Pub Date : 2021-12-01DOI: 10.36652/0202-3350-2020-21-12-536-546
G. N. Gur’yanov
The model of hardening is considered, which provides for dependence of the current yield strength σт on the product of the initial yield strength σт0 and drawing coeffi cient μ to the degree of hardening coeffi cient k (σт = σт0μk). Difference of axial stress increase from action of anti-tension in absence and action of hardening depending on hardening coeffi cient is determined. Dependencies of drawing stress, safety factor I.L. Perlin and stress state index V.L. Kolmogorov on hardening coeffi cient at different values of initial yield strength are built. Limit hardening factor k is defi ned, at which safety factor is equal to 1. Dependencies of deformation indices on initial yield strength of σт0 at different deformation parameters are constructed.
{"title":"Dependence of deformation indices on initial yield strength and\u0000hardening intensity of wire material in the passage of drawing route","authors":"G. N. Gur’yanov","doi":"10.36652/0202-3350-2020-21-12-536-546","DOIUrl":"https://doi.org/10.36652/0202-3350-2020-21-12-536-546","url":null,"abstract":"The model of hardening is considered, which provides for dependence of the current yield strength σт on the product\u0000of the initial yield strength σт0 and drawing coeffi cient μ to the degree of hardening coeffi cient k (σт = σт0μk). Difference of\u0000axial stress increase from action of anti-tension in absence and action of hardening depending on hardening coeffi cient is\u0000determined. Dependencies of drawing stress, safety factor I.L. Perlin and stress state index V.L. Kolmogorov on hardening\u0000coeffi cient at different values of initial yield strength are built. Limit hardening factor k is defi ned, at which safety factor\u0000is equal to 1. Dependencies of deformation indices on initial yield strength of σт0 at different deformation parameters are\u0000constructed.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123109657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.36652/0202-3350-2021-22-01-09-14
S. V. Antipov, D. Zhukov, A. Abashkin, S. Konovalov
The work is devoted to the problem of determining the ovality and distortion of the profile of pipes and other parts of a cylindrical shape with diameters from 1 to 2 meters when accessing only the external surface. Existing methods for determining diameters and ovality of parts was carried out was analyzed. To solve the problem, a valid prototype of a measuring device with hardware and software was developed. The mathematical algorithms were also using a software-implemented simulator are proposed and tested. The results of tests on a natural bench with the possibility of open access to the section, which made it possible to ensure the verification of the obtained data by direct measurements, are presented. It was revealed that the existing methods for measuring ovality of large diameters from the outside do not allow to determine distortions of the profile with high accuracy.
{"title":"Definition of ovality\u0000and profile of pipes and cylindrical parts of large diameter on external surface","authors":"S. V. Antipov, D. Zhukov, A. Abashkin, S. Konovalov","doi":"10.36652/0202-3350-2021-22-01-09-14","DOIUrl":"https://doi.org/10.36652/0202-3350-2021-22-01-09-14","url":null,"abstract":"The work is devoted to the problem of determining the ovality and distortion of the profile of pipes and other parts of a\u0000cylindrical shape with diameters from 1 to 2 meters when accessing only the external surface. Existing methods for determining\u0000diameters and ovality of parts was carried out was analyzed. To solve the problem, a valid prototype of a measuring\u0000device with hardware and software was developed. The mathematical algorithms were also using a software-implemented\u0000simulator are proposed and tested. The results of tests on a natural bench with the possibility of open access to the section,\u0000which made it possible to ensure the verification of the obtained data by direct measurements, are presented. It was\u0000revealed that the existing methods for measuring ovality of large diameters from the outside do not allow to determine\u0000distortions of the profile with high accuracy.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124644003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.36652/0202-3350-2021-22-01-20-29
M. Shishkarev
It is shown that to obtain a load characteristic corresponding to an ideal adaptive friction coupling of the second generation, the value of the spacer force must have the greatest increase in a certain initial range of friction coefficient values, and the value of the torque of the friction pairs of the main friction group must decrease linearly in the range of friction coefficient values.
