Abstract
The geometrical accuracy of the machined surface can generally be understood mainly as accuracy of shape, orientation, position and run-out. As a general rule; it is quantified by the corresponding deviations from the nominal area. The size of the geometric deviation from the nominal area may in practice affect the conventionally measured value of the dimension, even if the required dimensional tolerance is adhered to. Since electro–erosive machining technology belongs to very precise finishing technologies; even the small geometrical accuracy deviation has a negative impact on the resulting quality of machined surfaces. The aim of the experiments was to contribute to the knowledge database, which defines the influence of the process parameters at electrical discharge machining with the CuZn37 tool electrode on errors of geometrical accuracy of the machined surface. On the basis of the results of the experimental measurements, graphical dependencies were determined which predict geometrical accuracy of the machined surface in terms of the maximum deviation of flatness after electrical discharge machining of tool steel EN X30WCrV9-3 (W.-Nr. 1.2581) with CuZn37 wire electrode of 0.20 mm diameter to determine the appropriate combination of process parameters.
Highlights
Checking of machined surface geometrical deviations is, in general, a relatively complicated process that requires adherence to the relevant technical standards and definitions for deviation measurements
It was found that the characteristic curvature of the machined surface after WEDM is mainly related to the vibration amplitude of the CuZn37 wire electrode with 0.20 mm diameter
The vibration of the wire electrode can be modified by a targeted selection of MTP settings and process parameters settings
Summary
Checking of machined surface geometrical deviations is, in general, a relatively complicated process that requires adherence to the relevant technical standards and definitions for deviation measurements. Since the deviations of the machined surface predominantly have the character of continuous random variables, their values can be examined for quantification of the accuracy of the machined surface on the basis of evaluation of a certain range of the test set. The number of required test samples is generally chosen with consideration of the expected course and trends of the evaluated deviation, and the character of the machining process. The range of geometric deviations of the machined surface depends, to a large extent, on the applied machining technology. Because WEDM is one of the finishing progressive technologies with a high degree of machined surface quality, even a small geometrical deviation from
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
