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Rules

Double-sided machining of pipes

Machine type: travelling column machining centre

Instead of a fixed machine cladding the working space around the spindle is encased in a hood that moves with the travelling column
Instead of a fixed machine cladding the working space around the spindle is encased in a hood that moves with the travelling column
During the setup, the spindle is accessible through the opened doors of the hood
During the setup, the spindle is accessible through the opened doors of the hood
The pipe is tensed in self-centring vices that are constructed in the table area
The pipe is tensed in self-centring vices that are constructed in the table area
Using the movable rotary table, the pipes can be held and rotated into position
Using the movable rotary table, the pipes can be held and rotated into position

Task:

Double-sided machining of pipes accompanied by the introduction of radial drill holes on the circumference

Solution:

  • The pipes are deposited manually or by robot onto a pre-centring and then hydraulically clamped using centring clamps
  • Double-sided end machining using centring clamps and introduction of radial drill holes by means of a tilting spindle head
  • Use of an NC rotary table with 3-jaw power chuck on a separate linear axis for automatically rotating the workpiece into the machining position
  • Followed by clamping and drilling once again
 

Special characteristics:

Coverage of a large diameter range through the use of exchangeable prismatic jaws
 

Traverse ranges:

X-traverse range: 7000 mm
Y-traverse range: 900 mm
Z-traverse range: 1250 mm

Spindle:

Main drive (with 40% DC): 56 kW
Spindle torque (with 40% DC): 540 Nm
Speed range: 30 - 4000 1/min

Tool changing system:

60 tool places XTS

Rotary table:

NC rotary table RTA 4S-1000