Steps of generative design in integrated CAD systems

Due to the continuous development of various areas of the industry, such as modern production equipment, material technology, computer and software development, it is possible to expand the range of conventional production technologies. These include additive manufacturing technology, which provides a new opportunity to produce everyday products, thereby satisfying market needs. Integrated CAD systems have occupied a place in the product design and development process for decades, which has partially reformed classical design methods and its steps.

Case study: design of a vacuum gripper

In this paper we present the design process of a vacuum gripper based on an existing design, which have to be modified. During the design process each step was analysed by finite element methods, to see that the change in the model was made into the right direction. During these steps an appropriate solution was selected to be used later. In the paper we present the base design and the results of its analysis. Later we discuss the modifications made on the model and the final result of simulations of the modified geometries.

Designing a filament recycling extruder

In this paper we can read about designing and building a filament recycling machine especially designed for 3D printers. 3D printing is quite popular nowadays, but unfortunately the base material of this technique is polymer, which is not an environmentally friendly material, but it can be recycled in most of the cases. The filament pieces are shredded beforehand with a shredding machine to get the appropriate size. After being chopped up and heated up to the given temperature, according to the materials specific parameters the filament can be melted down and extruded again. The study deals with designing a recycling machine as mentioned.

Prototype for fit investigation

Nowadays, additive manufacturing is a powerful tool and promising technology both for manufacturing and educational purposes. This work aims to present a case study of using 3 dimensional (3D) printing technology for fit investigations. It describes the creation of a physical model (prototype) by using the Fused Deposition Modeling (FDM) method. The prototype of two plates was made to perform an inspection how the prototype fits with other components.

The effect of the contact zone of cylindrical helical gears on the meshing and some considerations for determining its shape

The study deals with the meshing characteristics of cylindrical helical external gear pairs. The gear pairs, following the nowaday’s strength and quality requirements are becoming ever smaller. Accuracy in the background also attracts the importance of vibration and noise reduction. The inclined tooth meshing, in contrast to the straight tooth, due to the specificity of its zone of contact, is the subject of this study. This is of special importance because the meshing stiffness varies for one to more teeth pairs, the meshing contact lines are of continuously varying length during meshing, and as a consequence load sharing and distribution is changing with. This paper deals with the zone of contact and its geometric modification in order to light on a new type of vibrational excitation.

Application of topological methods

The following article briefly summarizes the design aids currently in use, such as topology optimization and generative design, which are common in integrated CAD systems. The results provided by these methods are presented and compared based on a case study.

Additive metal printing machine tool

The 3D printing, as a modern manufacturing method, is becoming more widespread and overrides the usual industry conventions. While it was mainly known in the production of plastic parts, nowadays metal-based versions are also becoming more widespread. Reputable machine tool manufacturers such as DMG Mori or GE compete with each other to create equipment for this technology for the industry, where there is a growing market for such machines. My article seeks to answer the question of where these tools have a place in the industry, whether they can be considered as machine tools, and decide that the procedures describing the construction of machine tools could be applied to them.

Mechanical analysis of an auxiliary table with composite structure

This paper gives a brief summary on the application on of finite element methods during the design of a component. The solutions of mechanical and thermal problems are demonstrated on the given component. Among the several numerical methods the paper focuses on the FEM. During the article we present the problems, then define mechanical simulations for the possible solution that was designed and the evaluation of the results.

Demand for recycling filament in 3D printing

In the study the brief history of 3D printing is written, how the recent past and present is changing the open source movement. The FDM extrusion technology is reviewed in the text, also the areas where the technology can be used. There is a detailed description about the Creality Ender 5 printer and its printed objects. The study’s next main part contains the conceptual design of a filament recycling machine. After the needed market and patent research the functions are established, concepts of the machine are determined. These were evaluated and an optimal sketch was chosen as a result.

Dynamical simulation of a CNC turning centre

This paper deals with the analysis of a CNC turning centre, more specifically the spindle system. The FEM analysis shows the natural frequencies of the spindle system and the same system was analysed by using the TMM and the influence coefficients method. These analyses pave the way to compare these three methods.