SU910295A1

SU910295A1 - Two-spindle automatic machine for knurling thread on studs

Info

Publication number: SU910295A1
Application number: SU802897712A
Authority: SU
Inventors: Василий Михайлович Луцкив; Игорь Борисович Волошин
Original assignee: Производственное Объединение "Электрон"
Priority date: 1980-03-24
Filing date: 1980-03-24
Publication date: 1982-03-07

Description

Изобретение относится к обработке металлов давлением, в частности, мо-> жет быть использовано для накатки резьбы ча шпильках общего и специального назначения.The invention relates to the processing of metals by pressure, in particular, it can be used for rolling threads on general and special purpose studs.

Известны двухроликовые реэьбона- ^Jкатные автоматы с загрузочными устройствами для подачи заготовок шпилек из бункера непосредственно на вращающиеся диски подающего механизма и затем в зону накатывания резьбы [Н. ^,β Known double-roll re- ^J- roller machines with loading devices for feeding the billet studs from the hopper directly to the rotating disks of the feeding mechanism and then to the thread rolling zone [N. ^β

Конструкция загрузочных устройств указанных автоматов не исключает возможности переплетения заготовок и заклинивания их на выходе из бункера между периферией вращающихся дисков и неподвижной стенкой бункера.The design of the loading devices of these machines does not exclude the possibility of interlacing the workpieces and jamming them at the exit from the hopper between the periphery of the rotating disks and the stationary wall of the hopper.

Известен также двухшпиндельный резьбонакатный автомат, .содержащий верхний и нижний шпиндели, на которых крепятся резьбонакатные ролики. Для приема заготовок шпилек и подачи на позицию заталкивания в резьбонакатный инструмент служат питатели типа змейка. Заталкивание заготовок в зазор между резьбонакатным роликом и резьбонакатным сегментом производится досылателем, совершающим возвратно-поступательное движение. После образования резьбы на одном конце заготовка падает в нижний питатель типа змейка, а затем досылателем подается в эону накатывания резьбы на другом конце [2].Also known is a twin-spindle thread rolling machine, comprising upper and lower spindles on which thread rolling rollers are mounted. To receive the workpieces of the studs and feed to the pushing position into the thread rolling tool, there are snake-type feeders. The workpieces are pushed into the gap between the thread rolling roller and the thread rolling segment by a rammer that performs a reciprocating motion. After the formation of the thread at one end, the workpiece falls into the lower feeder of the snake type, and then it is fed into the eon of rolling the thread at the other end [2].

Недостаток автомата - застревание заготовок шпилек в верхнем и нижнем питателях. Кроме того, досылатель совершает наряду с рабочими холостые ходы.The disadvantage of the machine is the jamming of the stud blanks in the upper and lower feeders. In addition, the rammer performs idling along with the workers.

Цель изобретения - повышение производительности и надежности работы автомата .The purpose of the invention is to increase the productivity and reliability of the machine.

Эта цель достигается тем, что двухшпиндельный автомат для накатки резьбы на шпильках, содержащий станину, загрузочный бункер, два подающих механизма и -два резьбонакатных ролика с неподвижными резьбонакатными сегмеи3 910295 4 тами, снабжен двумя парами кронштейнов, установленных на станине с возможностыо их регулировки параллельно оси накатки и связанных с подающим механизмом, выполненным в виде дисков ₅с пазами на периферии с сегментными ограничителями, установленными по периферии дисков и смещенными от плоскости·, проходящей через центры дисков, на 25-30° в сторону, противопо- ю ложную кронштейнам, а загрузочный бункер выполнен с удлиненной стенкой, образующей совместно с одной парой кронштейнов приемный и раздаточный ртсеки. ₁₅ This goal is achieved by the fact that the twin-spindle automatic knurling machine with studs, containing a bed, a loading hopper, two feed mechanisms and two thread rolling rollers with fixed thread rolling segments 3 910295 4 toms, is equipped with two pairs of brackets mounted on the bed with the possibility of their adjustment parallel to the axis knurling and associated with the feeding mechanism, made in the form of disks ₅ with grooves on the periphery with segment limiters installed on the periphery of the disks and offset from the plane passing through the center discs, 25-30 ° to the side opposite to the false brackets, and the loading hopper is made with an elongated wall, which together with one pair of brackets forms a receiving and distributing rtseki. _fifteen

На фиг. 1 изображена кинематическая схема; на фиг. 2 показан продольный разрез автомата. .In FIG. 1 shows a kinematic diagram; in FIG. 2 shows a longitudinal section of the machine. .

