SU884798A1

SU884798A1 - Punch for punching hole and chamfering

Info

Publication number: SU884798A1
Application number: SU792879021A
Authority: SU
Inventors: Владислав Михайлович Колтунов; Виталий Тихонович Бондаренко; Владимир Стефанович Сасин; Альберт Борисович Прокофьев; Эдуард Яковлевич Парфенов
Original assignee: Научно-Производственное Объединение Атомного Машиностроения И Котлостроения; Ростовское Производственное Объединение "Красный Аксай"
Priority date: 1979-10-30
Filing date: 1979-10-30
Publication date: 1981-11-30

Description

(54) ПУАНСОН ДЛЯ ПРОБИВКИ ОТВЕРСТИЯ И ОБРАЗОВАНИЯ ФАСКИ(54) PUNCH FOR PUNCHING HOLES AND FORMING FACKS

II

Изобретение относитс к обработке металлов давлением, в частности к рабочим инструментам дл обработки давлением.The invention relates to the processing of metals by pressure, in particular to working tools for pressure treatment.

Наиболее близким к предлагаемому по технической сущности и достигаемому эффекту вл етс пуансон дл пробивки отверсти и образовани фаски, содержащий пробивную часть, соосно с ней размещенную нерабочую часть, площадь поперечного сечени которой больше площади поперечного сечени пробивной части, и участок, формирующий фаску и соедин ющий указанные части 1ХClosest to the proposed technical essence and the achieved effect is a punch for punching a hole and forming a chamfer containing a piercing part, a non-working part placed coaxially with it, the cross-sectional area of which is larger than the cross-sectional area of the piercing part, and the section forming the chamfer and connecting specified parts 1X

Однако известным пуансоном невозможно получить отверстие на криволинейных поверхност х деталей, например лапах культиватора .However, it is not possible with a known punch to obtain a hole on curved surfaces of parts, for example, cultivator legs.

Цель изобретени -- обеспечение получени отверстий на криволинейных поверхност х деталей, например лапах культиваторов .The purpose of the invention is to provide holes in curved surfaces of parts, for example, cultivator legs.

Указанна цель достигаетс тем, что продольна ось формующего фаску - участка наклонена к продольной оси пробивной части пуансона.This goal is achieved by the fact that the longitudinal axis of the chamfer-forming section is inclined to the longitudinal axis of the piercing part of the punch.

Формующий фаску участок выполнен в виде части сферы.The chamfer-forming area is made as part of a sphere.

Угол наклона продольной оси формующего фаску участка к продольной оси пробивной части пуансона составл ет 5° 17.The angle of inclination of the longitudinal axis of the chamfer-forming section to the longitudinal axis of the penetration part of the punch is 5 ° 17.

На чертеже изображен инструмент дл 5 обработки лапы культиватора, установленный на щтампе дл гибки детали и получени на изогнутом участке отверсти с фаской .The drawing shows a tool for processing 5 of a cultivator paw mounted on a chip for bending the workpiece and producing a chamfered hole in the curved portion.

Пуансон дл пробивки отверсти и образовани фаски состоит из нерабочей части 1, соосной с ней пробивной части 2, поперечное сечение которой меньще поперечного сечени .нерабочей части, и соедин ющего эти части участка 3.The punch for punching a hole and forming a chamfer consists of a non-working part 1, a piercing part 2 coaxial with it, whose cross section is smaller than a cross section of a working part, and section 3 connecting these parts.

Claims

5 The stamp contains a bending matrix 4 in which the matrix 5 is embedded for punching. On the mirror of the matrix 5 for punching from two sides of the square hole, the cut-away plane of the longitudinal curvature of the cultivator, are recessed. A die 5 for punching a hole and forming a chamfer is placed in the die 6 for bending. Section 3 is made as part of a sphere, and its longitudinal axis is inclined to the longitudinal axis of the punch in such a way that. it is perpendicular to the tangent to the curvilinear surface of the cultivator's paw in the place of the punched hole. For the cultivator paw, type 5, GOST 1343-68, the angle of inclination of the longitudinal axis of the chamfering portion is 5 ° 17 to the longitudinal axis of the punch. Punch works as follows. The billet is heated to 900-1200 ° C, laid on a bending matrix 4 mounted on a double action press. The cultivator's flexible legs are carried out. Then the hole is punched by the piercing part 2 of the punch and the chamfers are molded with section 3. The degree of deformation of the metal when chamfering along the contour of the square hole is not the same. On the sides of the hole that intersect the bend plane of the cultivator paw, the excess of the deformable metal forms stiffening ribs. The use of the invention allows refusing mechanical machining of the attachment points of the cultivator type. Claims. A punch for punching a hole and forming a chamfer, containing a piercing part, coaxially with it a placed non-working part, the cross-sectional area of which is larger than the cross-sectional area of the piercing part, and the section forming the chamfer and connecting the other two parts, characterized in that the holes on the curved surfaces of the parts, for example on the tillers of the cultivators, the longitudinal axis of the chamfer-forming section is inclined to the longitudinal axis of the piercing part of the punch.

2. The punch according to claim I, characterized in that. that the longitudinal axis of the chamfer-forming area is inclined to the longitudinal axis of the piercing part of the punch at an angle of 5 ° 17.

3. A punch according to claim I, characterized in that the chamfer-forming portion is made as part of a sphere. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 442872, cl. B 21 D 37/00, 12.08.73.