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Minimise vibration created through unstable milling operations

Minimise vibration created through unstable milling operations

Added to MTDCNC by MTDCNC on 26 November 2012

By optimising the variable pitch design of the tangentially mounted indexable inserts, Sumitomo Electric Hardmetal is able to minimise vibration created through unstable milling operations on steel with the company’s latest Sumi Power Mill shoulder milling cutter range PWS (F)400.

Cutter bodies are available from the Princes Risborough based UK headquarters in standard pitch (PWS) having between four and 12 teeth and fine pitch, having between six and 14 teeth.  Body diameters are available between 80 mm and 250 mm. 

The inserts with four cutting edges are mounted tangentially to provide a positive rake angle and incorporates a Sumitomo developed special curved cutting edge able to maintain a stable, smooth and long lasting cutting action.  Inserts are available to suit a wide range of applications including heavy cutting (Type R) aided by serrations on its cutting edge in order to generate smaller chip sizes and for general purpose and light milling (Type G) which has an arched cutting edge.

Recent milling trials on a heavy duty BT50 taper vertical machining centre cutting cast steel under dry conditions demonstrated a doubling of the performance against a leading competitor’s existing cutter.  Using the 200 mm body with 10 teeth and type G inserts against the same size and tooth capacity of the incumbent tool, the Sumitomo PWS Power Mill was run slightly faster at 196 m/min against 170 m/min.  However, a feed rate of 0.4 mm/tooth (1,248 mm/min) was achieved against 0.24 mm (650 mm/min).  The depth of cut was the same for both tool set ups.

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