Patent ID: 11964349
Assignee: BEIHANG UNIVERSITY
Field: Control (Instruments)
Classification: CPC B  G  Y | IPC B

Claim 0:
1. An automatic press-fit control method for shaft-hole fitting parts adapted for an automatic press-fit control system, comprising:
step 0: providing the automatic press-fit control system, comprising a plurality of subsystems and a control center, wherein the subsystems comprise:
a loading and unloading control subsystem, configured to control a material conveyor, to detect a material pallet in place, and to control the material pallet lifting and an industrial robot;
a visual inspection subsystem, configured to control rotation of a turntable, and to obtain a hole deviation size and a hole deviation angle of a perimeter hole of each of the parts; and
a press-fit control subsystem, configured to control a stamping motor, to record a rotation number of the stamping motor to obtain a moving distance of a stamping head, and to detect a pressure change on the stamping head during a press-fit assembly process of the parts;
wherein each of the subsystems has respective communication ports to communicate with the control center therethrough;
wherein the control center is configured to interact with a factory IVIES system for operational tasks, to control operation of the subsystems, and to upload fault alarm information to the factory IVIES system;

step 1: sending, by the factory MES system, job assignments to the control center, and subsequently sending, by the control center, loading signals to the loading and unloading control subsystem;
step 2: performing, by the loading and unloading control subsystem, a loading task, wherein the loading and unloading control subsystem sends a loading completion signal to the control center after the loading task is completed;
step 3: sending, by the control center, a detection signal to the visual inspection subsystem after the control center receives the loading completion signal from the loading and unloading control subsystem;
step 4: starting, by the visual inspection subsystem, an inspection process to realize visual inspection after receiving the detection signal, wherein if the visual inspection does not pass, the visual inspection subsystem sends alarm information to the control center, and the control center uploads the alarm information to the factory MES system and waits for manual intervention; and if the visual inspection passes, the visual inspection subsystem sends a visual inspection pass signal to the control center, and the control center sends a press-fit signal to the press-fit control subsystem;
step 5: performing, by the press-fit control subsystem, a press-fit task to realize automatic press-fit assembly of a workpiece after receiving the press-fit signal, wherein the press-fit control subsystem sends a press-fit completion signal to the control center after the automatic press-fit assembly is completed, and wherein if a fault occurs during the press-fit task, the press-fit control subsystem sends a press-fit alarm signal to the control center, and the control center uploads the press-fit alarm signal to the factory IVIES system and waits for manual intervention;
step 6: sending, by the control center, an unloading signal to the loading and unloading control subsystem after receiving the press-fit completion signal, wherein the loading and unloading control subsystem performs an unloading task in response to the unloading signal to realize automatic unloading; and
step 7: sending, by the loading and unloading control subsystem, an unloading completion signal to the control center after completion of the unloading task, thus completing the press-fit assembly of a product.