{"title":"Elements of the theory of adaptive friction couplingsof the\u0000second generation","authors":"M. Shishkarev","doi":"10.36652/0202-3350-2021-22-01-20-29","DOIUrl":"https://doi.org/10.36652/0202-3350-2021-22-01-20-29","url":null,"abstract":"It is shown that to obtain a load characteristic corresponding to an ideal adaptive friction coupling of the second generation,\u0000the value of the spacer force must have the greatest increase in a certain initial range of friction coefficient values,\u0000and the value of the torque of the friction pairs of the main friction group must decrease linearly in the range of friction\u0000coefficient values.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114728046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.36652/0202-3350-2021-22-01-35-39
I. F. D’yakov, Y. Moiseev
The method of refining the power factors of a machine-building structure presented in the form of a shell is described. The stability of a thin-walled shell is analyzed using a system of equilibrium equations taking into account changes in its shape. The concept of shell stability is considered for generalized forces. The estimation of the accuracy of the metal structure calculation is justified by solving several problems using the finite element method. The calculation error for various finite elements is determined.
{"title":"Analysis of force factors of a thin-walled shell\u0000metalworks","authors":"I. F. D’yakov, Y. Moiseev","doi":"10.36652/0202-3350-2021-22-01-35-39","DOIUrl":"https://doi.org/10.36652/0202-3350-2021-22-01-35-39","url":null,"abstract":"The method of refining the power factors of a machine-building structure presented in the form of a shell is described.\u0000The stability of a thin-walled shell is analyzed using a system of equilibrium equations taking into account changes in its\u0000shape. The concept of shell stability is considered for generalized forces. The estimation of the accuracy of the metal\u0000structure calculation is justified by solving several problems using the finite element method. The calculation error for\u0000various finite elements is determined.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129316836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.36652/0202-3350-2021-22-01-15-19
M. Migranov, A. Migranov
The results of theoretical and experimental studies of tribological characteristics of composite multilayer coatings for cutting tools for blade processing by milling are presented. Installed reducing the coefficient of friction, longer tool life and reduced thermal loading of the cutting zone in milling operations with the use of wear-resistant coatings.
{"title":"Composite multi-layer coatings for end mills","authors":"M. Migranov, A. Migranov","doi":"10.36652/0202-3350-2021-22-01-15-19","DOIUrl":"https://doi.org/10.36652/0202-3350-2021-22-01-15-19","url":null,"abstract":"The results of theoretical and experimental studies of tribological characteristics of composite multilayer coatings for\u0000cutting tools for blade processing by milling are presented. Installed reducing the coefficient of friction, longer tool life and\u0000reduced thermal loading of the cutting zone in milling operations with the use of wear-resistant coatings.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"8 Suppl 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124182970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.36652/0202-3350-2021-22-01-30-34
V. F. Bezjazychnyi, M. Prokofiev, F.R. Zhirnova
The method of calculating the strength of the joint with tension taking into account the technological conditions for processing the mating surfaces, which determine the quality indicators of the surface layer of the material of these surfaces: the surface roughness and the degree of their hardening, was described.
{"title":"Calculated determination of\u0000strength characteristics of assembly joints with tightness taking into account the\u0000technological conditions for processing the surfaces","authors":"V. F. Bezjazychnyi, M. Prokofiev, F.R. Zhirnova","doi":"10.36652/0202-3350-2021-22-01-30-34","DOIUrl":"https://doi.org/10.36652/0202-3350-2021-22-01-30-34","url":null,"abstract":"The method of calculating the strength of the joint with tension taking into account the technological conditions for processing\u0000the mating surfaces, which determine the quality indicators of the surface layer of the material of these surfaces:\u0000the surface roughness and the degree of their hardening, was described.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128375826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.36652/0202-3350-2021-22-01-40-43
N. Kurlaev, Zh. V. Samokhvalova, V. Samokhvalov
The main provisions of the calculation method and the results of numerical modeling of the process of compression of the tubular shell of the tip onto a stranded wire by the pressure of a pulsed magnetic field are presented. The analysis of the features of the deformation process at different intensity of force loading is carried out. The rational modes of loading and the necessary conditions for minimizing the specific discharge energy while ensuring a high assembly density are determined.
