Results 261 to 270 of about 73,235 (301)

Method for measuring clearances in precision joints

Measurement Techniques, 1964
1. This instrument can be used in combination with an actuating device for effective control in fitting diameters of one of the conjugate components to the other by a method similar to that described in [3] or [4]. 2. The design of the clearance testing instrument (see Figure) provides the possibility of testing the clearance (or fit ...
N. D. Lebedyanskaya, K. G. Filatov
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Accuracy Analysis of General Parallel Manipulators with Joint Clearance

Proceedings 2007 IEEE International Conference on Robotics and Automation, 2007
Due to the joint clearance, parallel manipulators always exhibit some position and orientation errors at the mobile platform. This paper aims to provide a systematic framework for the error analysis problem of general parallel mechanisms influenced by the joint clearance.
Jian Meng, Dongjun Zhang, Tinghua Zhang, Hong Wang, Zexiang Li 0001   +4 more
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Modeling 3D revolute joint with clearance and contact stiffness

Nonlinear Dynamics, 2011
The clearances in the kinematic joints are due to deformations, wear, and manufacturing errors; the accurate modeling of these effects in multibody analysis is a complex issue but in many practical applications, it is mandatory to take into them into account in order to understand the actual behavior of mechanical systems.
BRUTTI, CARLO, Coglitore, G, VALENTINI, PIER PAOLO   +2 more
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Dynamic simulaion of multibody system with planar clearance joint

Proceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology, 2011
A tribological analysis scheme for multibody system with clearance joints is presented by integrating frictional contact model, wear calculation with multibody dynamics. Clearance joints are modeled as a continuous contact model with friction. Progressive wear process is simulated by a widely used a finite-element-based iterative scheme.
Shoufeng Jin, Yuewen Su
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Constitutive Equations for Joints with Clearance

2005
The small displacements notion is widely used in tolerancing, particularly to describe the kinematics of joints with clearance. But this purely geometrical approach does not take into account the joint forces description. Our paper aims at examining the consequences of such an approach on the forces representation.
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Extending the life of bolt joints with radial clearance

Russian Engineering Research, 2012
A method of extending the life of joints with radial clearance by preliminary deformation of the bolts is proposed.
V. V. Dunaev, A. A. Shirshov
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Analysis of clearance fit pin joints

International Journal of Mechanical Sciences, 1978
The analysis of clearance fit joints falls within the realm of mixed boundary problems with moving boundaries. In this paper, this problem is solved by a simple continuum method of analysis applying an inverse technique; the region of contact is specified and the corresponding causative load is evaluated.
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Multi-objective Optimization of Mechanisms with Clearances in Revolute Joints

2014
Despite extensive work on the evaluation of the dynamic performances of various mechanisms and multi-body mechanical systems with revolute joint clearances, limited work has been conducted in optimizing the performances of these systems. A multi-objective optimization technique is presented to examine and to quantify the effect of combined objective ...
Zhang, Z., Xu, L., Tay, Y.Y., Flores, Paulo, Lankarani, H.   +4 more
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Effect of Bearing Clearance on Cardan-Joint Kinematics

15th Design Automation Conference: Volume 3 — Mechanical Systems Analysis, Design and Simulation, 1989
Abstract The effect of radial bearing clearance at the intermediate joints of a Cardan-type universal joint has been investigated. It is found that errors in displacement at the output and also intermediate joints occur, and that their amplitudes have a linear relationship to the magnitudes of the radial bearing clearances.
I. S. Fischer, M. C. Liu
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Uncertainty Analysis of Planar Robots With Joint Clearance

Volume 5: 6th Flexible Assembly Conference, 1998
Abstract Joint clearance in mechanisms and robots leads to uncertainty in function deviation. Unlike the impact of the link tolerance on the performance quality, the uncertain effect of the joint clearance to the performance can not be eliminated by calibration because of the random nature. In this paper, based on the probability theory,
Jianmin Zhu, Kwun-Lon Ting
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