编制机械制造工艺规程中几种先进技术的综合应用 外文翻译 .doc

石材立式球磨机设计【全套21张CAD图纸和毕业答辩论文】

收藏

压缩包内文档预览:
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:10544183    类型:共享资源    大小:5.30MB    格式:ZIP    上传时间:2018-08-28 上传人:好资料QQ****51605 IP属地:江苏
50
积分
关 键 词:
石材 立式 球磨机 设计 全套 cad 图纸 以及 毕业 答辩 论文
资源描述:

【温馨提示】 购买原稿文件请充值后自助下载。

以下预览截图到的都有源文件,图纸是CAD,文档是WORD,下载后即可获得。


预览截图请勿抄袭,原稿文件完整清晰,无水印,可编辑。

有疑问可以咨询QQ:414951605或1304139763


摘  要

本次设计是对石材立式球磨机的设计。在这里主要包括:传动系统的设计、装夹部位系统的设计、球磨机主轴部位系统的设计这次毕业设计对设计工作的基本技能的训练,提高了分析和解决工程技术问题的能力,并为进行一般机械的设计创造了一定条件。

整机结构主要由电动机产生动力通过联轴器将需要的动力传递到丝杆上,丝杆带动丝杆螺母,从而带动整机运动,提高劳动生产率和生产自动化水平。更显示其优越性,有着广阔的发展前途。

本论文研究内容:

(1) 石材立式球磨机总体结构设计。

(2) 石材立式球磨机工作性能分析。

(3)电动机的选择。

(4) 石材立式球磨机的传动系统、执行部件及机架设计。

(5)对设计零件进行设计计算分析和校核。

 (6)绘制整机装配图及重要部件装配图和设计零件的零件图。 


关键词:石材立式球磨机, 联轴器,滚珠丝杠  



Abstract

This design is the design of vertical mill stone. Here mainly include: design, drive system design, parts of the clamping system of ball mill main part of the system design of the graduation design on the design of the basic skills training, enhancing the analysis and to solve engineering problems, and create a certain condition for general mechanical design.

The structure is mainly produced by the motor power through the coupling will need to transfer the power to the screw rod, the screw rod drives the screw rod nut, thereby driving the movement, improve labor productivity and automation level of production. But also show its superiority, there are broad prospects for the development.

The research of this thesis:

(1) the overall structure of stone vertical mill design.

(2) performance analysis of vertical mill stone.

(3) the choice of motor.

(4) transmission system, execution unit and frame design of stone vertical mill.

(5) the design of components for the design calculation and check.

(6) to draw the assembly drawing and parts assembly diagram and parts diagram design.



