Finishing device and method for distributed aero-engine bearing rings

A distributed finishing method for aero-engine bearing rings implemented by a distributed finishing device for aero-engine bearing rings,

• wherein the device comprises a finishing container and N suspension assemblies, and the finishing container comprises a container body and a sealing cover in detachable connection;
• each of the N suspension assemblies comprises a plurality of support rods configured to support bearing rings to be finished and uniformly distributed along a first virtual circle, the finishing container is filled with finishing media;
• the device further comprises a rotary driving motor, a universal joint coupling, mounting frames, and an excitation platform;
• flanges are fixedly connected to central positions of the sealing cover and a bottom wall of the container body outside the finishing container, and support shafts are fixedly connected to the central positions of the sealing cover and the bottom wall of the container body outside the finishing container by the flanges;
• the mounting frames are fixedly connected to the excitation platform by stiffener plates, rotating bearings are rotatably mounted at upper parts of the mounting frames, and the support shafts are connected to the rotating bearings on the mounting frames;
• one of the support shafts is connected to an output shaft of the rotary driving motor through the universal joint coupling, and
• the method comprises the following steps:
• Step 1:
• mounting N bearing rings to be finished onto the N suspension assemblies in the finishing container, filling the container body of the finishing container with the finishing media, and assembling the container body and the sealing cover into the finishing container;
• Step 2:
• fixedly connecting the finishing container to a position between the support shafts by the flanges;
• Step 3:
• starting the rotary driving motor to make the finishing container rotate around an axis thereof at a rotating speed n, starting the excitation platform at the same time to make the finishing container achieve a simple harmonic motion with an amplitude of A1 and a frequency of f1 in a vertical direction, wherein the finishing container forces the finishing media therein to move to carry out finishing on the N bearing rings to be finished;
• Step 4:
• changing an excitation direction of the excitation platform after finishing for time t1, enabling the finishing container to achieve an additional simple harmonic motion with an amplitude of A2 and a frequency of f2 in a horizontal direction consistent with the axis of the finishing container, wherein the finishing container forces the finishing media therein to move to carry out finishing on the N bearing rings to be finished;
• and
• Step 5:
• completing surface finishing of the N bearing rings to be finished after finishing for time t2, turning off the excitation platform and the rotary driving motor, taking down the finishing container, and taking out the N finished bearing rings from the finishing container.