Processing method for engine crankshaft vibration damping pulley wheel hub with end surface rat fluted disc

Abstract

The invention relates to a processing method for engine crankshaft vibration damping pulley wheel hub with end surface rat fluted disc. The specific steps are as follows: (1) processing an end surface rat fluted disc A on the metal circular sheet material by using end surface spinning technology; (2) processing a cylindrical assembling surface B at the outer side of the end surface rat fluted disc A by the spinning technology; (3) processing a curve C on the outer side radiation plate of the cylindrical assembling surface B by the spinning technology; (4) processing a multi-wedge tooth D on the blank excircle obtained in above procedures by the spinning technology; (5) processing an annular assembling surface E with an anti-slide bulge at the inner side of the multi-wedge tooth D by machining method; (6) punching a technological hole 1 and an installing hole F on the spoke. The processing method for engine crankshaft vibration damping pulley wheel hub with end surface rat fluted disc has the end surface rat tooth to be tightly engaged with the crankshaft tail, thus the transmission is precise and the transfer torque is larger; meanwhile, by fully using the spinning technology, the processing method is simple in manufacturing technique, convenient in installation and low in cost; at the same time, the processing method has small dynamic balance quantity, lowers noise of the engine and improves service life of the crankshaft.

Description

technical field [0001] The invention relates to a crankshaft pulley in an engine accessory transmission system, in particular to a processing method for an engine crankshaft vibration-damping pulley hub with an end rattoed disc. Background technique [0002] The engine electronic control system consists of sensors, electronic control unit ECU (Electronic Control Unit) and actuators. The sensor inputs the working state parameters of the engine into the electronic control unit ECU in the form of electronic signals and data. Gas and other systems issue corresponding signal commands to make the engine perform at its best. The sensor generally collects signals through a signal disc assembled with a vibration-absorbing pulley. With the development of the automobile industry, the accuracy of the signal collected by the sensor is getting higher and higher, which also puts forward higher and higher requirements for the synchronous operation of the vibration-absorbing pulley and the...

AI Technical Summary

Problems solved by technology

The existing vibration-absorbing pulley is generally fastened together with the end of the crankshaft by bolts. Once the assembly and debugging are completed, the bolts cannot be loosened, otherwise the accuracy of signal acquisition will be seriously affected.

The existing vibration-damping pulley is assembled with the end of the crankshaft, and the key connection is generally used to prevent relative sliding. The assembly of the key connection is relatively complicated, and at the same time, a high requirement is placed on the thickness of the center hole of the vibration-damping pulley, which requires that the vibration-damping pulley must use cast iron manufacturing

The application publication date is July 20, 2011, and the invention patent with the application publication number CN 102128246A discloses a spinning-formed engine shock absorber pulley ( figure 1 ), but this invention cannot guarantee the accuracy of synchronous operation with the end of the crankshaft, and cannot effectively achieve easy assembly with the end of the crankshaft

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