SU884988A1

SU884988A1 - Apparatus for dressing grinding wheel

Info

Publication number: SU884988A1
Application number: SU802898966A
Authority: SU
Inventors: Савелий Давидович Вайс; Игорь Симонович Шапиро
Original assignee: Московский Ордена Трудового Красного Знамени Завод Автоматических Линий Им. 50-Летия Ссср
Priority date: 1980-03-26
Filing date: 1980-03-26
Publication date: 1981-11-30

Description

Изобретение относится к станкост.роению и может быть применено на врезных бесцентровых круглошлифовальных станках с криволинейной подачей круга $ на изделия.The invention relates to machine tool construction and can be applied on mortise centerless circular grinding machines with a curved feed of a circle $ on products.

Известно устройство для правки шлифовального круга, содержащее головку с обоймой, в которой установлен шпиндель с правящим роликом, ме- ц ханизм перемещения головки в плоскости вращения шлифовального круга и привод вращения ролика, установленный на головке Щ.A device for dressing a grinding wheel is known, comprising a head with a cage in which a spindle with a straightening roller is mounted, a mechanism for moving the head in the plane of rotation of the grinding wheel, and a roller rotation drive mounted on the head of the Shim.

Известное устройство не обеспечивает возможности компенсационного ·* перемещения шпинделя с роликом для повышения точности правки.The known device does not provide the possibility of compensatory · * movement of the spindle with a roller to improve the accuracy of dressing.

Цепь изобретения - повышение точ ности правки.The chain of invention is to increase the accuracy of editing.

Указанная цель достигается тем, что шпиндель установлен в обойме . эксцентрично, а обойма выполнена поворотной, при этом устройство снабжено механизмом поворота обоймя.This goal is achieved by the fact that the spindle is mounted in a cage. eccentric, and the cage is rotatable, while the device is equipped with a cage rotation mechanism.

На фиг. 1 показ'ана конструкция устройства, установленного на бесцентровошлифовальном станке; на фиг. 2 - схема компенсационного движения правящего ролика;, на фиг. 3 механизм поворота обоймы.In FIG. 1 shows the design of a device mounted on a centerless grinding machine; in FIG. 2 is a diagram of the compensatory movement of the ruling roller; FIG. 3 cage rotation mechanism.

Устройство содержит головку 1, в которой размещен правящий ролик 2 и установлен привод 3 вращения ролика. Для установочного перемещения головки 1 в плоскости вращения шлифовального круга 4 служит механизм 5, который включает винты 6 и 7. Правящий ролик 2 закреплен на шпинделе 8, который установлен в обойме 9 с эксцентриситетом Θ . Обойма 9 может поворачиваться с помощью механизма 10, включающего, например червячное колесо 11, червяк 12, зубчатое колесо 13, второй червяк 14 и приводной двигатель 15. Для связи с системой автоматического управления устройство может иметь бесконтактный датчик 16 с флажком 17.The device comprises a head 1, in which the governing roller 2 is placed and a roller rotation drive 3 is installed. For installation movement of the head 1 in the rotation plane of the grinding wheel 4, a mechanism 5 is used, which includes screws 6 and 7. The control roller 2 is mounted on the spindle 8, which is mounted in a sleeve 9 with an eccentricity Θ. The holder 9 can be rotated using a mechanism 10, including, for example, a worm gear 11, a worm 12, a gear wheel 13, a second worm 14 and a drive motor 15. For communication with the automatic control system, the device may have a proximity sensor 16 with a flag 17.

Устройство работает следующим образом.The device operates as follows.

По мере износа шлифовального круга ось его вращения перемещается по дуге О3О3 радиуса R. При этом расстояния от оси вращения круга до оси вращения изделия (0j0. ) и. до оси вращения ролика (OjOj) (фиг. 2) становятся неравными (О3О27О3О4 ) , что приводит к уменьшению глубины снимаемого при правке с круга дефект3 ного слоя, и, как следствие, к потере размерной точности и ухудшению качества обрабатываемых деталей.As the grinding wheel wears, the axis of its rotation moves along the arc O3O3 of radius R. Moreover, the distance from the axis of rotation of the wheel to the axis of rotation of the product (0j0.) And. up to the axis of rotation of the roller (OjOj) (Fig. 2) become unequal (O3O27O3O4), which leads to a decrease in the depth of the defective layer removed when dressing from the circle, and, as a result, to a loss of dimensional accuracy and a deterioration in the quality of the machined parts.

