Products

 

Automatic Laser Welding Machine + Four-Axis Workbench — Model UK-ZDH

Product Overview

The UK-ZDH Automatic Laser Welding Machine with Four-Axis Workbench is a highly capable, fully automated CNC laser welding station engineered by Youkong  to deliver precision, speed, and versatility in industrial welding applications. This system represents the perfect marriage between a high-performance fiber laser welding source and an intelligent four-axis CNC workbench — creating a unified, automated welding cell that can handle a diverse range of welding tasks with exceptional repeatability, minimal operator intervention, and outstanding weld quality. The  "four-axis workbench" — is the defining feature that elevates this machine far beyond a standard fixed-position laser welder. By integrating four independently controlled axes of motion into the workbench platform, the UK-ZDH gains the ability to position, rotate, tilt, and translate workpieces with complete freedom — enabling complex, multi-plane weld programs to be executed automatically in a single setup. This eliminates the need for manual repositioning between weld passes, dramatically reduces cycle times, and ensures that every weld joint is approached at the optimal angle and position for maximum quality and penetration. The UK-ZDH is designed for manufacturers who need to move beyond the limitations of manual or semi-automatic welding — automating repetitive, high-volume welding tasks while maintaining the precision and consistency that modern industrial production demands. It is equally suited for dedicated high-volume production lines running a single part type and flexible manufacturing cells that process a variety of different components with rapid program changeover.

Understanding the Four-Axis CNC Workbench

The four-axis workbench is the technological cornerstone of the UK-ZDH and the primary feature that distinguishes it from simpler automated welding systems. To understand its significance, it is important to appreciate what four-axis motion control means in practice and why it is so valuable for automated laser welding.

What Are the Four Axes?

In a typical four-axis CNC workbench configuration for laser welding, the four controlled axes provide:

• X-Axis (Transverse): Linear movement of the workbench or workpiece in the left-right direction. This allows the laser welding head to traverse along the length of a weld seam horizontally.
• Y-Axis (Longitudinal): Linear movement in the front-back direction. Combined with X-axis motion, this enables the welding head to follow any 2D weld path across the flat plane of the workbench.
• Z-Axis (Vertical): Linear movement in the up-down direction. This axis controls the focal distance between the laser welding head and the workpiece surface — critical for maintaining optimal beam focus and weld quality as workpiece geometry varies.
• Rotary Axis (Rotational): Rotational movement around one of the linear axes. This allows cylindrical parts, round components, or assemblies to be rotated during welding — enabling continuous circumferential welds on pipes, tubes, round flanges, battery cells, and similar rotationally symmetric components without stopping and repositioning.

Together, these four axes give the UK-ZDH the ability to execute complex, multi-directional weld programs that cover all faces and joints of a workpiece in a single automated cycle. The CNC controller coordinates all four axes simultaneously, ensuring smooth, continuous motion along complex weld paths with precise speed and position control throughout.

Why Four Axes Matter for Laser Welding

In laser welding, the quality of the weld is extremely sensitive to:

• Focal distance: The laser beam must be focused at exactly the right distance from the workpiece surface. Even a small deviation of 1–2mm from the optimal focal point can significantly reduce power density at the weld zone, leading to inadequate penetration or inconsistent bead geometry.
• Approach angle: The laser beam must be directed at the weld joint from the optimal angle to maximize energy absorption and achieve the desired weld profile. Incorrect beam angle can cause energy reflection, asymmetric weld beads, or lack of fusion at joint edges.
• Travel speed: The speed at which the weld head moves relative to the workpiece directly controls heat input, penetration depth, and bead width. Consistent, programmable travel speed ensures uniform weld properties along the entire joint length.
• Seam tracking accuracy: The welding head must precisely follow the weld joint path — even when it curves, changes direction, or transitions between planes.

