Why is woodworking machinery controlled by manual switch?

I can only say that you don't know much about woodworking machinery. Although it is not as good as high-tech industries such as automobile industry, it is not what you said. The manual switch you see is mainly used in traditional small workshops. Such as simple chain saws and planers, the biggest advantage is that they are cheap and can do jobs that cannot be done by hand. But you didn't see the production line of the automatic chemical plant, did you? You didn't see the dust-free workshop, did you? Cnc computer engraving machine, electronic sawing machine, etc. As my friend upstairs said, photoelectric and digital devices have been used in woodworking machinery many years ago, and photoelectric encoders, photoelectric switches and magnetic switches are nothing new in woodworking machinery industry. Some well-equipped manufacturers, such as edge banding machine and multi-row drill, basically use touch screen and plc control. CNC woodworking machinery and equipment have been widely used, and most woodworking production lines will think of the development of intensive automation in the future. If I remember correctly, many years ago, the information of "Qingdao Liangmu" recruiting electricians required proficient application of plc. Don't forget, Qingdao Liangmu doesn't produce woodworking machinery, but uses woodworking machinery. Presumably, woodworking machinery manufacturers will apply plc earlier, so please also ask friends to fully understand this industry.