Study on Contact Stress of Cylinder Gear and Tooth Profile Modification of Offset Press
The cylinder gear is an important part of offset press. It has great significance to ensure the speed of the cylinder gear constant and stable. In this paper, the finite element analysis software ANSYS is used to analyze the gear tooth deformation on infl
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Study on Contact Stress of Cylinder Gear and Tooth Profile Modification of Offset Press Qiumin Wu, Min Feng and Jimei Wu
Abstract The cylinder gear is an important part of offset press. It has great significance to ensure the speed of the cylinder gear constant and stable. In this paper, the finite element analysis software ANSYS is used to analyze the gear tooth deformation on influence of gear meshing transmission performance, and it comes to the conclusion that the gear before modification exists interference and stress concentration phenomenon. Adopting a method of cylinder gear–tooth profile modification for gear tooth, it shows that the gear tooth interference and the stress concentration phenomenon disappear after the modification, the gear-bearing capacity is greatly improved, and the gear runs more smoothly. Keywords Contact stress
Profile modification Finite element
In offset printing, the cylinder is derived by the cylinder gear. The printing image is transferred by rolling of plate cylinder and blanket cylinder, and blanket cylinder and impression cylinder. Therefore, the primary conditions to get the high printing quality, with the uniform ink layer and clear images and dot, is to ensure gear transmission uniform, stable, and synchronization, and the cylinder gear must be in high-precision engagement state in the process of movement. However, there is gear tooth deformation under load in the practical work. In gear teeth meshing, the actual position and shape deviate from the theoretical position and shape because of the deformation, which destroy the correct meshing condition theory, and make the engaging position deviate from theoretic meshing line. It causes instantaneous transmission ratio fluctuation of gear, forces the gear non-uniform speed, and causes vibration, shock, and noise of gear transmission system, and that will aggravate the fluctuation amplitude of gear tooth dynamic meshing force. Then, the Q. Wu (&) M. Feng J. Wu Institute of Printing and Packing Engineering, Xi’an University of Technology, Xi’an, China e-mail: [email protected] M. Feng e-mail: [email protected] J. Wu e-mail: [email protected] © Springer Science+Business Media Singapore 2016 Y. Ouyang et al. (eds.), Advanced Graphic Communications, Packaging Technology and Materials, Lecture Notes in Electrical Engineering 369, DOI 10.1007/978-981-10-0072-0_83
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transmission accuracy of gear transmission system reduces, even the whole machine cannot work normally. In this paper, the contact analysis module of ANSYS software is used to analyze the gear tooth deformation effect on gear meshing transmission performance and then select a gear modification program to optimize the drum gear to reduce the tooth deformation effect on gear transmission performance.
83.1
Finite Element Contact Analysis of the Cylinder Gear Meshing Model
83.1.1 The Establishment of the Cylinder Gear Solid Model In this paper, the J2108-type offset press blanket cylinder gear and impression cylinder gear are selected as the sampl
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