SU969404A1

SU969404A1 - Bolster tool for closed-die deformation

Info

Publication number: SU969404A1
Application number: SU802885210A
Authority: SU
Inventors: Олег Михайлович Зарудин; Геннадий Александрович Должиков; Лев Георгиевич Гришин
Original assignee: Предприятие П/Я В-2190
Priority date: 1980-02-21
Filing date: 1980-02-21
Publication date: 1982-10-30

Description

(S) ПОДКЛАДНОЙ ИНСТРУМЕНТ ДЛЯ ОБЪЕМНОГО ДЕФОРМИРОВАНИЯ(S) TOOLING TOOL FOR VOLUME DEFORMATION

Изобретение относитс к обработке металлов давлением и может найти применение при изготовлении крупногабаритных корпусных деталей в услови х единичного и мелкосерийного производства пластическим деформированием .The invention relates to the processing of metals by pressure and may find application in the manufacture of large-sized body parts under conditions of single and small-scale production by plastic deformation.

Известен подкладной инструмент дл объемного деформировани , содержащий цилиндрический пуансон и концентрично размещенный относительно него кольцевой пуансон l.A backing tool for volumetric deformation is known, comprising a cylindrical punch and a circular punch l arranged concentrically relative to it.

Недостаток известного инструмента заключаетс в том, что не обеспечиваетс штамповка конусных деталей со стенкой переменного сечени .A disadvantage of the prior art tool is that it does not stamp the tapered parts with a variable cross section wall.

Цель изобретени - обеспечение возможности получени полых детгшей с кольцевыми вцемками на внутренней поверхности.,The purpose of the invention is to provide the possibility of obtaining hollow detgles with ring vcems on the inner surface.

Указанна цель достигаетс тем, что в подкладном инструменте дл объемного деформировани , содержащем цилиндрический пуансон и концентрично размещенный относительно него кольцевой пуансон, на рабочие торце кольцевого пуансона выполнена полость конической формы, глубиной не менее .глубины полости получаемой детали, а плоский торцовый участок кольцевого пуансона выполнен шириной, сооТ ветствующеи ширине кольцевой выемки на внутренней поверхности полус .чаемой детали, при этом кольцевой пуансон выполнен высотой не менее величины Н, определ емой следующей зависимостью:This goal is achieved by the fact that in a backing tool for volumetric deformation, containing a cylindrical punch and a circular punch arranged concentrically relative to it, a working conical shape is made on the working ends of the circular punch, with a depth of at least the depth of the cavity of the obtained part, and the flat end portion of the ring punch is made width, corresponding to the width of the annular recess on the inner surface of the semi-finished part, while the annular punch is made with a height of at least H, emoy limit the following relationship:

Н « Nsinct + h«cosc, H "Nsinct + h" cosc,

10 где t - длина участка стенки де.тали от наружного верхнего торца до кра кольцевой полости;10 where t is the length of the wall section from the outer upper end to the edge of the annular cavity;

fji- угол наклона этого участка fji- the angle of inclination of this area

15 стенки детали к плоскости, перпендикул рной оси вращени детали;15 of the wall of the part to the plane perpendicular to the axis of rotation of the part;

h - глубина кольцевой полости. Цилиндрический пуансон выполнен h is the depth of the annular cavity. Cylinder punch is made

20 с высотой, не менее высоты получаемой детали и дис1метром меньшим на 15-20% диаметра получаемой детали.20 with a height of not less than the height of the resulting part and a meter less than 15-20% of the diameter of the resulting part.

При этом цилиндрический пуансон With this cylindrical punch

Claims

25 can be made vertically composed of two cylindrical parts, and the conical cavity forming an annular punch is located relative to its flat end portion at an angle of 30-60. FIG. 1 shows the instrument, a general view, on. 2 - stamped part, general view. The tool contains an annular punch 1 and a cylindrical punch 2 The annular punch has a conical cavity 3. The width of the ring at the end (aj is equal to the width of the annular cavity on the part a. The cavity depth 3 h is not less than the depth h of the annular cavity children. The height of the annular punch H should be no less than the value, since otherwise the upper firing pin of the press will deform the part. The value of H is the sum of the values of ab and c. In this case, ab I s s I p o and se h -.cosc. Thus H - ba + ce t - s in o (. + h cos 0, where I is the length of the wall section of the part from outside about the upper end to the edge of the annular strips., ti, dL - the angle of inclination of this section of the part wall to the base of the annular cavity; h. - The depth of the annular cavity or the amount of indentation of the backing striker. A cylindrical head in height H is not less than the height of the part HQ,. The stamping using the proposed tool is carried out as follows: The initial cylindrical billet with a shallow annular recess at one end for fixing the annular punch laid on a flat plate at a forging temperature is deformed by an annular punch 1. An intermediate billet is prepared with a central x protrusion of a conical fork. After this, not removing the ring punch from the workpiece, a cylindrical punch 2 is installed into it, which is centered by the inner cylindrical surface of the ring punch and protrudes from the ring punch. During the second working stroke of the press, the deformation is performed by the central cylindrical punch 2, while the workpiece is deformed and the shape of the hollow body of the variable profile moves to meet the punch and at the same time lift the ring punch. In operation, the composite cylindrical punch removes the clip of the plug with a stamped part. The use of the invention allows for single and small-scale production to obtain hollow parts with annular recesses on their inner surface. Claims of the invention 1. Laying tool for volumetric deformation, containing a cylindrical puillon and a circular punch arranged concentrically with respect to it, so that, in order to ensure the possibility of obtaining -patch parts with annular grooves on the inner surface , at work. The end face of the annular punch is made of a cavity of conical shape, with a depth not less than the depth of the cavity of the 5th leg, and the flat end portion of the annular punch is wide. corresponding to the width of the annular recess on the inner surface of the obtained part, while the annular punch is made with a height not less than H, defined by the following relationship: H Isin в6 + h cos L L, where t is the length of the wall section of the part from the outer upper end to the edge of the annular cavity , oL is the angle of inclination of this section of the part wall to the plane perpendicular to the axis of the part's rotation, h is the depth of the annular cavity. The cylindrical punch is made with a height of at least the height of the resulting part and a diameter of 15-20% smaller than the diameter of the resulting part.

2. A tool according to claim 1, characterized in that the cylindrical punch is made vertically composite of two cylindrical parts.

3. The tool of claim 1, wherein the forming conical cavity of the annular punch is located in relation to its flat end portion at an angle of 30-60. Sources of information taken into account in the examination 1. USSR author's certificate, 103958, cl. B 21 J 13/02, 1955 (prototype).