首页 人人文库网 > 图纸下载 > 毕业设计 > 奥迪汽车标志注塑模具设计与制造【机械毕业设计WORD+CAD图纸】【优秀全套设计】
奥迪汽车标志注塑模具设计与制造说明书.doc

奥迪汽车标志注塑模具设计与制造【机械毕业设计WORD+CAD图纸】【优秀全套设计】

收藏

压缩包内文档预览：(预览前20页/共23页)
预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图 预览图
编号：449378    类型：共享资源    大小：6.59MB    格式：ZIP    上传时间：2015-07-05 上传人：小*** IP属地：福建
45
积分
举报
举报 版权申诉
版权申诉 word格式文档无特别注明外均可编辑修改；预览文档经过压缩，下载后原文更清晰！ 立即下载
关 键 词：
奥迪 汽车 标志 注塑 模具设计 制造 机械 毕业设计 word cad 图纸 优秀 优良 全套 设计
资源描述：

文档包括:

说明书一份,23页,9700字左右.

翻译一份.


图纸共5张:

A1-总装图.dwg

A2-定模板.dwg

A2-定模座板.dwg

A2-动模板.dwg

A3-型芯.dwg

目录


摘要 ····························································2

前言·····························································3


第一章 材料工艺分析

     1.1 材料特性···············································4

     1.2 模具设计方面需注意·····································4

     1.3 注塑工艺条件···········································4

1.4 成型性能···············································4


第二章 制品结构及尺寸分析

     2.1 制品结构分析···········································5

     2.2 制品尺寸精度分析·······································5


第三章 模具结构设计

     3.1 分型面的选择···········································6

     3.2 型腔布局···············································7

     3.3 浇注系统的确定·········································8

     3.4 注射机的选择···········································12

     3.5 模架的选择·············································14

     3.6 成型零部件设计·········································15

     3.7 推出机构设计···········································17

     3.8 排气系统设计···········································18

     3.9 冷却系统设计···········································19

附  毕业设计小结···········································20

谢辞···················································21

参考文献···············································22


内容简介：
外文资料翻译 系 别 XXXXXXX 专 业 XXXXX 班 级 XXXX 姓 名 XXX 学 号 XXXXX 指导教师 XXXXXX 2010 年 4 月 nts 1 Compression casting craft and compression casting mold design main point Abstract: The die-casting machine, the mold and the alloy three, take press the casting as this, among the compression casting craft penetration, their conformity is organically a effective system, causes the die-casting machine and the mold obtains the good match, plays the optimization to press the casting structure, the optimal die-casting machine, the optimization presses the mold design, enhances the craft operating point the flexible role, thus provides the reliable guarantee for the compression casting production.Therefore, the compression casting craft lies within in the mold saying, depth of the connotation is self-evident. Key word: Die-casting machine; Mold; Compression casting craft; The mold designs 1.Die-casting machine - mold - alloy system Die-casting machine, the mold and alloy these three factors, in presses in the casting production process, they constituted a system, namely the die-casting machine - mold - alloy system, it is take presses the casting as this, among the craft penetration, entrusts with the system vigor and the efficiency, but the mold is the craft enters the system the platform.The die-casting machine, the mold and the alloy three relations expressed vividly as shown in Figure 1. The die-casting machine - mold - alloy system main performance is: (1)Ingate position influence backfill metal melt flow direction and the condition, with the backfill die space quality, have the decisive influence to the mold structure and the craft, this is the key is at. (2)Designation best sufficient time, this is extremely important one step, affects to sufficient time metal melt rate of volume flow (Q), also is the sufficient power, according to the above and computation ingate size. (3)Choice exhaust, overflow position and size, except outside normal exhaust, pollution discharge and temperature balance, but also may reduce the impact pressure, avoids the metal splashing and producing the burr. (4) Heating and cooling, balanced mold temperature, maintenance operating temperature. 2.Compression casting crafts and the mold design key technologies When compression casting the ingate position influence presses the casting the structural design, the quality and the compression casting mold design, may obtain the correct establishment ingate position prompt through the inquiry material.As a result of the casting structure multiplicity, must choose the ingate the correct position is very nts 2 difficult, but also has some basic requests, like thought generally the establishment ingate must cause sufficient when the metallic jet has as far as possible compared the long distance by the open jet in the die space average, also is the correct ingate position, the shape, the size (flows to angle) to coordinate the compression casting parameter to be possible to obtain the metallic jet to expand along the wall unceasing order, to change, and continuously expands to the terminus.The die space majority (i.e. branch die space) completes by the jet flow backfill, only then a small part of die space (i.e. non-branch die space) by the metal melt branch supplemented completes or collides by the metal melt stock class completes the backfill, and overflows the system elimination vestiges through the platoon.Figure 2 is in the pouring position and branch die space schematic drawing 1”. The identical pressure casting choice different ingate position and flows to the angle, when may obtain the area percentage which the different branch die space, the non-branch die space and hold respectively, Figure 2 the shell compression casting, because the ingate position is different, obtains the different branch die space and the non-branch die space.The chart 2a ingate is vertical to one side wall, because the components crown long square edged orifice separates two sidewalls, the result is only then one side for the branch die space; Must fill another one side wall, must pass through the running channel both sides attachment point, the final two liquid flow gathering completes the packing, this part is the non-branch die space.Because the branch die space accounts for the area percentage not to be high, therefore can produce the massive waste products, like chart 2a1.In chart 2b, the ingate position does not make the change, only is wall thickness and so on crown rectangle Kong Yong craft muscles connects, like this fills when the metal melt changes, fills another one side wall along the muscle board, caused two sidewalls both to become the branch die space, increased the branch die space to account for the percentage, the casting quality also large scale enhances, like chart 2b1.In chart 2c, the components and chart 2a are same, the crown square edged orifice does not add the craft muscle, but establishes the ingate in a components end, such metal melt simultaneously carries on the backfill from two sidewalls, thus expanded the branch die space percentage, had guaranteed the quality, enhanced the qualified rate.This is the identical components three kind of ingate establishment plan, the proof ingate position crucial nature. Although the computer technology is helpful to the designation ingate position, but the computer technology is only one method, but the ingate position design did not lose was still a key technologies. Between 3 compression casting craftmain point 3.1 metal pressures, the speed and the current capacity relations In the principle the die-casting machine are a liquid metal pump, it transports under the pressure the metal melt to the compression casting model cavity in.The pump characteristic is transports the power (rate of volume flow), is the pressure function, this aspect as early as in the 70s, first makes the valuable development work nts 3 by Australian Asia CSIRO, has established a useful tool with the pQ2 chart, according to the casting i.e. mold request, decided the machine the adjustment value, is originally uses in the hot cell die-casting machine the zinc base alloy pressing in the casting, but very quick expands to Leng Shiji on.In principle, now the pressure and the rate of volume flow relations which knew very well from the hydromechanics principle, shifts to the die-casting machine practical application. The metal pressure is higher, is also quicker in the spray nozzle and the ingate place metal melt flow rate, but also must consider victory flow resistance which as a result of the flowing section change, the direction change and the wall roughness existence produces, xi expresses sum of the these resistance with the friction coefficient. If the known immeasurable steel coefficient xi, may calculate the metal pressure which certain ingate speed needs, according to the compression casting alloy and the casting request, the ingate speed has an empirical value, should observe, see Table 1, therefore needs the die-casting machine to provide the corresponding speed. Table 1 ingate speed selection Table 1 Choice of velocity at ingate Project A1 Mg Cu Zn a(m.s-1) 25-60 40-90 30-45 30-50 The low value uses in the relatively thick casting, the high value uses in the relatively thin casting, common magnesium alloy casting ingate speed compared to aluminum high25%. Time the vacuum die casting ingate speed is 15-30m/s. 3.2 Take the casting as this, optimizes the die-casting machine - mold - alloy system, enhances the craft flexibility In the die-casting machine - mold - alloy system, through the adjustment craft parameter, may improve presses the casting the quality and the performance.These craft parameter defined with work window (OW).This indicated OW is these craft parameter limit chart.In the compression casting craft, the sufficient time, the ingate speed and the final metal static pressure use to define OW, these parameters and sufficient phenomenon related, relies on in the mold design and the die-casting machine performance.Designs when the mold, in OW all spots were considered all is equal, and does not have the priority, may think the best operating point exists in OW unknown lights, in presses the mold installs on the die-casting machine in front of the experimental mold is unable to find it.In the mold design stage guaranteed easy to find the good operating point is based on the flexible consideration, the flexibility is obtains in OW through the adjustment. Therefore, divides into the craft parameter the