支撑壳体的工艺工装夹具设计【钻4-φ7孔】【说明书+CAD】
收藏
资源目录
压缩包内文档预览:(预览前20页/共48页)
编号:75987084
类型:共享资源
大小:7.37MB
格式:ZIP
上传时间:2020-04-26
上传人:柒哥
认证信息
个人认证
杨**(实名认证)
湖南
IP属地:湖南
20
积分
- 关 键 词:
-
钻4-φ7孔
说明书+CAD
支撑
壳体
工艺
工装
夹具
设计
说明书
CAD
- 资源描述:
-
支撑壳体的工艺工装夹具设计【钻4-φ7孔】【说明书+CAD】,钻4-φ7孔,说明书+CAD,支撑,壳体,工艺,工装,夹具,设计,说明书,CAD
- 内容简介:
-
机械加工工艺卡片工件名称壳体工序号10零件名称壳体零件号零件重量同时加工件数1材料毛坯牌号硬度型号重量钢板HBS165-215铸件设备夹具辅助工具名称型号专用夹具卧式铣床X62安装工步安装及工步说明刀具量具走刀长度mm走刀次数切削深度mm进给量mm/z主轴转速r/min切削速度m/min基本工时min1铣宽28mm槽三面刃铣刀,卡尺510.237594.20.085设计者 周晓栋指导老师鲍虹苏共 1 页第 1 页机械加工工艺卡片工件名称壳体工序号11零件名称壳体零件号零件重量同时加工件数1材料毛坯牌号硬度型号重量钢板HBS165-215铸件设备夹具辅助工具名称型号专用夹具立式钻床Z525安装工步安装及工步说明刀具量具走刀长度mm走刀次数切削深度mm进给量mm/z主轴转速r/min切削速度m/min基本工时min1钻8孔麻花钻,卡尺2010.13145052.820.142锪孔11深8锪孔钻卡尺810.25145052.820.033钻M6螺纹底孔麻花钻卡尺1320.25575180.3844攻丝M6丝锥卡尺1320.2519513.42.1设计者 周晓栋指导老师鲍虹苏共 1 页第 1 页机械加工工艺卡片工件名称壳体工序号12零件名称壳体零件号零件重量同时加工件数1材料毛坯牌号硬度型号重量钢板HBS165-215铸件设备夹具辅助工具名称型号专用夹具立式钻床Z525安装工步安装及工步说明刀具量具走刀长度mm走刀次数切削深度mm进给量mm/z主轴转速r/min切削速度m/min基本工时min1钻12H7麻花钻,卡尺3610.1390030.530.362锪孔20深14麻花钻卡尺1410.25900150.076设计者 周晓栋指导老师鲍虹苏共 1 页第 1 页机械加工工艺卡片工件名称壳体工序号4零件名称壳体零件号零件重量同时加工件数1材料毛坯牌号硬度型号重量钢板HBS165-215铸件设备夹具辅助工具名称型号专用夹具立式铣床X51安装工步安装及工步说明刀具量具走刀长度mm走刀次数切削深度mm进给量mm/z主轴转速r/min切削速度m/min基本工时min1铣下端面端铣刀游标卡尺50120.2750141.30.44设计者 周晓栋指导老师鲍虹苏共 1 页第 1 页机械加工工艺卡片工件名称壳体工序号5零件名称壳体零件号零件重量同时加工件数1材料毛坯牌号硬度型号重量钢板HBS165-215铸件设备夹具辅助工具名称型号专用夹具立式铣床X51安装工步安装及工步说明刀具量具走刀长度mm走刀次数切削深度mm进给量mm/z主轴转速r/min切削速度m/min基本工时min1铣上端面端铣刀游标卡尺50120.2750141.30.44设计者 周晓栋指导老师鲍虹苏共 1 页第 1 页机械加工工艺卡片工件名称壳体工序号6零件名称壳体零件号零件重量同时加工件数1材料毛坯牌号硬度型号重量钢板HBS165-215铸件设备夹具辅助工具名称型号专用夹具卧室车床C6140安装工步安装及工步说明刀具量具走刀长度mm走刀次数切削深度mm进给量mm/z主轴转速r/min切削速度m/min基本工时min1镗30H7,48H7孔弯头镗刀游标卡尺8012.50.210008000.45设计者 周晓栋指导老师鲍虹苏共 1 页第 1 页机械加工工艺卡片工件名称壳体工序号7零件名称壳体零件号零件重量同时加工件数1材料毛坯牌号硬度型号重量钢板HBS165-215铸件设备夹具辅助工具名称型号专用夹具立式钻床Z525安装工步安装及工步说明刀具量具走刀长度mm走刀次数切削深度mm进给量mm/z主轴转速r/min切削速度m/min基本工时min1钻12麻花钻,卡尺4010.13900300.42钻M6螺纹底孔麻花钻卡尺1810.25575180.2083攻丝M6丝锥卡尺1810.2519513.41.33设计者 周晓栋指导老师鲍虹苏共 1 页第 1 页机械加工工艺卡片工件名称壳体工序号8零件名称壳体零件号零件重量同时加工件数1材料毛坯牌号硬度型号重量钢板HBS165-215铸件设备夹具辅助工具名称型号专用夹具立式钻床Z525安装工步安装及工步说明刀具量具走刀长度mm走刀次数切削深度mm进给量mm/z主轴转速r/min切削速度m/min基本工时min1钻4-7孔麻花钻游标卡尺50120.2750141.30.44设计者 周晓栋指导老师鲍虹苏共 1 页第 1 页机械加工工艺卡片工件名称壳体工序号9零件名称壳体零件号零件重量同时加工件数1材料毛坯牌号硬度型号重量钢板HBS165-215铸件设备夹具辅助工具名称型号专用夹具卧式镗床T616安装工步安装及工步说明刀具量具走刀长度mm走刀次数切削深度mm进给量mm/z主轴转速r/min切削速度m/min基本工时min1钻6-7孔麻花钻卡尺1060.131450300.0812锪孔6-14锪孔钻卡尺1610.251450150.066设计者 周晓栋指导老师鲍虹苏共 1 页第 1 页无锡职业技术学院机械加工工艺过程卡片产品型号零件图号产品名称零件名称壳体共1页第1页材 料 牌 号铸铁毛 坯 种 类铸件毛坯外形尺寸每毛坯件数1每 台 件 数1备 注 工 序 号 工 名 序 称 工 序 内 容 车间 工 段设 备工时/min准终单件10 铸造 铸 造铸工20 清沙 人工清沙30 时效处理 人工时效机加工40铣 铣下面机加工立式铣床X510.4450铣 铣上面机加工立式铣床X510.4460 镗孔 镗48H7孔,30H7孔机加工卧式车床C61400.4570钻孔 钻12孔,钻M6螺纹底孔攻丝M6机加工立式钻床Z5351.93880钻孔 钻4-7孔机加工立式钻床Z5350.4490钻孔,锪孔 钻6-7孔锪孔14机加工卧式镗床T6160.147100铣槽铣宽28mm槽深5mm机加工卧式铣床X620.085110钻螺纹底孔攻丝钻孔锪孔钻8孔,锪孔11深8,钻M6螺纹底孔,攻丝M6机加工立式钻床Z5352.654120钻孔,锪孔钻12H7,锪孔20深14机加工立式钻床Z5350.436设 计(日 期)校 对(日期)审 核(日期)标准化(日期)会 签(日期)标记处数更改文件号签 字日 期标记处数更改文件号签 字日 期 存档编码:无无锡锡太太湖湖学学院院 2012 届届毕毕业业作作业业周周次次进进度度计计划划、检检查查落落实实表表 系别:信机系 班级: 学生姓名: 课题(设计)名称: 开始日期:周次起止日期工作计划、进度每周主要完成内容存在问题、改进方法指导教师意见并签字备 注1-32011年11月7日-2011年11月27日教师下达毕业设计任务,学生初步阅读资料,完成毕业设计开题报告。