SU1449211A1 - Method of making parts shaped as discs - Google Patents

Description

Phie.

The invention relates to the processing of metals by pressure and can be used in the manufacture of parts.

disk type.

The purpose of the invention is to increase the productivity of the process and expand the technological capabilities by obtaining the necessary disk shape without pre-stamping the workpiece.

FIG. 1 shows the initial logging prior to the start of crimping; Figs. 2 - introduction of rolls into the workpiece canvas; in fig. 3 - the end of the settlement process.

The method is carried out as follows.

 At the beginning of the process, the workpiece 1 is clamped 2 and the right 3 centers of the clamping device (not shown) and is fed in the direction indicated by the arrow L into the working space between the bed 4 and the right 5 rollers (Fig. 1). ,

The rotating work rolls 4 and 5 begin to converge in direction B and press the workpiece web .1. With this centers. 2 and 3, together with the workpiece 1, are retracted in the n direction A (Fig. 2). The ratio of the speeds of the directions of movement A and L Vj is prescribed in proportion to the tangent of the angle o /, the inclination of the tangent to the generatrix of the finished product profile.

Upon reaching a predetermined web thickness, the rolls coming closer are stopped, centers 2 and 3, together with the workpiece 1, are retracted in direction A (Fig. 3) until the end of rolling.

If necessary, as the rolling progresses, the rotating work rolls 4 and 5 can move apart and draw together. Thereby, thickenings can be formed on the web and a rim is obtained.

Example. According to the proposed method, a part of a 1st-stage disc is made, material 34XH MA

The original billet 1 in the form of a washer 58 mm thick with an outer diameter of 497 mm and one-sided conical 10

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This hub with a diameter of 293 mm and a height of 42 mm is obtained by free forging on a hammer with a weight of falling parts of 7 tons. The angle of inclination of the hub is 35.

After forging, billet 1 from this jKe. heating is transmitted to a special Disc-expanding mill, where the web is rolled up to a thickness of 16 mm and an outer diameter of 700 mm;. when the speed of convergence of the rolls is 1.25 mm / s and the speed of removal of the workpiece is 1.7-1.8 mm / s. With this approach of the rolls 4 and 5, a double-sided hub is formed - the height of the existing hub increases to 63 mm and at the same time a 22 mm high hub is formed from the opposite south-end.

After annealing, the workpiece I is fed for finishing machining.

The proposed cnoqo6 rolling allows to increase the productivity of the disc manufacturing process by reducing the required number of hammer blows when forging a workpiece for subsequent rolling and thereby reducing the laboriousness of machining and expanding the technological capabilities of the rolling process by using the original blanks of a simple form, obtained by free forging.

Claims (1)

Formula of the invention A method of rolling parts such as disks, in which the profile of a disk is formed, by compressing the workpiece with rotating work rolls, characterized in that, in order to increase the productivity of the process and expand technological capabilities by obtaining the required disk shape, compression of the workpiece by rolls and movement of the workpiece perpendicular to its axis of rotation relative to the rolls, and the ratio of speeds of cutting and movement of the workpiece on mean proportional to the tangent of the angle of the tangent to the forming profile of the finished product. Phae. ъ ABOUT Phage. five