Study On Key Technology Of Poultry Eviscerator Based On Digital Design

It is important to improve the whole technology of our nation's Meat Processing Industry with applying the automatic poultry slaughtering equipments. Automatic poultry eviscerating technology has been used widely in many countries to highly promote the corporation's productivity, management efficiency, poultry meat quality and market competition. The poultry automatic eviscerating technology is still blank in China owing to the lack of advanced design technology applying.Mechanical products design is a process "Design—Evaluation—Redesign" of continued optimization. Product innovation relies overwhelmingly on its design. It is important to improve the product's comprehensive quality (TQCSE), such as technology content, innovation and competition with applying the advanced design method for stepping up the corporation's competitiveness.In this paper, the key technology of poultry eviscerator was studied based on the acutual need of engineering project with advanced design technology, the mainworks are as following:The geometry modeling, feature modeling, parametric modeling and digital assembly modeling theory of the mechanic product are researched. The parametric feature modeling is adopted in the poultry automatic eviscerator's parts model building. The virtual assembly and intervention checking are done based on the solid model, which is the basis for the subsequent simulation and optimization.The basic theory of bionic mechanics has been studied. On the base of poultry cavity experiment research, the manipulator's lowest point's movement track has been designed according to reverse-copying. The analytical design method of cam profile controlling manipulator's action is provided. The effect of manipulator's structural parameters on track of manipulator's end is analyzed by simulation analysis which laid the foundation for poultry eviscerating manipulator serialization.The cam profile equation controlling the manipulator's translational movement is deduced by means of space mesh theory, the analyzing result of the cam profile pressure angle shows that the pressure angle less than 35°and meet the cam design requirement. The motion compatibleness of poultry automatic eviscerating actuating parts is studied and the working cycle graph of poultry eviscerating manipulator's actuating parts is finished.Error coefficient of cam mechanism's main structural parameters is analyzed on simulation and the structural parameters error coefficient simulation curve on different position is obtained. the relationship between the error coefficient and radius of cam profile circular arc radius r is analyzed, the analysis of error coefficient shows that control precision of conical cam mechanism is higher than cylindrical cam mechanism. The track of eviscerating manipulator's movement, motion property and motion compatibleness of poultry automatic eviscerating actuating parts is simulated. A group of optimum structure sparameters of eviscerator's frame are obtained with optimal object of minimum weight after taking the static stiffness and strength analysis for eviscerator's frame.Poultry eviscerating experiment research is. The influence factors on the rupture and remains of entrails is analyzed. The test results show that the rate of rupture is relatively high, while the remains of poultry entrails can satisfy the eviscerating processing requirements basically. The equipment's performance need to be proved by parametric optimization.This paper made a deep study on the executive mechanisms and cam controlling mechanism of poultry automatic eviscerator based on digital design technology. This research has important significance to enhancing the design level for all kinds of automatic poultry slaughtering devices and shortening development cycle.