Adopted particular structure of triangular cylindrical sliding track, for high strength and rigidity. Move smoothly, stepless speed adjusting available, no creeping, the blade retract quickly, save non-production time.Operate easily, adjust size accurately, milling precision≤0.1mm. With 6 pieces of milling cutters to mill out right tenon one time.6 pieces of milling cutters are installed in shafts of 5 main electromotors, capable of front-rear and up-down adjustment according to processing requirements. Among them, 4 pieces of cutters accomplish processing horizontal tenons, one for vertically cutting and the 6th cutter for 0-45-degree positive/negative angle cutting. Five motors of this milling machine can be started independently, so you can choose working motor(s) according to tenon requirements.Big-area worktable, 6-8 pieces of profiles can be processed simultaneously for high efficiency and batch production. It is capable of milling 38-90 series window materials, heat insulation materials and curtain wall materials. Automatic pneumatic spray mist blade lubrication coolant system. Utilizes big sealing protective cover to prevent deadheads from flying around.