Methodology for designing technological complexes. Part 3. Tool design

2020 ◽  
pp. 21-23
Author(s):  
S.A. Rusanovskiy ◽  
M.P. Hudyakov
Keyword(s):  
Mathematical Model ◽  
Cutting Force ◽  
Tool Design ◽  
Tool Development ◽  
Model Design ◽  
Design Version ◽  
Technological Complex ◽  
Development Unit

According to the developed methodology for the design of non-stationary technological complexes, the decomposition of the tool development unit (with a design version) for the pile processing of grooves for welding in the hull structures of an underwater vessel is performed. Keywords non-stationary technological complex, cutting, welding, mathematical model, design, cutting force, tool. [email protected], [email protected]

Study on Numerical Simulation and Experimental of Cutting Force in Turning Machinable Glasses Ceramics

2013 ◽  
Vol 797 ◽  
pp. 229-233 ◽  
Author(s):  
Lian Jie Ma ◽  
Xiao Jiang Zhang ◽  
Ya Dong Gong
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Cutting Force ◽  
Orthogonal Experiment ◽  
Glass Ceramics ◽  
Least Square ◽  
Test Results ◽  
System Vibration ◽  
Cyclic Fluctuation ◽  
Changing Process

Through turning experiment of machinable glass ceramics, the characteristics and law of turning force was studied. Results indicated that the overall changing process of cutting force was sinusoidal. If the cyclic fluctuation caused by system vibration was neglected, the changing process of turning force was scalariform. Through designing orthogonal experiment and applying numerical simulation of multiple regressing theory based on least square algorithm, mathematical model of turning force was established related with process parameters. R-test, F-test and P-test were carried out on the model respectively. The test results showed that the model had high precision. It could guide to cut machinable glass ceramics on prediction and controlling of turning force in some degree.

scholarly journals The Effect of Coatings on Cutting Force in Turning of C45 Steel

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 590
Author(s):  
Jaroslav Kovalčík ◽  
Petr Mašek ◽  
Jan Malý ◽  
Pavel Kožmín ◽  
Jiří Syrovátka
Keyword(s):  
Mathematical Model ◽  
Cutting Force ◽  
Correction Factor ◽  
Cutting Speed ◽  
Model Material ◽  
T Test ◽  
Cutting Edge ◽  
Percentage Difference ◽  
The Difference ◽  
Paired T Test

This article focuses on the development of a mathematical model of a cutting force that is applicable for coated and uncoated cutting tool inserts and aims to enable more accurate calculation of the cutting force. Two common PVD coatings, AlTiN and TiAlCrN, were used. Firstly, a mathematical model of the cutting force based on the specific cutting force and cutting area is proposed. This mathematical model considers the cutting speed and coating correction factor as well as the real cutting edge geometry, i.e., it includes both the straight and rounded parts of the cutting edge. For this proposed model, material constants for C45 steel, which was machined with uncoated inserts, were obtained. Before determining an equation for a coating correction factor and implementing it into the model, experimental cutting force data for coated and uncoated inserts were compared using a paired t-test. The result was that the difference between them was statistically significant. Their percentage difference was found to be up to 4%. The correction factor equation that was obtained and implemented into the mathematical model was applied to compare the calculated and experimental data of the coated inserts, also using a paired t-test. The result was that the difference between them was insignificant. Moreover, their percentage difference was found to be up to 0.6%.

scholarly journals Research on the Cutting Principle and Tool Design of Gear Skiving Based on the Theory of Conjugate Surface

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Peng Wang ◽  
Jingcai Li ◽  
Lin Han
Keyword(s):  
Mathematical Model ◽  
Design Principle ◽  
Design Method ◽  
Tool Design ◽  
Theoretical Research ◽  
Machining Accuracy ◽  
Rake Face ◽  
Key Factors ◽  
Flank Face ◽  
The Mathematical Model

