SU956175A1

SU956175A1 - Drilling head

Info

Publication number: SU956175A1
Application number: SU802991256A
Authority: SU
Inventors: Феликс Николаевич Канареев; Александр Олегович Харченко
Original assignee: Севастопольский Приборостроительный Институт
Priority date: 1980-10-08
Filing date: 1980-10-08
Publication date: 1982-09-07

Description

(54) СВЕРЛИЛЬНАЯ ГОЛОВКА(54) DRILLING HEAD

1one

Изобретение относитс к области обработки металлов резанием и может быть использовано при сверлении глубоких отверстий малого диаметра.The invention relates to the field of metal cutting and can be used when drilling deep holes of small diameter.

Известна сверлильна головка, содержаща корпус, пиноль, ведущий и ведомый шпиндели и средства автоматического регулировани подачи и быстрого подвода. Ведомый шпиндель установлен с возможностью осевого перемещени относительно ведущего 1.A drilling head is known, comprising a housing, a quill, a master and a driven spindle, and means for automatically adjusting the feed and the rapid approach. The driven spindle is mounted for axial movement relative to the driving 1.

Недостатками устройства вл ютс низка надежность защиты инструмента и невысока производительность обработки.The drawbacks of the device are low reliability of tool protection and low processing performance.

Цель изобретени - повыщение производительности обработки и надежности защиты инструмента.The purpose of the invention is to increase processing performance and reliability of tool protection.

Эта цель достигаетс за счет того, что средство автоматического регулировани подачи выполнено в виде центробежного регул тора , св зывающего ведущий и ведомый щпиндели,и электромагнитного датчика крут щего момента, а средство быстрого подвода также имеет электромагнитный датчик. Причем кор этих датчиков установлены на ведомом щпинделе, а статоры - на ведущем .This goal is achieved due to the fact that the automatic feed control is made in the form of a centrifugal regulator, connecting the master and slave spindles, and an electromagnetic torque sensor, and the quick-feed means also has an electromagnetic sensor. Moreover, the core of these sensors are installed on the slave pin, and the stators - on the master.

На чертеже изображена предложенна сверлильна головка.The drawing shows the proposed drilling head.

В корпусе 1 сверлильной головки помещена пиноль 2, внутри которой установлен ведущий щпиндель 3 с зубчатым колесом 4. 5 На щпинделе 3 одним концом щарнирно закреплен рычажный механизм 5 центробежного регул тора, другой рычаг 6 которого щарнирно св зан с ведомым щпинделем 7. На переднем конце шпиндел закреплено 10 сверло 8. Между ведущим и ведомым щпиндел ми наход тс опора качени и пружина 10. Рычаги центробежного регул тора имеют балансировочные элементы II, зафиксированные винтом 12. В задней части щпиндел 3 установлены статоры 13 и 14 устройст5 ва быстрого подвода и датчика крут щего момента соответственно, их кор 15 и 16 установлены на щпинделе 7. Статоры имеют токосъемные кольца 17 и 18.Система управлени на чертеже не показана.In the housing 1 of the drilling head there is a quill 2, inside of which a leading shpindle 3 with a gear wheel 4 is mounted. 5 At the pin 3, with one end, the lever mechanism 5 of the centrifugal regulator is fixed with hinge, the other lever 6 of which is pivotally connected to the driven pin 7. At the front end The spindle is fixed 10 to the drill bit 8. Between the drive and the follower shpindles there is a rolling support and a spring 10. The levers of the centrifugal regulator have balancing elements II fixed by a screw 12. At the rear of the shpindles 3 are installed the stators 13 and 14 When the fast speed sensor and the torque sensor are located respectively, their cores 15 and 16 are mounted on the pinch 7. The stators have collector rings 17 and 18. The control system is not shown in the drawing.

Предлагаема сверлильна головка работает следующим образом.The proposed drilling head works as follows.

Claims

Voltage is supplied to the stator 13 of the fast approach, and the measles 15 together with the driven pin 7 quickly moves to the working position, the centrifugal regulator moves from the initial position A to the working L. Spindle 3 is transmitted through the wheel 4 by rotation mechanisms 5, 6 of the centrifugal regulator, the pin 7. At the same time, from the feed drive, the quill 2 moves in the guides of the housing 1 with the required amount of feed towards the workpiece 19. The balancing elements 11 of the centrifugal regulator ora selected so that R Yass where R - The total reaction is speedy centrifugal regulator on the spindle 7 in the axial direction; p j is the maximum allowable axial cutting force during drilling. The hole is drilled in the part 19. With a sharp increase in the axial cutting force for any reason, the levers 5, 6 of the centrifugal regulator, moving from position L to position A, stop the feed of the pinch 7 and drills 8 with respect to part 19 (to avoid breakages), and with respect to the quill 2 continuing to descend and the spindle 3, the spindle 7 rises upwards together with the core 16. The information about the change in the magnetic flux in the stator 14 of the torque sensor enters the quill supply control system, and the supply is automatically reduced. When the centrifugal regulator A is reached, the feed is stopped. However, the rotational drive of the spindle 7 continues to operate, and the drill 8 continues to rotate. Under the action of the reaction forces of the centrifugal regulator, the drill bit is inserted into the metal, the bark 16 is lowered relative to the stator 14, a command is formed to turn on the quill 2 supply drive, the feed drive is turned on, and the processing continues. By moving the balance bar 11 of the centrifugal regulator or by changing the masses m of the balancing element, the total reaction D mv к-Q is established, where Y is the speed of rotation of the spindle; D is the diameter of the trajectory of the rotation, no balance. / JuDn tt "-TOOO- The work cycle is repeated until the hole has been drilled to the desired length of treatment. The end of the drilling is fixed by pressing a special cam on the limit switch, which turns on the reverse of the feed drive chain. The drilling head is retracted to its original position, where the cam acts on another limit switch. The proposed drilling head makes it possible to increase the reliability of protection against breakages, reduce tool consumption and reduce the scrap of workpieces. In addition, high operational reliability, ease of maintenance and repair, and increased productivity are ensured. Claims of the invention A drilling head comprising a housing, a quill, a master and a driven spindle, the driven spindle being axially displaced relative to the master, means for automatically controlling the feed and fast advancing, characterized in that in order to increase the machining productivity and increase the reliability of tool protection , the automatic feed control is made in the form of a centrifugal regulator, connecting the master and slave spindles, and the electromagnetic sensor its moment, and the means of rapid supply also has an electromagnetic sensor, and the core of the sensors are installed on the driven spindle, and the stators - on the master. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 475223, cl. B 23 B 39/10, 1975 (prototype).