按照任务书要求查阅论文相关参考资料,填写毕业设计开题报告书存在问题:对于实际操作不是很了解。改进方法:参与工作,逐渐了解,参与其中。意见和签名必须手写4-82011年11月28日-12月31日指导专业实训进行专业实训存在问题:动手能力不足改进方法:多请教专业师傅。意见和签名必须手写9-102012年1月9日-2月12日指导毕业实习实习并填写实习报告存在问题:没有实习经验改进方法:参与工作,逐渐了解意见和签名必须手写112012年2月13日-2月17日填写毕业设计开题报告填写毕业设计开题报告存在问题:对课题难易程度理解不够,难点分析不足,分析能力欠缺,许多问题不是很明白。改进方法:在指导老师的帮助下,进一步消化本课题。意见和签名必须手写122012年2月20日-2月24日检查毕业设计准备情况修改完善毕业设计开题报告存在问题:对课题难点分析不足,分析能力欠缺,对课题理解不深,头脑里没设计的东西的概念改进方法:在指导老师的帮助下,整改开题报告。意见和签名必须手写132012年2月27日-3月2日查阅参考资料查阅与设计有关的参考资料不少于10本,其中外文不少于2本存在问题:由于工作原因,空闲时间很少,查阅资料太少。改进方法:利用一切时间,去图书馆和网上查找相关资料意见和签名必须手写142012年3月5日-3月9日壳体加工工艺方案分析零件图,毛坯图,优选确定加工方案存在问题:缺乏实际操作经验,制定的工艺方案不合理。改进方法:多去咨询师傅了解实际生产过程,重新确立合理的工艺方案。意见和签名必须手写152012年3月12日-3月16日自己根据设计任务修改确定毛坯结构尺寸,计算所需个尺寸存在问题:夹具结构设计不合理,尺寸计算有误差公式运用错误。对模具设计数据不了解改进方法:查阅多种参考资料,改进模具结构,提高计算正确率。意见和签名必须手写162012年3月19日-3月23日自己修改分析毛坯图和零件图,优选夹具设计方案存在问题:缺乏生产经验,对加工顺序不了解,加工工序安排不合理。改进方法:多了解实际生产过程,重新确立合理的工艺方案意见和签名必须手写周次起止日期工作计划、进度每周主要完成内容存在问题、改进方法指导教师意见并签字备 注172012年3月26日-3月30日装配图初步绘制零件装配图存在问题:对CAD运用不熟悉,画图速度较慢。改进方法:重新确定合理的表达视图,多加运用绘图软件,提高画图速度。意见和签名必须手写182012年4月2日-4月6日装配图修改零件装配图存在问题:2D装配图中部分标准件画法不正确,尺寸不精确。改进方法:按机械制图要求改正不正确的画法,修改尺寸。意见和签名必须手写192012年4月9日-4月13日完成零件图修改零件图存在问题:2D装配图中技术要求填写不合理,明细栏填写不正确。改进方法:按机械制图要求改正不当之处。意见和签名必须手写202012年4月16日-4月20日说明书修改说明说存在问题:说明书格式不对改进方法:按学校要求修改说明书格式。意见和签名必须手写212012年4月23日-4月27日摘要,小结填写摘要小结存在问题:摘要内容不合理。改进方法:按论文定义摘要内容和小结。意见和签名必须手写222012年4月30日-5月4日英文翻译编写英文翻译存在问题:英文不熟练。改进方法:借助英文翻译字典翻译。意见和签名必须手写232012年5月7日-5月11日论文封面完成论文封面存在问题:论文封面格式不对。改进方法:按照要求修改封面格式。意见和签名必须手写242012年5月14日-5月18日检查、指导设计说明书、摘要和小结,加入说明书,完成说明书完成设计说明书存在问题:说明书的格式不规范,摘要不合理,关键词不恰当。改进方法:根据说明书规范要求更改,重新按要求编写摘要。意见和签名必须手写252011年5月21日-5月25日上交资料、答辩整理所有资料上交指导教师,答辩资料整理欠合理,按学院要求整理并装订,进行答辩意见和签名必须手写 说明: 1、“工作计划、进度”、“指导教师意见并签字”由指导教师填写,“每周主要完成内容”,“存在问题、改进方法”由学生填写。 2、本表由各系妥善归档,保存备查。1.新建零件图.如下图:2.选择需要作图的平面进入草绘界面如下图:3. 分析此零件发现该零件为非对称结构,所以需要将其拆分成若干图块分别绘制,首先绘制零件的底部圆柱体。如下图:4.草绘完成后进行拉伸完成圆柱体如下图:5. 上步完成后选择圆柱体的一平面为基准面进入绘制地盘圆柱体四周的小突起如下图:6.草绘后完成拉伸如下图:7.选择上步的草绘的基准面草绘圆如下图:8.拉伸切除后得到如图四个通孔如下图:9.选择上步草绘的基准平面草绘四个圆如下图:10.拉伸切除得到四凹槽如下图:11.底盘绘制完成后继续往上绘制壳体身部,选择上步使用的基准平面进行草绘如下图:12.拉伸草绘图形得到如下图结构如下图:13.选择刚拉伸圆柱的上平面为基准面草绘如下线条如下图:14拉伸后得到如下图所示:15.以上步得到的垂直平面为基准面草绘如下尺寸图形:16.继续拉伸得到下述图形17.选择侧平面为基准面草绘如下尺寸图形18.拉伸后得到下图19.以最上平面为基准面草绘上盘图形如下图:20.拉伸草绘图形得到上盘如下图:21.以上平面为基准草绘如下图:22.拉上上步草绘图形得到侧筋如下图:23.草绘加强筋平面如下图:24.拉伸加强筋如下图:25.草绘壳体中心阶梯孔如下图:26.拉伸阶梯孔如下图:27.以阶梯孔下平面为基准面绘制通孔圆如下图:28.拉伸通孔圆,得到如图通孔如下图:29.对阶梯孔外周进行倒角如下图:30.同上31.选取壳体侧平面为基准面草绘如下图:32.拉伸切除后得到如图凹槽如下图:33.选择壳体最上平面草绘圆位置如下图:34.