Investigation of the effects of design of shaft and lever assembly after welding on circular and axial runout

V zaključni nalogi smo se osredotočili na izboljšanje sestava gredi in vzvoda, ki je izpostavljen izmenični obremenitvi vrtilnega momenta in statični obremenitvi aksialne sile. Podane so prostorske omejitve, zahteve tesnjenja med gredjo in vzvodom ter zahteve točnosti lege. Spoj mora biti kakovosten, saj so prisotni vplivi okolice, kot so: korozivni medij, vibracije do 50 g, temperaturna nihanja okolice med ?40 in 120 °C ter toplotni tokovi med gredjo, segreto na 700 °C, in vzvodom pri temperaturi okolice. V nadaljevanju dela smo se osredotočili predvsem na ključne vplive končne soosnosti. Preiskovali smo opletanje in krožni tek sestava gredi in vzvoda po varjenju, če ne varimo v namenski pripravi. Najprimernejše variante smo izdelali in jih eksperimentalno testirali ter ovrednotili na več načinov. Prišli smo do zaključkov, da se med enakimi vzorci pri meritvah pojavi velik raztros, ki je posledica neponovljivosti ročnega varjenja in kakovosti varjenja varilca.In the final thesis, we focused on improving the shaft and leverage assembly, which is exposed to alternating load torque and static load axial force. We have limited space to fit this, assembly in. There are also given requirements for accuracy of position and sealing between shaft and flange. The assembly must be of good quality, as there are environmental influences such as: corrosive medium, vibrations up to 50 g, temperature differences of surroundings between –40 and 120 °C and heat fluxes between the shaft heated to 700 °C and the lever at ambient temperature. We mostly focused key impacts on coaxiality. We investigated axial runout and circular runout after welding shaft and lever in to the assembly. When we are not welding in a purpose-built preparation. The most suitable designs were made and tested experimentally in number of ways. In conclusion we found out that a large spread occurs between measurements of the same samples. That is a consequence of the unrepeatability of manual welding and the quality of welder