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Visual inspection system for automobile piston assembly quality

A technology for visual inspection and automotive pistons, which is applied in the direction of optical testing for flaws/defects, etc. It can solve problems such as limited inspection content and inability to cover piston assembly quality problems, and achieve the effects of eliminating shadows, reducing reflections, and compact equipment layout

Inactive Publication Date: 2011-05-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can replace the visual inspection of workers to detect character errors on the surface of the piston, but its detection content is very limited and cannot cover most of the piston assembly quality problems

Method used

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  • Visual inspection system for automobile piston assembly quality
  • Visual inspection system for automobile piston assembly quality
  • Visual inspection system for automobile piston assembly quality

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Embodiment Construction

[0025] The embodiments of the present invention are described in detail below, and the present embodiment is implemented under the premise of the technical solution of the present invention, and detailed actual dragging methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following Example.

[0026] Such as figure 1 As shown, the present embodiment includes: a piston feed mechanism 1, a piston discharge mechanism 2, a piston detection mechanism 3 and a PLC control module 4, wherein: the PLC control module 4 communicates with the piston feed mechanism 1 through the communication line of the I / O port. It is connected with the piston discharge mechanism 2 and outputs control instructions, and receives the signal of the workpiece in place. The piston detection mechanism 3 is located between the piston feed mechanism 1 and the piston discharge mechanism 2 and is facing the piston 5 to be tested. The piston det...

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Abstract

The present invention relates to a visual inspection system for automotive piston assembly quality, which belongs to the technical field of automated optical inspection. The visual inspection system comprises a piston feeding mechanism, a piston discharging mechanism, a piston detection mechanism and a PLC (programmable logical controller) control module, the PLC control module is connected with the piston feeding mechanism and the piston discharging mechanism through communication lines of an I / O (input / output) port and is used for outputting control commands and receiving work piece in-place signals, and the piston detection mechanism is arranged between the piston feeding mechanism and the piston discharging mechanism and just faces to a piston to be detected, is also connected with the PLC control module and is used for transmitting detection information. The visual inspection system can realize one-step automatic visual inspection of characters on the top surface of the automotive piston, the assembly of a piston ring, the integrity of a graphite layer and the like based on digital images.

Description

technical field [0001] The invention relates to a device in the technical field of automatic optical detection, in particular to a visual detection system for automobile piston assembly quality. Background technique [0002] The piston of an automobile engine is one of the most important devices in the power system of an automobile. It bears alternating mechanical loads and thermal loads, and is a key component in the engine with the worst working conditions. After the processing of the piston aluminum matrix casting is completed, it is necessary to complete multiple processes such as graphite layer spraying, anodic oxidation layer processing, oil hole grooving, and piston ring assembly according to different product requirements. The omission of any one of the processes will affect the quality of the final product of the piston. If the piston ring is missing or reversed, the sealing performance of the cylinder will be damaged, so that the engine cannot work normally. Ther...

Claims

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Application Information

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IPC IPC(8): G01N21/88
Inventor 孙大为蔡艳孔谅杨海澜华学明
Owner SHANGHAI JIAO TONG UNIV
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