Abstract: The utility model discloses a machining device having both a drill and a lathe. A handle (7) is fixed on the shell of the bench drill, a base (2) and a handle (7) of the bench drill are supported on the ground, a holding block (8) located on the left side of the crack lifting mechanism (5) is arranged on the guide rail (3), a tool rest & base assembly (9) is arranged on the top of the holding block (8); a support portion (10) is fixed on the top of the rocking lift mechanism, a tailstock assembly (11) is fixed on the top of the support portion (10), a tailstock spindle (12) is arranged in the tailstock assembly (11), a tailstock center (13) is inserted in the left port of the tailstock spindle (12), a tailstock hand wheel (14) is arranged on the right end of the tailstock assembly (11) for driving the tailstock spindle (12) to extent or retract, and a locking handle (15) for locking the tailstock spindle (12) is arranged on the tailstock assembly (11).

Abstract: The invention discloses an abrasive belt clamp holder used with scroll saw and using method, and belongs to the technical field of scroll saws. An abrasive belt clamp holder used with scroll saw comprising a pin-free saw blade, wherein a clamp holder main body is connected to each of two ends of the pin-free saw blade, a placement groove matching the pin-free saw blade is provided in an outer wall of the clamp holder main body, a first bolt is movably connected to each of two sides of the outer wall of the clamp holder main body, the pin-free saw blade is disposed between two first bolts, a clamping plate is detachably connected to the top of the clamp holder main body, and an abrasive belt is connected between the clamping plate and the clamp holder main body.