SU858978A2

SU858978A2 - Tool for pressure working of metals

Info

Publication number: SU858978A2
Application number: SU792818885A
Authority: SU
Inventors: Сергей Дмитриевич Жовтобрюх
Original assignee: Украинский Государственный Проектно-Технологический И Экспериментальный Институт "Укроргстанкинпром"
Priority date: 1979-09-07
Filing date: 1979-09-07
Publication date: 1981-08-30

Description

(54) ИНСТРУМЕНТ ДЛЯ ОБРАБОТКИ МЕТАЛЛОВ ДАВЛЕНИЕМ(54) TOOL FOR HANDLING METALS BY PRESSURE

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Изобретение относитс к обработке металлов давлением и может быть использовано дл резки заготовок из профилированного проката в заготовительном производстве машиностроительной промышленности.The invention relates to the processing of metals by pressure and can be used for cutting blanks from profiled steel in the blank production of the engineering industry.

По основному авт. св. № 747576 известен инструмент дл обработки металлов давлением , преимущественно дл резки, содержащий пр моугольную раму, одна сторона которой установлена с возможностью перемещени , размещенные внутрн нее вкладыши с поперечным сечением в виде пр моугольных треугольников с катетами, взаимодействующими между собой, и упругие элементы, пр.ичем вершины треугольников выполнены срезанными и взаимодействующими с упругими элементами 1.According to the main author. St. No. 747576 is a tool for metal forming, mainly for cutting, containing a rectangular frame, one side of which is mounted for movement, inner liners with a cross section in the form of rectangular triangles with legs and interacting with each other, and elastic elements . And the vertices of the triangles are cut and interacting with elastic elements 1.

Недостатками данной конструкции вл ютс невысокое качество получаемых заготовок и больщое по величине усилие реза, что имеет место за счет того, что рез происходит по диагонали сечени заготовки .The disadvantages of this design are the low quality of the workpieces and the large cutting force, which is due to the fact that the cut occurs along the diagonal of the section of the workpiece.

Цель изобретени - повышение качества получаемых заготовок и снижение усили реза.The purpose of the invention is to improve the quality of the workpieces and reduce the cutting force.

Указанна цель достигаетс тем, что в инструменте дл обработки металлов давлением , содержащем пр моугольную раму, одна сторона которой установлена с возможностью перемещени , размещенныеThis goal is achieved by the fact that in a metalworking tool with a press containing a rectangular frame, one side of which is movably mounted,

5 внутри нее вкладыши с поперечным сечением в виде пр моугольных треугольников с катетами , взаимодействующих между собой, и упругие элементы, причем вершины треугольников выполнены срезанными и взаимодействующими с упругими элементами,5 inside it, liners with a cross section in the form of right-angled triangles with legs, interacting with each other, and elastic elements, with the tops of the triangles made cut and interacting with elastic elements,

10 катеты отрезных вкладышей смещены относительно катетов зажимных вкладышей на угол 3-5°.10 legs of the detachable liners are offset relative to the legs of the clamping liners at an angle of 3-5 °.

На фиг. 1 показан инструмент, общий вид, в разрезе; на фиг. 2 - щтамп, общий вид, в котором может быть установлен струмент; на фиг. 3 - сечение А-А наFIG. 1 shows a tool, a general view, in section; in fig. 2 - chip, general view, in which the structure can be installed; in fig. 3 - section AA

фиг. 2; на фнг. 4 - сечение Б-Б на фиг. 2.FIG. 2; on fng. 4 is a section BB in FIG. 2

Инструмент содержит пр моугольнуюThe tool contains a rectangular

раму 1 и размещенные в ее углах упругиеframe 1 and placed in its corners elastic

элементы 2 и внутри нее вкладыши 3-6elements 2 and inside the liners 3-6

Claims

With a cross section in the form of right triangles. Side 7 of the frame is mounted to move under the action of the press ram. 38 Triangles interact with each other with their legs, and their hypotenuse contact with the frame. The vertices of the triangles are cut and interacting with elastic elements.

2. The angles L and f between the legs and the hypotenuse of the clamping liners are taken at 30 ° and 60 °, and between the legs and the hypotenuse of the cutting inserts, respectively, 30-ЗЗ - 5 ° and 60-1 + 3 - 5 °. It follows that the legs of the cutting liners are offset relative to the legs of the clamping liners by an angle of 3-5 °. In this case, the cutting force is equal to Щ F - the cross-sectional area of the cut blank; oi 3 - 5 ° - the angle between the legs of the cutting and clamping inserts 6g .- temporary resistance to rupture. The angle J-in the received limit is the angle of self-braking, which allows for a high-quality clamping of the workpiece at the moment of cutting. The stamp in which the tool is installed contains a fixed 8 and a movable 9 plates, a differential clamping mechanism, clamping and cutting units. The differentiated clamping mechanism is made in the form of a pint 10 with a binder 11 that are interconnected along a cylindrical surface. The clamping and cutting units are made in the form of identical tools (Figs. 3 and 4) with cutting-off 3-6 and clamping 12-15 inserts forming a closed loop of the cut-off workpiece 16. Buffer 17 is mounted between plate 9 and clamping insert 12 position. The stamp works as follows. Under the effective force of the press, the plate 9 moves the cutting insert 3 and, through the buffer 17, the clamping insert 12. Since the force PI acts at an angle of 30 ° and PI - 60 °, the cutting insert 3 moves 8 along the inclined plane of the insert 6, thereby moving along frame 1, the liner 4. Under the action of the liner 4 in step 10, the liner 5 moves, which in turn through the liner 6 moves along the plate 9 cut-off liner 3, reducing the contour formed by the liners and clamping the workpiece 16. As the force P increases, it becomes the cutting force, insert 3 through the breech 16, the insert 5 and 10 of this 10 transmits this force to the inserts 14 and 12, overcoming the resistance of the buffer 17 and turns the 10 of it relative to its base. The inserts 4-6 are displaced relative to the inserts 12-15 and the rolling cut is carried out. At the end of the cut, the buffer 17 returns the inserts to the initial position. The liners 12 and 14 move downwards, turn point 10 to the equilibrium position, and the spot in turn moves the liners 3 and 5. Due to the presence of elastic elements 2, the liners move in frame 1, increasing the contour they form and release the workpiece 16. Tool The proposed construction allows improving the quality of the obtained blanks and reducing the cutting force. Claims Instrument for metal forming according to ed. St. No. 747576, characterized in that, in order to improve the quality of the workpieces and reduce the cutting force, the legs of the detachable liners are shifted relative to the legs of the clamping liners by an angle of 3 to 5 °. cl. B 21 D 22/02; B 23 D 35/00: B 23 D 23/00; B 26 D 1/04, 1977.

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