Modeliranje vakuumskih nogic za gospodinjske aparate

Pečnik, Gregor (author), Ambrož, Miha (mentor), Trajkovski, Jovan (co-mentor)

Namen te diplomske naloge je poenostaviti konstrukcijo oziroma izbiro vakuumske nogice za določen gospodinjski aparat. V literaturi smo našli dva modela, ki opisujeta potrebno silo za izvlek vakuumskih nogic. Opisali smo osnovni princip delovanja nogic in izbiro potrebne sile izvleka, da ugodimo zahtevam gospodinjskega aparata. Da smo ugotovili, koliko zraka vakuumska nogica v fazi pritiskanja iztisne iz aktivnega volumna, smo izdelali računalniško simulacijo faze pritiskanja vakuumske nogice. S 3D tiskalnikom smo izdelali kalupe za silikonske prototipe vakuumskih nogic z različnimi parametri, kot so polmer, debelina stene, čepi na robu nogice in trdota materiala. S prototipi smo na preizkuševališču izvajali meritve sile izvleka. Meritve smo izvajali na dveh podlagah z različno hrapavostjo. S pomočjo rezultatov meritev smo izdelali nov teoretični model, ki predvideva potrebno silo izvleka vakuumske nogice z določenimi parametri.

• Language: Slovenian
• Keywords: vakuumska nogica, sila izvleka, deformacija, aktivna površina, aktivni volumen
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [G. Pečnik]
• Year: 2020
• Number of pages: XXII, 50 str.
• PID: 20.500.12556/RUL-114141
• UDC: 64.06:530.225:004.942(043.2)
• COBISS.SI-ID: 17058587
• Publication date in RUL: 19.02.2020

Secondary language

• Language: English
• Title: Suction cup modeling for household appliances

Abstract

The purpose of this thesis is to simplify the construction or the selection of a suction cup for a certain household appliance. We found two different models in the literature that describe the necessary suction force for the detachment of suction cups. We described the basic principles of a suction cup operation and the choice of a necessary pulling force of the suction cup to meet the household appliance demands. We designed a computer simulation of a suction cup operation in pushing phase to determine the amount of expelled air from the suction cup active volume. A 3D printer was used for making the molds for silicone prototypes with different parameters, such as the radius, wall thickness, material hardness and caps on the edge of the suction cups. The pulling force of prototypes was measured using a test rig. We used two surfaces with different roughness as the basis. The results were used to create a new theoretical model which predicts the necessary pulling force of the suction cup with certain parameters.

• Keywords: suction cup, pulling force, deformation, active surface area, active volume