soft parameter and the hard parameter two kinds, the soft parameter is refers through the operation or a control device carries on the adjustment the parameter, like parameters and so on power level, nts 4 metal pressure, melt temperature, mold temperature and cycle time.The die-casting machine which the hard parameter is refers to which one kind to have to revise the mold or simultaneously must revise, like drift diameter, ingate area, air discharge duct and so on.Soft parameter when experimental mold easy to change and to obtain successfully, the hard parameter changes then both the difficulty and costs a great deal of money, time-consuming, needs to disassemble the mold frequently in order to revise.Therefore, the optimized method is and expands the OW internal assignment integral point based on the soft parameter the flexibility, thus provides the great scope for the mold experiment, avoids the time-consuming expensive mold change. 3.3 shoots the curve from the pressure to mention Now die-casting machine Chang Peiyi three level of compression casting systems: The level advances gradually for the drift idling speed, pushes the metal melt to the ingate, namely the so-called slow pressure shoots the stage; The second level is the drift by high speed the metal melt through the ingate, fills the die space in the stipulation time, namely sufficient stage; The third level for the casting which not yet completely coagulates under the high pressure (starts pressure intensifier) to carry on the coagulation and by the compaction, namely compaction stage.Shown in Figure 17 for the model three levels of pressures shoots the curve schematic drawing, attempts the curvature to divide into the level slow pressure to shoot, two levels sufficient and three level of turbo-charged compaction three stages.Some pressures shoot the system to shoot the level pressure divide into two small parts, the first part is the drift seals up the pouring material mouth (shown in Figure 18 the X1 line) first, the second part shoots the stage for the slow pressure, then carries on the light again and the compaction, this became four levels of pressures to shoot the system, like this except might avoid the melt splashing the pouring material mouth, might raise the compression chamber initial fullness. 3.3.1. Slow pressures shoot the stage Slow pressure to shoot the stage mainly are elect in the craft to control the slow pressure to shoot the speed, the goal are wells up when the metal melt to the ingate, presses in the room the gas to be able completely from the runner to enter the die space, but by the metal melt package, does not avoid in the casting forming the blowhole; Therefore, needs to choose a critical drift speed, may be the constant acceleration, also may be the constant speed, said generally, the constant acceleration effect is good.The overseas die-casting machine matches by “Parashot or “SIMUI” the constant acceleration slow pressure shoots the speed elects to control the system, Figure 19, chart 202 may take elects to control the slow pressure to shoot reference the speed. 3.3.2. Sufficient stages nts 5 This stage most should pay attention in the craft: The sufficient time, the pressure shoot the speed, the ingate speed and the air pressure shoot the speed the reciprocity, and mainly wants the parameter the choice. .Best sufficient time The sufficient time is the metal melt has flowed the ingate, by the high ingate speed, fills the die space before the metal melt stop flowing the time.This time is very short, is an extremely essential parameter, selects the die-casting machine, carries on foundation which the technological design and the mold design. The sufficient time must be short, the goal is sufficient when does not have the early time in the casting smallest spot or the liquid flow far-end to coagulate, avoids the casting appearing lacks flaws and so on meat, cold shot.The sufficient time is shorter, the sufficient speed is higher, can enlarge the die space to wear, but but also possible to splash because of zhang the metal and to produce the edge; The sufficient speed is high, can enable in the die space the gas not to have the enough time to transgress from the die space.The sufficient time correct choice only then the overall evaluation can obtain, Table 3 gave has chosen the sufficient time and ingate speed correlation factor 4. The metal melt had decided from the operating temperature to the temperature of solidification release quantity of heat it maintains the castability under the same thermal conductivity time, therefore this kind of thermal then achievement determines its may imitate the time criterion most greatly.The release quantity of heat and the sufficient time are proportional, compared to may obtain several kind of alloy sufficient time relations according to the quantity of heat.The Mg alloy, the Zn alloy, the A1 alloy and the Cu alloy under the same coagulation condition, from the operating temperature to the temperature of solidification release quantity of heat respectively are 261, 329, 509, 918kCal/dm3, then they the time ratio is Mg: Zn: AI: Cu 0.51: 0.65:1:1.8.In other