CN104511538A - Eight-flap middle-narrowing die assembly - Google Patents
Eight-flap middle-narrowing die assembly Download PDFInfo
- Publication number
- CN104511538A CN104511538A CN201410640865.4A CN201410640865A CN104511538A CN 104511538 A CN104511538 A CN 104511538A CN 201410640865 A CN201410640865 A CN 201410640865A CN 104511538 A CN104511538 A CN 104511538A
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- CN
- China
- Prior art keywords
- lobe
- die
- mould lobe
- sizing
- transition region
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
An eight-flap middle-narrowing die assembly comprises a die body. The die body is a hollow cylinder and composed of a plurality of flaps. The eight-flap middle-narrowing die assembly is simple in structure and reasonable in design and capable of narrowing the middle portion of a tube in high machining speed and production efficiency, the multi-flap combination matched with locking hole and screw hole fixing and positioning is utilized to be easy to assembly and disassemble and to greatly improve the accuracy of the machined tube, an upper sizing area and a lower sizing area are used to size the tube to be machined to avoid deformation of the middle-narrowed tube and improve yield, a transition circular arc is arranged on an upper transition area and a lower transition area to avoid chamfer polishing of the machined tube to further reduce production costs of the tube and improve the production efficiency of the tube, and the longitudinal cross section of a locking hole is trapezoidal to reduce the shock to the locking hole during middle narrowing of the tube and prolong the service life of the die.
Description
Technical field
The present invention relates to a kind of mould, the waist contracting the mould particularly contracting of pipe fitting waist related to.
Background technology
Pipe fitting waist contracts, exactly fore shaft is carried out to the middle part of pipe fitting, on market, most enterprises only provides the end face fore shaft at pipe fitting two ends, the contracting of pipe fitting waist that small part enterprise provides mostly be the contracting of numerical control waist or direct pouring shaping, numerical control waist contracting working (machining) efficiency is not high, easily there is resilience in processed pipe fitting simultaneously, affect product quality, the shaping not only production efficiency of direct pouring is low, limits by its mould simultaneously, pipe fitting precision is not high and need the later stage to polish, and adds production cost.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of eight lobe waist contracting die assemblies.
For solving above technical problem, technical scheme provided by the invention is:
A kind of eight lobe waist contracting die assemblies, it is characterized in that, comprise die main body, described die main body is hollow circular cylinder, is made up of multiple mould lobe, and there is a locked groove lower end in the outside of die main body, and described locked groove is annular; The inner chamber of the hollow circular cylinder that die main body is is die cavity, described die cavity is once upper sizing area, compressional zone and lower sizing area from top to bottom, and described upper sizing area is cylindrical, and its radius is R1, described lower sizing area is cylindrical, its radius is R3, and described compressional zone comprises transition region and Yao Suo district, and described Yao Suo district is cylindrical, its radius is R2, described transition region comprises transition region and lower transition region, and described upper transition region and lower transition region are the taper on top, are symmetricly set in two ends, Yao Suo district; The radius R 2 in the radius R 3> Yao Suo district of sizing area under the radius R 1=of described upper sizing area;
Described mould lobe is a part for the die main body in hollow circular cylinder, mould lobe is respectively sizing section under sizing section on mould lobe, mould lobe compression section and mould lobe from top to bottom, on described mould lobe sizing section through multiple mould lobe combine surround the upper sizing area that cavity is die cavity, described mould lobe compression section through multiple mould lobe combine surround the compressional zone that cavity is die cavity, under described lobe sizing section through multiple mould lobe combine surround the lower sizing area that cavity is die cavity; Under described mould lobe, the outside of sizing section is provided with fore shaft, and described fore shaft forms ringwise locked groove through multiple mould lobe combination;
Further, described mould lobe quantity is 8-10, is preferably 8;
Further, the two ends up and down of described upper transition region and lower transition region are equipped with transition arc;
Further, the longitudinal section of described fore shaft is trapezoidal;
Further, the outside of mould lobe is provided with multiple screw.
