SU941124A2 - Apparatus for automatic welding of seams along intersection line of two cylindrical surfaces - Google Patents

Description

cut A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The device contains the mechanism of rotation of the welding rug 1, consisting of circular guides 2, an acoustic wheel 3, a rotational drive 4 of the welding trap I. The wheel 3 is equipped with a stand 5, which IB has a bracket 6 with a hole at the bottom, the axis of which coincides with the axis of rotation gear wheel 3 and through an anchor there passes an empty vertical shaft 7, the upper part of which is sleep: bzhena with thread 8, interconnecting the | Sliver with flywheels 9. The vertical shaft 7 is connected with rails 10, on which roles are mounted and and interconnected by the screw 12, the right and left I1meyuschim one thread schaga. The rollers rest against the copier 13, the radius of curvature of which is equal to the radius of the ovariwimolo product. To the lower part of the hollow Vital 7 triple-clamp guide 14 with the housing 15, IB of which are helical gears 16 and 17 with a gear ratio equal to one, and the gear 16 is connected by a hollow shaft .18, inside which is a hollow vertical shaft 7. The upper part of the shaft 18 has splines interacting with a worm gear 19 that meshes with a worm 20.

On the ramps 14 there is a housing 21 having the possibility of radial movement with the help of a screw 22 with a drive. In the housing 21 there is a vertical shaft 23 on which the screw gear 24 is located, which is in engagement with the pinwheel gear 25. The transmission number of gears is 24 and 25 units. The helical gears 25 and 17 are connected by a splined shaft 26.

A casing 27 is attached to the lower part of the shaft 23, in which a planetary gearbox is mounted, consisting of gears 28. 29, 30 and 31, the last of which is connected to the housing 21. The gear ratio of the gearbox is equal to one.

On the same axis as the gear 30 is a crank assembly 32 of a sinus mechanism a, the finger 33 of which is screw 34 (see Fig. 3). It can move in a radial direction. The finger 33, which is made integral with the nut, is located in the groove of the slider 35 (see Fig. 3), which is located on the guides 36. The slider 35 has two mutually perpendicular grooves and the rail 37 is attached to it, connected by means of two toothed sectors 38 with a toothed sector 39 attached to the welding head I, which are located on the sector rail 40, the center of which intersects at one point with the axis of the shaft -23 and the end of the electrode of the welding rod 1. The device also contains a silo-loading mechanism consisting of an average crosshead 41 closed heated to the columns 42, the upper part of which is connected by the upper head plate 43,

on which OMOHTHpOBiaH is a hydraulic cylinder 44. On the upper threaded part of its stem there is a flywheel 45, which is also fitted with a cover sleeve 46 on the hydraulic cylinder 44. To the lower part

stock mounted m ha 47.

The lower part of the columns 42 is connected to the lower cross member 48, to which the clamp 49 is attached. To the cross beam 48 are attached the gi 50 passing through the springs 51 and

resting on their upper ends, with the lower ends of the springs resting on the beams 52.

The device works as follows.

The product rolls under the device, the hydraulic cylinder 44 is turned downwards and the coupling 47 is made to the welded flange. Then the hydraulic cylinder 44 is turned on to move the rod upwards, while under the action of force you develop (the hydraulic cylinder 44 and transferring | Ogo to columns 42) through the upper yoke 43, columns 42 together with the crossbars 43, 48 fixed on them, will start to lower down until the clamp 49 contacts the surface of the product. At the same time, the springs 51 will compress as the crosshead 48 moves down and the iBMecTe moves with it. The spring force is chosen so that it slightly exceeds the weight of the moving parts of the device.

The required degree of deformation of the welded joint zone is controlled by varying the pressure supplied to the lower cavity of the hydraulic cylinder. Upon reaching the desired degree of deformation, the screw 22 moves the welding head 1 to the required welding radius, and with the help of the flywheel 9, which moves the hollow vertical shaft 7 together with 1C of the guide 14, the housing 15, sec.

axially, with the hollow shaft 18, a necessary clearance is established between the end of the electrode of the welding head and the weld joint. Using a screw 20, a worm gear 19, a hollow core 18, screw wheels 16, 17, 25 and 24, a splined shaft 26 and a vertical shaft 23, PROPOSE) A pie path 40 is mounted in a plane perpendicular to the product axis. The distance between the end of the electrode of the welding head I and the surface of the product is maintained by the copier 13, which rolls the rollers 11, the distance of which from the center of rotation is equal to the radius of the welded

