SU837575A1

SU837575A1 - Cutting tool head

Info

Publication number: SU837575A1
Application number: SU792842650A
Authority: SU
Inventors: Алексей Александрович Скиба; Петр Федорович Журиков
Original assignee: Алтайский Филиал Всесоюзного Проектно-Конструкторского Технологическогоинститута Атомкотломаш
Priority date: 1979-10-11
Filing date: 1979-10-11
Publication date: 1981-06-15

Description

1one

Изобретение относитс к механической обработке и может быть использовано при резке труб.The invention relates to machining and can be used when cutting pipes.

Известна резцова головка, содержаща планшайбу, несущую двуплечий рычаг с резцом и копирующим роликом, установленным на пальце, шпиндель, кулачок подачи резца, кинематически св занный с тормозным устройством,и механизм включени подачи 1.A cutter head is known, comprising a faceplate supporting a double-arm lever with a cutter and a copying roller mounted on a finger, a spindle, a cutter feed cam kinematically connected with a braking device, and a feed starting mechanism 1.

Недостатком данного устройства вл етс сложность переналадки головки при изменении диаметра отрезаемой трубы и повышенный износ рабочей поверхности кулачка подачи вследствие ударных нагрузок при переключени х.The disadvantage of this device is the difficulty of retooling the head when changing the diameter of the cut pipe and increased wear of the working surface of the feed cam due to shock loads during switching.

Цель изобретени сокращение времени переналадки и повышение срока службы головки.The purpose of the invention is to reduce the changeover time and increase the service life of the head.

Поставленна цель достигаетс тем, что на шпинделе по обеим сторонам кулачка подачиустановлены два диска, .св занные с ним посредством дополнительно введенных сухарей и упругих элементов, а палец - выполнен эксцентричным и смонтирован с возможностью поворота и фиксации в заданном положении.The goal is achieved by installing two disks on the spindle on both sides of the feed cam, connected to it by means of additionally introduced rusks and elastic elements, and the finger is made eccentric and mounted with the possibility of rotation and fixation in a predetermined position.

На фиг.1 изображена головка, разрез ; на фиг.2 - палец с копирующимFigure 1 shows the head section; figure 2 - finger with copying

роликом и кулачок подачи; на фиг.З вид А на фиг.1; на фиг.4 - разрез В-Б на фиг..roller and feed cam; in FIG. 3, view A in FIG. 1; figure 4 - section bb in fig ..

Резцова головка включает шпиндель 1, к фланцу которого крепитс планшайба 2 с закрепленным на оси 3 рычагом 4. Рычаг содержит на одном конце резцедержатель 5, а на другом с возможностью вращени палец 6, на The cutting head includes a spindle 1, to the flange of which the faceplate 2 is attached with a lever 4 fixed on axis 3. The lever contains a tool holder 5 at one end and a finger 6 at the other with the possibility of rotation

0 эксцентричном конце которого установлен копирующий ролик 7. Противоположный конец пальца выполнен квадратного сечени с одетой полумуфтой 8 с риской и мелкими зубь ми, прижимаема к неподвижной полумуфте 9 гайкой 10. В выточке 11 рычага 4 установлена пружина 12. На рычаге 4 закреплена шкапа 13 с делени ми, отградированными соответственным ди0 аметром труб.0 an eccentric end of which has a copying roller 7. The opposite end of the finger is made of square section with a dressed coupling half 8 with a riz and small teeth, pressed against the fixed coupling half 9 with a nut 10. A spring 12 is mounted on the notch 11 of the lever 4 the divisions are separated by the corresponding pipe diameter.

Копирующий ролик 7 взаимодействует с кулачком подачи, выполненным из трех дисков 14 и 15. Крайние диски 14 расположены на шпинделе 16. Сред5 ний диск 15, рабоча поверхность которого выполнена по архимедовой спирали , имеет возможность перемещатьс относительно крайних дисков. Между дискс1ми 14 и 15 установлены сухариThe copy roller 7 interacts with a feed cam made of three disks 14 and 15. The extreme disks 14 are located on the spindle 16. The middle disk 15, whose working surface is made along an archimedean spiral, has the ability to move relative to the extreme disks. Between the discs 14 and 15 are installed crackers.

Claims

0 17 and springs 18. Faceplate 2 and cam (discs 14 and 15) are kinematically connected to each other by means of cam clutch 19 and have different peripheral speeds, the feed cam (discs 14 and 15) is kinematically connected with electromagnetic brake 20 by means of spindle 16 gear-shaft 21. Automation of the control of the working cycle of the cutting head is carried out by a switching device, made in the form of a movable cam 22 and two disks 23 and 24. The disk 23 and cam 22 are fixed on one common housing 25, interacting with sensors 26 and 27. Lever 4 Supply Elastic El ment 28. Work tool head is carried out as follows. When the cam clutch 19 is turned off, the feed cam (disks 14 and 15) rotates at a speed equal to the surrounding speed of the faceplate 2. This is due to the stop of the copying roller 7 in the cam protrusion. When the working feed of the cam-cam clutch is turned on, the clutch 19 engages with the gear unit associated with the cam-feed cam (discs 14 15 15}, thereby changing the rotation speed of the feed cam relative to the speed of rotation of the faceplate

2. In this case, the protrusion of the disk 24, kinematically associated with the faceplate 2, exits from the cavity of the disk 23, kinematically associated with the feed cam, thereby turning on the sensor 26 for monitoring the return cam feed to its original position. With further relative rotation of the faceplate 2 and feed cam (disks 14 and 15), the protrusion of the movable cam 22 (adjusted according to its scale to a certain pipe wall thickness) interacts with the protrusion of the disk. 24, whereby the sensor 27 is turned on, giving a command to disconnect the cam clutch 19 from the feed cam gear assembly (disks 14 and 15) and to engage the electromagnetic brake 20 associated with the feed cam. In the process of braking the feed cam (disks 14 and 15), at constant rotation of the faceplate 2, the copying roller 7, constantly pressed by the elastic element 28 to the working surface of the feed cam, falls into the depression of the feed cam disc 15, moves the tool to its original position. The impact that occurs when the copying roller 7 returns to the depression of the disk 15 by compressing the springs 18 between the crackers 17 occurs due to the relative movement of the disks 14 and 15. When returning the copying roller 7 to the depression of the disk 15, the protrusion of the disk 24 returns to the depression of the disk 23 and the sensor 26 disconnects the electromagnetic brake 20. To re-adjust the cutting head to a different diameter than the pipe diameter, it is necessary to unscrew the nut 10 by several turns, while the spring 12 leads the coupling half 8 out of the engagement with the coupling half 9; using the collar of finger b, combine the mark on the half coupling 8 with the corresponding scale division of 13, then, holding the finger b, tighten 10. Formula of the invention Cutting head containing faceplate-double-arm carrying lever with a cutter and a copying roller mounted on the finger, spindle with feed cam a cutter, kinematically connected with a brake device, and a feed start mechanism, typically because, in order to reduce changeover time and increase service life, there are two discs on the spindle on both sides of the feed cam, therewith through additionally introduced rusks and elastic elements and a finger is formed with an eccentric and is mounted vozmozhnostn rotation and fixation zgschannom position. Sources of information taken into account in the examination 1. USSR author's certificate №448674, cl. B 23 B 5/14, 1974. 6