Research on machining topography of point grinding based on correlation function method

Shi, Xiaoliang; Xiu, Shichao; Zhu, Meng; Xing, Chunsheng

doi:10.1177/0954405418755827

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…They move together between the grinding wheel and the workpiece during grinding process. 23,24 This type of ground scratch can be controlled by selecting the grinding wheel with proper characteristics and cleaning the surface of grinding wheel. Another kind of scratch is shown in Figure 16(b).…”

Section: Surface Scratchmentioning

confidence: 99%

A research on the mechanism and model of surface micro-damage in grinding hardening

Shi

Zhang

Xiu

2021

Advances in Mechanical Engineering

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Grinding hardening can obtain hardening effect besides fine machining effect on the surface of workpiece. A certain degree of surface micro-damage will be formed during grinding hardening process which mainly contains micro-crack, melting coating, decarburization, and surface scratch. In order to study the micro-damage of grinding hardening, the paper carries on a grinding hardening experiment and the characteristics of micro-damage are observed. The generation mechanism of micro-crack is revealed. It is formed by the accumulation of dislocation pile-up in the condition of grinding hardening process. When the grinding depth reaches a certain value, the surface micro-crack will be produced obviously and become more serious with the increasing of grinding depth. Other micro-damage containing surface melting coating, decarburization, and surface scratch are also studied and their relevance with micro-crack is revealed. Based on the grinding hardening theory and pile-up dislocation theory, a model for micro-crack of grinding hardening is established. The calculating result of the model accords with the experimental result in general.

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Section: Surface Scratchmentioning

confidence: 99%

A research on the mechanism and model of surface micro-damage in grinding hardening

Shi

Zhang

Xiu

2021

Advances in Mechanical Engineering

Self Cite

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“…For example, amplitude distribution function is commonly used to describe the probability distribution of surface micro height and characterize the geometrical features, 21,22 while bearing area curve as a statistical function has a superior performance in assessing the wear resistance, load bearing, and lubricant or oil retention capacity of the machined surface. 23,24 Shi et al 25 revealed the inner characteristics of surface topography obtained by point grinding based on self-correlation and mutual correlation function. Furthermore, 3D amplitude and functional parameters belong to time-dominant quantification parameters, which cannot explain the dynamic frequency information of the machined surface.…”

Section: Introductionmentioning

confidence: 99%

Characterization and functional evaluation of surface texture of micro eccentric shaft based on multi-index

Cheng

Pei

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Micro eccentric shaft has important application in many high-tech fields because of its small specific gravity, material, and energy saving. The machined surface texture has an indispensable influence on the surface integrity and the final functional capability. However, due to the micro scale and weak rigidity, it is difficult to characterize the surface texture and evaluate the functionality by traditional quantitative parameters. In order to comprehensively realize the surface texture characterization and functional analysis, a mathematical model is established to simulate the surface texture machined with different cutting tools. Then the surface microscopic profile and functional performance of the surface texture are analyzed by amplitude distribution function (ADF) and bearing area curve (BAC), and the surface texture is also evaluated by fractal dimension, which can avoid the negative effects of scale and resolution. Furthermore, power spectrum density (PSD) is utilized to analyze the relationship between the process dynamic state and geometrical specification of the surface texture. The validity of experimental results shown that the microscopic height distribution of surface machined by flat end milling cutter tends to be more random and there are more microscopic geometric features than that of the ball end milling cutter. The machined surface obtained by the flat end milling cutter has better load bearing, wear resistance, and liquid retention capability.

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“…The consistency of crank journal outer circle accuracy has an important impact on the stable operation performance of crankshaft [1,2]. Grinding factors such as the dynamic unbalance, the rotation accuracy and the clamping error directly affect the accuracy consistency [3,4]. How to maximize the accuracy consistency of the outer circle of the crank journal is the key to the high motion accuracy and good interchangeability of the crankshaft.…”

Section: Introductionmentioning

confidence: 99%

Research On Roundness Error Consistency Model For Crank Journal Cylindrical grinding

Zeng

Wanli

Hong-yan³

et al. 2021

Preprint

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Cylindrical grinding is an important way to form the external shape error of the crank journal, and the accuracy consistency directly affects the interchangeability of products. To study the accuracy consistency of crank journal，a dynamic model of the grinding wheel-crankshaft grinding system based on Timoshenko beam is established, and the grinding transition process simulation algorithm with iterative convergence of grinding force-transient grinding amount cycle adapted to the model is proposed, which realizes the simulation of the roundness of the crank journal coupled with the process parameters of the grinding system. Aiming at the grinding position of each crank journal, the grinding roundness of five crank journals is simulated respectively. On this basis, the crank journal roundness consistency prediction model is established, and the effectiveness of the prediction model is verified by field experiments. Finally, the influence of grinding parameters on the consistency of the roundness of crank journal is studied. The research conclusion can provide a reference for the grinding accuracy consistency design of this type of crank journal.

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Research on machining topography of point grinding based on correlation function method

Cited by 5 publications

References 25 publications

A research on the mechanism and model of surface micro-damage in grinding hardening

A research on the mechanism and model of surface micro-damage in grinding hardening

Characterization and functional evaluation of surface texture of micro eccentric shaft based on multi-index

Research On Roundness Error Consistency Model For Crank Journal Cylindrical grinding

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