The machine is specialized in machining cylindrical deep-hole workpieces, such as spindle holes for machine tools, various mechanical hydraulic cylinders, cylindrical through-holes for cylinders, blind holes and stepped holes. The processing accuracy can reach IT7~IT8 or abo...

The machine is specialized in machining cylindrical deep-hole workpieces, such as spindle holes for machine tools, various mechanical hydraulic cylinders, cylindrical through-holes for cylinders, blind holes and stepped holes. The processing accuracy can reach IT7~IT8 or above, and the surface roughness can reach Ra0.4μm. The machine tool can not only undertake drilling and boring, but also can perform burnishing processing, and the internal chip removal method is used for drilling. The machine bed is rigid and has excellent precision. The spindle has a wide range of speeds, and the feed system is driven by an AC servo motor, which can adapt to the needs of various deep hole machining processes. The pressure head is fastened and the workpiece is tightly clamped with hydraulic device. The instrument display is safe, stable and reliable. Pressure head and job clamping is hydraulic control.

SPECIFICATION

TECHNICAL DATA

T2120

capacity

Max Boring diameter

φ200mm

Max drilling diameter

φ80mm

Max.boring depth

1000-15000mm

Workpiece clamped dia.range

φ60-φ300mm

  SPINDLE

Height from spindle center to bed

350mm

Spindle bored diameter

φ75mm

Taper of spindle bore

85mm  1:20

Range of spindle bore

61-1000r/min     12steps

  FEEDS

Feed speed range(infinite)

5-600mm/min

Carriage rapid-moving speed

2m/min

  MOTORS

Main motor power

22KW

Hydraulic pump motor power

1.5KW

Carriage rapid motor power

3KW

Feed motor power

3.7KW AC servo

Cooling pump motor power

5.5KW

  OTHERS

Rated prdssure for cooling system

0.36Mpa

Flow of cooling system

300L/min

Rated working pressure for hydraulic system

6.3Mpa

Max.axial force for pressure head

68KN

Max.clamping force

by pressure head    on workpiece

20KN

Machine precision：

Roundness……………………………………………≤0.02㎜

Cylindricity…………………………………………≤0.035/500㎜

Machining precision…………………………………………ⅠT8～ⅠT10

Rounghness（drilling）…………………………………≤Ra3.2～12.5μm

Rounghness（boring） ……………≤Ra1.6～3.2μm（depending on workpiece material）

Rounghness（burnishing）………………………………≤Ra0.4μm

Straightness  less than 0.15/1000

Hole deviation  ≤0. 5/1000

Machining efficiency：

cutting speed ：normally 50-100m/min

Feed speed ;   normally 10-100mm/min

Maximum stock removal when boring：not bigger than  20mm