Impregnation of Micro- and Ultradispersed Diamond Powders with Copper-Based Alloys for Grinding Tool Manufacture

2021 ◽  
Author(s):  
V. P. Umansky
Keyword(s):  
Tool Manufacture ◽  
Ultradispersed Diamond ◽  
Grinding Tool ◽  
Diamond Powders

Iron oxide nanoparticles supported on ultradispersed diamond powders: Effect of the preparation procedure

2009 ◽  
Vol 255 (7) ◽  
pp. 4322-4328 ◽  
Author(s):  
Momtchil Dimitrov ◽  
Ljubomira Ivanova ◽  
Daniela Paneva ◽  
Tanya Tsoncheva ◽  
Stavry Stavrev ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Preparation Procedure ◽  
Oxide Nanoparticles ◽  
Ultradispersed Diamond ◽  
Diamond Powders

Study of ultradispersed diamond powders obtained using explosion energy

Carbon ◽  
1991 ◽  
Vol 29 (4-5) ◽  
pp. 665-668 ◽  
Author(s):  
V.L Kuznetsov ◽  
M.N Aleksandrov ◽  
I.V Zagoruiko ◽  
A.L Chuvilin ◽  
E.M Moroz ◽  
...  
Keyword(s):  
Explosion Energy ◽  
Ultradispersed Diamond ◽  
Diamond Powders

Ultradispersed diamond powders of detonation nature for polishing X-ray mirrors

1995 ◽  
Vol 359 (1-2) ◽  
pp. 155-156 ◽  
Author(s):  
N.I. Chkhalov ◽  
M.V. Fedorchenko ◽  
E.P. Kruglyakov ◽  
A.I. Volokhov ◽  
K.S. Baraboshkin ◽  
...  
Keyword(s):  
Ultradispersed Diamond ◽  
X Ray ◽  
Diamond Powders

KINEMATIC FEATURES OF THE LAPPING PROCESS AND DETERMINATION OF ITS BASIC PARAMETERS

2020 ◽  
Vol 7 (3) ◽  
pp. 23-28
Author(s):  
EZIZ SARVAN SHIRVAN ◽  
Keyword(s):  
Dynamic Properties ◽  
Cutting Speed ◽  
Equilibrium System ◽  
Technological Parameters ◽  
Kinematic Characteristics ◽  
Angular Velocities ◽  
Basic Parameters ◽  
Grinding Tool ◽  
Mathematical Relationships ◽  
Analytical Expressions

This paper discusses the kinematic characteristics of lapping process and the main parameters of the process. It was determined that the influencing degree of technological parameters to the forming surface and processes. It was projected the construction of the lapping head for processing of internal cylindrical surfaces, scheme of the lapping operation and graphic description of the forces influencing. The relationships between the axial, radial and tangential cutting forces and the effect of the combined force thereof are determined in order to ensure the necessary surface pressure. During the analysis geometric and mathematical relationships were obtained. The extracted analytical expressions can be realized by further experimental researches and can be used in engineering calculations of technological parameters of processing by lapping. Angular velocity, friction force, linear velocity, also the length of the tactile curve and the radius of the part can be considered the main kinematic and dynamic parameters of the process that the formation of the surface, also the course of the process depends on these parameters. Depending on the kinematic parameters, the wear nature of the tool changes and this changes the linear and angular velocities, which have a significant impact on the accuracy, quality and productivity of processing. When examining the technological capabilities of the process, the nature of the movement between the part and the grinding tool, also changes in cutting speed are often considered as a main factor. Analytical expressions were obtained to determine the main parameters of the process, taking into account the kinematic characteristics of the friction process. These expressions can be used in engineering calculations and allow to determine the optimal values of the processing mode. In order to obtain the required micrometric surface cleanliness and measurement accuracy, correlation relationships were established between the main parameters of the process, equations of the equilibrium system of shear forces were compiled and analytical expressions were obtained based on the analysis of kinematic and dynamic properties of the system.

scholarly journals Potentials of Vitrified and Elastic Bonded Fine Grinding Worms in Continuous Generating Gear Grinding

