CN113275460B - Rib mould in upset blank with horizontal interior muscle barrel work piece - Google Patents
Rib mould in upset blank with horizontal interior muscle barrel work piece Download PDFInfo
- Publication number
- CN113275460B CN113275460B CN202110382311.9A CN202110382311A CN113275460B CN 113275460 B CN113275460 B CN 113275460B CN 202110382311 A CN202110382311 A CN 202110382311A CN 113275460 B CN113275460 B CN 113275460B
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- Prior art keywords
- die
- male die
- ring
- male
- rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 210000003205 muscle Anatomy 0.000 title description 2
- 230000007306 turnover Effects 0.000 claims abstract description 31
- 238000007723 die pressing method Methods 0.000 claims abstract description 21
- 238000001125 extrusion Methods 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 8
- 210000001015 abdomen Anatomy 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 8
- 238000005266 casting Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
- B21D19/10—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws working inwardly
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/02—Making hollow objects characterised by the structure of the objects
- B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to a turnover blank inner rib die with a transverse inner rib barrel workpiece, which comprises a male die, a female die and a lower ejector rod; the device is characterized in that the male die comprises a male die straightening ring, a male die pressing plate, a connecting rod mechanism, a spring, a pressing rod, a limiting pipe and a pressing ring; the male die pressing plate is fixedly connected to the lower end of the pressing rod, the male die correcting ring is sleeved on the pressing rod, and the connecting rod mechanism is respectively connected with the male die correcting ring sleeve and the male die pressing plate; the spring is arranged in the limiting pipe, is sleeved on the pressure rod between the male die pressing plate and the male die straightening ring together, and is fixed on the male die pressing plate through the pressure ring; the female die comprises an inner turning female die, an inner turning female die supporting ring and a lower die plate; the turning female die is connected with an inner turning female die supporting ring, and the inner turning female die supporting ring is fixed on the lower die plate; the invention solves the problem that the cylindrical part with a large belly and a small mouth is difficult to demould when being extruded, reduces the shearing stress during overturning, prevents the material from being broken during overturning and improves the quality of the outer surface of the extrusion cylinder body.
Description
Technical Field
The invention belongs to an extrusion method for forming a metal material zero workpiece, and particularly relates to an overturning blank inner rib die with a transverse blank inner rib cylinder workpiece.
Background
At present, for a cylinder workpiece with a transverse inner rib at the end, such as the manufacture of a certain type of large pressure container (see figure 1), the structural characteristics of the workpiece are as follows: firstly, the cylinder body is thin-walled (10 mm), the end part is thick-walled (width 100, thickness 100), the whole thickness is different, and the cylinder body cannot be formed by stretching a plate material; secondly, only a thick-wall cylinder with the same inner diameter (110) as the end part can be formed by an extrusion method, and the material waste is large.
As shown in FIG. 1, a workpiece 1 with a transverse inner rib cylinder is formed by a conventional forming process which mostly adopts a machining method after extrusion, a casting method and a welding method after stamping. Or the rod stock is put on a lathe to be machined into the required cylindrical workpiece by using the traditional machining method. The method has the advantages of material utilization rate of less than 20 percent, low machining performance and incapability of meeting the high-strength requirement of the pressure container. At present, the traditional forming process is most commonly adopted for the cylinder workpiece with the transverse inner rib 1-1 at the end part as follows:
1. the casting is formed by adopting the traditional casting, and the casting has a plurality of defects, such as air holes, sand holes and the like, and the porosity causes low yield, large crystal grains and low mechanical property, so that the high mechanical property requirement is difficult to meet.
2. Firstly, a stamping method is adopted to process a workpiece in sections, the transverse rib part 1-1 is extruded and then machined, the straight wall part of the cylinder workpiece is stretched and formed by a thin plate, and then the straight wall part is welded with the transverse rib, but the process flow is more, the welding seam strength is low, and the requirement of high mechanical property of a large pressure container is difficult to meet.
3. Firstly, extruding and forming a cylindrical workpiece, upsetting a bar, reversely extruding the bar into a cylindrical part with the wall thickness of 110, and then machining; the extrusion cylinder has large wall thickness, large machining allowance, high machining cost, time and labor waste and low material utilization rate.