Beneficial effect of the present invention is:
Structure of the present invention is simple, reasonable in design, waist contracting is carried out in the middle part of pipe fitting, process velocity is fast, production efficiency is high, utilize multimode lobe to combine simultaneously, fore shaft and screw is coordinated to fix and locate, not only assembling is simple, convenient disassembly, and substantially increase the precision of processing rear tubular member, sizing is carried out to processing pipe fitting in upper sizing area and lower sizing area, avoid after the contracting of pipe fitting waist, caliber deforms, improve yield rate, the transition arc that upper transition region and lower transition region are arranged, without the need to chamfering of polishing after making pipe fitting process, reduce the production cost of pipe fitting, improve the production efficiency of pipe fitting, the longitudinal section of fore shaft is trapezoidal simultaneously, when reducing the contracting of pipe fitting waist, the impact that fore shaft is subject to, extend the mold use life-span.
Accompanying drawing explanation
Fig. 1 schematic diagram of the present invention.
Fig. 2 die cavity schematic diagram.
Fig. 3 die cavity sectional view.
Fig. 4 mould lobe schematic diagram.
Fig. 5 flap sectional view.
Detailed description of the invention
A kind of eight lobe waist contracting die assemblies, it is characterized in that, die main body 2, described die main body 2 are hollow circular cylinder, are made up of multiple mould lobe 21, and described mould lobe 21 quantity is 8, and there is a locked groove 22 lower end in the outside of die main body 2, and described locked groove 22 is annular, the inner chamber of the hollow circular cylinder that die main body 2 is is die cavity 6, described die cavity 6 is once upper sizing area 61 from top to bottom, compressional zone 62 and lower sizing area 63, described upper sizing area 61 is cylindrical, its radius is R1, described lower sizing area 63 is cylindrical, its radius is R3, described compressional zone 62 comprises transition region 65 and Yao Suo district 64, described Yao Suo district 64 is cylindrical, its radius is R2, described transition region 645 comprises transition region 66 and lower transition region 67, described upper transition region 66 and lower transition region 67 are for going the taper of pushing up, be symmetricly set in two ends, Yao Suo district 64, the two ends up and down of described upper transition region 66 and lower transition region 67 are equipped with transition arc 68, the radius 62 in the radius R 3> Yao Suo district 44 of sizing area 63 under the radius R 1=of described upper sizing area 61, described mould lobe 21 is a part for the die main body 1 in hollow circular cylinder, mould lobe 21 is respectively sizing section 211 on mould lobe from top to bottom, sizing section 213 under mould lobe compression section 212 and mould lobe, on described mould lobe sizing section 211 through 8 mould lobes 21 combine surround the upper sizing area 61 that cavity is die cavity 6, described mould lobe compression section 212 through 8 mould lobes 21 combine surround the compressional zone 62 that cavity is die cavity 6, under described mould lobe sizing section 213 through 8 mould lobes 21 combine surround the lower sizing area 63 that cavity is die cavity 6, under described mould lobe, the outside of sizing section 213 is provided with fore shaft 221, and described fore shaft 221 combines through 8 mould lobes 21 and forms ringwise locked groove 22, and the longitudinal section of described fore shaft 221 is trapezoidal, and the outside of mould lobe 21 is provided with 3 screws 23.
