The car seat is tested in the conditions of real car operation, ie under the conditions of multi-axis loading. We will examine all the possible parameters and maybe find some objective conclusions for the car seat design. The content of this article is the innovation of car seat measurement device in...

Low-cost is an increasingly inflected theme in the mechanical engineering world. A cost reducing leads to the development of new solutions, that could not be used in non-commercional sector before. One of this solution is the free hardware programmable platform called Arduino. This platform is very popular...

Testing of real properties of textile specimens is needed during the development of new textile structures. One of the basic test is determining the specimen stiffness, it means measurement of the dependence of the force on the textile material stretching. Textile materials are mostly used in technical...

Used plastics are all around us. Their production is excessive and presents a big problem today and an even bigger problem for the future. They are used very often for their positive qualities. Just as the pros also have their negatives. One of the biggest drawbacks is the decomposition time of this...

The aim of the article is to report the methods of solving the construction of the electric car frame. The electric car is designed for movement in the field. This is a functional model marked generation 0. The electric car should move in the field according to the specified trajectories with a load...

The paper deals with the design of the hydraulic quick coupling, which is based on specified parameters of international standard ISO 16028. The goal was to simplify the assembly of the quick coupling using innovative methods. Design for Assembly is a method used for reducing the complexity of the assembly,...

The car seat comfort depends on many parameters of the seat and the characteristics of the people sitting on the seat. Each person is different, behaves differently and feels differently. The seat cannot suit everyone, or it must be required the car seat to adapt automatically to the person sitting on...

During the forging process, the significant impact forces from working parts of a power forging hammer appear. Usually, forging hammers are tightly connected to the ground or use standard suspension systems based on, e.g. wooden beams. Then the impact forces may be easily transmitted to the ground of...

This paper contains a search of the issue of handling and handling jigs in the field of die casting of aluminum alloys. The paper deals with the design of a hydraulic manipulator of injection molds for pressure casting of aluminum alloys. Several basic variants of a possible solution have been proposed...

CAD programs are used in engineering environment on a daily basis, because of their wide use in designing, machining or evaluating process. This fact boosted the development and impact range of CAD software possibilities, but in the field of gears, there may be some shortcomings. These shortcomings are...

For flange joints of pressure vessels, bolts are most commonly used. Even though they may seem to be only simple mechanical elements, the reality is ever so different. In some fields of engineering practice, these connections must meet particularly high technical requirements. The article discusses the...

This paper deals with design problematics of a clamping joint for the tanker frame in a rail vehicle. This car body is made from aluminum alloy. The main requirement of the joint is safe transmission the load given by the norm ČSN EN 12 663-1. At the beginning of the study is make the analysis of friction...

In the contribution is made FEM calculation of frames of freight electric vehicles. A comparison is made between welded and screwed frame joints of high strength steel. A strength check was carried out on the basis of the tensile tests of the welded material and a check with screwed version.

At our workplace, we deal with research in the broad field of machine parts and mechanisms. It is very appropriate and needful to utilize the knowledge gained from our extensive research also in an educational process. Therefore, the aim of this paper is to present one of our educational activities,...

This paper includes the designing of the Railway Power Pack used by the Container Corporation of India. The power packs when in motion are subjected to several forces and their failures have resulted in many casualties. The work starts with the designing of the Power Pack container, with all its major...

This paper presents a simple way of derivation of analytical solution for the stress (load) redistribution within a simple beam composed of multiple individual profiles. To demonstrate the main ideas a cantilever beam is considered, consisting of finite number of parallel sub-beams. The external load...

The excellent operating properties of the mechanisms are conditioned by the quality design of the geometry of the individual components. Roller and ball bearings, which are frequently used components, have no exception and are an important part of them. One of the important parameters for a geometry...

The article deals with determination of tribological and basic properties of heat-treated bearing steel 100Cr6. It is typical steel for production a small and medium size of rolling bearings. For reducing the friction coefficient of functional surfaces of heat-treated bearing steel 100Cr6, the application...

This article describes mechanical differences in behaviour of groove squared profiles, which are made of carbon composite material. Specimens were made by winding of prepreg carbon fibre filament around Rexroth profile. Afterward was epoxy of first specimen cured in shape form and the epoxy of second...

