Avtomatizacija testirne stiskalnice vzmeti za tovorna vozila

URNAUT, VID (author), Karer, Gorazd (mentor)

Avtomatizacija strojev postaja v današnjem času vedno bolj dostopna in priljubljena, saj s tem povečamo število izdelkov in lajšamo delo delavcev. Diplomska naloga prikazuje postopek razvoja in delovanja avtomatiziranega procesa na testni stiskalnici vzmeti za tovorna vozila za podjetje Springtech Automotive AG. Naloga je bila izdelati ustrezno elektroomaro z vsemi potrebnimi komponentami, ki bodo skrbele za brezhibno delovanje stiskalnice, ter izbrati in ožičiti elektromotor, električne ventile, senzorje pomika in merilno celico. Ker je delovanje stiskalnice avtomatiziran proces, je bilo potrebno napisati program v Siemensovem programskem okolju TIA portal in za operaterja na stiskalnici izdelati uporabniški vmesnik. Operater tako lahko na ekranu v obliki grafa spremlja raztezanje vzmeti v odvisnosti od sile in pomika, meri pomik levega in desnega vozička ter opazuje, pri kakšni sili pride do plastične deformacije vzmeti. Diplomska naloga je sestavljena iz štirih delov, prva dva dela zajemata želje naročnika, delovanje stiskalnice, predstavitev in ožičenje elementov v elektroomari in na stiskalnici. Druga dva dela pa prikazujeta pisanje programa, potrebnega za delovanje, komunikacijo med krmilnikom in operaterjevim računalnikom in nadaljnjo analizo rezultatov, ki jih prikazujejo grafi. S testiranjem lahko primerjamo referenčne vrednosti sile pri določenem stisku vzmeti z dobljenimi meritvami iz stiskalnice in pogledamo, pri kateri sili pride do plastične deformacije vzmeti. Na ta način zagotovimo, da so vse testirane vzmeti znotraj predpisanega tolerančnega območja.

• Language: Slovenian
• Keywords: Stiskalnica vzmeti za tovorna vozila, TIA Portal, električni elementi, modul Siwarex, komunikacija
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2020
• PID: 20.500.12556/RUL-117448
• Publication date in RUL: 10.07.2020

Secondary language

• Language: English
• Title: Automation of a testing press for cargo-vehicle springs

Abstract

Automation is becoming more and more popular and accessible because it enables making more products faster and cheaper. The thesis describes the automation of a testing press for cargo-vehicle springs for Springtech Automotive AG Company. The task was to build a suitable electric enclosure with all the elements that will provide flawless working of a hydraulic press. We had to choose the correct electric engine, electric valves, motion sensor and load cell. Because the hydraulic-press operation is an automated process we had to write a program in Siemens TIA Portal and develop a user interface for the operator. The operator can watch graphs that show how springs expand, how trolleys move and which force causes a plastic deformation of the spring. The thesis is made up of four main parts. The first two parts include the buyers requirements, the explanation how the hydraulic press works, as well as the presentation of elements that are in the electric enclosure and on the press. The last two parts describe the development of the program for the automatic hydraulic press in TIA portal, the communication between the PLC and operator computer, and a further analysis of the results that we get from the graphs. With the tests, we can compare the reference and the measured force values and measure the force that causes a plastic deformation of the spring. In such a manner, wer ensure that particular spring properties are within the predefined tolerance range.

• Keywords: Hydraulic press for cargo vehicles, TIA portal, electrical elements, modul Siwarex, communication