轴承滚针直径高速分选技术研究

发布时间：2018-05-08 09:29

本文选题：滚针直径 + 自动检测　；参考：《华中科技大学》2011年硕士论文

【摘要】：滚动轴承在机电设备中应用十分广泛，其性能的优劣对设备有着至关重要的影响。滚针直径的测量和分组是滚针轴承装配的关键工序之一，分组一般由专门的滚针分选机来实现，分组的精度将会影响到装配后轴承的性能。本文研究了一种高速、高精度的轴承滚针直径分选方法。为了实现轴承滚针直径的高速分选,本文优化了滚针上料、落料方式，，改进数据采集方法和机构驱动方式，从而缩短了滚针上料、运送、下料和滚针直径测量的时间。本文设计的系统由机械和测控两部分组成。系统机械部分主要包括滚针运送机构、测量机构、分组活门机构。滚针运送机构由伺服电机进行驱动，以间歇回转的方式进行滚针的高速运送。测量机构用于实现对传感器的固定和位置调整，并采用了平行片簧以保证测量精度。分组活门机构由回转电磁铁驱动，用于实现滚针的高速落料和分组。系统测控部分的设计基于Labview虚拟仪器平台，进行了硬件和接口设计，并编写了控制程序。系统由运动控制卡和伺服放大器实现伺服电机的运动控制，由电感传感器、电感测微仪和数据采集卡实现滚针直径信号的采集和转换。整个系统动作的协调，测量信号的处理和分组判断都由工控机负责。根据设计方案，本文研制出一台样机，对样机进行了测量精度和分选效率的实验，实验结果表明，本系统分选速度可以达到350件/分，重复测量精度为±0.9μm。同时，本文对系统的主要误差进行了分析。
[Abstract]:Rolling bearing is widely used in electromechanical equipment, and its performance has a vital impact on the equipment. The measurement and grouping of needle diameter is one of the key processes in the assembly of needle roller bearings. The grouping is generally realized by a special needle sorting machine. The accuracy of the grouping will affect the performance of the bearings after assembly. In this paper, a high-speed and high-precision separation method of roller diameter for bearing is studied. In order to realize the high speed separation of bearing needle diameter, this paper optimizes the feeding and blanking mode of the roller needle, improves the data acquisition method and the mechanism driving mode, thus shortens the measuring time of the needle feeding, transporting, unloading and needle diameter measurement. The system designed in this paper consists of two parts: machinery and measurement and control. The mechanical part of the system mainly includes needle roller delivery mechanism, measuring mechanism, grouping valve mechanism. The needle delivery mechanism is driven by servo motor, and the needle is transported at high speed by intermittent rotation. The measuring mechanism is used to fix and adjust the position of the sensor, and the parallel leaf spring is used to ensure the measuring accuracy. The grouping valve mechanism is driven by the rotary electromagnet and is used to realize high-speed blanking and grouping of the needle. The design of the system is based on the Labview virtual instrument platform. The hardware and interface are designed and the control program is written. The motion control of servo motor is realized by motion control card and servo amplifier. The signal acquisition and conversion of needle diameter are realized by inductance sensor, inductance micrometer and data acquisition card. IPC is responsible for the coordination of the whole system, the processing of measurement signal and the judgment of grouping. According to the design scheme, a prototype is developed in this paper, and the measurement accuracy and separation efficiency of the prototype are tested. The experimental results show that the separation speed of the system can reach 350 parts / min, and the precision of repeated measurement is 卤0.9 渭 m. At the same time, the main error of the system is analyzed.
【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】：TH133.33

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