Why Choose DeepLink for Custom CNC Machining Services

DeepLink Metal Fab operates 40+ CNC machining centers including 3-axis, 4-axis, 5-axis vertical and horizontal machining centers, CNC turning centers, and Swiss-type lathes, delivering plus-minus 0.005mm precision on metal and plastic parts up to 1500mm in size. As an ISO 9001:2015 certified custom CNC machining service provider in China, we handle rapid prototyping (2-3 day turnaround) through high-volume production for global OEM clients in automotive, aerospace, medical device, robotics, and semiconductor industries.

CNC Machining Capabilities

• Machining Technology: 3-axis CNC milling, 4-axis CNC milling, 5-axis simultaneous machining, CNC turning, Swiss-type turning, mill-turn, wire EDM, sinker EDM
• Materials: Aluminum (6061/7075/5052), stainless steel (303/304/316/17-4PH), carbon steel, brass, copper, titanium (Grade 2/5), Inconel, engineering plastics (PEEK/POM/PTFE/nylon)
• Dimensional Tolerance: plus-minus 0.005mm on precision features
• Surface Roughness: Ra 0.4 micrometers achievable with fine milling and turning
• Part Size Range: 5mm to 1500mm
• Supported CAD Files: STEP, STP, SLDPRT, IGES, X_T, DXF, DWG
• Lead Time: 2-3 days for prototypes, 10-20 days for production
• Order Volume: 1 piece to 100,000+ units per year

What is CNC Machining?

CNC machining (Computer Numerical Control machining) is a subtractive manufacturing process that uses computer-programmed cutting tools to remove material from a solid workpiece to produce precision parts. Unlike additive processes (3D printing) or formative processes (casting, forging), CNC machining delivers unmatched dimensional accuracy, surface finish, and material versatility, making it the gold standard for functional prototypes, end-use production parts, and mission-critical components.

Common CNC Machining Methods

• CNC Milling: Rotating multi-point cutting tool removes material from a stationary workpiece. 3-axis for prismatic parts, 4/5-axis for complex geometries. Ideal for brackets, housings, structural components.
• CNC Turning: Rotating workpiece contacted by stationary cutting tool. Best for cylindrical parts like shafts, bushings, pins, connectors, and hydraulic components.
• 5-Axis Simultaneous Machining: Cutter and workpiece move on 5 axes simultaneously. Enables complex contoured surfaces in one setup: impellers, turbine blades, medical implants, aerospace structures.
• Swiss-Type Machining: Sliding headstock lathe holds workpiece close to cutting tool. Ideal for small-diameter precision parts (below 32mm): watch components, medical screws, connectors.
• Wire EDM: Electrical discharge cuts hard metals with plus-minus 0.005mm accuracy. Used for hardened tool steel, carbide, and titanium features.

Key Advantages of Custom CNC Machining

• Ultra-High Precision: plus-minus 0.005mm tolerance, Ra 0.4 micrometers surface finish
• Material Versatility: Works with virtually any machinable metal or engineering plastic
• No Tooling Cost: Direct CAD-to-part production ideal for prototypes and low-medium volume
• Complex Geometries: 5-axis capability enables features impossible with other processes
• Scalable Production: From 1-piece prototype to 100,000+ mass production with same equipment

Common Applications of Custom CNC Machined Parts

Custom CNC machining serves industries including automotive (engine components, transmission parts, brake assemblies), aerospace (structural brackets, engine parts, landing gear components), medical devices (surgical instruments, implants, diagnostic equipment housings), robotics (gear housings, joints, precision arms), semiconductor (chamber components, wafer handlers, precision fixtures), and industrial equipment (hydraulic manifolds, custom fixtures, machinery components).

How DeepLink Custom CNC Machining Service Works

From CAD file upload to precision-machined parts delivered worldwide, our custom CNC machining workflow ensures accuracy, speed, and full quality traceability.

1. Upload CAD Files and Get Instant Quote

Upload 3D CAD files (STEP, STP, SLDPRT, IGES, X_T) through our secure quote portal. Our engineering team responds within 24 hours with a detailed quotation including material, tolerance, surface finish, quantity pricing, and lead time.

2. Free DFM (Design for Manufacturing) Analysis

Our engineers review every drawing for CNC manufacturability, checking tool accessibility, minimum feature size, wall thickness, thread specifications, and tolerance stack-up. We recommend design optimizations that reduce cost without compromising your specifications.

3. Material Sourcing and Certification

Certified raw materials from qualified mills (aluminum, stainless steel, titanium, engineering plastics) with full material certificates (MTC) and lot traceability from bar stock to finished part.

4. Precision CNC Machining Production

3-axis to 5-axis CNC machining centers, CNC turning centers, and Swiss-type lathes with in-process CMM probing deliver plus-minus 0.005mm accuracy. Automated pallet changers and bar feeders enable lights-out production for high volumes.

5. Multi-Stage Quality Inspection and Global Shipping

Every batch undergoes dimensional inspection using CMM, optical profilometer, surface roughness testers, and thread gauges. Full inspection reports (FAIR/PPAP/ISIR) provided on request. DDP shipping to 50+ countries via DHL, FedEx, or sea freight for bulk orders.

Available Surface Finishes for Custom CNC Machined Parts

DeepLink offers comprehensive post-machining surface finishing services to enhance corrosion resistance, appearance, wear performance, and functional properties of your custom CNC machined parts.

Anodizing (Aluminum)

Type II clear/color anodizing (5-25 micrometers) for cosmetic and mild corrosion protection. Type III hard anodizing (25-50 micrometers) for wear-critical applications. Custom color matching including black, red, blue, gold, clear, and RAL colors.

Bead Blasting and Media Blasting

Glass bead, aluminum oxide, or ceramic media blasting produces uniform matte finish removing tool marks. Standard cosmetic finish for consumer electronics, medical, and aerospace parts before anodizing.

Plating

Nickel plating, chrome plating, zinc plating, tin plating, silver plating, and gold plating for corrosion protection, wear resistance, electrical conductivity, and decorative finish on steel and brass machined parts.

Polishing and Passivation

Mechanical polishing to mirror finish (Ra 0.05 micrometers) for stainless steel and titanium parts. Chemical passivation restores protective chromium oxide layer on stainless steel for maximum corrosion resistance.

Heat Treatment

Hardening, tempering, annealing, and stress-relieving to achieve target hardness (HRC 30-60) for tool steel, alloy steel, and heat-treatable aluminum. Post-heat treatment machining for tight tolerance features.