摘要由于砂带打磨等技术的持续发展，砂带机抛光在加工行业上所占比重变得越来越大。有了先进的砂带抛光机器设备，一些表面加工工序诸如平面抛光、圆形抛光、修整抛光和砂磨、倒棱角和去表面毛刺等均可得到高效的完成。83133

本课题对便携式砂带机从结构布置、砂架形式、工作装置到传动系统均进行合理的分析设计，并给出具体方案。并详细设计了一系列实用功能，如除尘口、张紧装置、开关等设计。考虑到综合实用因素，设计时更多考虑了方便手持的结构，并严格控制了总重量和总体积，以减轻操作者的疲劳。然后设计了传动系统，包括转速的选择、变速的方法等，并就实际方案设计出传动轴、齿轮块等传动件的具体尺寸。传动系统设计为6级变速，速度变化范围为3-16m/s，以适应不同的工作环境。最后校核了传动系统包括输出轴的强度，保证产品具备实际使用的强度。

通过此次设计便携式砂带机，掌握砂带机的工作原理，有利于提高砂带机的工作效率，为以后便携式砂带机设计提供参考。

毕业论文关键词：便携式砂带机；工作装置；传动系统

Abstract Due to the continued development of the technology of abrasive belt machine,the effect of abrasive belt machine in the metal processing industry has become irreplaceable。 With advanced abrasive belt polishing equipment, metal processing tasks such as surface polishing, round polishing, radius polishing, edges and burr removal can be satisfactorily completed。   

Subject of the portable belt machine from the structure arrangement, sand frame form, working device and transmission system are reasonable analysis and design, and gives a concrete solution。 And a series of practical functions are designed detailedly , such as dust mouth, tensioning devices, switches and other design。 Taking into account the comprehensive practical factors, the design is more convenient to consider the structure, and strictly control the total weight and the total volume, in order to reduce the fatigue of the operator。 Then, the transmission system is designed, including the choice of speed, the method of variable speed, and so on, the actual design of the transmission shaft, gear block and other parts of the specific size。Findlly，transmission system has level 6 speed , speed range for the 3-16m/s, to adapt to different working environments, and by manipulating the poke rod sliding gear to realize the speed transmission。 

Through the design of a portable belt machine, master of abrasive belt grinding machine working principle, try to improve the working efficiency of the portable belt machine, in order to provide references for portable belt machine design in the future。

Keywords: Portable belt machine；Working device；Transmission system

目录

第一章 绪论 1

1。1 研究的意义及目的 1

1。2 国内外对砂带机的研究现状与发展 1

1。3 主要研究内容 2

1。4 研究方法及步骤 3

第二章 总体方案设计 4

2。1 设计的总体原则 4

2。2 砂架的形式 4

2。3 机架的设计 5

2。4 吸尘口的设置 5

2。5 变速系统 5

2。6 总重量的控制 5

2。7 设计方案的确定