Keywords: coupling stone, vertical mill, ball screw


【温馨提示】 购买原稿文件请充值后自助下载。

以下预览截图到的都有源文件,图纸是CAD,文档是WORD,下载后即可获得。


预览截图请勿抄袭,原稿文件完整清晰,无水印,可编辑。

有疑问可以咨询QQ:414951605或1304139763


目  录

摘  要 II

Abstract III

目  录 IV

第1章 绪论 1

1.1异型石材的分类 1

1.1.1异型石材的分类 1

1.1.2按加工方法分 1

1.1.3按截面尺寸分 1

1.2异形石材的装饰效果 2

1.3异形石材加工的损耗介绍 2

1.4石材加工机械分类 3

1.5国内异形石材加工机械设备现状与发展 4

第2章 石材立式球磨机总体结构设计 1

2.1 石材立式球磨机的构成 1

2.2 球磨机磨削部分计算 1

2.2.1  同步带计算选型 1

2.2.2  同步带的主要参数(结构部分) 4

2.2.3  同步带的设计 6

2.2.4  同步带轮的设计 7

第3章  主轴组件要求与设计计算 9

3.1  主轴的基本要求 9

3.1.1  旋转精度 9

3.1.2  刚度 9

3.1.3  抗振性 10

3.1.4  温升和热变形 10

3.1.5  耐磨性 11

3.2 主轴组件的布局 11

3.3 主轴结构的初步拟定 14

3.4 主轴的材料与热处理 14

3.5 主轴的技术要求 15

3.6  主轴直径的选择 15

3.7 主轴前后轴承的选择 16

3.8  轴承的选型及校核 17

3.9  主轴前端悬伸量 19

3.10  主轴支承跨距 20

3.11  主轴结构图 21

3.12  主轴组件的验算 21

3.12.1  支承的简化 21

3.12.2  主轴的挠度 22

3.12.3  主轴倾角 23

第4章 X结构及传动设计 24

4.1 X向滚珠丝杆副的选择 25

4.1.1导程确定 25

4.1.2确定丝杆的等效转速 25

4.1.3估计工作台质量及负重 25

4.1.4确定丝杆的等效负载 25

4.1.5确定丝杆所受的最大动载荷 26

4.1.6精度的选择 27

4.1.7选择滚珠丝杆型号 27

4.2校核 28

4.2.1 临界压缩负荷验证 28

4.2.2临界转速验证 29

4.2.3丝杆拉压振动与扭转振动的固有频率 30

4.3电机的选择 30

4.3.1电机轴的转动惯量 31

4.3.2电机扭矩计算 32

第5章 Y向结构设计 34

5.1 Y轴滚动导轨副的计算和选择 34

5.2 滚珠丝杠计算和选择 35

5.3 步进电机惯性负载的计算 38

第6章  Z轴机械结构设计 41

6.1 确定脉冲当量 41

6.2滚珠丝杠螺母副的计算和选型 41

6.2.1 精度的选择 41

6.2.2丝杠导程的确定 41

6.2.3 最大工作载荷的计算 41

6.2.4 最大动载荷的计算 42

6.2.5 滚珠丝杠螺母副的选型 43

6.2.6 滚珠丝杠副的支承方式 43

6.2.7 传动效率的计算 44

6.2.8 刚度的验算 44

6.2.9 稳定性校核 45

6.2.10 临界转速的验证 46

6.3 步进电动机的选择 46

6.4 丝杠轴的校核 49

6.5 键的校核 50

6.6 轴承的校核 50

6.7  直线滚动导轨副的计算和选择 52

第7章  减速器机构的设计 55

7.1电机选择 55

7.1.1  计算输出轴的转矩 55

7.1.2  确定各轴传动比 57

7.1.3  传动装置的运动和动力参数 57

7.2齿轮设计与计算 59

7.2.1高速级齿轮设计与计算 59

7.2.2  低速级齿轮设计与计算 64

7.3 轴的设计与计算 68

7.3.1输入轴的设计与计算 68

7.3.2  中间轴的设计与计算 71

7.3.3输出轴的设计与计算 74

7.4 轴承的校核 76

7.4.1  输入轴上轴承寿命计算 76

7.4.2  中间轴上轴承寿命计算 77

7.4.3  输出轴上轴承寿命计算 78

7.5 键的选择和校核 80

7.5.1键的选择 80

7.5.2键的校核 80

结论 82

参考文献 83

致 谢 85




第1章 绪论

所谓异型石材:广泛的说,为除了石头板材(平板)以外的所有的其他的石材制成品,比如说是路沿石、柱子、柱头、雕刻、线条、台阶、台面、拱门、窗台、门框、石凳、石桌、洗手盆、车止石等等。

1.1异型石材的分类

1.1.1异型石材的分类

从大的分类可分为天然异型石材,人造石异型石材。从制作工艺分类由于异型石材制品可以指除了石头平板材以外的所有的石材制成品,所以其种类非常的繁多,分类也很多。

1.1.2按加工方法分

1).立体异型石材产品:包括立体的人像、动物、抽象、以及其他题材或造型的石雕品, 平面浮雕,带雕刻的柱子、柱头、柱座,雕刻家具,栏杆扶手,石头壁炉,花盆花瓶,墓碑,喷泉,带雕刻的窗套门套,工艺品等等。可以是规则的对称产品,也可 以是不规则的非对称产品。其中立体类的异型石材的加工方式主要方式是:劈、剁、磨、铲、凿、钻等,并可以是通过手工加工完成,或是采用机械化加工来实现。 

