Gfrc Culture Stone,Imitation Marble Pattern Board,Imitation Dolomite Pattern Board,Imitation Brick Wall Cement Board Wonsail New Materials Technology Co., Ltd , https://www.wonsailcn.com Figure 1 shows a simplified diagram of the processing of the pinhole process in a factory. When the pin hole was originally machined, the outer wall was positioned, the wall thickness of the pin hole was determined, and then the pin hole was machined. The positioning is based on the positioning plate and the positioning nail, the workpiece is tightened by the cylinder, and the tail is pushed by a small cylinder until the outer wall of the workpiece contacts the positioning screw. But with a small cylinder
Improvement of pin hole processing