In a word, for the manufacturing of the cylinder workpiece with the transverse inner rib at the end part, the problems of low material utilization rate, low annular rib strength, long machining period and high cost existing in the traditional process are adopted. The key point is that the cylindrical part with a small belly is extruded, and a die easy to demould is not arranged.
Disclosure of Invention
The invention aims to realize the forming of a cylinder workpiece with a transverse inner rib at the end part, and provides a turnover blank inner rib die of the cylinder workpiece with the transverse inner rib, which can turn over the inner rib, can be opened and contracted and is easy to demould.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a turnover blank inner rib die with a transverse inner rib barrel workpiece comprises a male die, a female die and a lower ejector rod; the female die comprises an inner overturning female die, an inner overturning female die supporting ring and a lower die plate; the inner overturning female die is connected on an inner overturning female die supporting ring, and the inner overturning female die supporting ring is fixed on the lower die plate; the inner overturning female die orifice is provided with an arc; the lower ejector rod is arranged in a middle hole of the lower template; the method is characterized in that: the male die comprises a male die straightening ring, a male die pressing plate, a turnover connecting rod mechanism, a spring, a pressing rod, a limiting pipe and a pressing ring; the male die pressing plate is fixedly connected to the lower end of the pressing rod; the convex die straightening ring is sleeved on the pressure rod; the turnover connecting rod mechanism is respectively connected with the lower end of the convex die straightening ring and the convex die pressing plate; the springs are arranged in the limiting pipes, are sleeved on the pressure rod between the male die pressing plate and the male die straightening ring together, and are fixed on the male die pressing plate through the pressure ring; wherein: the connecting rod turnover mechanism is distributed in the circle of the pressing rod and is provided with a connecting rod inner supporting block, and a grooving barrel workpiece is placed into the extrusion die when the connecting rod turnover mechanism works; the downward bottom of the male die is contacted with the bottom of the grooving barrel workpiece, the spring of the die is compressed, and the inner supporting block of the connecting rod rotates to be horizontal and supports the inner wall of the barrel workpiece.
Compared with the prior art, the invention has the technical characteristics and effects that:
the invention solves the problem that the cylindrical part with a large belly and a small mouth is difficult to demould by extruding, and the connecting rod turnover mechanism enables the male die to be opened and contracted in the working process, thereby being easy to demould. The die opening is designed into a large circular arc-shaped fillet so as to form a rotating space on the barrel workpiece after backward extrusion and form a controllable size and shape. Meanwhile, the shearing stress of the blank at the upper end of the backward extrusion cylinder workpiece during the overturning of the inner rib is reduced, so that the material is prevented from being broken during the overturning, and the quality of the outer surface of the blank at the upper end of the backward extrusion cylinder workpiece at the outer surface of the inner rib can be improved after the overturning.
Drawings
FIG. 1 is a schematic view of a barrel workpiece with transverse inner ribs;
FIG. 2 is a schematic view of a barrel workpiece with internal ribs of the blank after being back extruded;
FIG. 3 is a schematic view of a rollover blank inner rib mold with a transverse inner rib cylinder workpiece according to the present invention;
FIG. 4 is a schematic view of the spring compression and rotation of the inner brace of the inverted blank inner rib mold;
FIG. 5 is a schematic diagram of upward movement of a male die of a die for turning an inner rib of a blank, spring recovery, rotation and retraction of an inner support block, and ejection of a push rod out of a cylinder workpiece;
in the figure: the device comprises a cylinder workpiece 1, a transverse rib part 1-1, a blank inner rib 2-1 and a cutting groove 2-2 below the blank inner rib part;
turning over the blank inner rib die: a male die 4-1, a female die 4-2 and a mandril 4-4; 4-1-1 part of a male die straightening ring, 4-1-2 parts of a male die pressing plate, 4-1-3 parts of a connecting rod turnover mechanism, 4-1-4 parts of a spring, 4-1-5 parts of a pressure rod, 4-1-6 parts of a limiting pipe and 4-1-7 parts of a pressure ring; the die comprises an inner overturning female die 4-2-1, an inner overturning female die support ring 4-2-2, a lower template 4-2-3, an arc 4-2-1-1 and a connecting rod inner support block 4-1-3-1.
Detailed Description
The technical solution and the embodiments of the present invention are explained in detail below.