A kind of eight lobe waist contracting die assemblies, its structure is simple, reasonable in design, waist contracting is carried out in the middle part of pipe fitting, process velocity is fast, production efficiency is high, utilize multimode lobe to combine simultaneously, fore shaft and screw is coordinated to fix and locate, not only assembling is simple, convenient disassembly, and substantially increase the precision of processing rear tubular member, sizing is carried out to processing pipe fitting in upper sizing area and lower sizing area, avoid after the contracting of pipe fitting waist, caliber deforms, improve yield rate, the transition arc that upper transition region and lower transition region are arranged, without the need to chamfering of polishing after making pipe fitting process, reduce the production cost of pipe fitting, improve the production efficiency of pipe fitting, the longitudinal section of fore shaft is trapezoidal simultaneously, when reducing the contracting of pipe fitting waist, the impact that fore shaft is subject to, extend the mold use life-span.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (5)
1. eight lobe waist contracting die assemblies, it is characterized in that, comprise die main body, described die main body is hollow circular cylinder, is made up of multiple mould lobe, and there is a locked groove lower end in the outside of die main body, and described locked groove is annular; The inner chamber of the hollow circular cylinder that die main body is is die cavity, described die cavity is once upper sizing area, compressional zone and lower sizing area from top to bottom, and described upper sizing area is cylindrical, and its radius is R1, described lower sizing area is cylindrical, its radius is R3, and described compressional zone comprises transition region and Yao Suo district, and described Yao Suo district is cylindrical, its radius is R2, described transition region comprises transition region and lower transition region, and described upper transition region and lower transition region are the taper on top, are symmetricly set in two ends, Yao Suo district; The radius R 2 in the radius R 3> Yao Suo district of sizing area under the radius R 1=of described upper sizing area, described mould lobe is a part for the die main body in hollow circular cylinder, mould lobe is respectively sizing section under sizing section on mould lobe, mould lobe compression section and mould lobe from top to bottom, on described mould lobe sizing section through multiple mould lobe combine surround the upper sizing area that cavity is die cavity, described mould lobe compression section through multiple mould lobe combine surround the compressional zone that cavity is die cavity, under described lobe sizing section through multiple mould lobe combine surround the lower sizing area that cavity is die cavity; Under described mould lobe, the outside of sizing section is provided with fore shaft, and described fore shaft forms ringwise locked groove through multiple mould lobe combination.
2. a kind of eight lobe waist contracting die assemblies as claimed in claim 1, is characterized in that, described mould lobe quantity is 8-10, is preferably 8.
3. a kind of eight lobe waist contracting die assemblies as claimed in claim 1, it is characterized in that, the two ends up and down of described upper transition region and lower transition region are equipped with transition arc.
4. a kind of eight lobe waist contracting die assemblies as claimed in claim 1, it is characterized in that, the longitudinal section of described fore shaft is trapezoidal.
5. a kind of eight lobe waist contracting die assemblies as claimed in claim 1, it is characterized in that, the outside of mould lobe is provided with multiple screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410640865.4A CN104511538A (en) | 2014-11-14 | 2014-11-14 | Eight-flap middle-narrowing die assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410640865.4A CN104511538A (en) | 2014-11-14 | 2014-11-14 | Eight-flap middle-narrowing die assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104511538A true CN104511538A (en) | 2015-04-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410640865.4A Pending CN104511538A (en) | 2014-11-14 | 2014-11-14 | Eight-flap middle-narrowing die assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104511538A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4060722B2 (en) * | 2002-09-19 | 2008-03-12 | 住友金属工業株式会社 | Hydraulic bulge mold, hydraulic bulge processing apparatus, and hydraulic bulge processing method for deformed pipe |
| CN201543736U (en) * | 2009-09-29 | 2010-08-11 | 沈阳市汽车开关厂 | Hollow tube reducing device |
| CN102019303A (en) * | 2009-09-14 | 2011-04-20 | 上海海隆石油管材研究所 | Device and method for preparing aluminum alloy drill rod tube body |
| CN102554056A (en) * | 2012-01-09 | 2012-07-11 | 芜湖双翼液压件有限公司 | Steel pipe throat processing method |
| CN102554023A (en) * | 2012-01-17 | 2012-07-11 | 燕山大学 | Pipe local reducing method |
-
2014
- 2014-11-14 CN CN201410640865.4A patent/CN104511538A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4060722B2 (en) * | 2002-09-19 | 2008-03-12 | 住友金属工業株式会社 | Hydraulic bulge mold, hydraulic bulge processing apparatus, and hydraulic bulge processing method for deformed pipe |
| CN102019303A (en) * | 2009-09-14 | 2011-04-20 | 上海海隆石油管材研究所 | Device and method for preparing aluminum alloy drill rod tube body |
| CN201543736U (en) * | 2009-09-29 | 2010-08-11 | 沈阳市汽车开关厂 | Hollow tube reducing device |
| CN102554056A (en) * | 2012-01-09 | 2012-07-11 | 芜湖双翼液压件有限公司 | Steel pipe throat processing method |
| CN102554023A (en) * | 2012-01-17 | 2012-07-11 | 燕山大学 | Pipe local reducing method |
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Application publication date: 20150415 |
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| RJ01 | Rejection of invention patent application after publication |