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Machine Structure Desigen and Performance Analysis of Planar Double-Enveloping Hourglass Worm Processing Special Machine

Author: LiWenHua
Tutor: WuFengHe
School: Yanshan University
Course: Mechanical Manufacturing and Automation
Keywords: Worm Generating cutting Structural Design Dynamic Analysis Thermal Characteristics
CLC: TG502
Type: Master's thesis
Year: 2011
Downloads: 53
Quote: 0
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Abstract


Since the worm gear inception , has been in the field of heavy machinery drives are widely used , but this worm in the actual machining process is very prone to the phenomenon of uneven tooth thickness , resulting in worm and worm wheel is not properly engaged , the running- worm gear shape distortion , causing the transmission is not smooth, reduced carrying capacity and other issues . In order to improve wormgearing machining precision and scope , this article is designed according to the principle Fan into a worm CNC machine tools , the machine dynamics and thermal characteristics for analysis, the heat source for the machining accuracy of the law , to reduce the thermal deformation of the machine to improve machining accuracy provides a theoretical basis . Data based on differential geometry theory and matrix theory , derived plane double enveloping worm tooth surface contact line equations and equations ; Analysis of Planar Double Enveloping Hourglass Worm forming mechanism , based on a principle -based norm proposed the worm drive CNC machine tools program analyzes the basic movement of the machine , and the machine tool main drive and feed drive for the structural design and check . UG established machine tool using three-dimensional solid model of the machine dynamics finite element analysis, and key components of the machine tool and the workpiece in the natural frequency periodic excitation force of the response curve . Based on analysis of the theory of heat transfer machine main heat source , and the main heat source heat machine was calculated ; headstock of the machine , and the machine feeding system for thermal characterization, thermal deformation distribution obtained by heat - structure coupling analysis, the thermal deformation of machine tool and precision of the machine rules .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > General issues > Machine tool design, manufacture and maintenance
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