SU448674A1

SU448674A1 - Rolls for transverse-wedge milling

Info

Publication number: SU448674A1
Application number: SU721828692A
Authority: SU
Inventors: Л.Н. Никольский; Н.Т. Удовин
Original assignee: Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения
Priority date: 1972-09-15
Filing date: 1972-09-15
Publication date: 1979-04-15

Description

1one

Изобретение относитс к области обработки металлов давлением, в частности, к поперечно-клиновой вальцовке.The invention relates to the field of metal forming, in particular, to transverse wedge rolling.

Известны вальцы дл поперечно-клиновой вальцовки, содержащие смонтированные на станине приводные валки с закрепленными на них клиновыми инструментами, и направл ющие проводки. Однако такие валки не обеспечивают вальцовку длинномерных деталей без увеличени размеров валков.Rollers for cross wedge rollers are known, containing drive rolls mounted on the frame with wedge-mounted tools mounted on them, and guide wiring. However, such rolls do not provide for rolling long items without increasing the size of the rolls.

В предлагаемых вальцах это устран етс за счет того, что деформирующие элементы клинового инструмента расположены по винтовой линии несколькими витками, а проводки выполнены в виде конических штифтов, а проводки выполнены в виде конических щтифтов, один из которых подпружинен, а другой снабжен дополнительным приводом. Кро.ме того, каждый валок выполнен длиной его диаметра.In the proposed rolls, this is eliminated due to the fact that the deforming elements of the wedge tool are arranged in a helical line by several turns, and the wiring is made in the form of conical pins, and the wiring is made in the form of conical fins, one of which is spring-loaded, and the other is supplied with an additional drive. In addition, each roll is made the length of its diameter.

На фиг. изображены описываемые вальцы , вид спереди; на фиг. 2 - разрез А-А фиг. 1; на фиг. 3 - развертка клинового инструментаFIG. depicts described rollers, front view; in fig. 2 - section A-A of FIG. one; in fig. 3 - scan wedge tool

Вальцы состо т из станины 1 несущей привод , св занный с двум валками 2, оси которых взаимно параллельны. На валках крепитс цилиндрический клиновой инструмент 3, имеющий вид замкнутого кольца, состо щего из отдельных секторов. Дл воз.можности установки инструментов на рабочие валки центральный угол секторов не должен превыщать 180°. На станине вальцов установлены направл ющие проводки 4 и 5 в виде конических штифтов, из которых один подпружинен пружиной 6, а другой св зан со средствами привода вальцов или имеет дополнительный привод, например пневмоцилиндр 7. Подпружиненный конический штифт (направл юща проводка) имеет паз, в который входит неподвижный упор 8. К станине креп тс склиз 9 дл загрузки исходной штучной заготовки 10 и склиз 11 дл выгрузки готовых изделий 12.The rollers consist of a frame 1 bearing a drive associated with two rollers 2, the axes of which are mutually parallel. A cylindrical wedge-shaped tool 3 is attached to the rollers, having the form of a closed ring consisting of individual sectors. In order to install tools on the work rolls, the central angle of the sectors should not exceed 180 °. On the frame of the rollers, guide wiring 4 and 5 are installed in the form of conical pins, of which one is spring-loaded with spring 6 and the other is connected with the means for driving the rollers or has an additional drive, for example, pneumatic cylinder 7. The spring-loaded conical pin (guide rail) has a groove which includes a fixed stop 8. A frame 9 is fastened to the frame to load the initial piece workpiece 10 and a frame 11 for unloading finished products 12.

Claims

The deforming elements of the wedge tool are located along a helix (inclined) in several turns. The face b and calibrating juice B, as can be seen from FIG. 1, rolls roll around more than once. For the example in FIG. 1 shows a tool in which the deforming elements form two turns. Between the deforming elements G of the first turn on the angle L, the shed D is made, which serves to ensure the possibility of loading the initial billet. To accommodate the end portions of the original preform, similar gaps E and G are made between deforming elements 3 and G of the first and second turns, and these gaps are a continuation of the gap D of the first turn (see Fig. 3). If the deforming elements surround the roll many times, such sheds are performed between the deforming elements of each previous and next turns. Rollers work as follows. The original workpiece 10 by means of loading (not shown in Fig.) Along the slide 9 is fed into the space bounded by the wedge tools 3 and the guide wiring 4 and 5. The workpiece is delivered at the time when the guide wiring 5 is in the far right position (see Fig. 2). When the movement of the wiring, for example, under the action of the pneumatic cylinder 7 in the working position, it sends the workpiece to the rolling position at the time of the coincidence of the sheds D of both wedge tools. In this case, the workpiece presses the spring-loaded tapered pin into the leftmost position fixed by the stop 8. When both rolls 2 rotate in the same direction, the workpiece is gripped by the lead-in portions of the AND 3 of the wedge tools 3 and is rotated around its longitudinal axis. In the course of rolling, the deforming elements of the tools compress the workpiece, giving it the desired profile. At the same time, the end sections of the initial billet, which at any given moment of the rollers remain free from reduction, are placed in the sheds E and F, which are made between the deforming elements of the previous and subsequent coils of the wedge tool surrounding the roller. The workpiece is rolled until its deformation is completed. the turn of the wedge tool, i.e., the workpiece is deformed by the number of revolutions of the rolls, is equal to the number of turns of the wedge tool. At the end of the rolling, the guide wiring 5, connected with the drive means, moves to its extreme right position, and the finished product 12 is pushed out of the rolls by the spring-loaded wiring 4 and falls on the slide 11. At this point, the next billet is loaded. The cycle is repeated. The proposed rollers can produce very long products, such as bodies of revolution, which cannot be obtained on known rollers for a cross wedge roller. Claim 1. Rollers for cross-wedge rollers containing drive rolls mounted on the frame with wedge tools attached to them, and guide lines, characterized in that, in order to extend technological capabilities, the deforming elements of the wedge tool are arranged along a helix in several turns , and the wiring is made in the form of conic clips, one of which is spring-loaded, and the other is equipped with an additional drive.

2. Rollers according to Claim 1, characterized in that, in order to provide stepped products of circular cross section of greater length, each roll is made in length B 06 of its diameter.

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