SU912394A1 - Method of producing u-shaped articles with end beads - Google Patents

Description

The use of die forging in open dies followed by scraping (in the automotive industry) and even by machining to remove chips from the sheet stock (in instrument making). Thus, the disadvantage of this method is the limited product range.

The aim of the invention is to expand the product range of V-shaped products with end thickenings.

The goal is achieved in that according to the method involving bending the core blank and setting both thickenings simultaneously in a single transition in a closed tube, at the initial moment of the landing, the curvilinear section of the disembarked part of the blank is bent (L axis of the blank, and as the cross-section of the landed part increases, the propping tool gradually O1 is moved, not on HI, but at the same time its contact with the deformable material. 1tsy push tool, gradually reducing its contact with the surface of the deformable material and the end of the landing process backwater deformable material is stopped.

FIG. 1 shows sketches of techno and smart transitions of precise 1 V-about stamping: a crafted product; on fi.-. 2 - the process of extrusion and thickening of the first (the right half of the drawing) and the cohesive {left half of the drawing) of the application of (deformation) force.

The strip blank 1 (with a 1p section) 1m section) is curved in an EXCEPT bending punch with a 1m section) placed into the bottom matrix 2, set in the bottom plate 3 closed) of the stamp. At the same time, the 11diaradiation of u2; strumeryr 4 is in the initial state of 1n-1i and ko; This is done with a curvilinear section of the curved workpiece 1. During I1 and 5 down, the workpiece i is clamped between the upper 6 and lower 2 marts. The clamping force is desiccated by the compression of the screw spring 7, and at the final moment of deformation of the additional springs of the disc springs 8. In irodo; In its course, the punch 9 with its shape-1O1 part produces a set of utos, pcenium at the ends of the bent workpiece 1, and with a wedge part it acts on the surface of the iodine ipstrum. the surface rests on the supporting wedge 10, thereby securing the required nodiirayuyuyu effort, applied but normal to the curvilinear th uchachku landing part of the recruiting. The curvilinear section of the curvilinear section in the deformation allows to produce a quench; on the curved part of the workpiece without the stability of the plastically deformable material, which usually leads to a flaw on the part in the form of a fold, due to the fact that

Throughout the entire landing process, the prop is pushed aside without disturbing its contact with the deformable material. At the same time, the contact surface of the nodpirayushchy tool with the deformable material gradually decreases, and by the end of the landing process, the impact of the propping tool in this case is completely replaced by the action of the forming punch. At the end of the stroke, the prop tool 4 exits the working cavity.

stamp and punch 9 Finishes the design of the bulges at the ends of the workpiece. When lifting the top plate 5, the supporting tool 4 returns to its initial position under the action of the supporting wedge 10, and the finished part is pushed out of the die 2 by means of the ejector 11.

Thus, the invention makes it possible to produce Y-shaped products with precise die forging with bulges in curvilinear sections of a wider range.

Claims (3)

1. Method of making V-shaped articles with end thickenings, including bending rod-preparation and landing both thickenings simultaneously in a single transition in a closed tube, characterized in that, in order to expand the nomenclature products, at the initial moment of landing, the curvilinear section of the planted billet is supported in the direction normal to the bent axis of the billet, and as the cross-section of the planted part increases, the propping tool 0 is gradually moved away without breaking contact with the deformable material. 2. A method according to claim 1, characterized in that during the landing process, the surface of the contact of the supporting tool with the deformable material is gradually reduced. 3. The method according to claim 1, characterized in that by the end of the landing, the backwater of the deformable material is stopped. Sources of information taken into account in the examination 1. Forging and volumetric steel stamping. Handbook ed. M.V. Storozheva. M., “Mechanical Engineering, 1968, t, 2, p. 106, gr. Y view 2, s. 159, fig. 60 2. USSR author's certificate .N0 707671, cl. B 2 K 1/74, B 21 J 5/08, 1978 (prototype).