SU829250A1 - Apparatus for ultrasonic straightening of plate parts - Google Patents

Description

(54) DEVICE FOR ULTRASONIC EDITION OF PLATE PARTS

changes in amplitude in magnitude, vdda in the material details of elastic vibrations and converting them into bending vibrations of the resonant frequency. The ultrasonic unit is attached to the spindle sleeve with a flange 4 in the displacement unit of the waveguide of the magnetostrictive transducer, the spindle is rammed in the body of the spindle head.

The spindle head with ultrasound assembly is balanced by a counterweight of about 30 kg. The spindle stroke downward with the ultrasound unit is controlled by a stop screw placed on frame 5. Part 6 after milling the bevel by feed conveyor 7 is fed into matrix 8. The matrix is a passive waveguide and is designed to base the part and ensure system conditions in the resonant mode and get the edit effect. In the profile cavity of the matrix, the supporting surfaces are placed. A and b, on which the part for sound is installed, the distance between them is equal to LD / 2. The matrix is rigidly connected with the movable guide 9, which has a reciprocating motion, which the cams 10 communicate to it. The cams are fixedly mounted on the shaft, which is received through a gearbox and a drive clutch (not shown). Cams due to eccentricity raise the matrix with the detail to the radiating surface of the hub tool. Under the action of the ultrasonic unit, a static force of 5-6 kg is applied to the surface of the part. After this, the detail is voiced. After editing, the cams return the matrix to its original position for supplying the part to the receiving conveyor, which transfers the part to the next operation.

The device works as follows.

The part 6 from the feed conveyor 7 enters the profile cavity of the matrix 8. Lifting the part and the matrix from the initial position until it touches the hub tool 3, pressing the part to the instrument at the moment of sounding and returning the part to the initial position is performed by cams, the configuration of which is determined by curvature details. During operation, the cams rotate at a constant speed of 25 rpm. Rotating, the cams are in constant contact with the guide on which the matrix is mounted.

The guide moves back and forth up and down. An ultrasonic straightening part is mounted on the die.

The use of the proposed device for ultrasonic dressing of plate parts in comparison with the known ones allows obtaining the following technical and economic efficiency:

increase in productivity by 20-25 times due to reduction of labor intensity and mechanization of the dressing process;

improving the quality of edits due to the fact that residual stresses are removed, i.e. the item during long-term storage does not warp again, which dramatically increases the product's performance.

Claims (2)

Invention Formula . A device for ultrasonic straightening of plate parts containing a coaxially mounted magnetostrictive transducer, a stepped instrument hub and a matrix, characterized in that, in order to improve the performance and quality of the straightening, the working surface of the matrix is made concave, the radiating surface of the instrument hub is in the form of a parallelepiped, large the side of which is equal to the length of the half-wave of transverse oscillations of the resonant frequency, the smaller - the width of the part, and the base - in the form of a convex surface, interacting ones with the corresponding concave surface of the matrix through the workpiece. 2. The device according to claim 1, characterized by in that the matrix is made in the form of a rectangular plate with a profile working cavity and with supporting surfaces, the distance between which is equal to or a multiple of the half-wave length of resonant oscillations, Q and double thickness of the workpiece. 5 Sources of information taken into account during the examination 1. USSR Copyright Certificate No. 194521, cl. B 21 D 31/00, 1967 (prototype). JO /////////////////////////////////// (Rygl