New Machining Opportunities With Ews Lathe Attachments
20th October 2010
Source:
Gewefa
Three innovative tooling attachment systems introduced by the German EWS Group and available in the UK from Corsham based Gewefa UK, offer the potential to significantly enhance the capabilities of existing NC lathes and increase the profitability and scope of the machine shop.
The EWS gear hobber, slotter and Multiform attachments all convert the rotating movement of a driven tool into a linear movement to give conventional CNC lathes a new machining dimension.
The EWS gear hobber has the B axis effectively integrated within the tool and features a cutter head which can be rotated steplessly 360° around the shaft. The adjustment is done via a toothed gearing with a ratio of 10:1, allowing for the manufacture of small teeth with different pressure angles. The tool is equipped with a speed reducing ratio of 3:1, thus compensating for the increased torque requirement.
With the EWS slotter it is possible to cut key ways up to 8mm wide and 30.5mm long in as little as 6 seconds. The unit operates in much the same way as a powered milling or drilling operation with the drive shaft coupling fitting into the powered tool station on the machine turret. This provides the drive with gearing within the unit converting the rotary drive motion into a Z axis forward motion.
Finally, there is the new EWS Multiform - a system that enables the production of square, hexagon and other shapes on a turning centre with live tool capabilities and the elimination of secondary finishing operations.
Multiform uses a custom internal cam disc unit to produce the required form. For conventional geometry – for example squares and hexagons – standard discs are supplied which manoeuvre the cutting tool to follow a path in order to achieve the desired shape. EWS claims the possibilities for machining ID and OD slots, squares and straight polygons with Multiform are ‘endless’.
Application engineering and technical support for these three accessories is undertaken in the UK by Gewefa UK’s technical support team who are well versed in the application of these and a wide range of tooling and tool holding accessories for precision metal cutting.
For details of the EWS range contact Gewefa technical sales on 01225 811666 or visit the Gewefa web site – www.gewefa.co.uk and follow the link to EWS.
The EWS gear hobber has the B axis effectively integrated within the tool and features a cutter head which can be rotated steplessly 360° around the shaft. The adjustment is done via a toothed gearing with a ratio of 10:1, allowing for the manufacture of small teeth with different pressure angles. The tool is equipped with a speed reducing ratio of 3:1, thus compensating for the increased torque requirement.
With the EWS slotter it is possible to cut key ways up to 8mm wide and 30.5mm long in as little as 6 seconds. The unit operates in much the same way as a powered milling or drilling operation with the drive shaft coupling fitting into the powered tool station on the machine turret. This provides the drive with gearing within the unit converting the rotary drive motion into a Z axis forward motion.
Finally, there is the new EWS Multiform - a system that enables the production of square, hexagon and other shapes on a turning centre with live tool capabilities and the elimination of secondary finishing operations.
Multiform uses a custom internal cam disc unit to produce the required form. For conventional geometry – for example squares and hexagons – standard discs are supplied which manoeuvre the cutting tool to follow a path in order to achieve the desired shape. EWS claims the possibilities for machining ID and OD slots, squares and straight polygons with Multiform are ‘endless’.
Application engineering and technical support for these three accessories is undertaken in the UK by Gewefa UK’s technical support team who are well versed in the application of these and a wide range of tooling and tool holding accessories for precision metal cutting.
For details of the EWS range contact Gewefa technical sales on 01225 811666 or visit the Gewefa web site – www.gewefa.co.uk and follow the link to EWS.
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