The C6150 ordinary lathe economical guide rail quenching operation is simple. The ordinary lathe is a horizontal lathe that can perform multiple processes on various types of workpieces such as shafts, disks, rings, etc. It is commonly used to machine the inner and outer rotating surfaces, end faces, and various internal and external threads of workpieces. Corresponding tools and accessories are used, and drilling, hole expansion, tapping, and rolling can also be carried out. $r $n spindle box: also known as the headstock, its main task is to pass the rotational motion transmitted by the main motor through a series of variable speed mechanisms to obtain the required forward and reverse rotation speeds for the spindle. At the same time, the spindle box divides some of the power to transmit the motion to the feed box.