Автомат содержит загрузочный бункер 1, смонтированный на станине 2. ₂₀ The machine contains a loading hopper 1 mounted on a bed 2. ₂₀

На направляющей 3 установлены два раздвижных кронштейна 4 с вогнутыми несущими поверхностями. Два раздвижных диска 5 с пазами закреплены на валу 6. Диски огибают сегментные огра- ₂₅ничители 7, служащие для удержания заготовок в гнездах дисков при подаче их в зону накатывания резьбы, установленные на направляющих 8. На валу 6 смонтированы зубчатая муфта 9 ₃₀ для настройки синхронизированной подачи заготовок в зону накатки и зубчатое колесо 10.On the guide 3 there are two sliding brackets 4 with concave bearing surfaces. Two sliding the slotted disc 5 mounted on the shaft 6. The discs bend around segment ₂₅ confine nichiteli 7 which serve to hold workpieces in nests disks when applying them in the rolling zone of the thread, mounted on rails 8. On the shaft 6 mounted toothed coupling 9 settings ₃₀ synchronized supply of blanks to the knurling zone and the gear wheel 10.

Верхнее резьбонакатное устройство автомата включает шпиндель 11, на котором закреплены резьбонакатный ролик 12, шестерня 13 и зубчатое колесо 14. В обойме 15 размещен резьбонакатный сегмент 16. Для получения требуемого зазора между резьбонакатным роликом и резьбонакатным сегментом имеется механизм регулировки 17. На направляющей 18 установлены два раздвижных кронштейна 19 с наклонными несущими поверхностями, раздвижные диски с пазами 20, сегментные ограничители 21 на направляющей 22, вал 23, зубчатая муфта 24 и зубчатое колесо 25·The upper thread rolling device of the machine includes a spindle 11 on which the thread rolling roller 12, gear 13 and gear wheel 14 are fixed. A thread rolling segment 16 is placed in the cage 15. To obtain the required clearance between the thread rolling roller and the thread rolling segment there is an adjustment mechanism 17. Two are mounted on the guide 18 sliding brackets 19 with inclined bearing surfaces, sliding disks with grooves 20, segment stoppers 21 on guide 22, shaft 23, gear coupling 24 and gear 25 ·

Нижнее резьбонакатное устройство ⁵⁰содержит шпиндель 26, резьбонакатный ролик 27, шестерню 28, зубчатое колесо.29, резьбондкатный сегмент 30 в •обойме 31 и механизм регулировки 32.The lower thread rolling device ⁵⁰ includes a spindle 26, a thread rolling roller 27, a gear 28, a gear wheel. 29, a thread rolling segment 30 in a yoke 31 and an adjustment mechanism 32.

В состав автомата также входят про- 55 межуточные валы 33 и 34 с шестернями 35 и 36, распределительный вал 37 с закрепленными шестернями 38 и 39_л зубчатым колесом 40 и электромеханический привод 41 с шестерней.42.The machine also includes 55 intermediate shafts 33 and 34 with gears 35 and 36, a camshaft 37 with fixed gears 38 and 39 _{l by} gear wheel 40, and an electromechanical drive 41 with gear.42.

Предложенный автомат работает следующим образом. От электромеханического привода 41 посредством шестерни 42 и зубчатого колеса 40 вращение передается распределительному валу 37. Через шестерни 38 и 35 и зубчатое колесо 14 вращение передается шпинделю 11 верхнего резьбонакатного устройства с резьбонакатным роликом 12. Через шестерни 39 и 36 и зубчатое колесо 29 вращение передается шпинделю 26 нижнего резьбонакатного устройства с резьбонакатным роликом 27· Вал 6 с дисками 5 верхнего подающего механизма приводится во вращение от шпинделя 11 через шестерню 13 и зубчатое колесо 1G. Вал 23 с дисками 20 нижнего подающего механизма приводится во вращение от шпинделя 26 через шестерню 28 и зубчатое колесо 25.The proposed machine operates as follows. From the electromechanical drive 41, through the gear 42 and the gear 40, the rotation is transmitted to the camshaft 37. Through the gears 38 and 35 and the gear 14 the rotation is transmitted to the spindle 11 of the upper thread rolling device with the thread rolling roller 12. Through the gears 39 and 36 and the gear 29 the rotation is transmitted to the spindle 26 of the lower thread rolling device with a thread rolling roller 27 · The shaft 6 with the disks 5 of the upper feeding mechanism is driven from the spindle 11 through the gear 13 and the gear 1G. The shaft 23 with the disks 20 of the lower feed mechanism is driven from the spindle 26 through the gear 28 and the gear 25.

