T2120 Deep Hole Drilling and Boring Machine

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.

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