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      Experimental Investigation on Micro-Groove Manufacturing of Ti-6Al-4V Alloy by Using Ultrasonic Elliptical Vibration Assisted Cutting

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          Abstract

          The micro-groove structure on the planar surface has been widely used in the tribology field for improving the lubrication performance, thereby reducing the friction coefficient and wear. However, in the conventional cutting (CC) process, the high-quality, high-precision machining of the micro-groove on titanium alloy has always been a challenge, because considerable problems including poor surface integrity and a high level of the material swelling and springback remain unresolved. In this study, the ultrasonic elliptical vibration assisted cutting (UEVC) technology was employed, which aimed to minimize the level of the material swelling and springback and improve the machining quality. A series of comparative investigations on the surface defect, surface roughness, and material swelling and springback under the CC and UEVC processes were performed. The experimental results certified that the material swelling and springback significantly reduced and the surface integrity obviously improved in the UEVC process in comparison to that in the CC process. Furthermore, for all the predetermined depths of the cut, when the TSR (the ratio of the nominal cutting speed to the peak horizontal vibration speed) was equal to one of twenty four or one of forty eight, the accuracy of the machined micro-groove depth, width and the profile radius reached satisfactorily to 98%, and the roughness values were approximately 0.1 μm. The experimental results demonstrate that the UEVC technology is a feasible method for the high-quality and high-precision processing of the micro-groove on Ti-6Al-4V alloy.

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          Ecological trends in machining as a key factor in sustainable production – A review

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                Author and article information

                Journal
                Materials (Basel)
                Materials (Basel)
                materials
                Materials
                MDPI
                1996-1944
                21 September 2019
                October 2019
                : 12
                : 19
                : 3086
                Affiliations
                [1 ]Center for Precision Engineering, Harbin Institute of Technology, Harbin 150001, China; tanrongkai17@ 123456gmail.com (R.T.); zhaoxuesen@ 123456hit.edu.cn (X.Z.); lyhoo@ 123456hit.edu.cn (Z.H.)
                [2 ]School of Mechatronics Engineering, Heilongjiang University, Harbin 150080, China; zouxicong@ 123456hlju.edu.cn
                Author notes
                [* ]Correspondence: taosun@ 123456hit.edu.cn ; Tel.: +86-0451-8641-5244
                Author information
                https://orcid.org/0000-0003-0357-4504
                https://orcid.org/0000-0001-5893-017X
                Article
                materials-12-03086
                10.3390/ma12193086
                6804154
                31546672
                ea3a9a98-41df-49f4-b33a-613a5abe6839
                © 2019 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 01 September 2019
                : 20 September 2019
                Categories
                Article

                micro-groove,titanium alloy,surface integrity,material swelling and springback,ultrasonic elliptical vibration assisted cutting

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