safety and Maintenance

Quick laser shutdown (under 10 ms)

Replaceable protective lens

Dust-proof design

Real-time monitoring of mirror temperature and power

The wobble welding head is a game-changer for industrial welding, offering superior weld quality, increased process tolerance, and higher flexibility. Brands like Scanner Optics provide compact, powerful, and feature-rich solutions that integrate seamlessly into modern manufacturing lines.

If you're looking to reduce defects, increase efficiency, and improve weld consistency, a wobble laser welding head is your best investment.

Reference:

[1] https://www.accteklaser.com/product/double-wobble-laser-welding-machine/

[2] https://www.ipgphotonics.com/en-us/products/beam-delivery/laser-processing-heads/wobble-welding-heads