SU1311864A1 - Cutting die - Google Patents

Abstract

The invention relates to the processing of metals by pressure, namely the separation of pipes into blanks. The aim of the invention is to increase the productivity by simultaneously obtaining two shaped ends of the same shape on the cut pipes when joining them for welding. When the upper part of the die is moved downward, parts of the semi-matrix clamp the pipe, and the cutting knife performs cutting; pipes along a curved contour. Two blanks are formed — pipes with ends ready for perpendicular joining with another tubular element. 5 il.

Description

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The invention relates to the processing of metals by pressure, in particular, it is used for cutting pipes into blanks.

The purpose of the invention is to obtain, at the same time, two shaped ends of the same configuration for joining them for welding with other tubular elements.

The figure shows a stamp, front view; figure 2 is the same, top view; fig.Z - the same, side view; in FIG. 4, the ends of the blanks obtained by a cutting knife; FIG. 3 is a schematic of the joint obtained in cutting the pipe of the ends of the door with another tubular element.

The stamp consists of the top plate 1, on which the knife 2 and the wedge 3 are placed, the knife 2 is fixed on the plate 1 by means of a punch holder 4. On the bottom plate 5 there are semi-matrix 6 and 7 with fastening clips 8 and 9. The semi-matrix 6 consists of two parts : mobile and motionless, which are fastened with clips. The semi-matrix 7 also consists of two parts, which are fastened with clips. The movable parts of the semi-matrix 6 and 7 are fastened together with the possibility of movement in the direction perpendicular to the axis of the pipe being cut 10, the fixed parts of the semi-matrix 6 and 7 are fastened together and fixed at a low position

For perpendicular docking of the obtained blanks with the ends 12 and 13 with the tubular element 14, the blank with

plate 5. To expand the movable parts of semi-matrix 6 and 7 in one of the clips 35, end 13, obtained from the outer side of the 8 or 9, is installed with a sleeve 11, the pipe 2 of the knife 2 is applied to the surface

of the tubular element 14, and the workpiece with the end face 12, obtained from the inner side of the cutting knife 2, is rotated by 90 relative to the position of the workpiece in the die after cutting. At the same time between the surface of the tubular element 14 and the ends 12 and 13 of the workpiece is formed with gaps. The presence of gaps due to different radii of the arcs describing the inner and outer surface of the cutting knife 2 does not significantly affect the quality of the ferrous metal welding, and with increased requirements on the quality of welding, for example, when welding elements stainless steel can

The stamp works in the following way, During the course of the upper parts of the stamp

down part of the moving semi-matrix 6 and

7 along with the clips fastening them

8 and 9 under the action of the wedge 3 are moved in the direction perpendicular to the axis of the pipe being cut 10, previously installed in the die,

and clamp the pipe 10, and the knife 2 cuts the pipe 10 along a curvilinear contour into workpieces with the ends 12 and 13. The cutting inner and outer surfaces of the knife are cypindrical. the knife is made in the form of a cylindrical half sleeve. With

perform additional stripping

Thereby, the radius defining the inner surface of the knife is 0.55–0.65 dippers 12 and 13 of the workpiece. Thus, the size of the pipe being cut, and the radius, at once noBbnnaetcH capacity, determines the outer side of the knife, the formula of the invention is made depending on the thickness of the cut-off die, mainly for the cut knife, while the working surface of the cutting pipes for packing

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five

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0

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The half of the semi-matrix located on the inner side of the cutting knife is made in accordance with the configuration of the inner surface of the knife, and the working surface of the semi-matrix located on the outer side of the knife is completed in accordance with the configuration of the external surface of the knife. Making the knife in the form of a half sleeve allows to get two ends, cut along an arc or close to it, in one stroke of the press, and if you set the inside radius of the knife to be less than 0.55 of the diameter of the pipe being cut, the end obtained from the inside of the radius cutter for welding, there will be a relatively large gap along the pipe axis, if the inner radius of the knife is greater than 0.65 of the diameter of the pipe being cut, the rim is obtained from the outside of the radius knife. When joining for welding, there will be relatively large gaps along the edges of the end face.

During the course of the upper parts of the stamp, the spring 1 pushes apart the parts of the semi-matrix 6 and 7, driving them to their original position. Next, the workpiece is removed and the feed is new. After that, the duty cycle is repeated.

For perpendicular docking of the obtained blanks with the ends 12 and 13 with the tubular element 14, the blank with

5, end 13, obtained from the outside of the knife 2, is applied to the surface

end 13, obtained from the external side of the knife 2, is applied to the surface

of the tubular element 14, and the workpiece with the end face 12, obtained from the inner side of the cutting knife 2, is rotated by 90 relative to the position of the workpiece in the die after cutting. In this case, gaps are formed between the surface of the tubular element 14 and the ends of the blanks 12 and 13. The presence of gaps due to different radii of the arcs describing the inner and outer surfaces of the cutting knife 2 does not significantly affect the quality of the ferrous metal welding, and with increased requirements on the quality of welding, for example, stainless steel cops can

perform additional stripping

ends 12 and 13 of the workpiece. Thus, noBbnnaetcH performance, the formula of the invention The cutting stamp is mainly used for cutting pipes for reworking under subsequent 313

spud welding comprising an upper movable plate with a wedge installed on it and a knife-shaped cutting tool made with a curvilinear cutting edge 5 the lower plate with semi-matrix 5 has a cavity for placing and clamping the pipe, one of which is fixed relative to the lower plate and the other with possibility of movement relative to a fixed semi-matrix, tl d 180 /, 4

and with the fact that, in order to increase productivity by simultaneously obtaining two shaped ends of the same configuration for

5 docking them for welding with others

tubular elements, on the side of the knife opposite the cutting edge, an additional curvilinear re.jup is made, and the edge is equidistant

TH main, while the knife is complete in the form of a cylindrical semi-sleeve.

Phage /

Fig.Z

fig a

 Editor S.Patrusheva

Compiled by M. Tarlavska

Tehred M. Khodanich Proofreader M; Sharoshi

Order 1919/12 Circulation 976 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing plant, Uzhgorod, st. Projectra, 4

Claims (1)

Claim Cutting die mainly for cutting pipes into workpieces under the subsequent pre-supply of the workpiece in cutting. In this case, between the tubular element 14 and 13, the workpieces form the Gaps resulting in 13118 welding, containing the upper movable plate with a wedge mounted on it and a cutting tool in the form of a knife, made with a curved cutting edge, the lower plate with half-matrices having a cavity for accommodating and clamping the pipe , one of which is mounted motionless relative to the bottom plate, and the other with the ability to move the io-carrier ι: but the stationary half-matrix, with the exception of the fact that, in order to increase the productivity of put We receive at the same time two shaped ends of the same configuration for 5 joining them for welding with other tubular elements, on the side of the knife opposite the cutting edge, an additional curved cutting edge is made, which is equidistant to the main one, while the knife is made in the form of a cylindrical half-sleeve. Figure 1 FIG. 3