2 research outputs found
ΠΠ΅ΠΊΠΎΡΠΎΡΡΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΎΠ²ΡΡ ΡΠ·Π»ΠΎΠ² ΠΏΡΠ΅ΡΠΈΠ·ΠΈΠΎΠ½Π½ΡΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΏΠΈΠ½Π΄Π΅Π»Π΅ΠΉ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΏΠ°Ρ ΡΡΠ΅Π½ΠΈΡ ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ
In mechanical engineering, various types of bearing units are used in moving connections and sliding pairs (sliding bearings, guides, bushings) are sufficiently widely used. This allows increasing the stiffness of the units, reducing their dimensions, improving heat dissipation, etc. But there are higher friction losses, probability in the increases of situations in which there is a jamming of friction surfaces for application of sliding friction pairs compared to the rolling bearings. These problems are even more important for application of sliding bearings in precision equipment, which typically operates under temperature and humidity stabilized conditions. The aim of the work is the development of methodological approaches to the creation and rational design and manufacture of sliding friction pairs based on the composite antifriction materialsβ coatings for the application in vertical precision program-controlled electrospindles for high-speed machining. Questions of development and manufacturing of friction units for precision electrospindles with high rigidity on the basis of composite materials are considered. It is shown that acceptable cutting speed (750 m/min or more) for the quality standpoint of processing with a diamond-like tool can be achieved by placing the cutting edge of the tool on diameter of 200 mm. As a result, two tasks solved: the rigidity of the electrospindle for ultra-high accuracy of mechanical blade processing is achieved; high smoothness of work is provided, which allows achieving nanometric surface roughness with a decrease of deviations to 1 Β΅m from the middle surface line. It is extremely important for a number of special applications.Π ΠΌΠ°ΡΠΈΠ½ΠΎΡΡΡΠΎΠ΅Π½ΠΈΠΈ Π² ΠΏΠΎΠ΄Π²ΠΈΠΆΠ½ΡΡ
ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡΡ
ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΡΡΡΡ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠ΅ ΡΠΈΠΏΡ ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΎΠ²ΡΡ
ΡΠ·Π»ΠΎΠ², ΠΏΡΠΈΡΠ΅ΠΌ Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎ ΡΠΈΡΠΎΠΊΠΎ β ΠΏΠ°ΡΡ ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ (ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΈ ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ, Π½Π°ΠΏΡΠ°Π²Π»ΡΡΡΠΈΠ΅, Π²ΡΡΠ»ΠΊΠΈ). ΠΡΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΏΠΎΠ²ΡΡΠΈΡΡ ΠΆΠ΅ΡΡΠΊΠΎΡΡΡ ΡΠ·Π»ΠΎΠ², ΡΠΌΠ΅Π½ΡΡΠΈΡΡ ΠΈΡ
Π³Π°Π±Π°ΡΠΈΡΠ½ΡΠ΅ ΡΠ°Π·ΠΌΠ΅ΡΡ, ΡΠ»ΡΡΡΠΈΡΡ ΡΠ΅ΠΏΠ»ΠΎΠΎΡΠ²ΠΎΠ΄ ΠΈ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΡΡ ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΠ΅ ΡΡΠΌΠ° ΠΈ Π²ΠΈΠ±ΡΠ°ΡΠΈΠΉ. ΠΠ΄Π½Π°ΠΊΠΎ Π² ΡΡΠ΄Π΅ ΡΠ»ΡΡΠ°Π΅Π² ΠΏΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ ΠΏΠ°Ρ ΡΡΠ΅Π½ΠΈΡ ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡΡ Π±ΠΎΠ»Π΅Π΅ Π²ΡΡΠΎΠΊΠΈΠ΅ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠ°ΠΌΠΈ ΠΊΠ°ΡΠ΅Π½ΠΈΡ ΠΏΠΎΡΠ΅ΡΠΈ Π½Π° ΡΡΠ΅Π½ΠΈΠ΅, ΠΏΠΎΠ²ΡΡΠ°Π΅ΡΡΡ Π²Π΅ΡΠΎΡΡΠ½ΠΎΡΡΡ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ ΡΠΈΡΡΠ°ΡΠΈΠΉ, ΠΊΠΎΠ³Π΄Π° ΠΏΡΠΎΠΈΡΡ
ΠΎΠ΄ΠΈΡ Π·Π°Π΅Π΄Π°Π½ΠΈΠ΅ ΡΡΡΡΠΈΡ
ΡΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ΅ΠΉ. ΠΠΎΠ»ΡΡΠΎΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ ΡΡΠΈ ΠΏΡΠΎΠ±Π»Π΅ΠΌΡ ΠΈΠΌΠ΅ΡΡ ΠΏΡΠΈ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠΈ ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΎΠ² ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ Π² ΠΏΡΠ΅ΡΠΈΠ·ΠΈΠΎΠ½Π½ΠΎΠΌ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΠΈ, ΠΊΠΎΡΠΎΡΠΎΠ΅, ΠΊΠ°ΠΊ ΠΏΡΠ°Π²ΠΈΠ»ΠΎ, ΡΡΠ½ΠΊΡΠΈΠΎΠ½ΠΈΡΡΠ΅Ρ ΠΏΡΠΈ ΡΡΠ°Π±ΠΈΠ»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΏΠΎ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΠΈ Π²Π»Π°ΠΆΠ½ΠΎΡΡΠΈ Π²Π½Π΅ΡΠ½ΠΈΡ
ΡΡΠ»ΠΎΠ²ΠΈΡΡ
. ΠΠΎΡΡΠΎΠΌΡ ΡΠ΅Π»ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΡΠ²Π»ΡΠ»Π°ΡΡ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠΎΠ΄Ρ
ΠΎΠ΄ΠΎΠ² ΠΊ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ ΠΈ ΡΠ°ΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠΌΡ ΠΊΠΎΠ½ΡΡΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΈΠ·Π³ΠΎΡΠΎΠ²Π»Π΅Π½ΠΈΡ ΠΏΠ°Ρ ΡΡΠ΅Π½ΠΈΡ ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΠΈΠ· ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½Π½ΡΡ
Π°Π½ΡΠΈΡΡΠΈΠΊΡΠΈΠΎΠ½Π½ΡΡ
ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ², ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΠΌΡΡ
Π² Π²Π΅ΡΡΠΈΠΊΠ°Π»ΡΠ½ΡΡ
ΠΏΡΠ΅ΡΠΈΠ·ΠΈΠΎΠ½Π½ΡΡ
ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΠΎ-ΡΠΏΡΠ°Π²Π»ΡΠ΅ΠΌΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΡΠΏΠΈΠ½Π΄Π΅Π»ΡΡ
Π΄Π»Ρ ΡΠΊΠΎΡΠΎΡΡΠ½ΠΎΠΉ ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΈ. Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ Π²ΠΎΠΏΡΠΎΡΡ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΠΈ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΎΠ²ΡΡ
ΡΠ·Π»ΠΎΠ² ΠΏΡΠ΅ΡΠΈΠ·ΠΈΠΎΠ½Π½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΡΠΏΠΈΠ½Π΄Π΅Π»Π΅ΠΉ ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΠΎΠΉ ΠΆΠ΅ΡΡΠΊΠΎΡΡΠΈ Ρ ΠΏΠ°ΡΠ°ΠΌΠΈ ΠΏΠ°Ρ ΡΡΠ΅Π½ΠΈΡ ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½Π½ΡΡ
ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ². ΠΠΈΠ°ΠΌΠ΅ΡΡΡ ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΎΠ² ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ ΠΌΠΎΠ³ΡΡ Π±ΡΡΡ Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎ Π±ΠΎΠ»ΡΡΠΈΠΌΠΈ, ΡΡΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΡ ΡΡΠ΅Π±ΡΠ΅ΠΌΠΎΠΉ ΡΠ²Π΅ΡΡ
Π²ΡΡΠΎΠΊΠΎΠΉ ΡΠΎΡΠ½ΠΎΡΡΠΈ ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΈ ΠΈ Π½Π°Π½ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅ΡΠΎΡ
ΠΎΠ²Π°ΡΠΎΡΡΠΈ ΠΎΠ±ΡΠ°Π±Π°ΡΡΠ²Π°Π΅ΠΌΠΎΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ. ΠΡΠΈΠ΅ΠΌΠ»Π΅ΠΌΡΠ΅ Ρ ΠΏΠΎΠ·ΠΈΡΠΈΠΉ ΠΊΠ°ΡΠ΅ΡΡΠ²Π° ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΈ Π°Π»ΠΌΠ°Π·ΠΎΠΏΠΎΠ΄ΠΎΠ±Π½ΡΠΌ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠΎΠΌ ΡΠΊΠΎΡΠΎΡΡΠΈ ΡΠ΅Π·Π°Π½ΠΈΡ (750 ΠΌ/ΠΌΠΈΠ½ ΠΈ Π±ΠΎΠ»Π΅Π΅) ΠΌΠΎΠ³ΡΡ Π±ΡΡΡ Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΡ ΠΏΡΠΈ ΡΠ°Π·ΠΌΠ΅ΡΠ΅Π½ΠΈΠΈ ΡΠ΅ΠΆΡΡΠ΅ΠΉ ΠΊΡΠΎΠΌΠΊΠΈ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ° Π½Π° Π΄ΠΈΠ°ΠΌΠ΅ΡΡΠ΅ 200 ΠΌΠΌ, ΡΡΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΡ Π² ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ ΡΠΏΠΈΠ½Π΄Π΅Π»Ρ ΡΠΌΠ°Π·ΡΠ²Π°Π΅ΠΌΡΠ΅ ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΈ ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ. ΠΡΠ»Π΅Π΄ΡΡΠ²ΠΈΠ΅ ΡΡΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΠΎ ΡΠ΅ΡΠ°ΡΡΡΡ Π΄Π²Π΅ Π·Π°Π΄Π°ΡΠΈ: Π΄ΠΎΡΡΠΈΠ³Π°Π΅ΡΡΡ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠ°Ρ Π΄Π»Ρ ΡΠ²Π΅ΡΡ
