ABB PM866 3BSE050200R1

ABB PM866 3BSE050200R1

ABB PM866 3BSE050200R1

In order to meet the needs of dynamic balance testing for crankshaft components of general gasoline engines, enterprises have developed specialized dynamic balance machines. But this type of dynamic balancing machine cannot meet the needs of rapid detection and weight removal operations on the production line. Therefore, the development of a universal gasoline engine crankshaft dynamic balance detection and automatic weight removal system can reduce measurement costs, improve testing accuracy and efficiency, achieve fully automatic weight removal, and reduce the imbalance of the crankshaft to the allowable range. 1. System Mechanical Structure Design 1.1 Testing Part Mechanical Structure Design Testing Part Mechanical Structure Composition is shown in Figure 1. To meet the requirements of precision indexing for heavy cutting and the need for firm clamping during drilling, a loop belt transmission is adopted. Usually, the belt of a ring belt type dynamic balancing machine spans between two balancing frames. As the crankshaft does not have a belt installation position between the two balancing frames, this plan uses a connecting shaft with a 1:5 taper at one end of the crankshaft parts. The carefully balanced driven toothed pulley is first installed, and then the crankshaft parts are transmitted through the active toothed pulley and toothed belt on the AC servo motor shaft. When testing dynamic balance, the AC servo motor drives the crankshaft to rotate at high speed through a toothed belt. During weight removal, the AC servo controller is used to accurately rotate the servo motor at low speed. This transmission method can achieve high rotational speed for dynamic balance measurement, as well as precise indexing of the crankshaft during drilling and weight removal, and firmly clamping the crankshaft parts, enabling normal drilling work. During dynamic balance testing, the unbalanced centrifugal force generated by the high-speed rotation of the crankshaft excites the balance frame, causing it to vibrate. Through piezoelectric sensors installed in the balance frames 1 and 2, the information of the unbalanced vibration on both sides is converted into electrical signals,

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