Fluctuation Of Pressure Analysis And Research On Mouth Of The Tongs Of Crankshaft

The motor car engine crank is one of automobile power unit core components, Its manufacture quality requirement is very high. When the engine works, Each power stroke all has the very big alternating load through the piston, above the connecting rod module function, Causes its withstanding repeatedly impact load. These alternating loads make the reverse curving in crank each spot and so on the complex alternate stresses, Extremely easily has the endurance failure in the existence stress concentration fillet place, Usually takes the strengthened measure to perform to solve. Through carries on the fillet to the crank to rolling the strengthenfng, Not only may improve the crank performance, Sharpens the anti- weary distortion ability, Also has the cost low, the efficiency is high and the strengthened effect remarkable merit. Therefore the crank fillet rollings the craft, the equipment and its the correlation technology research has become the current development automobile industry is one of specially passenger vehicle industry essential essential technologies.This article has established the mouth of the tongs partial kinematics and dynamics simplification model, and using the mouth of the tongs partial simplifications model, has established the model kinematics and the dynamic equation, solved the mouth of the tongs place because the clamp resulted in the force of inertia to have the fluctuation of pressure special details. Will use the hydraulic control valve mouth of the tongs pressure implementation ahead of time adjustment for us, will be precise the control mouth of the tongs pressure, by will cause the mouth of the tongs pressure average, will cause on the main journal the remaining stress average, by will enhance rollings the processing quality. Established the crank fillet to rolling strengthened the equivalent column mechanics model, inferred has calculated the crank and rollingsthe cutting tool design parameter, rollings the cutting tool disposition situation as well as the material performance parameter limit rollings the load the formula, proposed the crank rollinged strengthened the increase principle and the limit rollings the load the definite method. Rollinged the craft parameter for the crank fillet the reasonable determination to provide the basis, was helpful in improving and avoids purely experimenting chooses the limitation and blindness which the senate law had.