OIL PARTS MACHINING
always desirable to be able to machine the part complete on one machine or in the least number of setups,” said Beyer. “There is demand from the fracking segment for horizontal boring mills and horizontal machining centers equipped with
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another one of Fives’ recent developments, the Integrated Contouring Head [ICH],” said Beyer. “Some customers are interested in moving turning operations from a turning center to a boring mill or a horizontal machining center with inte- grated contouring head. If the percent- age of turning versus milling is small or the part is diffi cult to fi xture or highly unbalanced, it makes more sense to do turning operations by spinning the tool on a boring mill than by spinning the part on a lathe,” said Beyer.
“Machining a forged steel main pump housing, called a fl uid end, that weighed in at 10,000 lb [4536 kg], 3000 lb [1361 kg] of metal were roughed off in less than 12 hours, holes bored with the live spindle, and turning operations com- pleted with the ICH,” said Beyer. Recently Fives Giddings & Lewis added a second extended-range ICH. Rated at 56 kW, the extended-range integrated contouring head handles up to 980-mm ID and 780-mm OD. Its U-axis slide stroke of 440 mm can pro- duce small or large-diameter features in a single setup without head changing or operator intervention. It loads tools via the machine’s ATC, which accom- modates tools up to 609-mm long weighing up to 18 kg.
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Twin-Pallet HMCs Machine Precision Parts Plano Machine & Instrument Inc. (Gainesville, TX) has four Kitamura HX-630i HMCs that are being used to machine energy industry parts, princi- pally for the fracking industry, as well specialty parts for precision applica- tions. “We’re primarily 75-80% energy related,” said Billy D. Dennis, production manager. “We machine a lot of internal parts for frack pumps and families of chrome moly parts, including bearing retainers and connecting rods. With the Kitamuras, which have twin oil-cooled ballscrews and twin pallets, we are able
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AdvancedManufacturing.org | February 2015
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