CN210754919U - Die assembly for forging oblique connecting pipe - Google Patents
Die assembly for forging oblique connecting pipe Download PDFInfo
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- CN210754919U CN210754919U CN201921486611.6U CN201921486611U CN210754919U CN 210754919 U CN210754919 U CN 210754919U CN 201921486611 U CN201921486611 U CN 201921486611U CN 210754919 U CN210754919 U CN 210754919U
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Abstract
The utility model discloses a die assembly is used in scarf, die assembly comprises first membrane module and second membrane module, and first membrane module mainly used is thick and to a lopsidedness with cylindricality blank upper portion mound, and the lower part of cylindricality blank then the shaping pipe portion for the scarf to guarantee that the position of mound thick slope can together put into the second membrane module together with pipe portion, then in the second membrane module, through pressing final formation scarf. With prior art's contrast, the utility model discloses the technological effect who gains does: 1. by means of the die assembly, profiling forging is carried out, and an angle of 45 degrees is forged, so that the operation is simple and convenient; 2. the smooth completion of the metal streamline can be ensured; 3. effectively reducing the forging sectional area, ensuring that the forging is fully forged, and further shortening the heat treatment and heat preservation time after forging. 4. The turning allowance is reduced, and the processing period is shortened.
Description
Technical Field
The utility model relates to a scarf joint forges technical field, concretely relates to scarf joint forges and uses die assembly and forging method.
Background
The inclined connecting pipe can well change the flow direction of the fluid, adjust the mixing and energy exchange among the fluids, obtain ideal damping, and further influence the fluid mechanical property of the system and the integral thrust of the system. The traditional manufacturing process of the oblique connecting pipe is mainly free forging, and the specific implementation modes comprise the following three steps: 1. after the blank is drawn out, upsetting the blank into a step shaft, and then punching and cutting the step shaft; 2. after the blank is drawn out, upsetting the blank into an eccentric shaft, and then punching and cutting the eccentric shaft; 3. and performing combined forging on the two parts, namely drawing the blank, upsetting the blank into a step shaft, punching, sawing a 45-degree inclined plane, and then cutting. The above method has the following defects: the machining allowance is large, the forging sectional area is large, the full forging is not facilitated, and the machining period is long.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a die assembly for the inclined connecting pipe forging and a forging method of the inclined connecting pipe.
The utility model discloses the technical scheme who adopts does: a die assembly for the forging of a mitre pipe, comprising:
a first assembly including a first forming die and a first upper platen; the top of the first forming die is provided with an inclined plane, the inclined plane is formed by cutting a plane forming an included angle of 45 degrees with the horizontal plane, and a vertical hole for forming a pipe part of the inclined connection pipe is formed in the inclined plane at the top of the first forming die; the first upper pressing plate is used for extruding a blank from the upper part;
the second assembly comprises a second forming module and a second upper pressing plate which are detachable; the top end face of the second forming module is a horizontal plane and is provided with a hole, the shape and the size of the hole are matched with those of a preformed oblique connecting pipe, and the part of the hole, which is matched with the oblique surface of the oblique connecting pipe, is positioned above the hole and is in the vertical direction; the second upper pressing plate is used for extruding the blank from the upper part, the bottom of the second upper pressing plate is a horizontal plane, and the peripheral size of the second upper pressing plate is larger than or equal to the diameter of the top of the hole.
Before the first upper pressing plate begins to extrude the blank, the top of the blank is positioned in the notch, the blank close to the highest point of the through hole is abutted to the slope, the notch is combined with the slope, a certain guiding effect is realized on the cylindrical blank during pressing, the blank is pressed, the top of the blank is influenced by the slope, and the top of the blank is pressed to be thickened and deviates towards the lowest end of the vertical hole of the first forming die.
Further, the second molding module comprises a first movable mold, a second movable mold and a fixed mold which are sequentially arranged from top to bottom; a through hole in the vertical direction is formed in the first movable die, a through inclined hole with the axis forming an angle of 45 degrees with the horizontal direction is formed in the second movable die, a concave hole is formed in the top of the fixed die, and the through hole in the first movable die, the inclined hole in the second movable die and the concave hole in the fixed die are enclosed to form the through hole; and the first movable die is taken down, and then the second movable die is horizontally pushed rightwards, so that the formed inclined connecting pipe can be ejected out.
