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通过研究粗加工和半精加工以及切削参数对宏观切屑尺寸的影响来分析55NiCrMoV7硬钢的面铣加工

Analysis of Face Milling of Hard Steel 55NiCrMoV7 by Studying Rough and Semi-Finished Machining and the Influence of Cutting Parameters on Macroscopic Chip Dimensions.

作者信息

Malea Claudiu Ionuţ, Niţu Eduard Laurenţiu, Iordache Daniela Monica, Tabacu Ştefan Lucian, Negrea Aurelian Denis, Bădulescu Claudiu

机构信息

Regional Research-Development Center for Innovative Materials, Processes, and Products for the Automobile Industry (CRC&D-Auto), National University of Science and Technology POLITEHNICA Bucharest, 060042 Bucharest, Romania.

Faculty of Mechanics and Technology, National University of Science and Technology POLITEHNICA Bucharest, 060042 Bucharest, Romania.

出版信息

Materials (Basel). 2024 Jul 11;17(14):3434. doi: 10.3390/ma17143434.

DOI:10.3390/ma17143434
PMID:39063729
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11278195/
Abstract

Hard milling is being increasingly used as an alternative to EDM due to its high productivity. The present paper presents the results of theoretical-experimental research on the face milling of hard steel 55NiCrMoV7. A comprehensive analysis of cutting temperatures and forces during single-tooth milling and a morphological examination of the resulting chips are conducted for roughing and semi-finishing operations. The temperature is analyzed in the chip formation area, and the detached chips and the cutting force are analyzed through their tangential, radial, and penetration components, depending on the contact angle of the cutter tooth with the workpiece. The analysis of chip morphology is carried out based on the dimensional and angular parameters of chip segmentation and their degree of segmentation. Based on the central composite design and the response surface method, it is shown that it is possible to mathematically model the dependence of the macroscopic dimensions of the detached chips on the cutting parameters. The determined process functions, the maximum chip curling diameter, and the maximum chip height allow for establishing the influence of the cutting parameters' values on the chips' macroscopic dimensions and, thus, guiding the cutting process in the desired direction.

摘要

由于硬铣削具有高生产率，它正越来越多地被用作电火花加工（EDM）的替代方法。本文介绍了对55NiCrMoV7硬钢进行面铣削的理论-实验研究结果。针对粗加工和半精加工操作，对单齿铣削过程中的切削温度和力进行了全面分析，并对所得切屑进行了形态学检查。在切屑形成区域分析温度，并根据刀具齿与工件的接触角，通过切向、径向和切入分量分析分离的切屑和切削力。基于切屑分段的尺寸和角度参数及其分段程度对切屑形态进行分析。基于中心复合设计和响应面法，结果表明，可以通过数学模型来描述分离切屑的宏观尺寸与切削参数之间的关系。所确定的过程函数、最大切屑卷曲直径和最大切屑高度有助于确定切削参数值对切屑宏观尺寸的影响，从而将切削过程导向期望的方向。

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