拉伸切除圆形得到如下图柱孔:35.选择壳体背面平面为基准平面草绘如下图:36.拉伸切除草绘图形,得到如下图凹孔:37.以上步拉伸切除后成形的凹孔下平面为基准面草绘如下图尺寸圆:38.拉伸切除得到如下图凹孔:39.以壳体侧凸面为基准面草绘圆如下图:40.拉伸切除草绘圆得到如下图所示凹孔:41.以上步完成的凹孔下平面为基准面草绘如下图尺寸圆:42.拉伸切除草绘圆得到如下图所示孔:43.以壳体最上平面为基准面草绘如下图所示六个圆:44.拉伸切除草绘圆得到如下图所示六个通孔:45.以壳体顶盖背面平面为基准面草绘如下图所示圆46.拉伸切除草绘圆,得到如下图所示阶梯孔:47.以壳体侧平面切除面为基准面草绘如下图所示两圆:48.拉伸草绘圆:如下图:49.试用螺旋扫面切除命令绘制螺纹如下图:50.选择侧加强筋孔试用上步命令绘制螺纹如下图:最后安照图纸要求R角标准进行倒角,完成壳体三维绘图如下图:26无锡太湖学院毕业设计(论文)题目: 支撑壳体工艺工装设计 信机 系 机械工程及自动化 专业 学 号: 0923014学生姓名: 周晓栋 指导教师: 鲍虹苏 (职称:讲师 ) (职称: )2012年5月25日III无锡太湖学院本科毕业设计(论文)诚 信 承 诺 书本人郑重声明:所呈交的毕业设计(论文) 支撑壳体工艺工装设计 是本人在导师的指导下独立进行研究所取得的成果,其内容除了在毕业设计(论文)中特别加以标注引用,表示致谢的内容外,本毕业设计(论文)不包含任何其他个人、集体已发表或撰写的成果作品。 班 级: 机械91 学 号: 0923014 作者姓名: 周晓栋 2012 年 5 月 25 日此处签名要手写无锡太湖学院信 机系 机械工程及自动化 专业毕 业 设 计论 文 任 务 书一、题目及专题:1、题目 支撑壳体工艺工装设计 2、专题 二、课题来源及选题依据机械加工是一种用加工机械对工件的外形尺寸或性能进行改变的过程。广义的机械加工就是指能用机械手段制造产品的过程;狭义的是用车床(Lathe Machine)、铣床(Milling Machine)、钻床(Driling Machine)、磨床(Grinding Machine)、冲压机、压铸机机等专用机械设备制作零件的过程。 生产工艺是指在生产过程中,直接改变原材料(或毛坯)形状、尺寸和性能,使之变为成品的过程。 工序是工艺过程的基本组成单位。所谓工序是指在一个工作地点,对一个或一组工件所连续完成的那部分工艺过程。在生产过程中,为了确保加工的精确,经济效益,加工简易等,经常使用夹具。夹具是机械制造过程中用来固定加工对象,使之占有正确的位置,以接受施工或检测的装置。3、 本设计(论文或其他)应达到的要求:熟悉机械制造的历史,机械制造在国民生产中的重要性。熟悉夹具的作用,了解零件的工艺分析 了解毛坯的材料,探讨毛坯的加工基准选择方法学习加工工艺的安排,加工工时的安排学习制作夹具的方法学习CAD软件的制图方法四、接受任务学生: 机械91 班 姓名 周晓栋 五、开始及完成日期:自2013年11月7日 至2013年5月25日六、设计(论文)指导(或顾问):指导教师签名 签名 签名教研室主任学科组组长研究所所长签名 系主任 签名2011年11月7日 Cylinder block machining process design Engine parts engine block is a more complex structure of spare parts box, its high precision, complex process, and the processing quality will affect the overall performance engine, so it has become the engine manufacturers focus parts one.Technical Characteristics of the engine cylinder block Cylinder cast for a whole structure, and its upper part 4 cylinder mounting hole; cylinder standard cylinder is divided into upper and lower divisions into two parts; cylinder to the rear of the front-side arrangement of the previous three coaxial mounting hole of the camshaft and the idler axle hole. Cylinder process features are: the structure of complex shape; processing plane, more than holes; uneven wall thickness and stiffness is low; processing of high precision typical of box-type processing part. The main processing of the surface of cylinder block top surface, the main bearing side, cylinder bore, the main and camshaft bearing bore holes and so on, they will directly affect the machining accuracy of the engine assembly precision and performance, mainly rely on precision equipment, industrial fixtures reliability and processing technology to ensure the reasonableness.1.Engine block process design principles and the basis for Design Technology program should be to ensure product quality at the same time, give