关于高职实训教学的研究

该文从实训在高职教育实践教学中的重要地位,建立独立的、模块化、开放的高职实训教学体系,建立稳定的实训场所——校内高职 实训基地,加强校企合作,提供真实的职业环境——校外高职实训基地等四个方面进行了研究和论述。     

立体织造打纬阻力的计算

在织造一般平面织物的打纬过程中,纬纱受到两部分阻力的共同作用:一是纬纱在运动过程中与经纱的摩擦阻力,二是经纱对纬纱的弹性阻力.在三维立体织造过程中,由于存在多层经纱,并同时引入多根纬纱,立体织造的打纬阻力比传统的平面织造的打纬阻力要大得多.由于打纬力必须大于等于打纬阻力才能完成打纬运动,因此,打纬机构的设计需要计算出打纬阻力的范围.基于积分方法计算一般平纹织物打纬阻力,并根据立体织物的组织特性,推导出立体织物打纬阻力的计算方程,为立体织机打纬机构的设计建立了理论基础.     

Dynamic Analysis of Four-Bar Beating-up Mechanism with Joint Clearance

For the four-bar beating-up mechanism of air-jet loom,the plain bearing of linkage is the bearing with dynamic load,and is immersed in the lubricant-box.If the joint clearance is considered,the research on linkage movement could be very complicated.In this paper,the kinematic characteristics of four-bar beating-up mechanism with joint clearance were studied by analyzing the trace of journal center and the balance of radial,tangential forces,and bearing load.The region of principal vibration and its forming ...     

共分散复合润滑剂ESC的合成和性能

报导了N,N′-亚烷基双脂肪酰胺/脂肪酸金属皂共分散复合润滑剂的合成方法,以及它的热稳定性和润滑性的研究,结果发现,复合润滑剂与同种机械混合润滑剂相比,其热稳定性和润滑性都较好。     

电子送经织轴驱动系统的设计

介绍了采用步进电机为送经电机的织轴驱动系统的设计方法，包括送经电机的选取、步进电机驱动器的设计和织轴驱动系统机械传动的参数计算。这里得出步进电机是织机送经机构理想的驱动元件，如果采用高电压斩波限流驱动电路，步进电机具有输出力矩大、高频特性好、功率消耗低的特点，足以满足织轴驱动的工艺要求。     

Job-shop Scheduling with Multi-objectives Based on Genetic Algorithms

The technology of production planning and scheduling is one of the critical technologies that decide whether the automated manufacturing systems can get the expected economy. Job shop scheduling belongs to the special class of NP-hard problems. Most of the algorithms used to optimize this class of problems have an exponential time; that is, the computation time increases exponentially with problem size. In scheduling study, makespan is often considered as the main objective. In this paper, makespan, the due date request of the key jobs, the availability of the key machine, the average wait-time of the jobs, and the similarities between the jobs and so on are taken into account based on the application of mechanical engineering. The job shop scheduling problem with multi-objectives is analyzed and studied by using genetic algorithms based on the mechanics of genetics and natural selection. In this research, the tactics of the coding and decoding and the design of the genetic operators, along with the des     

浅谈常用的建筑电气工程安全保护

建筑电气工程是整个建筑工程中的重要组成部分,其安全保护的重要性越来越受到人们的重视。本文首先对电气工程的重要地位进行分析,并从绝缘保护、短路、过载保护、漏电保护以及接地保护这四个方面的内容,对电气工程中的安全保护进行简单论述。     

施工图设计应考虑室内装修

经济好转后的居民,普遍要对居室进行不同程度的改造装修.合理的改造装修,无疑会使生活空间变得更舒适、更方便.但是,也有一些住户由于对房屋结构缺乏了解,盲目进行改造装修,带来了不少安全隐患.为此,笔者就这些隐患及施工图设计如何考虑室内装修谈点见解.     

并条机匀整装置的带轮差动机构

为解决制造成本高的问题,在保证机构传动效率的基础上,将带传动引入并条机匀整装置的差动机构中.对改装后的2K-H周转轮系的结构图进行运动和受力分析,推导出其传动比和效率公式,并将其效率与齿轮差动轮系的效率进行了对比.