Welding Head for Rotor Lamination Stacking and Welding Machines

Product Specifications

Technical details and manufacturing context for Welding Head

Definition

A welding head is a critical component of electric motor rotor lamination stacking and welding machines. It is the end-effector that applies precise welding energy (typically resistance or laser) to fuse individual steel laminations together, forming a rigid rotor core. It operates under automated control to ensure consistent weld quality, penetration, and positioning across the rotor stack. The welding head is designed for integration into automated production lines, where it interfaces with the machine's control system and power source. It is available in configurations that support resistance welding or laser welding, depending on the application requirements. The head includes a structural frame, electrodes or a laser focusing lens, and provisions for cooling and electrical or optical connections. The materials used in its construction include copper alloy for electrodes, high-strength steel for the structural frame, and ceramic insulation for electrical isolation. The welding head is characterized by parameters such as rated power (5–15 kW), welding current (100–500 A), welding speed (0.5–2.0 m/min), positioning accuracy (±0.05 mm), repeatability (±0.02 mm), supply voltage (380–480 V AC, three-phase, 50/60 Hz, per IEC 60038), operating temperature (5–40 °C), ingress protection (IP54–IP65 per IEC 60529), weight (50–120 kg), and cooling method (water-cooled). These values are reference ranges and must be verified for the specific model and application. The welding head is a component, not a standalone machine, and its performance depends on the overall system. When selecting a welding head, consider the lamination material and thickness, required weld quality, production speed, and integration with existing equipment. Verify model-specific specifications and standards with the legal manufacturer or supplier. Regular maintenance includes checking electrode wear, cooling system integrity, and alignment. Failure to maintain proper cooling or electrode condition can lead to inconsistent welds or equipment damage. The welding head is not intended for manual operation; it is designed for automated use within a machine.

Working Principle

The welding head receives electrical energy or laser beam energy from the machine's power source. It positions electrodes or a laser focusing lens against the rotor lamination stack at pre-programmed points. Upon actuation, it applies concentrated heat (via electrical resistance or laser absorption) to melt and fuse the thin steel laminations together. It then retracts, allowing the weld to solidify and create a permanent bond between layers.

Common Materials

Copper alloy (for electrodes), High-strength steel (for structural frame), Ceramic insulation

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Power	5–15 kW	Determines welding speed and penetration depth.
Welding Current	100–500 A	Adjustable for different lamination thicknesses.
Welding Speed	0.5–2.0 m/min	Affects heat input and distortion.
Positioning Accuracy	±0.05 mm	Ensures consistent weld seam placement.
Repeatability	±0.02 mm	Critical for high-volume production.
Supply Voltage	380–480 V AC	Three-phase, 50/60 Hz.IEC 60038
Operating Temperature	5–40 °C	Outside this range, cooling may be required.
Ingress Protection	IP54–IP65	Protects against dust and water jets.IEC 60529
Weight	50–120 kg	Affects mounting and handling.
Cooling Method	Water-cooled	Required for continuous high-current operation.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Electrode Holder
Secures and aligns the welding electrodes, providing electrical contact and mechanical stability.

Material: Copper alloy
Force Actuator
Applies and controls the precise downward force of the welding head onto the rotor stack.

Material: Steel with pneumatic/hydraulic components
Cooling Jacket
Circulates coolant to prevent overheating of the welding head during operation.

Material: Stainless steel or copper
Welding Electrodes
The consumable tips that carry the current into the lamination stack and melt it.
Laser Focusing Lens Optional
Focuses the beam onto the stack on laser-welding versions.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Welding Station

View system integration details

Manufacturers of Welding Head

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Scanner Optics Co., Ltd.

Shenzhen, Guangdong, CN

Also makes: Optical Encoders, Linear Encoder, Rotary Encoder and 4 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What is the function of a welding head in a rotor lamination stacking and welding machine?

The welding head is the end-effector that applies welding energy (resistance or laser) to fuse steel laminations together, forming a rigid rotor core. It operates under automated control to ensure consistent weld quality and positioning.

What are the typical power and current ranges for this welding head?

The rated power is typically 5–15 kW, and the welding current is 100–500 A. These are reference ranges; actual values depend on the specific model and application. Always verify with the manufacturer.

What cooling method is used, and why is it important?

The welding head is water-cooled. This is required for continuous high-current operation to prevent overheating and maintain consistent weld quality. Ensure the cooling system is properly maintained.

What standards apply to this welding head?

The supply voltage reference is per IEC 60038, and ingress protection is per IEC 60529. These standards are procurement references; they do not guarantee certification. Verify compliance with the supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0.5 to 3.0 bar (electrode contact force)
other spec:	Welding current: 5-20 kA DC, Cycle time: 0.5-3.0 seconds per weld
temperature:	Ambient to 150°C (welding zone localized heating)

Welding Head

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards