In the last issue of《Dimensional classroom》Li，Xiaowei took you to learn the operation of the one-key transfer function of the Vogler paver.，Current period《Dimensional classroom》Xiaowei will take you to learn Wittgen 2 m Two Common Zero Calibration Methods of Milling Machine in Construction Site，Commonly known as“Calibrate the knife”Two methods of。

As a device for depth control using an edge plate，The zero position of the milling drum is actually the lowest point of the milling drum、The road surface to be milled and the lower edge of the side plate are in the same plane.。In the milling process，Because the side plate is always located on the road surface to be milled and kept in a floating state，So the depth to which the milling drum cuts the pavement，That is, the distance between the lowest point of the milling drum and the lower edge of the side plate。

Before starting the milling operation，Pecially after the replacement of a new milling head，It is also necessary to set and calibrate the zero position of the milling drum。Milling zero calibration is divided into two methods: pre-construction calibration and in-construction calibration.，Mobile friends can choose according to the actual situation.，Next, follow Xiaowei to watch the detailed explanation of Mr. Liu of Wittgen China Technology Center.！

《Dimensional classroom》It is a video column produced by Wittgen China Technology and Training Center to introduce equipment operation and precautions.，Launch on a regular basis，I hope you will continue to pay attention.。In addition，If you have any questions you want to know, you can also send us a bullet screen or leave a message.。