Research On Cyclone Milling Technology And Tool For V-Groove Of Aerospace Joint Bearing

The aviation self-lubricating joint bearing with V-groove is an important basic component of aircraft,which has excellent characteristics such as low friction,large bearing capacity,impact corrosion resistance,compact installation structure,long service life,and wide temperature range.The installation and fixation process is one of the core technologies of self-lubricating joint bearings.The machining quality of the V-groove on its end face affects the quality of its flange installation and fixation.The cutting during the machining process affects the quality of the clearance,especially if the cutting force is too high,causing the inner and outer rings of the bearing to lock or the starting torque exceeds the standard requirements.Therefore,this article proposes and studies the cyclone milling process method for processing V-grooves,and the main research content is as follows:Firstly,the extrusion process before V-groove processing and the processing process of forming semi-finished products were introduced.The fixtures for the outer circular end face and V-groove processing were designed,and the manufacturing requirements for Vgroove were elaborated.Then,three methods for processing V-grooves and corresponding interference concepts were analyzed.Universal blades and formed turning tools were used to process V-grooves on the bearing end face,and a whirlwind milling process method was proposed to process V-grooves.The characteristics of the three processing methods were compared.Then,the relationship analysis and interference analysis between the V-groove and tool motion in the cyclone milling were conducted.On the basis of establishing a coordinate system,by establishing and analyzing geometric relationships,the geometric relationship between blade motion and V-groove,as well as the corresponding surface equation,were derived.A geometric method for analyzing interference was provided,and the analysis of tool rotation radius and angle under non-interference constraints was conducted.The range of tool rotation radius and angle under typical V-groove dimensions was obtained.Using Deform software,numerical calculations were conducted on the cyclone milling process,a simulation plan for the cutting process was determined,the modeling process was elaborated in detail,the cutting force control level was studied,the cutting method and rotary cutting parameters were analyzed,the cutting parameters used for calculation were determined,and a numerical calculation model was established.The calculation results were analyzed and summarized.