2021 ◽  
Vol 5 (1) ◽  
pp. 4
Author(s):  
Maximilian Schrank ◽  
Jens Brimmers ◽  
Thomas Bergs
Keyword(s):  
High Performance ◽  
Manufacturing Processes ◽  
Fine Grinding ◽  
Gear Grinding ◽  
Profile Line ◽  
Grinding Tool ◽  
Process Behavior ◽  
Hard Finishing ◽  
Tooth Flank ◽  
Process Strategy

Continuous generating gear grinding with vitrified grinding worms is an established process for the hard finishing of gears for high-performance transmissions. Due to the increasing requirements for gears in terms of power density, the required surface roughness is continuously decreasing. In order to meet the required tooth flank roughness, common manufacturing processes are polish grinding with elastic bonded grinding tools and fine grinding with vitrified grinding tools. The process behavior and potential of the different bonds for producing super fine surfaces in generating gear grinding have not been sufficiently scientifically investigated yet. Therefore, the objective of this report is to evaluate these potentials. Part of the investigations are the generating gear grinding process with elastic bonded, as well as vitrified grinding worms with comparable grit sizes. The potential of the different tool specifications is empirically investigated independent of the grain size, focusing on the influence of the bond. One result of the investigations was that the tooth flank roughness could be reduced to nearly the same values with the polish and the fine grinding tool. Furthermore, a dependence of the roughness on the selected grinding parameters could not be determined. However, it was found out that the profile line after polish grinding is significantly dependent on the process strategy used.

Videooptical Surface Shape and Integrity Estimation in Robots Machining

2013 ◽  
Vol 332 ◽  
pp. 270-275 ◽  
Author(s):  
Tadeusz Mikolajczyk
Keyword(s):  
Surface Roughness ◽  
Industrial Robot ◽  
Surface Shape ◽  
Engineering System ◽  
Machined Surface ◽  
Reflectivity Method ◽  
Machining System ◽  
Grinding Tool ◽  
Smart Machining ◽  
Usb Camera

Paper shows system to surface shape and quality control in machining using industrial robot. To surface control videooptical methods were used. Surface shape was controlled using the special reverse engineering system. To surface roughness measure machined surface reflectivity method was used. Used own constructions non contact system was equipped with red laser light and USB camera. Wrist of robot was equipped with grinding tool. In paper shows some algorithms of presented processes. Shown too examples of experiments results in surface roughness measure in start end of grinding process. First trials of presented system shows possibility to build smart machining system for finishing of surface with unknown shape.

A Discussion on Removal Mechanisms in Grinding Polycrystalline Diamond

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Florestan Schindler ◽  
Richard Brocker ◽  
Fritz Klocke ◽  
Patrick Mattfeld
Keyword(s):  
Material Removal ◽  
Polycrystalline Diamond ◽  
Material Removal Mechanism ◽  
Mesoscopic Scale ◽  
Tool Manufacture ◽  
Brittle Behavior ◽  
Process Characteristics ◽  
Chemical Effects ◽  
Removal Mechanisms ◽  
First Time

Polycrystalline diamond (PCD) grinding takes an important role in the field of tool manufacture. Regardless, there is still lack of process knowledge about the occurring material removal mechanisms in PCD grinding. In order to get a better understanding of the process characteristics, the surface integrity zone of PCD inserts has been analyzed in detail after grinding for the first time. The drawn conclusion questions solely ductile or brittle behavior as removal mechanisms. Both thermal and mechanical process loads during the grinding process lead to thermophysical and chemical effects on a micro- and mesoscopic-scale and might thus have a significant impact on the material removal mechanism.

GrindBall: an advanced micro-grinding tool

2013 ◽  
Vol 7 (5) ◽  
pp. 469-476 ◽  
Author(s):  
E. Brinksmeier ◽  
B. Orlik ◽  
R. Groll ◽  
C. Brandao ◽  
A. Norbach ◽  
...  
Keyword(s):  
Grinding Tool
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