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Towards High Productivity in Precision Grinding

2018.4.12  Applications in modern grinding technology range from high-precision kinematics for grinding very large lenses and reflectors through to medium size grinding

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Evaluation of grinding characteristics for sapphire ultra-precision ...

2023.3.24  This study is beneficial to reveal the material removal and damage mechanism of sapphire ultra-precision grinding, and to optimize the ductile and low

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Prediction and measurement for grinding force in wafer self

2023.11.15  To evaluate the performance of grinding force measurement system in the actual grinding process, a cutting test is conducted on the developed ultra-precision

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Study on the Surface Generation Mechanism

2023.4.9  In this study, a new theoretical model for surface generation in ultra-precision parallel grinding has been established by considering the arc-shaped effect, synchronous vibration of the wheel, and cutting profile

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Leading innovators in precision milling for the mining industry

2023.11.14  Precision milling is a key innovation area in mining. Precision milling refers to the process of using specialized milling equipment and techniques to finely and

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Dynamic force modeling and mechanics analysis of precision grinding ...

2023.5.1  Structural tools can control the chip flow path to improve grinding stability, so a uniform force could be obtained. Although the macrostructure can significantly

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Precision grinding of silicon nitride ceramic with laser macro ...

2018.8.23  To enhance the processing precision of silicon nitride ceramic grinding, in this work a laser macro-structured method using pulsed laser is proposed and applied to

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Nanomaterials Free Full-Text Using a Novel

2022.8.12  This work concentrated on the improvement of the surface roughness of a magnetic head, through the use of an ultrafine nanodiamond slurry, and a novel floating grinding process, which optimize different

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Dynamic force modeling and mechanics analysis of precision grinding ...

2023.5.1  Section snippets Multiple random topography modeling of the grinding wheel. Taking a V-shaped electroplating CBN wheel as an example, the wheel radius is R, the wheel width is b, and the wheel section angle is φ.In order to study the influence mechanism of the randomness of the abrasive grains (including grain shape, size,

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Machines Special Issue : High Precision Abrasive Machining

2023.1.31  Dear Colleagues, High-precision abrasive machining is an essential process for high-value manufacturing. It involves machines, processes and systems often reflected in high-performance grinding and/or abrasive machines, a complex abrasive cutting process, super-hard grinding wheels or ultra-thin abrasive blades, automated high

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Materials Free Full-Text Parameters Optimization of Laser-Grinding ...

2023.6.30  Aiming at problems such as poor precision of laser processing C/SiC composites, low efficiency of grinding C/SiC composites, and serious wear of grinding wheel, a method of laser-grinding chain processing C/SiC composite groove was proposed in this paper. The method combined the high efficiency characteristic of laser ablating and the

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Investigation of Surface Integrity Induced by Ultra-Precision Grinding ...

2023.12.14  Glassy carbon provides material characteristics that make it a promising candidate for use as a mould material in precision glass moulding. However, to effectively utilize glassy carbon, a thorough investigation into the machining of high-precision optical surfaces is necessary, which has not been thoroughly investigated. This research

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Evaluation of grinding characteristics for sapphire ultra-precision ...

2023.3.24  This paper focused on the grinding characteristics for sapphire ultra-precision grinding with small grit size grinding wheels and acoustic emission signal monitoring of material removal mechanism under the action of multiple abrasive grain.The results show that the use of small grit size grinding wheels allowed for effective removal

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Coatings Free Full-Text Recent Progress in Precision Machining

2020.7.25  Precision finishing of difficult-to-grind materials such as high alloy steels and tungsten carbide has been an ever-increasing trend in manufacturing which has led to the development of super abrasives and precision-controlled machines with multi-axes systems making it possible to process parts with complex geometries [12,81]. Both

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Micromachines Free Full-Text Analysis of Current Situation

2022.8.25  Although grinding is essential in the production of castings, the casting grinding process in manufacturing is complicated and there are many difficulties, such as the large amount of noise in the grinding environment, non-structural casting entities, and the inclination in the overall shape–time variation. Even in the face of complex technology

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Process Monitoring in Grinding - ScienceDirect

2002.1.1  process monitoring. Process Monitoring in Grinding H. K. Tonshoff, T. Friemuth, J. C. Becker Institute of Production Engineering and Machine Tools, University of Hannover, Germany Abstract The grinding process is characterised by a high number of cutting edges undergoing non-uniform wear, this also typifies a highly non-stationary

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Design and Development of a High-Speed Precision Internal Grinding ...

2022.12.27  In order to meet the P2-grade bearing grinding requirements, we designed a high-speed internal grinding machine to be used for grinding bearing raceways and inner circles. The machine has a T-type layout and a four-axis numerical control linkage. It is supported by hydrostatic pressure and driven directly by a torque motor. In addition,

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Potentials of grinding process simulations for the analysis of ...

Grinding processes are very complex due to the multitude of influencing parameters, resulting from the stochastic tool topography with numerous geometrically undefined abrasive cutting edges. Thus, the efficient design and optimization of these processes is a challenging task. Process simulations can be used as a flexible tool for analyzing

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Surface generation and materials removal mechanism in ultra-precision ...

2021.12.1  Diamond turning, fly-cutting, and milling are the primary manufacturing technologies for generating free-form surfaces; however, they are not sufficiently effective in machining free-form optics on hard and brittle materials.Ultra-precision grinding has been demonstrated to have an outstanding capability in machining difficult-to-cut materials. .

