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Electrotehnică (1154) |
SM ISO690:2012 HÂNCU, C., CARAUŞU, Constantin, PRUTEANU, O.. The influence of cutting speed va and processed material on circularity deviations at cylindrical surfaces broaching. In: Fizică şi tehnică: procese, modele, experimente, 2014, nr. 1, pp. 44-48. ISSN 1857-0437. |
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Fizică şi tehnică: procese, modele, experimente | ||||||
Numărul 1 / 2014 / ISSN 1857-0437 | ||||||
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CZU: 621.315.592 | ||||||
Pag. 44-48 | ||||||
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Rezumat | ||||||
Broaching is one of the cutting processes of inner surfaces profiled or deadlock, which provides a quality of processing, in terms of dimensional and shapes precision, surface roughness, etc., corresponding to finishing operations. This paper presents the influence of cutting speed on deviations from circularity in Broaching cylindrical surfaces. In terms of tools, the experiments developed in this research were used cylindrical brooches made from steel cutting Rp3 treated at (63÷65)HRC and steel body from 40Crl0 with (35÷40)HRC, with the diameter of teeth calibration Dc = (25.03-0.05)mm. For work, brooches were caught with a device type collet. Blank pieces of experimental evidence for achievement was made of three materials commonly used in machine manufacturing and were surveyed in the research on inner cylindrical surfaces rectification, namely: OLC45; 90VMoCrl 80; 40BCrl0. In terms of mathematical description of the influence of cutting speed, the deviations from circularity of parts processed by broaching were established functions depending dimensional form complex mathematical average of polynomial type of order 3 and order 6 in isolated cases of order 2 or 4 of roundness, Ac, of the inner cylindrical surfaces machined by broaching, within experimental investigations were within its overall (5-20)μm and between (5-14)μm for steel OLC45, from (7- 16)μm for 40BCrl0 and (6÷19)μm for 90VMoCrl80 material |
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Cuvinte-cheie broşare, viteză de aşchiere, precizie dimensională, Rugozitate, broaching, cutting speed, dimensional precision, roughness |
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