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GBA 203



GBA ohne W-Achse

The GBA 203 is a fully automated thread-cutting tap grinding  machine,  which  has  been  specially  developed  for the mass production of standard thread-cutting taps with straight or spiral flutes as well as forming taps. The stable basic structure of the machine enables high productivity and precision.

The relief motion is performed by a mechanical unit with a replaceable relief grinding curve. This unit is driven by a servo motor and 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  program med cycles. The use of set rolls 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 and angle 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.

Advantages and special features of the GBA 202:

Significantly reduced workpiece change times and short setup times lead to higher productivity

Further improved machine availability

Use of customer-specific pallets


Workpiece slide:                                     Z-axis
Workpiece drive:                                    C-axis
Grinding support:                                   X-axis
Stroke curve drive:                                 B-axis
Dressing axis radial:                               V-axis
Dressing axis axial (optional):              W-axis


W-axis for flexible dressing (diamond form roll)

Grinding hard metal tools

M1  package:  This  option  allows  grinding  of  threading
tools  as  of  M1  using  a  single  tooth  grinding  wheel  (for
forming taps with pitch correction)

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