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The material removal and surface generation mechanism in

2022.5.15  The ultra-precision grinding technology based on the workpiece self-rotational principle has been extensively employed to obtain a high surface accuracy and material removal rate during the wafer thinning process. However, no estimation methods and prediction models are currently available for the surface topography of ground

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A “Double Accuracy Theory” and Experimental Research on Precision Grinding

2019.12.22  The challenge of precision grinding lies in the difficulty in ensuring the various dimensions and geometric accuracy of the final machined parts. This paper mainly uses the theory of a multi-body system to propose a “double accuracy” theory of manufacturing and measurement. Firstly, the grinding theory with an accuracy of 0.1 μm

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Ultra-precision grinding of optical glasses using mono-layer

2015.1.1  After finishing the precision conditioning of mono-layer nickel electroplated coarse-grained diamond wheels with 151 μm (D151), 91 μm (D91) and 46 μm (D46) grain size, resp., profile and surface grinding experiments were carried out on a five-axis ultra-precision grinding machine with BK7, SF6 optical glasses and Zerodur glass ceramic.A

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An investigation of monitoring the damage mechanism in ultra-precision ...

2022.9.1  1. Introduction. In the past decades, with the rapid development of high-end optics, aerospace, and consumer electronics, ultra-precision grinding has been widely used in the production of hard and brittle material optics with high finish, excellent profile accuracy, and perfect surface integrity, and has become one of the most important

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Precision grinding of a microstructured surface on hard and

2018.5.1  The precision micro-tip truing and micro-grinding technology is proposed to process controllable microarray structures on the surfaces of ceramics and ceramic-matrix composites in this paper. It involves the mechanical truing of a metal-bonded diamond grinding wheel along V-shaped cross interpolation trajectories for creating sharp cutting

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Optimization of grinding process for hard and brittle

Grinding damage of hard and brittle materials has a direct impact on part strength and subsequent polishing efficiency. Damage suppression is one of the key research issues in hard and brittle material processing. Due to the uncertain damage evolution law, there is still a lack of optimization methods for the multi-step grinding process under given damage

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Precision grinding of optical glass with laser micro

2014.5.1  Precision grinding form fine grinding stripes with the micro-cutting effect of the abrasive micro-edges and obtain a high-precision and low-roughness machined surface. Due to the extremely high hardness and wear resistance, it is challenging for diamond abrasive grains to produce micro-cutting edges on the surface through grinding wheel

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Precision Grinding: All Need To Know in Grinding

2022.10.21  Expert machinists use precision grinding processes when other machining methods or techniques like milling and turning cannot be used. This usually occurs due to the following: Type of material；. The

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机械工程学报-., 第卷, 第期

2021.10.8  关键词: 超声振动辅助磨削, 超声装置, 材料去除机制, 表面形成机制 Abstract: Ultrasonic vibration-assisted grinding (UVAG) technology, by superposing high-frequency and micro-amplitude ultrasonic vibration on the conventional grinding operation, has significant advantages and broad application prospects in the high-efficiency and

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Investigation of Hydrodynamic Pressure in High-speed Precision Grinding ...

2011.1.1  The goal of this project is to model the hydrodynamic fluid pressure during high-speed precision grinding both theoretically and experimentally so as to find the quantitative relationship between the hydrodynamic pressure and grinding conditions. 2811C.H. Li et al. / Procedia Engineering 15 (2011) 2809 – 2813 . . iˈet al / Procedia ...

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Precision Machining by Dicing Blades: A Systematic Review

2023.1.14  Diamond dicing blades are profound cutting tools that find their applications in semiconductor back-end packaging and assembly processes. To fully appreciate the benefits of the dicing blade technique for precision machining, a deeper understanding is required. This paper systematically reviews the contribution of dicing

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Frontiers Roughness Prediction and Performance Analysis

2022.5.13  The method based on data-driven patterns has a better idea for mining the implicit mapping relationship and eliminating the uncertainty of complex problems. This study presents a data-driven roughness prediction method for GH4169 superalloy. First, a superalloy grinding platform is built.

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On-machine precision truing of ultrathin arc-shaped

2022.1.1  Precision truing and grinding experiments were performed on an ultra-precision grinding machine (Moore Nanotech 350 FG). The basic experimental configuration is presented in Fig. 8. A diamond grinding wheel with a roughly shaped arc profile was mounted on a high-speed grinding spindle, which moved in the Z-axis direction. A GC

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Improvement of precision grinding performance of CVD

2018.10.1  Chemical vapor deposition (CVD) diamond grinding wheels are used in precision and ultra-precision grinding owing to the high grain density, uniform dispersion of abrasives, and excellent wear resistance. However, the small chip space on the CVD diamond abrasive surface easily interrupts the grinding, which limits the practical

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Theoretical and experimental investigation into the

2023.2.1  Grinding experiments with resin-bonded diamond wheels were conducted on an ultra-precision grinding machine (Nanotech 450 UPL) which consists of two linear slides (X- and Z-axes) and a rotary table (B-axis), as illustrated in Fig. 2.An aerostatic bearing wheel spindle is mounted on the B-axis and its specifications are listed in Table

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Development of a precision grinding machine system for

2018.6.29  In this paper, a three-axis computer numerical control (CNC) grinding machine tool is designed for the grinding of micro V-grooves array on hard and brittle materials. Material removal and machining strategy are studied for the grinding of V-grooves array. A machining strategy design (MSD) system is established to generate NC

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Materials Free Full-Text Optimization of the SAG Grinding

2023.4.19  Considering the continuous increase in production costs and resource optimization, more than a strategic objective has become imperative in the copper mining industry. In the search to improve the efficiency in the use of resources, the present work develops models of a semi-autogenous grinding (SAG) mill using statistical analysis and

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