Author: Shi Xinhua Source: far Extension Technology In our lives, it is full of various vibrations. Cars vibrate, appliances vibrate, and even small razors vibrate. In large factories and other places, vibration is even more ubiquitous. The most obvious is that there is vibration when cutting its parts on a metal cutting machine. The forces on a general process system include a variety of combined forces. These combined forces act on machine tools and other machines, causing them to produce a certain amount of elastic deformation, causing vibration in the process system. This type of vibration is mainly divided into three types: free vibration, forced vibration and self-excited vibration. Among the three types, the most important is self-excited vibration. Without the periodic action of external forces, the periodic vibration generated by the interaction of the internal excitation and feedback of the process system is called self-excited vibration. Self-excited vibration is generated without external periodic excitation force, and its formation and persistence are based on the excitation and feedback generated by the process itself. In the lathe work, this kind of vibration is very unfavorable to the processing, so it should be prevented and eliminated during the cutting process. So what method is used to prevent and eliminate it has become a major problem faced by major enterprises ... In response to the above problems, Nanjing Yuantuo Technology Co., Ltd. developed a vibration monitor. This vibration monitor is an instrument that specifically monitors the vibration frequency of important equipment with high precision. This product can monitor the precision equipment 24 hours a day. If the vibration frequency of the equipment is beyond the normal range, the vibration monitor can immediately give an alarm, so that the user can minimize the loss. The YT-SHK vibration monitor developed by Yuantuo has a bright switch signal, omnidirectional detection, adjustable detection sensitivity, adjustable alarm time and distance, and adjustable detection direction. The vibration monitor contains a dedicated control chip and vibration analysis circuit. It has a variety of output methods, and the output period can be set from 2 seconds to 180 seconds. Including switch output, voltage output, and normally open and normally closed output selection. Can directly drive the siren, police lights or linked lights, telephone dialer. And can adjust the sensitivity and delay time, very easy to use. Because this series of devices work in the solid state detection mode, there is no adverse phenomena such as mechanical fatigue, reduced sensitivity, false triggering and the influence of ambient humidity and temperature, and they have good consistency. This product is also a full-fangxin solid-state control device that combines vibration and displacement detection. It is currently the best choice for vibration alarm and status detection. The sensing part adopts the most advanced solid-state acceleration detection device at present, which not only has high detection sensitivity to vibration, but also suppresses the sound signal of the surrounding environment, has a strong interference ability, and can be widely used in ATM machines, walls, and insurance Anti-theft devices in cabinets, warehouse doors and windows, motor vehicles, etc. However, some fake vibration monitors on the market are not so accurate. They sense the vibration signal by shaking the hammer fixed on a spring. When the vibration reaches a certain amplitude, the hammer hits the metal plate next to it. , Forming a closed circuit current, so as to judge that a vibration occurs, this vibration is easy to miss a lot of destructive vibrations in principle, and it is easy to produce false alarms, not to mention the collection of vibration data, and there are some fake vibration sensors The spring and hammer are miniaturized and packaged into an integrated circuit, but no matter what form it takes, it cannot collect vibration data. This is the most essential difference between true and false vibration sensors. Nanjing Yuantuo Technology Co., Ltd. http: // Contact: Mr. Shi Telephone QQ Shenzhen Guohui Craft Products Co.,Ltd is one of white hair manufacturer in the filed of thermoformed hard EVA Headphone Case, Eva Camera Case , EVA Speaker Case, Eva Earphone Case, EVA Tool Case , eva storage case in China. The products can be used for the packaging of electronic accessories, first aid products, life-proof products, and other products which you want to make a better protection, easy carrying and lightweight. Leather Headphone Case,Headphone Carrying Case,Eva Headphone Case,Zipper Closure Headphone Case Shenzhen Guohui Craft Products Co.,Ltd. , https://www.evacarrycase.com
Self-excited vibration is the "natural enemy" of precision machine tools
Yuantu YT-SHK type vibration monitor