Research On High Adsorption Performance Of Octopus Sucker And Design Of Bionic Sucker

With the continuous progress of science and technology, people’s requirements on the production and the living level of automation have been improving significantly. Since sucker robots and high power of adsorption mechanical equipment become the main components of automatic adsorption equipment, scientific research, industrial production, application of seabed exploratory resource and development fields are becoming more and more popular. Thus, as industrial production and daily life necessities, sucker’s development will also face unprecedented opportunities under this new environment. In order to meet the new sucker with high adsorption capacity and adapt to the requirements of increasingly wide operating environment, operating a wide range of novel chuck with strong adsorption has become the maindirectionofsuckerindustrialdevelopmentin moderntimes. Meeting the needs ofhigh-tech suckeratthesametime,thecompanieswillcreatehugeeconomicinterests.However, adsorption capacity and operating range of current single sucker is limited and the researches onsuckermainly concentrateon suckermaterial, structureandvacuum generating device matched with suckers. By the strong adsorption performance of biological sucker,biological chuck morphological characteristics are used in the design of existing sucker, which will provide a new direction for the study of new sucker with high adsorption and have very importantsignificance.Bionics is introduced as a new subject which imitates biological superb skills, and bionics researches on morphology and structure have become the most common and mature fields.According to the existence of non light form on most organisms, the laboratory has established comprehensive systemofbionic nonsmooth theory. Production ofbionic bit, imitationofengine piston, bionic pistonofslurrypump, bionic needle have showngoodperformancein exploration,machinery, medicine and other multiple fields.According to the morphological characteristics of common sucker, Octopus sucker is selected as a biological prototype, and the high adsorption performance is studied. Using Stereo microscope, Scanning electron microscopy, Atomic force microscopy equipments to observe the biology and kinematics of Octopus sucker and draw a conclusion that the adsorption mechanism of octopus sucker and the role in adsorption performanceofnonsmoothmorphologyonsuckersurface.By applicationof the bionics principle, non smooth forms of line shape, herringbone shape,and ring shape existing on Octopus chuck surface are used in the arrangement design of non smoothshapeinvitalandindustrialsucker.Thus,a totalofninekinds ofgroovebionic suckersare gotten, including a bionic line shape of 5 grooves, 10 grooves and 20 grooves, bionic herringbone shape of 5 grooves, 10 grooves and 20 grooves, bionic ring shape of 2 grooves, 3grooves, and 4 grooves. The experiments of using finite element software-ANSYS Workbench to simulate the adsorption process and analyzing the stress of bottom surface and displacement of the edge deformation for standard sucker and bionic suckers are done. Finally, a conclusion that the surface of the non smooth form distributing on octopus sucker makes sealing effect for sealingareaandedgeadsorptiongreatlybetteris arrived.According to the standard sucker and bionic sucker of 3D model and reverse engineering calculationmethod, thesuctioncupmould models fully supporting thesuckeraredesigned.With application of 3D printing technology, the PLA materials are used to print the suction cup physical mould models. Physical standard suction and bionic sucker castings based on 3D printing technology have the best prescription, sucker quality and effect of the experimental suction process, according to proportioning experiments of silicone material that the quality ratio of transparent silicone, curing agent(sulfide) and silicone oil is 20:1:3 approximate. Under the“dry” and “wet” conditions, adsorbent performance experiments of standard suction and bionic suckers are operated. Comparing to the adsorption properties of standard sucker and bionic suckers, sealing performance influence of bionic non smooth shape on sucker surface is researched. In this experimental consideration, finding out the best adsorption bionic sucker and studying the sealing and adsorption mechanism will provide certain theoretical basis for the studyonsuction’s performanceofnonsmoothshape.