滾製螺纹的丝板,普通是铣床上铣製的。但因為以摇手柄來控制節距的差誤很大,所以我们廠內便應用一種简單而比较正確的方法来工作。現在寫在下面,供同志們的参考: 先在精密車床上車製一付螺桿和螺帽,其每吋牙数與原來所需的牙数相同。直徑不妨大 Rolled thread plate, usually mill milling. However, because of the great error of controlling the pitch with the rocking handle, a simple and correct method is used in our factory to work. Now write down the following for your comrades reference: first in the precision lathe car and make a pair of screws and nuts, the number of teeth per inch the same as the original number of teeth required. Diameter can be large