Development Of Control System For Automatic Inspected Instrument On Parameters Of Piston Ring

Piston ring is one of the important parts for engines. Its performance has decisive influence on the quality and efficiency of the engine. The tightness between the piston ring and cylinder wall directly determine the engine's efficiency. Its technological level and the scale of production will directly affect the piston ring industry and even the automobile engine development process. Light-gap tightness degree and the piston ring end clearance are the two main indicators. Currently in domestic, Light-gap tightness and the end clearance of the piston ring are inspected manually but the Automatic Inspected Instrument on Parameters of Train Piston Ring. There are some problems when inspected manually, such as ,low inspection testing quality, low efficiency and labor-intensive. Auto piston ring is mass production, which required a high efficiency detection, with accuracy and reliability.This issue is sub-topics of one of "national major project issues" - auto parts precision coupling of automated detection of common technology based on laser / CCD principles, which name is"research on Automatic Inspected Instrument on Light-gap tightness and the end clearance of the piston ring". This issue used programmable logic control PLC, the host device IPC, PCI data acquisition card, combining with advanced optical detection technology and computer vision technology, developed evaluating machine on Light-gap tightness degree and the piston ring end clearance, achieved automated, visualization and high-speed detection sorting on auto piston ring Light-gap tightness and the end clearance.The main work of the thesis includes the following aspects:1.Designed the overall structure of Control System for Automatic Inspected Instrument on Parameters of Piston Ring2. Based on the mechanical structure of the control system , formulate a reasonable control scheme, control different parts of the system combined with the advantages of PLC and PCI data acquisition card.3.Designed sorting process based on the control scheme, designed and completed the control flow, design external circuits and eliminates the the external environment noise sorting where machine work in.4. Discuss and design a sorting machine control interface, combined with industrial-site characteristics and the operation of customary and reasonable workers, designed a simple and user-friendly control interface.5.Analyse the experimental device positioning accuracy and repeatability of positioning precision, by constantly modify the program and the external circuit, allowing the system to achieve a high positioning accuracy and repeatability.