SU921695A1

SU921695A1 - Quick-action chuck

Info

Publication number: SU921695A1
Application number: SU792844458A
Authority: SU
Inventors: Арутюн Микаелович Микаелян; Ваган Мкртычевич Мирзоян; Гагик Тигранович Оганесян
Original assignee: Армянский Научно-Исследовательский Конструкторско-Технологический Институт Машиностроения
Priority date: 1979-11-28
Filing date: 1979-11-28
Publication date: 1982-04-23

Description

Изобретение относится к металлообработке, в частности к устройствам для закрепления концевых инструментов на металлорежущих станках.The invention relates to metal processing, in particular to devices for fixing end tools on metal cutting machines.

Известен быстродействующий патрон, содержащий корпус с хвостовиком и отверстием под переходную втулку, зажимные элементы клинообразной формы, установленные в отверстиях корпуса перпендикулярно его оси, и поворотную втулку с зажимными кулачками, предназначенными для взаимодействия с зажимными элементами [Ί] .Known high-speed cartridge containing a housing with a shank and a hole for the adapter sleeve, wedge-shaped clamping elements installed in the holes of the housing perpendicular to its axis, and a rotary sleeve with clamping cams designed to interact with the clamping elements [Ί].

К недостаткам известного патрона относятся его пониженные жесткость . и эксплуатационная надежность.The disadvantages of the known cartridge include its reduced stiffness. and operational reliability.

Цель изобретения - увеличение жесткости и эксплуатационной надежности патрона.The purpose of the invention is to increase the rigidity and operational reliability of the cartridge.

Указанная цель достигается тем, · что отверстия в корпусе под зажимные элементы выполнены с эксцентрично расположенными участками поверхностей, а зажимные элементы выполнены в виде тел вращения со сферическими концами и установлены с возможностью опоры этими концами на упомянутые эксцентрично расположенные участки поверхностей, при этом зажимные кулачки на участках, предназначенных для взаимодействия с зажимными элементами, выполнены упругими.This goal is achieved by the fact that the holes in the housing for the clamping elements are made with eccentrically located sections of the surfaces, and the clamping elements are made in the form of bodies of revolution with spherical ends and mounted with the possibility of support of these ends on the said eccentrically located sections of the surfaces, while the clamping cams on areas intended for interaction with the clamping elements are made elastic.

На фиг. 1 показан патрон, продоль ный разрез; на фиг. 2 - разрез АА на фиг. 1.In FIG. 1 shows a cartridge, a longitudinal section; in FIG. 2 is a section AA in FIG. 1.

В корпусе 1 патрона установлена переходная втулка 2 с регулировочной гайкой 3. В корпусе 1 выполнены отверстия 4 и 5, оси которых перпендикулярны оси переходной втулки 2,отверстия 5 выполнены с эксцентрично расположенными участками поверхностей по отношению к отверстию 4.An adapter sleeve 2 with an adjusting nut 3 is installed in the cartridge case 1. Holes 4 and 5 are made in the housing 1, the axes of which are perpendicular to the axis of the adapter sleeve 2, the holes 5 are made with eccentrically located surface sections with respect to the hole 4.

В эти отверстия введены сферические головки клинообразных зажимных элементов 6, выполненных в виде тел вращения. Переходная втулка 2 имеет лыску, по которой происходит контакт с зажимными элементами 6.Spherical heads of wedge-shaped clamping elements 6 made in the form of bodies of revolution are introduced into these holes. The adapter sleeve 2 has a flange through which there is contact with the clamping elements 6.

На корпусе 1 установлена поворотная втулка 7, в радиальном отверстии которого размещен шарик 8. Фиксация шарика производится пружинным кольцом 9. В концевых выемках поворотной втулки 7 установлены зажимные упругие кулачки 10. В поворотной втулке 7 выполнены два сквозных паза 1 1 .A rotary sleeve 7 is installed on the housing 1, in the radial hole of which a ball is placed 8. The ball is fixed by a spring ring 9. In the end recesses of the rotary sleeve 7, clamping elastic cams are installed 10. Two rotary grooves 1 1 are made in the rotary sleeve 7.

Концы зажимных элементов 6 выходят из габаритов корпуса 1 для контактирования с криволинейными поверхностями 12 и 13 упругих кулачков 10. Между упругими кулачками 10 и поворотной втулкой 7 имеется зазор 14.The ends of the clamping elements 6 extend from the dimensions of the housing 1 for contacting the curved surfaces 12 and 13 of the elastic cams 10. Between the elastic cams 10 and the rotary sleeve 7 there is a gap 14.

Быстродействующий патрон работает следующим образом.High-speed cartridge works as follows.

