Decomposition analysis and peak stagger design for Crank-triangular linkage-elbow mechanism of mechanical servo presses

IF 1.2 4区工程技术 Q3 ENGINEERING, MECHANICAL

Mechanics & Industry Pub Date : 2021-01-01 DOI:10.1051/meca/2021042

Y. Sun, J. Hu, Lian Wei, Yongqi Chen

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引用次数: 2

Abstract

High mechanical advantage as well as low and steady slide speed within the working stroke Sn are the fundamental requirements for the working mechanism of servo-mechanical press. Currently, the Crank-Triangular Linkage-Elbow (CTLE) mechanism has attracted more and more attention from researchers and manufacturers of servo presses. This paper presents a new analysis and design method of CTLE. The mechanism is decomposed into two sub-units: crank and triangular-linkage elbow, followed by the kinematic and force analysis of each sub-unit. The influences of each structural parameter on the working performance are obtained and can be used as the basis for preliminary design. Through the offset design, the mechanical advantage peaks of the two units, MA1max and MA2max, do not occur at the same time: MA1max is located near Sn, while MA2max is just at BDC (Bottom Dead Center). Because the mechanical advantage of the whole mechanism is the product of the two subunits, the designed mechanism can obtain high and steady mechanical advantage together with low and steady slide speed within Sn. After preliminary design, the scheme can be further modified by numerical simulation and optimization. Hence the design efficiency can be improved.

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伺服压力机曲柄-三角连杆-弯头机构的分解分析及峰值错动设计

高的机械优势和在工作行程Sn内低而稳定的滑动速度是伺服机械压力机工作机构的基本要求。目前，曲柄-三角连杆-弯头(CTLE)机构越来越受到伺服压力机研究者和制造商的关注。本文提出了一种新的CTLE分析与设计方法。将机构分解为曲柄和三角连杆弯头两个子单元，并对每个子单元进行运动学和受力分析。得到了各结构参数对工作性能的影响，可作为初步设计的依据。通过偏置设计，MA1max和MA2max两个单元的机械优势峰值不会同时出现:MA1max位于Sn附近，而MA2max刚好位于BDC (Bottom Dead Center)。由于整个机构的机械优势是两个亚单元的乘积，因此设计的机构可以在Sn范围内获得高而稳定的机械优势和低而稳定的滑动速度。初步设计完成后，可通过数值模拟和优化对方案进行进一步修改。从而提高了设计效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mechanics & Industry ENGINEERING, MECHANICAL-MECHANICS

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： An International Journal on Mechanical Sciences and Engineering Applications With papers from industry, Research and Development departments and academic institutions, this journal acts as an interface between research and industry, coordinating and disseminating scientific and technical mechanical research in relation to industrial activities. Targeted readers are technicians, engineers, executives, researchers, and teachers who are working in industrial companies as managers or in Research and Development departments, technical centres, laboratories, universities, technical and engineering schools. The journal is an AFM (Association Française de Mécanique) publication.