A method of forging a die assembly for forging a mitre pipe as described above, comprising the steps of:
step 1: firstly, upsetting and drawing a blank, forging the blank into a cylindrical blank matched with the diameter of the vertical hole, and then cutting off the top and bottom excess materials for later use;
step 2: inserting the cylindrical blank with the excess materials cut off in the step 1 into the vertical hole, then buckling a notch at the bottom of the first upper pressing plate at the top of the cylindrical blank, and enabling the blank at the top of the cylindrical blank, which is close to the highest point of the through hole, to be abutted against the slope;
and step 3: pressing the first upper pressing plate downwards to ensure that the blank does not cross the hole transversely when the pressed blank is loaded into the hole formed in the top of the second forming die;
and 4, step 4: putting the blank pressed in the step 3 into the hole, and then pressing the second upper pressing plate downwards until the bottom of the second upper pressing plate is contacted with the top of the second forming die; and then taking out the blank and machining a hole to obtain the oblique connecting pipe.
With prior art's contrast, the utility model discloses the technological effect who gains does: 1. by means of the die assembly, profiling forging is carried out, and an angle of 45 degrees is forged, so that the operation is simple and convenient; 2. the smooth completion of the metal streamline can be ensured; 3. effectively reducing the forging sectional area, ensuring that the forging is fully forged, and further shortening the heat treatment and heat preservation time after forging. 4. The turning allowance is reduced, and the processing period is shortened.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural view of a squib.
Fig. 2 is a schematic structural diagram (bottom view) of the first upper platen in the embodiment of the present invention.
Fig. 3 is a sectional view taken along a-a in fig. 2.
Fig. 4 is a schematic structural diagram (top view) of a first forming die in an embodiment of the present invention.
FIG. 5 is a sectional view taken along the line B-B in FIG. 4
Fig. 6 is a schematic structural diagram of a first molding module according to an embodiment of the present invention.
Fig. 7 is a schematic view of the press forming of the oblique connecting pipe in the embodiment of the present invention.
In the figure: the blank forming die comprises a pipe portion 1-1, an inclined surface portion 1-2, a first forming die 2-1, a first upper pressing plate 2-2-1, a notch 2-2-2, a slope 2-3, a vertical hole 3-1-1, a first movable die 3-1-2, a second movable die 3-1-3, a fixed die 3-2, a second upper pressing plate 3-3, and a blank 4.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Referring to fig. 1 to 6, a die assembly for mitre pipe forging includes a first assembly and a second assembly, wherein the first assembly includes a first forming die 2-1 and a first upper platen 2-2. The top of the first forming die 2-1 is provided with an inclined plane, the inclined plane is formed by cutting a plane forming an included angle of 45 degrees with the horizontal plane, and the inclined plane at the top of the first forming die is provided with a vertical hole 2-3 for forming the inclined connecting pipe part 1-1. The first upper press plate 2-2 is used to press the billet 4 from above.
The bottom of the first upper pressing plate 2-2 is provided with a notch 2-2-1, the inner side wall of one side of the notch is a slope 2-2-2, and an included angle α between the slope 2-2-2 and the top wall of the notch is an obtuse angle, before the first upper pressing plate 2-2 begins to extrude a blank 4, the top of the blank is positioned in the notch, the blank close to the highest point of the through hole is abutted against the slope 2-2-2, and the slope and the top wall of the notch are further in arc transition.
The second assembly comprises a second removable molding die set and a second upper platen 3-2. The top end face of the second forming module is a horizontal plane and is provided with a hole 3-3, the shape and the size of the hole 3-3 are both adapted to the preformed oblique connection pipe 1, and the part of the hole 3-3 adapted to the oblique part 1-2 of the oblique connection pipe is positioned above and in the vertical direction; the second upper pressing plate 3-2 is used for extruding blanks from the upper part, the bottom of the second upper pressing plate 3-2 is a horizontal plane, and the peripheral size of the second upper pressing plate is larger than or equal to the diameter of the top of the hole.
The second forming module comprises a first movable mould 3-1-1, a second movable mould 3-1-2 and a fixed mould 3-1-3 which are sequentially arranged from top to bottom; a through hole in the vertical direction is formed in the first movable die 3-1-1, a through inclined hole with the axis forming an angle of 45 degrees with the horizontal direction is formed in the second movable die 3-1-2, a concave hole is formed in the top of the fixed die 3-1-3, and the through hole in the first movable die, the inclined hole in the second movable die and the concave hole in the fixed die jointly form the hole 3-3; the first movable die 3-1-1 is taken down, and then the second movable die 3-1-2 is horizontally pushed rightwards, so that the formed inclined connecting pipe can be ejected out. If the inclined plane part and the pipe part of the inclined connecting pipe are in arc transition, an arc chamfer can be further arranged at the edge of the top of the vertical hole 2-3 arranged in the first forming die 2-1, and an arc transition is arranged at the top of the through inclined hole and used for forming a transition arc of the inclined plane part and the pipe part of the inclined connecting pipe.