The four-axis CNC workbench addresses all of these requirements simultaneously — automatically positioning the workpiece at the correct orientation, maintaining the correct focal distance via Z-axis control, and following the programmed weld path at the specified speed — all while the operator monitors the process safely from outside the welding zone.

Laser Power — 1000W to 4000W

The UK-ZDH is equipped with a fiber laser source ranging from 1000W to 4000W, providing a broad power envelope that covers a wide range of material types, thicknesses, and welding speed requirements. This power range offers exceptional application flexibility:

1000W – 1500W (Precision & Thin Material Applications)

At the lower end of the power range, the UK-ZDH delivers precise, controlled energy input ideal for:

• Welding thin-gauge stainless steel, aluminum, and copper components where heat input must be carefully managed
• Battery cell and module welding where thermal damage to sensitive electrochemical components must be avoided
• Small precision components such as sensors, connectors, and electronic device housings
• Applications where cosmetic weld quality is paramount and weld bead width must be minimized

1500W – 2500W (General Production Welding)

The mid-range power band is the workhorse configuration for the majority of the UK-ZDH's target applications:

• Door handles, hinges, and architectural hardware
• Kitchen appliance components including mixers, blenders, and cookware
• Automotive stamped parts and sub-assemblies
• Stainless steel fabrications for food processing, medical, and industrial equipment
• Medium-gauge carbon steel structural components and brackets

2500W – 4000W (High-Speed & Heavy-Duty Applications)

At maximum power, the UK-ZDH becomes a high-throughput production tool capable of:

• High-speed welding of medium to thick gauge materials at elevated travel speeds — maximizing production output
• Deep penetration welding of thicker carbon steel, stainless steel, and alloy components
• Welding of highly reflective materials such as copper and aluminum alloys that require higher power densities to initiate and maintain the welding process
• Processing of large, heavy workpieces where rapid, high-energy welds are needed to ensure full fusion and structural integrity

The ability to configure the UK-ZDH across this full power range — and to adjust power dynamically within a single weld program — gives manufacturers the flexibility to optimize the machine for virtually any welding task they encounter.

Weld Gap Tolerance — ≤0.5mm

A critical and highly practical specification of the UK-ZDH is its maximum weld gap tolerance of ≤0.5mm. This parameter defines the maximum permissible gap between the two mating surfaces of a weld joint for the machine to produce a high-quality, defect-free weld. The significance of this specification goes beyond simple technical detail — it has direct implications for upstream manufacturing processes and overall production economics:

Why Weld Gap Control Matters

Laser welding is fundamentally different from MIG or TIG welding in its sensitivity to joint fit-up. Because laser welding uses a highly focused beam with a very small spot size, it has limited ability to bridge gaps between joint faces. If the gap is too large, the laser energy passes through the gap rather than melting both joint faces simultaneously — resulting in incomplete fusion, weld porosity, undercut, or complete weld failure. The ≤0.5mm gap tolerance of the UK-ZDH means:

• Joint preparation standards: Parts must be cut, stamped, or formed to a precision that ensures mating faces are within 0.5mm of each other when fixtured for welding. This drives a positive discipline in upstream fabrication quality.
• Fixturing design: Weld fixtures and jigs must be designed to hold parts securely and maintain joint gap within tolerance throughout the welding cycle — particularly important for larger assemblies where thermal expansion during welding can cause joint movement.
• Material and process compatibility: The ≤0.5mm tolerance is achievable with properly prepared laser-cut, stamped, or precision-machined parts — which are the standard input materials for the industries the UK-ZDH serves.

For applications involving batteries, door handles, mixers, and stamping parts — all cited application examples for the UK-ZDH — achieving ≤0.5mm joint fit-up is entirely practical with standard precision fabrication methods, making this specification a realistic and achievable production requirement rather than an onerous constraint.

