CNC Turning-Machining Centres  Manufacturers, Traders, Suppliers

Ningbo Yinzhou Gain Machinery Co.,Ltd has 3 axis and 4 axis CNC, inclined rail machining center, automatic mechanical arm.

Processing including cutting, turning, milling, grinding, tapping.Tolerance can be made around 0.005-0.01mm.

Automobile accessory, Agricultural equipment, General manufacturing,

EUMASPINNER's CNC Turn mill lathe machines combine turning and milling functions to precisely machine complex rotating parts, improving efficiency and accuracy.

Technologies

Metalworking, automotive, aerospace, and manufacturing sectors.

CNC Machining (Computer Numerical Control Machining) is a manufacturing process that uses pre-programmed computer software to control machine tools (e.g., mills, lathes, routers) to remove material from a workpiece, creating precise components with high accuracy and repeatability. This subtractive manufacturing method is widely used for producing custom parts with complex geometries, tight tolerances, and high surface finishes, suitable for both prototyping and low-to-medium volume production.
Key characteristics of CNC machining include:

• High Precision: Capable of achieving tolerances as tight as ±0.001mm (0.00004 inches) for precision components.
• Material Versatility: Works with a wide range of materials, including metals (aluminum, steel, titanium, copper) and non-metals (plastics, composites, wood).
• Design Flexibility: Can machine intricate shapes, deep cavities, threads, and fine details that are difficult to produce by hand or with manual tools.
• Automation: Reduces human error through computer-controlled operations, ensuring consistency across multiple parts.

1. CNC Machining Processes

• Milling:

• End Milling: Uses rotating multi-tooth cutters to machine flat surfaces, slots, and 3D contours (3-axis, 4-axis, or 5-axis machines for complex geometries).
• Face Milling: Removes material from flat surfaces to achieve smooth finishes.
• Plunge Milling: Creates deep cavities or holes by plunging the cutter vertically into the workpiece.

Turning/Lathe Machining:

• Rotates the workpiece while a stationary tool removes material to produce cylindrical parts (shafts, bushings, threads).
• Includes CNC lathes with live tooling for milling operations on rotational parts.

Drilling & Tapping:

• Drills holes and taps threads for fastener installation (automated via CNC programs for precise positioning).

Grinding:

• Uses abrasive wheels to achieve ultra-precise dimensions and mirror-like surface finishes (e.g., for aerospace components).

Electrical Discharge Machining (EDM):

• Non-traditional machining using electrical discharges to erode conductive materials, ideal for hard metals and intricate molds.

2. Materials

• Metals:

• Aluminum Alloys: Lightweight, corrosion-resistant, easy to machine (common in aerospace and automotive parts).
• Steel (Carbon/Stainless): High strength, used for structural components (e.g., gears, shafts).
• Titanium Alloys: Strong, heat-resistant, and lightweight (critical for aerospace and medical implants).
• Copper/Bronze: Excellent conductivity, used for electrical components.

Non-Metals:

• Plastics: ABS, PVC, PEEK, Acrylic – ideal for prototypes and low-weight parts (e.g., gears, housings).
• Composites: Carbon fiber, fiberglass – machined for high-strength, lightweight components (aerospace, sports equipment).
• Ceramics: Machined for high-temperature and wear-resistant applications (industrial tools, electronics).

3. Design Considerations

• Tolerances: Specify achievable tolerances based on material and machine type (e.g., ±0.05mm for general machining, ±0.001mm for precision EDM).
• Tool Accessibility: Avoid deep, narrow cavities or sharp internal corners that may require specialized tools.
• Surface Finish: Define Ra values (e.g., 1.6μm for milled surfaces, 0.2μm for ground surfaces) and select appropriate machining strategies.
• Material Grain Direction: Align part features with the material’s grain to maximize strength (critical for metal components).
• Tool Path Optimization: Minimize material waste and cycle time through efficient CNC programming (e.g., using CAM software like Mastercam, Fusion 360).

4. CNC Machine Types

• 3-Axis Machining Centers: Basic milling machines for 2D and simple 3D parts.
• 4-Axis/5-Axis Machining Centers: Add rotational axes (A, B, or C axes) for complex 3D contours and simultaneous multi-surface machining.
• CNC Lathes: Single-spindle or multi-spindle machines for rotational parts, with optional Y-axis for advanced turning/milling combinations.
• Swiss-Type Lathes: Specialized for small, high-precision parts (e.g., medical screws, watch components) with minimal material waste.

5. Quality Control

• Dimensional Inspection:

• CMM (Coordinate Measuring Machine) for complex geometries.
• Calipers, micrometers, and optical comparators for critical dimensions.

Surface Finish Testing: Profilometers to measure Ra/Rz values.Material Testing: Tensile, hardness, and metallographic tests to ensure material properties meet specifications.Process Validation: First-article inspection (FAI) and in-process checks to verify compliance with ISO 9001, AS9100 (aerospace), or IATF 16949 (automotive) standards.

1. Aerospace & Aviation

• Structural components: Wing brackets, engine mounts (titanium/aluminum alloys for strength and weight reduction).
• Turbine parts: Blisks (bladed disks) and compressor components (5-axis machining for intricate airfoil shapes).
• Avionics: Electronic enclosures and heat sinks (precise machining for tight fits and thermal management).

2. Medical Devices

• Implants: Hip/knee prosthetics, spinal screws (titanium/PEEK for biocompatibility, machined to strict tolerances).
• Surgical instruments: Forceps, scalpels, and endoscopic components (stainless steel for corrosion resistance and hygiene).
• Diagnostic equipment: Custom housings and precision parts for MRI/CT scanners.

3. Automotive Industry

• Engine components: Cylinder heads, transmission gears (steel/aluminum, machined for high tolerances and surface finish).
• Chassis parts: Suspension brackets, steering components (aluminum for lightweighting, steel for load-bearing structures).
• Prototyping: Low-volume production of custom parts for concept cars or racing applications.

4. Electronics & Semiconductors

• Heat sinks: Complex aluminum/copper fins for efficient thermal dissipation in servers and consumer electronics.
• PCB fixtures: Precision-machined brackets and enclosures for printed circuit boards (PC/ABS, aluminum).
• Semiconductor tools: Wafer carriers and masks (ultra-precise machining for nanometer-level tolerances).

5. Industrial Equipment

• Heavy machinery parts: Gearboxes, valves, and pump housings (cast iron/steel for durability).
• Tooling: Injection mold cores/cavities, extrusion dies (hardened steel machined via EDM for long life).
• Robotics: Joints, links, and end-effectors (aluminum/composites for high-speed, low-inertia motion).

6. Consumer Goods

• Electronics housings: High-end smartphone frames (anodized aluminum, machined for seamless finishes).
• Sporting goods: Golf club heads (titanium), bicycle components (carbon fiber/aluminum for strength and weight).
• Luxury products: Watch cases, jewelry components (tungsten, stainless steel, or precious metals).

7. Energy & Renewable Resources

• Oil & gas: Valves, connectors, and pipeline components (nickel alloys for corrosion resistance in harsh environments).
• Wind energy: Gearbox parts, turbine brackets (steel/magnesium, machined for large-scale structural integrity).
• Solar energy: Mounting brackets and precision components for solar tracking systems (aluminum for weather resistance).