Analiza tesnega ujema in razvoj postopka montaže z indukcijskim segrevanjem

diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo

Nejc Želinšček (Author), Samo Zupan (Mentor)

Abstract

Treba je optimizirati postopek vtiskovanja statorja v ohišje elektromotorja. Namen je pridobiti idealne parametre vtiskovanja oziroma najkrajši čas segrevanja z indukcijsko zanko, pri čemer ne poškodujemo statorja ter ohišja med samim postopkom. Najprej smo analizirali tesni ujem oz. krčni nased. Želeli smo preveriti, ali so bile tolerance na delavniških risbah pravilno izbrane. S tem je bil določen optimalni standardni ujem Ø 85 H8/u8, ki je zelo podoben predpisanemu. Preden smo se lotili praktičnih preizkusov, smo izvedli vhodno kontrolo statorjev in ohišij, da smo se v nadaljevanju izognili neustreznim preizkusom tesnih ujemov. Sledilo je praktično vtiskovanje, kjer smo na podlagi spremljanja sile vtiskanja statorja v ohišje prišli do idealnih parametrov segrevanja. Ti parametri so tok skozi zanko 300,3 A, frekvenca 170 kHz ter čas segrevanja 18 s. Pri teh parametrih smo dosegli željene rezultate, s katerimi nismo presegli tolerance sile vtiskanja. Temperature ohišij, ki jih dosežemo, znašajo nekje med 151 °C in 153 °C.

Keywords

diplomske naloge;elektromotorji;tesni ujem;indukcijsko segrevanje;prototipi;ohišja;statorji;

Data

Language:	Slovenian
Year of publishing:	2019
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[N. Želinšček]
UDC:	621.313.13:62-112.6(043.2)
COBISS:	16622107
Views:	2532
Downloads:	266
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Interference fit analysis and development of the process of assembly using inductive heating
Secondary abstract:	It is necessary to optimize the process of assembly the stator into the casing of an electric motor. The purpose is to determine ideal parameters of indentation, and the shortest time possible of heating using an induction loop where the stator and casing are not compromised during the procedure. First we functionally analysed the interference fit i.e. press fit. We wanted to check if the tolerances on the engineering drawings were chosen correctly. We determined the optimal ISO standard fit Ø85 H8/u8, which is very similar to the one already stipulated. Before we started with the practical tests, we implemented an incoming inspection of the stators and casings, thus preventing inadequate tests of assembled interference fits. This was followed by practical assembly tests, where we determined the ideal parameters of heating by observing the force of indentation of the stator into the casings. These parameters are: current flowing in the loop wire 300.3 A; frequency 170 kHz; and time of heating 18 s. Using these parameters we attained the desired results, where we did not exceed the tolerance of the force of assembly. The casings' temperatures that we reached are between 151 °C in 153 °C.
Secondary keywords:	electric motors;interference fit;induction heating;prototypes;casings;stators;
Type (COBISS):	Bachelor thesis/paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za strojništvo
Pages:	XXIV, 74 str.
ID:	11135141