Diagnostics of machine parts by means of reverse engineering procedures

Abstract

In this article, an application of a three-dimensional scanner for building a special diagnostic stand is described. An experimental method of detection of material defects is discussed. The considered defects are connected with cooperation of particular surfaces of machine parts. In the discussed experiments, particularly the dimensions of pitting holes can be evaluated. Availability of laboratory facilities required that the investigations were performed using geared wheels. The three-dimensional model which represents a degenerated surface, obtained based upon the diagnostic measurements, was compared with the pattern of an undamaged surface. The latter was generated by means of our pre-processor. The pre-processor enables generation of files which are compatible with the majority of the computer-aided design system formats. Therefore, the analyses were performed by means of commercial system inventor and computer-aided three-dimensional interactive application.

Influence of Teeth Manufacturing Tolerances of Cylindrical Geared Wheels on GearOperating Characteristics Based on Spinner Stretching Apparatus

“…e gear elements, the gear wheels are the parts which are most frequently subjected e [4,10]. The damage could be of the following types: fatigue breakage or casual ( Fig.7a), scoring or wear ( Fig.…”

“…Among the gear elements, the gear wheels are the parts which are most frequently subjected to damage [4,10]. The damage could be of the following types: fatigue breakage or casual breakage ( Utilisation of better and better materials for elements of, for example, gear wheels, allows for the diminishing of the mass and size of the gear.…”

Design of Corrective Inserts for Patients with Feet Dysfunctions With Reverse Engineering Techniques

“…By definition, reverse engineering is used when: (i) the company that offered the product no longer exists, but there is still a demand for it, (ii) the company exists but does not offer the product, only a new version or a new design is offered but it does not meet the customer's expectations, (iii) there is a need to overhaul the technical means that have been put into operation and the CAD models / files are no longer available or in the case of prototype manufacturing, when the ready to use product set of dimensions differs from the original one related to technical documentation (the need to introduce changes to the product design at the stage of product assembly), (iv) a product design CAD models or technical documentation have never been available or have been lost for any reason (computer system failure or so), (v) quality control inspection, (vi) collecting data on masterpieces or museum exhibits, creating virtual tours or reproducing works, (vi) collecting data on spatial layout of objects, e.g. the layout of the production system layout, (vii) product customization to a client anthropometry, (vii) medicine in surgical planning, prosthetics, dental, instrumentation design [2,3,4,5,6,7,12]. In the classic design and construction process, the designer's idea is transformed into a product design, and then into a finished product subject to the This process begins as soon as the need arises and then is defined.…”

Implementation of AHP Methodology for the Evaluation and Selection Process of a Reverse Engineering Scanning System

“…These excel in their greater accuracy, but their measuring speed and ability to measure free-form products are low or insufficient [1,2]. For this purpose, it was proposed to use optical systems for scanning, and then to compare the data obtained from actual manufactured products with those data from 3D digital models that were used for production [3,4].…”