Tool design is one of the key factors that restrict the development of gear skiving technology since the design principle does not correspond to the cutting principle. The existing skiving tool cannot achieve ideal machining accuracy and reasonable cutting angles. In view of this, some research has been done in this paper. Firstly, the skiving principle is investigated essentially according to the skiving motions. Then, the principle of tool design is analyzed based on the theory of conjugate surface, and a new tool design method is proposed to match the skiving principle. For this, all the skiving patterns for various kinds of workpieces are enumerated and summarized to abstract a normalized skiving model. Based on this, the mathematical model of the conjugate surface is then derived to lay the foundation for tool design. Then, the design methods of cutting edge, rake face, and flank face are proposed. An example is presented at last, and the cutting simulation is conducted. The result proves that the proposed methods are correct and valid. The theoretical research in this paper could promote the improvement of skiving tools.

scholarly journals Effects of Turning Parameters and Parametric Optimization of the Cutting Forces in Machining SiCp/Al 45 wt% Composite

Metals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 840 ◽  
Author(s):  
Rashid Ali Laghari ◽  
Jianguang Li ◽  
Mozammel Mia
Keyword(s):  
Mathematical Model ◽  
Cutting Force ◽  
Feed Rate ◽  
Cutting Forces ◽  
Desirability Function ◽  
Interactive Effect ◽  
Cutting Speed ◽  
Experimental Results ◽  
Machining Process ◽  
Depth Of Cut

Cutting force in the machining process of SiCp/Al particle reinforced metal matrix composite is affected by several factors. Obtaining an effective mathematical model for the cutting force is challenging. In that respect, the second-order model of cutting force has been established by response surface methodology (RSM) in this study, with different cutting parameters, such as cutting speed, feed rate, and depth of cut. The optimized mathematical model has been developed to analyze the effect of actual processing conditions on the generation of cutting force for the turning process of SiCp/Al composite. The results show that the predicted parameters by the RSM are in close agreement with experimental results with minimal error percentage. Quantitative evaluation by using analysis of variance (ANOVA), main effects plot, interactive effect, residual analysis, and optimization of cutting forces using the desirability function was performed. It has been found that the higher depth of cut, followed by feed rate, increases the cutting force. Higher cutting speed shows a positive response by reducing the cutting force. The predicted and experimental results for the model of SiCp/Al components have been compared to the cutting force of SiCp/Al 45 wt%—the error has been found low showing a good agreement.

Influence of Tool Design on the Cutting Force in the Machining of Noninvolute Gears

2020 ◽  
Vol 40 (4) ◽  
pp. 316-319
Author(s):  
S. N. Grigor’ev ◽  
A. S. Selivanov ◽  
I. N. Bobrovskii ◽  
N. V. Kanatnikov ◽  
A. S. Pashmentova
Keyword(s):  
Cutting Force ◽  
Tool Design

CUTTING TEMPERATURE WHEN PROCESSING WITH ELASTIC ABRASIVE WHEELS

2020 ◽  
pp. 55-60
Author(s):  
YU.V. Dimov ◽  
D.B. Podashev
Keyword(s):  
Mathematical Model ◽  
Cutting Force ◽  
Cutting Temperature ◽  
Polymer Binder ◽  
Thermal Processes ◽  
Abrasive Wheel ◽  
Processing Mode ◽  
Abrasive Grain ◽  
The Impact ◽  
The Mathematical Model

The thermal processes that occur during processing with elastic abrasive wheels (EAW) are analyzed. The calculation of heat from the impact of a single abrasive grain and the temperature of the billet during processing, which should be lower than the melting temperature of the EAW polymer binder, is proposed. The adequacy of the mathematical model is confirmed by experiments. Keywords: ELASTIC ABRASIVE WHEEL, MICRORELIEF, CUTTING FORCE, TEMPERATURE, PROCESSING MODE. [email protected]

Design of technological complexes. Part 2. Methodology for non-stationary technological complexes usage

2020 ◽  
pp. 26-29
Author(s):  
S.A. Rusanovskiy ◽  
M.P. Hudyakov
Keyword(s):  
Mathematical Model ◽  
Model Design ◽  
Design Technique ◽  
General Mathematical Model

A methodology for the design of non-stationary technological complexes (NSTC) is developed. On the basis of the general mathematical model of technological complexes, particular models of the components of the NSTC and, in particular, for slipway processing of cuts for welding in hull structures of underwater shipbuilding, are obtained. Keywords non-stationary technological complexes, cutting for welding, mathematical model, design technique. [email protected], [email protected]

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