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SMS Maschinenbau Products
SMS Maschinenbau GmbH
Tap grinding machines
FG7 / FG15
The FGseries is a stand-alone flute grinding solution. Oil cooled direct drive Fanuc servo spindle motor with programmable speed from 0-12/15.000 RPM’s. The nominal power is 7kW with 10kW peak performance for model FG-7 and 15kW with 19kW peak performance for model FG-15. For tools with diameters over 20mm we will soon offer our FG-35 with 35kW motor, which is currently under development.

The machine is equipped with a 6 axis Fanuc control with option for (on the smaller FG-7), a 7th axis for table tilt, where the tap chamfer can be ground by using a straight 1A1 wheel. Menu driven, user friendly software with clear screen icons and instructions makes operator training easy. The flute profile can be entered by DXF file or through screen menus with 2D flute simulation software. 3D simulation is available for complex flute geometry, based on a standard SolidWorks software platform, with menu driven parametric data input.

The machine will grind straight, right and left hand helix, with grinding wheels from 50 to 220mm diameter. With 2 wheels mounted on the flange, gun point can be ground with discrete profiles for flute and spiral point. The built in 2 axis diamond roll dresser has full flexibility to dress multiple different wheelprofiles - and dressing can be completed during the automatic robot loading cycle, improving greatly on floor to floor cycle time. The Fanuc robot with dual head gripper, completes the loading cycle in less than 6 seconds. Standard round collets can be used due to the pre-locating devise securing perfect alignment between square and flute. 3D printed coolant spouts simplify the set-up greatly and directs the oil accurately saving pump capacity and energy. To complete the array of features for
tap flute grinding, the FG machines all feature a programmable sliding tailstock with the option to grind with center or bushing support.
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GBA 203
GBA 203
Tap grinding machine
SMS Maschinenbau GmbH
Tap grinding machines
GBA 203
With the GBA 203, the developers at SMS have made a quantum leap! For the first time, customer requests for flexible relief path (particularly with regard to the polygon form on forming taps) with significantly increased machine availability can be met. As with the predecessor models in the GBA series, this is a fully automated tap grinding machine - now with an enlarged machining range up to M25. The newly developed A-axis enables a lead angle of -6° to +10° and allows the production of tools with left-handed thread.

The basic machine body, designed with the aid of FEM, provides for maximum productivity and precision. For the relief movement, cutting-edge linear motor technology is used for the first time (relieving cam omitted). The lifting movement is precisely synchronized with the other axes by the CNC control system, which enables very high speeds and relief strokes. In combination with the high-speed technology used on this machine, this guarantees exceptional productivity with very short cycle times.

The grinding wheel is automatically profiled in programmed cycles. The use of profile roll sets for the thread and chamfer makes it possible to grind both the thread as well as the chamfer in a single setup. The optional W-axis enables flexible 2-axis CNC dressing of the chamfer section using a diamond form roll.

Equipped with multiple pallet stations (raw/finished part), the integrated handling system provides for very short workpiece change times thanks to the use of a 6-axis FANUC robot. The machine is equipped with the latest drive and control technology (digital servo drives: Siemens, precision length measuring systems: Heidenhain). Thanks to the workpiece-specific user interface by SMS (HMI), the CNC control system (Siemens 840D sl) can easily be programmed by the operator in the dialogue system and ensures short setup times.

Summary: The GBA 203 has set new benchmarks in the production of threading tools!
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