J. Schneeberger Maschinen AG
Roggwil BE
The Gemini NGM Tool Grinder from J. Schneeberger Maschinen AG
- 17 January 2024
- 100%
- Permanent position
- Roggwil BE
About the job
91The Gemini NGM tool grinder from J. Schneeberger Maschinen AG Grinding and sharpening with one button Swiss company J. Schneeberger Maschinen AG has divided its machine tools into five series. The Gemini represents the one for the most complex grinding tasks. The strengths of the Gemini NGM lie in the ratio and the machine components, allowing an optimal choice between workspace and footprint, the wide variety of transmission options, axis stroke lengths, configuration options, the intuitive and practical software for generating new grinding and sharpening processes, the power and size of the grinding spindles, and automatic loading and unloading systems. For special grinding operations, Schneeberger develops bespoke solutions that can be implemented in the process, for example, for profiling tools used in gear manufacturing. The cross table positioned on the machine base contains the X and Y axes which run on ball screw guides. On the Y axis is the divider (A axis) equipped with direct drive and an internal cooling system. On the Z axis, designed for rigidity through FEM analysis, is the grinding spindle (B or C axis). As an option, the machine can be equipped with a double grinding spindle and the X, Y and Z axes with linear motors. www.fertigung.de
AUF HERZ + NIEREN Machine Check 73
The grinding spindle axis relative to the pivot point on the C axis has been optimised with a shorter lever arm to ensure better stability and a TEST MACHINE RESULTS
The detailed table is available at:
Score
Best score.
www.fertigung.de NGM h b Commissioning
25.00
22.50
Time required for 1st job
12.50
10.00
Processing quality
2.50
2.50
Alignment
2.50
2.50
Operator instructions
7.50
7.50
Ease of maintenance
100.00
95.00
Accessibility for maintenance work
25.00
0.00
Accessibility in case of faults
35.00
35.00
Spindle replacement time
15.00
15.00
Replacement time
15.00
13.50
Automation components
Operational monitoring functions
10.00
9.00
Automation
100.00
100.00
Machine start-up /
30.00
30.00
Process / Loading
30.00
40.00
Loading and clamping
40.00
30.00
Control
50.00
48.00
Control functions
30.00
30.00
Collision control
20.00
18.00
Loader
50.00
50.00
Tool clamping
25.00
25.00
Installation
15.00
15.00
Tool type variation
10.00
10.00
Service
75.00
68.25
Service personnel
30.00
27.00
Spare parts warehouse /
22.50
22.50
Spare parts production
Model archive /
15.00
12.00
Remote control
Maintenance contracts
7.50
6.75
TCO
85.00
40.80
Driver analysis available
34.00
17.00
Evaluation and numbers:
34.00
13.60
Downtime times /
Fault reporting
17.00
10.20
Contracts
15.00
10.00
Edwin Neugebauer
Warranty
5.00
4.00
Payment terms
5.00
4.00
TCO resolution
5.00
2.00
Total
500.00
434.55
The A axis has a torque of 218 Nm / 800 rpm. Grinding spindles available up to 24 kW / 12,000 rpm. 74
AUF HERZ + NIEREN Machine Check The presence of adaptable gripping collets for every need. They enable the creation of machining paths. The blanks and machined tools are stored in pallets. The CAD model of the tool can be easily imported into the software and the grinding wheel path is generated in a few steps. Qg1 offers the possibility to directly generate the 3D model, defining the main parameters of the tool to be processed. The software interface display is divided into two main screens, the upper one representing the tool being machined and the lower one allowing the creation and modification of other processes to reduce design and machining times. Another fundamental aspect of Qg1 is the simulation of generated paths, allowing the operator to have maximum control during design and facilitating the search for immediate solutions. Grinding and sharpening processes
Qg1 is the grinding and sharpening software developed by Schneeberger. It offers a comfortable and customised platform for process design. The functions are clearly presented, can be quickly activated, and the default settings in the programme quickly lead to the completion of the desired grinding or sharpening process. During the machine test, a carbide milling cutter was simulated with the Qg1 software, then manufactured and sharpened with the Gemini. The results are remarkable: harmonious cutting and surprisingly finished surface. The machine adjacent to the one tested was engaged in profiling a tool for gear tooth cutting, a machining process in which Schneeberger has solid experience. Existing data in the archive provided by Schneeberger's standard database and the user's specific and customised data sup- NUMBERS + FACTS
Machine data
In brief Gemini NGM from Schneeberger Gemini NGM from Stroke (Axes - X/Y/Z) (mm)
500 x 400 x 380
Schneeberger
C axis, rotation angle
365°
Strengths:
Grinding wheel arbor
HSK 50, HSK 80; HSK 190
Optimal layout
Spindle
10 kW (100%), 13 kW
- (60%), 24 kW (100%), 32
- Solid and compact machine kW (60%)
360°, ball screw, 40 rpm, 800 rpm Wide tool processing spectrum Clamping
ISO 50
The Qg1 grinding and sharpening software has Wheel changer
8, 14 positions; max. 42 intuitive functions and a clear structure. Wheels
Functional software,
Loader
Robot (capacity: 6/20 kg) intuitive schnelle Generierung neu- Storage max. 4 pallets 300 x 300; er Schleifprogramme Test Machine:
Stock; Arena for
tool holder process of large grinding spindle construction and choice Control
Fanuc 31i B5
Dimensions
1350 x 2304 mm
Weight
7 t
Machine dimensions (mm)
8450 x 5650 x 4850
www.fertigung.de
AUF HERZ + NIEREN Machine Check 75
The wheel loader has up to 14 positions for HSK-50 wheel holders, on which 3 wheels each can be loaded. The special spindles can be replaced by the robot (capacity 6 kg) during tool change. The Fanuc robot, with a load capacity of 20 kg, manages from two to four pallets. The ERP system's potential is not yet fully exploited and could be improved. The machine is equipped with Fanuc 31i control. Fanuc modules are also used for transmission. An automatic ticket system is planned, generated when the customer receives an error message. If defects are detected, their resolution is planned as soon as possible. Technical support is provided by branches in various countries. The hotline service operates during office hours. Each intervention is followed by the creation of a report which is then recorded and archived in an ERP system. J. Schneeberger Maschinen AG, CH-4914 Roggwil, Tel.: +41-629/18440, www.schneeberger.swiss GrindTec Hall 3, Stand 3076