В осевом отверстии корпуса 1 устанавливается переходная втулка 2 с регулировочной гайкой.3. Поворотом втулки 7 вправо криволинейные поверхности 13 упругих кулачков 10 контактируют с зажимными элементами 6, и перемещая их, осуществляют зажим переходной втулки 2. Гарантированный зажим двух зажимных элементов 6 осуществляется за счет упругости кулачков ю. .An adapter sleeve 2 with an adjusting nut is installed in the axial hole of the housing 1. 3. By turning the sleeve 7 to the right, the curved surfaces 13 of the elastic cams 10 are in contact with the clamping elements 6, and moving them, clamp the adapter sleeve 2. The guaranteed clamping of the two clamping elements 6 is carried out due to the elasticity of the cams w. .

Так, например, при зажиме втулки 2 одним из зажимных элементов 6, поворотная втулка 7 продолжает поворачиваться до зажима вторым зажимным элементом. При этом кулачки 1 (^деформируются за счет зазора 14.So, for example, when clamping the sleeve 2 with one of the clamping elements 6, the rotary sleeve 7 continues to rotate before being clamped by the second clamping element. In this case, the cams 1 (^ are deformed due to the gap 14.

Разжим переходной втулки 2 осуществляется обратным поворотом поворотной втулки 7.The expansion adapter sleeve 2 is carried out by reverse rotation of the rotary sleeve 7.

Использование предлагаемого па-рона обеспечивает возможность повышения точности обработки за 'счет его большей жесткости и эксплуатационной надежности. Он удобен в эксплуатации, так как зажимные элементы не мешают при установке переходной втулки в отверстия корпуса патрона.Using the proposed steam provides the possibility of increasing the accuracy of processing due to its greater rigidity and operational reliability. It is convenient to use, since the clamping elements do not interfere with the installation of the adapter sleeve in the holes of the cartridge case.

Claims

The invention relates to metal working, in particular, to devices for fastening end tools on machine tools. A high-speed cartridge is known comprising a housing with a shank and a hole for the adapter sleeve, wedge-shaped clamping elements mounted in the holes of the housing perpendicular to its axis, and a turning sleeve with clamping jaws designed to cooperate with the clamping elements C11. The disadvantages of the known cartridge are its reduced stiffness. and operational reliability. The purpose of the invention is to increase the rigidity and operational reliability of the cartridge. This goal is achieved by the fact that the holes in the housing for the clamping elements are made with eccentrically located parts of the surfaces, and the clamping elements are made in the form of rotation bodies with spherical ends and are installed with the possibility of supporting these ends to the said eccentrically located parts of the surfaces, while the jaws on the areas intended to interact with the clamping elements are resilient. FIG. 1 shows a cartridge, longitudinal section; in fig. 2 is a section AA in FIG. 1. A transition sleeve 2 with an adjusting nut 3 is installed in the housing 1 of the cartridge. In the housing 1 there are holes and 5, the axes of which are perpendicular to the axis of the transition sleeve 2, the holes 5 are made with eccentrically located surface areas relative to the hole k. Spherical heads of wedge-shaped clamping elements 6, made in the form of bodies of rotation, are inserted into these holes. Transition sleeve 2 3 has a hole along which contact with clamping elements 6 occurs. On housing 1, a rotation sleeve 1 is installed, in the radial hole of which a ball 8 is placed. Fixation the ball is produced by a spring ring 9. In the end recesses of the rotary sleeve 7, clamping cams 10 are installed. In the rotary sleeve 7 there are two through grooves II. The ends of the clamping elements 6 extend from the dimensions of the housing 1 for contact with the curved surfaces 12 and 13 of the elastic cams 10. There is a gap between the elastic cams 10 and the rotary sleeve 7. High-speed cartridge works as follows. An adapter sleeve 2 with a adjusting nut is installed in the axial bore of the housing 1. By turning the sleeve 7 to the right, the curvilinear surfaces 13 of the elastic cams 10 contact the clamping elements 6, and moving them, the transition sleeve is clamped.

2. The guaranteed sizing of the two clamping elements b is carried out by the elasticity of the cams 10.. Thus, for example, when clamping a sleeve with one of the clamping elements 6, the rotary sleeve 7 continues to rotate until clamping with the second clamping element. Moreover, the cams 10 are deformed by the gap Ti. The uncoupling of the transition sleeve 2 is carried out by reverse rotation of the turning sleeve 7. 54 The use of the proposed steam makes it possible to increase the machining accuracy due to its greater rigidity and operational reliability. It is convenient to use, as the clamping elements do not interfere with the installation of the adapter sleeve in the holes in the body of the cartridge. Claims of the Invention A quick-action cartridge comprising a housing with a shank and a hole for the adapter sleeve, wedge-shaped clamping elements mounted in the holes of the housing perpendicular to its axis, and a rotary sleeve with clamping jaws designed to cooperate with the clamping elements, in that in order to increase rigidity and increase operational reliability, the holes in the housing for clamping elements are made with eccentrically located areas of surfaces, and clamping elements cients are in the form of bodies of rotation with spherical ends and are mounted to support these ends onto said eccentric sections disposed surfaces, wherein the clamping jaws at sites preznaznachennyh for cooperating with the clamping elements are resilient. Sources of information taken into account in the examination 1. US Patent No. 2667357, cl. 279-81, publ. 195.