A machining method for a floating gearbox of a self-elevating multifunctional service platform

Abstract

The invention provides a machining method for a floating gear box of a self-elevating multifunctional service platform, which includes the following steps: machining the end face of a cylinder, machining a positioning plate, machining a motor installation groove and a secondary clamping reference plane, and supporting a round hole End step surface processing, boring processing, marking and scribing, motor slot width and fillet processing, floating gearbox bottom and top surface processing, secondary clamping, gantry milling machine processing. The present invention employs two types of machine tools with limited processing capabilities. In the case that the floating gearbox is horizontal relative to the machine tool, milling and boring are performed on the support round hole on the upper layer of the floating gearbox, and the positioning datum plane is processed. Place the contact surface of the floating gearbox on the equal-height block of the gantry milling machine, clamp it twice, and use the gantry machine to process the wear-resistant plate slot, so that two kinds of machine tools with limited processing capacity can be used to process large-volume The purpose of the floating gearbox is to reduce the requirements on the machining machine tools, while parallel processing improves production efficiency.

Description

technical field [0001] The invention relates to the field of marine engineering equipment, in particular to a machining method for a floating gearbox of a self-elevating multifunctional service platform. Background technique [0002] The self-elevating multifunctional service platform is mainly used for offshore oilfield services, life support and wind power installation. From bottom to top, the platform is mainly composed of spud boots, spud legs, main hull, lifting tower, living building and helicopter deck. Among them, the gearbox is a key component located between the lifting towers and providing power for the whole platform lifting. [0003] The self-elevating multifunctional service platform has 4 lift towers, each lift tower is equipped with 3 sets of gear boxes, and each set of gear boxes is equipped with gears, motors and braking devices. The gearbox is responsible for lifting the platform to a predetermined height to overcome the impact of the harsh marine enviro...

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Problems solved by technology

[0008] 3. The installation end face of the support round hole involves the matching of the gear of the lifting motor and the rack of the leg, so the distance from the installation end face of the support round hole to the center line of the card slot must be guaranteed;

[0010] Due to the large volume of the floating gearbox, with a size of 3520mm (height) x 2300mm (width) x 1200mm (depth), great requirements are placed on the machining stroke of the machining machine tool. The existing conventional milling and boring machines in many shipyards cannot meet the entire floating gearbox. Gearbox one-time machining

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