| 摘要 |
A method for punching holes in a log, wooden pole or the like (3) for subsequent impregnation thereof, comprises the steps of introducing the log, pole, or the like into a punching machine, securing the log, pole, or the like in the machine, causing a plurality of punching units (5) to force their perforating elements (6) into the log, pole, or the like within a first peripheral area of said log, pole, or the like, pulling out the perforating elements from the log, pole, or the like, releasing the log, pole or the like in the machine, turning the log, pole, or the like over a predetermined angle and securing it once more, forcing the perforating elements into the log, pole, or the like within a second peripheral area of the log, repeating the punching cycle until the entire circumference of the log, pole, or the like is perforated, at least over a part of its length, and removing the log, pole, or the like from the punching machine. The novel features of the invention include sensing the diameter of the wooden pole, log (3) or the like and storing the measurement data in a computer designed to calculate the punching sequence, and a plurality of first piston means (15) causing their associated punching units (5) to abut against said log (3) or the like while exerting a certain pressure thereon, and by individually controlling the penetration of the perforating elements (6) by means of the computer and determining, by means of the computer, the turning angle of the log, or the like at each step of the punching cycle. |
