Due to the impact of the COVID-19, the demand for many medical products has doubled, for example, the domestic demand for ventilators has reached 6 times. Voice coil motor ventilator is a device that can replace, control or change human physiological breathing, increase lung ventilation, improve respiratory function, reduce respiratory consumption, and save heart reserve. It is widely used in breathing caused by various reasons Failure, anesthesia and respiratory management during major operations, respiratory support diagnosis and treatment, and emergency recovery, occupy a very important position in the field of modern medicine.

      Voice coil motor (VCM) and neodymium iron boron magnet

     The voice coil motor is a special linear motor, which is a transmission device that directly converts electrical energy into linear or circular motion mechanical energy without any intermediate conversion mechanism. Voice coil motor has the advantages of small size, light weight, high acceleration and speed, uniform thrust, fast response, high precision, very simple structure, wide speed range, etc. It is mainly used in laptop computers, web cameras, video monitors, scanners, etc. Among the cameras of devices such as mobile phones, the main function is focusing, and the mobile phone is the most widely used VCM motor.

       The application fields of voice coil motors are quite extensive: electronic circuit surface assembly technology and semiconductor packaging fields. The voice coil motor is used in the occasion of joint displacement/force control, which improves the accuracy and efficiency. Vibration control and experiment. It can be used for shock and vibration experiments. It is a very important device for fatigue testing and testing the dynamic characteristics of mechanical structures; optical and electronic systems. It is widely used in the measurement field, microelectronics and optical tracking, scanning, aiming and positioning, and can precisely control the movement of equipment such as lenses. Such as the automatic adjustment of the camera focal length, the tracking control of the optical disc of the telescope and the mirror swing control, etc.; the use of the valve. Mainly use the very accurate characteristics of the linear motion of the voice coil motor to achieve the purpose of controlling and accurately positioning these devices, so as to realize the corresponding functions, such as the control of gasoline valves, breathing control valves, and valves that need to be accurately controlled in the hydraulic system. For machining, ordinary machine tools can generally only process rotating bodies with circular cross-sections. However, the use of high-thrust voice coil motors to drive the tool for radial high-frequency movement can realize the processing of irregular non-circular cross-section parts that are difficult to machine.