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China VMC Machine Drilling and Milling Center - 3, 4, 5 Axis CNC Machine from Reputable Suppliers and Factory
Technology Parameter
| Working Base | Items | Unit | VMC640 | VMC855 | VMC1160 | |||
|---|---|---|---|---|---|---|---|---|
| Working Base | Size | mm | 800*400 | 1000*500 | 1200*600 | |||
| Bearing capacity | kg | 500 | 500 | 1000 | ||||
| T-slot size(each) | mm | 18*3 | 18*5 | 18*5 | ||||
| Processing Range | X axis drive | mm | 600 | 800 | 1100 | |||
| Z axis drive | mm | 450 | 550 | 600 | ||||
| Y axis drive | mm | 400 | 550 | 600 | ||||
| Spindle nose to table | mm | 100-550 | 140-690 | 120-720 | ||||
| Spindle nose to column | mm | 390 | 600 | 650 | ||||
| Spindle | Taper hole | BT40 | BT40 | BT40 | ||||
| Revolving Speed | rpm | 50-8000 | 50-8000 | 50-8000 | ||||
| Max. output torque | N.m | 48 | 70 | 70 | ||||
| Spindle Motor | Kw | 11/15 | 11/15 | 11/15 | ||||
| Spindle type | Timing Belt | Timing Belt | Timing Belt | |||||
| Tool | Shank | MAS403 BT40 | MAS403 BT40 | MAS403 BT40 | ||||
| Rivet | MAS403 BT40-I | MAS403 BT40-I | MAS403 BT40-I | |||||
| Feeding | Three-axis drive motor torque(X/Y/Z) | Nm | 8/8/18 | 18/18/28 | 18/18/28 | |||
| Fast feeding velocity | m/min | X:24 / Z:24/Y:24 | X:24 / Z:24/Y:24 | X:32 / Z:32/Y:30 | ||||
| Feed Speed | mm/min | 1-18000 | 1-20000 | 1-20000 | ||||
| Power Capacity | Power Capacity | kVA | 25 | 25 | 25 | |||
| Position | Positioning Accuracy | mm | 0.01 | 0.01 | 0.01 | |||
| Repeat Positioning Accuracy | mm | 0.006 | 0.008 | 0.008 | ||||
| Machine tool volume | Height of machine | mm | 2400 | 2600 | 2800 | |||
| Floor space | mm x mm | 2300x 2100 | 3200x 2400 | 3800x 2600 | ||||
| Weight | kg | 2850 | 4800 | 6200 | ||||
product description
1. Machine Tool Overall Layout
The VMC1160 vertical machining center adopts a vertical frame structure with the column fixed to the bed. The spindle head moves vertically along the column (Z-axis), the saddle moves longitudinally along the bed (Y-axis), and the worktable moves transversely along the saddle (X-axis). Key components such as the bed, worktable, saddle, column, and spindle head are made from high-strength cast iron using resin sand molding technology. These components undergo double stress-relief aging treatment and are optimized via Pro/E and Ansys simulations to enhance structural rigidity and stability, effectively minimizing deformation and vibration caused by cutting forces.
2. Drive System
Three-axis guide ways: Equipped with imported linear rolling guides featuring low static/dynamic friction, high sensitivity, minimal high-speed vibration, no low-speed crawling, and superior positioning accuracy. This ensures excellent servo drive performance and enhances machining precision and stability.
Direct coupling: Three-axis servo motors are directly connected to high-precision ball screws via flexible couplings, eliminating intermediate components for backlash-free transmission, flexible feed, and accurate positioning.
Z-axis safety: The Z-axis servo motor includes an automatic brake function that engages during power failure to lock the motor shaft, ensuring safety.
3. Spindle Assembly
Manufactured by a specialized Taiwanese supplier, the spindle assembly offers high precision and rigidity. Equipped with P4-grade precision spindle bearings, the entire assembly undergoes dynamic balancing and run-in testing in a temperature-controlled environment to extend service life and reliability. The spindle features infinitely variable speed control within its range.
4. Tool Magazine
Robotic tool changer: Mounted on the column side, the tool disk is driven and positioned by a roller cam mechanism.
Automatic Tool Changer (ATC): Utilizes a preloaded gear cam mechanism for fast, quiet, and precise tool exchange (tool release/loading) once the spindle reaches the designated position.
5. Cutting Cooling System
High-capacity cooling: Includes a high-flow coolant pump (0.48 kW, 3 bar pressure) and large tank for efficient circulation.
Dual-mode cooling: The spindle head features switchable air/water cooling nozzles controllable via M-code or panel operation.
Cleaning: An air gun is provided for machine maintenance.
6. Pneumatic System
Filtration: The pneumatic triple unit removes impurities and moisture from the air supply to prevent component damage/corrosion.
PLC-controlled valves: Ensure rapid and precise execution of spindle tool release, center air blast, tool clamping, and air cooling.
7. Lubrication System
Centralized auto-lubrication: Delivers metered oil to guide ways and ball screws via quantitative distributors, reducing friction, improving motion accuracy, and prolonging component lifespan.
8. Machine Protection
Full enclosure: Complies with safety standards, preventing coolant splashing while ensuring operator safety and aesthetic appeal.
Guideway covers: Shield against chips and coolant ingress to protect ball screws and guides from wear/corrosion.
9. Chip Conveyor (Optional)
Y-axis split guards: Direct chips onto the bed, where an internal inclined surface guides them to a bottom-mounted chain conveyor.
Chain conveyor: Features high capacity, low noise, overload protection, and compatibility with various chip types (fragmented or coiled).
Frequently Asked Questions (FAQ)
What are the main structural differences between the VMC640, VMC855, and VMC1160 models?
The main differences lie in their working base size, axis travel, and weight capacities. The table size ranges from 800x400 mm (VMC640) up to 1200x600 mm (VMC1160). The load capacity increases from 500 kg for VMC640/855 to 1000 kg for VMC1160. Axis travel scales accordingly to accommodate larger workpieces.
How does the drive system ensure machining accuracy?
The drive system utilizes imported linear rolling guides with low friction to eliminate low-speed crawling and minimize vibration. Additionally, the three-axis servo motors are directly connected to high-precision ball screws using flexible couplings, securing backlash-free transmission and precise positioning.
What safety mechanisms are built into the Z-axis?
The Z-axis is equipped with an automatic brake function integrated into the servo motor. In the event of a power failure, the brake automatically engages to lock the motor shaft, preventing the spindle head from dropping and ensuring operator and machine safety.
What are the key specifications of the spindle assembly?
The spindle features a BT40 taper hole and operates at revolving speeds ranging from 50 to 8000 rpm. It is built by a specialized Taiwanese supplier using P4-grade precision bearings, undergoes dynamic balancing, and uses a timing belt drive system.
How does the automatic lubrication system function?
The machine features a centralized automatic lubrication system. It uses quantitative distributors to deliver metered amounts of oil directly to the guide ways and ball screws, reducing component friction and wear while maintaining long-term motion accuracy.