NTR-18NC / TWO DIES ROLLING

Thread Rolling Machine

The Mega's heaviest thread/profile forming machine at the moment is equipped with swivelable roller shafts. This ensures optimum capacity and use in making threads and axially parallel profiles in the through-feed process. However, short cylindrical parts (especially thread pins) can also be rolled in the through-feed process. For this special through-feed process automatic feed of the work is necessary.
This machine can also be used in the in-feed process; for this special there is no axial movement of the workpiece.

 

SPECIFICATIONS ITEM NTR-18NC
Range of Thread Max. diameter 
 Φ60 mm
Min. diameter
 Φ6 mm
Pitch
 0.6-4 mm
Range of length
(in-feed)
 150 mm
Range of length
(thru-feed)
 Free
Speed Range 3-50 RPM
Rolling Dies Max. diameter  Φ150 mm
Bore diameter  Φ54 mm
Width range  35~150 mm
Key way  12 mm
Distance of Dies Spindle Max.diameter  210 mm
Min.diameter  150 mm
Max. Rolling Pressure  18 Tons
Main Power  5.5KW x 2
Coolant Power  0.19KW
Infeed Servo Motor Power  7.5KW
Height from Floor to Spindle Center  936 mm
Floor Space Required  1220L x 1480W mm
Over Height  1795 mm

 

Special features of MEGA MACHINE CNC thread rolling machine
A. Machine Structure:
1. Heavy duty tention bar and rigid base cabinet.
2. Heavy duty construction holds distance between main spindle housing at rolling load up to 30 tons with digital read-out control unit less than 0.01 mm
B. Synchronized Control:
MEGA has developed 6-axis synchronization
1. R.H. spindle rotational positioning.
2. L.H. spindle rotational positioning.
3. Dies feed rate control.
4. R.H. spindle helix angle tilt control.
5. L.H. spindle helix angle tilt control.
6. Work piece positioning control.
C. Spindle Helical Tilt:
1. Helix angle of main spindle is controlled by semi-close loop control.
2. Helix angle can be adjusted by 0.001 degree, the most accurate precision among the industry.
D. Die Feed Rate:
1. Full close loop infinitely controls feed rate between two spindles.
2. Digital control of pitch matching
3. Complicated workpiece eg. 2 or 3 different threads/ spline knurling gears can be rolled at the same time.