full consideration to the production cycle, cost and environmental protection; based on the enterprises ability to actively adopt advanced process technology and equipment, and constantly enhance their level of technology. Engine block machining process design should follow the following basic principles: (1) The selection of processing equipment ,the principle of selection adopted the principle of selection adopted the principle of combining rigid-flexible, processing each horizontal machining center is located mainly small operations with vertical machining center, the key process a crank hole, cylinder hole, balancer shaft hole High-speed processing of high-precision horizontal machining center, an upper and lower non-critical processes before and after the four-dimensional high-efficiency rough milling and have a certain adjustment range of special machine processing; (2) focus on a key process in principle process the body cylinder bore, crankshaft hole, Balance Shaft hole surface finishing and the combination of precision milling cylinder head, using a process focused on a setup program to complete all processing elements in order to ensure product accuracy The key quality processes to meet the cylinder capacity and the relevant technical requirements; According to the technological characteristics of automobile engine cylinder block and the production mandate, the engine block machining automatic production line is composed of horizontal machining center CWK500 and CWK500D machining centers, special milling/boring machine, vertical machining centers matec-30L and other appliances. (1) top and bottom, and tile covered only the combination of aperture rough milling machine dedicated to this machine to double-sided horizontal milling machine, using moving table driven parts, machine tools imported Siemens S7-200PLC system control, machine control cabinet set up an independent, cutting automate the process is completed and two kinds of automatic and adjust the state; (2) high-speed horizontal machining center machining center can be realized CWK500 the maximum flow of wet processing, but because of equipment, automatic BTA treatment system through the built-in tray under the wide-type chip conveyor and the completion of the machining center can be dry processing; machine tool spindle speed 6000r/min,rapid feeding speed 38m/min; (3) The combination of front and rear face rough milling machine tool using hydraulic transmission; control system imported Siemens S7-200PLC system control, machine tools have a certain flexibility; (4) The special machine TXK1500 this machine vertical machining center by the modification of shape, with vertical machining center features and performance, this machine has high strength, high wear-resistant, high stability, high accuracy, high-profile etc.; (5) high-speed vertical machining center matec-30L of the machining center spindle high speed 9000r/min.Control system uses Siemens SINUMERIK840D control system; (6) high-speed horizontal machining center spindle CWK500Dhighest speed 15000r/min.2.Engine block machining process design the main content Engine block complex structure, high precision, arge size, is thin-walled parts, there are a number of high precision plane and holes. Engine block machining process characteristics; mainly flat and the hole processing, processing of flat generally use planing, milling methods such as processing, processing of hole used mainly boring, processing and multi-purpose drilling holes. As the cylinder complex structure. so how to ensure that the mutual position of the surface processing precision is an important issue.3.1 The selection of blank Engine block on the materials used are generally gray cast iron HT150,HT200,HT250,there is also cast aluminum or steel plate, this engine block using high-strength alloy cast iron. Cylinder in the processing prior to aging treatment in order to eliminate stress and improve the rough casting mechanical properties. Improve the rough accuracy, reduction of machining allowance, is to improve the automated production line system productivity and processing quality of the important measures. As the foreign box-type parts of rough quality and high precision, and its production-line system has been implemented directly on the blank line, not only eliminating the need for blank check device also saves the rough quality problems due to waste of machining time, increase overall efficiency. Therefore, the refinement of rough is to improve the productivity of the most promising way out. For the engine block production line, can be rough in parts on-line pre-milling six face, removing most of the margin, to facilitate direct on-line parts.3.2 Machining process selection and processing of the benchmark Choose the right processing technology base is directly related to the processing quality can ensure the parts. Generally speaking, process benchmarking can be divided into coarse and fine reference base. (1) The baseline for the on-line thick rough, which is particularly important the choice of benchmark crude, if crude benchmark choice unreasonable, will the uneven distribution of machining allowance, processing and surface offsets, resulting in waste. In the cylinder production line, we have adopted for the coarse side of the base; (2) Refined the base of this box for the engine block parts, the general use of side two sales for a full range of uniform