CN204934204U - The top of perforation unit, inner hole structure - Google Patents
The top of perforation unit, inner hole structure Download PDFInfo
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- CN204934204U CN204934204U CN201520592844.XU CN201520592844U CN204934204U CN 204934204 U CN204934204 U CN 204934204U CN 201520592844 U CN201520592844 U CN 201520592844U CN 204934204 U CN204934204 U CN 204934204U
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Abstract
The utility model provides a kind of top, inner hole structure of unit of boring a hole, the top active section of this structure includes top bodkin section L1, top rolloff cone section L2, top inverted cone section L3, top active section is provided with endoporus, the shape of endoporus is similar figures with the shape of top active section outer surface, and formation top active section is uniform wall thickness, the top operating angle of top active section is α, and the afterbody of top active section is provided with L4, top assembling groove section L4.Effect of the present utility model is the deformation effect that this structure improves the product of perforation unit, improves the lumber recovery of product; Improve the cooling effect of top active section, improve head lifetime, enhance top high temperature deformation resistance ability, head lifetime, from average rolling 180 steel pipes, is increased to and on average often props up 260 steel pipes, and the life-span increases by 44%, reduces product cost; Improve steel pipe internal-surface quality and Wall thickness uniformity, lumber recovery improves 0.5%, improves Products competitiveness.
Description
Technical field
The utility model relates to a kind of top, inner hole structure of unit of boring a hole.
Background technology
The prototype structure of MPM unit top is by gondola INNSE company designs, and its structure is top active section and top caudal peduncle Integral design, and casting and the interior hole machined of top are relatively difficult; Because top Integral design is integral cast, endoporus can only be processed into cylindrical by caudal peduncle end face, and can not according to top appearance and size processing, and top active section wall unevenness is even.Because bore design is unreasonable, cause inhomogeneous cooling in the active section use procedure of top even, cooling effect is not good enough, and impact comes directly towards service life; Because Hi-grade steel product constantly increases in production practices process, Metal Hot Forming is insufficient, and the original design structure of top active section can not meet the requirement of flow of metal, and product Wall thickness uniformity is poor.
Summary of the invention
For deficiency structural in prior art, the purpose of this utility model is to provide a kind of top, inner hole structure of unit of boring a hole, and improves the deformation uniformity of metal in punch, improves the cooling effect of top simultaneously, shorten top fabrication cycle, ensure the stability in the work of top.
For achieving the above object, the technical solution adopted in the utility model is to provide a kind of top, inner hole structure of unit of boring a hole, this structure includes top active section, top caudal peduncle, bearing pin, and top active section and top caudal peduncle are fixedly connected with by bearing pin location after installing; Wherein: described top active section includes top bodkin section L1, top rolloff cone section L2, top inverted cone section L3, top active section is provided with endoporus, the shape of endoporus is similar figures with the shape of top active section outer surface, and formation top active section is uniform wall thickness, the top operating angle α of top active section is 3.32 ° ~ 3.56 ° angles, and the afterbody of top active section is provided with top assembling groove section L4.
Effect of the present utility model is by being optimized existing MPM unit top structure, improves the deformation effect of the product of perforation unit, improves the lumber recovery of product; To top endoporus optimization, improve the cooling effect of top active section, ensure that the serviceability come directly towards under the high rhythm condition of production, improve head lifetime; Simultaneously due to the raising of cooling of plug effect, enhance top high temperature deformation resistance ability, head lifetime, from average rolling 180 steel pipes, is increased to and on average often props up 260 steel pipes, and the life-span increases by 44%, reduces product cost; Improve steel pipe internal-surface quality and Wall thickness uniformity, lumber recovery improves 0.5%, improves Products competitiveness.
Accompanying drawing explanation
Fig. 1 is existing top structure schematic diagram;
Fig. 2 is the utility model top structure schematic diagram;
Fig. 3 is the utility model top active section structural representation;
Fig. 4 is the utility model top caudal peduncle structural representation;
Fig. 5 is the utility model structural representation.
In figure:
1, active section 2, top caudal peduncle 3, bearing pin is come directly towards
L, top overall length section L1, top bodkin section L2, top rolloff cone section
L3, top inverted cone section L4, top assembling groove section
Lc, top caudal peduncle section assembling Lf, top endoporus section
Φ P, top diameter of phi d, top diameter of bore Φ D, top assembling groove diameter
Φ A, top caudal peduncle end largest diameter B, caudal peduncle end, top minimum diameter
Φ C, top groove portion minimum diameter Φ M, top pin shaft hole and pin diameter
Detailed description of the invention
By reference to the accompanying drawings the top of perforation unit of the present utility model, inner hole structure are illustrated.
The top of perforation unit of the present utility model, inner hole structure design philosophy are by carrying out split design to top active section and top caudal peduncle, optimize top active section design: the length strengthening top bodkin section L1 and top rolloff cone section L2, simultaneously adjustment top operating angle α; Optimize bore design: top endoporus is according to top sharp processing, and active section forms equal wall shape, in work, each position is heated and cools evenly; Material selection cost lower but the good Q235B of welding performance, the 20CrNi3Mo that alternative cost is higher of top caudal peduncle.Top active section and top caudal peduncle adopt this optimization connected mode.
