TOS VARNSDORF WHN 13.8.A horizontal boring machine

TOS VARNSDORF WHN 13.8.A horizontal boring machine was built in 1979 in Czechoslovakia by TOS VARNSDORF a. s. The machine is used for precision machining of workpieces with complex geometry and heavy weight. All complex machining operations, such as drilling, milling, boring and threading, are performed by a powerful spindle with a diameter of 130 mm. The extensive machining capabilities combined with the high degree of reliability and rigid design make the TOS VARNSDORF WHN 13.8 boring machine the perfect choice for companies that place an emphasis on producing high-quality workpieces. In 2004, the machine underwent a major overhaul, during which the original manual control was replaced with a HEIDENHAIN CNC controller. The TOS VARNSDORF boring machine weighs 32000 kg.

Technical specifications of the TOS VARNSDORF WHN 13.8.A drilling and milling machine

• CNC controller: HEIDENHAIN iTNC 530
• feed in the X/Y/W axis: 2000/2000/1250 mm
• feed rate (1st series, all groups): 2.5-160 mm/s
• feed rate (2nd series, all groups): 50-3200 mm/s
• rapid traverse (all groups): 3200 mm/s
• micro feed rate (all groups): 5 mm/s
• work table dimensions (L x W): 1800 x 1800 mm
• maximum workpiece weight: 12 t
• stroke range (metric thread, number of steps 20): 2-24 mm
• stroke range (Whitworth thread, number of steps 24): 12-1 gear wheels/
• maximum spindle rotational speed: 900 rpm
• spindle diameter: 130 mm
• maximum empty spindle diameter (7:24 centering taper): 180 mm
• empty spindle flange diameter: 280 mm
• spindle extension: 800 mm
• spindle drive power: 38 kW
• maximum spindle torque (12.5-31.5 rpm): 10300 Nm
• T-slot width: 22 mm
• T-slot spacing: 160 mm
• hydraulic unit

– oil tank capacity: 55 l
– pump capacity: 5.2 l/min
– working pressure: 5.8-6.5 MPa

• lubrication unit

– oil tank capacity: 15 l
– pump capacity: 0.5 l/min
– working pressure: 0.03 MPa

• feeders drive power: 2x 6 kW
• power requirement: 80 kW
• space requirement: 43 m2
• weight of the TOS VARNSDORF WHN 13.8.A machine: 32000 kg