SU764815A1

SU764815A1 - Method of making forgings

Info

Publication number: SU764815A1
Application number: SU782686904A
Authority: SU
Inventors: Владимир Николаевич Горбунов; Михаил Михайлович Черных; Вадим Авксентьевич Привалов
Original assignee: Ижевский механический институт
Priority date: 1978-11-21
Filing date: 1978-11-21
Publication date: 1980-09-23

Description

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Изобретение относитс к обработке металлов давлением, а именно к способам изготовлени поковок без штамповочных уклонов.The invention relates to the processing of metals by pressure, in particular to methods for the production of forgings without stamping gradients.

Известен способ изготовлени поковок типа стаканов без напуска на штамповочные уклоны штамповкой полой заготовки в форме усеченного конуса и последующим обжигом при проталкивании через матрицу 1.A known method of manufacturing forgings of the type of glasses without overlap on the punching slopes by stamping a hollow billet in the shape of a truncated cone and subsequent firing while pushing through the die 1.

Недостатком известного способа вл етс низкое качество поковок вследствие изгиба торца заготовок, а также повышенный расход металла на припуски под механическую обработку на боковых поверхност х поковок.A disadvantage of the known method is the low quality of forgings due to the bending of the end of the blanks, as well as the increased consumption of metal for machining allowances on the side surfaces of the forgings.

Цель изобретени - экономи металла и улучшение качества поковок.The purpose of the invention is to save metal and improve the quality of forgings.

Поставленна цель достигаетс тем, что перед обжигом заготовки осуществл ют ее раздачу со стороны большего основани усеченного конуса с последующим равномерным утонением стенки от меньшего основани к большему.This goal is achieved by the fact that before baking the billet it is distributed from the larger base of the truncated cone, followed by a uniform thinning of the wall from the smaller base to the larger one.

На фиг. I представлена поковка; на фиг. 2 - положение заготовки и частей штампа перед началом рабочего хода; на фиг. 3 -FIG. I represented the forging; in fig. 2 - the position of the workpiece and parts of the stamp before the start of the stroke; in fig. 3 -

момент раздачи большего основани ; на фиг. 4 - момент начала утонени стенки; на фиг. 5 - перед началом проталкивани ; иа фиг. 6 - момент окончани проталкивани .the moment of distribution of a larger base; in fig. 4 - the moment of the beginning of wall thinning; in fig. 5 - before pushing; FIG. 6 - the moment of the end of pushing.

Способ осуществл етс в штампе совмещенного действи , содержащем матрицу I дл обрезки заусенца, утонени стенки и проталкивани , пуансон 2 дл раздачи, утонени стенки и проталкивани и выталкива тель 4.The method is carried out in a stamp of the combined action, containing a matrix I for trimming a burr, wall thinning and pushing, a die 2 for dispensing, wall thinning and pushing and pushing the ejector 4.

Способ осуществл етс в следующей по10 следовательности.The method is carried out in the following sequence.

Claims

First, a larger base is distributed in zone A. This eliminates the gap S between the die and the workpiece and reliably centers the outer surface of the workpiece along the axis of the die. Then, the burr is trimmed and the particle is pushed into the die with wall thinning due to a small reduction between the die 1 and the die.

2. The wall acquires a uniform thinning from a smaller base to a larger one, compensating for the increase in wall thickness during pushing. Thereafter, the workpiece is pushed out of the die, rolled up to 376 seconds through 180 ° and is placed with a large base in the die. Then, the workpiece is pushed into the die and the stamping bias is eliminated, after which the forging is ready pushed out of the die by the ejector 4. Example. The processing of the gutter from steel 45 is in a hot state. The taper of the outer surface of the workpiece is 7 °, the largest diameter is 210 ml. Wall thickness 12 mm. The angle of taper of the matrix is 7 °, the punch is 6 °. When processing blanks according to the proposed method, the outer surface of the forgings is smooth, cylindrical. Defects after machining was not detected n 100% forgings. Using the proposed method saves metal and improves the quality of forgings. The invention method of manufacturing forgings such as glasses without overlap on punching slopes by punching a hollow billet in the shape of a truncated cone and then crimping it when pushed through a die, characterized in that, in order to save metal and improve the quality of forgings, before crimping the billet from the side of the larger base, followed by a uniform thinning of the wall from the smaller base to the larger. Sources of information taken into account in the examination 1. Babenko V. L. and others. Atlas of diagrams and designs “Die stamping. M., “Mechanical Engineering, 1965, p. 149.

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