benchmarks, For the longer automated production positioning, therefore, will be divided into 2-3 segment pin holes used. In the cylinder pin hole of the process, we have adopted to the side, bottom and the spindle hole positioning, in the processing center on the process.3.3 Machining Processing Stages and processes of the arrangements Often a part of many apparent need for processing, of course, the surface machining accuracy are different. Processing of high precision surface, often after repeated processing; As for the processing of the surface of low precision, only need to go through one or two on the list. Thus, when the development process in order to seize the processing high precision surface, this conflict, the reasonable arrangement processes and rational division stage of processing. Arrange the order of the principle of process is: after the first coarse refined, the first surface after the hole, the first benchmark other. In the engine block machining, the same should follow this principle. (1) roughing stage engine block machining process, the arrangements for roughing process, to fully carry out rough rough, trim most of the margin in order to ensure production efficiency; (2) semi-finishing phase of the engine block machining, in order to ensure the accuracy of the middle of some important surface processing, and arrange some semi-finishing operations, will be required accuracy and surface roughness of the surface of the middle of some processing to complete, while demanding the surface of semi-finished, to prepare for future finishing; (3) The finishing stage of requiring high accuracy and surface roughness of the surface processing; (4) secondary processing, such as small surface screw holes, you can finish of the major surface after the one hand, when the workpiece deformation process little impact at the same time also reduced the rejection rate;In addition,if the main surface of a waste,these small the surface will not have to be processed,thus avoiding a waste of man-hours.However,if the processing is very easy for a small surface bumps the main surface,it should be placed on a small surface finish prior to the main surface finishing; (5) should make proper arrangements for secondary processes such as product inspection process,in part roughing stage,the key process before and after processing,spare parts all the processing has been completed,should be appropriate arrangements. Stage of processing division,has the following advantages:First,it can take measures to eliminate the rough workpiece after the stress,to ensure accuracy; second,finishing on the back,and will not damage during transport the surface of the workpiece has been processed;again,first