TPT November 2017

Servo double end finisher for pipe couplings

The tube is pre-formed on both ends, which causes excess material to elongate randomly from the ends. The challenge was three-fold: accurately locate the part in relation to the formed sections; be able to machine varying amounts of material from each end; and control the chip load.

A MECHANICAL pipe coupling manufacturer has chosen Haven Manufacturing to design and build a double end finishing machine for pre- formed stainless steel couplings. The unique application required several modifications to Haven’s Model #922 short length double end finisher.

Part location was solved by designing clamp jaws that are dedicated to each tube configuration. They ‘lock’ in the tube, so that the critical dimension from the profile to the end of the tube is consistently maintained. The amount of material removal and the subsequent chip generation is controlled through the use of

Finished pipe samples

servo spindle feed control. Each end is independently machined to its exact length, and a ‘peck’ feed motion controls the amount of material removal per spindle revolution.

Haven Manufacturing – USA Fax: +1 912 264 9001 Email: sales@havencut.com Website: www.havencut.com

End finishing machine

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NOVEMBER 2017