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Development of Sorting Machine with Laser Measuring Cylindrical Roller Diameter and Finite Element Analysis of the Key Components

作者: 专业:机械制造及其自动化 导师:王续跃 年度:2010 学位:硕士  院校: 大连理工大学


Cylindrical Roller, laser Sensor, Error Analysis, ANSYS Analysis, Sorting Machine

    Rolling bearing is made up of inner ring, out ring, rollers and cage. Rollers are the most important component for rolling bearing and exist rolling friction between crankshaft and bearing due to it. It play an important role in the lifetime of bearing except innner ring in thoery. So improving the machining accuracy and selecting rollers by grading are the major work to inhance the ability of bearing manufacuring.In this field, adopting micrometer caliper is applied to select roller at first, and is the longest period method. But with the increasing of roller output, the traditonal method is not aviable to use in current time.Thus developing a new kind of machine is the need of many factories and research institution. After a long time development, its selecting efficiency raise from 50-60 units to 100-120 units per minute, and measuring size achieve to 30 micrometer. Because of these change, automation level have a great change. Although the development of sorting machine have experienced much feform, there are still lots of disadvantages, for example, narrow size extent. Developing a new kind of set which is more automatic, humanity and high efficiency is the major research direction.Development of Sorting with Laser Measuring in Cylindrical-Roller Diameter is from bearing industry, which work is to design a new machine used to selecting different diameter rollers to satisfy the need of customers. The primary work of the article as following:(1) In masuring field, after finding the drawback that is marrow size extent, this machine adopts a different method which make use of laser sensor to get the diameter of rollers to come true non-contact measuring.(2) Designing the structure of machine, and meet the need of customer. This set adopts a 5 degree inclined plane and air cylinder movement to complete automatic feeding, and takes advantage of laser sensor to obtain its diameter. After measuring, rollers will be transferred to a specific location, with that go into the box along the pipe with the help of high-pressure gas.(3) Besides, we make an analysis about error oucurred in measuring procedure due to random error, measuring process error, system error, and figure up the value of it,and give some advices to aviod or decrease it. (4) Making ansysis of the most important parts with finite element techonology to optomize structure, at the same time, it can test the result of design and achieve the customer’s purpose.Due to using non-contract measurement can reduce error existence, using transport in double rows can improve sorting speed to 120-150 emp, it will satisfy rapid, accuracy sorting demand.


1 绪论9-16
    1.1 技术背景9-11
    1.2 国内外轴承圆柱滚子分选机研究的现状11-15
    1.3 研究内容15-16
2 圆柱滚子激光测量原理16-23
    2.1 激光在尺寸测量中的应用16-20
        2.1.1 激光传感器及特点16-17
        2.1.2 激光进行尺寸测量的工作原理17-20
        2.1.3 激光在尺寸测量中的应用举例20
    2.2 圆柱滚子激光测量工作原理20-23
        2.2.1 测量原理20-21
        2.2.2 激光测量圆柱滚子的优点21-23
3 圆柱滚子激光测量分选机结构设计23-46
    3.1 产品功能需求分析23-25
    3.2 设计方法选择和产品方案设计25-28
        3.2.1 传统的机械设计过程25
        3.2.2 现代机械设计方法及选择25-26
        3.2.3 产品方案设计26-28
    3.3 分选机模块化分析28
    3.4 分选机结构设计28-44
        3.4.1 送料模块设计29-34
        3.4.2 测量模块设计34-36
        3.4.3 分料模块设计36-38
        3.4.4 传送模块设计38-40
        3.4.5 落料模块设计40-43
        3.4.6 机架模块设计43-44
    3.5 设备总体结构示意图44-45
    3.6 本章小结45-46
4 测量误差分析及误差消除方案的提出46-56
    4.1 误差分析的要素46-47
    4.2 随机误差47-50
        4.2.1 激光传感器的随机误差47
        4.2.2 被测物体热膨胀引起的误差47-48
        4.2.3 被测物体的颜色引起的误差48
        4.2.4 被测物体表面粗糙度引起的误差48
        4.2.5 被测物体尺寸产生的测量误差48-50
    4.3 系统测量误差50-55
        4.3.1 测量环境中杂质引起的误差50-53
        4.3.2 传感器定位引起的误差53-55
    4.4 本章小结55-56
5 测量工作台的静力学和模态分析56-65
    5.1 静力学和模态分析在结构设计中的应用56-57
    5.2 静力学和模态分析的求解步骤57-58
    5.3 测量工作台的静力学分析及结构优化58-63
        5.3.1 模型的建立59
        5.3.2 网格划分59-61
        5.3.3 模型加载及添加约束条件61
        5.3.4 变形量运算结果61-63
    5.4 测量工作台的模态分析63-64
    5.5 本章小结64-65



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