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判断弹簧试验机的精度水平高低的因素有哪些?

来源: http://www.diannaothj.com    时间:2019-03-28 15:10:08 作者:山东银丰弹簧机设备

单片机的功用较简单的缺陷又被微机所改善,随着计算机技术的开展。智能化功用设置专家系统、参数选择、数据库、明晰的视窗中文界面、简单的鼠标操作,使弹簧测试过程中的理想化状态成为可能,智能化程度得到极大的进步,操作者只需悄悄点击鼠标,就能够按照预先设置的恣意形式停止丈量、控制,经过设定不同的实验速度、实验过程中的参数,使实验形式、整个实验过程能够按照人们意志停止控制,实验曲线和实验数据实时显现,实验数据亦可按行业标准或企业标准停止计算、整理、输出,还可对以往的实验过程、实验结果停止查询,强大的计算和数理统计功用替代了过去冗杂的工作,大大减轻了人的劳动量。
With the development of computer technology, the function of single-chip computer has been improved. Intelligent function setting expert system, parameter selection, database, clear window Chinese interface and simple mouse operation make it possible to achieve the most ideal state in spring testing process. Intelligent degree has been greatly improved. Operators can stop measuring and controlling according to preset arbitrary form by quietly clicking on the mouse, and through setting different experimental speeds. The degree and the parameters in the experiment process can make the experiment form and the whole experiment process stop controlling according to people's will, the experiment curve and the experiment data appear in real time, and the experiment data can stop calculating, arranging and outputting according to the industry standard or the enterprise standard, and can also stop inquiring about the past experiment process and the experiment result. The powerful function of calculation and mathematical statistics has replaced the past miscellaneous function. Work has greatly reduced people's workload.
由于位移的微小变化,便会惹起实验力的较大变化,而保证实验力的测试精度,很容易的事情,但是要保证弹簧实验机的另一参数位移的精度,保证弹簧测试精度的关键,也是判别弹簧实验机精度上下的标准。
弹簧机8
Because of the slight change of the displacement, it will cause a great change of the experimental force, and it is easy to ensure the accuracy of the test force. But to ensure the accuracy of another parameter displacement of the spring testing machine, the key to ensure the accuracy of the spring testing machine is also the criterion to judge the accuracy of the spring testing machine.
因而,越来越多的运用者,都把位移测试精度的上下当做权衡实验机程度上下的标准。弹簧实验机的国度标准中,位移精度的请求是很低的满足不了大刚度精细弹簧的请求,特别是大刚度精细弹簧的首要请求是设备的测试精度高,小负荷的弹簧。因而,对实验机制造商来说,必需进步位移测试精度来满足运用者的请求。影响位移测试精度的要素很多,如检测办法、整机构造、整机刚度、压盘的平行度、丈量元件、材料、负荷位移下沉等,只需对这些要素加以克制,位移精度的保证是不成问题的。
Therefore, more and more users regard the accuracy of displacement measurement as the criterion to weigh the degree of the experimental machine. In the national standard of spring testing machine, the requirement of displacement precision is very low, which can not satisfy the requirement of large stiffness fine spring. Especially, the primary requirement of large stiffness fine spring is the spring with high test precision and small load. Therefore, for the manufacturer of the experimental machine, it is necessary to improve the accuracy of displacement measurement to meet the user's request. There are many factors affecting the accuracy of displacement measurement, such as detection method, whole machine construction, stiffness of the whole machine, parallelism of pressure plate, measuring elements, materials, load displacement subsidence, etc. Only by restraining these factors, the guarantee of displacement accuracy is not a problem.
保证在实验力的满量程范围内,弹簧实验机检测是严厉按照标准对位移停止检测的可以保证弹簧放置在压盘的不同中央实验力根本分歧。恣意负荷都不会惹起负荷传感器的位移下沉。
To ensure that within the full range of the experimental force, the spring testing machine is strictly in accordance with the standard of displacement stop detection, which can ensure that the spring placed in the different center of the pressure plate experimental force is fundamentally different. The arbitrary load will not cause the displacement of the load sensor to sink.
另外,弹簧实验机的加载办法对实验结果影响敢是不容无视的早期的加载办法主要为普通交流电机带动传动系统加载,加载速度不可调整,关于弹簧网等弹性元件来说,由于回弹应力的存在快速紧缩时自动采集的数据与慢速紧缩或静止紧缩采集的数据差异很大,如今多采用变速系统如交流伺服调速系统、经过逼真的模仿弹簧的工作状态,真实丈量弹簧在这一状态下的内部应力,为弹簧设计提供根据。
In addition, the influence of the loading method of spring tester on the experimental results dare not be ignored. The early loading method is that the common AC motor drives the transmission system to load, and the loading speed is not adjustable. For spring mesh and other elastic components, the data collected automatically in the case of rapid compression due to the existence of springback stress are quite different from those collected in the case of slow compression or static compression, for example. Nowadays, variable speed systems, such as AC servo speed regulation system, are used to measure the internal stress of springs in this state by vividly imitating the working state of springs, which provides a basis for spring design.
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