SU841716A1

SU841716A1 - Apparatus for rotation drawing of parts

Info

Publication number: SU841716A1
Application number: SU792804281A
Authority: SU
Inventors: Вячеслав Михайлович Хомяков; Анатолий Семенович Чумадин
Original assignee: Предприятие П/Я В-2548
Priority date: 1979-08-03
Filing date: 1979-08-03
Publication date: 1981-06-30

Description

(54) УСТРОЙСТВО ДЛЯ РОТАЦИОННОЙ ВЫТЯЖКИ(54) DEVICE FOR ROTARY EXTRACT

II

Изобретение относитс к обработке металлов давлением, а именно к устройствам дл ротационной выт жки.The invention relates to the processing of metals by pressure, in particular to rotary stretching devices.

Известно устройство, содержащее смонтированные в корпусе оправку, подвижную втулку, механизм дл креплени заготовки, а также стопорный механизм 1.A device is known comprising a mandrel mounted in a housing, a movable sleeve, a mechanism for securing the workpiece, and also a locking mechanism 1.

Недостатко.м известного устройства вл етс невысокое качество готового издели .A disadvantage of the known device is the low quality of the finished product.

Цель изобретени - повышение качества готового издели .The purpose of the invention is to improve the quality of the finished product.

Указанна цель достигаетс за счет того , что стопорный механизм выполнен в виде установленного на подвижной втулке с возможностью осевого перемещени подпружиненного кольца, а также в виде подпружиненного щтыр , смонтированного перпендикул рно оси оправки, на которой выполнена кольцева проточка, а механизм дл креплени заготовки выполнен в виде размещенной на подвижной втулке стопорной гайки с углублением на ее торцовой поверхности по форме заготовки.This goal is achieved due to the fact that the locking mechanism is designed as mounted on a movable sleeve with the possibility of axial movement of the spring-loaded ring, as well as a spring-loaded pin mounted perpendicular to the axis of the mandrel on which the annular groove is made, and the mechanism for fixing the workpiece is made in the form placed on the movable sleeve of the lock nut with a recess on its face surface in the form of the workpiece.

На фиг. 1 изображено предлагаемое устройство дл ротационной выт жки, общий вид; на фиг. 2 - механизм дл креплени FIG. 1 shows the proposed device for rotary drawing, general view; in fig. 2 - attachment mechanism

заготовки, вид А на фиг. 1; на фиг. 3 - стопорный механизм, узел I на фиг. 1.blanks, view A in FIG. one; in fig. 3 — locking mechanism, node I in FIG. one.

Устройство содержит оправку 1, на которой расположена подвижна втулка 2 с механизмом дл креплени заготовки в виде стопорной гайки с квадратным отверстием 3. В подвижной втулке 2 установлен винт 4, который утоплен в продольном пазу 5, выполненном на оправке 1. На подвижной втулке 2 установлено кольцо 6, штырь 7, пружины 8 регулировочного винта 9 и корпуса 10, который на резьбе крепитс к кольцу. Штырь 7 через паз 11, выполненный во втулке 2, утоплен в кольцевую проточку 12, выполненную на оправке 1. Между кольцом 6 и стопорной гайкой 3 установлена пружина сжати 13, а между кольцом 6и плечиками оправки 1 - пружина раст жени The device comprises a mandrel 1, on which a movable sleeve 2 with a mechanism for fastening the workpiece in the form of a lock nut with a square hole 3 is located. In the movable sleeve 2 a screw 4 is installed, which is recessed in the longitudinal groove 5 made on the mandrel 1. On the movable sleeve 2 is installed ring 6, pin 7, springs 8 of the adjusting screw 9 and the housing 10, which is attached to the ring on the thread. The pin 7 through the groove 11, made in the sleeve 2, is recessed into the ring groove 12, made on the mandrel 1. A compression spring 13 is installed between the ring 6 and the lock nut 3, and between the ring 6 and the mandrel hangers 1 is an extension spring

S 14, котора крепитс к кольцу 6 винтами 15, заготовка 16, а также давильный ролик 17 и центральный прижим 18.S 14, which is attached to the ring 6 by screws 15, the workpiece 16, as well as the pressure roller 17 and the center clamp 18.

Устройство работает следующим образом .The device works as follows.

Claims

The ring 6 is placed in a working position in which the pin 7 enters the annular groove 12. The square billet is installed in a recess in the lock nut 3. The pressure roller 17 and the central clamp 18 are in the position shown in FIG. 1. When the mandrel 1 is rotated, the torque is transmitted through the screw 4, the movable sleeve 2 and the locking nut 3 to the workpiece 16. Under the action of the pressure roller 17 moving along the copier, a rotational extension of the central part of the workpiece occurs. The movable sleeve 2 is displaced axially relative to the mandrel 1 and the ring 6, compressing the spring 13, which ensures stable engagement of the lock nut 3 with the workpiece 16. Upon reaching the required contact surface between the mandrel and the deformed part of the workpiece, the workpiece is clamped with a central clamp 18, for example automatically. Moving axially, screw 4 emerges from groove 5, detached the periphery of the workpiece from tangential forces, and locking pin 7 under the action of axial force transmitted from the movable sleeve leaves the engagement with the annular groove 12, unfastened the ring in the axial direction, which the action of the spring 13 strikes the movable sleeve 2 through the housing 10 located in the groove 11, releasing the periphery of the workpiece in the axial direction. Under the action of the spring 14, the peripheral fasteners are retracted and held outside the working area of the mandrel, and further processing of the part / V 2 is 74-if the LI is carried out with central clamps 18. Using the proposed device for rotational stretching of parts makes it possible to increase the accuracy of the internal angle in 2-3 times due to the detachment of the periphery of the workpiece after pressing it to the mandrel in the central part. Apparatus of the invention for rotational drawing of parts, preferably conical in shape, comprising a mandrel mounted in the housing, a movable sleeve, a mechanism for securing the workpiece, and also a locking mechanism, characterized in that, in order to improve the quality of the finished product, the locking mechanism is designed as on the movable sleeve with the possibility of axial movement of the spring-loaded ring, as well as in the form of a spring-loaded pin mounted perpendicular to the axis of the mandrel, on which the ring was made The mechanism for fastening the workpiece is made in the form of a lock nut placed on the movable bushing with a recess on its end surface in the shape of the workpiece. Sources of information taken into account in the interpretation 1. US Patent No. 2921549, cl. 72-83, 1901.60. J

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