UA105364C2 - Ultrasonic tool for shock treatment of not easily accesible areas of parts and welded joints - Google Patents

Abstract

The invention relates to the field of technological use of energy of ultrasonic vibrations and can be used in mechanical engineering, aviation, shipbuilding, construction of steel towers, oil platforms, artificial islands and railway bridges as well as in other fields of industry, which use the structures operating under alternating load and, accordingly, have a greater probability of fatigue failure. In the ultrasonic tool for shock treatment of not easily accessible areas of parts and welded joints comprising a housing with a handle, in which by means of sliding guides for movement along the housing a barrel is placed, at one end of which a head with polls is placed, which is fixed relative to the barrel by a ball preloaded by a ring spring entering holes made ​​on the head with an angular increments, at the other end a fitting are placed for supplying air of forced cooling system and a power supply cable of a generator of ultrasonic vibration, and inside the barrel manner an ultrasonic vibration drive of reciprocating motion is located in acoustically uncoupled, whose working end interacts with a sliding block of high-strength material, which, in turn, interacts with the ends of head polls movably mounted in the head to enable pressing against the surface to be treated manually or by a spring located between the housing and barrel, while the barrel comprises a through-passage of air of the forced cooling system from the end with a nozzle, around the surface of the vibration drive and to the end with head and polls, the head is rigidly secured relative to the barrel by a ring clamp covering the ring spring with a ball, the sliding block is made ​​in the form of a plate, which is disposed perpendicular to the working end of the vibration drive, has contact surfaces for interaction with the working face of the vibration drive and ends of the polls and is arranged to swing around an axis, mounted fixedly in the head in parallel to the working face of the vibration drive, wherein by the ratio of the distances from the rocking axis to the centers of contact surfaces of the plate with working end of the vibration drive and the poll ends a coefficient of transformation of vibration amplitude from the working end of the vibration drive to the polls is set, and coaxially with the polls in the head holes are made, whose diameter is larger than the maximum diameter of poll. Furthermore, the sliding block can be made as a whole with the polls in the form of a plate disposed perpendicular to the working end of vibration drive with possibility of swinging around an axle fixedly mounted in the head in parallel to the working end of vibration drive and has a contact surface for interaction with the working end of vibration drive and a contact surface in the form of a poll head for interacting with the surface being treated. The basis of the present invention is the task to extend the functionality and efficiency of known ultrasonic tool for impact treatment of not easily accessible areas of parts and welded joints by applying a new tool design, in which the polls can be tilted to any angle from 0 to 180 degrees without loosing the effort of vibration drive.