Кафедра "Інтегровані технології машинобудування ім. М. Ф. Семка"

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/3115

Офіційний сайт кафедри http://web.kpi.kharkov.ua/cutting

Від 2005 року кафедра має назву "Інтегровані технології машинобудування" ім. М. Ф. Семка, попередня назва – "Різання матеріалів та різальні інструменти".

Кафедра заснована в 1885 році. Свої витоки вона веде від кафедри механічної технології (у подальшому – кафедра загального машинобудування, кафедра холодної обробки матеріалів, кафедра різання матеріалів та різальних інструментів).

Засновником і першим завідувачем кафедри був фундатор технологічної підготовки інженерів-механіків в ХТПІ Костянтин Олексійович Зворикін.

Кафедра входить до складу Навчально-наукового інституту механічної інженерії і транспорту Національного технічного університету "Харківський політехнічний інститут і є провідним науково-дослідним і освітнім центром України в галузі високих інтегрованих технологій у машинобудуванні. У науковій школі кафедри різання матеріалів підготовлені 18 докторів технічних наук і 104 кандидата технічних наук.

У складі науково-педагогічного колективу кафедри працюють: 3 доктора технічних наук, 9 кандидатів технічних наук; 3 співробітника мають звання професора, 6 – доцента.

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Зараз показуємо 1 - 7 з 7

The effect of burnishing process on skewness and kurtosis of the scale limited surface
(Національний технічний університет "Харківський політехнічний інститут", 2022) Ferencsik, Viktoria; Varga, Gyula
In this paper roughness examination and analysis on burnished low alloyed aluminium surfaces are reported, highlighting 2 parameters from the vertical deviations of the roughness profile from the mean line. From the input parameters of the burnishing process, the effect of burnishing force, feed rate, speed and number of passes are investigated. Measurements of the surface topography – before and after burnishing – are conducted on an Altisurf 520 3D measuring device. The generated and calculated values of the machined surface roughness are analysed in detail with the drawing of the conclusions as well.
Experimental examination of surface micro-hardness improvement ratio in burnishing of external cylindrical workpieces
(Національний технічний університет "Харківський політехнічний інститут", 2020) Varga, Gyula; Ferencsik, Viktoria
This paper deals with the experimental examination of surface micro-hardness improvement ratio in burnishing of external cylindrical workpieces. The material of the examined workpiece was AISI 304 austenitic stainless steel. In our experiments, we investigated the sliding frictional burnishing of an outer cylindrical surface when the burnishing tool had a diamond material-grade spherical tip. Using the full factorial experimental design technique, we aimed to determine how the changes in burnishing parameters, i.e., burnishing speed, burnishing feed, and burnishing force effect on the changes of surface micro-hardness and surface micro-hardness improvement ratio. Based on examinations, the best burnishing parameter combination could be selected.
Fe investigation of surface burnishing technology abstract
(Національний технічний університет "Харківський політехнічний інститут", 2020) Ferencsik, Viktoria; Gal, V.
This paper investigates the finite element analysis of cold forming diamond burnishing process on aluminium alloy, where the input parameters are force, feed rate and speed, as an output parameter the changing of surface roughness is analysed. This lifetime increasing process effectively reduces roughness, improves shape correctness, and increases the hardness of the sub-surface area. Machining simulation of the turned surface before burnishing is based on the real model, corresponding to the measured values, by using DEFORM-2D software in order to validate the improvement of surface quality with numerical values too.
Investigation of shape correctness of diamond burnished low alloyed aluminium components
(Національний технічний університет "Харківський політехнічний інститут", 2020) Ferencsik, Viktoria; Varga, Gyula
Conventional machining methods such as turning or milling can cause surface irregularities, defects such as tool traces and scratches, resulting in energy dissipation (friction) and surface damage (wear). In contrast, the environmentally friendly chipless burnishing process clearly improves the integrity of the machined surface and largely considered in industrial cases in order to restructure surface characteristics. In this paper influence of different burnishing parameters, such as burnishing speed (v), feed rate (f) and burnishing force (F) are examined. Based on theoretical considerations, we use full factorial experimental design method to determine the optimal combination level of the different parameters in the given interval. The measurement of the shape correctness was executed with Taylor Hobson Talyrond 365 measuring equipment at the Institute of Manufacturing Science.
Examination of the change in surface roughness of burnished low alloyed aluminium external cylindrical pieces
(Національний технічний університет "Харківський політехнічний інститут", 2019) Ferencsik, Viktoria; Varga, Gyula
The life and reliability of machine components or elements are affected greatly by the surface integrity. Machined surfaces by conventional processes such as turning and milling have inherent irregularities and defects like tool marks and scratches that cause energy dissipation (friction) and surface damage (wear). Ball burnishing has proved to be a highly effective mechanical finishing process of industrial workpieces because of the excellent surface roughness and fatigue performance that induces in treated components. This paper focuses on the examination of the influence of different burnishing parameters, such as number of passes (i), feed rate (f) and burnishing force (F). For plan and execute the experiments we use full factorial experimental design method by which empirical formulas can be created easily. The measurement of the surface roughness was executed with Altisurf 520 3D measuring equipment at the Institute of Manufacturing Science. The measured results were evaluated by the comparison of a special correlation formula to determine the optimal combination level of the different parameters in the given interval.
Examination of 3D surface topography of diamond burnished C45 workpieces
(Національний технічний університет "Харківський політехнічний інститут", 2019) Ferencsik, Viktoria; Varga, Gyula
Nowadays cold working operations like rolling, burnishing are important finishing methods. In this paper the diamond burnishing of external cylindrical surfaces are studied. The principle of this process is that a pressing tool, which goes along the surface of the workpiece with linear motion having given parameters (e.g. feed) while the workpiece is rotating. Using of diamond burnishing has many preferences: surface roughness of the workpiece is improving, hardness of the surface is increasing while it’s micro-structure is also improving. Fatigue strength is increasing significantly due to the compressive residual stress in the subsurface area causing by burnishing. The aim of this study was to examine the influence of different burnishing parameters, such as burnishing speed, feed and force with the using of two different kinematic viscosity oil. For plan and execute the experiments we used the Taguchy type full factorial experimental design method by which empirical formulas can be created easily. The measurement of the surface roughness was executed with Altisurf 520 3D measuring equipment at the Institute of Manufacturing Science. The measured results were evaluated by the comparison of a special correlation formula to determine the optimal combination level of the different parameters in the given interval.
Examination of residual stresses on diamond burnished cylindrical surfaces
(НТУ "ХПИ", 2017) Varga, Gyula; Ferencsik, Viktoria
Cold plastic finish manufacturing methods such as surface rolling, burnishing and surface hardening with shot peening play important role in the lifetime increasing manufacturing as compressive residual stress remains in near surface layers of the workpiece. This paper deals with examination of changing of residual stress caused by burnishing using diamond tipped tools. The diamond burnishing executed on outer cylindrical surfaces is a finishing manufacturing operation which results high accuracy and fine surface texture. The aim of the examinations was to determine how the burnishing speed, feed rate and burnishing force has affect on the residual stresses in case of diamond burnishing of low alloyed aluminium shafts. The Taguchi type Factorial experiment design was used for planning of experiments. The measurement of residual stresses was performed by an X-ray diffraction method. The evaluation of measured results was done by a specially specified ratio to determine the parameter set which results the best residual stress values in between the given range of technological parameters.