Механики XXI веку №15 2016

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Механики XXI веку. №15 2016 г.
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Studing of quality of the surface carbide after combined
electro diamond grinding
Medvedeva O.I. Yanyushkin S.A.
Bratsk State University, 40 Makarenko st., Bratsk, 665709, Russian Federation
a
Keywords: carbide inserts, cutting tools, combined electro diamond grinding, surface roughness
The incisors equipped equipped with plates of hard alloys are used in metal working to equip in cisors. The
cutting surface of the tool is formed during finishing. In order to form the cutting edge of carbide plates are used
diamond wheels on metallic cords in the conductive. Investigations of the influence of methods of grinding (rough
grinding, rough grinding with continuous electrochemical editing range, electrochemical grinding, and electro
diamond grinding with continuous electrochemical editing) on the surface quality in the availability of surface defects,
condition and size of the cutting edge roughness are conducted. Comparative analysis of the presence of defects and
surface roughness shows that the combined treatment of the alloy by electro diamond grinding using continuous
electrochemical changes ensures the best quality of the surface that defines operational properties of the tool, and
satisfies the requirements.
УДК 621.9.02
Ways and technology cutting processing of composite materials,
their characteristics and efficiency
Yushcenko D.A.а, Kirichenko O.P.b
Bratsk State University, 40 Makarenko st., Bratsk, 665709, Russian Federation
а
Keywords: composite materials, prospects, specialized cutting tools, blade processing methods,
characteristics of the cutting process, the mechanism of wear, the processing productivity and quality
increasing
The article deals with the matters concerning the difficulties associated with the blade processing of compos-
ites; the mechanism of tool wear is elucidated; here is presented the analysis of the applied composites processing
methods and the types of specialized tools; are defined the technological approaches to improve the cutting tools oper-
ability, the possibility to make the products of composites using a cutting tool is presented; here, as well, is revealed a
short survey of the now available promising and optimal designs of the cutting tool; the difficulties associated with the
composites processing; are considered the possible structural-and-technological approaches to select the tool suited for
composites processing; are presented the results of studies aimed to the application of the polymer composite materials
in various industries to replace generally used conventional ones; the tool wear mechanism is studied; the structural
differences of the tools are analyzed; the research subjects urgency isproved; the prospects of the further implementa-
tion of the research results are defined.
The perspectives for the new technology development is associated with the extensive use of
polymeric composite materials (PCM), as their unique properties make it possible, in many cases, to improve
significantly operating characteristics of structural products to reduce labor consuming and specific
consumption of materials , thus contributing to the Russian products competitiveness in the world market.
Composite materials are gradually occupying the more prominent place in our life. There are numerous
plentiful areas of PCM application [1]. The implementation of the structural properties of the composites
depends largely on the degree of guaranteed quality products at the stage of machining.
Blade and abrasive machining are often used to produce CM articles. Recently, the expanding use of
jet-abrasive and laser processing has been increasing. Of Mechanical, ultrasonic and laser processing are
most commonly used to machine the polymeric composite materials (Table. 1) [2].
Due to wide application of polymeric composites it is worth analyzing just blade processing.
Blade processing of composite materials is used for finishing the parts and products in accordance to
designed size, achieving the desired accuracy and surface finish and to obtain complicated configurations of
the product, as well as. The analogy mechanical processing of metals does not give the desired results, since
polymeric composite materials cutting differs from the metals cutting process. This is due to the specific