Silly String,Christmas Party String,Colorful Silly String Fenghua Jade Motor Co., Ltd. , http://www.aerosolmp.com CB 2463-1 hydraulic semi-automatic lathe, the design of the turret tool holder lifting and turning circuit (Fig. 1) has certain defects, which brings great difficulty to the maintenance. The reason is that the single point switch 8 in the turret tool holder ST is to control the tool holder to raise the index. At the same time, single-point switches 8 ST and 9 ST are mechanically interlocked