Заготовки шпилек, заложенные в загрузочный бункер 1 штабелем, под собственным весом по удлиненной стенке движутся в приемный отсек и по вогнутым несущим поверхностям кронштейнов 4 через щель между нижней кромкой удлиненной стенки загрузочного бункера и кронштейном - в раздаточный отсек.The billet studs, laid in the loading hopper 1 with a stack, under their own weight along the elongated wall move into the receiving compartment and along the concave bearing surfaces of the brackets 4 through the gap between the lower edge of the elongated wall of the loading hopper and the bracket into the dispensing compartment.

Удлиненная стенка загрузочного бункера, разделяя рабочее пространство на приемный и раздаточный отсеки, позволяет избежать попадания заготовок на выпуклые поверхности дисков 5 навалом. Затем заготовки захватываются пазами вращающихся дисков.The elongated wall of the loading hopper, dividing the working space into the receiving and distributing compartments, allows you to avoid getting blanks on the convex surfaces of the disks 5 in bulk. Then the workpiece is captured by the grooves of the rotating discs.

В случае захвата заготовки одним пазом вращающегося диска за один конец другой конец на участке выпуклой поверхности дисков от дна магазина по направлению вращения до вертикальной оси дисков свисает, а на участке выпуклой поверхности дисков сразу после вертикальной оси находится выше захваченного. На этом обнаженном, не закрытом сегментным ограничителем, участке поверхности дисков в 25^_30^внезахваченный конец заготовки под собственным весом успевает скатиться вниз и запасть в паз барабана, т.е. принять сориентированное положение, после чего оба конца заготовки свободно проходят под ограничителем в зону накатывания резьбы без заклинивания. Дисками 5 заготовки подаются в зазор между вращающимися резьбонакатным роликом 12 и резьбонакатным сеггмен5 910295 том 16 верхнего резьбонакатного устройства. Происходит накатывание резьбы на одном конце заготовки. Затем заготовки поштучно попадают на наклон-, ные несущие поверхности кронштейнов 19 5 и под собственным весом движутся до встречи с выпуклыми поверхностями вращающихся дисков 20, которые своими пазами захватывают их и подают * в зазор между вращающимся резьбонакатю ным роликом 26 и резьбонакатным сегментом 2-7 нижнего резьбонакатного устройства. Происходит накатывание резьбы на другом конце заготовки.In the case of a workpiece being gripped by one groove of a rotating disk at one end, the other end hangs over the portion of the convex surface of the disks from the bottom of the magazine in the direction of rotation to the vertical axis of the disks, and is located above the trapped in the area of the convex surface of the disks immediately after the vertical axis. In this nude not closed segment restrictor disc surface portion 25 ^_ ³⁰ unseized end of the preform by its own weight has time to sink down and slide down in the groove of the drum, i.e., take a oriented position, after which both ends of the workpiece pass freely under the limiter into the thread rolling zone without jamming. The disks 5 of the workpiece are fed into the gap between the rotating thread rolling roller 12 and thread rolling segment 5 910295 volume 16 of the upper thread rolling device. Thread rolling occurs at one end of the workpiece. Then the workpieces piece by piece fall on the inclined, bearing surfaces of the brackets 19 5 and, under their own weight, move until they meet the convex surfaces of the rotating disks 20, which grasp them with their grooves and feed * into the gap between the rotating thread rolling roller 26 and thread rolling segment 2-7 lower thread rolling device. Thread rolling occurs at the other end of the workpiece.

Экономическая эффективность от is внедрения автомата 5 тыс. руб. в год.Economic efficiency from the implementation of the machine 5 thousand rubles. in year.

