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BASE, UPRIGHT AND COLUMN

The base, the upright and the column are built in a single cast iron Meehanite ® with oversized ribs able to withstand the most severe stresses. These are subjected to stabilization treatment outdoors for a minimum period of 6 months allowing to eliminate the remaining internal tensions; the geometry of the base has been designed to facilitate chips evacuation and operator accessibility to the machine. The machine is equipped with two doors that open completely allowing you to load even the most bulky and heavy parts. Base, upright and column are designed according to the application of the analysis and design system (FEA). Using this system the computer determines the thickness and dislocation of the internal ribs. In addition to the remarkable stability, the body of the machine is such as to guarantee a very high level of finish on any working material. On the base are fixed the linear guides for the longitudinal movement of the upright (X axis) while in the front is fixed the turntable for the movement of the 4° and 5° axis and the preparation for the auger for chip evacuation. In the upright instead, there are linear guides for the transverse movement of the column (Y axis) which in turn mounts the guides for the vertical movement of the spindle line (Z axis). 

TRUNNION TABLE

Trunnion table has a widely dimensioned Meehanite ® cast iron structure. On one side it is fixed directly to the machine base thus allowing excellent stability and resistance, while on the other side it is equipped with a counter support that houses two bearings. It’s driven by Fanuc/Heidenhain engines for the 4° and 5° axis movement. Both are managed by the innovative "Roller Cam Drive" system: with this method, the motor acts on the hardened and ground steel worm which with the help of cylindrical roller bearings rotates the plate in the absence of friction. Despite having a mechanical recording that allows us to reset the game this system guarantees over time the accuracy of positioning eliminating the "backlash" effect. The table has a size of 630 x 500mm allowing you to load a piece out of the shoulders of 730mm diameter with a maximum load capacity of 300kg.

GUIDES

The three main movements of the machine (X, Y, Z) are all on linear guides with rollers recirculation of the best steel brands. An efficient automatic timed forced lubrication system ensures constant lubrication on all contact surfaces. The dimensions of the guides are such as to make the specific pressure very low even under very heavy loads and stresses.

SPINDLE LINE

It has a monolithic structure in Meehanite ® cast iron. Structure is "thermally symmetrical" to limit the effects of any temperature ranges that may be generated. An efficient cooling system with external cooling unit keeps the temperature constant. Spindle's structure line has in the rear 4 skids for sliding on the column (Z axis). The motion transmission is by means of a direct line spindle with electronic gear box; as an option it is possible to mount an electrospindle. Standard rotation speeds are 12,000 or 15,000rpm; optional you can also mount an electrospindle at 20,000 or 24,000rpm. A Fanuc αT8 (7.5-11-15kw) motor is fitted as standard; a more powerful Fanuc αL8 (15-18.5-22kw) motor can also be fitted.

TOOL CHANGE

The automatic tool change system consists of a "chain" type magazine positioned on the right side of the column and a double-grip exchanger arm. Standard capacity of the storage is 30 seats. Optional we can also have 40,48 or 60 seats. The tool magazine is completely covered by means of a pneumatic door that opens and closes allowing the arm to carry out the exchange thus avoiding the entry of chips and dirt. The exchanger arm is built according to concepts of remarkable strength and reliability over time. The selection of the tool type "Random" bidirectional, with search of the tool according to the shortest path allows a quick pre-selection during processing, then in time masked. The tool change is very fast: it only takes 2.5 sec. (Tool to Tool) to make it.

CHIP CONVEYOR (OPT.)

It is of the hinged type with the drain positioned on the left side of the car (seeing it frontally); on request you can place it on the opposite side. Its maintenance and cleaning is extremely simple and fast extracting it from the front of the machine. Carpet dimensions have been sized for a long life while having to evacuate a large amount of steel chips or other material. Also included is the chip pick-up trolley.

REFRIGERATION TOOL UNIT

It is complete with a very large collection tank capable of collecting up to 400L pump and pipes for the refrigeration of the spindle and the cleaning of the machine. On request the system is equipped with additional high pressure pumps for the passage of water through the spindle and systems for waste oil recovery in the tank to prevent pollution of emulsions.

ELECTRONIC EQUIPMENT

System is integrated with the machine CNC and is complete with a watertight cabinet. All controls as well as the steering unit are located at the front while the control cabinet is located at the rear of the machine. On request it is possible to have an effective air conditioning system that ensures that inside the electrical cabinet the operating temperature is controlled and constant to prevent the electronic components used from being damaged, especially in the warmer seasons.

AUTOMATIC LUBRIFICATION SYSTEM

Includes the lubrication unit equipped with a timer and a series of dosing units for the automatic lubrication of: sliding guides - ball screws - bearings. An audible warning device warns us if the level has reached the minimum allowed while continuing to lubricate. To ensure that system is fully functional there are pressure switches that measure the pressure in the circuit that only when the set pressure has been reached releases the liquid; if this does not happen due to leakage an alarm arises. Basement structure has been designed to recover most of the waste oil in a special pan.

PNEUMATIC SYSTEM

Complete with filter unit, reducer, lubricator and solenoid valves. This system feeds the cleaning devices of the tool connection cone on the spindle and the blowers against the ingress of foreign bodies into the spindle itself.