GRAUX acquires a new large milling machine

A new SORALUCE FP 8000 milling machine is operational.

In October 2019, GRAUX proceeded with the start-up of a new, high-dimensional capacity, more accurate and self-contained milling machine. This equipment completes the upgrade of the entire production tool and thus meets the growing demand for the manufacture of large welded units.

Accommodating a 26-ton machine in a working shop presents many challenges.

The installation of this new machining unit required careful preparation. The continuation of the activities in the hall intended to accommodate this machine had to be ensured while reorganizing the work areas to free up space for the important work required to prepare the slab. All this in a busy production schedule! The team was flexible and participated fully in the smooth arrival of this new ‘baby’.

The demolition of the concrete slab, excavation and removal of 240 m3 of soil was completed by the end of May 2019. Then, during the month of June, a specific reinforcement was carried out, a high resistance concrete was poured and the anchoring studs of the machine were made with great precision.

At the August resumption, following the official summer shutdown, the milling machine was installed. At the end of this work, which lasted six weeks, the first machine adjustments could be made at the end of September. The final acceptance took place in early October.

Technical information of the milling machine.

Brand: Soraluce

Model: FP 8000

Longitudinal stroke (X axis): 8000mm

Vertical travel (Y axis): 3100mm

Transverse stroke (Z axis): 1600mm

Milling head with automatic indexing, power 37 KW, speed 7000 rpm

40 tool magazine

Heindenhain iTNC 640 numerical control that receives programs from our Mastercam CAD/CAM system.

Dimensions of the machine: 16250x8200x4130 mm

Weight: 26 T

Tolerances measured when the machine is delivered.

The machine has been received in our workshops with the following measurements:

• Accuracy of machine geometry according to ISO 10791-3:
  • X axis: 0.022 mm on the 8000mm
  • Y axis: 0.005 mm
  • Z axis: 0.02 mm
• Head accuracy according to ISO 10791-3:
  • Spindle nose: 0.005mm
  • Spindle axis in relation to the table: 0.004mm
  • Head rotation: 0.01mm