{'fraction_non_alphanumeric': 0.020364415862808145, 'fraction_numerical': 0.015005359056806002, 'mean_word_length': 4.8742138364779874, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
EFFECT OF ECCENTRICITY ON SURFACE TOPOGRAPHY OBTAINED IN BALL-END MILLING PROCESSES

In the present work, in order to simulate surface topography in ball-end milling processes a numerical program was used. Input data of the program are cutting conditions such as feed or radial depth of cut, as well as geometric characteristics of the tool, like tool diameter, number of teeth and helix angle among other. The program allows calculating different 2D and 3D parameters, as well as volume of peaks and valleys at a certain height. This will influence the polishing operations that are usually applied after milling in the manufacturing process of injection molds. In order to study how surface topography and areal roughness parameters Sa and St change as a function of eccentricity, three different eccentricity values were considered: 0.001 mm, 0.010 mm and 0.100 mm. Simulated results were validated by means of experimental tests.