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In order to cut the bevel groove of ocean oil and gas pipe, an underwater beveling machine, which was composed of radial feed mechanism, circumferential feed mechanism and milling mechanism, was desinged. The device could cut the double-bevel groove of large-diameter pipe in water and on land by adopting a combined milling cutter, which was composed of one disc milling cutter and two angle cutters...
In order to cut off damaged offshore pipeline, an underwater guillotine pipe saw, which was composed of sine cutting mechanism, eccentric cam mechanism and spiral feed mechanism, was designed. According to its technique process of cutting pipe, dynamic model of the guillotine pipe saw were proposed, and its simulation analyses were finished. Analytical results showed that when there were optimized...
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