The method for forging the inclined connecting pipe by adopting the die assembly for forging the inclined connecting pipe comprises the following steps:
step 1: firstly, upsetting and drawing a blank, forging the blank into a cylindrical blank 4 matched with the diameter of the vertical hole, and then cutting off the top and bottom excess materials for later use;
step 2: inserting the cylindrical blank 4 with the excess materials cut off in the step 1 into the vertical hole, then buckling a notch at the bottom of the first upper pressing plate at the top of the cylindrical blank, and enabling the blank at the top of the cylindrical blank, which is close to the highest point of the through hole, to be abutted against the slope;
and step 3: as shown in fig. 7 (a), an arrow indicates the direction of the force applied to the first upper platen. Pressing the first upper pressing plate 2-2 downwards to ensure that the blank 4 does not cross the hole transversely when the pressed blank is loaded into the hole formed in the top of the second forming die;
and 4, step 4: as shown in fig. 7 (b), an arrow indicates the direction of the force applied to the second upper platen. Putting the blank pressed in the step 3 into the hole, and then pressing the second upper pressing plate downwards until the bottom of the second upper pressing plate is contacted with the top of the second forming die; and then taking out the blank and machining a hole to obtain the oblique connecting pipe.
The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.
Claims (3)
1. The utility model provides a die assembly for the forging of scarf, which is characterized in that: the method comprises the following steps:
a first assembly comprising a first forming die (2-1) and a first upper platen (2-2); the top of the first forming die (2-1) is provided with an inclined plane, the inclined plane is formed by cutting a plane forming an included angle of 45 degrees with the horizontal plane, and a vertical hole (2-3) used for forming the inclined connecting pipe part (1-1) is formed in the inclined plane at the top of the first forming die (2-1); the first upper pressing plate (2-2) is used for extruding a blank (4) from the upper part;
a second assembly comprising a second removable forming die set and a second upper platen (3-2); the end face of the top of the second forming die set is a horizontal plane and is provided with a hole (3-3), the shape and the size of the hole (3-3) are matched with those of a preformed oblique connecting pipe (1), and the part of the hole (3-3) matched with the oblique part (1-2) of the oblique connecting pipe is positioned above and in the vertical direction; the second upper pressing plate (3-2) is used for extruding the blank from the upper part, the bottom of the second upper pressing plate (3-2) is a horizontal plane, and the peripheral size of the second upper pressing plate is larger than or equal to the diameter of the top of the hole.
2. The die assembly for forging the oblique connecting pipe according to claim 1, wherein a notch (2-2-1) is formed in the bottom of the first upper pressing plate (2-2), the inner side wall of one side of the notch is a slope surface (2-2-2), an included angle α between the slope surface (2-2-2) and the top wall of the notch is an obtuse angle, the top of the billet is located in the notch before the first upper pressing plate (2-2) begins to extrude the billet (4), and the billet close to the highest point of the through hole is in contact with the slope surface (2-2-2).
3. The die assembly for the forging of a mitre pipe according to claim 1, wherein: the second forming module comprises a first moving die (3-1-1), a second moving die (3-1-2) and a fixed die (3-1-3) which are sequentially arranged from top to bottom; a through hole in the vertical direction is formed in the first movable die (3-1-1), a through inclined hole with the axis forming an angle of 45 degrees with the horizontal direction is formed in the second movable die (3-1-2), a concave hole is formed in the top of the fixed die (3-1-3), and the through hole in the first movable die, the inclined hole in the second movable die and the concave hole in the fixed die jointly form the hole (3-3); the first movable die (3-1-1) is taken down, and then when the second movable die (3-1-2) is horizontally pushed rightwards, the formed inclined connecting pipe can be ejected out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921486611.6U CN210754919U (en) | 2019-09-06 | 2019-09-06 | Die assembly for forging oblique connecting pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921486611.6U CN210754919U (en) | 2019-09-06 | 2019-09-06 | Die assembly for forging oblique connecting pipe |
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| CN210754919U true CN210754919U (en) | 2020-06-16 |
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| CN201921486611.6U Active CN210754919U (en) | 2019-09-06 | 2019-09-06 | Die assembly for forging oblique connecting pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586831A (en) * | 2019-09-06 | 2019-12-20 | 江苏圣贤锻造有限责任公司 | Die assembly for forging oblique connecting pipe and forging method |
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2019
- 2019-09-06 CN CN201921486611.6U patent/CN210754919U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586831A (en) * | 2019-09-06 | 2019-12-20 | 江苏圣贤锻造有限责任公司 | Die assembly for forging oblique connecting pipe and forging method |
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