CN1686628A - Cold extrusion shaping method of prestressed anchor jaw - Google Patents
Cold extrusion shaping method of prestressed anchor jaw Download PDFInfo
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- CN1686628A CN1686628A CN 200510018626 CN200510018626A CN1686628A CN 1686628 A CN1686628 A CN 1686628A CN 200510018626 CN200510018626 CN 200510018626 CN 200510018626 A CN200510018626 A CN 200510018626A CN 1686628 A CN1686628 A CN 1686628A
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- intermediate plate
- blank
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- extrusion
- cold extrusion
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- 238000000641 cold extrusion Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 28
- 238000007493 shaping process Methods 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims description 12
- 208000019300 CLIPPERS Diseases 0.000 claims description 11
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 claims description 11
- 238000000137 annealing Methods 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 2
- 238000010008 shearing Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
A cold extrusion technology for manufacturing the prestressed clamping plates of anchors includes such steps as shearing steel plates to obtain blanks, loading in the die of cold extrusion press and cold extrusion.
Description
Technical field:
The invention belongs to building engineering field, particularly a kind of cold-extrusion molding method of pre-stress anchor clipper.
Background technology:
No matter be bridge spanning the sea, river levee dam, skyscraper or the construction project of seabed tunnel at present, it all is the widespread usage prestressed anchor, this prestressed anchor mainly is made up of several parts such as intermediate plate (2 or 3) anchor slab, steel strand wires and pressing plates, and the maximum part of wherein most important usage quantity is exactly an intermediate plate; Intermediate plate since work use in its installation form be outside poppet surface match with interior anchor slab internal taper hole face, inner surface is a kind of tooth shape structure, be tight by carving of the appearance conical surface, add that intermediate plate is symmetrically distributed (2 chip) or around distribute (3 chip), special like this mounting means and steel strand wires are firmly bitten, thereby reach stretch-draw and produce prestressed purpose, and prestressing force is big more, stretch-draw is tight more, intermediate plate is also big more to the engagement force of steel strand wires, because of intermediate plate bears bigger axial tension and radial pressure in the course of the work, so the overall performance to intermediate plate requires very high, tooth shape part particularly, its bending strength, compression strength, impact flexibility, hardness all must possess excellent comprehensive performances, and the main method of producing pre-stress anchor clipper at present is to adopt blanking, forge, bore, car, mill, tappings etc. rely on metal-cutting machining method fully, exist major defect to be: 1., raw material (blank) waste is big, 2., used forging, bore, car, mill, lathes such as tapping are many, input cost is big, 3., production process is many, transfer time is long, production cycle is long, 4., workman's operating technology is required high, dimensional accuracy is restive, unstable product quality, need the direct labor many, 5., the special installation fit system of intermediate plate and anchor slab particularly, from the mechanics angle tooth shape is partly had special physical dimension requirement, the cutting type that is adopted awl tapping method can't satisfy this requirement at all, and labour intensity is big, efficient is low.The current technical scheme that does not also have directly to produce by cold extrusion the pre-stress anchor clipper moulding with steel plate.The invention provides a kind of cold-extrusion molding method of pre-stress anchor clipper, overcome the shortcoming that present production pre-stress anchor clipper method exists, solve directly to produce and adopt steel plate (blank), obtain the forming technique of pre-stress anchor clipper by cold extrusion.
