Cylinder head conduit press-fitting method, system and device with self-adaptive characteristics

Abstract

The invention discloses a cylinder head duct press-fitting method, system and device with self-adaptive characteristics. The press-fitting method includes the following steps: obtaining the air pressure signal sprayed between the bottom surface of the press-fitting head and the cylinder head press-fitting step surface; according to the obtained air pressure signal to obtain the real-time distance from the bottom surface of the press-fit head to the press-fit step surface of the cylinder head; according to the obtained real-time distance, obtain the press-fit depth value of the conduit to be pressed into the conduit hole of the cylinder head, and judge the numerical range of the press-fit depth value ; When it is detected that the press-fit depth value does not reach the preset value range, the control drives the press-fit head to move down until the press-fit depth value reaches the preset value range. The cylinder head conduit press-fitting method with self-adaptive characteristics provided by the present invention controls and drives the press-fitting head to adjust adaptively until the press-fit depth value reaches a preset value range, avoiding the occurrence of bad press-fitting phenomena; improving the efficiency of cylinder head press-fit conduit Increase production efficiency and reduce waste rate.

Description

technical field [0001] The invention relates to the field of assembly detection, in particular to a press-fitting method for a cylinder head conduit with self-adaptive characteristics. Background technique [0002] In the field of engine manufacturing, there are strict requirements on the depth d of the cylinder head conduit press-in, and the press-in depth d refers to the distance from the press-in end of the conduit to the press-fitting step surface of the cylinder head. [0003] The current mainstream catheter press-fitting process uses hydraulic cylinders or servo electro-hydraulic cylinders as the power source, setting mechanical limits or servo-set strokes as signals for press-fitting in place, or using a mix of the two methods. [0004] In the prior art, the hydraulic cylinder is used as the power source for the press-fitting of the conduit, and the signal of the press-fitting is to set the mechanical limit. However, during product processing, for different cylinder ...

AI Technical Summary

Problems solved by technology

However, during product processing, for different cylinder head workpieces, the distance from the processed conduit press-fitting step surface to the press-fit positioning surface is randomly distributed within a certain error range; the same cylinder head workpiece has 16 steps for a 4-cylinder machine surface, the position will also fluctuate randomly within a certain error range

The current mechanical limit press-fit stroke is fixed, and the press-fit stroke cannot be automatically adjusted with the position fluctuation of the workpiece press-fit surface. One result is that the press-fit head has reached the limit point, but has not touched the press-fit step surface. Insufficient press-in depth of the conduit; another result is that the press-fit head has not reached the limit point, but has contacted the press-fit step surface, causing the cylinder head to deform under pressure

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