SU1296267A1 - Method of producing parts with a flange from tubular billet - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in mechanical engineering in the manufacture of hollow axisymmetric parts with a flange. The purpose of the invention is to increase productivity and expand technological capabilities. Under the action of the pressure created by the elastic medium in the billet, an outer annular gap is formed with a diameter of 0.7-0.85 of the diameter of the flange of the finished part. During the forming, a stress concentrator is applied along the outer contour of the corrugation by cutting. Then, the corrugation is raised in height until it is flattened, and hollow axisymmetric parts are obtained by forming a corrugation in the middle part of the workpiece, followed by draft and splitting the workpiece into two parts. 2 Il. ND; about 05 o

Description

larger diameter. Next, the punch 3, the elastic medium 4 and the upper semi-matrix 2 are returned to their original position, the ejector 6, the preform 9 with the formed corrugation is removed from the lower semi-matrix 1. The resulting semi-finished product (the preform 9 with the corrugation) is then installed in the lower plate 7 until its end face touches ejector 6. The impact on the corrugation of the upper plate 8, carry out his draft

The invention relates to the processing of metals by pressure and relates to methods for deforming tubular blanks.

The purpose of the invention is to increase productivity and the expansion of technological capabilities.

FIG. 1 shows a diagram of the forming of the collar (to the left of the axis of symmetry — the initial position, to the right — to the moment of rift notching); in fig. 2 - rift precipitation scheme (to the left of the axis of symmetry - the outcome is Q in height until the corrugation position is completely flattened, to the right is the end point and before dividing the workpiece 9 into two ready-made flange and dividing the workpiece 10. From plates 7 and 8 detones into two parts.) 10 are removed, respectively, by ejecting. In the drawings, the following are accepted by reference to 6 and punch 3, being the same: I - lower half-matrix; 2 - top-of-time puller. Then the cycle is made semi-matrix; 3 - punch; 4 - elasto-repetition.

typical environment; 5 - a knife; 6 - ejector-This method is compared with the publisher; 7 - bottom plate; 8 - top plate; 9 - pipe billet; 10 - ready item.

The original tubular billet 9 is installed in the lower semi-matrix 1 with a knife 5 fixed on it. The upper semi-matrix 2 is installed on the lower semi-matrix 1 with the formation of an annular cavity. Inside the workpiece 9 is placed elastic

Wednesday 4. Under the action of the punch 3, an elastic 25 of a tubular billet, including a medium, the medium 4 transmits pressure to the inner, corrugated-shaped lower surface of the billet in its middle part, as a result of which an outer annular corrugation with diameter d 0.7-0.85

the diameter D of the flange of the finished part 10. When ". „,

the diameter of the corrugation is less than 0.7 of the diameter of the flange 0 so that, in order to increase the production part 10, folds are formed in the strength and broadening of the technological

20

Ensures technological expansion by manufacturing two parts at the same time and increasing productivity.

Claims (1)

Claims method of manufacturing parts with a flange convexity, flattening the resulting convexity by a draft of a diameter equal to the flange diameter of the finished part and dividing the workpiece into two parts, different When the corrugation diameter is more than 0.85 of the flange diameter of the finished part 10, the performance of the elastic medium 4 decreases, which leads to the need for frequent replacement of it, and thus to a decrease in productivity. Using a knife 5, a cut is made on the corrugation opportunities, in the process of forming, a corrugation with a diameter equal to 0.7-0.85 of the diameter of the flange of the finished part is obtained and at the same time a notch is made in the zone of dividing the workpiece into two parts, and the separation is carried out in the process of flattening larger diameter. Next, the punch 3, the elastic medium 4 and the upper semi-matrix 2 are returned to their original position, the ejector 6, the preform 9 with the formed corrugation is removed from the lower semi-matrix 1. The resulting semi-finished product (the preform 9 with the corrugation) is then installed in the lower plate 7 until its end face touches ejector 6. The impact on the corrugation of the upper plate 8, carry out his draft in height until the corrugation is fully flattened and before the blank 9 is divided into two finished parts 10. Of the plates 7 and 8, the details of this method are Ensures technological expansion by manufacturing two parts at the same time and increasing productivity. tubular billet, including a form in its middle part, corrugated Claims method of manufacturing parts with a flange from tubular billet, including the form-, sheeting in the middle part of the corrugated   “. „, the fact that, in order to increase productivity and expand technological convexity, flattening the resulting convexity by a draft of a diameter equal to the flange diameter of the finished part and dividing the workpiece into two parts, different opportunities, in the process of forming, a corrugation with a diameter equal to 0.7-0.85 of the diameter of the flange of the finished part is obtained and at the same time a notch is made in the zone of dividing the workpiece into two parts, and the separation is carried out in the process of flattening w