Другие журналы

. A B C D E F G H I J K L M N O P R S T U V W Y Z К М С Т


The Provement of the Conditions of End Mill Operation in External Panels of the Aluminum Alloys
Engineering Education # 05, May 2014
DOI: 10.7463/0514.0709770
We have worked out the calculation procedure of cutting force and contact pressures between the back surface of tool tooth and aluminum alloy component used for mill operation with end-milling cutter. This force calculation includes the aluminum alloy softening under the impact of cutting temperature. The calculated force figures and figures of contact pressures on the back surface of tool tooth are used for evaluation of the bottom strain and deformation appearing while digging and pocket mill operation inside the external panel of aluminum alloy. The cutting techniques and mill operation conditions have been also approved. The testing of the research results held within the processing the mill operation technologies of the external panels in manu-facturing environment has also been carried out
Process modeling and ultra-precision machining technology development for flat reflectors using a diamond milling head
Engineering Education # 02, February 2014
DOI: 10.7463/0214.0699743
The article describes a discontinuous process to machine flat aluminum alloy reflectors using a milling head equipped with a single-point diamond cutter. A developed technology allows machining the parts of optical surface quality. The article analyses the kinematic scheme and presents the model to calculate the cutting forces and temperatures. It also offers schemes to determine the cutting length when machining the flat reflector. The proposed model-based data have been compared with the experimental study data from various sources. The experimentation part represents the flat reflector machining results achieved owing to developed technology. The tests have confirmed the technology effectiveness. The ways to improve the quality of machining have been outlined.
Research of end mills during milling of body parts made of aluminum alloys
Engineering Education # 12, December 2013
DOI: 10.7463/1213.0634375
Conditions of milling cut of work pieces made of aluminum alloys by end mills were considered in this article. The authors analysed parameters of the cross-section cutting layer, shear angle, contact pressure on working surfaces of the tooth’s cutting edge. A technique for calculating power, torque and contact pressure from a tool’s cutting edge on the processed surface during milling cut by end mills was developed. The method was designed for taking into account the restrictions on power parameters of the milling process when selecting operational parameters. In the experimental part of this work cutting properties of interlocking and solid hard-alloy end mills were investigated during milling of grooves, pockets, ledges in work pieces made of aluminium alloys.
Process analysis, sharpening and testing of cutters made of boron nitride
Engineering Education # 09, September 2013
DOI: 10.7463/0913.0598355
In this paper the authors consider a process of finish turning of work pieces made of hardened steel with cutters equipped with tool materials based on boron nitride such as cubic boron nitride CBN10 (SECO) and Dense Boron Nitride (DBN). An analysis was conducted, and a method for calculating parameters of turning hardened steel work pieces was proposed; these parameters are forces, cutting temperature, wear rate, magnitude of wear, tool durability and parameters of chip formation. In the experimental part of this study the authors describe a technology of precision sharpening of cutting tools made of DBN; the quality of sharpening was estimated. Test results of the cutters during the process of turning of cylindrical and end face surfaces along with boring a hole in a work piece made of 9HS HRC 60 steel are presented in this work. Results of a quality estimation of the machined surfaces are also given. The conducted studies confirmed effectiveness of the use of cutters made of dense boron nitride for precision machining of hardened steel.
Development of technology and research of quality of sharpening of precision cutting tools made of ultra-hard materials
Engineering Education # 09, September 2012
DOI: 10.7463/0912.0482398
 The article describes the process of sharpening of precision cutting tools made of ultra-hard materials for ultra-precise cutter-grinding machines. These are the requirements to be met by the sharpened surface and by the means by which they are achieved. The authors present the results of their research of the quality of sharpened surfaces, and the results of tests of different cutters operations. 
Research of cutting properties of boron nitride cutters
Engineering Education # 06, June 2012
DOI: 10.7463/0612.0423622
The authors analyze properties of ultra-hard tool materials on the basis of boron nitride of various brands and manufacturers – both domestic and foreign. Recommendations on regime parameters of processing work pieces made of hardened steel were analyzed. Calculation dependences of tool life, cutting speed, forces and roughness of the processed surface are given. The authors present the results of their experimental research of cutting properties of various brands of tool materials on the basis of boron nitride when processing work pieces made of hardened steel. Directions for further investigations of tools made of modern materials on the basis of boron nitride were outlined.
77-30569/243000 Modelling of the diamond turning process of large-sized surfaces of mirrors
Engineering Education # 10, October 2011
A simulation of diamond turning operation process of metal optic components with aluminum and copper surfaces was carried out. Theoretical basis of the process were studied and algorithms of machine parameters optimal operation were developed. Diamond turning technologies of large sizes surfaces up to 1000 mm in diameter were examined. Researches of natural diamonds crystals and ultra wear resistance for large sizes surfaces machining were made. Above these questions a condition of optic surfaces was researched and their high quality in roughness and reflectance was explored.
Development model of process in diamond turning for optical metals elements
Engineering Education # 12, December 2009
Results of modelling and calculations of the parametres characterising about diamond turning of reflecting surfaces of metals elements, chemical lasers a part to the optical scheme are resulted. By a subject of researches are accepted: process ultraprecise cutting edge processings surfaces of metals elements, regime parametres is diamond turning, forces, temperatures, processing errors. Recommendations about perspective possibilities diamond turning are developed.
elibrary crossref ulrichsweb neicon rusycon

About Project
Rambler's Top100
Phone: +7 (915) 336-07-65 (строго: среда; пятница c 11-00 до 17-00)
© 2003-2024 «Наука и образование»
Перепечатка материалов журнала без согласования с редакцией запрещена
 Phone: +7 (915) 336-07-65 (строго: среда; пятница c 11-00 до 17-00)