FIG. 2 is a schematic view of a barrel workpiece with blank inner ribs after being backward extruded; and (3) grooving the cylindrical workpiece with the blank inner rib, namely grooving 2-2 (grooving is 3 multiplied by 45 degrees) below the blank inner rib part on a common lathe to finish grooving the cylindrical workpiece.
And the grooving barrel workpiece is used as a blank of the turnover blank inner rib die.
As shown in FIG. 3, the turnover blank inner rib die with the transverse inner rib cylinder workpiece comprises a male die 4-1, a female die 4-2 and a mandril 4-4; the male die 4-1 comprises a male die straightening ring 4-1-1, a male die pressing plate 4-1-2, a connecting rod turnover mechanism 4-1-3, a spring 4-1-4, a pressure rod 4-1-5, a limiting pipe 4-1-6 and a pressure ring 4-1-7; the male die pressing plate is fixedly connected to the lower end of the pressing rod; the convex die straightening ring is sleeved on the pressure rod; the connecting rod turnover mechanism is respectively connected with the convex die correction ring sleeve and the convex die pressing plate; the springs are arranged in the limiting pipes, are sleeved on the pressure rod between the male die pressing plate and the male die straightening ring together, and are fixed on the male die pressing plate through the pressure rings 4-1-7;
the female die 4-2 comprises an inner overturning female die 4-2-1, an inner overturning female die support ring 4-2-2 and a lower die plate 4-2-3; the turnover female die is connected with the inner turnover female die supporting ring, and the inner turnover female die supporting ring is fixed on the lower die plate; the ejector rod is arranged in the middle hole of the lower template.
As shown in figure 4, the connecting rod turnover mechanism 4-1-3 is distributed on the 4-1-5 circles of the pressure lever, is provided with a connecting rod inner supporting block 4-1-3-1, and can be 3-8 blocks, so as to ensure that the lower wall of the cylinder body workpiece does not bend and deform unstably after the cutting groove of the cylinder body workpiece is cut in the turnover process.
The cylinder workpiece is a cylinder with a small opening, the traditional structure male die is difficult to demold, and the connecting rod turnover mechanism is used to enable the male die to be opened and contracted in the working process, so that the demolding is easy.
The inner turnover female die orifice is provided with an arc 4-2-1-1.
The inner rib part of the blank is turned over for backward extrusion of the cylinder workpiece, and the opening of the turning extrusion female die is designed into a large arc-shaped fillet, so that a rotating space is formed on the backward extrusion cylinder workpiece, and controllable size and shape are formed.
Meanwhile, the shearing stress of the upper end blank of the backward extrusion cylinder workpiece during the turnover of the inner rib is reduced, so that the material is prevented from being broken during the turnover, and the quality of the outer surface of the upper end blank of the backward extrusion cylinder workpiece at the inner rib after the turnover can be improved.
As shown in fig. 5, the drawing shows that the male die of the die for turning the inner rib of the blank moves upwards, the spring is restored, the inner supporting block rotates and retracts, and the ejector rod ejects the cylinder workpiece.
The use of the turnover blank inner rib die with the transverse inner rib barrel workpiece, the blank inner rib turnover process of the grooving barrel workpiece is as follows:
a. and preparing the finished grooving barrel workpiece, and using the workpiece as a blank of the turnover blank inner rib die.
b. Putting the groove cutting cylinder workpiece into an extrusion die; the downward bottom of the male die is contacted with the bottom of the grooving barrel workpiece, a spring of the die is compressed, and the inner support block of the connecting rod rotates to be horizontal and supports the inner wall of the barrel workpiece; as shown in fig. 4.
c. The limiting ring contacts the correcting ring, the inner supporting block of the connecting rod rotates horizontally, and the connecting rod continues to move downwards to drive the grooving barrel workpiece to move downwards integrally.
d. The inner rib of the blank on the grooving barrel workpiece is turned over when meeting the edge of the female die, and the inclination direction of the inner rib of the blank is changed into a vertical direction and is consistent with the barrel wall.
e. And (3) enabling the male die to ascend, recovering the spring, rotationally recovering the connecting rod inner supporting block, withdrawing the male die from the grooving barrel workpiece, and completing demoulding, as shown in fig. 5.
f. The lower ejector rod upwards ejects the straightened and righted grooving cylinder workpiece, so that the cylinder workpiece with the transverse inner rib is manufactured.
