燕山大学医用棉签制造机机械原理课程设计.docVIP

机械原理课程设计 说明书 学 院：机械工程学院 2012年07月13日 前言 随着社会主义经济的发展，我国社会主义医疗卫生水平逐步建全，医用棉签作为一种常用的医用工具，在医用消毒，取样等许多方面具有不可取代的地位，由于医用棉签需求量较大，传统的手工卷制棉签无法满足日益增长的需求量，为了提高工效采用卷棉机代替手工卷制棉签。 医用棉签卷棉机是基于卷棉机而衍生出来的一种新的机械产品。它的适用范围为医院，医疗卫生行业，因为它灵活便捷，高效成本低，占地小，正被广泛使用。 它的出现是使传统的手工制作变为现代机械加工，它的设计根据实际生产和预先的数据以传送装置为核心，经过科学的计算和分析，设计。选择了一套医用棉签卷棉机的传动设备，并设计了进棉，剪棉，送签，卷棉等一系列装置。 目 录 一.医用棉签功能简介 ·····························5 二.医用棉签的总体设计 ···························5 2.1原始数据及设计要求···························5 2.2设计方法·····································5 2.3机械运动的拟定·······························5 三.各工艺动作方案的分析··························7 3.1送棉机构·····································7 3.2压棉机构·····································7 3.3揪棉机构·····································8 3.4送签机构·····································9 3.5卷棉机构·····································9 四.各构件的尺寸计算·························12 4.1送棉凸轮的尺寸计算··························12 4.2压棉凸轮的尺寸计算··························12 4.3揪棉凸轮的尺寸计算··························15 4.4送签机构的尺寸计算··························15 4.5行星轮系的尺寸计算··························16 4.6挡板的尺寸 ·································17 4.7曲柄滑块机构的尺寸计算······················17 4.8工作台尺寸··································18 五．典型机构的运动分析和动力分析·············19 5.1凸轮···································19 5.2曲柄滑块机构···························20 六.电机的选择··································21 七.减速器的设计································22 八.运动循环图··································22 九.心得体会····································22 十.参考文献····································31 一.医用棉签功能简介 针对目前医用棉签使用量大、质量要求高、生产效率低以及不合格率高等问题，我组设计了一款医用棉签制造机。该机器较大的提高了棉签的生产效率及合格率，而且成本较低，构造简单，满足了社会对医用棉签的需求。该机器按照传统的手工制签过程分为送棉、压棉、揪棉、送签及卷棉等五个机构。其中送棉、压棉及揪棉均采用凸轮机构；采用漏斗送签，行星轮系卷棉机构。生产出高质量的医用棉签。 二.医用棉签的总体设计 2.1原始数据及设计要求 1）棉花。条状脱脂棉，棉宽15-20mm，自然厚4-5mm 2）签杆。医院通用签杆，直径约3mm，杆长约70mm，卷棉部分约-32mm。生产率。每分钟卷支，每支卷取棉块长约-32mm。卷棉签机体积要小，重量轻，工作可靠，外形美观，成本低，卷出