2).平面异型石材产品:如像是厨卫的台面板,常规的石材线条,水刀拼花板材,工作台面板和桌面,常规的路沿石,拐 角等等,其形状可以是对称的,也可以是不对称的。平面型的异型石材其加工相对来说比较简单,主要通过切、磨、抛光等简单的加工工序就能生产出来;其主要是 由机器加工完成的。

3).曲面板材产品:比如弧型板、圆柱、规则弧度的曲线线条等,其形状基本是对称的。曲面异型石材的加工也是相对来 说比较简单(会比平面异型石材难度大些),主要通过切、磨、抛等简单加工完成,但是其设备教先进,是专门用来加工曲线截面的(比如说金刚石绳锯),其主要 也是由机器加工完成的。

1.1.3按截面尺寸分

1).等截面异形产品:即无论主体的形状及其截面的是怎样的,按柱体轴线的垂直面来剖开,其所得的各截面图是相同的,即为等截面异形石材。等截面异形石材是一种对称的异型石材。 

2).非等截面异形产品:是指无论主体的形状及其截面的是怎样的,如果按柱体轴线的垂直面来剖开,其所得的各截面图是并没有处处相同的,则是非等截面异形石材。非等截面异形石材是非对称异型石材,其主要是有着复杂结构的石材产品。 

