光学玻璃块自动称重分选机研究

发布时间：2018-05-03 09:51

本文选题：光学玻璃块 + 自动称重　；参考：《华中科技大学》2011年硕士论文

【摘要】：光学玻璃是制造光学仪器关键部件的重要材料。光学玻璃块的重量直接关系到光学镜片的厚度、曲率及半径等,从而影响光学仪器的质量。随着生产效率的不断提高,手动称重分选开始满足不了生产需求,研究一种高精度、高速度的自动称重分选技术成为迫切需求。因此,本文进行了光学玻璃块自动称重分选机的技术研究。本文制定了分选机的系统方案,包括机械系统和测控系统两部分。分选采用差动称重原理,能有效控制零漂现象,实现高精度测量。完成了分选机机械系统的结构设计和装配,主要包括:上下料机构、称重机构和分组机构等。上下料机构基于皮带传动实现,称重机构和分组机构基于气动技术实现。完成了分选机测控系统的硬、软件设计。硬件系统主要包括动作程序控制、测量系统和I/O接口三个部分。动作程序控制通过PLC控制机械动作;测量系统完成称重信号的采集和处理; I/O接口实现PLC与工控机间的通讯,PLC控制工控机采样,工控机通知PLC分组结果。工控机软件基于LabVIEW开发完成,并给出了适应自动生产线现场结果显示、调试操作、故障报警等友好的人机界面。分选机使用情况表明:该系统测量精度为±0.02g,工作节拍小于2s/件,分组准确,达到了预期的设计目的,能实现高精度、高效率、低破损率的自动分选,满足光学玻璃块自动称重分选的要求。
[Abstract]:Optical glass is an important material for making the key parts of optical instruments. The weight of optical glass is directly related to the thickness, curvature and radius of optical lenses, which affect the quality of optical instruments. With the continuous improvement of production efficiency, manual weighing separation begins to meet the demand of production, and studies a high precision and high speed automatic. Weighing and sorting technology has become an urgent need. Therefore, this paper has carried out the technical research of automatic weighing and sorting machine for optical glass block.
In this paper, the system scheme of the separator is formulated, including the two parts of the mechanical system and the measurement and control system. The differential weighing principle is selected and the zero drift phenomenon can be effectively controlled and the high precision measurement can be realized.
The structural design and assembly of the mechanical system of the separator are completed, including the feeding mechanism, the weighing mechanism and the grouping mechanism. The upper and lower feeding mechanisms are based on the belt transmission, and the weighing mechanism and the grouping mechanism are based on the pneumatic technology.
The hardware system is composed of three parts: action program control, measurement system and I/O interface. The action program controls the mechanical action through PLC; the measurement system completes the acquisition and processing of the weighing signal; the I/O interface realizes the communication between the PLC and the industrial control machine, the PLC controls the sampling of the industrial control computer and the working process. The control machine notifications PLC group results. The industrial control computer software is based on the LabVIEW development, and gives the friendly man-machine interface which is adapted to the field results display, debugging operation, fault alarm and so on.
The use of the separator shows that the measuring precision of the system is + 0.02g, the working rhythm is less than 2s/, the grouping is accurate, the desired design goal is achieved, the automatic sorting of high precision, high efficiency and low breakage rate can be realized, and the requirement of automatic weighing and sorting of optical glass block can be met.

【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH237.5

【参考文献】