Increasing the load capacity of ball-and-screw transmissions by improved assembly

Iznairov, B. M.; Iznairov, O. B.; Vasin, A. N.

doi:10.3103/s1068798x11010084

Russ. Engin. Res.

2011

DOI: 10.3103/s1068798x11010084

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Increasing the load capacity of ball-and-screw transmissions by improved assembly

B. M. Iznairov

O. B. Iznairov

A. N. Vasin

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Cited by 3 publications

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“…In connection with these design issues, methods of calculation, development of ways to improve the transmission of screw-nut rolling, a lot of attention has recently been paid [1,[10][11][12].…”

mentioning

confidence: 99%

Impact of manufacturing errors of ball screw system on performance characteristics

Denisenko

2018

MATEC Web Conf.

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To convert rotary motion into translational motion in modern metal-cutting machine tools, screw-nut rolling transmissions are widely used. Special requirements are placed on the stability of the operational characteristics of the screw-nut rolling transmission. The influence of the accuracy of manufacturing screw-nut transmission on the main transmission characteristics: axial stiffness and the moment of idling is considered. When analyzing the quality of the manufacture of the transmission, the following manufacturing errors were taken into account: the pitch errors of the screw and nut threads; errors in thread diameter of screw and nut; deviation of the thread profile of the screw and nut; the error of the diameter of the ball. Since these errors are independent random variables, on the basis of the basic propositions of the theory of probability, analytical dependencies were obtained to determine the coefficients connecting the variances of the design parameters and the variance of the probabilistic distribution of the axial force and the idling torque. Based on the calculation results from the obtained dependencies, it was concluded that the errors in the thread pitch of the screw and nut have a prevailing influence on the dispersion of the probabilistic distribution of the axial force (and, consequently, the axial stiffness) and the idling torque. The results obtained allow us to outline further ways of improving the transmission of the screw-nut rolling.

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mentioning

confidence: 99%

Impact of manufacturing errors of ball screw system on performance characteristics

Denisenko

2018

MATEC Web Conf.

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Improving the Assembly of Ballscrews Using Analysis of Interactions between the Working Parts

Iznairov

Korolev

Королев

2016

Procedia Engineering

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On the Results of Investigating the Efficiency of Ball Screws with Separators

Abdulin¹,

Bolshakov²,

Podshibnev

et al. 2022

HoBMSTU.SME

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Extensive use of ball screws with separators is due to manufacturing simplicity and increased reliability as compared to ball screws with recirculating rolling elements. The issues of determining the efficiency of such mechanisms have not been sufficiently studied. The paper presents analytically derived primary dimension ratios for parts of ball screws with separators, taking into account those tolerances that should be observed to ensure that the mechanism assembly is guaranteed and the preloads affecting the breakaway forces and the mechanism efficiency are prevented. We provide guidelines for designing parts of ball screws with separators. We plotted the interacting forces in the parts constituting ball screws with separators and analytically determined the efficiency of such mechanisms as a function of contact angles and lead angles. The experimental investigation results concerning electro-mechanical drive prototypes based on ball screws confirm the analytical expressions obtained. Adhering to the dimension ratios proposed for parts of ball screws with separators reveals that the analytically and experimentally determined efficiency values converge. Using the efficiency plots presented for ball screws with separators while designing electromechanical drives is appropriate to assess energy losses in mechanical transmissions

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Increasing the load capacity of ball-and-screw transmissions by improved assembly

Cited by 3 publications

References 0 publications

Impact of manufacturing errors of ball screw system on performance characteristics

Impact of manufacturing errors of ball screw system on performance characteristics

Improving the Assembly of Ballscrews Using Analysis of Interactions between the Working Parts

On the Results of Investigating the Efficiency of Ball Screws with Separators

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