Automating the interference fit process

1990 ◽  
Vol 10 (4) ◽  
pp. 195-199 ◽  
Author(s):  
H.J. Warnecke ◽  
R.‐D. Schraft ◽  
M. Schweizer ◽  
G. Wurtz
Keyword(s):  
Interference Fit ◽  
Interference Fit Process

Interference fit process development for the ITER Vacuum Vessel Gravity Support mock-up fabrication

2019 ◽  
Vol 146 ◽  
pp. 1907-1911
Author(s):  
Jason Cheon ◽  
Chulkyu Park ◽  
Hokyu Moon ◽  
Woo-Ho Chung ◽  
Hyun-Soo Kim ◽  
...  
Keyword(s):  
Process Development ◽  
Vacuum Vessel ◽  
Interference Fit ◽  
Interference Fit Process

The Process Research and Numerical Simulation of Composite Roll

2016 ◽  
Vol 693 ◽  
pp. 520-526
Author(s):  
Qing Yu ◽  
Ya Feng He
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Steel Industry ◽  
Cost Savings ◽  
Maximum Amount ◽  
Process Research ◽  
Element Calculation ◽  
Interference Fit ◽  
Interference Fit Process ◽  
Important Significance

Due to obtain good mechanical properties and cost savings etc. composite roll is widely used in rolling steel industry. It is important significance for composite roll interference fit to study because assembly interference fit between roller sleeve and mandrel affect directly the performance of composite roll. In paper the calculation format of interference fit is obtained by deriving theoretically the interference fit process of composite rollers roller sleeve and mandrel. At the same time, the numerical calculation of the maximum amount of interference between roller sleeve and mandrel is done by finite element method, the results show that the theoretical calculation and finite element calculation are basically consistent, thus provide a theoretical and design for composite roll designer and has important practical value.

Interference Fit Assembly of Micro-Parts Based on Microscopic Vision and Force

2015 ◽  
Vol 645-646 ◽  
pp. 1016-1023 ◽  
Author(s):  
Juan Zhang ◽  
Wen Rong Wu ◽  
Fei Shen ◽  
Yong Jun Deng
Keyword(s):  
Contact Force ◽  
Control Strategy ◽  
Interaction Force ◽  
Alignment Error ◽  
Assembly Process ◽  
Interference Fit ◽  
Micro Parts ◽  
Pose Alignment ◽  
Contact Position ◽  
Interference Fit Process

To assemble easily damaged micro-parts safely in interference fit way, the assembly process is designed and the interaction force in assembly process is analyzed. The pose of micro-parts is aligned based on calibration of three microscopic vision systems from different directions. In addition, a control strategy based on feedback of vision and force is proposed to assemble safely. In the case of two micro-parts just contact, position of micro-part is adjusted based on force information to compensate pose alignment error and keep force in safe range. When micro-part is deformed as increased contact force, position of micro-part is adjusted based on force in the interference fit process and deformation of micro-part. Experimental results demonstrate the effectiveness of proposed methods.

Crack repair of SENT specimen using the interference fit process

2018 ◽  
Vol 748 ◽  
pp. 363-374 ◽  
Author(s):  
Ahmed Bahloul ◽  
Mohamed Maki Mhalla ◽  
CHokri Bouraoui
Keyword(s):  
Interference Fit ◽  
Crack Repair ◽  
Interference Fit Process

Finite Element Simulation of Tire-Rim Interface

1989 ◽  
Vol 17 (4) ◽  
pp. 305-325 ◽  
Author(s):  
N. T. Tseng ◽  
R. G. Pelle ◽  
J. P. Chang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Finite Element Simulation ◽  
Contact Pressure ◽  
Element Model ◽  
Experimental Measurements ◽  
Inflation Pressure ◽  
Interference Fit ◽  
Element Simulation ◽  
Rubber Composite

Abstract A finite element model was developed to simulate the tire-rim interface. Elastomers were modeled by nonlinear incompressible elements, whereas plies were simulated by cord-rubber composite elements. Gap elements were used to simulate the opening between tire and rim at zero inflation pressure. This opening closed when the inflation pressure was increased gradually. The predicted distribution of contact pressure at the tire-rim interface agreed very well with the available experimental measurements. Several variations of the tire-rim interference fit were analyzed.

