G720F

Machining center for frame structure and chassis parts
The two-spindle machine concept of the G720F enables customers in the automotive industry to machine two parts with high precision and in parallel.
Thanks to optimized and coordinated feed drives, you benefit from high dynamics and short chip-to-chip times.
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Automotive
Technical data
Working travels
1,100/990/1,030
in X-/Y'-/Z-axis (mm)
Speeds
60/75/100
max. in X-/Y'-/Z-axis (m/min)
Interference diameter
2 x 1,198
(mm)
All technical data
Chip-to-chip time t1 according to VDI 2852 (s)
3.0
relative to a rotational speed (min-1)
Position accuracy
0.01
in X-/Y'-/Z-axis (mm)
Table diameter
512
(mm)
Table load
2x625
with/without pallet (kg)
Total weight
30,000
(kg)
Benefits at a glance
checkboxUnhindered chip fall and optimal heat dissipation
checkboxHigh dynamics
checkboxShort chip-to-chip times
checkboxHigh manufacturing flexibility
checkboxHigh machining accuracy
checkboxCustomer-specific options of various GROB motorized spindle versions
checkboxOutstanding design for machining with minimum quantity lubrication
checkboxCan be used as stand-alone machine or linked to other machines
Machine concept
Axis arrangement

The axis combination is based on the tried and proven G-series GROB machine concept with horizontal spindle position and guarantees free chip fall and optimized heat dissipation.

Modular structure

The modular and standardized machine components guarantee the best possible GROB product quality.

Individual automation

Available with manual or automatic front loading or automatic top loading.

Two-spindle machine

Two-spindle machine for machining two parts in parallel.

Technology down to the finest detail
Two-spindle machine

Two-spindle machine for machining two parts in parallel.

Electrical cabinet

Optimized access and simple orientation for preventive maintenance and inspection

Chip disposal

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

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Two-spindle machine

Two-spindle machine for machining two parts in parallel.

2
Electrical cabinet

Optimized access and simple orientation for preventive maintenance and inspection

3
Chip disposal

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

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 G720F and have optimized quality features.

Motorized spindle versions
  • HSK-A63, 47 Nm, 12,000 rpm (standard)
  • HSK-A63, 47 Nm, 18,000 rpm (option)
  • HSK-A63, 83 Nm, 12,000 rpm (option)
  • HSK-A100, 186 Nm, 12,000 rpm (option)
  • HSK-A100, 340 Nm, 10,000 rpm (option)
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 HSK plain surface and the spindle nose from 10 μm. So the machining process is optimized and rejects and damage are avoided.

Tool magazine

  • Single disk-type tool magazine

 

  • Double disk-type tool magazine

Control systems

Choose between modern and powerful CNC control systems from market leaders for the G720F.

Automation solutions

Loading systems
Loading systems

The G720F is designed for efficient work area loading. All loading devices are developed and produced by GROB, and so the individual components are guaranteed to be optimally matched.

Loading systems

Top or front loading

  • Robot

 

Top loading

  • Cartesian linear gantry
  • Cartesian linear gantry with telescope

 

Front loading

  • Swiveling changer
Transportation and automation components
Transportation and automation components

Together with the GROB automation system, the transportation 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
  • Rotates
  • Transverse stroke device
  • Swivel units
  • SPC stations
  • Zero-point clamping systems
  • Adapter plates

Accessories

Tool cleaning device
Tool cleaning device
  • Brushing and air cleaning of the conical and flat surfaces of the tool interface during the machining operation 
  • Combined and patented GROB brushing/blow-off-device
Tool coding
Tool coding
  • Allows data to flow between tool and machine control 
  • Shorter tooling times
  • Write-read unit for tools with tool coding 
  • Errors when inputting the tool data avoided 
Decentralized work area mist collecting system
Decentralized work area mist collecting system
  • Emulsion mist separator with the option to realize an integrated pre-separator stage, a regenerative filtration stage and an integrated post-filter stage with controllable suction power
GROB<sup>4</sup>Track
GROB4Track
  • GROB-NET4Industry application for monitoring the machine's state and the resultant plannability of preventive maintenance work 
High-pressure cutting fluid system
High-pressure cutting fluid system
  • Standard version: 23 bar high-pressure cutting fluid pump, including On/Off funktionality
  • Additional versions for higher pressure requirements: 5-38 bar/10-80 bar high-pressure cutting fluid pump
  • Option of an additional cooling unit for all high-pressure cutting fluid systems 
Continuous cooler
Continuous cooler
  • An external continuous cooler of cooling the cutting fluid
  • Available for all high-pressure cutting fluid pumps 
Electromechanical tool breakage detection device
Electromechanical tool breakage detection device
  • Tool breakage detection via a tactile tool breakage detection device 
  • Monitoring during machining 
Touch probe
Touch probe
  • For aligning and measuring parts or clamping fixtures, as well as for setting zero and reference points for downstream machining operations 
Machine status lamp
Machine status lamp
  • A three-color status lamp is used to visually indicate the machine status 
  • A distinction is drawn between automatic mode (green), warning (yellow) and malfunction (red)
Oil skimmer
Oil skimmer
  • The oil skimmer removes hydraulic and lubricating oil from the cutting fluid surface to keep the cutting fluid as clean as possible 
Laser measurement system for milling tools
Laser measurement system for milling tools
  • Contactless, optical tool monitoring/measurement of rotating tools, such as milling cutters and drills 
Camera system
Camera system
  • Camera solutions for industrial automation and for inspection tasks
  • Consisting of individual components such as lenses, lighting units, image sensors and software
GROB Service
Customer service

GROB SYSTEMS, Inc.
Phone:    +1 (419) 358-9015
E-mail:    info@us.grobgroup.com