A new analytical method for press-fit curve prediction of interference fitting parts

Wang, Xingyuan; Lou, Zhifeng; Xu, Chonglin

doi:10.1016/j.jmatprotec.2017.06.022

Cited by 32 publications

(33 citation statements)

References 11 publications

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“…Scholars at home and abroad have made extensive researches on the corresponding problems of interference fit connection of peg-holes, and have achieved certain results. Zhang et al(2000) used the finite element method to analyze the stress in the interference connection of the peg-hole (Doležel et al 2014 andWang et al 2017). This method has the quantitative advantage compared with the traditional design method.…”

Section: Contact Stress Analysis Of Disc Cutter Peg-hole With Interfementioning

confidence: 99%

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Contact stress analysis of disc cutter peg-hole with interference fit

Zhang

et al. 2019

Transactions of the Canadian Society for Mechanical Engineering

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To study the relation of the interference fit between cutter body and cutter ring, a theoretical design of interference fit of the cutter peg-hole is carried out according to the theory of thick-walled cylinders. The finite element method is used to analyzed the mapping relationship between the contact stress of cutter ring and cutter body. Thermal expansion assembly of the cutter ring is simulated, and the temperature of the thermal expansion assembly of the cutter ring is determined. The result shows that the contact length between the cutter body and the cutter ring has little influence on the contact stress of the cutter ring, but with increasing contact length the stress concentration of the retaining ring will increase. The contact stress of the cutter ring is basically the same at the same amount of interference and temperature, but the contact stress of the ring decreases with increasing contact length at high temperature. When the contact length is the same, the contact stress and the radial force of the mating surface increase with increasing amount of interference. The reasonable temperature for thermal expansion assembly of the cutter ring is 160 °C.

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Section: Contact Stress Analysis Of Disc Cutter Peg-hole With Interfementioning

confidence: 99%

“…According to the thick walled cylinder theory(TCT) (Wang et al 2017), the minimum effective interference value of the cutter ring and cutter body without sliding is calculated when the disc cutter is working normally (Feng et al 2017;Nie 2014;Martin et al 2014). As follow:…”

Section: Min Pmentioning

confidence: 99%

Contact stress analysis of disc cutter peg-hole with interference fit

Zhang

et al. 2019

Transactions of the Canadian Society for Mechanical Engineering

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“…To avoid the influence of resistant force, the increment of the pressing force was used [15]. Therefore, the friction coefficients of these two interfaces were calculated, and the value is 0.09.…”

Section: Determination Of Reasonable Range Of Forcedisplacement Curvesmentioning

confidence: 99%

Precision assembly method of a kind of small interference fitting parts

Lou

Wang

et al. 2019

Sādhanā

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Interference fitting parts are widely used in many engineering applications. Press-fit method is commonly used for assembling interference fitting parts, but most of press-fit instruments cannot meet assembly requirements of small precision parts for poor accuracies of positioning, alignment and pressing displacement's measurement. In this paper, the press-fit method of a kind of small precision interference fitting parts was introduced. In order to achieve a reasonable assembly of the interference fitting parts, the influence of aligning error and positioning error on assembly accuracies were analyzed by finite element method (FEM). Furthermore, the relation between pressing force and displacement were also analyzed to obtain a reasonable range of force-displacement curves, which can be used for assembly quality estimation. An automatic press-fit instrument was developed. Through analyzing relation between pressing force and the instrument's elastic deformation, press-fit displacement error was compensated to increase assembly accuracy. A kind of machine vision device with upper and lower CCDs was used to detect relative situation of parts, and calibration method of the machine vision device was proposed. The assembly experiments showed that press-fit force-displacement curve was consistent with the predicted values. The parts' relative position deviation was less than ±5 lm, and parallelism deviation was less than 10 lm, which meet the requirements of the assembly accuracy index.

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“…Wang et al. 23 proposed a new analytical method to predict the press fit curve accurately for interference fitted parts. The method shows consistent agreement with experimental data.…”

Section: Introductionmentioning

confidence: 99%

Combined effect of cylindricity, roundness and roughness on axial load-carrying ability of interference fits

Raj

Bhatti

Dhanish

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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Interference fits are commonly used in engineering for various applications. While the effect of many factors on the load-carrying ability of interference fits has been studied extensively, the combined effect of cylindricity, roundness and roughness does not appear to have been considered to that extent, and this paper is an attempt to remedy the situation. As a first step, finite element method was used to verify that there will be a reduction in the load-carrying ability due to the introduction of perfect geometrical deviations on the shaft. Thereafter, a detailed experimental investigation was carried out to study the effect of cylindricity and their joint effect with various other factors on the axial load-carrying ability of shaft–bearing interference fitted assemblies. A number of shafts of C40 steel of nominal diameter 20 mm were manufactured with varying cylindricity values and selectively assembled with standard deep grove ball bearings, thereby achieving interference fits with a grade of H7/u6 between them. The assembled specimens were tested on a Universal Testing Machine with a specially made fixture and the maximum extraction load determined. The effect of the various factors on the extraction load was examined using statistical methods. It was found that shaft cylindricity error did reduce the load-carrying ability of interference fits. The combination of interference, cylindricity and surface roughness was found to give the best prediction for extraction load. Certain other parameters were also examined, but they were not found significant.

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A new analytical method for press-fit curve prediction of interference fitting parts

Cited by 32 publications

References 11 publications

Contact stress analysis of disc cutter peg-hole with interference fit

Contact stress analysis of disc cutter peg-hole with interference fit

Precision assembly method of a kind of small interference fitting parts

Combined effect of cylindricity, roundness and roughness on axial load-carrying ability of interference fits

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