words, Mg=: 0.51AI, Zn=0.65AI, Cu=1.8AI. When compression casting obvious molten metal in die space not superheat, the people observe the melt to flow have certain quantity solid phase, when the solid phase rate achieved30%-80%, In the die space the bath movement only can through the high rate of inflow, when best sufficient time according to type (17) computation, quite Yu Fzhi is70%-80%. The best sufficient time speaking of each kind of magnesium alloy shoots when the pressure must the aluminum alloy be quicker than at least 2 times, the copper alloy best sufficient time and the alloy composition element related, the leaded brass (CuZn37Pb) and the magnesium alloy is close, the silicon brass (CuZnl5Si4) and the aluminum alloy is close. The casting surface quality quantity increases along with the sufficient time changes, the sufficient time is short, the pressure shoots the power to be big, sufficient is quick, but because of the ingate thickness limit, the excessively short sufficient time causes the casting the factor of porosity increase.Figure 22 is the sufficient time nts 6 presses the casting quality to the aluminum influence 7.Chart 233,8 is one kind which the recent years proposed to the aluminum, the magnesium presses the casting wall thickness and the sufficient time relations relational graph.The superficial quality requests to choose the short sufficient time high. Pressure shoots the speed, the sufficient speed and the air pressure shoots the speed. (1) Pressure shoots the speed (drift speed) The pressure to shoot the speed (drift speed) is in the sufficient stage unit time drift displacement.In traveling schedule curve sufficient stage no matter what chooses two spots, the survey traveling schedule distance and the sufficient time, then obtain the pressure to shoot the speed = survey the distance (mm)/pressure to shoot time (ms). (2)Sufficient speed (ingate speed) The sufficient speed is the ingate speed, concerns with the drift speed and the drift area.In presses in the room - - mold this loop system, take the sufficient time metal passes the ingate rate of volume flow Q as the foundation.Only then after designated generally the die-casting machine, can determine the drift area, the ingate speed may according to Table 1 selection. The ingate speed is the important parameter, has the important influence to the casting quality and the mold life.The ingate speed excessively is high can increase the die space surface because corrodes, sticks the probability which the mold receives damages; Although the low ingate speed is advantageous in the gas discharges from in vivo, but also can cause the casting mechanics performance and the surface quality goes bad.The casting volume flaw often appears by the uniform distribution micro hole or by the big hole in the casting, high ingate speed compression casting strength ratio low ingate speed low, is helpful in forms the micro hole in the casting, causes the casting surface to be brighter and cleaner, the organization is more compact. Ingate speed and casting wall thickness related, but decided by the ingate thickness, the actual same wall thickness casting, possibly has the different thickness ingate, from this also can use the different ingate speed to come the compression casting. But has to ingate structure experience graph 2, confirmed the ingate structure and the ingate speed, when to casting quality influence, recommendation fine casting operating point region thin-walled casting, in choice neighbor chart grid area.Obviously, when very thin ingate, because the ingate parameter is the low value, the need higher ingate speed. Sufficient time drift speed o excessively high, besides to mold life and casting quality influential, but also can because the sufficient end time drift impact function, has caused to move, to decide the mold to push, when is pushed the slit to surpass nts 7 0.05-0.15 mm, but also can produce the molten metal the phenomenon which splashes from the mold comes out. Sufficient time ingate speed a with casting wall thickness and metal melt in die
温馨提示:
1: 本站所有资源如无特殊说明，都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
2: 本站的文档不包含任何第三方提供的附件图纸等，如果需要附件，请联系上传者。文件的所有权益归上传用户所有。
3.本站RAR压缩包中若带图纸，网页内容里面会有图纸预览，若没有图纸预览就没有图纸。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 人人文库网仅提供信息存储空间，仅对用户上传内容的表现方式做保护处理，对用户上传分享的文档内容本身不做任何修改或编辑，并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容，请与我们联系，我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
提示  人人文库网所有资源均是用户自行上传分享，仅供网友学习交流，未经上传用户书面授权，请勿作他用。
关于本文
本文标题：奥迪汽车标志注塑模具设计与制造【机械毕业设计WORD+CAD图纸】【优秀全套设计】
链接地址：https://www.renrendoc.com/p-449378.html

官方联系方式

网站客服网站客服      侵权投诉侵权投诉
1:下载资料失败解决办法   
2:不支持迅雷下载,请使用浏览器下载   
3:不支持QQ浏览器下载,请用其他浏览器   
4:下载后的文档和图纸-无水印   
5:文档经过压缩，下载后原文更清晰   
点击下载此资源
关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

网站客服QQ：2881952447     

copyright@ 2020-2025  renrendoc.com 人人文库版权所有   联系电话：400-852-1180

备案号:蜀ICP备2022000484号-2       经营许可证: 川B2-20220663       公网安备川公网安备: 51019002004831号

本站为文档C2C交易模式，即用户上传的文档直接被用户下载，本站只是中间服务平台，本站所有文档下载所得的收益归上传人(含作者)所有。人人文库网仅提供信息存储空间，仅对用户上传内容的表现方式做保护处理，对上载内容本身不做任何修改或编辑。若文档所含内容侵犯了您的版权或隐私，请立即通知人人文库网，我们立即给予删除！