Research On Polishing Method Of Optical Fiber Endface And Numerical Control System

With the development of optical fiber communications,the demand for optical fibers continues to increase,and the demand for large-scale optical fiber production and processing continues to rise.Domestic optical fiber mass production and processing mainly use foreign-produced machines.With the aging of foreign optical fiber production and processing equipment purchased in the early domestic period,some parts of the machine have stopped supplying,and when these machines have mechanical failures and need to be repaired,they often need to ask foreign countries.The technicians from the country came to repair,and domestic personnel were not allowed to be present during the period.As a result,the domestic technicians lacked the ability to repair such machines,failures could not be solved in time,and production was forced to be interrupted.Maintenance costs are increasing year by year,and its simple structure,single function,and relatively low degree of automation are difficult to meet the current processing needs of the factory.Aiming at the problems of frequent failures,difficult maintenance and low degree of control automation caused by the aging of foreign equipment,this paper studies the grinding process requirements of various optical fiber end face shapes based on the grinding principle of optical fiber materials,and develops GALIL-based control The main research content of this paper is as follows:(1)The process requirements of the optical fiber end face grinding system were designed,the brittle-plastic transition conditions of a single diamond abrasive grain in cutting the optical fiber material were studied,and the critical cutting depth for plastic removal of the optical fiber material was calculated.According to the machining parameters of the machine during grinding,the corresponding grinding force is calculated,and then the maximum cutting depth of the corresponding single diamond abrasive grain is calculated from the grinding force,and compared with the plastic cutting depth,the machine processing is checked and improved Parameters such as abrasive grain size,feed speed,grinding wheel speed and elongation in use.Analyzed the grinding processing methods of five different end face shapes of the optical fiber,and provided the design basis for the design of the optical fiber end face grinding system.(2)The mechanical structure of the optical fiber end face grinding system was designed and the main motion parameters of the equipment were analyzed,and a five-axis optical fiber end face grinding system was developed.The grinding wheel spindle is driven by a high-speed electric spindle.The X and Z axes are driven by a ball screw mechanism and a servo motor to realize the precise feed of the spindle mechanism and the workpiece table.The A axis(workpiece axis)is directly connected to the servo motor to realize the rotation and rotation of the optical fiber.Angle control,B axis realizes angle adjustment between X axis and Z axis through servo motor and worm gear mechanism.(3)Developed an optical fiber end-face grinding control system based on Galil controller.The control system takes Galil motion controller and industrial computer as the control core,servo motor and high-speed electric spindle motor as the action execution components,adopts C# language and calls the API of the control card The function completes the design of the foreground control interface and background management function of the control system.Combine the processing instruction code provided by the control card to complete the processing program design of various end faces.The designed optical fiber end face polishing control system can realize a variety of end face processing.Most of its parts adopt mature standard parts that can be purchased on the market,which greatly reduces maintenance costs and difficulty while ensuring reliability.