{"title":"Calculation of the\u0000parameters of the magnetic-pulse connection of the tip and multi-wire cable","authors":"N. Kurlaev, Zh. V. Samokhvalova, V. Samokhvalov","doi":"10.36652/0202-3350-2021-22-01-40-43","DOIUrl":"https://doi.org/10.36652/0202-3350-2021-22-01-40-43","url":null,"abstract":"The main provisions of the calculation method and the results of numerical modeling of the process of compression of\u0000the tubular shell of the tip onto a stranded wire by the pressure of a pulsed magnetic field are presented. The analysis of\u0000the features of the deformation process at different intensity of force loading is carried out. The rational modes of loading\u0000and the necessary conditions for minimizing the specific discharge energy while ensuring a high assembly density are\u0000determined.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127334445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.36652/0202-3350-2021-22-01-03-08
A. Koloskov, V.V. Esaulov, T.E. Rozhko, A. Shishlov
The article presents the results of a study of the influence of vibration and shock effects on the adhesive properties of the silicone sealant "Elasil 137-180". The possibility of its reception for fixing the protective tubes of light guides in the device is shown.
{"title":"Investigation of adhesion\u0000properties of silicone sealant “Elasil 137-180”","authors":"A. Koloskov, V.V. Esaulov, T.E. Rozhko, A. Shishlov","doi":"10.36652/0202-3350-2021-22-01-03-08","DOIUrl":"https://doi.org/10.36652/0202-3350-2021-22-01-03-08","url":null,"abstract":"The article presents the results of a study of the influence of vibration and shock effects on the adhesive properties\u0000of the silicone sealant \"Elasil 137-180\". The possibility of its reception for fixing the protective tubes of light guides in the\u0000device is shown.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116859933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-01DOI: 10.36652/0202-3350-2020-21-12-552-557
M. Shishkarev
It is shown that the maximum torque of adaptive friction clutches of the second generation (baseline) when it is configured with the minimum coefficient of friction less than the setting based on an average coefficient of friction, if a ratio of the coefficient of friction to its minimum value more than the value of the safety factor.
{"title":"Influence of the second-generation adaptive friction clutch\u0000configuration method (basic version) for its maximum load","authors":"M. Shishkarev","doi":"10.36652/0202-3350-2020-21-12-552-557","DOIUrl":"https://doi.org/10.36652/0202-3350-2020-21-12-552-557","url":null,"abstract":"It is shown that the maximum torque of adaptive friction clutches of the second generation (baseline) when it is\u0000configured with the minimum coefficient of friction less than the setting based on an average coefficient of friction, if a ratio\u0000of the coefficient of friction to its minimum value more than the value of the safety factor.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"200 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122564225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-01DOI: 10.36652/0202-3350-2020-21-12-566-570
Е.А. Dubovik
A kinematic calculation of technological design transfer case changes gear of the truck MZKT-500200 was carried out. The disadvantage of this design is the need to completely stop the car to lock the differential, which is eliminated by installing a friction clutch on the output shaft.
{"title":"Manufacturability of the design of the transfer case of the truck\u0000MZKT-500200","authors":"Е.А. Dubovik","doi":"10.36652/0202-3350-2020-21-12-566-570","DOIUrl":"https://doi.org/10.36652/0202-3350-2020-21-12-566-570","url":null,"abstract":"A kinematic calculation of technological design transfer case changes gear of the truck MZKT-500200 was carried\u0000out. The disadvantage of this design is the need to completely stop the car to lock the differential, which is eliminated by\u0000installing a friction clutch on the output shaft.","PeriodicalId":212628,"journal":{"name":"Assembling in Mechanical Engineering and Instrument-Making","volume":"27 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114124531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：