Profile bending machine W24S an arc-type down-type three-roll bending machine. Profiles with the end of the pre-bending function of time on profiles can be expected, no U-turn to complete the pre-bending and plate bending roll forming workpiece. The aircraft are mainly three main driveshaft, a fixed position on the spindle, spindle under a certain degree of arc along the campaign for take-off and landing, the main axis of rotation and movement take-off and landing are hydraulic, lifting displacement display. It began a large degree, it can be easily unloaded shape after rolling workpiece. Independent console with mobile and easier to use workers with safety devices so that the operation more secure. It is simple, easy maintenance, high-precision bending, is an advanced profile bending equipment practical.