Machine Tools｜Large Machines｜Double column type Milling Machines
Large Precision Machines MVR-Fx series
The companies handling the product：Nidec Machine Tool Corporation
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The MVR-Fx series improves customer productivity with zero step, zero form errors, and zero hand finishing.
MVR30Fx
- Distance between columns (mm)
2,550 - Distance from table top to spindle nose (mm)
std. 1,650
opt. 2,000
MVR35Fx
- Distance between columns (mm)
3,050 - Distance from table top to spindle nose (mm)
std. 1,650
opt. 2,000
Features
Machine structure to remove heat, vibration and misregistration
- (1)High Rigidity Large Crossrail
- Crossrail has a wide cross-section to prevent deformation by saddle movement.
- (1)High Rigid Double Column without overhang
- Overhang is eliminated to remove vibration during machining.
- (2)3 Rows of Linear Guides
- An additional linear guide is placed in the center section of the table to prevent table deflection when a workpiece is placed on it.
- (2)X-axis Twin Ball Screw
- X-axis drive is highly rigid with twin ball screws to move heavy workpieces and restrain table from yawing.
Cooling Ball Screw
Deformation of ball screws is reduced by cooling the motors, support bearings and ball screw nuts, eliminating any heat generation.
Zero Gap Drive System
Servomotors are directly connected to both ends of ball screws.
"Zero Gap Drive System" prevents the loss of motion accuracy from backlash and minimizes the wobble in machining path.
- (3)High Rigidity Synmetrical Structure
- Synmetrical structure is applied to prevent deformation of main machine.
- (3)Thermally Stabilized Column
- Thermally stabilized column is standard, reducing the affect of temperature change.
- (3)Wide Columns
- Wide columns with 4 rows of linear guides placed on the front side and inside on the double columns support force at acceleration and deceleration and cutting reaction force rigidity.
Example of flat surface machining with a large number of tools
Max. step from reference surface
5μm
The precision spindle and the stable mechanical structure that supports it make it possible to eliminate misalignment of the tool edge position and reduce form errors.
Visionplus® Tool - Optical Image Type Automatic Tool Measurement System
Non-contact measurement system
At first, the rotating tool approaches the view area of the high-resolution CCD camera. The camera captures a silhouette of the tool with LED light and records the contour accurately without making contact. This system measures the detected cutting edge continuously and can keep checking the behavior of lowest point of the tool in real time. Also it determines independently if the machine, holder and tool are thermally stabile and performs tool length correction automatically.
Specifications
| Item / Model | MVR30Fχ | MVR35Fχ | ||
|---|---|---|---|---|
| Table | Working area | Width (mm) | 2,000 | 2,500 |
| Length (mm) | 3,000 (opt. 4,000, 5,000) |
4,000 (opt. 5,000) |
||
| Loading capacity (ton/m) | 20 | 25 (opt. 30) | ||
| Throat clearance between columns (mm) | 2,550 | 3,050 | ||
| Distance from spindle end to table surface (mm) | 1,650 (opt. 2,000) | |||
| Ram | Ram size (mm) | □420 | ||
| Spindle speed (min-1) | 20,000 | |||
| Spindle motor output (continuous/30 min) (kW) | 18.5/22 | |||
| ATC tool storage capacity (pcs) | 40 (opt. 60, 80, 100) | |||
| Machine weight (kg/working area mm) | 55,400/3,000 | 64,300/4,000 | ||