Для.восстановления симметричного расположения точек СЦ и 0 _г относительно траектории подачи круга производится компенсация положения ролика. Команда на автоматическую компенсацию подается, например, от прибора активного контроля (не показан), измеряющего деталь, который подает команду на включение приводного двигателя 15.To restore the symmetric arrangement of the points of the SC and 0 _g relative to the path of the feed circle compensation of the position of the roller. A command for automatic compensation is given, for example, from an active monitoring device (not shown) measuring a part that sends a command to turn on the drive motor 15.

Благодаря повороту обоймы 9 точка контакта правящего ролика 2 со шлифовальным кругом 4 смещается из положения А* в положение что способствует сохранению симметричности ее положения по отношению к точке контакта детали 18 со шлифоваль ным кругом 4,смещающейся из положения А^в положении А .Величина эксцентриситета £ между осью 0шпинделя правящего ролика и осью Од обоймы вы бирается исходя из величины траектории OjO’-j перемещения шлифовального круга.Due to the rotation of the cage 9, the contact point of the steering roller 2 with the grinding wheel 4 is shifted from position A * to the position, which helps to maintain the symmetry of its position with respect to the contact point of part 18 with the grinding wheel 4, shifted from position A ^ in position A. The eccentricity £ between the axis 0 of the spindle of the guide roller and the axis Od of the cage is selected based on the value of the trajectory OjO'-j of movement of the grinding wheel.

Claims

The invention relates to machine tooling, swarming and can be applied on timeless centerless circular grinding machines with a curvilinear feed round on the product. A device for grinding wheel grinding is known, which contains a head with a holder in which a spindle with a right-hand roller is installed, a mechanism for moving the head in the plane of rotation of the grinding wheel and a drive for rotating the roller mounted on the head 1 The known device does not provide the possibility of compensatory spindle movement with a roller to increase accuracy of editing. The chain of the invention is to improve the accuracy of edits. This goal is achieved in that the spindle is mounted in the holder. eccentric, and the holder is made on the door, while the device is equipped with a mechanism for turning the clip 1 1. In FIG. 1 shows the structure of a device mounted on a centerless grinding machine; in fig. 2 is a diagram of the compensation movement of the driving roller ;, FIG. 3 mechanism rotation cage. The device comprises a head 1 in which the right roller 2 is placed and the drive of rotation 3 of the roller is mounted. For installation movement of the head 1 in the plane of rotation of the grinding wheel 4, mechanism 5 is used, which includes screws 6 and 7. The right roller 2 is fixed on spindle 8, which is mounted in holder 9 with eccentricity b. The yoke 9 can be rotated by means of a mechanism 10 including, for example, a worm gear 11, a worm to 12, a gear wheel 13, a second worm to 14, and a drive motor 15. In connection with an automatic control system, the device can have a proximity sensor 16 with a flag 17 The device works as follows. As the grinding wheel wears, its axis of rotation rotates along the OjO arc of radius R. In this case, the distances from the axis of rotation of the circle to the axis of rotation of the product (OyO.) And up to the axis of rotation of the roller (OjOj) (Fig. 2) become unequal () , which leads to a decrease in the depth of the defective layer removed during the editing from the circle, and, as a consequence, to a loss of dimensional accuracy and a deterioration in the quality of the workpiece. To restore the symmetrical arrangement of the points 0, and O relative to the circle feed path, the roller position is compensated. The command for automatic com, the sensation is given, for example, from an active control device (not shown) measuring the part, which gives the command to turn on the drive motor 15. By turning the holder 9, the point of contact of the right roller 2 with the grinding wheel 4 is displaced from position A to The position A contributes to maintaining its symmetry with respect to the point of contact of the part 18 with the polished wheel 4, which is displaced from the position A. The magnitude of the eccentric g between the axis O 2, the spindle of the right roller and the axis d ferrule is selected based on the value NEO trajectory, movement of the grinding wheel. Claims of the device for dressing a grinding wheel, comprising a head with a holder in which a spindle with a right roller is installed, a mechanism for moving the head in the plane of rotation of the grinding wheel and a drive for rotating the roller mounted on the head, characterized in that, in order to increase the accuracy, the spindle The eccentric cage is installed in the cage, and the cage is pivoted, and the device is equipped with a cage turning mechanism. Sources of information taken into account in the examination 1. US patent No. 3524283, cl. 51-5, 1970.