Large CNC machining services | One stop solution for large-sized and high-precision components

Large scale CNC machining is an advanced manufacturing solution for ultra large and high-precision metal components. With the continuous improvement of precision and complexity requirements for large structural components in industries such as aerospace, new energy vehicles, energy equipment, and medical devices, large-scale CNC machining has become an indispensable core capability for high-end manufacturing.

We provide one-stop CNC machining services for large parts from material procurement to final inspection, relying on 30 years of industry experience and advanced large-scale machining equipment clusters to deliver large precision parts that meet the strictest tolerance requirements to global customers.

1、 Overview of Processing Capability

Capability parameter specifications Maximum milling size 4500 × 550 × 700 mm 

Dimensional tolerance (standard) ± 0.10 mm 

Dimensional tolerance (key feature) up to ± 0.02 mm 

Geometric accuracy Flatness/Parallelism ≤ 0.2 mm/1000 mm 

Surface roughness (standard) Ra 3.2 μ m 

Surface roughness (precision) up to Ra 0.8 μ m

2、 Core processing technology

Large CNC milling 

Capable of handling multiple features within complex geometric shapes and large work ranges. The optimized clamping scheme reduces the number of relocations and maintains strict dimensional relationships throughout the entire component. Suitable for aircraft structural components, large molds, new energy vehicle battery trays, etc.

Surface treatment

Adjust key features to the final size and surface requirements. The completed components have been validated and can be directly used for assembly or subsequent processes. 

3、 Machinable materials 

We process various engineering materials and can assist in selecting the most cost-effective solution - balancing performance, processability, tolerance requirements, and budget. 

Aluminum alloy 

Lightweight, sturdy, and easy to process. Common grades include: 6061-T6 (universal type), 7075-T6 (high-strength), 2024, 5052, 5083, 6063, 6082, etc.

4、 Five axis linkage machining capability

We are equipped with a five axis linkage machining center. The five axis linkage capability can complete the complete processing of complex multi-faceted features in a single clamping.

The core advantages of five axis machining:

Single clamping completes multi-faceted processing: eliminates cumulative errors caused by multiple clamping

Shorten production cycle: reduce inter process flow and waiting time

Improving surface quality: optimizing tool paths to achieve better surface smoothness

Dealing with complex geometry: capable of handling features such as deep cavities, inverted loops, and curved surfaces that cannot be completed in three axes

The high torque spindle, combined with advanced chip removal and thermal management systems, maintains precision stability throughout the entire long cycle machining process.

5、 Quality Control System

Testing equipment 

Coordinate Measuring Machine (CMM), suitable for full-size inspection of large parts 

Testing Process 

Process inspection: real-time size monitoring during the machining process

First Article Inspection Report: Includes complete dimensional data, geometric dimensions and tolerance (GD&T) analysis

Surface smoothness certification: ensuring surface quality that meets design requirements

Material traceability document: The source of materials throughout the entire process can be traced

Final size report: Provide a complete inspection report along with the goods

Our machining center is equipped with a thermal compensation protocol, which can maintain repeatable accuracy on all part dimensions regardless of changes in ambient temperature.

6、 Typical application industries

Aerospace

Wing ribs, fuselage frame, floor beams, engine compartment components; Engine casing, titanium alloy structural components; Drone fuselage and fairing.

new energy vehicle

Battery tray panel, motor housing, structural subframe; Large scale integrated die-casting machining.

energy equipment

Large structural components of wind power generation equipment; Large components of power generation, petrochemical facilities, and renewable energy systems.

Medical equipment

Large scale medical imaging equipment framework; Surgical robot structural components.

Semiconductor and Precision Equipment

Vacuum chamber components, lithography machine frame components, and wafer processing system structural components.

Mold manufacturing

Large injection molds and die-casting molds; Complex curved surface molds.

7、 Quality certification

We strictly adhere to international quality management standards: 

ISO 9001 version 2015: Quality Management System Certification

8、 Why choose us

One-stop service 

The entire process, from material procurement, rough machining, precision machining to surface treatment, assembly, and packaging, is managed by one team. No need to coordinate multiple suppliers, saving time and management costs.

20 years of industry experience

Each project is reviewed based on size, weight, material, geometric shape, and key requirements. The engineering team coordinates appropriate equipment, processing sequence, and testing plan to deliver finished products that meet the requirements of the drawings.

Global Service Network

We have served customers in over 120 countries and regions worldwide, with rich export

experience and compliance capabilities.

cost competitiveness 

The optimized process flow and economies of scale enable us to provide competitive prices while maintaining high precision.

Flexible production scale

Support single piece customization, prototype production, small batch production, and batch repetitive production, adapting to various needs from small batch multi variety to large-scale production.

9、 How to start your project

Submit drawings or 3D models: Provide your part design files (in STEP, IGS, DWG formats, etc.)

Free Design for Manufacturability (DFM) Analysis: Our engineering team provides DFM analysis, including material selection, clamping schemes, and processing strategy recommendations

Quotation and delivery confirmation: Provide accurate quotation and delivery time based on detailed process plan

Production and process control: Full process quality tracking and process inspection

Delivery and Reporting: Provide complete inspection reports and quality documents along with the goods

Frequently Asked Questions

 Q: What is the maximum part size you can process? 

Answer: The maximum milling size is 4500 × 550 × 700mm. 

Q: What level of critical tolerance can be achieved? 

Answer: The standard tolerance is ± 0.10 mm, and key features can reach ± 0.05 mm. For five axis precision machining, some features can reach ± 0.02 mm.

Q: What materials do you support? 

Answer: Aluminum alloys (6061, 7075, 2024, 5083, etc.), stainless steel, carbon steel, etc 

Q: What is the minimum order quantity? 

Answer: There is no minimum order quantity limit. We support single piece customization, prototype production, small and large batch production. 

Q: Do you provide surface treatment services? 

Answer: Yes. We provide a full range of surface treatment services including anodizing (Type II and Type III), powder coating, electroplating, passivation, polishing, sandblasting, and laser engraving. 

Q: What quality certifications do you have? 

Answer: We have obtained ISO 9001 quality system certification. 

If you need customized large-scale CNC machining solutions, please contact our engineering team, and we will provide you with professional DFM analysis and quotation within 24 hours.