G550T

5-axis universal mill-turn machining center

The G550T mill-turn machining center offers the machining sector almost limitless possibilities for machining parts made of the most diverse materials.

High productivity, maximum stability and excellent maintainability set GROB universal machining centers apart, making them the ideal solution for your automated manufacturing facility.

Aerospace

Mechanical engineering

Energy technology

Die and Mold Industries

Technical data

Working travels

800/1,020/970

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

Max. speeds

65/50/80

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

Interference diameter

900

(mm)

All technical data

Chip-to-chip time t₁

2.9

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

Positioning accuracy

0.006

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

Table diameter

770

(mm)

Table load

600/750

with/without pallet (kg)

B'-axis speed

800

n_max (rpm)

Total weight

25,700

(kg)

Tool length for single disk-type tool magazine

465

HSK-A/T63 (mm)

Tool length for double disk-type tool magazine

465/280/700

HSK-A/T63 (bottom/top/over both disks) (mm)

The benefits at a glance

High productivity

Optimized availability

High visibility

Flexible applications

Maintainable

Compact design

Optimized access

Round-the-clock service

Unique machine concept

Horizontal spindle position

The horizontal spindle position permits the longest possible Z-travel path and optimum chip fall.

Maximum stability

The unique arrangement of the three linear axes minimizes the distance between the guides and the machining point (TCP), lending the machine considerable stability.

Tunnel concept

The tunnel concept allows the largest possible component – even in the case of with extremely long tools – to be swiveled and machined within the work area without collision.

Large swivel range

Three linear and two rotary axes permit 5-sided machining, 5-axis simultaneous interpolation as well as GROB TRAORI turning. With a swivel range of 230 degrees in the A'-axis and 360 degrees in the B'-axis, these machines offer the greatest possible positioning flexibility.

Pure technology in the smallest space

Disk-type tool magazine

Fast tool change through an intelligent magazine to motorized spindle arrangement

Horizontal motorized spindle

For meeting the toughest cutting requirements

Mill-turn table

Almost limitless machining potentials thanks to the largest possible swivel range

Chip disposal

Uninterrupted part machining with chip disposal by a slat band conveyor

Machine bed

Intrinsically stiff welded design for optimum machine rigidity

G550T – TRAORI turning for ideal results

The GROB G550T mill-turn machining center boasts convincing precision and speed.

Find more videos here:

G550T – TRAORI turning for ideal results

Typical machining operations

Gear wheel

Dimensions of raw material (mm)	Ø 250x50
Industry	Mechanical engineering
Material	Heat treatable steel
Machining time	15 minutes
Motorized spindle	10,000 rpm
Power/torque	66 kW/340 Nm

Aluminium rims

Dimensions of raw material (mm)	Ø 550x250
Industry	Automotive
Material	Aluminium
Machining time	10 hours
Motorized spindle	10,000 rpm
Power/torque	66 kW/340 Nm

Francis turbine wheel

Dimensions of raw material (mm)	Ø 800x250
Industry	Energy technology
Material	Chromium-nickel steel
Machining time	96 hours
Motorized spindle	10,000 rpm
Power/torque	66 kW/340 Nm

Mold of a PET bottle

Dimensions of raw material (mm)	295x125x65
Industry	Die and Mold Industries
Material	Aluminium
Motorized spindle	30,000 rpm
Power/torque	53 kW/63 Nm

Mill-turn tables

To provide you with the best possible support for meeting the requirements of your mill-turn operations, GROB offers tables, optimized specifically for mill-turn operations, with significantly higher maximum speeds than pure universal milling machining centers.

Mill-turn table T-slots arranged in a star shape (standard)

Mill-turn table with pallet clamping system (option)

Spindle versions

To optimize the process design of your mill-turn operations, GROB offers mill-turn motorized spindles developed specifically for this purpose.

Motorized spindle versions

206 Nm, 16,000 rpm
340 Nm, 10,000 rpm
261 Nm, 14,500 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.

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.

Additional tool magazine

Single disk-type tool magazine

Double disk-type tool magazine

Machine control panel

GROB⁴Pilot is your powerful machine control panel. A multi-functional user interface offers the machine operator a convenient working environment. The entire production process – from the CAD model through to the NC simulation – is digitally mapped on the GROB⁴Pilot control itself. GROB⁴Pilot is available for the control systems SIEMENS 840D sl and HEIDENHAIN TNC 640.