roughing the surface defects can be detected early and promptly deal with rough,do not waste working hours.But most small parts,do not sub very thin.3.4 cylinder surface of the main processing and secondary processes Cylinder surface and support the main processing operations are: (1) plane processing at present, the milling of engine blocks is the primary means of planar processing,domestic milling feed rate is generally 300-400mm/min,and foreign 2000-4000mm/min milling feed rate compared to far cry,to be on increasing,therefore,improve the milling feed rate,reduce overhead time is to improve the productivity of the major means of finishing a number of plane engine block when the milling feed rate to reach 2399mm/min,greatly improved efficiency; Top surface of the cylinder milling is a key process in the process,the flatness requirements for 0.02/145mm,the surface roughness of Ra1.6um.Processing in the cylinder,the use of side and spindle bearing bore positioning,top,bottom and middle vagay only aperture while processing used in the processing line outside of the knife device can better meet the engine block machining accuracy; (2) General holes machining holes in general are still using the traditional processing of drilling,expansion,boring,reaming,tapping and other craft approach. Issues in the design process of specific programs,use of coated cutting tools,cutting tools and other advanced tools within the cooling,and using a large flow of cooling systems,greatly improving the cutting speed,improved productivity; (3) deep hole processing of the traditional processing method is used to grade twist drill feed,low efficiency of their production,processing and quality is poor.The deep hole in the engine block processing,the use of gun drilling process; (4) The three-axis machining holes for the cylinder-axis machining holes holes of high precision,long working hours of the restrictive process.Thus,work arrangements,processing methods,tools and so on should be special attention.All cover pre-processing,that is,semi-circular hole and the cylinder block main bearing cap of the shortage of processing,its main purpose is to remove blank margin,release stress,to prepare for the post-order processing;in crankshaft machining processing center hole,using double-sided Boring,boring the first holes in the crankshaft hole at one end to 1/2 length,and then turn 180 degrees workbench,form the other end and then bore another 1/2 length. (5) The cylinder bore machining cylinder hole cylinder machining processing is a key process in the one,under normal circumstances,the machining process as a rough boring,semi-fine boring,precision boring and honing.Cylinder bore wall for the early detection of