Study on Lapping Process of Diamond Cutting Tools

Molecular dynamics is a rapidly developing field of science and has become an established tool for studying the dynamic behavior of material machining. A three-dimensional molecular dynamics (MD) model about the atoms of the diamond cutting tools and the diamond grits is built by using the molecular dynamics. The Tersoff potential function is used to calculate the force and potential energy among the atoms of the diamond tools and the atoms of the diamond grits. The lapping processes at a special cutting depth are simulated. The variety of the specimen potential energy in the lapping process is observed. The mechanism of the diamond micro machining and the form of the surface formation are given by comparing the distribution maps of atoms in initial and cutting states. This study will give a strong support to the diamond cutting tools’ lapping.

show abstract

“…Initial Model. A model of a specimen of the diamond monocrystal and rigid diamond grit was built for the simulation [12], as shown in Fig. 1.…”

Section: Methodsmentioning

confidence: 99%

Lapping Process of Diamond Cutting Tool by Molecular Dynamics Simulating

Sun

Yan

et al. 2007

KEM

Self Cite

View full text Add to dashboard Cite

show abstract

“…Cutting tool selection plays a primary role in improving productivity and exibility of the manufacturing, which involves imprecise, vague, and uncertain information [1,2]. However, with the rapid development of metallurgical technology [3,4], more and more types of cutting tool materials have been widely used in the cutting eld [5][6][7]. In addition, due to the differences in coating types, tool geometers, cutting-edge treatment states, manufacturers, and other factors [8,9], users have to face orders of magnitude of tool information and make multi-dimensional and multi-criteria decisions when adapting tools.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive cutting tool adaptation method of multi-feature part based on evolutionary game

Huo,

Zhou,

Liu

et al. 2023

Preprint

View full text Add to dashboard Cite

The adaptation of cutting tools is the key link of machining, although a lot of work has been done to achieve tool selection for single features, relatively little research on tool scheme adaptation for multi-feature parts as a whole. In order to take into account the factors of matching, efficiency, cost, manufacturability, and environment, a comprehensive optimization method of a multi-feature tool scheme is proposed in this work. Firstly, the critical tool of a complex feature is defined, and a tool combination method with complex single features is proposed to generate an efficient tool strategy. Secondly, a tool scheme optimization model of multi-feature parts is constructed, where each machining feature is mapped to a game player in the model space, and the set of available tools is mapped to the player strategies. In addition, the classical evolutionary game algorithm is improved to adapt to the model, according to the large difference in the number and type of features of parts. Finally, a square test piece is taken as an example to verify the proposed method, and the results show that the method presented in the paper can efficiently obtain the customer-preferred tool scheme.

show abstract

“…Mechanical properties on different crystal planes and even in different orientations of the same plane are obviously different. This anisotropy is embodied in the nose arc of the rounded diamond cutting tools [2] . For example, the {100} crystal plane as the rake face of tool, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Mechanism and techniques of mechanical lapping of nature diamond cutting tools nose arc

Zong

Sun

et al. 2010

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

Rounded diamond cutting tools are used for ultraprecision cutting widely. The lapping qualities of the nose arc play a quite important role on the achieved accuracy of the machined surface. Therefore, it is urgent to solve the high-precision lapping problem of the nose arc. Firstly, based on the periodic bond chain (PBC) model, ratio model of material removal rate is proposed for tool nose arc, in which the {100} crystal plane is oriented as the rake face. And then, the optimal lapping direction is obtained for the nose arc of diamond cutting tools. More over, two lapping methods are proposed for tool nose arc according to the formula of material removal amount. The first is the lapping under variable pressure; the other is the lapping under variable time. After that, a new type lapping machine is designed by top-down method of Pro/Engineering. According to the requirements of the tools, a novel measuring method based on atomic force microscope (AFM) is put forward for nose roundness. A complete system is built for lapping of nature diamond cutting tools' nose arc.

show abstract

Study on Lapping Process of Diamond Cutting Tools

Cited by 4 publications

References 0 publications

Lapping Process of Diamond Cutting Tool by Molecular Dynamics Simulating

Lapping Process of Diamond Cutting Tool by Molecular Dynamics Simulating

A comprehensive cutting tool adaptation method of multi-feature part based on evolutionary game

Mechanism and techniques of mechanical lapping of nature diamond cutting tools nose arc

Contact Info

Product

Resources

About