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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 the 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 column are such as to guarantee a very high level of finish on any working material. On the base are fixed the three guides for the longitudinal movement of the upright (X axis) while in the front is fixed the table top. In the column instead there are the two guides for the transverse movement of the column (Y axis) which in turn mounts the two guides for the vertical movement of the spindle line (Z axis).

WORKPIECE TABLE WITH ROTARY TABLE

In this model the table is static. This consists of a fixed part where you can load up to 2400kg and a rotating table (C axis) placed on the side of the same where you can load a piece of 1000mm diameter with a maximum load of 1200kg. The placement of rotating table on the right side and not in the center allows us to perform machining even with a negative angle - 20° with respect to the table top allowing to perform undercut machining without the aid of clamping systems to raise the piece and reducing its stability. 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.

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 AND TILTING HEAD

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. Structure of the spindle line has in the rear 4 skids for sliding on the column (Z axis). Tilting head is anchored to the spindle line where inside it contains the 15000rpm DDS (Direct Drive Spindle) electrospindle. Head is positioned as a continuous B-axis with a resolution of 0.001° and includes a working angle from - 30° to + 110°. An effective oil refrigeration system that is pumped through the electrospindle allows us to keep the temperature controlled during the entire period of use even at full capacity. There is an ATE DC170/250/4 motor (26-34.5kw).

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 warehouse is 40 seats. Optional you can mount the 60 seats. The system is anchored to a monolithic Meehanite ® cast iron structure which in turn is fixed to the machine base thus releasing the tool change from other machine movements. 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. Only 2.8 sec. (Tool to Tool) are needed 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 450L pump and pipes for the refrigeration of the spindle and the cleaning of the machine. On request the system could be 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.