Claims (3)

the flange and is adjusted by a screw 12. The radius of the copier 13 is equal to the radius of the product. When the gear 3, the shaft 7, the guides 10 are rotated, the rollers 11 move the guides 10 vertically, and in turn, through the flywheel 9, move the shaft 7 with the guide 14 fixed on it, the housings 15, 21 and 27 and the head .one. The inclination of the welding head 1 in the plane perpendicular to the axis of the welded building is carried out by sinus mechanisms CONSTITUTING from the sector guide 40 on which the welding head 1 is located with the gear sectors 39 located on it, which by means of two gear sectors 38 and the rail 37 rotates arched head 1. The rail 37 moves together with the slider 35 (see fit 3) from the crank of the node 32 of the Sino mechanism along the guides 36 of the finger 33, which is made integral with the nut. During the rotation of the welding neck 1, the housing: 27 receives a rotational movement, therefore the gear 28 of the planetary gear reducer loops around the fixed gear 31 and rotates the crank assembly 32 through the gears 29, 30, and the gear ratio 28, 29, 30 and 31 is equal to one, therefore (a) one turn of the welding head, the crank assembly 32 makes one revolution; this ensures that the rotation angles of the wheel 3, the welding head and the crank assembly 32 are equal, because during the rotation of the wheel 3, the helical wheel 17 rolls around the fixed screw ring ECU 16 mounted on a non-rotating hollow shaft 18. Wheel 17 (through a spline shaft, the helical gears 25, 24 synchronously with wheel 3 rotates the vertical rail 23 with the housing 27 so that the rolling head of the welding head 1 is constantly perpendicular. product axes. This position is ensured by the fact that the gear ratio of the screw gears 16, 17, 25, and 24 is equal to 1. The radii of the cylindrical surface R and the flange r are respectively directly proportional to the radius RI of the gear sector 39 and the radius Rb on KOTOpoiM is finger 33 of the crooked ipnogo mechanism. Therefore, the relationship between the angle a, showing the position of a point on the radius r of the flange and the angle p between the vertical straight line and the normal to this point, located in a plane perpendicular to the axis of the product, has the form r sii; and sin p. In view of the proportionality between r and TI as well as 1, the same dependence also exists for the mechanism with radii TI and i ri sin a R sin p, i.e., depending on the angle a of the welding head, gear sector 39 together with a welding torch 40 will rotate at an angle p. With known r and R for a cylindrical surface and a known constant RI for a given mechanism, TI can be determined by the formula R g By moving the screw 34 the finger 33 of the crank | pn node 32 along the radius r, for given values of R and g the cylindrical surface depending on the angle of rotation, we obtain the required angle p of the inclination of the welding torch to the cylindrical surface of the product at any point of the weld. After the end of welding and holding, the flywheel 45 is turned off, the spacer is withdrawn (oil is fed into the upper cavity of the hydraulic cylinder 44, the device is raised; i1mx; iodine action of the springs 51 upwards, after which the ha 47 is disconnected from the flange. The process is completed. The invention makes it possible to improve the quality and accuracy of the manufactured products due to the creation of a preliminary stress state of the welded joint zone in the direction opposite to the direction of residual deformations arising from the action of stresses in the process. Estimate of welding. Formula of the invention 1. Device for automatic welding of seams along the line of intersection of two cylindrical surfaces along aiBT St. l / i G1 riill ri t lVrjl J llll "iJV IJ J1.1J L.: L. 315534 characterized by that, with the aim of providing the desired geometry of the welded joint and improving its quality, it is equipped with a loading mechanism, made in the form of two columns interconnected by three cross-arms, hydraulic cylinders, clamps and beams, while the welding head is mounted on the middle crossbar, Traverse - clamps with t g am, and. a hydrocylidron, the body of which is connected to the traverse, and the rod with the clamp of the flange. 2. The device according to claim 1, characterized in that, in order to provide self-returning of the force-loading mechanism to the initial position, the clamps are provided with springs mounted on beams attached to the columns. 3. The device for pi. 1 and 2, different from TeiM, which, in order to provide