A high-speed self-balancing spindle oil separation structure of inertia friction welding machine

Abstract

The invention discloses an oil separation structure for a high-speed self-balancing main shaft of an inertial friction welding machine. Oil passage and oil return passage; the oil separation member is composed of an oil separation ring with an annular structure, the oil separation ring is rotatably arranged on the main shaft through the rolling bearings at both ends, and a dynamic pressure bearing matching structure is formed between the oil separation ring and the main shaft, The dynamic pressure bearing matching structure is located between the bearings at both ends; the oil inlet channel and the oil return channel communicate with the corresponding oil inlet port and the oil return port through two radial oil channels respectively. The beneficial effect of the present invention is that it can reliably provide hydraulic power, uninterrupted oil pressure self-balancing high-speed high-pressure oil film self-sealing structure, can ensure the safety of the main shaft, and allow the thrust bearing to have a large clearance, which reduces the installation difficulty and damping ; Its service life is long, especially suitable for high-speed and heavy-duty operating environments above 6000r / min.

Description

technical field [0001] The invention relates to inertial friction welding equipment, in particular to an oil separation structure for a high-speed self-balancing main shaft of an inertial friction welding machine. Background technique [0002] Inertial friction welding is a type of friction welding in which the energy required for welding is mainly provided by the rotational kinetic energy stored on the welding machine. In inertia welding, one of the workpieces is attached to the flywheel while the other is not allowed to rotate. Accelerate the flywheel to a predetermined speed to store the required energy, then disengage the drive motor and press the workpiece together with friction, so that the two joint surfaces rub against each other under pressure. As the speed of the flywheel decreases, the kinetic energy stored on the rotating flywheel is converted into heat energy generated by the friction between the welding surfaces and dissipated. The workpiece rotating with the...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-speed self-balancing main shaft oil separation structure for an inertia friction welding machine in order to solve the shortage of poor sealing life of the connection part of the oil separation structure on the main shaft in the existing inertial friction welding equipment. structure, and form a rotating fit structure with the main shaft to match the rolling bearing and the dynamic pressure bearing, and use the high-speed and high-pressure oil film between the high-speed rotating main shaft and the oil separator ring to form a self-sealing structure, so that there is no need to set a seal between two relatively rotating components components for significantly longer service life

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