SU931358A1

SU931358A1 - Part securing apparatus

Info

Publication number: SU931358A1
Application number: SU803004012A
Authority: SU
Inventors: Юрий Николаевич Федоров; Геннадий Васильевич Гусев; Вадим Николаевич Ананьев
Original assignee: Тульский Ордена Трудового Красного Знамени Политехнический Институт; Тульский Ордена Трудового Красного Знамени Машиностроительный Завод Им.В.М.Рябикова
Priority date: 1980-11-14
Filing date: 1980-11-14
Publication date: 1982-05-30

Description

(54) УСТРОЙСТВО ДЛЯ ЗАКРЕПЛЕНИЯ ДЕТАЛЕЙ(54) DEVICE FOR FIXING DETAILS

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Изобретение относитс к обработке материалов резанием, а именно к устройствам дл закреплени деталей на металлорежущих станках.The invention relates to the processing of materials by cutting, in particular, to devices for securing parts to machine tools.

Известно устройство дл закреплени деталей, содержащее корпус, в котором размещены оправка с центрирующим элементом и т га с прижимной щайбой 1.A device for securing parts is known, comprising a housing in which a mandrel with a centering element and a pull with clamping tab 1 are placed.

Недостатком известного устройства вл етс невысока точность обработки, обусловленна наличием зазоров между центрирующим элементом и базовой поверхностью обрабатываемой детали.A disadvantage of the known device is the low machining accuracy due to the presence of gaps between the centering element and the base surface of the workpiece.

Цель изобретени - повышение точности обработки путем беззазорного базировани детали по центрирующему элементу устройства.The purpose of the invention is to improve the processing accuracy by the backlash-based part on the centering element of the device.

Указанна цель достигаетс тем, что центрирующий элемент выполнен в виде втулки с двум фланцами, криволинейных пластин и электромагнитной катущки, при этом пластины размещены между фланцами втулки, а катущка - на ее наружной цилиндрической поверхности, причем втулка и пластины выполнены из магнитострикционных материалов, имеющих противоположные направлени изменени линейных размеров под действием магнитного пол . На фиг. 1 изображено устройство, продольный разрез; на фиг. 2 - разрез А-А на фиг. 1.This goal is achieved in that the centering element is made in the form of a sleeve with two flanges, curved plates and an electromagnetic coil, while the plates are placed between the flanges of the sleeve and the coil on its outer cylindrical surface, and the sleeve and plates are made of magnetostrictive materials having opposite the direction of change of linear dimensions under the action of a magnetic field. FIG. 1 shows a device, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

5Устройство состоит из корпуса 1, в котором жестко закреплена гайка 2, сменна втулка 3, в которой размещена с возможностью перемещени вдоль оси оправка 4, нижний, конец которой св зан с приводом 5,5The device consists of a housing 1 in which a nut 2 is rigidly fixed, a replaceable sleeve 3 in which a mandrel 4 is mounted for movement along the axis, the lower end of which is connected to the actuator 5,

10 закреплени , выполненным в виде вращающегос гидроцилиндра и закрепленным в цилиндрической расточке корпуса 1 при помощи щпилек 6 и гаек 7. На верхний конец оправки 4 надето кольцо 8 и быстросъемна щайба 9. На втулке 3 и оправке 410 of the fastening, made in the form of a rotating hydraulic cylinder and secured in the cylindrical bore of the housing 1 with the help of pin 6 and nuts 7. The upper end of the mandrel 4 is fitted with a ring 8 and quick-release plate 9. On the sleeve 3 and the mandrel 4

Claims

a centering element is installed, made in the form of a sleeve 10 with two flanges, made of a magnetostrictive material with a negative magnetostriction, on the outer cylindrical surface of which the electromagnetic coil I is located, and on the outside evenly between the flanges of the sleeve 10 are installed curvilinear plates 12 having a magnetostrictive effect of the opposite sign and having in cross section an external profile mated with the profile of the bore of the part 13. A basic base is made on the body 1 a flange 14. A mandrel 4 is connected with a thrust 15. The device operates as follows. Before installing the part 13, for example, a gear wheel, the load ha 15 is in the upper position, the ring 8 and the quick-release washer 9 are removed, and the current supplied to the coil II is disconnected, while the centering element is in the initial state characterized by the minimum dimensions outer diameter. The part 13 to be machined is freely mounted on the centering element up to the stop on the base flange 14 of the housing 1. The feed current of the roller 11 is turned on, and under the effect of the resulting magnetic flux the magnetostriction sleeve 10 reduces its linear axial size and the magnetostrictive curvilinear plates 12 increase their length , which leads to a uniform increase in the size of the outer diameter of the centering element. In this case, the magnetostrictive curvilinear plates 12 come into contact with the surface of the mounting hole of the part 13, due to which it is centered. To secure the part 13 to the upper end of the mandrel 4, a ring 8 and a quick-release washer 9 are put on, then the fastening actuator 5 is turned on. The hectare 15 moves downward in the axial direction and securely secures the part 13, after which it is processed. Changing the magnitude of the magnetic flux of the coil 11 allows relatively easy and accurate adjustment of the outer diameter of the centering element, which ensures accurate installation of the part 13 while its dimensions of the diameter of the bore hole vary within tolerance and improves the accuracy of machining of parts, reducing the requirements for positioning accuracy, for example, industrial robots. In the case of using the proposed device for controlling gears with negligible measuring forces, it is possible to fasten the part by increasing the centering force, thereby eliminating the drive and the fastening elements interacting with it. Claims The device for securing parts, comprising a housing in which a mandrel with a centering element and a clamping clamp is placed, characterized in that, in order to improve machining accuracy, the centering element is made in the form of a sleeve with two flanges, curvilinear plates and an electromagnetic coil , while the plates are placed between the flanges of the sleeve, and the coil on its outer cylindrical surface, and the sleeve and the plates are made of magnetostrictive materials having opposite directions and changes in linear dimensions under the action of a magnetic field. Sources of information taken into account during the examination 1. V. B. Bluberg and others. Remanufactured machine tools. L., “Mechanical Engineering, 1978, p. 298, fig. 194 a.

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