SU910296A1

SU910296A1 - Mill for rolling toothed sections

Info

Publication number: SU910296A1
Application number: SU772524284A
Authority: SU
Inventors: Михаил Васильевич Барбарич; Михаил Антонович Битный; Анатолий Федорович Аржанов; Виктор Иванович Быкасов; Владимир Михайлович Колесов; Василий Федотович Муконин; Серафим Порфирьевич Милютин; Леонид Павлович Рычков; Владимир Иосифович Бурилов
Original assignee: Предприятие П/Я А-7697
Priority date: 1977-09-19
Filing date: 1977-09-19
Publication date: 1982-03-07

Description

(S) СТАН ДЛЯ ПРОКАТКИ ЗУБЧАТЫХ ПРОФИЛЕЙ(S) MILLING PROFILES MILL

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Изс Зретение относитс к обработке металлов давлением и момет быть использовано при прокатке зубчатых колес .Impairment refers to the processing of metals by pressure and may be used in rolling gears.

Известен стан дл гор чей прокатки зубчатых колес, у которого ось первого зубчатого валка неподвижна, а ось второго валка выполнена подвижной в направлении оси первого валка. Вращение заготовки производитс за счет зубчатого колеса, размещенного на одной оси с -заготовкой и кинематически св занного с зубчатыми валкамиA hot rolling mill for gears is known, in which the axis of the first gear roll is stationary, and the axis of the second roll is made movable in the direction of the axis of the first roll. The workpiece is rotated by a gear placed on the same axis as the workpiece and kinematically associated with the toothed rollers.

Недостатком этого стана вл етс то, что в процессе прокатки колес, особенно в начале делени , отсутствует жестка кинематическа св зь между валками и заготовкой. Это приводит к погрешност м процесса делени и, снижает качество изделий.The disadvantage of this mill is that in the process of rolling the wheels, especially at the beginning of the division, there is no rigid kinematic connection between the rollers and the workpiece. This leads to errors in the division process and reduces the quality of the products.

Наиболее близким по технической сущности и достигаемому результату к предложенному изобретению вл етс стан дл прокатки зубчатых профилейThe closest in technical essence and the achieved result to the proposed invention is a mill for rolling gear profiles

аbut

содержаиий подвижный и неподвижный суппорт с форис С1бразующими валками, а также размещенные в центральной рамке верхний приводной шпиндель и нижний холостой шпиндель с первым гидроцилиндром его осевого перемеще ни CU-Однако в известном стане кинематическа цепь вращени верхнего шпинде л не вл етс жесткой из-за наличи универсального шпиндел в этой цепи. Кроме того, в процессе эксплуатации возрастают зазбры в направл ющих дл перемещени шпинделей, а тгк как шпин дели закреплены в центральной рамке The moving and stationary support with foris C1 erasing rolls, as well as the upper drive spindle and the lower idle spindle with the first hydraulic cylinder axially displaced CU-CU-However, in a well-known mill, the kinematic chain of rotation of the upper spindle is not rigid due to the universal spindle in this chain. In addition, during operation, zazbry in guides to move the spindles increase, and tgk as spindles are fixed in the center frame

ts консольно, то образуетс перекос заготовки относительно валков. Все это снижает точность прокатываемых изделий .ts is cantilevered, the workpiece is skewed relative to the rolls. All this reduces the accuracy of rolled products.

Целью изобретени вл етс повыМ шение точности изделий.The aim of the invention is to improve the accuracy of the products.

Claims

This goal is achieved by the fact that the stanchion mounted in the center frame is connected with the upper spindle and the second hydraulic junction of the lower spindle axially symmetrical with the first hydraulic cylinder relative to the axis of the lower spindle and connected with the first hydraulic cylinder and the spindle. The worm gear wheel is mounted on the upper spindle. In addition, the connection of the first hydraulic cylinders with the second and lower spindle is carried out by means of hydraulic cylinder rods. i FIG. 1 shows a longitudinal section of the mill; on (ig. 2 - section L-A (. 1. The mill contains)) (it is the base 1, on which guides are movable support 2 and fixed support 3 with spindle t and 5 and toothed rolls 6 mounted on them. and fixed calipers, there is a central frame with a lower idle spindle 7, an upper drive spindle 8, a worm gearbox 9 for driving the upper spindle, two hydraulic cylinder 1 10 for displacing the lower spindle, which are installed symmetrically with respect to the spindle axis. with an inductor 11 for heating the blanks 12. A transfer gear 13 with interchangeable gears 1C, an angle adjustment coupling 15 and a pulley 16 is installed on the frame. The transfer gear is connected to the vape and to the worm gearboxes 17, 18 and 9 of the movable, fixed supports and the central frame. The mill operates as follows: The workpiece 12 with a loading device (not shown or manually loaded into the zone of the mill mill and the lower spindle 7 is pressed against the upper spindle 8 and set into the zone of the inductor 11 by two hydraulic cylinders 10 for heating. : The rotation of the shaft 6 and the workpiece is carried out from the electric motor through a wedge. A temporary transmission (not shown) pulley 16, a transfer gearbox 13 with an angle adjustment coupling 15 and replaceable gear 1, worm gears 9, 17 and 18 and spindles 8, t and 5. After heating the billet to a rolling temperature of 10.00-1100 0, the billet is moved by hydraulic cylinders 10 to the roll zoo, the movable support 2 is moved and the rolls roll the teeth in the preparation. At the end of the rolling-in process, the caliper 2 is retracted, the lower pindle 7 is lowered into the initial position. After removing the product from the tan and loading a new billet, the cycle is repeated. Installing a worm gear in an inmatic circuit of rotation of the upper spindle provides a hard, kiematic connection between the rolls and the winding, and making the lower spindle movable from two symmetrically located relative to its axis of the hydraulic cylinders eliminates the bias of the rolls. Claim 1. A mill for rolling gear profiles comprising a movable and stationary caliper with shaping rollers, as well as an upper drive spindle and a lower idler spindle with a first hydraulic cylinder for its axial movement located in the central frame, characterized in that, in order to improve the accuracy of products, it is equipped with a worm gear mounted in the center frame connected to the upper spindle and a second hydraulic cylinder for the axial movement of the lower spindle installed symmetrically to the first hydraulic cylinder Indra lower relative to the axis of the spindle and associated with the first hydraulic cylinder. and with spindle.

2. Stan according to claim 1, distinguished by the fact that the worm gear of the gearbox is mounted on a spindle.

3. The mill according to claim 1, in which it is connected with the fact that the connection of the first hydraulic cylinder with the second hydraulic cylinder and the lower spindle is carried out by means of the hydraulic cylinder rods. Sources of information taken into account in the examination 1. USSR author's certificate H-, cl. 6 21 N 5/00, 1963 (prototype).