A three-link, single-degree-of-freedom mechanism, named the Spirograph linkage, is investigated in this thesis. What is special about this open-chain mechanism is that, by the use of a chain and two sprockets and therefore maintaining a constant angular velocity ratio between the two rotating links, the path traced by this mechanism can be shown to be either an epitrochoid or a hypotrochoid. Through the understanding of the formulations of the trochoids, the relations between the design parameters of the Spirograph linkage and the corresponding path patterns are derived. With certain design parameter combinations, the Spirograph linkage is able to feature paths with cusps, which means dwells and are useful in applications. A design chart for such cusp-generating Spirograph linkages is then included in the thesis for the sake of convenience. In addition, by matching the link-length ratio with the angular velocity ratio, ways for finding closed single-loop paths of the Spirograph linkage are also studied. As for the path generation problems concerning only a fraction of the entire path, we compare results given by the classical precision point scheme with assorted combinations of initial conditions. In the latter part of the thesis, non-circular sprockets are also introduced to provide the Spirograph linkage additional freedom to cope with the demand of more flexible, i.e., non-symmetrical shapes of the path. However, many constraints are to be imposed on the design process of such linkages, and these design limitations are elaborated in the thesis. At last, the use of Newton¡¦s method, the selection of the proper type of trochoids, the application of the envelop method for obtaining the profile of the non-circular sprocket, the analyses of angular velocity ratios, etc. are all exemplified in the several numerical examples of the thesis.

The main aim of this thesis is proposing of acceptable technology with manufacture for a part of chain sprocket of the material 11 500, which is designated for a small light motorcycle with a cubature at most 50 cm. It is the prototype, now. The work is specialized on a technology of precision cutting with a pressure edge, at first. This is use for a technology. The component of this work is needed the literary study, calculating and drawing documentation and technical – economic valuation. Et the end of this work, you can see all attachments and all sources, which I used for this work.

This thesis is focused on the design of conveyor of couplers with regard to the requirements for the resolution, and consisting of several parts. The first part outlines the given issue, short research study and an idea of solution. The next part concentrates on the structural design of the whole conveyor. Then the description of the first part of the conveyor including the structural design and the required calculations follow. Finally, other conveyor parts, the budget and the instruction manual are explained. The thesis includes the related drawings and all necessary calculations for other conveyors parts as well.

This diploma thesis deal with project of servis lift drive by special mechanism using thrust chain. There are designed and descrobed the most importana construction unit of servis lift in the this thesis. The calculation as tha static for the main part sof the lift are included in the constructional analysis. The most attention is pay to drive, which is consist of eletric motor, clech, gearbox, break and imposition of sprocket wheel.

The aim of this thesis is to design a service lift according to given parameters, which is actuated by a special mechanism featuring a thrust chain. The opening of the thesis presents basic categorization of lifts. Following chapters are dealing with the design of the lift itself, including selection of components and functional calculation according to ČSN EN 81-1. The final part contains technical comparison with hydraulic lifts. Relevant technical drawings are also part of the thesis.

This diploma thesis deal with project of service lift. The service lift is drive by special mechanism using thrust chain. The chain is led from chain accumulator over sprocket gear to vertical guiding groove. Lift car is connected to the end of chain. There are designed and described the most important constructional unit of service lift in this thesis. But the most attention is pay to drive, including break system and chain accumulator. The drive is consist of electric motor, clutch, break, planetary gearbox and sprocket gear.