Grob G720F - Dual-Spindle Machining Center for Automotive Industry

Description

Grob G720F 

Machining center for frame structure and chassis parts The dual-spindle machine concept of the G720F allows customers in the automotive industry to mill two parts simultaneously with high precision. Optimized and coordinated feed drives ensure enhanced dynamics and reduced chip-to-chip times.

Benefits: 

  • Unrestricted chip evacuation and efficient heat dissipation
  • Enhanced dynamics
  • Reduced chip-to-chip intervals
  • Versatile manufacturing capabilities
  • Precision machining accuracy
  • Various customer-specific options for GROB motorized spindle versions
  • Exceptional design for minimal quantity lubrication machining
  • Can function as a standalone machine or be integrated with other machines

 

Technical Data

Working travels 1,450/1,200/1,035 in X-/Y-/Z-axis (mm)

Speeds 80/50/100 max. in X-/Y-/Z-axis (m/min)

Interference diameter 2x1,500 (mm)

Chip-to-chip time t1 according to VDI 2852 (s) 2.9 relative to a rotational speed (min-1)

Position accuracy 0.01 in X-/Y-/Z-axis (mm)

Table diameter 512 (mm)

Table load 2x635/2x750 with/without pallet (kg)

Total weight 35.000/45.000 without/with pallet changer (kg)

Elemente

Battery tray

Giga casting

Side rail

Subframe

Suspension strut dome

Spindle variants

In addition to the broad range of spindles, the motorized spindles designed and produced by GROB itself are the preferred choice for optimized process design.

Motorized spindle versions

  • HSK-E40, 17.4 Nm, 42,000 rpm
  • HSK-A63, 82.8 Nm, 12,000 rpm
  • HSK-A63, 206 Nm, 16,000 rpm
  • HSK-A63, 46.6 Nm, 21,000 rpm
  • HSK-A63, 63 Nm, 30,000 rpm

GROB Spindle Diagnostics (GSD)

GROB spindle diagnostics is an automated system that monitors the condition of the motorized spindle. Benefits include extending the useful life of the motorized spindle, reducing tool wear, and scheduling maintenance.

GROB Chip-in-Spindle Detection System (SiS)

This system can identify tool clamping issues caused by chips between the mating surfaces and the spindle nose from 10 μm early on.

Concept

Axis layout

Modular framework

Personalized automation

Two-spindle machine

Automation

Transportation and automation components

Loading system

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