SU683864A1

SU683864A1 - Rod-cutting device

Info

Publication number: SU683864A1
Application number: SU772542019A
Authority: SU
Inventors: Игорь Константинович Токарев; Энвер Мунирович Фазлулин; Сергей Николаевич Троицкий; Василий Александрович Иванков; Электрон Петрович Луговой; Дмитрий Федотович Мирошниченко
Original assignee: Московский автомеханический институт; Азовский завод кузнечно-прессовых автоматов
Priority date: 1977-11-11
Filing date: 1977-11-11
Publication date: 1979-09-05

Description

Изобретение относитс к области заготовительного производства машиностроительных заводов и может быть использовано лри резке прутков на за1гото.вки.The invention relates to the field of blanking production of machine-building plants and can be used for cutting rods into bars.

Известно устройство дл резки ирутков на заготовки, содержащее станину, приводной подвижный ,шток с ножом, неподвижный нож, а также механизм ограничени изгиба прутка, выполненный в виде подпружиненных рычагов с роликами, контактирующими с копиром {.A device for cutting irut-pieces into blanks is known, comprising a frame, a movable drive, a rod with a knife, a fixed knife, and also a mechanism for limiting the bending of a bar, made in the form of spring-loaded arms with rollers in contact with a copier.

К недостаткам известного устройства относитс невысокое качество получаемых заготовок, а также мала надежность работы .The disadvantages of the known device are the low quality of the obtained blanks, as well as low reliability of operation.

Цглью изобретени вл етс повышение качества получаемых заготовок.The scope of the invention is to improve the quality of the resulting blanks.

С этой целью устройство снабжено демпфером , соедин ющим рычаги механизма ограничени изгиба прутка, вьгпол енные двуплечими и установленные на станине, а колир смонтврован на приводном подвижном штоке.For this purpose, the device is equipped with a damper that connects the levers of the mechanism for limiting the bending of the rod, which is double-shouldered and mounted on the frame, and the calier is mounted on the driving movable rod.

На фиг. 1 показан общий вид устройства; на фиг. 2 -- сечение А-А фиг. 1; на фиг. 3 - узел I фиг. 1.FIG. 1 shows a general view of the device; in fig. 2 is a section A-A of FIG. one; in fig. 3 - node I of FIG. one.

Устройство дл резки лрутков на заготовки содержит станину /, приводной подвижиый шток 2, на котором закреллены нож 3 и копир 4, а также механизм ограничени изгиба прутка, вьтолненный в виде двуплечих рычагов 5, установленных на станине 1 на ненодвиж ой оси 6. Одно плечо каждого рычага 5 охватывает отрезаемую заготовку 7 со стороны обратной направлению усили реза около упора (не локазан), выполненного в станине автомата . Противопололсчые плечи рычагов 5 через ролики 8 с по,мощью лружины 9 контактируют с копиром 4. Пружина 9 и демлфер 10 взаимодействуют с рычагами 5 механизма ограничени изгиба лрутка. Демпфер 10 может быть гидравлическим ил.и лневматичесю.м. Например, в данно.м варианте применено гидравлическое демлфирующее устройство, состо щее из цилиндра //, поршн со штоком 12, соединенного с одним из рычагоз 5, перепускного клапана 13 и имеющее дроссельные отверсти . Демлфирующее устройство подбираетс так, чтобы гасить динамические нагрузки, возникающие в механизме в результате совершени технологической олерации резки.A device for cutting lrutes into blanks contains a frame /, a driving movable rod 2, on which knife 3 and a copier 4 are fixed, as well as a bar curvature limiting mechanism, made in the form of two shoulders 5, mounted on frame 1 on a non-stationary axis 6. One shoulder each lever 5 covers the cut-off workpiece 7 from the side opposite to the direction of the cutting force near the stop (not loosened) made in the frame of the machine. The anti-half shoulders of the levers 5 through the rollers 8 with each other, by means of the spring 9, are in contact with the copier 4. The spring 9 and the demultiplier 10 interact with the levers 5 of the curvature limiting mechanism. Damper 10 may be hydraulic or pneumatic. For example, in this version, a hydraulic demounting device is used, consisting of a cylinder //, a piston with a rod 12, connected to one of the levers 5, a relief valve 13 and having throttle bores. The demoulding device is selected so as to dampen the dynamic loads that occur in the mechanism as a result of the cutting process.

Профиль копира 4 выполнен с углом подъема, который обеспечивает размыкание рычагов 5 в момент скола заготовки.The profile of the copier 4 is made with a lifting angle, which ensures the opening of the levers 5 at the time of cleavage of the workpiece.

Claims

The possibility of adjusting the copier relative to the rod 2 in the direction of movement of the knife 3 is achieved by means of groove holes made on the cop 4 and fastening bolts 14. The cutting of the tiller is carried out after the bar is fed to the stop. In this position, the arms of the levers 5, located near the stop, cover the cut part of the bar from the side, opposite to the direction of the cutting force, preventing p-root from bending. The spring 9 forces the rollers 8 of the opposing arms of the levers 5 to the copier 4. The cam lever acts to drive the mechanism to cut the stem 2 with} south 3 and the pyro 4 is in translational motion. The cut of the workpiece is carried out as a result of moving the knife 3 relative to the stationary knife (: not shown in the drawings). When the blade 3 is inserted into the rod before the workpiece 7, which corresponds to the cleavage moment, is removed from it, the rollers 8 roll around on the copy 4 of the fixed profile, and the levers 5 are in the closed position and hold the cut part of the rod 7 in the initial position, preventing its bend. At the moment of cleaving the material, the variable profile of the copier 4 runs on the rollers 5, forcing the levers 5, covering the cut-off workpiece 7, to open, releasing it. As a result, the knife 5 transfers the cut-off workpiece to the stamping position. At this moment, an additional scaling mechanism, associated with a sharp drop in technological force on the knife 3, is extinguished as a result of the resistance forces arising in the spring 9 and the damping device 10 through the copier 4, the rollers 8 and the levers 5. The resistance forces are created when flowing fluid through the orifice as a result of the piston moving with the stem 12 | In cylinder 11 when the levers 5 are opened. This ensures a reduction of dynamic loads, and a smooth operation of the mechanism and the machine as a whole. During the return stroke of the knife 3, the rollers 8, rolling on the copier 4, return the levers 5 to their initial position under the action of the spring 9. The overflow valve 13 of the damping device 10 opens, ensuring smooth movement of the levers 5 along the copier 4. The design of the device described allows for an increase. reliability of his work, as well as improve the quality of the blanks. The invention of the device for cutting rods into workpieces, comprising a frame, a drive under the movable blade with a knife, a fixed knife, and a mechanism for limiting the bending of the rod, performed in the form of spring-loaded arms with rollers -contacting with Copier, characterized in that In order to improve the quality of the workpieces, as well as increase the reliability of work, it is equipped with a damper that connects the levers of the mechanism for limiting the bending of the rod, made by two shoulders and mounted on the frame, and the copier is mounted on the drive base. izhnom shtok. The source of information taken into account during ekapertiz; 1. USSR author's certificate number 172268, cl. In 21 K 1/58, 1963.

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