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摘要本次毕业设计的课题是车载外能源机枪的总体方案设计。车载外能源机枪即使用外能源驱动自动机工作的车载机枪武器，主要装备在装甲车、坦克等载具上，主要杀伤目标为人员和轻装甲目标。本次总体方案的确定以外能源驱动为基础，遵循可行、可靠的原则，选择了以电机带动活塞连杆机构以带动自动机往复运动的自动方式；为解决闭锁时间问题选择了改进过的闭锁片偏转式闭锁机构；供输弹机构采用弹链供弹、双程进弹机构；退壳机构使用挤压式退壳机构；发射机构为电开关；击发机构为击锤平移式；膛口装置为六孔制退器。本次设计从搜集整理资料、构思方案到画出具体结构图总共历时近半年的时间，完成了对总体方案的设计和枪管、闭锁机构、供弹机构、击发机构、退壳机构、膛口制退器、机匣、瞄准具等重要部分的设计，完成了尺寸计算和强度校核。并使用Solidworks和AutoCAD两款软件进行整枪的模型设计，对总体结构布局和各个重要零件均绘制了三维图和二维图。68551
毕业论文关键词：外能源 车载机枪 自动武器 Solidworks建模 AutoCAD二维图绘制
毕业设计说明书（论文）外文摘要
The design of machine gun overall vehicle drived by external energy
The graduation project topic is the design of machine gun overall vehicle drived by external energy. Machine gun drived by external energy use automatic machines work outside the energy-driven vehicle machine gun weapon, major equipmented in armored vehicles, tanks and other vehicles, the main target of enemy personnel and light armored targets. The overall program than to determine the energy-driven basis, followed feasible and reliable principle, chose to motor driven piston rod mechanism to drive the automatic mode automatic machine reciprocate; chose improvement over the lockout chip lockout time to solve the problem deflection-type locking mechanism; supply chain Ramming for organizations to adopt bomb bomb, bomb bodies into the two-way; retirement housing agencies use squeeze back shell body; firing mechanism for the electric switch; firing mechanism for the hammer translational; muzzle device is tin retirement system. This design has collected information from, the idea of the specific structure of the program to draw a total lasted nearly six months, completed the overall program design and barrel, the locking mechanism for the bomb mechanism, firing mechanism, back shell body, muzzle important part of the retirement system, receiver, sights such as design, completed the size and strength check calculation. And using Solidworks and AutoCAD software for the entire two gun model design, layout and overall structure of the various important parts are drawn three-dimensional and two-dimensional diagram in Fig.
Keywords: machine gun ;automatic weapon ; external energy ; AutoCAD ; Solidworks;overall vehicle
目录
1引言·1
1.1外能源车载机枪的战术性能特点···1
1.2国内外外能源机枪的发展状况·2
1.2.1国外外能源机枪的发展状况·2
1.2.2国内外能源机枪的发展·3
1.3车载外能源机枪设计中的一些问题·3
2.总体方案设计·4
2.1枪械结构布置特点···5
3枪管设计·6
3.1枪管外部结构设计···6
3.1.1枪管外形·6
3.1.2枪管与机匣的联接·6
3.2枪管内膛结构设计···7
3.2.1弹膛设计·7
3.2.2坡膛设计10
3.2.3线膛设计10
3.3枪管管壁强度设计··11
3.3.1内弹道P-T曲线··12
3.3.2枪管内壁的应力与应变12
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