ON THE INTERACTION OF A VISCOELASTIC CYLINDRICAL PIPE WITH INNER UNIFORM COATING AND INSERTS WITH A COMPLEX PROFILE

2020 ◽  
Author(s):  
Kirill Kazakov
Keyword(s):  
Complex Shape ◽  
High Accuracy ◽  
Contact Stresses ◽  
Basis Functions ◽  
Complex Profile ◽  
Cylindrical Pipe ◽  
Interference Fit ◽  
Uniform Coating ◽  
Special Basis ◽  
Insert Region

This work is devoted to the formulation and construction of an analytical solution to the problem of contact between a cylindrical viscoelastic aging pipe with an internal thin coating and an insert having a complex shape placed inside the pipe with an interference fit. In practice, the presence of such coatings is required, for example, to protect the main structure from aggressive external or internal environments, for its electrical insulation, etc. The manufacturing process of the inner coating determines its possible heterogeneity (dependence of properties on coordinates). An insert placed inside a pipe can have a complex profile that has a rapidly changing function. Taking these features into account is important when analyzing the stress-strain state of pipes with an internal coating. Using an approach based on the use of special basis functions and the type of solution, a representation for the contact stresses in the pipe in the region of the rigid insert is obtained. This approach makes it possible to distinguish functions that describe the properties of the inner coating and the shape of the outer profile of the insert in the form of separate terms and factors in the expression for the contact stresses in the insert region. Therefore, in order to achieve high accuracy when carrying out calculations, it is sufficient to restrict ourselves to a relatively small number of terms

Interest interchangeability of planting with an interference fit

2020 ◽  
pp. 41-44
Author(s):  
M.N. Erokhin ◽  
O.A. Leonov ◽  
N.Zh. Shkaruba ◽  
Yu.V. Kataev ◽  
Yu.G. Vergazova
Keyword(s):  
Interference Fit ◽  
Theoretical Substantiation

The theoretical substantiation of the method of relative interchangeability in cylindrical joints with preload is given. Examples of connection of shafts with a repairable defect and parts with holes with an irrepairable defect and on the contrary at maintaining of required accuracy of joint on limiting preload are given. Keywords interchangeability, tolerance, size, fit, preload, repairable and irrepairable defect [email protected]

Effect of design parameters on stresses occurring at the tooth root in a spur gear pressed on a shaft

2021 ◽  
pp. 095440892199529
Author(s):  
Fatih Güven
Keyword(s):  
Internal Pressure ◽  
Tangential Stress ◽  
Spur Gear ◽  
Design Parameters ◽  
Interference Fit ◽  
Gear Design ◽  
Compact Design ◽  
Fit Tolerance ◽  
Moderate Stress ◽  
Good Agreement

Gears are commonly used in transmission systems to adjust velocity and torque. An integral gear or an interference fit could be used in a gearbox. Integral gears are mostly preferred as driving gear for a compact design to reduce the weight of the system. Interference fit makes the replacement of damaged gear possible and re-use of the shaft compared to the integral shaft. However, internal pressure occurs between mating surfaces of the components mated. This internal pressure affects the stress distribution at the root and bottom land of the gear. In this case, gear parameters should be re-considered to assure gear life while reducing the size of the gear. In this study, interference fitted gear-shaft assembly was examined numerically. The effects of rim thickness, profile shifting, module and fit tolerance on bending stress occurring at the root of the gear were investigated to optimize gear design parameters. Finite element models were in good agreement with analytical solutions. Results showed that the rim thickness of the gear is the main parameter in terms of tangential stress occurring at the bottom land of the gear. Positive profile shifting reduces the tangential stress while the pitch diameter of the gear remains constant. Also, lower tolerance class could be selected to moderate stress for small rim thickness.

scholarly journals Simulative investigation of ring creep on a planetary bearing of a wind turbine gearbox

2021 ◽  
Author(s):  
Jonas Gnauert ◽  
Felix Schlüter ◽  
Georg Jacobs ◽  
Dennis Bosse ◽  
Stefan Witter
Keyword(s):  
Experimental Data ◽  
Finite Element Method ◽  
Sensitivity Analysis ◽  
Planetary Gear ◽  
The Finite Element Method ◽  
Relative Movement ◽  
Wind Turbine Gearbox ◽  
Interference Fit ◽  
Planetary Gears ◽  
Module Coefficient

AbstractWind turbines (WT) must be further optimized concerning availability and reliability. One of the major reasons of WT downtime is the failure of gearbox bearings. Some of these failures occur, due to the ring creep phenomenon, which is mostly detected in the planetary bearings. The ring creep phenomenon describes a relative movement of the outer ring to the planetary gear. In order to improve the understanding of ring creep, the finite element method (FEM) is used to simulate ring creep in planetary gears. First, a sensitivity analysis is carried out on a small bearing size (NU205), to characterize relevant influence parameters for ring creep—considered parameters are teeth module, coefficient of friction, interference fit and normal tooth forces. Secondly, a full-scale planetary bearing (SL185030) of a 1MW WT is simulated and verified with experimental data.

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