3.此外还有其他的一些分类方法。


内容简介:
毕业设计(论文)外文翻译编制机械制造工艺规程中几种先进技术的综合应用 所在学院: 班 级: 姓 名: 学 号: 指导教师: 合作导师: 年 月 日1原文:题目 Comprehensive Application of Several Advanced Techniques in Formulation Engineering Procedure of Mechanical ManufacturingAbstract:This paper introduced the basic methods of using GT and CAPP in formulation engineering procedure of mechanical manufacturing,put forward Viewpoints: take PDM systems integrated framework ,combine Auto CAD with CAPP,making the developing platform of CAPP develop towards uniform.Key words:Group technology GT; CAPP software; PDM technologyIn recent years, with the improvement of computer and network technology and application softwares development and promotion, more and more company used a variety of application software systems to improve producing design and production level and work efficiency. How to further improve (or an organic integration) used by the applications, and how to solve using a single application of the system functions when incompatibility issues, these will become the focus of attention of many to use side. In this paper, take the preparation of mechanisms for process planning for example, briefly describing and analyzing the current application of several advanced technologies basic method and its integrated applications, and discussing how to achieve computer-aided process design and software development platform for CAPP to a unified development. 1. Group Technology(GT)Group technology (GT) is to wide a variety of various single-piece and small batch production of spare parts, and according to its shape structure, technical requirements, processing methods of the similarity of the parts is divided into several groups. Then choose a representative part (which can actually exist, and also some of the hypothetical, but must include all parts of the processing group elements)in the selected parts of each group. According to the representative part of this process to develop a typical order and we select and design a set of machine tools and process equipment. And we unite them with a special construction section or workshop. When the processing of an object become from one part into another part within the same group, due to the similar of technical requirements, structure, process, you do not change the processing method and processing equipment, and even controlling the cam, block railways and industrial fixtures are do not change. It is simply to make adjustments, will be processing 1,2. According to production organize components into groups, we accord the parts of the structural characteristics, process characteristics and processing equipment characteristics to group, classification and code for each of the components, and then establish the typical components of each type of library and the processing technology of group library. Processing technology to develop parts in groups of two ways: 1) The virtual part method. In a parts group, the first we design a part of this group which can contain all the geometrical features of the virtual part, and require the tribe owns the processing of all the parts needed for processing the surface. Then we press the virtual part to technological design. That is the group technology of group parts. 2) The composite process route method. Firstly , we find a the most complicated structure, the longest part of process lines represented in the part family, and then join in the other parts which is 2representative and not processes in the family. Obtain a whole family to meet the processing requirements of complex parts process route. 2. Computer aided process planning CAPP 3 1 CAPP technology overview and the role of advanced manufacturing mode Machinery manufacturing process design is the most active factor of the production activities. It with production and business types, product mix, process equipment, production technology and technical management of the level of internal factors has inextricably linked. Process design is a strong empirical, technically demanding, a wide involving range of integrated disciplines. It is the bridge from design to product and an important position in the machinery manufacturing work occupies. It is changed by the time, places, conditions and other factors changed. For a long time, the working practices were prepared using the traditional manual method. As market competition intensifies and social needs diverse and individualized, making mechanical and electrical industry increasingly to multi-species, small quantities of direction. So does electrical equipment. Process design manual mode of operation neither meets the changing requirements of modern production breeds, nor matches with advanced means of production and management system. With the improvement and popularization of computer applications and the development of group technology, computer-aided process design techniques have emerged to become a modern process design and process management a powerful tool. CAPP development and research was begun from the last century began in the late sixties. In the field of manufacturing automation, CAPP s development in terms of relative CAD and CAM is the latest part. The worlds first study of CAPP countries are Norway in 1969, and in 1969 Norway launched the worlds first a CAPP system AUTOPROS; in 1973, Norway officially