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

A technology of engine cylinder head and combustion chamber, which is applied in metal processing equipment, manufacturing tools, milling machine equipment details, etc., can solve the problems of complex process of direct processing inside the cylinder head combustion chamber and difficulty in realizing online compensation processing, and achieve important projects Practical value, satisfactory measurement time, and fast measurement speed

Active Publication Date: 2017-11-14
SHANGHAI JIAO TONG UNIV
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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

Method used

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

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0051] Such as Figure 1 to Figure 7 As shown, in this embodiment, the method for on-line compensation machining of the in-line engine cylinder head combustion chamber provided by the present invention includes the following steps:

[0052] Step 1: Use the cylinder head combustion chamber volume online measurement equipment to measure the engine cylinder head combustion chamber volume, and obtain the volume data and 3D point cloud data of each combustion chamber. The unit of volume data is ml, and t...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C3/00
Inventor 杜世昌黄德林吴卓琦王猛金隼
Owner SHANGHAI JIAO TONG UNIV
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