Claims

This invention relates to operational | Metals by pressure, in particular, MO-fzhe be used for rolling thread for general and special purpose studs. Two-roll screw-rolling machines with cTBaf-w loading devices are known for supplying blanks from the bunker directly to the rotating disks of the feed mechanism and then to the threading zone of the SP thread. The design of the loading devices of these machines does not exclude the possibility of weaving blanks and jamming them at the exit from the bunker between the periphery of the rotating disks and the fixed wall of the bunker. Also known is a dual-spindle threaded rolling machine, comprising upper and lower spindles on which the threaded rollers are attached. In order to receive the stud blanks and feed them to the pushing position in the thread rolling tool, the zor feeders between the thread rolling roller and the thread rolling segment are made by a reciprocating reciprocating movement. After threading at one end, the workpiece falls into the lower feeder of the snake type, and then is delivered by the rammer to the thread rolling area at the other end. 2 The lack of an automaton is the jamming of the stud blanks in the upper and lower feeders. In addition, the rammer idles along with the workers. The purpose of the invention is to improve the performance and reliability of the machine. This goal is achieved by the fact that a two-pin thread rolling machine on heels containing a frame, a loading hopper, two feeding mechanisms and two thread rolling rollers with fixed thread rolling segmes are equipped with two pairs of cores that are installed on the frame so that they can be adjusted in parallel knurling axes and associated with the feeder mechanism, made in the form of discs with grooves on the periphery with segment limiters mounted along the periphery of the discs and displaced from the plane, passing through the centers of Skov, 25-30 in the direction opposite to the brackets and the loading buoy adapted elongated ker wall obrazukidey together with one pair of receiving arms and distributing compartments. FIG. 1 shows a kinematic scheme; Fig. 2 shows a longitudinal section of the automaton. . The machine contains a loading hopper 1 mounted on a bed 2. On the guide 3 two sliding brackets 4 are installed with concave bearing surfaces. Two sliding discs 5 with grooves are fixed, on board 6. The discs round off the segment stoppers 7. serving to hold the blanks in the disc slots when they are fed into the thread-rolling area, mounted on the guides 8. synchronized feeding of workpieces into the knurling area and gear wheel 10. The top thread rolling device of the machine includes a spindle 11, on which a thread rolling roller 12, gear wheel 13 and gear wheel C are fixed. In thread holder 15 there is a thread rolling segment 16. For floor The required clearance between the thread rolling roller and the thread rolling segment has an adjustment mechanism 17. On the guide 18 there are two sliding brackets 19 with inclined bearing surfaces, sliding discs with grooves 20, segment stops 21 on the guide 22, the shaft 23, the gear coupling 2 and gear 25. The lower thread rolling device contains spindle 2b, thread rolling roller 27, gear 28, gear wheel 29, thread; | roller segment 30 in - hole 31 and adjustment mechanism 32. The machine also includes intermediate shafts 33 and 3 with gears 35 and 36, a camshaft 37 with fixed gears 38 and a gear Q and an electromechanical drive with gear.f2. The proposed machine works as follows. From the electromechanical actuator 41, the gear K2 and the gear 40 rotate to the camshaft 37. Through gears 38 and 35 and the gear V, the rotation is transmitted to the spindle 11 of the upper thread-rolling device with the thread-rolling roller 12. 26 of the lower thread rolling device with a thread rolling roller 27. The shaft 6 with the disks 5 of the upper feeding mechanism is driven into rotation from the spindle 11 through the gear 13 and the gear wheel 10. The shaft 23 with the disks 20 lower of the feeding mechanism is driven from spindle 26 through gear 28 and gear 25. The stud blanks embedded in the hopper 1 by the stack move under their own weight along the elongated wall to the receiving compartment and along the slot between the lower edge of the elongated wall hopper and bracket - in the dispensing compartment. The elongated wall of the loading hopper, the section of the working space on the receiving and dispensing compartments, allows you to avoid blanks on the convex surfaces of the disks 5 in bulk. The blanks are then caught in the slots of the rotating discs. If the workpiece is gripped by one groove of a rotating disk at one end, the other end hangs down from the bottom of the magazine in the direction of rotation to the vertical axis of the disks in the convex surface of the disks, and above the gripped surface immediately after the vertical axis in the section of the convex surfaces of the disks. On this bare, not covered by the segment limiter, the surface area of the disks in 25-30 unclaimed end of the workpiece under its own weight has time to roll down and fall into the groove of the drum, i.e. take the orientated position, after which both ends of the workpiece freely pass under the stopper into the thread rolling zone without jamming. The workpiece disks 5 are fed into the gap between the rotating thread rolling roller 12 and the thread rolling segment 16 of the upper thread rolling device. Threading rolling on one end of the workpiece. Then, for cooking, one by one they fall on the inclined bearing surfaces of the brackets 19 and under their own weight move until they meet the convex surfaces of the rotating disks 20, which with their grooves capture them and feed into the gap between the rotating thread rolling roller 26 and the thread rolling segment 2-7 of the lower thread rolling device . Thread rolling on the other end of the workpiece occurs. Economic e () efficiency from the introduction of the machine 5 thousand rubles per year. DETAILED DESCRIPTION OF THE INVENTION A two-spindle heel-threading machine comprising a frame, a loading hopper, two feed mechanisms and two thread rolling rollers with fixed thread rolling segments, which is also equipped with two pairs of brackets, installed on the frame with the possibility of their adjustment in parallel with the knurling axis and associated with the feeder, made in the form of discs from the groove / "on the periphery with segment limiters, From the plane passing through the centers of the disks, in the direction opposite to the brackets, the hopper is made with an elongated wall, which together with one pair of brackets forms the receiving and dispensing compartments. Sources of information taken into account in the examination 1. Mechanization and automation of the processes of profile formation by the method of plastic deformation, review. Seri S-X-3, NIIMASH, 1971.

2. USSR author's certificate If cl. B 21 N 3/00, 06.21.67 (prototype).