A method of a dynamic analysis of a special kind of trailers with the central axle (axles) towed by truck is presented in the paper. Within the method, vibration and also strength calculations of frames and other components of the selected trailer can be carried out. Interface of MSC Adams software,...

The article deals with the proposed algorithm for calculating the frictional power loss generated by the influence of sliding in bodies during their rotation under contact stress. PTC/Creo Parametric CAD system was used for creation of parametric 3D virtual model of rolling bearings due to FEM analysis....

There exist a lot of engineering design methodologies, methods and/or tools implemented in guidelines and standards which help engineering designers to reduce constructional, safety, environmental, etc. risks of designed and/or existing technical products. However, their common feature is especially...

The article deals with numerical analysis for a study of the stress distribution and deformation of the component assembly during pressing within the assembly manufacturing process. The assembly design consists of a steel casing and a steel bottom and top lid. The fusion of the casing to the lids is...

This paper deals with theoretical analysis of experiments for measuring axial forces in bolts of a clamping sleeve. A dynamic force occurs in the bolts of the sleeve where the clamping sleeve transmits axial force. FEM analysis of the clamping sleeve proves that the axial force has a dynamic character,...

Additive manufacturing (AM) is a layered manufacturing technique. It can produce parts/printing layer by layer. When the deposition process involves a number of process parameters such as temperature gradients, build orientation, raster width, raster angle, layer thickness, and disposition pattern, etc....

Specific sliding is an essential factor in terms of surface wear of involute gears (involute gear teeth). At the same time, their values affect the heat generation in gearing. Since the values of the specific sliding reach its maximum at the gear tips and roots, the wear of these parts is the most significant,...

This paper describes an advanced design procedure used in the design of two test devices. The paper describes the use of advanced numerical modelling methods applying FEM. Emphasis is placed on the accurate determination of the natural frequencies and the natural shapes of the test equipment frames....

The standard ISO 6336 was released in 2006 and is a key standard for gearing loading capacity calculation. The first part of this standard is a basic one for a determination of very important factors (KA, KV, KHα, KHβ, KFα, KFβ). There are some new annex. Annex C is used to analyse crowning conditions...

With the development of high-speed rail, the requirements for control the motion of rail vehicle bogies are increasing. The chassis setting is responsible for the safety and comfort of the vehicle. The main problem is the conflict of the damping requirements for different driving modes. On one hand,...

This paper focuses on solving some of the problems arising in the design process groups in the automotive industry. The geometrical specification of machine parts in the automotive industry creates a number of problems, the solutions of which is not entirely trivial and even the current standards do...

The article presents a new subject in the bachelor’s study of the Faculty of Mechanical Engineering at university UWB, bringing to students with basic knowledge of construction a comprehensive view of the design task. Software support is mentioned here, enabling students to more easily...

The present contribution describes 3D printing of a part and related engineering design techniques which are used for virtual prototyping. Using these advanced techniques, one can cut the consumption of material in the production of machine parts by reducing the parts’ weight while respecting the applied...

The article deals with a modern form of teaching the subjects Measurement, diagnostics and testing of machines, Alternative drives, Engineering design III, IV, Innovation of technical systems, which are taught at the Department of Design and Machine Parts at the Faculty of Mechanical Engineering of the...

The standard ISO 6336 – Calculation of load capacity of spur and helical gears, got out in 2006. There were some amendments later, but a lot of errors and typos still remain. These can cause some misunderstandings during applications of the standard, and they are irritating for users of this standard....

This paper follows the results of measurements carried out on trucks of different types. The emphasis is on the load on the cardan shaft and the variation of this load with its length. The effect of the angle between the shafts on the magnitude of the load torques is also investigated. In addition, attention...

This article deals with the design of methodology for determining the behaviour of a gear on a needle bearing. The knowledge of behaviour of the gear on a needle bearing is important for the gear modification. The modification of the gear that is mounted on a needle bearing cannot be calculated only...

The article deals with assembly, measurement and evaluation of the gearboxes test bench with open flow of mechanical power. The article describes building a bench with tested gearboxes and its connection to a Ward-Leonard system. Subsequently, the procedure for connecting the bench to the electric network...

At present, the unevenness of the cardan shaft, more precisely the Hook joint, can be described mathematically. This formulation of the non-uniformity is based on the knowledge of the angular velocity of the drive and driven shaft. However, there is no real understanding of how the non-uniformity affects...