Abstract
This research study focuses on the experimental analysis of the three-dimensional (3D) surface topography and surface roughness of the workpiece machined with ultrasonic vibration assisted turning (UAT) in comparison to conventional turning (CT). For the challenge that machining difficulties of 304 austenitic stainless steel (ASS 304) and high demands for the machined surface quality and machining precision represent, starting with cutting principle and processing technology, the ultrasonic vibration method is employed to scheme out a machining system of ultrasonic vibration assisted turning (MS-UAT). The experiments for turning the workpiece of ASS 304 are conducted with and without ultrasonic vibration using the designed MS-UAT, and then the 3D morphology evaluation parametersSaandSqare applied to characterize and analyse the machined surface. The experimental results obtained demonstrate that the process parameters in UAT of ASS 304 have obvious effect on the 3D surface topography and surface roughness of machined workpiece, and the appropriate choice of various process parameters, including ultrasonic amplitude, feed rate, depth of cut, and cutting speed, can enhance the machined surface quality efficiently to make the machining effect of UAT much better than that of CT.
Highlights
In recent decades, there is an increasing demand for the surface quality and machining precision of highly sophisticated products and precision components on the machinery industry [1]
The surface topography and surface roughness are the significant indicators in the process of measuring the machined surface quality
The MiCROMEASUR2 type 3D surface profiler manufactured by France STIL Company, which can conduct noncontact measurement on the machined surface and have 40000 data scanned and sampled evenly in each measurement with the accuracy rate ±0.01 μm, is adopted to measure the 3D surface topography and surface roughness of machined workpiece
Summary
There is an increasing demand for the surface quality and machining precision of highly sophisticated products and precision components on the machinery industry [1]. In view of the above, higher requirements are raised for the machining technology, since the conventional machining technology has been difficult to meet the requirements of the processing [2,3,4,5]. Considering the productivity, metal removal amount, and machining quality, turning process is still an extensively used method of machining [6,7,8], as well as an economic and practical way of machining. UAT has been proposed in such conditions, and the research on UAT has been carried out
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