Machine Dimensions — 1040×970×1720mm (Customizable)

The standard footprint of the UK-ZDH is 1040mm (width) × 970mm (depth) × 1720mm (height) — a compact and space-efficient form factor for a full four-axis CNC laser welding station. This carefully designed envelope means:

• The machine can be accommodated in standard factory environments without requiring specialized facility modifications or exceptionally wide aisle clearances
• Multiple UK-ZDH units can be installed in close proximity on a production floor for parallel processing of the same or different parts — multiplying throughput without proportionally multiplying floor space consumption
• The height of 1720mm provides ergonomic access for operators loading and unloading workpieces, monitoring weld progress, and performing routine maintenance without the need for platforms or access equipment

Customizable Dimensions

Recognizing that production environments vary widely — from compact job shops to large-scale automated facilities — Youkong offers customizable machine dimensions for the UK-ZDH. This means the workbench size, working envelope, fixture interface, and overall machine configuration can be adapted to match specific customer requirements, including:

• Larger workbench platforms for processing bigger assemblies
• Extended axis travel ranges for longer weld seams or larger parts
• Custom fixture interfaces for specific workpiece geometries
• Integration of additional axes or handling systems for complex production cell configurations
• Modified machine heights or layouts for specific ergonomic or facility constraints

This customization capability ensures the UK-ZDH can be precisely matched to each customer's unique production requirements — rather than forcing manufacturers to compromise their process to fit a fixed machine specification.

Target Applications

The UK-ZDH is specifically engineered and optimized for a defined set of high-value industrial welding applications where its combination of four-axis automation, laser precision, and power range provide decisive advantages:

1. Battery Welding

Battery manufacturing — particularly for lithium-ion cells and modules used in electric vehicles, energy storage systems, and consumer electronics — is one of the most demanding and fastest-growing laser welding applications in the world. The UK-ZDH addresses the unique challenges of battery welding:

• Thermal sensitivity: Battery cells contain electrochemical materials that are extremely sensitive to heat. The UK-ZDH's precise laser power control and programmable weld parameters minimize heat input, protecting cell integrity and preventing thermal damage to electrolytes and separators.
• Weld geometry complexity: Battery module assembly often requires welding of tab connections, cell caps, and module housings that involve multiple joint types and orientations — perfectly suited to the four-axis workbench's ability to reposition parts automatically.
• High volume requirements: Battery production demands extremely high throughput with zero defect tolerance. The UK-ZDH's automation and consistent weld quality delivery supports the volume and reliability requirements of battery manufacturing.
• Material diversity: Battery assemblies involve welding of aluminum, copper, nickel-plated steel, and stainless steel — all materials well-suited to fiber laser welding.

2. Door Handles

Door handle welding — for automotive, architectural, and furniture applications — requires aesthetically clean, structurally strong welds on complex 3D geometries. The UK-ZDH's four-axis workbench enables the automatic repositioning of handle blanks to weld all joints in a single automated cycle. The laser produces narrow, clean weld beads with minimal spatter on stainless steel and aluminum handles — delivering the premium surface quality expected in consumer-facing products.

3. Mixers & Kitchen Appliances

Mixer bowls, blades, housings, and internal structural components require food-grade, hygienic welds on stainless steel. The UK-ZDH's laser welding produces smooth, low-profile weld beads that minimize crevices where food particles or bacteria could accumulate — supporting compliance with food safety standards. The four-axis automation handles the complex geometries of round bowls, curved housings, and multi-face assemblies efficiently.

4. Stamping Parts

Stamped metal components are ubiquitous across automotive, appliance, and industrial manufacturing. Stamping operations often produce parts with complex 3D profiles, multiple features, and tight dimensional tolerances. The UK-ZDH's four-axis workbench and precise laser control are ideal for welding stamped assemblies — joining multiple stamped components into complex sub-assemblies with consistent, high-quality welds that maintain the dimensional integrity of the finished assembly.

