The Study On Balancing Technology In Modification Of Crankshaft Balancing Machine

Dynamic balancing technology is a very difficult application together with mechanic technology,electronic technology,instrument technology and measurement technology。Dynamic balance for automobile crankshaft becomes more complex because of crankshaft rotor character。Domestic scholars and specialists have done lots research work and obtained much success,but there are very big space to overtake the developed country。Much still have to be done to continually improve the technology level in it。This paper describes technical modification for automobile crankshaft balancing machine。It is one of the projects that Dong Feng engine plant manufactures the different parts in old processing line。How parts of the machine reconstruct is introduced according to the new crank。The main contents of the paper as following:The background of crankshaft balancing technology of the world and domestic has been analyzed。According the current situation of the machine a efficient way is made。Vibration is the basic of the balancing machine。In order to analyze the relative influence the rotor-frame system is simplified and the dynamic model of the rotor-frame system is set up;The influence that dynamic flexibility on the unbalance is calculated and analyzed;The parameters such as speed, length of bearing position are reasonably chosen so that the stability of the vibration system is nicer and the sensitivity is higher。Calibration methods of balancing machine are introduced。Vector influence coefficient method can compensate the phase error between the vibration vector and unbalance vector。The mathematics matrix of vector influence coefficient and calculation of the coefficient are introduced。The process of calibration and optimization of the coefficient are also introduced。The way about correcting and drilling of crankshaft eight correction plane and the separating calculation of unbalance are studied。The separating...