APEC G3020 Gantry Milling Machining Center

Spindle

As standard, the machine is equipped with an AGA spindle with an independent cooling system and motor temperature sensors. Temperature monitoring supports spindle service life and machine reliability.

High speed and torque make the spindle particularly suitable for machining aluminium alloys in the aerospace industry and for mould making.

Two-axis swivel milling head (A / C axes)

• A and C rotary axes with direct-drive torque motors, combined with high-speed X / Y / Z linear axes, enable simultaneous 5-axis machining of freeform surfaces.
• High rotary axis clamping torque increases rigidity in positional (3+2) machining.
• The compact head design reduces the potential collision zone and provides access to hard-to-reach areas of the part.
• The swivel range allows machining of undercut surfaces.

Spindle head dimensions and machining envelope

Machine structure

• The gantry design with a fixed table requires significantly less floor space than a double-column machining centre with a moving table and a comparable working area.
• The closed-frame structure increases rigidity and cutting stability.
• The fixed table allows a much higher load capacity, while axis dynamics remain independent of workpiece weight.
• The Z-axis ram made of ductile iron with good damping properties provides high bending rigidity and stable cutting across the entire Z travel.
• Twin columns and drive at the centre of gravity improve operating stability. The linear guides on both side walls are positioned with an optimised span for high dynamic and static rigidity.

Feed drives

The X and Y axes are driven by linear motors. With no mechanical transmission, there is no drive backlash or wear, ensuring high accuracy, fast traverse and high acceleration.

Z-axis counterbalance system

• The Z-axis counterbalance system ensures high static and dynamic rigidity during machining. The nitrogen accumulator is compactly installed and the counterbalance cylinders are arranged symmetrically, saving space and simplifying maintenance.
• The closed high-pressure hydro-pneumatic circuit compensates for the weight of the Z-axis assembly and reduces the load on the motor.

Automatic tool changer

• The HSK interface provides simultaneous taper and face contact, increasing rigidity during machining.
• Thanks to face contact, the axial position of the HSK tool remains stable when heated: the shank taper and spindle taper heat up and expand uniformly.

CNC system

As standard, the machine is equipped with the Siemens SINUMERIK ONE CNC with an HT 2 handheld terminal.

Dimensions and working area