气动攻丝机的设计

气动攻丝机的设计

任务书

1．课题意义及目标

攻丝机的三个主要组成部分：气动马达，减速器和攻丝头，是一种在机件的壳体上，设备的端面上，以及在螺母和法兰盘等具有各种不同规格通孔或盲孔的零件上，加工内螺纹的机械加工设备。主要任务：

1）了解气动攻丝机的工作原理，对气动攻丝机进行设计计算（包括材料的选择、标准件的选择、零部件的尺寸及安全校核、以及零部件的结构等）。

2）利用计算机和CAD软件完成攻丝机各部分结构图的绘制。

3）确保关键零部件的设计，使气动攻丝机各运动部件的协调性得到充分保证。2．主要任务

1．查阅相关资料，撰写毕业设计开题报告；

2. 按照学院毕业设计说明书撰写要求，写出设计说明书一份，并提供计CAD图纸。

要求有各部分零件图和完整的装配图。

3．主要参考资料

1）王安. 气动攻丝机[M].新技术新工艺.1985

2）濮良贵，纪名刚.机械设计[M]. 第七版.高等教育出版社，2001.

4．进度安排

审核人：年月日

气动攻丝机的设计

摘要：本论文主要针对在市场上具有广泛应用的气动攻丝机作了主体结构的设计。攻丝机是一种在机件壳体、设备端面、螺母、法兰盘等各种具有不同规格的通孔或盲孔的零件的孔的内侧面加工出内螺纹、螺丝或叫牙扣的机械加工设备。

气动攻丝机的工作原理是利用压缩空气作为动力。压缩空气通过气压调整器接入攻丝马达，压下扳机，高压空气阀门各换向按钮组件时入马达内部，带动马达转子叶片产生轴向旋转力，转子运动后经各齿轮副变速输出强大的扭力，带动丝锥进行攻丝作业。

基于攻丝机的工作原理，是使用压缩空气的空气压缩机作为动力源，用来提供高压空气。设计手柄的组件是控制高压气进入马达内部的主要渠道，同时也是排气的处理装置。气动马达，是根据参数设计选择的标准产品，满足体积小且能提供可以满足正常工作的功率设计要求。气动马达产生的强大转矩需要通过减速装置输出，因此设计了行星齿轮减速器。与普通的齿轮传动相比，行星传动具有许多独特的优点：由于输入轴和输出轴所具有的同轴性，可以使其在传递动力时进行功率分流。另外，行星传动体积小，质量小，结构紧凑，承载能力大，运动平稳性高等。我在设计工作中充分地发挥这些优点，同时尽可能降低其缺点的影响，力求减速器的性能优良。经过减速器变速的转速满足攻丝机正常工作的要求，然后通过螺纹连接与攻丝头连接，最终带动丝锥转动，进行攻丝作业。

本文完成的主要工作有：

1）对气动攻丝机进行设计计算（包括材料的选择、标准件的选择、零部件的尺寸及安全校核、以及零部件的结构等）。

2）利用计算机和CAD软件完成攻丝机各部分结构图的绘制。

3）确保关键零部件的设计，使气动攻丝机各运动部件的协调性得到充分保证，来提高气动攻丝机运动的安全性和可靠性。

4）对关键的零部件的设计生产进行技术攻关，研究关键零部件的新材料应用及热处理工艺，使关键零部件达到设计要求的强度和硬度，使气动攻丝机的结构更加合理，使设计更加完美。

关键词：气动，攻丝机，马达，减速器，丝锥

Pneumatic Tapping Machine Design

Abstract：This design is mainly for Pneumatic tapping machine which is widely used in the market now. Tapping machine is a Mech anic’s Processing equipment by processing internal thread on the case of mechanical parts, the end face of the device and parts with through-hole or blind hole of different specifications like the nut and the flange.

The working principle of pneumatic tapping machine is using high-pressure air as the sources of power and pressing the trigger after the high-pressure air going through the pressure regulator and going into the pneumatic tapping machine. Then the high-pressure air goes through buttons of the intake valve and valves to get in the pneumatic motor and drive the rotor blades of the motor. Finally, it generates the axial rotation force. The movement of the rotor blades turns into enough torque through the reducer and makes the taps of the tapping head turn and work normally.

In this paper, the high-pressure air is used as the sources of power based on the working principle of pneumatic tapping machine to provide the high-pressure air. Design the handle to act as the way of controlling the high-pressure air to get into the motor, within which is also equipment dealing with ruling out the exhaust air. As for the pneumatic motor, choose a appropriate product from the Design Manual considering my design parameters. It is such a standard product conforming the design requirements with small size, but it also can provide enough power. The torque is outputted by the pneumatic motor that should be just fit for normal working there for a reducer is needed. Design a planetary gear reducer as a result. Compared with ordinary gear reducer, a planetary gear reducer has an unique advantage: it can do power split when transmit the power because of the nature of coaxial. What’s more, it has small size, quality, compact structure, large carrying capacity and smooth movement. During my design work, try hard to exert these advantages and try to avoid of the shortcoming at the same time. The reducer is connected with the tapping head of threaded connection.

The aims of my paper mainly are as follows:

(1）The design calculations includes material selection, the choice of standard parts , spare parts , the check of the size ,security ,the structure and so on.

(2) Drawing the chart of various parts of the pneumatic tapping machine using the