Analiza nosivosti asimetričnih cilindričnih zupčanika

undergraduate thesis

• Title (english): Load capacity analysis of cylindrical asymmetric gears
• Author: Mihael Mezga
• Mentor: Krešimir Vučković (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2024-02-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Precision Mechanical Engineering

Abstract

Odabirom različitih kutova nagiba profila osnovne ozubnice dobiva se geometrija ozubljenja koju nazivamo asimetričnom. Nosivosti korijena i boka zuba nedvojbeno ovise o toj geometriji. U ovome radu opisana je osnovna geometrija vezana uz asimetrično ozubljenje, opisani su postupci proračunavanja nosivosti korijena i boka asimetričnog zuba zupčanika te je izvršena analiza nosivosti asimetričnog ozubljenja u ovisnosti o promjeni pojedinih parametara geometrije. Postupak proračunavanja nosivosti korijena asimetričnog ozubljenja preuzet je od Langheinricha koji je primjenom metode konačnih elemenata modificirao postojeću normu ISO 6336-3 te u proračun uveo nove faktore kako bi korigirao ovisnost geometrije asimetričnog zuba. Postupak proračunavanja nosivosti korijena ostaje isti te se vrši prema normi ISO 6336-2. Analiza nosivosti provedena je u programskom paketu KISSsoft te je provedena za različite kutove nagiba aktivnog boka, kutove nagiba neaktivnog boka, polumjere zaobljenja korijena osnovne ozubnice te module. Konačni rezultati analize pokazali su da se promjenom geometrije asimetričnog ozubljenja mogu postići značajne promjene u nosivosti korijena i boka, indicirajući na superiornost geometrije asimetričnog ozubljenja.

Abstract (english)

By choosing the different pressure angles of a basic rack we get gearing geometry that is called asymmetrical gearing. Load capacity of a tooth root and a flank highly depend on mentioned geometry. This thesis describes the basic geometry of an asymmetric gearing, calculation of load capacity for tooth root and a flank of an asymmetric gear and an analysis of load capacity for asymmetric gearing depending on the change of given geometry parameters. Calculation of load capacity for tooth root of an asymmetric gear was taken from Langheinrich, who used finite element analysis method to modify the existing ISO 6336-3 standard by introducing new factors for correcting an influence of a pressure angle change. Calculation of flank load capacity stays the same and is calculated using the ISO 6336-2 standard. Load capacity analysis in this thesis was made using software package KISSsoft and was carried for different pressure angles on drive side, pressure angles on coast side, tooth root fillets of a basic rack and moduli. Final results of an analysis showed great changes in both load capacity of tooth flank and tooth root for different geometry settings, indicating the superiority of an asymmetric gearing.

• Keywords: zupčanik; ozubljenje; asimetrično ozubljenje; nosivost korijena; nosivost boka; modul; polumjer zaobljenja korijena; kut nagiba
• Keywords (english): gear; gearing; asymmetric gearing; tooth root load capacity; flank load capacity; modulus; tooth root fillet; pressure angle
• Language: croatian
• URN:NBN: urn:nbn:hr:235:243140
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2026-03-01
• Created on: 2024-02-27 21:29:54