SU889293A1

SU889293A1 - Turret head

Info

Publication number: SU889293A1
Application number: SU802890214A
Authority: SU
Inventors: Семен Вульфович Медведник
Original assignee: Московское Особое Конструкторское Бюро Металлорежущих Станков
Priority date: 1980-03-06
Filing date: 1980-03-06
Publication date: 1981-12-15

Description

(54) РЕВОЛЬВЕРНАЯ ГОЛОВКА(54) REVOLUTION HEAD

1one

Изобретение относитс к станкостроению, а именно к станкам, в которых требуетс смена инструмента поворотом головки в процессе обработки издели .The invention relates to a machine tool industry, in particular to machines in which a tool change is required by turning the head during machining.

Известна револьверна головка, содержаш ,а размещенный в корпусе шпиндель, несущий инструментальный блок, механизм его поворота и фиксации с приводом от гидроцилиндра 1.Known turret head, containing, and placed in the case of the spindle, the bearing tool unit, the mechanism of its rotation and fixation driven by a hydraulic cylinder 1.

Недостатком данной револьверной головки вл етс сложность конструкции, поскольку дл поворота и фиксации она снабжена двум гидроцилиндрами, что увеличивает врем обработки и усложн ет гидросистему питани цилиндров.The disadvantage of this turret is the complexity of the design, since it is equipped with two hydraulic cylinders for turning and fixing, which increases the processing time and complicates the hydraulic supply system of the cylinders.

Цель изобретени - упрощение конструкции при сокращении цикла поворота головки .The purpose of the invention is to simplify the design while shortening the head rotation cycle.

Дл достижени поставленной цели, механизм поворота инфиксации снабжен неравноплечим рычагом, опора которого щарнирно установлена на щтоке гидроцилиндра с осью, параллельной оси инструментального блока и отсто щей от него на рассто нии, равном длине .меньшего плеча рычага, при этом рычаг меньшим плечом шарнирно св зан с введенной в головку зубчатой полумуфтой , закрепленной на шпинделе, а большим плечом - с введением в головку шлицевым валом, установленными в корпусе с возможностью осевого перемещени и снабженным поворотным зубчатым сектором, кинематически св занны.м с инструментальным блоком посредством введенной в головку второй зубчатой полумуфтой, установленной на цилиндре с возможностью поворота.To achieve this goal, the rotation mechanism of the fixation is equipped with an unequal arm, the support of which is pivotally mounted on the hydraulic cylinder rod with an axis parallel to the axis of the tool block and spaced from it at a distance equal to the length of the smaller lever arm, while the lever is smaller with a toothed coupling half inserted into the head, mounted on the spindle, and a large shoulder with a splined shaft inserted into the head, mounted in the housing with the possibility of axial movement and equipped with a rotating gear. m sector, kinematically connected with the instrumental unit by means of the second toothed coupling inserted into the head, which is rotatably mounted on the cylinder.

На чертеже представлена револьверна головка, продольный разрез.The drawing shows a turret head, a longitudinal section.

Револьверна головка содержит корпус 1 с крышкой 2 и с размещенным в нем шпинделем 3, несущим на одном конце инструментальный блок 4 с инструментами 5, а на другом - шестерню 6.The revolving head comprises a housing 1 with a lid 2 and with a spindle 3 housed therein, carrying at one end a tool block 4 with tools 5, and at the other end - a gear 6.

На шпинделе 3 закреплена также зубчата полумуфта 7, взаимодействующа с закрепленной в корпусе I зубчатой полумуфтой 8 и размещен зубчатый сектор 9, выполненный с торцовыми зубь ми дл взаимодействи с кулачковой полумуфтой 10.A spindle coupling 7 is also attached to the spindle 3, which interacts with the toothed coupling half fixed in the housing I, and a gear sector 9 arranged with face teeth for interacting with the cam coupling half 10 is placed.

Зубчатый сектор 9 установлен в корпусе 20 1 на подшипниках 11.Gear sector 9 is installed in the housing 20 1 on bearings 11.

Claims

In parallel with the spindle 3, a hydraulic cylinder 12 is placed in the lid 2, on the stem 13. Which by means of the axis 14 has a double-arm lever 15. The end of the short arm of the lever 15 is embedded in the groove of the coupling half 10, and the end of the long arm is in the groove of the push rod 16 having a splined connection in the cover 2, a sleeve 17. At one end of the pusher 16, two stop nuts 18 are screwed, the other end has a screw connection with the sleeve 19 fixed in the toothed sector 20 which engages with the toothed sector 9. The sector 20 brakes frictionally clutch 21, the braking torque is controlled by a screw 22. schesterney 6 interacts schestern 23 (with gear otnoscheniya 1: 1) on which are fixed 24 measles limit switches 25, the angular position of the tool unit 4. The apparatus operates as follows. When moving the stem 13 of the hydraulic cylinder 12 from right to left due to the difference in resistance to the displacement force, the end of the long arm of the lever 15 in contact with the pusher 16 remains in place, and the end of the short arm of the lever 15 moves the spindle 3 to the closing of the teeth of the half coupling 10 and the gear sector 9. The gear half couplings 7 and 8 open at the same time. Upon further movement of the rod 13 to the left, the lever 15 moves in the same direction and the pusher 16, which, by its screw thread through the sleeve 19 and the gear sectors 20 and 9, rotates the spindle 3 to the next position of the tool block 4, defined by size a. At the end of the movement, the pusher 16 bark 24 closes the limit switch 25, which gives a command to retract the hydraulic cylinder 12. During the reverse stroke of the rod 13, the lever 15 moves the spindle 3 from left to right until the coupling half 10 and the gear sector 9 close. and 8. Next, the lever 15 will move the pusher 16 from left to right, while the gear sectors 9 and 20 rotate back to idle. The pressure in the rod cavity of the hydraulic cylinder 12 reaches such a value that at the time of return of the pusher 16 until it stops on the sleeve 18, the force The closing of the 1x coupling half 7 and 8 ensures that the tool block 4 is precisely locked in the working position. When re-adjusting the head to another number of working positions (tools) located with an equal clamp around the circumference of the tool block, the size is changed by adjusting the stop nuts 18. The proposed design allows the number of divisions of the turret rotation to be changed in accordance with the specified number of working positions , which eliminates idle strokes and reduces the processing time of the product, and the use of one hydraulic cylinder as a drive and fixation greatly simplifies the design of the head. Claims of the invention A revolving head comprising a spindle located in the housing, a carrying tool block, a mechanism for its rotation and fixation driven by a hydraulic cylinder, characterized in that, in order to simplify the design while reducing the rotation cycle, the mechanism of rotation and fixation is provided with an unequal arm, the support of which pivotally mounted on a hydraulic cylinder rod with an axis parallel to the axis of the tool block and spaced from it at a distance equal to the length of the smaller arm of the lever, while the lever with the smaller arm but connected with a toothed half-coupling inserted into the head, fixed on the pinch, and with a large shoulder to a split-tube shaft inserted into the head, mounted in the housing with axial displacement and equipped with a rotating gear sector, kinematically connected with the instrumental block by means of a second gear inserted into the die half coupling mounted on the cylinder with the possibility of rotation. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 571408, cl. B 23 B 29/32, 1976.