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BASE AND WAGON

The basement and the upright are built in a single cast Meehanite ® cast iron 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 both the evacuation of chips, as well as operator accessibility to the machine. 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 base and the upright are such as to guarantee a very high level of finish on any working material. The structure of the machine is defined as "T". So in the base the guides for the movement of the pallet (Z axis) are fixed frontally while in the back are fixed the guides for the movement of the mast (X axis). In the upright there are the guides for the movement of the spindle line (Y axis).

PALLET

It has a monolithic structure in Meehanite ® cast iron. This structure has in the lower part the 4 pads for handling the Z axis. Inside is the Fanuc motor that allows the rotation of the pallet (B axis). The standard pallet has an indexing of 1°, as optional it is possible to have the continuously pallet  0.001°. In case of continuous pallets the rotation takes place through the innovative system "Roller Cam Drive": with this method the motor acts on the hardened and ground steel worm that 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 diameter of the pallet is 500mm being able to work a piece of maximum dimensions of diameter 720 x h 750mm for a maximum weight of the piece of 800kg.

ROTARY PALLET CHANGE

The front pallet changer is ideal for minimizing the problem of the overall dimensions of the machined parts and any clamping equipment and facilitates the loading/unloading operations. Pallet changer unit consists of a cast iron base on which are placed the two pallets placed in turn inside a rotary/linear transfer system through two different tracks for the two pallets. With this system passive loading/unloading times are eliminated as these operations are performed in masked time so as long as the machine works. This is possible thanks to the fact that the two stations are separated by a shelter avoiding the leakage of coolant and chips. That allow to the operator to load/unload the piece safely.

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 cast iron Meehanite ® of square shape centered between the rails of the upright on which it flows. This structure guarantees extreme strength in case of particularly heavy machining and at the same time excellent finishes even at high spindle rotation speeds. The motion is transmitted by means of a DDS (Direct Drive Spindle) electrospindle. Standard rotation speed is 15,000rpm; as an option you can have 20,000 or 24,000 rpm. Standard is mounted a Fanuc αB112L (15-18.5-22kw) motor.

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. The standard capacity of the storage is 40 seats. Optional it is possible to assemble 60-90-120-180 seats. The structure of the storage is a cast iron Meehanite ® completely separated from the rest of the machine. This has been adopted to avoid that during the rotation the tool chain can in some way affect the degree of machining/finishing, transferring to the machine inappropriate vibrations. The design of the warehouse is very accessible and facilitates tool replacement and maintenance. 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 4.1 sec. (Tool to Tool) to make it.

CHIP CONVEYOR

It’s hinged with the drain on the left side of the car (front view). 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

The 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. An effective air conditioning system ensures that the operating temperature inside the electrical enclosure is controlled and constant to prevent that electronic components used from being damaged, especially in 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.