The paper deals with investigation into manufacturing circular scales and its accuracy evaluation methods and means considering the new development of production and measurement methods based on advancing laser instruments. The article describes the results of recently conducted analysis and presents initial trials of applying them in practice. Santrauka Supažindinama su apskritiminių skalių tyrimais, gamybos ypatumais ir matavimo būdais. Įvertinamas naujų gamybos ir matavimo metodų plėtotės lazerinių prietaisų pagrindu lygis. Pristatomi kai kurie pastarųjų metų darbai ir pradiniai jų taikymo bandymai. Резюме Статья посвящена исследованию методов и средств производствa круговыx шкал и оценке методов иx точности с учетом новых развитий производства и измерений, основанныx на разработкax лазерныx инструментов. Представлены некоторые последние разработки и первичные испытания по их применению.

Production of high precision circular scales is a complicated process requiring expensive equipment and complex processes to achieve. Precision angle measurement equipment tends to be very expensive and therefore not accessible to all in need. Simplification of production of such devices can lead to reducing costs of angle measurement systems ensuring easier accessibility. A new method of producing precision circular scales using low cost mass production can reduce the costs of these devices drastically. Therefore, utilising a common CD technology as the basis for such scales is analysed. This paper deals with the analysis of the newest laser cutting method for plastic circular scales. Preliminary results of manufacturing such scales are presented in the paper as well as measurements of the grating of the scale were performed. The quality of different scales manufactured using different laser types is analysed in the study. The cost – effective alternative of manufacturing circular scales is discussed in the paper.

This presentation deals with a new application of mechatronic means for angle measuring system; it can be applied in precision instrumentation and measurement equipment. Precise angle measuring is based on usage of angle measurement standards such as polygons, precision indexing tables and circular scales. Ring lasers and precision rotary encoders can also be used for this purpose as well as test benches created for angle calibration. Many angular and linear measurement transducers or encoders are used in industry and machine engineering for the position and displacement measurement. The accuracy of angular position fixed by means of these devices reach approximately 0.3" 0.1" (arc second). Control of their accuracy parameters is complicated task consisting from some high requirements needed for rotation, positioning, signal processing, object adjustment and data processing.