SU965637A1

SU965637A1 - Apparatus for cutting tubes to blanks

Info

Publication number: SU965637A1
Application number: SU802996218A
Authority: SU
Inventors: Дмитрий Степанович Шолохов; Валерий Борисович Гликман; Федор Филиппович Дубяга
Original assignee: Общественное Конструкторско-Технологическое Бюро Предприятия П/Я Р-6194
Priority date: 1980-10-21
Filing date: 1980-10-21
Publication date: 1982-10-15

Description

(54) УСТРОЙСТВО ДЛЯ РЕЗКИ ТРУБ НА ЗАГОТОВКИ(54) DEVICE FOR CUTTING PIPES FOR PREPARATIONS

1one

Изобретение относитс к обработке металлов давлением и может быть использовано дл резки труб на заготовки в штампах .The invention relates to the processing of metals by pressure and can be used for cutting pipes into blanks in dies.

Известно устройство дл резки труб на заготовки, содержащее пуансон, матрицы, подвижную оправку, вводимую в отрезаемую от трубы часть, и неподвижную оправку , вводимую в трубу и выполненную разъемной в виде двух половин, имеющих возможность радиального перемещени 1.A device for cutting pipes into workpieces is known, comprising a punch, dies, a movable mandrel inserted into the part cut off from the pipe, and a fixed mandrel inserted into the pipe and made detachable in the form of two halves having the possibility of radial movement 1.

Недостатком известного устройства вл етс то, что оно не предотвращает сн тие трубы вследствие имеющегос зазора между трубой и оправкой и не обеспечивает резку толстостенных труб в щтампах.A disadvantage of the known device is that it does not prevent the removal of the pipe due to the existing gap between the pipe and the mandrel and does not ensure the cutting of thick-walled pipes in chips.

Цель изобретени - повышение качества отрезаемых заготовок и увеличение диапазона типоразмеров разрезаемых труб.The purpose of the invention is to improve the quality of the cut blanks and increase the range of sizes of pipes being cut.

Поставленна цель достигаетс тем, что в устройстве дл резки труб на заготовки, содержащем пуансон, матрицы, подвижную оправку, вводимую в. отрезаемую от трубы часть, и неподвижную оправку, вводимую в трубу и выполненную разъемной в виде двух половин, имеющих возможность радиального перемещени , подвижна и неподвижна оправки соединены между собой гибкой св зью, подвижна оправка также выполнена разъемной в виде двух половин , снабженных планками, жестко закрепленными на них, а обе половины неподвиж5 ной оправки выполнены с пазами, под упом нутые планки, при этом обе половины подвижной и неподвижной оправок подпружинены между собой, плоскость разъема половин совмещена с плоскостью пере Q Мещени пуансона, а половины подвижной оправки выполнены с вырезами, образующими , при смыкании паз дл пуансона.The goal is achieved by the fact that, in a device for cutting pipes into workpieces containing a punch, dies, a movable mandrel inserted into. the part cut off from the pipe, and the fixed mandrel inserted into the pipe and made detachable in the form of two halves having the possibility of radial movement, the movable and fixed mandrels are interconnected by a flexible connection, the movable mandrel is also detachable in the form of two halves fitted with slats, rigidly fixed to them, and both halves of the fixed mandrel are made with grooves, under the mentioned strips, while both halves of the movable and fixed mandrels are spring-loaded with each other, the plane of the connector of the halves is aligned with the plane of the feather Q is the Blowing of the punch, and the half of the movable mandrel is made with notches that form, when it is closed, a groove for the punch.

На фиг. 1 схематически изображено устройство; на фиг. 2-6 - разрезы.FIG. 1 schematically shows the device; in fig. 2-6 - cuts.

15 Устройство содержит пуансон I, матрицы 2, 3, 4 и 5, подвижную оправку 6, вводимую в отрезаемую от трубы часть 7, вход щую в направл ющую вилку 8, неподвижную оправку 9, вводимую в трубу15 The device comprises a punch I, matrices 2, 3, 4 and 5, a movable mandrel 6, inserted into a section 7 cut off from a pipe, entering into a guide fork 8, a fixed mandrel 9, inserted into a pipe

Claims

2Q 10. The movable mandrel 6 comprises halves 11 and 12 connected by springs 13 and guide pins 14, and fixed by means of an axis 15 and a fork 16 on a rod 17 of a pneumatic cylinder (not shown). The fixed mandrel 9 comprises halves 18 and 19 interconnected by a spring 20 and a guide fork 21. The movable and fixed mandrels are interconnected by a flexible connection, for example, springs 22, one end of which is fixed on the fixed mandrel 9 and the second on slats 23 rigidly connected with the halves 11 and 12 of the movable mandrel 6. The device operates as follows. When the matrices 2, 3, 4 and 5 are open, the axes of the movable 6 and the fixed 9 mandrel of the working parts 1 and 11 are on the same straight line, and the mandrels themselves occupy the extreme right position. The pipe 10 is fed to the thrust collar 24 on the movable mandrel 6 of the working part so that the fixed mandrel 9 and the partially movable mandrel 6 enter into the opening of the pipe 10. After the clamping dies 4 and 5 are closed, the dies 2 and 3 are closed. 11 and 12 and through the strips 23 pushes the halves 18 and 19 of the fixed mandrel 9, creating pressure on the walls of the pipe 10 and the cut-off workpiece 7. With the further progress of the semi-matrix, the pipe is cut down. When the dies 2 and 3 move upwards, the movable mandrel 6 together with the cut workpiece 7 rises and is set on the same axis with the fixed mandrel 9. With the further course of the matrix 3 upward, the punch 1 emerges from halves 11 and 12, which are below. .. by the action of the springs 13 are closed. The same happens with the halves 18 and 19 of the fixed mandrel 9. The pressure is removed from the inner walls of the pipe and a gap arises between the halves of the mandrels and the pipe, which allows the pneumatic cylinder 17 to pull the fixed mandrel 9 out of the pipe 10 and using the stand 8 pull out the entire mandrel from the cut piece 7, which is removed to the container. After that, the pneumatic cylinder places the mandrel in the extreme right position, i.e., in the initial position before the start of a new cycle. The proposed device allows improving the quality of the cut blanks and increases the range of standard sizes of the pipes being cut. An invention of a device for cutting pipes on a workpiece, comprising a punch, dies, a movable mandrel inserted into the part being cut from the pipe, and a fixed mandrel inserted into the pipe and made detachable in the form of two halves having the possibility of radial movement, characterized in in order to increase the quality of the cut blanks and increase the range of the sizes of the pipes being cut, the movable and fixed mandrels are interconnected by a flexible connection, the movable mandrel is also made detachable in the form of two halves, The two halves of the fixed mandrel are made with grooves, while both halves of the movable and fixed mandrels are spring-loaded with each other, and the halves of the movable mandrel are made with cutouts that form the groove for the punch when closed. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 405671, cl. In 23 D 21/00, 1971 (prototype).