G520

Modular machining center

GROB offers customers from the automotive sector its G520 two-spindle machining center, an autonomous machine variant for machining two parts in parallel.

The G520 meets all the requirements of a modern manufacturing line with maximum flexibility and productivity. With an integrated pallet changer, this version machines dissimilar parts without additional change-over times.

Automotive

Technical data

Working travels

750/1,000/870

in X-/Y-/Z-axis (mm)

Max. speeds

95/70/120

in X-/Y-/Z-axis (m/min)

Interference diameter

2x798

(mm)

All technical data

Chip-to-chip time t₁

2.1

according to VDI 2852 (s) relative to speed (rpm)

Positioning accuracy

0.006

in X-/Y-/Z-axis (mm)

Total weight

22,500/28,500

without/with pallet changer (kg)

Table load

2x625/2x525

without/with pallet (kg) (A-/B-axis)

The benefits at a glance

Reduced machine width

Maximum tool length

Fast tool change

Broad range of applications

Modern machine design

Expandable tool pockets in the tool magazine

Intelligent power unit arrangement

Highly effective loading concept

Unique machine concept

Axes decoupling

To improve dynamics and rigidity and to achieve a compact configuration according to the modular concept, the motion axes of the G-modules have been divided into tool and part side.

Modular configuration

The standardized basic principle of the G-series permits a modularized manufacturing process with shorter throughput times and minimized part costs. This effectively reduces the number of assemblies while permitting a broad range of combinations.

Extremely economic

The G-modules are designed for both wet and dry machining. In the system overall, they require only a very small footprint and are optimized for short throughput times. Thanks to constant further development, energy-saving measures are already offered as standard.

Completely future-proof

The G-series considers increasingly shorter innovation cycles and fast product changes. Its reduced footprint and commissioning effort makes it a flexible partner for all manufacturing tasks and any process modification.

Pure technology in the smallest space

Electrical cabinet

Optimized access and simple orientation for preventive maintenance and inspection

Control system

Latest machine control systems from SIEMENS available

Horizontal motorized spindle

For meeting the toughest cutting requirements

Tilting rotary table

Almost limitless machining potentials thanks to the largest possible swivel range

Chip disposal

Uninterrupted part machining with chip disposal by a scraper-type conveyor

G520 with pallet changer

The G520 machining center offers outstanding performance in series manufacture by flexibly producing maximum quantities from the smallest footprint.

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Typical machining operations

Stator housing

Industry	Automotive
Material	Aluminium alloy
Motorized spindle	12,000 rpm
Power/torque	40 kW/161.4 Nm

Control arm

Industry	Automotive
Material	Aluminium alloy
Motorized spindle	18,000 rpm
Power/torque	29 kW/34.6 Nm

Crankcase

Industry	Automotive
Material	Aluminium alloy
Motorized spindle	18,000 rpm
Power/torque	29 kW/34.6 Nm

Transmission case

Industry	Automotive
Material	Aluminium alloy
Motorized spindle	18,000 rpm
Power/torque	29 kW/34.6 Nm

Knuckle

Industry	Automotive
Material	Aluminium alloy
Motorized spindle	17,000 rpm
Power/torque	40 kW/64 Nm

Front Knuckle

Industry	Automotive
Material	Aluminium alloy
Motorized spindle	17,000 rpm
Power/torque	40 kW/64 Nm

Spindle versions

Besides the broad range of spindles, the motorized spindles designed and produced by GROB itself are the preferred choice for optimized process design. These are optimally matched to the G520 and have optimized quality features.

Motorized spindle versions

HSK-A63, 47 Nm, 12,000 rpm
HSK-A63, 47 Nm, 18,000 rpm
HSK-A63, 83 Nm, 12,000 rpm
HSK-A63, 86 Nm, 17,000 rpm
HSK-A100, 185,5 Nm, 12,000 rpm
HSK-A100, 340 Nm, 6,000 rpm
HSK-A100, 344 Nm, 6,000 rpm
HSK-A100, 340 Nm, 10,000 rpm

GROB Spindle Diagnostics (GSD)

GROB spindle diagnostics is a system that automatically monitors the condition of the motorized spindle. Benefits are a prolonged motorized spindle useful life, reduced tool wear and scheduled maintenance.

GROB Chip-in-Spindle Detection System (SiS)

This system is able to detect at an early stage tool clamping faults caused by chips between the plain surface and the spindle nose from 10 μm. So the machining process is optimized and rejects and damage are avoided.

Tool magazine

GROB tool magazine technology is set apart by fast chip-to-chip times, a smaller space requirement and optimized accessibility. Choose the right solution for you.

Single-disk magazine
Double-disk magazine
Triple-disk magazine

Control systems

Choose between the latest and most powerful CNC control systems from market leaders for the G520:

SIEMENS (standard)

FANUC (option)

Automation solutions

Draw on the experience we have garnered over several decades and benefit from the automation technology we tailor to meet your needs – from solutions with part storage systems to highly flexible manufacturing lines.

Loading systems

The G-series is designed for efficient work area loading. All loading devices are GROB proprietary developments, and so the individual components are guaranteed to be optimally matched.

Loading systems

Top loading

Agile loading gantry
Cartesian linear gantry
Cartesian linear gantry with telescope

Front loading

Automatic sliding changer
Swiveling changer

Transportation and automation components

Together with the GROB automation system, the transport and automation components create a module from which complex automation systems can be combined. The high degree of standardization ensures the best possible price/performance ratio and a high degree of technical optimization.

Transportation and automation components

Automation system
Lifts
Swivel conveyors
Rotary tables
Lift transverse units
Swivel units
Storage systems
SPC stations
Zero-point clamping systems
Adapter plates

Pallet changer system

The integrated pallet changer system allows dissimilar part types to be machined in parallel on one and the same machine without change-over times.

Pallet changer system

Thanks to maximum machine capacity utilization, better economy is achieved and reactions to capacity adjustments are even more flexible.