casting defects,eliminate stress,should be thick cylinder boring holes in advance;due to the structural characteristics of the different cylinder bore,must be in honing process to improve the cylinder bore surface quality.In the high-volume production,the cylinder bore honing generally use the multi-axis grinding machine or honing Automatic Line.Here we use honing automatic lines,from the coarse-heng.Fine-heng and testing equipment,composed of three; (6) Cleaning cleaning isdivided into wet cleaning and dry cleaning.Machining cylinder automatic production line using a large flow of wet cleaning; (7) Detect points outside the line detection and line detection of two kinds. Quality inspection in the engine block,according to the actual situation with lines outside the detection,the main use of coordinate measuring machine integrated measurements of the cylinder,each 200 samples 1-5 pieces,each class random one.3.Summary Through the engine block of the structure and process characteristics of the analysis,discusses the engine block machining process design principles and basis of the choice of cutting parameters,and U-turn at high speed milling and boring,for example,design,analysis of the engine cylinder body of high-speed milling and turnover boring process,and in the processing need to pay attention to.加工工艺设计 缸体是零件中结构较为复杂的箱体零件,其精度要求高,加工工艺复杂,并且加工加工质量的好坏直接影响发动机整个机构的性能,因此,它成为各个发动机生产厂家所关注的重点零件之一。1.缸体的工艺特点缸体为一整体铸造结构,其上部有4个缸套安装孔;缸体的水平隔板将缸体分成上下两部分;缸体的前端面从到后排列有三个同轴线的凸轮轴安装孔和惰轮轴孔。缸体的工艺特点是:结构、形状复杂;加工的平面和孔比较多;壁厚不均,刚度低;加工精度要求高,属于典型的箱体类加工零件。缸体的主要加工表面有顶面、主轴承侧面、缸孔、主轴承孔及凸轮轴孔等,它们的加工精度将直接影响发动机的装配精度和工作性能,主要依靠设备进度、工夹具的可靠性和加工工艺的合理性来保证。2. 发动机缸体工艺方案设计原则和依据设计工艺方案应在保证产品质量的同时,充分考虑生产周期、成本和环境保护;根据本企业能力,积极采用国内外先进的工艺技术和装备,不断提高企业工艺水平。发动机缸体机械加工工艺设计应遵循以下基本原则:(1)加工设备选型原则 加工设备选型采用刚柔结合的原则,加工设备以卧式加工中心为主,少量采用立式加工中心,关键工序曲轴孔、缸孔、平衡轴孔加工采用高精度高速卧式加工中心,非关键工序上下前后四个平面的粗铣采用高效并有一定调整范围的专用机床加工;(2)集中工序原则 关键工序曲轴孔、缸孔、平衡轴孔的精加工缸盖结合面的精铣,采用在集中在一道工序一次装夹完成全部加工内容方案,以确保产品精度满足缸体关键品质的工艺性能和有关技术要求。根据汽车发动机缸体的工艺特点和生产任务要求,发动机缸体机械加工自动生产线由卧式加工中心CWK500和CWK500D加工中心、专用铣/镗床、立式加工中心matec-30L等设备组成。(1)顶底面及瓦盖止口面粗铣组合机床 本机床为双面卧式专用铣床,采用移动工作台带动工件,机床采用进口西门子S7-200PLC系统控制,机床设独立电控柜,切削过程自动化完成,有自动和调整两种状态;(2)高速卧式加工中心CWK500 该加工中心可实现最大流量的湿加工,但由于设备自动排屑处理系统是通过位于托盘下的内置宽式排屑器而完成,该加工中心可以进行干加工;机床主轴转速6000r/min,快速进给速度38m/min;(3)前后端面粗铣组合机床 机床采用液压传动;控制系统采用进口西门子S7-200PLC系统控制,机床具有一定的柔性;(4)采用机床TXK1500 本机床有立式加工中心改造而成形,具备立式加工中心的特点及性能,该机床具有高精度、高强度、高耐磨度、高稳定性、高配置等优点;(5)高速立式加工中心matec-30L 该加工中心主轴最高转速9000 r/min。控制系统采用西门子公司SINUMERIK840D控制系统(6)高速卧式加工中心CWK500D 主轴最高转速15000 r/min。3. 发动机缸体机械加工工艺设计的主要内容发动机缸体结构复杂,精度要求高,尺寸较大,是薄壁零件,有若干精度要求较高的平面和孔。发动机缸体机械加工的工艺特点是:主要是平面和孔的加工,加工平面一般采用刨、铣削等方法加工,加工
- 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。

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。