launched the commercialization of AUTO PROS system. In the CAPP history , a landmark of the CAM-I introduced CAMIS Automated process planning system in 1976. We use the first letter of prefix, called the CAPP system. Currently, although there are different interpretations of law about the acronym CAPP, called the Computer-Aided Process Planning as CAPP has become the accepted interpretation. With the level of machine production technology development and market demanding, Computer Aided Process Planning (CAPP) as the bridge of connectivity product design (CAD) and manufacturing (CAM) links product design and production management (MRPII / ERP), and organize production and ensure product quality, improve labor productivity, shorten production cycles resulted in more and more direct impact. Replacing the CAPP to the traditional process design has become a necessity and the importance of its machinery manufacturing industry, reflected in the following points: (l) it liberates the people of the original design, and make new products, new processes and new technology development. (2) It shortens the design cycle to ensure design quality, and increase market competitiveness. (3)It has strong inheritance standardization process design and optimization is improved. (4) It is a key link to achieve the integration of CAD and CAM manufacturing systems and establishing in CIMS. 2 Computer-Aided Process Design Objectives and Scope 2.1 CAPP application status in China Computer-aided process design is not only a connecting bridge between CAD and CAM, but also one of the technical bases in a number of advanced manufacturing systems. After the inception of CAPP technology, its research and development work has been booming at home and abroad, and it 3gradually attracted more and more attention. 1 From then on, at home and abroad in the CAPP technology research and system development people has invested a lot of money and manpower in the CAPP technology research and system development , and they has developed a large number of CAPP systems. In the developed CAPP system, some systems have been the practical application, and a few have been commercialized. But, CAPP research and development have serious deviations. From the application point of view, it has been made of the actual benefits and do not commensurate with the strength of inputs: the focus of research at home and abroad and present a far cry from the actual demand. Manifested as follows: to develop more, the application less; development of multi-input, application maintenance almost no input; prototype system more than the practical application of the system to be less; commodity systems are few and insufficiency; with CAD, CAN, MIS (Management Information System, Management Information Systems), PDM and other related computer-aided technique compared to the gap is quite big. The reason is mainly manifested in: First of all, goals of CAPP research and development has great one-sided that the pursuit of process automation of over-generation. In fact, the process design is a very complex process, involving a large number of complex elements, and the problems of the technological aspects are uncertain. And this determines the automated generalization CAPP is also impossible. Secondly, CAPP System is too narrow in scope. Research and development of CAPP does not research product CAPP application and integration issues from the perspective of the entire, and neglect of process management functions. In the enterprise, all production activities have been launched around the product structures, and a product of the production process is actually all the attributes of this product generation process. Therefore, only product-based CAPP system adapts to the structure of enterprise production environment. Third, the companies have an inadequate attention for CAPP practicality and easy using, and a lot of CAPP system fills in a purely word-processing card, or a simple database interface. It does not meet the technology staff habits and fails to improve efficiency. Fourth, the lacks of process data management capabilities just fill out a card craft a tool, rather than process data platform. From the enterprise management perspective, other types of fixed statistical summary of features (tooling equipment, materials and accessories and spare parts, working hours) and different versions of a variety of products (in various stages of process documentation and tooling, tools, document archiving and changes to other products process management) occupies an important position; business processes spend much of staff time on process the data summary statistics, such as duplication of work completed. It is not only inefficient, but also difficult to process information and documents to ensure accuracy, consistency. Fill-style craft card software can not meet that these very important process data management. 