On-line Compensation Machining Method of Inline Engine Cylinder Head Combustion Chamber

Abstract

The invention provides a method for online compensating processing of the cylinder head combustion chamber of an in-line engine, comprising: measuring the volume of the combustion chamber of the cylinder head to obtain volume data and three-dimensional point cloud data of each combustion chamber; processing the three-dimensional point cloud data , specifically, according to the three-dimensional point cloud data, identify the boundaries of each combustion chamber and then fit each combustion chamber boundary into a circle and use the least square method to calculate the radius of the combustion chamber fitting circle; establish a multi-objective optimization model for solving the milling depth parameters, specifically As, taking the minimum volume difference between two combustion chambers as the objective function, a multi-objective optimization model is established according to the volume data, the radius of each combustion chamber fitting circle and the tolerance constraints of the combustion chamber volume; the multi-objective optimization model is solved to obtain the milling depth parameters; according to The milling depth parameter is used for online compensation processing of the cylinder head combustion chamber. The invention performs online compensation processing on the cylinder head, effectively controls the volume of the combustion chamber of the cylinder head within the range of design parameters, thereby reducing the quantity of unqualified products.

Description

technical field [0001] The invention relates to the processing of a combustion chamber of an engine cylinder head, in particular to an online compensation processing method for an in-line engine cylinder head combustion chamber. Background technique [0002] The engine cylinder head is one of the main parts of the engine, and its quality and machining accuracy directly affect the performance of the automobile engine. Due to the influence of casting and processing technology, the volume of each cylinder in the combustion chamber is different and fluctuates greatly around the volume value required by the design. If the volume difference of each cylinder in the cylinder head combustion chamber is too large, the compression ratio between the cylinders will be different, which will affect the performance of the engine. Compensating the combustion chamber of the cylinder head can control the volume of the combustion chamber of the cylinder head within the range of the design para...

AI Technical Summary

Problems solved by technology

Although this method can well control the volume of the cylinder head combustion chamber within the design volume, the direct machining of the interior of the cylinder head combustion chamber requires the introduction of high-precision processing equipment, and the process of directly machining the interior of the cylinder head combustion chamber is complicated. , so it is difficult to realize online compensation processing

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