SU780971A1

SU780971A1 - Combined tool

Info

Publication number: SU780971A1
Application number: SU782709063A
Authority: SU
Inventors: Владимир Анатольевич Бауман; Ярослав Николаевич Отений
Original assignee: Карагандинский политехнический институт
Priority date: 1978-11-20
Filing date: 1978-11-20
Publication date: 1980-11-23

Description

Изобретение относится к металлообработке.The invention relates to metalworking.

Известен комбинированный инструмент, содержащий оправку, на которой установлены резцовая и раскатная головки (1 ].Known combination tool containing a mandrel on which mounted a cutter and a rolling head (1].

Недостатком известной конструкции является необходимость предварительной наладки резцов на требуемый размер, причем каждый из трех равнорасположенных по окружности резцовой головки резцов настраивается на размер независимо от других. Это ведет к снижению точности и производительности обработки.A disadvantage of the known design is the need for preliminary adjustment of the incisors to the required size, and each of the three equally spaced around the circumference of the incisor head of the incisors is adjusted to the size independently of the others. This leads to reduced accuracy and processing performance.

Цель изобретения - повышение производительности и точности обработки.The purpose of the invention is to increase productivity and processing accuracy.

Указанная цель достигается тем, что резцовая головка выполнена в виде набора круглых резцов и установлена на оправке посредством упорных подшипников.This goal is achieved by the fact that the cutter head is made in the form of a set of round cutters and mounted on the mandrel by thrust bearings.

На чертеже изображен описываемый инструмент, продольный разрез.The drawing shows the described tool, a longitudinal section.

На оправке 1 инструмента установлена на ко-_лнических упорных подшипниках 2 резцовая головка 3, представляющая собой набор круглых резцов 4. На резцовой головке 3 расположено пластмассовое кольцо 5, центрирующее инструмент по оси отверстия при выводе. За резцовой головкой 3 на оправке 1 размещен опорный конус 6, на который опираются деформирующие ролики 7, расположенные в сепараторе 8.Mandrel 1 is mounted on the tool Ko _l nical thrust bearings 2 tool head 3, which is a set of circular cutters 4. At the cutting head 3 is arranged a plastic ring 5, the centering tool according to the hole axis the derivation. Behind the cutting head 3, a support cone 6 is placed on the mandrel 1, on which the deforming rollers 7 located in the separator 8 are supported.

Перед началом обработки деталь приводится во вращение, инструмент подводится к обрабатываемому отверстию и ему сообщается рабочая продольная подача. В момент соприкосновения круглых резцов 4 с обрабатываемой деталью они начинают вращаться со скоростью вращения детали, т.е. резцы 4 не имеют вращательного движения относительно детали. После этого, под воздействием усилия подачи, происходит съем металла, аналогичный съему металла при протягивании. При дальнейшем перемещении инструмента относительно детали происходит одновременная обработка поверхности от_:верстня резанием и пластическим' деформированием. Лимитирующая осевая подача определяется роликами 7. При раскатывании диаметр обрабатываемого пластическим деформированием отверстия несколько увеличится по сравнению с диаметром после резания. После окончания обработки ролики'7 смещаются к меньшему основанию опорного конуса 6 и инструменту сообщается подача в обратном направлении. При этом кольцо 5 центрирует инструмент по оси отверстия. _s Before the start of processing, the part is rotated, the tool is brought to the hole to be machined and the working longitudinal feed is communicated to it. At the moment of contact of the round cutters 4 with the workpiece, they begin to rotate with the speed of rotation of the part, i.e. the cutters 4 do not have a rotational movement relative to the part. After that, under the influence of the feed force, the metal is removed, similar to the removal of metal during pulling. With further movement of the tool relative to the part, the surface is simultaneously processed from _{: the} top by cutting and plastic deformation. The limiting axial feed is determined by the rollers 7. When rolling, the diameter of the hole processed by plastic deformation increases slightly compared to the diameter after cutting. After the end of the processing, the rollers'7 are displaced to the smaller base of the support cone 6 and the tool is fed in the opposite direction. In this case, the ring 5 centers the tool along the axis of the hole. _s

В результате применения описываемого инструмента увеличивается производительность за счет увеличения подачи и снижения времени на настройку резцов. Круглые резцы являются мерным инструментом, что приводит к повыше- 10 нию точности обработки.As a result of the use of the described tool, productivity is increased by increasing the feed rate and reducing the time for setting the cutters. Round cutters are a dimensional tool, which leads to an increase in the accuracy of processing.

Claims

The invention relates to metalworking. A combination tool is known, comprising a mandrel on which a cutting and rolling head are mounted. from others. This leads to a decrease in the accuracy and productivity of processing. The purpose of the invention is to increase the productivity and accuracy of processing. This is achieved by the fact that the cutting head is made in the form of a set of circular cutters and mounted on a mandrel by means of thrust bearings. The drawing shows a descriptive tool, a longitudinal section. incisors 4. On the incisal head 3 there is a plastic ring 5 centering the tool along the axis of the hole during the withdrawal. Behind the incisal head 3 on the mandrel 1 there is a support cone 6 on which the deforming rests e rollers 7 located in the separator 8. Before treatment item is rotated, the tool is conducted to obrabattaemomu hole and it communicates the working traverse. At the moment of contact of the circular incisors 4 with the treated part, the OCIs begin to rotate with the speed of rotation of the part, i.e. the cutters 4 have no rotational motion relative to the part. After that, under the influence of the supply force, the atoll will be eaten, similar to the removal of the metal during nrotting. Upon further displacement of the tool relative to the part, the surface of the hole is simultaneously processed by cutting and plastic deformation. The axial feedrate is determined by the rollers 7. When rolling, the diameter of the plastic threading by the plastic deformation will slightly increase compared to the diameter after cutting. After processing 37 is finished, the rollers 7 are displaced to the smaller base of the support cone 6 and the tool is advised to feed in the opposite direction. When this is the ring 5 centers the tool along the axis of the hole. As a result of the use of a writeable tool, productivity is increased by increasing the feed rate and reducing the time to adjust the cutters. Round cutters are a dimensional tool, which leads to an increase in machining accuracy. Claims of the invention A combined tool comprising a mandrel on which a cutting and rolling head is installed, characterized in that, in order to increase productivity and machining accuracy, the cutting head is made as a set of circular cutters and mounted on a mandrel by means of thrust bearings. Sources of information taken into account in the examination 1. Konovalov, EG, et al. Chistova, and strengthening rotational machining of surfaces. High School, Minsk, 1968. p. 322, fig. 92 ..