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CNC Milling Center
 

High-rigidity vertical and multi-axis milling centers engineered for continuous heavy material removal, mold manufacturing, and precision component production. Built with stress-relieved Meehanite cast iron beds and direct-drive spindles to maintain micro-level dimensional stability under demanding shift schedules.

 

 
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Types and Configurations

 

Configuration

Primary Application

Key Structural Advantage

3-Axis Vertical Machining Center (VMC)

Prismatic blocks, flat plates, multi-cavity plates

High structural rigidity, rapid chip evacuation via bed flushing, simple fixture setup

5-Axis Simultaneous Machining Center

Turbine blades, impellers, complex surgical implants

Single-setup machining across 5 faces, eliminates accumulated multi-fixture alignment errors

Bridge-Type / Gantry Milling Machine

Large structural frames, heavy injection molds

Extra-wide stance, high table weight capacity, symmetrical thermal column design

 

Key Specifications

 

Travel Range (X / Y / Z)

1020 x 540 x 580 mm (Standard VMC configuration).

Spindle Speed

12,000 RPM (Direct-drive standard), optional 24,000 RPM (HSK-A63 interface).

Spindle Power

18.5 / 22 kW (Continuous / Peak rating).

Tool Magazine

24-station Arm-type Automatic Tool Changer (ATC), expandable to 40 stations.

Positional Accuracy

Plus or minus 0.005 mm per full axis travel; Repeatability: plus or minus 0.003 mm.

Table Load Capacity

800 kg maximum evenly distributed load.

 

Key Features

 

Vmc850 Vertical Machining Center

Meehanite Grade FC300 Cast Bed

Annealed and naturally aged for 90 days to eliminate internal stresses and absorb high-frequency harmonic vibrations during aggressive roughing passes.

 
High Precision CNC Milling Machine Machining

Pre-tensioned C3-Grade Ball Screws

Directly coupled with absolute encoders on all axes to eliminate backlash and maintain thermal stability over extended machining cycles.

 
Vertical CNC Machining Centers

High-Pressure Coolant Through Spindle (CTS)

20-bar pump pressure clears deep-pocket chips instantly, preventing re-cutting and extending carbide insert tool life.

 
CNC Milling Metal Machine

Rigid Synchronized Tapping

Integrated encoder feedback supports thread tapping up to M24 at 6,000 RPM without thread pitch distortion.

 

 

How to Choose the Right CNC Milling Machine

Match Axis Count to Part Geometry

Select 3-axis VMCs for 2.5D prismatic components with straightforward pocketing. Choose 5-axis simultaneous machines when undercuts, angled holes, or sculptured surfaces require constant tool-normal orientation.

Evaluate Spindle Torque vs. RPM Curves

Use high-torque gear-driven spindles (>150 Nm) for heavy material removal on Inconel, tool steel, or titanium. Select high-RPM direct-drive spindles (>18,000 RPM) for aluminum thin-wall profiling and graphite electrode cutting.

Verify Structural Thermal Growth

Inspect the headstock cooling design. Machines running 24/7 require spindle oil chillers and ball-screw core cooling to restrict thermal growth to under 0.01 mm over an 8-hour shift.

 

Typical Applications

Material Compatibility: Aluminum alloys (6061, 7075), structural steel, hardened tool steel (HRC 55), titanium grade 5 (Ti-6Al-4V), and engineering plastics (PEEK, Delrin).

 

Dimensions: Part envelopes ranging from small electronic enclosures (100 x 100 mm) to heavy die blocks (1200 x 800 mm).

Tolerance Standards

IT6 to IT8 standard dimensional tolerance; surface finish capability down to Ra 0.4 um using high-feed finishing cutters.

Production Volume

Suited for medium-to-high batch production runs (50 to 5,000 units) and dedicated automated cell integration with pneumatic pallet changers.

Machining Processes

High-speed roughing, high-feed contouring, helical interpolation, deep-pocket slotting, and multi-surface finish milling.

 

Manufacturing and Quality Control

 

Foundry Casting: Meehanite grade iron cast in temperature-controlled facilities, aged naturally for 90 days before precision CNC boring operations.

 

Guideway Scraping: Hand-scraped contact surfaces on saddle and column mating areas achieve a minimum of 25 contact points per square inch for load distribution.

 

Laser Interferometer Calibration: Every axis is mapped and compensated using Renishaw laser interferometers to correct pitch, yaw, and linear positioning errors.

 

Ballbar Circular Test: Dynamic circular interpolation tested at feeds up to 5,000 mm/min to verify servo mismatch, quadrant glitches, and geometric squareness.

 

Quality Traceability: Complete factory acceptance test (FAT) report, laser calibration charts, and test cut sample coupon shipped with every machine serial number.

Machining CNC Milling

 

 
Configuration and Options

CNC Controllers

Fanuc 31i-B, Siemens Sinumerik 840D sl, or Heidenhain TNC640.

Chip Management

Hinged-belt chip conveyor paired with a side-discharge drum filter system; optional high-pressure scrap coolant washdown.

Workholding Integration

Hydraulic clamping preparation with rotary union ports wired through the center of the machining table.

Tool and Workpiece Measurement

Renishaw OMP60 optical spindle probe and NC4 laser tool setter for automated broken tool detection and in-cycle offset updates.

 

 

FAQ

 

Q: What is the maximum allowable weight on the table, and how does off-center loading affect machining accuracy?

A: The standard table supports up to 800 kg of evenly distributed weight. Exceeding this limit or concentrating more than 60 percent of the load on a single quadrant accelerates guideway wear and introduces micro-deflections in the Z-axis column under heavy Z-axis thrust loads.

Q: How does the machine prevent thermal growth during continuous 24-hour production runs?

A: The spindle housing is integrated with a closed-loop oil chiller circulation system that maintains operating temperature within plus or minus 1 deg C of ambient baseline. Additionally, hollow-core ball screws are cooled internally to restrict linear thermal expansion to less than 0.008 mm over 12 continuous hours.

Q: What electrical power supply requirements are necessary for the standard 18.5 kW spindle configuration?

A: The machine requires a 3-phase, 380V (plus or minus 10 percent), 50/60 Hz heavy-duty electrical drop with a minimum service capacity of 45 kVA. A stable voltage stabilizer is strongly recommended to protect sensitive CNC servo drives from grid fluctuations.

Q: Can the machine be integrated into an automated pallet pool or robotic loading cell?

A: Yes. The side-opening pneumatic door interface and internal M-code relay expansion slots support direct integration with 2-axis automatic pallet changers (APC) or external 6-axis articulated robot loading systems without modifying the base PLC ladder logic.

Q: What routine maintenance schedule is required to maintain positional accuracy over years of operation?

A: Operators must grease the linear guideway blocks and ball screw fittings every 80 operating hours using ISO VG 68 slide way oil. The automatic lubrication pump reservoir and coolant concentration levels must be inspected daily before shift startup.

Q: What is included in the standard Factory Acceptance Test (FAT) documentation package?

A: The documentation package includes the Renishaw laser alignment certificate, ballbar circularity test plots, spindle runout measurement logs, electrical wiring schematics, PLC address lists, and an operational compliance checklist signed by the lead assembly metrologist.

 

Shandong TaoFong CNC Machine Tool Co., Ltd. is one of the most professional CNC milling machine manufacturers and suppliers in China, featured by quality products and good price. Please rest assured to buy durable CNC milling machine for sale here from our factory. Customized orders are welcome.

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