Π²ΡΡΠΎΠΊΠΎΠΉ ΡΠΎΡΠ½ΠΎΡΡΠΈ ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠΉ Π»Π΅Π·Π²ΠΈΠΉΠ½ΠΎΠΉ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΈ ΠΆΠ΅ΡΡΠΊΠΎΡΡΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΏΠΈΠ½Π΄Π΅Π»Ρ; ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°Π΅ΡΡΡ Π²ΡΡΠΎΠΊΠ°Ρ ΠΏΠ»Π°Π²Π½ΠΎΡΡΡ ΡΠ°Π±ΠΎΡΡ, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡΠ°Ρ Π΄ΠΎΡΡΠΈΡΡ Π½Π°Π½ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅ΡΠΎΡ
ΠΎΠ²Π°ΡΠΎΡΡΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΏΡΠΈ ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΠΈ ΠΌΠ°ΠΊΡΠΎΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠΉ Π΄ΠΎ 1 ΠΌΠΊΠΌ ΠΎΡ ΡΡΠ΅Π΄Π½Π΅ΠΉ Π»ΠΈΠ½ΠΈΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ, ΡΡΠΎ Π² ΡΠΎΠ²ΠΎΠΊΡΠΏΠ½ΠΎΡΡΠΈ ΡΡΠ΅Π·Π²ΡΡΠ°ΠΉΠ½ΠΎ Π²Π°ΠΆΠ½ΠΎ Π΄Π»Ρ ΡΡΠ΄Π° ΡΠΏΠ΅ΡΠΈΠ°Π»ΡΠ½ΡΡ
ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠΉ
ΠΠ΅ΠΊΠΎΡΠΎΡΡΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΎΠ²ΡΡ ΡΠ·Π»ΠΎΠ² ΠΏΡΠ΅ΡΠΈΠ·ΠΈΠΎΠ½Π½ΡΡ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΏΠΈΠ½Π΄Π΅Π»Π΅ΠΉ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΏΠ°Ρ ΡΡΠ΅Π½ΠΈΡ ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ
Various types of bearing units are used for movable connections in mechanical engineering, and sliding pairs (sliding bearings, guides, bushings) are rather widely applied for this purpose. This allows increasing stiffness of units to reduce their dimensions, to improve heat dissipation and ensure reduction in noise and vibration. However in some cases while using a sliding friction pair higher friction losses occur in comparison with ball bearings and probability is increasing for situations when there is a jamming of friction surfaces. These problems have great significance for application of sliding bearings in precision equipment, which typically operates under stabilized temperature and humidity conditions. So an aim of the investigations is to develop methodological approaches for creation and rational design and manufacture of sliding friction pairs based on application of coatings formed of composite antifriction materials which are used in vertical precision program-controlled electro-spindles for high-speed machining. The paper considers issues pertaining to development and creation of friction units for precision electro-spindles of high rigidity with sliding friction pairs on the basis of composite materials. Diameters of sliding bearings can be rather large that makes it possible to obtain the required super-high accuracy in mechanical processing and nanometric roughness of the machined surface. A cutting speed (750 m/min or more) which is acceptable with regard to quality of machining by a diamond-like tool can be achieved by placing a cutting edge of the tool on diameter of 200 mm. Such approach permits to use lubricated sliding bearings in the spindle design. As a result, two tasks can be solved in an integrated manner. They include the required rigidity of an electrospindle for ultra-high accuracy of mechanical blade processing and high smoothness of the machined surface providing nanometric surface roughness with a decrease of macrodeviations up to 1 ΞΌm from a middle surface line. It is worth to note that this is extremely important for a number of special application