Dual Cut 4+2 Axis End Miller Thermal Break Aluminium Production Line

This double-cut 4+2 shaft end milling thermally broken aluminum profile production line was manufactured by Lebulang Machine at its factory in Jinan, China. The company has been producing aluminum alloy door and window equipment since 1996, and the production line is sold directly from the factory. OEM/ODM configurations are accepted. This end miller is designed for high‑volume production of thermal break profiles, using two independent spindles that cut in both directions without an idle return stroke. A 4+2 axis CNC system positions the spindles and switches their orientation between 0° and 90° automatically. The cast‑iron base, linear guide rails, and ball‑screw drives keep positioning accuracy within ±0.02 mm, and a 7‑inch touchscreen with pre‑loaded programs manages the settings.

Dual Cut 4+2 Axis End Miller Thermal Break Aluminium Production Line

• Dual‑cut system: Two independent spindles, one forward and one reverse, allow cutting in both directions along the profile. The milling cycle does not require an idle return stroke, which reduces overall cycle time compared with single‑spindle machines that cut in one direction only.
• 4+2 axis CNC control: Four servo axes manage linear profile feeding and positioning; two additional rotary axes switch the spindles between 0° and 90° automatically. This layout permits end milling, tenon cutting, and notching on mullions, reinforced mullions, and frame profiles without manual tooling changes.
• Thermal break aluminum compatibility: The cutter geometry and clamping arrangement are designed for thermal break profiles, where the insulating strip must remain intact and the milled surfaces must provide tight joint fit for good thermal performance in the finished window or door assembly.

Dual Cut 4+2 Axis End Miller Thermal Break Aluminium Production Line

• Precision and stability: The machine base is cast iron, providing mass to damp vibration during milling. Linear guide rails and ball‑screw drives on the positioning axes maintain repeatability within ±0.02 mm under consistent operation. Pneumatic clamps with rubber‑faced jaws hold the profile securely without marking its surface.
• Operation and programming: A 7‑inch touchscreen interface (ESTUN or Schneider CNC system) stores commonly used profile programs. The operator can recall a preset or enter new dimensions directly. An optional QR code scanning function can automatically load the corresponding machining program, reducing setup time and the potential for input errors.

Dual Cut 4+2 Axis End Miller Thermal Break Aluminium Production Line Applications

• Thermal break aluminum door and window mullion / transom end milling
• Frame and sash profile tenon and groove processing
• Curtain wall aluminum profile end face machining
• High‑volume aluminum window production lines

How It Works

The Dual Cut 4+2 Axis End Miller Thermal Break Aluminium Production Line operates with the operator loading a thermal break aluminum profile into the pneumatic clamps. The 4+2 axis CNC control positions the spindles at the appropriate angle (0° or 90°) and moves them along the linear axes to mill the profile ends. One spindle cuts in the forward pass, and the second spindle, rotating in the opposite direction, completes the cut on the return pass — or both can machine different faces simultaneously, depending on the program. Milling depth, tenon length, and groove dimensions are set via the touchscreen. The dual‑cut action means the spindles are engaged throughout the cycle, and the profile is ready for the next processing step once the clamps release.

Key Components

• Twin spindles (2 × 3 kW): Each spindle motor delivers 3 kW at 2800 rpm and accepts milling cutters from φ230 mm to φ350 mm. One spindle is configured for clockwise rotation, the other for counter‑clockwise, enabling bidirectional cutting without repositioning.
• 4+2 axis CNC system: The CNC controller (ESTUN or Schneider) coordinates four linear servo axes (profile feed and tool positioning) and two rotary axes (spindle angle switching). Programs can be loaded via USB, touchscreen, or optional QR code scanner.
• Cast‑iron base and linear guides: The heavy cast‑iron bed provides a stable foundation. Linear guide rails and precision ball screws ensure smooth, accurate axis movement with minimal backlash.
• Pneumatic clamping with rubber protection: Clamps hold the profile securely during milling. The contact surfaces are fitted with rubber pads to prevent surface scratches and deformation of the aluminum.
• Dust extraction port: A connection point for a dust extraction system helps keep the work area clear of aluminum chips during continuous operation.

Technical Specifications

• Power Supply: 380V / 50Hz / 3Ph
• Total Power: 8.8 kW (2 × 3 kW spindle motors + servo drives)
• Spindle Speed: 2800 rpm
• Milling Cutter Diameter: φ230--φ350 mm (customizable)
• Working Air Pressure: 0.5--0.8 MPa
• Max Milling Depth: 80 mm
• Max Profile Size: Width ≤120 mm, Height ≤150 mm
• Machine Dimension: 1700 × 800 × 1500 mm
• Weight: ≈ 450 kg

Factory & After‑Sales

Lebulang Machine has operated its Jinan production site since 1996, manufacturing window, door, and profile processing machines. The Dual Cut 4+2 Axis End Miller Thermal Break Aluminium Production Line ships directly from the factory with CE and ISO certificates. One‑year structural warranty is standard. Remote installation walkthroughs, training media, and online support are included free of charge. Consumables — cutters, jaws, seals — are kept in stock. On‑site commissioning can be arranged.

FAQ

Q: Can your equipment handle both window/door profiles and aluminum curtain wall profiles?

A: Yes. Our factory produces intelligent machines for doors, windows, and curtain wall fabrication. For example, the G20/G50 workstation handles full‑process machining, while our LBL‑brand saws cut profiles at angles from 45° to 135°. We recommend equipment based on your specific production needs.

Q: Is the operation complex? Do I need many skilled workers?

A: We design the machines to be operated with minimal training. The CNC system stores preset programs, and the interface uses straightforward menus. No advanced programming knowledge is required. We provide free training materials, remote guidance, and installation videos to help your staff become proficient quickly.

Q: What about processing accuracy and long‑term stability?

A: We use cast‑iron machine bodies, linear guide rails, and ball‑screw drives with servo motors. Core components are sourced from internationally recognized suppliers. Diamond‑tipped tools and automatic lubrication systems help maintain cutting quality and extend component life, supporting consistent accuracy over time.

Q: What after‑sales service do you provide?

A: We offer 24‑hour online support, one‑year warranty, and lifelong maintenance service. Remote troubleshooting via video call is available. Should an on‑site visit be necessary, we can arrange it at an additional cost. Spare parts are kept in stock and can be shipped quickly.