A shoemaking machine includes a sewing device having a cantilever unit, a work platform and a clamping frame unit. The cantilever unit has a sewing needle extending toward the clamping frame unit. A driving device is disposed on the cantilever unit, and includes a movable seat that is movable toward and away from the clamping frame unit. An ultrasonic positioning device is connected to the cantilever unit, and includes a welding head facing the clamping frame unit. The clamping device is connected to the movable seat and has a clamping space. The ultrasonic positioning device is inserted into the clamping space and is clamped by the clamping device.

A shoemaking machine includes a sewing device having a cantilever unit, a work platform and a clamping frame unit. The cantilever unit has a sewing needle extending toward the clamping frame unit. A driving device is disposed on the cantilever unit, and includes a movable seat that is movable toward and away from the clamping frame unit. An ultrasonic positioning device is connected to the cantilever unit, and includes a welding head facing the clamping frame unit. The clamping device is connected to the movable seat and has a clamping space. The ultrasonic positioning device is inserted into the clamping space and is clamped by the clamping device.