Assembly information modelling and sequences generation algorithm of autobody

This paper attempts to formalise the assembly information of autobody and solve all feasible assembly sequences. In this paper, an assembly information model is built by using polychromatic sets and the mathematic forms of these models are given. The model is described by locating relation equations which express the constrained relationship of locating and displacement interference equations which express the constrained relationship of possible displacement. At first, the assembly information model is used to model the assembly information of autobody; then according to locating relation equations and displacement interference equations, all feasible assembly sequences can be derived. Finally, a case study illustrates the application of the proposed assembly information model. The proposed assembly information model and sequences generation approach is successfully demonstrated by autobody assembly planning, and could facilitate assembly sequence optimisation under a robust and reliable situation.     

C和汇编之间参数传递机制剖析

本文剖析了混合编程转返机制和参数传递的基本方法。     

The Mexican-Japanese-US Model for Auto Assembly in Northern Mexico

Abstract

The automobile stamping and assembly plant in Hermosillo, Mexico is world class in productivity and quality. We analyze the process of integrating the Mexican workforce with the Japanese-designed lean production system and the U.S. Fordist management to create a unique collaborative, cross-cultural hybrid organization model. In particular, we examine several cultural attributes of work that necessitated mutual adaptation and cooperation among the workers, and the state of labor relations, gender dynamics, and quality of work life. Finally, we pull together these factors to explore the short and long term implications of the plant as a model for developing countries.

Resumen

La planta de estampado y ensamblado de automóviles en Hermosillo, México es una operatión clase mundial en calidad y productividad. En este artículo estudiamos los procesos que lograron integrar una fuerza de trabajo mexicana, con un sistema de productión japonés altamente eficiente (lean production), y una administración estadounidense diseñada de acuerdo a los métodos tradicionales de fabricación de la compañía Ford, que hicieron posible un modelo colaborativo e intercultural de trabajo único en su clase. En particular, examinamos algunos factores culturales que requirieron especial adaptación como la cooperación entre los trabajadores, la adminisración de personal y las relaciones industriales, la interacción entre los trabajadores de ambos sexos y la calidad de vida en el trabajo. Finalmente, se consideran de manera conjunta todos estos factores, con el propósito de explorar las implicaciones de corto y largo plazo de la planta Hermosillo como un modelo potencial para paises en vías de desarrollo.

Resumo

A montadora de automóveis em Hermosillo, México, é mundialmente reconhecida por sua produtividade e qualidale. Nós analisamos o processo de intergração entre a força de trabalho mexicana, os eficientes métodos japoneses de sistema de produçãao e o estilo Fordista de gerência americana ao criar um modelo organizacional hibirdo colaborativo e inter-cultural único. Em particular, nós examinamos diversos atributos culturais do trabalho que necessitou de adaptação mútua e de colaboração entre os trabalhadores, como também o estado das relações de trabalho, a dinâmica entre os sexos e a qualidade da vida no trabalho. Finalmente, nós agregamos esses fatores para explorar as implicações de curto e de longo prazo do processo como um modelo para países em desenvolvimento.     

机械装配的工艺基础分析

机器装配的基本任务是在一定的生产条件下,以高生产率和较低的成本装配出高质量的产品。文章主要讨论分析了装配方法以及装配工艺规程的制定。     

中日电气机械产业内贸易及竞争优势结构分析

电气机械产业内贸易指数显示,产业内贸易成为中日贸易的主要部分,但是进出口贸易存在动态失衡现象,对双方贸易收支平衡产生不利影响。竞争力和比较优势指数进一步表明,中国只具有分工链的组装优势,而日本占据了上游研发、核心零部件的生产环节,导致中国在中日产业内分工和利益分配结构中长期处于不利地位。中国必须着眼于"微笑曲线"的研究开发和关键零部件以及品牌和营销等上游环节,努力实现分工链条的升级。     

基于实训教学的模拟汽车总装线设计研究

尽管很多高职院校都开办了汽车制造与装配技术专业,但由于不具备用于汽车总装的实训条件,使得该专业实训教学项目的开展受到了限制,因此,如何在学校能力所及的范围内,设计和开发面向实训教学的模拟汽车总装线就显得十分必要。面对汽车总装线这样一条庞大的系统工程,任何一所院校都无法复制,所以,本文以学校现有的和可添置的设备为前提,进行模拟汽车总装线的设计研究,重点是体现汽车总装线的工段设置、工艺流程以及部分可行的装配操作项目。     

C语言与汇编语言混合编程声明规则

C语言与汇编语言两者混合编程,对变量、函数相互引用时必须声明。本文详细分析了声明规则,并举例说明。     

汇编语言授课方法

利用汇编语言编程,所编程序时空效率非常高,但汇编语言复杂、难懂、效率低。本文就如何提高汇编语言的教学质量,对授课方法进行了分析。     

板级立体组装侧板垂直互联技术

通过对板级立体组装的侧板垂直互联技术进行研究,找到了板级垂直互联的一种可靠的理论途径,很好地解决了板间垂直互联的问题,实现了板级立体组装的侧板垂直互联工艺技术.     

变电站电气安装调试中的常见问题与对策

变电站是电力系统的重要组成部分,是进行变电与配电的主要场所,变电站电气设备安装质量关系到整个电力系统能否正常安全运行。由于在变电站电气安装过程中涉及设备品种繁多、安装调试程序复杂,一些问题会凸显出来,本文分析了变电站电气安装过程中的常见问题,针对存在的问题提出了相应解决措施,旨在为变电站电气安装调试提供借鉴经验。