Full hydraulic drive closed double spindle CNC underwater friction welding equipment

Abstract

The invention discloses a full-hydraulic pressure drive closing type dual-main shaft numerical control underwater friction welding device, and the full-hydraulic pressure drive closing type dual-main shaft numerical control underwater friction welding device comprises two sets of location clamping mechanisms being symmetrically formed at the left side and right side, a mobile supporting shelf is formed on the two sets of location clamping mechanisms for glidingly connecting to the same along circumference direction, a circumference direction moving mechanism connected to the mobile supporting shelf is formed at the outer side of each set of location clamping mechanism, the mobile supporting shelf is provided with a main shaft shelf glidingly connected to the same along axial direction, the main shaft shelf is driven by the axial direction moving mechanism, which is installed on the mobile supporting shelf, a low speed main shaft head and a high speed main shaft head formed along the vertical direction are mounted on the main shaft shelf. The full-hydraulic pressure drive closing type dual-main shaft numerical control underwater friction welding device is strong in rigidity, the main shaft can work stably, the drive is exact and reliable, and the locating and clamping mechanism adaptability is good.

Description

technical field [0001] The invention relates to a numerical control friction welding machine, in particular to a fully hydraulically driven closed double-spindle numerical control underwater friction welding equipment. Background technique [0002] Nowadays, countries all over the world attach great importance to seabed resources, and the exploitation and utilization of seabed resources are intensifying, so there is an urgent need for safe, reliable and economical underwater connection repair technology and equipment. The underwater mechanical connection operation is complicated, the quality of wet welding is poor, and the cost of dry welding is high. However, friction stitch welding technology has the advantages of insensitivity to water depth, small welding deformation, high efficiency, and low energy consumption. Therefore, it has been widely used in recent years. application. [0003] Chinese patent document CN103071914A disclosed an underwater friction stitch welding e...

AI Technical Summary

Problems solved by technology

The equipment is equipped with only one spindle head to complete the drilling, plug welding, cutting and grinding work in the repair process. Since the required speed for drilling and grinding is about 400r / min, the required speed for plug welding and cutting is 8000r / min. Min, and the repair objects are mostly difficult-to-machine materials such as DH36, which will cause work hardening after welding. The same spindle head can complete various tasks with large speed differences, which may easily lead to unstable work

The drive of the equipment is realized by the gear rack driven by the motor acceleration and decelerator. There is a transmission backlash, and the transmission accuracy is not high, which has an adverse effect on the repair quality.

To sum up, the limitations of the above structure are: a single spindle completes multiple tasks, which is likely to cause unstable work; the driving form of the motor accelerator and reducer drives the rack, and there is a transmission backlash, which has an adverse effect on the repair quality

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