Top, the inner hole structure of perforation unit of the present utility model are that this structure comprises top active section 1, top caudal peduncle 2, bearing pin 3 three parts composition.Top active section 1 with come directly towards caudal peduncle 2 and to be located by bearing pin 3 and the mode of welding interconnects.
Described top active section 1 includes top bodkin section L1, top rolloff cone section L2, top inverted cone section L3, top active section 1 is provided with endoporus, the shape of endoporus is similar figures with the shape of top active section 1 outer surface, and formation top active section 1 is uniform wall thickness, the top operating angle α of top active section 1 is 3.32 ° ~ 3.56 ° angles, and the afterbody of top active section 1 is provided with top assembling groove section L4.
Described top operating angle α need according to the change of the change of entrance blank diameter, outlet hollow billet diameter and wall thickness, perforating roller operating angle is isoparametric considers, and is the operating angle that 3.32 ° ~ 3.56 ° angular ranges settings are best from top operating angle α.
Described top active section 1 material selection 20CrNi3Mo, in the guarantee operation of rolling, performance is stable.Top caudal peduncle 2 material selection Q235B, ensures the welding performance with top active section, can reduce the buying expenses of caudal peduncle simultaneously.
The top of perforation unit of the present utility model, inner hole structure, wherein coming directly towards diameter of phi P, top bodkin section L1, top rolloff cone section L2, top inverted cone section L3 and top operating angle α is the technological parameter participating in thermal deformation, the Rational Parameters proportioning of top active section 1, namely come directly towards bodkin section L1, top rolloff cone section L2, top inverted cone section L3 and top operating angle α and can ensure that product is in the sufficient thermal deformation of perforation unit, and ensure the uniformity of hollow billet wall thickness and the inner surface quality of product.The shape of top active section 1 endoporus according to top outer surface is processed, form equal wall top, be conducive to ensureing to come directly towards the uniformity of being heated and cooling, finally top active section 1 heat-treated, improve the heat-resistant pressure-resistant ability of top, ensure the performance in the work of top.
As shown in Figure 2, when top active section 1, top caudal peduncle 2, bearing pin 3 three parts are processed separately according to technical requirement, Φ D is top assembling groove diameter, and L4 is top assembling groove section, Φ M is top pin shaft hole diameter, and these three parameters are top active section and top caudal peduncle fitted position; Φ A is for coming directly towards caudal peduncle end maximum gauge, and Φ B is caudal peduncle end, top minimum diameter, and Φ C is groove portion, top minimum diameter, and Lc is that top caudal peduncle section and push rod assemble length, and these three parameters are the fitted position of top caudal peduncle and push rod; Φ d is the hole size of top caudal peduncle.Start after machining to assemble three parts.First the groove position that caudal peduncle 2 medial end portions Φ D × L4 position loads Φ D × L4 in the active section 1 of top will be come directly towards, then top caudal peduncle 2 is rotated, until the pin shaft hole Φ M in the caudal peduncle 2 of top aligns with the pin shaft hole Φ M in the active section 1 of top, put into bearing pin 3 to position, after top active section and caudal peduncle assemble, total length is L.Finally respectively with active section 1 connecting end surface position, top, soldering is carried out to pin shaft hole upper end in the active section 1 of top and top caudal peduncle 2, ensure each parts fixed effect.
Claims (1)
1. the top of a unit of boring a hole, inner hole structure, this structure includes top active section (1), top caudal peduncle (2), bearing pin (3), after top active section (1) and top caudal peduncle (2) are installed, be fixedly connected with by bearing pin (3) location; It is characterized in that:
Described top active section (1) includes top bodkin section L1, top rolloff cone section L2, top inverted cone section L3, top active section (1) is provided with endoporus, the shape of endoporus is similar figures with the shape of top active section (1) outer surface, and formation top active section (1) is uniform wall thickness, the top operating angle α of top active section (1) is 3.32 ° ~ 3.56 ° angles, and the afterbody of top active section (1) is provided with top assembling groove section L4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520592844.XU CN204934204U (en) | 2015-08-03 | 2015-08-03 | The top of perforation unit, inner hole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520592844.XU CN204934204U (en) | 2015-08-03 | 2015-08-03 | The top of perforation unit, inner hole structure |
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| Publication Number | Publication Date |
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| CN204934204U true CN204934204U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520592844.XU Active CN204934204U (en) | 2015-08-03 | 2015-08-03 | The top of perforation unit, inner hole structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676350A (en) * | 2020-12-23 | 2021-04-20 | 大冶特殊钢有限公司 | Ejector rod for perforation and preparation method of ejector rod |
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2015
- 2015-08-03 CN CN201520592844.XU patent/CN204934204U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112676350A (en) * | 2020-12-23 | 2021-04-20 | 大冶特殊钢有限公司 | Ejector rod for perforation and preparation method of ejector rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190709 Address after: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee after: Tianjin Steel Tube Manufacturing Co., Ltd. Address before: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee before: Tianjin Steel Pipe Group Co., Ltd. |