5. Copper & Aluminum Parts

Copper and aluminum are notoriously challenging materials for conventional welding due to their high thermal conductivity, high reflectivity to infrared light, and low melting points relative to their thermal diffusivity. The UK-ZDH's high-power fiber laser (up to 4000W) and precise control capabilities address these challenges:

• High power density overcomes the high reflectivity of copper and aluminum, efficiently coupling laser energy into the material
• Precise power modulation manages heat input to prevent burn-through on thin copper and aluminum components
• Short interaction times at high power densities minimize the heat-affected zone, reducing distortion and preserving material properties
• Four-axis positioning ensures optimal beam angle and focal position on copper and aluminum joint geometries, maximizing energy coupling efficiency

CNC Automation & Programming

The four-axis CNC control system of the UK-ZDH is a full-featured industrial CNC platform that provides:

Multi-Axis Coordinated Motion

All four axes are controlled simultaneously by the CNC system, enabling the execution of complex, coordinated motion sequences where multiple axes move in precisely timed coordination to follow complex 3D weld paths. This coordinated motion capability is essential for welding on curved surfaces, circular seams, and angular joints where a single axis of motion is insufficient.

Weld Program Storage & Management

The CNC system supports storage of multiple weld programs — each defining the complete sequence of axis movements, laser parameters, gas control, and timing for a specific part type. Programs can be:

• Created and edited at the machine control panel
• Developed offline using PC-based programming software and uploaded to the machine
• Recalled instantly by part number or program name for rapid changeover between different part types

Parametric Programming

Advanced users can create parametric programs where weld path geometry and process parameters are defined by variables — allowing a single program to be adapted for a family of similar parts simply by changing the variable values, rather than creating entirely separate programs for each variant.

Process Parameter Integration

The CNC program controls not just axis motion but all welding process parameters simultaneously — laser power, welding speed, focal position, shielding gas flow, and pre/post-flow timing are all integrated into the CNC program. This ensures that the complete welding process is fully automated and reproducible from the moment the cycle start button is pressed.

Safety Systems & Features

The UK-ZDH incorporates a comprehensive set of safety features appropriate for an automated laser welding system:

• Laser safety enclosure: A fully enclosed working area prevents laser radiation from escaping the welding zone during operation, protecting operators and bystanders from direct and reflected laser exposure
• Interlocked access doors: All access points to the working area are equipped with safety interlocks that immediately shut down the laser if a door is opened during operation
• Emergency stop (E-stop) system: Multiple E-stop buttons are positioned around the machine perimeter for immediate shutdown in any emergency
• Fume extraction interface: The machine is designed to interface with industrial fume extraction systems to capture and remove laser welding fumes and particulates from the working area
• Overtemperature protection: Automatic shutdown if the laser source, cooling system, or electronic components exceed safe operating temperatures
• Fault detection and alarm system: Continuous monitoring of all machine systems with automatic fault detection, alarm notification, and diagnostic information to minimize troubleshooting time

Operational Efficiency & Production Benefits

The UK-ZDH delivers a compelling set of operational and economic benefits compared to manual or semi-automatic welding:

• Dramatically reduced cycle times: Four-axis automation eliminates manual repositioning between welds — all joint positions are accessed automatically in a single cycle
• Consistent weld quality: Every weld is produced with identical parameters, eliminating the variability inherent in manual welding
• Reduced labor costs: One operator can supervise multiple UK-ZDH units simultaneously — loading parts, initiating cycles, and unloading finished assemblies — while the machines perform all welding automatically
• Minimal post-weld processing: The clean, spatter-free laser welds produced by the UK-ZDH typically require no grinding, wire brushing, or spatter removal — saving significant finishing time and labor
• Rapid changeover: Stored CNC programs enable rapid product changeover — switching between different part types requires only a program recall and fixture change, not a complete machine reconfiguration
• Scalable production capacity: Additional UK-ZDH units can be added to a production line to increase capacity linearly as demand grows — without proportional increases in floor space or staffing.