SU1184599A1 - Method of obtaining the bearing race blanks - Google Patents

Abstract

A METHOD FOR OBTAINING A BLADE OF RODS OF BEARINGS with a conical side outer surface and a flange by successive molding from a single initial billet of an intermediate forging with a lateral outer conical surface and subsequent removal of its bottom part, combined with the final molding through distribution, when basing the forging, different, with basing the forging part, which is combined with the final molding by means of distribution, when basing the forging, distinguishing with the bottom part, combined with the final molding by means of distribution, when basing the forging, different, with basing the forging, combined with the final molding, by distributing, while basing the forging, different parts, combined with the final molding by means of distribution, when basing the forging, differ, in basing the forging part, which is combined with the final molding through distribution, when basing the forging, different parts will be removed, while basing the forging, which is combined with the final molding by means of distribution, while basing the forging, different parts will be removed by combining with the final molding by means of distribution. the purpose of increasing material savings by increasing the height of the dispensed portion of the lateral outer conical surface of the intermediate forging, The forging during final molding is carried out along a portion of the outer conical surface that is not adjacent to the flange.

Description

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The invention relates to the field of metal forming, in particular, to the manufacture of bearing ring blanks on multi-position machines.

The purpose of the invention is to increase material savings by increasing the height of the dispensed portion of the lateral outer conic surface of the intermediate forging.

The drawing shows the forging configuration along the first three stamping transitions.

The method is dried as follows.

Sequential molding of a single initial billet (sediment on the first transition, pre-stamping on the second transition) produces an intermediate forging 1 with transition lateral conical surface 2, flange 3 and bottom part 4, which, depending on the type of particular product, can have a different shape. The bottom part of the intermediate forging is separated by a punch and a die. Upon further movement of the punch and the intermediate forging 1 removed from the end of the matrix, the matrix is distributed over the conical part of the conical surface of the punch and its final molding when basing in the matrix over the non-flange section of the outer conical surface 2. With this base, the distribution will be large at the distribution stage part of the stroke of the punch than when basing on the flange 3, which allows for an increase in shaping when dispensing to reduce the outer diameter of the bottom 4, and sequence and quantity of waste when punching. In order to prevent distortion of the lower end Gscoskosti part during the distribution and final molding, the punch during distribution must not completely exit the conical surface of the bore of the bore of the bearing ring with the conical surface, thereby forming

the part of the hole in the workpiece is a conical section, which is removed during subsequent processing.

Example. Billet bearing rings 7815 are made on a four-position mount with model A0341 stamping machine from an intermediate forging.

From a bar with a diameter of 60 mm of steel ShKh15 at 1150 ... 1170 ° C, a 74 mm long billet is cut off; on the first transition, it is precipitated to a height of 33 mm and a diameter of 90 mm; II and III are sequentially formed into an intermediate forging with a bottom part 10 ... 11 mm. Then, the forging holes are pierced and final molded through distribution.

At the third transition, an intermediate forging is obtained, the flange 3 of which is made with the dimensions of the flange of the billet ring billet, and the intermediate part of the intermediate forging 15 mm high has diametrical dimensions equal to the corresponding dimensions of the billet ring billet. The remaining part, 19 mm in height, of the intermediate forging is made with a pas, a rim surface having a taper angle of 16 ° 20, and an inner surface having a taper angle of 26 ° 30. .

The intermediate forging is placed on the abutment die with the lower end and the bottom part 4 with a diameter of 62 mm is separated by the punch. Further movement of the punch with the recessed piercing matrix based on the conical surface of the punch not contiguous to the flange of the outer conical surface 2 distributes and finally forms the billet of the bearing ring to a diameter of 72 mm at a depth of 11 mm. It has been established that distribution and flanging, carried out at a greater depth, leads to unacceptable distortion of the end face of the workpiece.

Claims (1)

METHOD FOR PRODUCING A BEARING RING BALL blanks with a conical lateral outer surface and a flange by sequential molding from a single initial blank of an intermediate forging with a lateral outer conical surface and subsequent removal of its bottom part, combined with the final molding by distribution, when forging based, characterized in that, with the aim of increasing material savings by increasing the height of the distributed section of the lateral outer conical surface of the intermediate forging, based e forgings during the final molding is carried out on a portion of the external conical surface not adjacent to the flange. 7th transition QO Joint venture SO with