3 research outputs found
Experimental study and mathematical modelling of face milling forces of high-strength high-viscosity shipbuilding steel
Mechanical processing of hole edges in large-size hull structures of single and double curvature for welding saturation parts into them is an urgent task of shipbuilding. A considerable amount of such machining has to be performed directly on the slipway on a fully assembled structure. To perform such works non-stationary technological machining complexes are used, which have reduced rigidity in comparison with stationary equipment. The article summarizes the results of mathematical modeling of cutting forces during face milling of a workpiece made of high-strength high-viscosity shipbuilding steel. The application of high-speed face milling in order to reduce the value and non-uniformity of cutting forces is theoretically substantiated. Recommendations for selection of technological cutting modes and tool geometry are determined. The obtained experimental data confirm the possibility and expediency of high-speed face milling of hull structures made of hard-to-machine materials under conditions of a low-rigid technological system
Π§ΠΈΡΠ»Π΅Π½Π½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ ΠΠΎΠ½ΡΠ΅-ΠΠ°ΡΠ»ΠΎ Π² Π·Π°Π΄Π°ΡΠ΅ Π°Π½Π°Π»ΠΈΠ·Π° ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΡ ΡΡΠ΅Π΄ΡΡΠ²
The problem of ensuring high temperature stability of parameters by reason of the characteristic
features inherent in the integral performance becomes especially urgent for microminiature
electronic devices. For the mathematical description of the electronic devicesβ temperature error
it is proposed to use the method of experimentβs statistical planning in combination with regression
analysis. There are classes of electrical circuits in which the output parameter depends mainly on
one-parameter electrical radio elements. In the article it is shown that the problem of obtaining the
temperature error equation for such electrical circuits can be reduced to the problem of effective
finding of the one-parameter electro radio elementsβ influence coefficients. A modification of the
Monte Carlo statistical method with the computational factor experimentβs scenario to find the
temperature error equation is considered. Approbation of the proposed modification is carried
out using the example of the electric circuit of the generator with the Wien bridgeΠΠ»Ρ ΠΌΠΈΠΊΡΠΎΠΌΠΈΠ½ΠΈΠ°ΡΡΡΠ½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΡ
ΡΡΠ΅Π΄ΡΡΠ² ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎ Π°ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΉ ΡΡΠ°Π½ΠΎΠ²ΠΈΡΡΡ Π·Π°Π΄Π°ΡΠ°
ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ Π²ΡΡΠΎΠΊΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² Π² ΡΠ²ΡΠ·ΠΈ Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ½ΡΠΌΠΈ
ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΡΠΌΠΈ, ΠΏΡΠΈΡΡΡΠΈΠΌΠΈ ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΠΎΠΌΡ ΠΈΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ. ΠΠ»Ρ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΠΏΠΈΡΠ°Π½ΠΈΡ
ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΠΏΠΎΠ³ΡΠ΅ΡΠ½ΠΎΡΡΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΡ
ΡΡΠ΅Π΄ΡΡΠ² ΠΏΡΠ΅Π΄Π»Π°Π³Π°Π΅ΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅
ΠΌΠ΅ΡΠΎΠ΄Π° ΡΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° Π² ΡΠΎΡΠ΅ΡΠ°Π½ΠΈΠΈ Ρ ΡΠ΅Π³ΡΠ΅ΡΡΠΈΠΎΠ½Π½ΡΠΌ
Π°Π½Π°Π»ΠΈΠ·ΠΎΠΌ. Π‘ΡΡΠ΅ΡΡΠ²ΡΡΡ ΠΊΠ»Π°ΡΡΡ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡ
Π΅ΠΌ, Π² ΠΊΠΎΡΠΎΡΡΡ
Π²ΡΡ
ΠΎΠ΄Π½ΠΎΠΉ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡ
Π·Π°Π²ΠΈΡΠΈΡ Π² ΠΎΡΠ½ΠΎΠ²Π½ΠΎΠΌ ΠΎΡ ΠΎΠ΄Π½ΠΎΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ»Π΅ΠΊΡΡΠΎΡΠ°Π΄ΠΈΠΎΠΈΠ·Π΄Π΅Π»ΠΈΠΉ. Π ΡΡΠ°ΡΡΠ΅
ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π·Π°Π΄Π°ΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΠΏΠΎΠ³ΡΠ΅ΡΠ½ΠΎΡΡΠΈ Π΄Π»Ρ ΡΠ°ΠΊΠΈΡ
ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡ
Π΅ΠΌ ΠΌΠΎΠΆΠ½ΠΎ ΡΠ²Π΅ΡΡΠΈ ΠΊ Π·Π°Π΄Π°ΡΠ΅ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π½Π°Ρ
ΠΎΠΆΠ΄Π΅Π½ΠΈΡ ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΠΎΠ²
Π²Π»ΠΈΡΠ½ΠΈΡ ai ΠΎΠ΄Π½ΠΎΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ»Π΅ΠΊΡΡΠΎΡΠ°Π΄ΠΈΠΎΠΈΠ·Π΄Π΅Π»ΠΈΠΉ. Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Π° ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡ
ΡΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΌΠ΅ΡΠΎΠ΄Π° ΠΠΎΠ½ΡΠ΅-ΠΠ°ΡΠ»ΠΎ ΠΏΠΎ ΡΡΠ΅Π½Π°ΡΠΈΡ Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΠΊΡΠΎΡΠ½ΠΎΠ³ΠΎ
ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° Π΄Π»Ρ Π½Π°Ρ
ΠΎΠΆΠ΄Π΅Π½ΠΈΡ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΠΏΠΎΠ³ΡΠ΅ΡΠ½ΠΎΡΡΠΈ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½Π°
Π°ΠΏΡΠΎΠ±Π°ΡΠΈΡ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠΉ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ Π½Π° ΠΏΡΠΈΠΌΠ΅ΡΠ΅ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡ
Π΅ΠΌΡ Π³Π΅Π½Π΅ΡΠ°ΡΠΎΡΠ° Ρ
ΠΌΠΎΡΡΠΎΠΌ ΠΠΈΠ½
Π§ΠΈΡΠ»Π΅Π½Π½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ ΠΠΎΠ½ΡΠ΅-ΠΠ°ΡΠ»ΠΎ Π² Π·Π°Π΄Π°ΡΠ΅ Π°Π½Π°Π»ΠΈΠ·Π° ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΡ ΡΡΠ΅Π΄ΡΡΠ²
The problem of ensuring high temperature stability of parameters by reason of the characteristic
features inherent in the integral performance becomes especially urgent for microminiature
electronic devices. For the mathematical description of the electronic devicesβ temperature error
it is proposed to use the method of experimentβs statistical planning in combination with regression
analysis. There are classes of electrical circuits in which the output parameter depends mainly on
one-parameter electrical radio elements. In the article it is shown that the problem of obtaining the
temperature error equation for such electrical circuits can be reduced to the problem of effective
finding of the one-parameter electro radio elementsβ influence coefficients. A modification of the
Monte Carlo statistical method with the computational factor experimentβs scenario to find the
temperature error equation is considered. Approbation of the proposed modification is carried
out using the example of the electric circuit of the generator with the Wien bridgeΠΠ»Ρ ΠΌΠΈΠΊΡΠΎΠΌΠΈΠ½ΠΈΠ°ΡΡΡΠ½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΡ
ΡΡΠ΅Π΄ΡΡΠ² ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎ Π°ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΉ ΡΡΠ°Π½ΠΎΠ²ΠΈΡΡΡ Π·Π°Π΄Π°ΡΠ°
ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ Π²ΡΡΠΎΠΊΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΎΠ² Π² ΡΠ²ΡΠ·ΠΈ Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ½ΡΠΌΠΈ
ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΡΠΌΠΈ, ΠΏΡΠΈΡΡΡΠΈΠΌΠΈ ΠΈΠ½ΡΠ΅Π³ΡΠ°Π»ΡΠ½ΠΎΠΌΡ ΠΈΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ. ΠΠ»Ρ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΠΏΠΈΡΠ°Π½ΠΈΡ
ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΠΏΠΎΠ³ΡΠ΅ΡΠ½ΠΎΡΡΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΡ
ΡΡΠ΅Π΄ΡΡΠ² ΠΏΡΠ΅Π΄Π»Π°Π³Π°Π΅ΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅
ΠΌΠ΅ΡΠΎΠ΄Π° ΡΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° Π² ΡΠΎΡΠ΅ΡΠ°Π½ΠΈΠΈ Ρ ΡΠ΅Π³ΡΠ΅ΡΡΠΈΠΎΠ½Π½ΡΠΌ
Π°Π½Π°Π»ΠΈΠ·ΠΎΠΌ. Π‘ΡΡΠ΅ΡΡΠ²ΡΡΡ ΠΊΠ»Π°ΡΡΡ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡ
Π΅ΠΌ, Π² ΠΊΠΎΡΠΎΡΡΡ
Π²ΡΡ
ΠΎΠ΄Π½ΠΎΠΉ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡ
Π·Π°Π²ΠΈΡΠΈΡ Π² ΠΎΡΠ½ΠΎΠ²Π½ΠΎΠΌ ΠΎΡ ΠΎΠ΄Π½ΠΎΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ»Π΅ΠΊΡΡΠΎΡΠ°Π΄ΠΈΠΎΠΈΠ·Π΄Π΅Π»ΠΈΠΉ. Π ΡΡΠ°ΡΡΠ΅
ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π·Π°Π΄Π°ΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΠΏΠΎΠ³ΡΠ΅ΡΠ½ΠΎΡΡΠΈ Π΄Π»Ρ ΡΠ°ΠΊΠΈΡ
ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡ
Π΅ΠΌ ΠΌΠΎΠΆΠ½ΠΎ ΡΠ²Π΅ΡΡΠΈ ΠΊ Π·Π°Π΄Π°ΡΠ΅ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π½Π°Ρ
ΠΎΠΆΠ΄Π΅Π½ΠΈΡ ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΠΎΠ²
Π²Π»ΠΈΡΠ½ΠΈΡ ai ΠΎΠ΄Π½ΠΎΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ»Π΅ΠΊΡΡΠΎΡΠ°Π΄ΠΈΠΎΠΈΠ·Π΄Π΅Π»ΠΈΠΉ. Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Π° ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡ
ΡΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΌΠ΅ΡΠΎΠ΄Π° ΠΠΎΠ½ΡΠ΅-ΠΠ°ΡΠ»ΠΎ ΠΏΠΎ ΡΡΠ΅Π½Π°ΡΠΈΡ Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΠΊΡΠΎΡΠ½ΠΎΠ³ΠΎ
ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° Π΄Π»Ρ Π½Π°Ρ
ΠΎΠΆΠ΄Π΅Π½ΠΈΡ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ ΠΏΠΎΠ³ΡΠ΅ΡΠ½ΠΎΡΡΠΈ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½Π°
Π°ΠΏΡΠΎΠ±Π°ΡΠΈΡ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠΉ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ Π½Π° ΠΏΡΠΈΠΌΠ΅ΡΠ΅ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡ
Π΅ΠΌΡ Π³Π΅Π½Π΅ΡΠ°ΡΠΎΡΠ° Ρ
ΠΌΠΎΡΡΠΎΠΌ ΠΠΈΠ½