UA15241U - Method for production of annular parts - Google Patents

Abstract

The method for production of annular parts consists in separation from the bar of rectilinear billets and their bending into the rings with minimum manufacturing joint clearance, collection of the bent rings on the mandrel into the packet with orientation along the joint clearances with subsequent compression of the packet on this mandrel along theaxis. The places of common joint clearances are welded by a common weld, welded structure is removed from the mandrel, common welds from the outer sides are smoothed out, obtained ring-shaped billets are separated by a torque with respect to the axis, passing along the common weld and through the center of gravity of the cross section of this weld. Obtained ring-shaped billet is volumetrically deformed by manufacturing effort.

Description

Description of the invention

The useful model refers to the processing of metals by pressure and can be used in the production of annular 2 parts by volumetric deformation.

A known method of volumetric deformation of parts by the rolling method. The essence of the method is that volumetric deformation is carried out by a moving force caused by the action of a moving tool that has its own movement and rolling drives. //

Forging and stamping production. - 1970. - Mo9. pp. 18-20). There are also known methods that use qualitative 70 effects inherent in rolling stamping INagovytsyn V.V. / Author's certificate Mo1146126. MKY 821 5/06. The method of manufacturing parts with a central hole. / The ballot was invented. - 1985. - Mo17;

Nagovytsyn V.V. etc. / Author's certificate Mo1181756. MKY 8210 37/12. The method of manufacturing discs by end rolling. / The ballot was invented. - 1985. - Mo36b; Nagovytsyn V.V. / Author's certificate

Mo1194551. MKY B21N 1/02. A method of making rings and an instrument for ego realization. // Bulletin 12 is invented. - 1985. - Mo441).

The closest in its technical essence to the declared one is the "Method of manufacturing parts with a flange" according to which a preliminary workpiece is obtained, and later the parts are obtained by volumetric deformation IKryvda L.T., Gozhy

S.P. etc. / Author's certificate Mo1611514. MKY 8210 37/00. The method of manufacturing parts with a flange. //

The ballot was invented. - 1990. - Mo45).

The main disadvantage of the described method is that the production by volume deformation of parts with an internal through cavity, i.e. ring flange parts, from a solid workpiece is impossible or possible with significant costs of material, time, energy, effort, etc. And the vast majority of parts used in industry are ring parts.

The useful model is based on the task of improving the method of manufacturing ring parts by volume deformation by using a zero-waste production scheme, in which the most common and relatively cheap assortment is used as the primary blank - a bar of the appropriate cross-section, from which straight blanks are separated and bent into rings , the rings on the mandrel are collected in a package, and in this state they are welded with a common seam, and then the individual ring blanks are separated by twisting. Due to which metal consumption is reduced to a minimum, productivity is increased and other costs are reduced (77 for metal processing. "I

The set task is achieved by the fact that, in the method of manufacturing ring parts, which consists in the fact that the pre-received ring blank is volumetrically deformed by technological effort, the new thing is that rectilinear blanks are separated from the bar and bent into rings with minimal technological contact th gap, the bent rings are collected on the mandrel in a package oriented along the joint gaps, the package of bent rings 39 is compressed on this mandrel along the axis and in this state the places of common joint gaps are welded with a joint seam, thus forming an inseparable welded structure, a welded structure is removed from the mandrel and its joint weld is cleaned from the outer sides, and then separate pre-obtained ring blanks are separated from this welded structure by twisting with a torque relative to the axis that passes along the joint weld and through the center of gravity of the cross section of this weld. With 50 The method is illustrated by drawings, where Fig. 1 shows the separation from the rod of a straight workpiece; c in Fig. 2 shows a rectilinear workpiece bent into a ring; Fig. 3 shows folded rings with

With" orientation along the joint gaps; Fig. 4 shows the scheme of compression on the mandrel of the package along the axis and welding of the joints with a joint seam; Fig. 5 shows a welded structure with a joint weld; in Fig. b - a view along the arrow A with the location of the weld; in Fig. 7 is an enlarged cross-section of the weld; Fig. 8 shows the diagram of the beginning of volumetric deformation of the previously obtained ring blank; in Fig. 8 - the final stage of deformation. 4! The method of manufacturing ring parts is as follows. Straight blanks 2 of the same cross-section (B, M) and the required length o are separated from the rod 1 (see Fig. 1) of the corresponding cross-section (based on the condition of equality of the volumes of the blank and the finished part). Next, these rectilinear blanks are bent (see "drive" 20, Fig. 2) into rings Z with a minimum joint gap 4. Then (see Fig. 3), bent rings Z are collected in a package oriented along the joint gaps. For convenience, assembly is performed on a mandrel of the appropriate diameter. and Received and oriented (see Fig. 4) in this way, the package 4 on the mandrel 5 is compressed along the axis by force 6.

After that, the places of common joints are welded with an electrode 7 with the formation of a joint weld along the entire package 4. Thus, after removal from the mandrel (see Fig. 5), a welded structure 8 is formed in the form of a pipe 22, which consists of annular blanks fastened together common weld 9. Clean the common weld after welding the joints from the outer sides. If you look at the formed welded structure 8 with a cleaned joint weld 9 according to arrow A (see Fig. 5), then in view A (see Fig. b) in the selected element

It (see Fig. 7) shows the seam, which is represented by the figure of the department. Figure dept is a cross section of a joint weld 9. Point C on this figure is its center of gravity. Axis BB (see Fig. 5) passes along 60 of the entire joint weld 9 and through point C (see Fig. 7). Separation of a separate preliminary ring blank occurs when twisting with a moment M applied to each subsequent ring blank relative to point C (or BB axis) of the welded structure 8. Possible surface irregularities in the places of separation of the ring blank do not affect the quality of the obtained parts, since the blank is further voluminous deforms At the last stage (see Fig. 8), the previously obtained ring blanks 10, which have the approximate dimensions of the side cross-section (B, p), the same as the cross-section dimensions of the rod, are volumetrically deformed by technological force 11 to obtain the final dimensions of the part 12 ( see Fig. 9). During volume deformation, plastic deformations occur in the body of the workpiece, and the structure of the metal in the corresponding places of the workpiece, including in the weld seam, becomes sufficiently uniform, and the obtained parts meet the requirements of operation.

Thus, this method allows you to reduce metal consumption to a minimum, increase productivity and reduce other metal processing costs.

Claims (1)

The formula of the invention , , and , The method of manufacturing ring parts, which consists in the fact that the pre-received ring blank is volumetrically deformed by technological effort, which differs in that rectilinear blanks are separated from the bar and bent into rings with a minimal technological butt gap, bent rings are collected on a mandrel in a package with orientation along the joint gaps, the package of bent rings is compressed on this mandrel along the axis and in this state the places of joint joint gaps are welded with a joint seam, which forms an inseparable welded structure, the welded structure is removed from the mandrel and its joint weld cleaned from the outer sides, and then from this welded structure, separate previously obtained annular blanks are separated by a torque relative to the axis that passes along the joint weld and through the center of gravity of the cross section of this seam. that 2 «- « s IF) yo - and? - 1 name) sh» - 60 b5