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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Simulační posouzení možností tlumení osy X těžkého obráběcího stroje / Simulation Assessment of X Axis Damping Possibilities of Heavy Machine Tool

Štetina, Jakub January 2014 (has links)
This master's thesis deals with the simulation assessment of axis X damping possibilities of Heavy Machine Tools. CAD model has been provided by company TOSHULIN a.s. In the thesis, there is described modelling of axis X as multi body system consisting of rigid and flexible bodies. The main goal is to create simplified model and get the information for strategic decision of manufacturer about damping possibilities of axis X. For the solution has been used several software products: SolidWorks 2013 - for simplifying the CAD models, Ansys 14.5. for modelling od flexible bodies, MSC.Adams for modelling multi body systems and Matlab 2012 for data processing and optimization.
2

Intuitive Design for Maximum Productivity: Leveraging Semi-Automatic Functions in Wheel Loaders : A User-Centered Approach to Enhance Novice Operator Adoption of Semi-Automatic Functions

Norström, Samuel January 2024 (has links)
This thesis explores the adoption of semi-automatic functions in wheel loaders by novice operators with three years of experience, highlighting the design's role in enhancing operator engagement and efficiency in short-cycle loading tasks. Research findings demonstrate that hands-on, practical learning of semi-automatic functions is significantly more effective than theoretical approaches, although both remain crucial. The study identifies a major barrier to adopting semi- automatic functions: the lack of familiarity and previous exposure to these functions, leading to a preference for manual control due to the operator’s traditional method’s comfort and perceived simplicity. To address these challenges, this thesis proposes a design solution that includes clear, easy-to- understand instructions and real-time feedback to help operators recognize the semi-automatic function’s ergonomic and efficiency benefits. Demonstrating the practical advantages of these functions in action has proven to shift operators’ attitudes positively. Furthermore, the operators’ perceptions of their usability and usefulness significantly influence the adoption of semi-automatic functions. The design recommendations advocate for an intuitive interface that offers step-by- step guidance and interactive tutorials, making the semi-automatic functions more accessible and encouraging novice operators to transition more smoothly to semi- automation. Overall, the thesis underscores the importance of a user-centered design approach that facilitates the initial adoption of semi-automatic functions and supports the ongoing development of operator skills and the optimization of work practices in the construction industry. / Denna uppsats utforskar användningen av semi-automatiska funktioner i hjullastare av nybörjaroperatörer med tre års erfarenhet, och lägger vikt på rollen som design spelar för att kunna öka operatörens engagemang och effektivitet under kortcykellastning. Resultatet av forskningen visar att praktisk inlärning av semi-automatiska funktioner är betydligt mer effektiv än teoretiska tillvägagångssätt, även om båda är viktiga. Studien har identifierat ett stort hinder för att använda semi-automatiska funktioner: bristen på bekantskap och tidigare exponering för dessa funktioner, vilket leder till en preferens för manuell kontroll på grund av bekvämlighet och enkelheten av sina traditionella metoder. För att möta dessa utmaningar föreslår denna uppsats en designlösning som inkluderar tydliga, lättförståeliga instruktioner och realtidsfeedback för att hjälpa operatörer att känna igen de ergonomiska och effektivitetsfördelar som halvautomatiska funktioner erbjuder. Att demonstrera de praktiska fördelarna med dessa funktioner under manövrering med fordonet har visat sig positivt påverka operatörernas attityder. Dessutom påverkar operatörernas uppfattningar om användbarheten och nyttan avsevärt användningen av semi-automatiska funktioner. Designrekommendationerna förespråkar ett intuitivt gränssnitt som erbjuder steg- för-stegvägledning vilket gör de semi-automatiska funktionerna mer tillgängliga och uppmuntrar nybörjaroperatörer att övergå smidigare till semi-automatik. Slutligen understryker uppsatsen vikten av en användarcentrerad designmetod som inte bara underlättar den initiala användningen av semi-automatiska funktioner, utan också stödjer den kontinuerliga utvecklingen av operatörers färdigheter och optimeringen av arbetsmetoder inom byggnadsindustrin.
3

3D-Simulation und Planung von Anlagen der Hütten- und Walzwerkstechnik

Oppermann, Ingo 11 May 2009 (has links) (PDF)
In der Präsentation werden typische Engineeringaufgaben präsentiert, die mit modernen IT-Werkzeugen erledigt werden. Es wird auf die Einführung und die Durchgängigkeit eines 3D-CAD-Systems eingegangen und gezeigt, wie mit diesem System Simulations- und Prozesskettenthemen in der Praxis bei der SMS Siemag AG behandelt werden. Ebenfalls anhand von Beispielen wird die Thematik der großen Baugruppen und der Anlagenplanung im 3D-Engineering dargestellt.
4

Konstrukční návrh lineární osy pro těžký obráběcí stroj / Design of linear axis for heavy machine tool

Horák, Miroslav January 2019 (has links)
This diploma thesis deals with the design of linear axis for heavy machine tool. The thesis describes the definition of heavy machine tool and its basic construction nodes. The next chapter describes the components of the linear feed assemblages, the basic principles of use and their advantages and disadvantages. On the basis of this research part there are selected variants of the solution and in the last part of the thesis there is a design of the axis X of the gantry machine tool. Part of the work is a 3D model of the proposed feed assemblages and part of the drawing documentation.
5

Konstrukční návrh lineární osy pro těžký obráběcí stroj / Design of linear axis for heavy machine tool

Kubálek, Petr January 2020 (has links)
This diploma thesis deals with the design of the linear axis of a heavy machine tool. It describes the basic specifications of these machines, their manufacturers, the parts of which the axis consists and the design itself. The design includes several design variants, calculation of the movement mechanism, drive and linear guide. Follows the selection of the most suitable variant and the drawing documentation of the resulting linear axis.
6

3D-Simulation und Planung von Anlagen der Hütten- und Walzwerkstechnik

Oppermann, Ingo 11 May 2009 (has links)
In der Präsentation werden typische Engineeringaufgaben präsentiert, die mit modernen IT-Werkzeugen erledigt werden. Es wird auf die Einführung und die Durchgängigkeit eines 3D-CAD-Systems eingegangen und gezeigt, wie mit diesem System Simulations- und Prozesskettenthemen in der Praxis bei der SMS Siemag AG behandelt werden. Ebenfalls anhand von Beispielen wird die Thematik der großen Baugruppen und der Anlagenplanung im 3D-Engineering dargestellt.
7

Konstrukční návrh lineární osy pro těžký obráběcí stroj / Design of linear axis for heavy machine tool

Göbel, Lukáš January 2017 (has links)
The content of this thesis is the description the various component of the linear feed axis, which are used in heavy duty machine tools. This describes their features, advantages and disadvantages and on these basics, are selected different appropriate design variants. In the second part of this thesis has been drawn up constructional design of these variants. They were subsequently compared and then was chosen the most ideal one for the designed machine, which is heavy machine tool upper gantry type. The work also includes the 3D CAD model of the final version and drawing documentation.

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