Theoretical and experimental investigation into the formation mechanism of surface waviness in ultra-precision grinding

Yin, Tengfei; Du, Hanheng; Zhang, Guoqing; Hang, Wei; To, Suet

doi:10.1016/j.triboint.2023.108269

Cited by 13 publications

(7 citation statements)

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“…The grinding wheel spindle vibration will produce the same vibration to the center of the grinding wheel, and then the trajectory paths of grits during rotation of the grinding wheel change correspondingly. As a result, the vibration will be copied onto the workpiece, producing a wavy surface [16,46]. Similarly, wheel run-out can also produce ups and downs on the ground surface, and an analysis of the influence of the wheel run-out on the wavy surface formation can be found in [39,47].…”

Section: Theoretical Analysismentioning

confidence: 99%

“…Similarly, wheel run-out can also produce ups and downs on the ground surface, and an analysis of the influence of the wheel run-out on the wavy surface formation can be found in [39,47]. The trajectories of ununiform size and the distribution of grains on the grinding wheel surface may form a wavy surface and the corresponding analyses can be referred to in [16,46].…”

Section: Theoretical Analysismentioning

confidence: 99%

“…How to calculate the value of w v is not the focus of this study, but this can be found in [16,39,45]. It should be noted that the surface profile calculated using Equation ( 5) is just a simplified form, describing the primary characteristics of the profile.…”

Section: Theoretical Analysismentioning

confidence: 99%

“…Although some field-assisted technologies, such as laser [10][11][12] or ultrasonic vibration [13][14][15] assisted technologies, have been proposed to improve the cutting performance in terms of the diamond cutting of hard materials, additional assistive devices are required, increasing the machining cost. To date, grinding is still one of the best choices and the most frequently used methods for processing hard materials, due to its simplicity, high machining quality, and cost efficiency [16]. In grinding, the workpiece material is removed by the protruded grits distributed on the working surface of the grinding wheel, and many factors, including the grinding parameters [17,18], wheel geometry [19,20], grit size [21,22], lubrication [23,24], workpiece material properties [25], dressing condition [26], and vibrations [16,27], influence the surface generation processes, determining the final surface quality.…”

Section: Introductionmentioning

confidence: 99%

“…To date, grinding is still one of the best choices and the most frequently used methods for processing hard materials, due to its simplicity, high machining quality, and cost efficiency [16]. In grinding, the workpiece material is removed by the protruded grits distributed on the working surface of the grinding wheel, and many factors, including the grinding parameters [17,18], wheel geometry [19,20], grit size [21,22], lubrication [23,24], workpiece material properties [25], dressing condition [26], and vibrations [16,27], influence the surface generation processes, determining the final surface quality. In order to optimize the grinding process to obtain good surface quality, it is important to study the surface generation process in grinding.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Approach to Optimizing Grinding Parameters in the Parallel Grinding Process

Yin,

Zhang,

Hang

et al. 2024

Processes

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Hard materials have found extensive applications in the fields of electronics, optics, and semiconductors. Parallel grinding is a common method for fabricating high-quality surfaces on hard materials with high efficiency. However, the surface generation mechanism has not been fully understood, resulting in a lack of an optimization approach for parallel grinding. In this study, the surface profile formation processes were analyzed under different grinding conditions. Then, a novel method was proposed to improve surface finish in parallel grinding, and grinding experiments were carried out to validate the proposed approach. It was found that the denominator (b) of the simplest form of the rotational speed ratio of the grinding wheel to the workpiece has a great influence on surface generation. The surface finish can be optimized without sacrificing the machining efficiency by slightly adjusting the rotational speeds of the wheel or the workpiece to make the value of b close to the ratio (p) of the wheel contact width to the cross-feed distance per workpiece revolution. Overall, this study provides a novel approach for optimizing the parallel grinding process, which can be applied to industrial applications.

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