Features:

3D display of parts and their clampings
Read out of dimensions or product characteristics (PMI) on the 3D model itself
Touch keyboard within the display
HTML5-compliant web browser
Custom user interfaces
Activation of remote maintenance via switch

Advantages:

Enhanced user comfort with simplified and intuitive machine operation
CAD/CAM programming on the machine itself
Access to the GROB-NET⁴Industry platform
Extended applications for increased efficiency
Paperless production facility
Time saving by use of applications parallel to machine operation

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.

Rotary pallet storage system

Design versions with pallet storage positions at one to three levels
Fast double change when using two pallets thanks to an innovative pallet changing device
Visualization and organization of production orders with flexible production control software
State-of-the-art production control software with 19-inch touchscreen panel
A rotatable and lockable setup station with optimized access next to the machine control panel

Rotary pallet storage system

Benefits:

Complete solution from a single source in a standardized design
Cost-effective production through increased machine utilization
Capability to machine in unmanned/lightly-manned shifts
Optimized view into the work area and towards the pallet storage positions
Parallel loading and unloading of the pallets during the machining operation
High storage capacity with small footprint
Pallet storage solution for small initial investment
Simple retrofit on existing machines

Customer-specific automation solution

The tougher requirements in the automation sector call for individual solutions tailored to the customer's specific needs. GROB offers such solutions, from customized part handling through to flexible manufacturing lines with multiple machines and centralized tool supply.

Software options

Use the GROB software solutions to optimize and analyze the machine kinematics of the G350T and minimize deviations down to the finest detail.

GROB swivel axis calibration (GSC)

For highly precise machine calibration and control-specific kinematic cycles. The GSC achieves a much higher level of accuracy than standard calibration cycles without using swivel cycles.

GROB kinematic measurement inspection equipment set

In addition to the kinematic measuring cycles, all measuring instruments are supplied in an inspection equipment set.

Interpolation turning PLUS

The interpolation turning PLUS software solution enables any turning operations on the G550T. Because both new and standard tools can be used, it remains economical at all times and is the ideal solution for prototype and small series production.

Energy efficiency package

For efficient use of energy by reducing the power consumption of the G550T (with SIEMENS control system).

Gear hobbing

For individual corrections and block entry at any cut, gear hobbing is a suitable process for external gearing and gearing on shafts.

Power skiving

For perfect external and internal gearing with power skiving machines. Frontal part access required for hob peeling.

GROB TRAORI turning

GROB TRAORI turning leads to a dynamic alignment of the tool cutting edge to the contour of the turned part in consideration of tool length and tool radius. Consequently, a significantly longer service life is achieved and short tools can be used.

Accessories

Our extensive range of accessories makes the G550T more flexible, while increasing your own productivity and economy at the same time.

High-pressure cutting fluid system

Standard version: 23 bar high-pressure cutting fluid pump, including On/Off functionality
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

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 800 m³/h of controllable suction power.

Oil skimmer

The oil skimmer removes hydraulic and lubricating oil from the cutting fluid surface to keep the cutting fluid as clean as possible. The oil skimmer comprises a belt drive, a wiper and a collecting vessel with level switch.

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

Allows data to flow between tool and machine control system
Shorter tooling times
Write-read unit for tools with tool coding
Errors when inputting the tool data avoided

Laser measurement system for mill-turn tools

Mechanical tool measurement of turning tools
Contactless, optical tool monitoring/measurement of rotating tools, such as milling cutters and drills
Measurement and monitoring of tool length, diameter, breakage, wear and cutting edge condition

Electromechanical tool breakage detection device

Tool breakage detection via a tactile tool breakage detection device
Monitoring during machining
Tool breakage detection possible from a length of 100 mm

Hand-held controllers

Additional option for tool data input by connecting the controller to the tool loading station

Touch probe

Aligning and measuring parts or clamping fixtures, setting zero and reference points for downstream machining and for machine kinematics measurement
Touch probe including data transmission via infrared or radio
Non-machining time for tooling and measuring reduced
Higher achievable part accuracy