Voice coil motors are mainly used in the following areas:
First, the field of optical systems
Voice coil motors and linear motors are widely used for optical scanning, positioning, aiming, tracking and stabilization in the fields of optics, microelectronics and measurement, with precise motion control of lenses or mirrors. For example, automatic focusing of cameras, digital cameras and microscopes, dynamic focusing of the Z-axis of laser cutting equipment, focusing and tracking of optical disc drives, and yaw control of fast mirrors in astronomical telescopes.
Second, the field of semiconductor equipment
High-speed, high-precision motion control is required in most applications in semiconductor manufacturing and packaging. The excellent characteristics of the voice coil motor just meet these needs. It is used in equipment such as dispensers, wire bonders, PCB drills, lithography machines, wafer pick-and-place, and component inspection.
Third, the field of vibration control
One is used as a vibration source, that is, an excitation device.
The electric vibration exciter is a common equipment for performing vibration and impact tests, performing mechanical structure dynamic characteristic testing and fatigue testing. Generally, the small exciter is mostly made of permanent magnet type, and the larger type of exciter (ie, vibrating table) is mostly used. Excitation type.
The other is used as a damper, that is, to eliminate the adverse effects of vibration.
The electric shock absorber can absorb the vibration energy of the vibration system by actively applying a suitable damping force to offset or reduce the excitation force, thereby reducing or isolating the transmission of the vibration.
Fourth, the field of linear compressors and control valves
The linear compressor can directly eliminate the wear, vibration and noise caused by the lateral force between the piston and the cylinder after the direct drive of the linear motor is used. It is widely used in refrigerators and Stirling refrigerators. In the device. Voice coils/linear motors can also be used for precision control valves in industrial and medical equipment, such as automotive engine valves, electro-hydraulic servo valves, auxiliary breathing pressure control valves and blood circulation auxiliary pumps.
Fifth, the field of mechanical processing
Ordinary lathes can only process round-section rotary parts, and it is difficult to machine parts with non-circular sections. By using a large thrust linear motor to directly drive the tool for radial high-frequency reciprocating motion, the machining of non-circular cross-section parts can be realized.