2.2 CAPP Computer Aided Process Design Objectives and Scope According to CAPP development and application of the above analysis, it not only is necessary to fit Chinas current situation, but also take into account the needs of development and do not sacrifice. One more important thing is to play good for the system integration role as a bridge and prevent unnecessary rework. It should be done to the following points: (1) process is designed to guide enterprise basic information. For them to optimize production and operation, you must optimize the 4process information first. So CAPP must provide the production and operation optimization, norms, standards, process information for laying the foundation about business production and optimal operation. (2) At present, 95% enterprises of Chinese use the general machine tools, so the development of CAPP must read the output of the current business process of order, process or operation of the card manually, as well as relevant technical documents. (3) CAPP has to provide technical information system and management information systems (MRP) necessary to machine information, which can meet the plant computer systems data sharing, and system integration requirements. 3. CAPP trends Process of domestic enterprises due to the diversity of programming standards, resulting in the current CAPP software development standards are not uniform .Its resulting in CAPP software and CAD / CAM software compatible with the difficulties. So, the CAPP will be a unified software development, and it platforms for the future development trend. Product Data Management PDM (Product Data Management) technology as an emerging technology, it appears for people to open a new way of thinking. With PDM system as the integration framework, the existing traditional applications such as Auto CAD and CAPP organic integration, when CAD、 CAPP system will become an integral part for product development of the general context. PDM system not only manages the product from structural design to process design and the resulting need all the information, but also provides a unified coding standard the structure of the product design to process design; it becomes smoother flow of information to ensure and share the unity of the data. 4. Conclusion PDM system connects CAPP and CAD/CAM systems, and it is the key technologies of the development of computer integrated manufacturing. With the development and advanced manufacturing technology of scientific and technological, enterprise will be further development and application of PDM systems. It not only solves the difficulties of compatible CAPP software and CAD / CAM software effectively, but also improves the application level and efficiency of CAPP and CAD / CAM system. It lays a solid foundation to follow-up to the implementation of PDM and ERP, and realizes the standardization, systematic, information technology of technology sector gradually. It improves the economic efficiency of production and provides a strong guarantee for product development of the enterprises. References 1 Zhang Shi Chang. Machinery Manufacturing technology base M. Tianjin: Tian Jin University Press, 2002. 2 Wei Jian Mei. Structural parts manufacturing technology M. Beijing: Science Press, 2002. 3 GAN Ren Chu. The organization and management of information resources M. Beijing: Mechanical Industry Press, 2005 5译文:题目 编制机械制造工艺规程中几种先进技术的综合应用 摘要:介绍了编制机制工艺规程中应用成组工艺GT和CAPP的基本方法,提出以PDM系统作为集成框架,将传统应用软件Auto CAD与CAPP进行有机集成,使CAPP软件的开发平台趋向统一的发展方向。关键词:成组工艺 GT; CAPP 软件; PDM 技术近年来,随着计算机及网络技术的不断发展和应用软件的开发推广,越来越多的企业已经使用各种应用软件系统提高产品的设计生产水平和工作效率。但是怎样进一步完善( 或有机地集成) 所使用的应用软件,如何解决使用单个应用软件时出现的系统功能的不兼容问题,便成为许多使用方关注的焦点。本文以编制机制工艺规程为例,简要介绍和分析目前应用的几种先进技术的基本方法及其综合应用,并讨论使计算机辅助工艺设计与CAPP软件的开发平台趋向统一的发展方向。一、成组工艺GT成组工艺GT(Group Technology)是把品种繁多的各种单件小批量生产的零件,根据其外形结构、技术要求、加工方法的相似性,把零件分成若干组,在每一组零件中选出一个代表性零件(可以是实际存在的,也可是假想的,但须包括组内所有零件的加工要素),根据这个代表零件制定出典型的工艺规程,选定和设计一组机床及工艺设备,并把它们组成一个专门的工段或车间。当加工对象由一种零件转变为同组内另一种零件时,由于技术要求、结构、工艺的相似,可以不改变加工方法和加工设备,甚至连控制用的凸轮、挡铁及工夹具都不用更换,或者只需略做调整,便可加工生产 1,2 。按成组方式组织零件生产时,按零件的结构特征、工艺特征与加工设备特征,将各零件进行分组、归类与编码,然后建立每类零件的典型图库和成组加工工艺库。制定零件成组加工工艺的方法有两种: 1) 虚拟零件法。在一个零件组中,先设计一个能够包含这组零件全部几何特征的虚拟零件,要求其拥有这个加工族中全部零件需要加工的表面,然后按这个虚拟零件进行工艺设计,即为该组零件的成组工艺。2) 复合工艺路线法。在零件族内先找出一个结构最复杂、工艺路线最长的零件作为代表,然后将族内其他零件中有代表性而没有工序的也加入进去,从而获得一条满足全族零件加工要求的复合工艺路线。二、计算机辅助工艺设计CAPP 31 CAPP技术的发展概况与在先进制造模式中的作用机械制造中的工艺设计是企业生产活动中最活跃的因素,它与企业的生产类型、产品结构、工艺装备、生产技术及企业内部的技术管理水平等因素有着密不可分的联系。工艺设计是一门经验性强、技术要求高、涉及面广的综合性学科。它是从设计到产品的桥梁,在机械制造工作中占有重要地位。它因时间、场合、条件等多方面因素的改变而改变。长期以来,工作手法都采用传统的手工编制方式。随着市场竞争的加剧和社会需求的多样化、个性化,使得机电行业越来越向多品种,少批量的方向发展,电机制造也是如此。工艺设计的手工作业方式已不能适应现代生产品种多变的要求,也不能与先进的生产手段、管理体制相匹配。随着计算机应用的普及和提高以及成组技术的发展,计算机辅助工艺设计技术应运而生,成为现代工艺设计和工艺管理的强有力工具。CAPP的开发、研制是从上个世纪六十年代末开始的,在制造自动化领域,CAPP的发展相对6CAD和CAM而言是最迟的部分。世界上最早研究CAPP的国家是挪威,始于1969年,并于1969年正式推出世界上第一个CAPP系统AUTOPROS;1973年正式推出商品化的AUTO PROS系统。在CA PP发展史上具有里程碑意义的是CAM-I于1976 年推出的CAMIS Automated process planning系统。取其字首的第一个字母,称为CAPP系统。目前对CAPP这个缩写法虽然还有不同的解释,但把CAPP称为计算机辅助工艺设计已经成为公认的释义。随着机械制造生产技术水平的发展及市场需求,计算机辅助工艺设计(CAPP)作为连接产品设计(CAD)与制造(CAM)的桥梁,以及连接产品设计与生产管理 (MRPII/ERP)的重要纽带,对组织生产,保证产品质量,提高劳动生产率,缩短生产周期等产生了越来越直接的影响。用CAPP代替传统的工艺设计已成为必然,它对机械制造业的重要意义表现在下列几点:(l)解放出原有设计人员,进行新产品、新工艺和新技术的开发。(2)缩短设计周期,保证设计质量,提高产品的市场竞争能力。(3)继承性强,工艺设计的标准化和最优化得到提高。( 4 )是实现CAD与CAM的集成制造系统和建立CIMS的关键环节。2 计算机辅助工艺设计的目标与范围2.1 CAPP在我国的应用现状计算机辅助工艺设计作为连接CAD与CAM的桥梁,也是许多先进制造系统的技术基础之一。CAPP技术从它诞生以来,其研究开发工作一直在国内外蓬勃发展,而且逐渐引起越来越多的人们的重视。 1迄今为止,国内外在CAPP技术研究与系统开发已投入大量的资金与人力,已开发出为数众多的CAPP系统。在所开发的CAPP系统中,有些系统已得到实际应用,少数已商品化。但总的来看,CAPP的研究、开发方向存在严
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:石材立式球磨机设计【全套21张CAD图纸和毕业答辩论文】
链接地址:https://www.renrendoc.com/p-10544183.html

官方联系方式

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   
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!