And finally, processing and forming the cylinder workpiece with the transverse inner ribs, wherein the cylinder workpiece with the transverse inner ribs is provided with a processing allowance of a folding seam area, and the allowance is turned off, so that the complete cylinder workpiece with the transverse inner ribs is formed. The machining allowance depends on the inner rib and the thickness of the product, and is generally about 2-3 mm.
Claims (1)
1. A turnover blank inner rib die with a transverse inner rib barrel workpiece comprises a male die (4-1), a female die (4-2) and a lower ejector rod (4-4); the female die comprises an inner overturning female die, an inner overturning female die supporting ring and a lower die plate; the inner overturning female die is connected to an inner overturning female die supporting ring, and the inner overturning female die supporting ring is fixed on the lower template; the inner overturning female die orifice is provided with an arc (4-2-1-1); the lower ejector rod is arranged in a middle hole of the lower template; the method is characterized in that: the male die comprises a male die straightening ring (4-1-1), a male die pressing plate (4-1-2), a connecting rod turnover mechanism (4-1-3), a spring (4-1-4), a pressing rod (4-1-5), a limiting pipe (4-1-6) and a pressing ring (4-1-7); the male die pressing plate is fixedly connected to the lower end of the pressing rod; the convex die straightening ring is sleeved on the pressure rod; the connecting rod turnover mechanism is respectively connected with the lower end of the male die straightening ring and the male die pressing plate; the springs are arranged in the limiting pipes, are sleeved on the pressure rod between the male die pressing plate and the male die straightening ring together, and are fixed on the male die pressing plate through the pressure ring; wherein: the connecting rod turnover mechanism (4-1-3) is distributed in one circle of the pressure lever (4-1-5) and is provided with a connecting rod inner supporting block (4-1-3-1); during working, a groove cutting cylinder workpiece is placed in an extrusion die; the downward bottom of the male die is contacted with the bottom of the grooving barrel workpiece, the spring of the die is compressed, and the inner supporting block of the connecting rod rotates to be horizontal and supports the inner wall of the barrel workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382311.9A CN113275460B (en) | 2021-04-09 | 2021-04-09 | Rib mould in upset blank with horizontal interior muscle barrel work piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382311.9A CN113275460B (en) | 2021-04-09 | 2021-04-09 | Rib mould in upset blank with horizontal interior muscle barrel work piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113275460A CN113275460A (en) | 2021-08-20 |
| CN113275460B true CN113275460B (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110382311.9A Expired - Fee Related CN113275460B (en) | 2021-04-09 | 2021-04-09 | Rib mould in upset blank with horizontal interior muscle barrel work piece |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953363B (en) * | 2021-11-17 | 2023-05-16 | 浙江哈尔斯真空器皿股份有限公司 | Vertical flanging machine |
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| CN102091736A (en) * | 2010-11-04 | 2011-06-15 | 西北工业大学 | Core mold for spinning and forming large-size complex curved generatrix thin-wall member with transverse inner ribs |
| CN102500691A (en) * | 2011-10-13 | 2012-06-20 | 西北工业大学 | Core mould for flow forming of piece with cross inner tendon and de-moulding method of core mould |
| CN207668248U (en) * | 2018-01-08 | 2018-07-31 | 江苏杰润管业科技有限公司 | A kind of flanger that can be applicable in different-diameter cylinder |
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| FR2662667B1 (en) * | 1990-06-05 | 1993-04-09 | Van Leer France | PROCESS AND DEVICE FOR MANUFACTURING A FUT AND WAS OBTAINED ACCORDING TO THIS PROCESS. |
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2021
- 2021-04-09 CN CN202110382311.9A patent/CN113275460B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| US4205544A (en) * | 1978-06-30 | 1980-06-03 | H. C. Price Co. | Apparatus for bending corrugated pipe |
| CN102091736A (en) * | 2010-11-04 | 2011-06-15 | 西北工业大学 | Core mold for spinning and forming large-size complex curved generatrix thin-wall member with transverse inner ribs |
| CN102500691A (en) * | 2011-10-13 | 2012-06-20 | 西北工业大学 | Core mould for flow forming of piece with cross inner tendon and de-moulding method of core mould |
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| CN113275460A (en) | 2021-08-20 |
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