SU899237A1

SU899237A1 - Apparatus for producing casting mould elements

Info

Publication number: SU899237A1
Application number: SU802929894A
Authority: SU
Inventors: Бенедикт Веньяминович Рабинович; Константин Сергеевич Иванов; Александр Кузьмич Кесарев; Вячеслав Алексеевич Бедин; Николай Алексеевич Попов; Юрий Анатольевич Курчев; Валерий Александрович Честных
Original assignee: Московский автомеханический институт
Priority date: 1980-05-26
Filing date: 1980-05-26
Publication date: 1982-01-23

Description

Изобретение относитс к литейному производству, в частности к устройствам дл изготовлени элементов литейных песчаных форм.The invention relates to foundry, in particular, to devices for the manufacture of elements of foundry sand molds.

Известны устройства дл изготовлени литейных песчаных форм и их элементов посредством формовочных моделей l .Devices are known for making sand casting molds and their elements by means of molding models l.

Недостатки этих устройств состо т в том, что дл формовки требуютс сложные и дорогосто щие модели; изготовление элементов форм, расположенных со стороны контрлада таких, как металлоприемные воронки, литниковые чаши и др., сопр жено с переуплотнением смеси при прессовании или с недоуплотнением при встр хивании , или пескодувном уплотнении; изготовление элементов форм с ббльшим отношением их высоты к площади сечени затруднено и зачастую невозможно из-за трудностей уплотнени смеси и сложности прот жки таких моделей.The disadvantages of these devices are that complex and expensive models are required for forming; the manufacture of mold elements located on the control side, such as metal receptacles, sprue bowls, etc., is associated with over-compaction of the mixture during pressing or under-compaction during shaking or sand blasting; The manufacture of mold elements with a larger ratio of their height to the cross-sectional area is difficult and often impossible due to the difficulties in compacting the mixture and the difficulty of stretching such models.

Наиболее близким к предлагаемому по технической сущности вл етс устройство дл получени полостей в литейных песчаных формах, содержащее вращающийс режущий орган, конфигураци которого соответствует геогиетрии вырезаемой полости 2.Closest to the proposed technical entity is a device for producing cavities in sand casting molds, which contains a rotating cutting member, the configuration of which corresponds to the geo-geometry of the cavity being cut 2.

Однако известное устройство позвол ет изготавливать элементы литейных песчаных форм только в виде тел вращени . Дл получени полостей иной геометрии необходимо дополнительное перемещение инструмента по требуемому контуру, что св зано с усложнением устройств и с затратами времени.However, the known device makes it possible to produce elements of cast sand molds only in the form of rotation bodies. To obtain cavities of a different geometry, an additional movement of the tool along the required contour is necessary, which is associated with the complexity of the devices and the time spent.

Цель изобретени - ускорение про10 цесса получени элементов песчаных литейных форм сложной конфигурации.The purpose of the invention is to accelerate the process of obtaining elements of sand casting molds of complex configuration.

Поставленна цель достигаетс тем, что в устройстве, содержащем вращаемый режущий орган, последний выпол15 нен из набора режущих инструментов, кинематически св занных между собой, отсто щих друг от друга на рассто нии меньше диаметра окружности,описываемой при вращении каждого ин20 струмента.The goal is achieved by the fact that in the device containing a rotating cutting body, the latter is made of a set of cutting tools kinematically connected to each other, spaced from each other at a distance less than the diameter of the circle described during the rotation of each tool.

При таком расположении полости, вырезаемые каждым инструментом, взаимно перекрывают друг друга, в ре- . зультате чего образуетс полостьWith this arrangement, the cavities cut out by each instrument overlap each other, in re-. As a result, a cavity is formed

25 сложной конфигурации за один ход режущего органа в направлении формы. Располага режущие элементы определенным образом, можно получить практически любую требуемую конфигурацию25 complex configuration in one stroke of the cutting body in the direction of the form. Placing cutting elements in a specific way, you can get almost any desired configuration.

Claims

30 cut cavity forms. The depth of the cavity is determined by the feed rate of the cutting organ. FIG. 1 shows a kinematic diagram of the device; in fig. 2 is an example of the mutual arrangement of the cutting elements. The device includes a housing 1 in which gears 3 are mounted on the shafts 2, which are engaged in engagement, which are driven by the motors 4 through the clutch 5. Cutting tools are fixed on the shafts 2 b. The device is moved by a lifting mechanism 7 in directions to dim 8. The device can be located both below and above the flask 9 with compacted molding sand 10. The distance between the shafts 2 is smaller than the diameter of the circle described during the rotation of each tool. 6, and the tools are oriented so that they do not prevent each other during rotation. This achieves a mutual overlap of the cavities, cut out by 1xx with each cutting tool, resulting in a cavity of complex configuration. The device works as follows. The motor 4 transfers the torque through the clutch 5, the test 3 and the shafts 2 to the cutting tools B. Lift mechanism 7. moves the device case 1 along the rails 8. When the rotating cutting tools 6 come into contact with the molding mixture 10, a cavity is cut out. During rotation, the cutting tools b cut out the cavities in the form of those rotations that, overlapping each other, form a cavity of a complex configuration in one stroke of the cutting body in the direction of the mold. When the required depth of the cavity is reached, the lifting mechanism 7 returns the device to its original position, 9 with the cut out element of the form, it is transmitted to the next position, and its place is taken by the following box. The use of the proposed device allows to obtain elements of sand casting molds of complex configuration without molding models in one pass of the cutting organ, which simplifies the operation, shortens its duration and improves the performance of the molding equipment. Claim device for manufacturing elements of casting molds, containing a cutting organ, characterized in that, in order to speed up the process of obtaining elements of sand casting molds of complex configuration, the cutting board is made in the form of a set of cutting tools kinematically interconnected and spaced from each other. at a distance less than the diameter of the circle described by the rotation of each tool. Sources of information taken into account during the examination 1.Aksenov P.N. Equipment foundries. I., Mechanical Engineering, 1977, p. 23, 14 and 149.

2. USSR author's certificate number 478669, cl. B 22 C 23/00, 1974.