Summary of the invention:
Technical scheme of the present invention is to adopt steel plate material (blank), forms the forming method of the pre-stress anchor clipper of intermediate plate and tooth portion structure by cold extrusion, describes in detail in conjunction with following technological process:
1), cuts material, steel plate material is cut monolithic intermediate plate isosceles trapezoid blank with shearing machine, and concrete size is selected with " equal-volume principle " according to the actual volume of monolithic intermediate plate, and (V is a stock volume generally to get V=Δ U, U is the volume of intermediate plate product, and Δ is correction factor, generally gets 1.1～1.35);
2), preformed, 1), the isosceles trapezoid blank is pressed into crooked watt shape blank, the central axis of its curved surface and trapezoidal on go to the bottom should be perpendicular, subsequent corrosion should with next procedure 3), the corresponding die cavity of shaping mould position (being blank installing port position) radius matches;
3), moulding, with the mould charging door of packing into of watt shape blank after the preformed, negative mold is contained on the workbench of forcing press, convex mold is contained on the forcing press power source, according to the specification of different intermediate plates, the mold materials difference, select suitable, enough big pressure tonnage (Hydraulically Operated Equipment or punch press all can) forcing press arranged, according to general cold-extrusion technology requirement, the cold extrusion extrusion pressure P of steel is generally at 200Kgf/mm
2, be more than the 1960Mpa cold extrusion shaped;
4), annealing, select the vacuum annealing furnace annealing, the purpose of this technology is in order to eliminate the shaping residual stress of intermediate plate product inside, to improve product interior tissue performance, particularly eliminating " work hardening " influence that the front operation may be brought;
5), the refine integer, product is repaired, remove the unnecessary blank on the blank, improve the dimensional accuracy of intermediate plate workpiece, the one rubber mounting groove as the usefulness of packing is arranged, increase this groove pressing process as the big end design of the conical surface of intermediate plate product, if there is not this groove, then do not want this suppression process;
6), tooth moulding, the tooth shape structure compound extrusion forming of intermediate plate is according to the different tooth forms of intermediate plate product, and design one is columned moulding extruding cutter, on die, establish a stopping means and make the degree of depth that control moulding extruding rotor rolls the tooth line, can compound extrusion forming intermediate plate product.
The present invention directly with the cold extrusion shaped intermediate plate product of steel plate than the advantage of prior art is: intermediate plate product once cold extrusion is molded, and the product comprehensive quality performance is good, lacks with material, production process letter, with short production cycle, the direct labor is few and production efficiency is high, and labour intensity is little, and the cost cost is low.
Description of drawings:
Fig. 1 is a production technology block diagram of the present invention (seeing Figure of description).
The specific embodiment:
Embodiment is referring to Fig. 1: adopt steel board to be cut into isosceles trapezoid with shearing machine, watt shape blank with isosceles trapezoid blank compacting preformed bending, again watt shape blank of bending is adorned mould, the forcing press extrusion modling, the vacuum annealing furnace annealing, the refine integer is removed unnecessary corner blank, and the big end of the conical surface of intermediate plate product adds rubber mounting groove of compacting on demand, and the tooth shape structure Compound Extrusion of last intermediate plate becomes the pre-stress anchor clipper product.
Claims (9)
1, a kind of cold-extrusion molding method of pre-stress anchor clipper, it is characterized in that ground tackle monolithic intermediate plate adopts steel board, by cutting blank, preformed, moulding, annealing, the refine integer and/add compacting rubber mounting groove, the tooth shape structural manufacturing process of Compound Extrusion intermediate plate, the dress mould is directly made pre-stress anchor clipper with cold extruding technique.
2,, it is characterized in that the said blank technology of cutting is that steel board is cut into the isosceles trapezoid blank according to the method for claim 1.
3,, it is characterized in that said preforming process is that the isosceles trapezoid blank is pressed into crooked watt shape blank according to the method for claim 1.
4,, it is characterized in that said moulding process is that intermediate plate is made in watt shape blank dress mould cold extrusion of bending according to the method for claim 1.
5,, it is characterized in that said annealing process adopts the vacuum annealing furnace annealing according to the method for claim 1.
6, according to the method for claim 1, it is characterized in that said refine integer technology, be to intermediate plate product finishing, remove the corner overflow surplus blank and/add a rubber mounting groove suppression process.
7, according to the method for claim 1, it is characterized in that the tooth shape structure of said compacting intermediate plate, be that design one is pushed cutter to columned moulding, on die, establish a stopping means, compound cold-extruded is pressed into the tooth shape structure of intermediate plate.
8, according to the method for claim 1 and 2, it is selected with " equal-volume principle " according to the actual volume of monolithic intermediate plate to it is characterized in that cutting billet size, gets V=Δ U, and Δ generally gets 1.1～1.35.
9, according to the method for claim 1～7, the cold extrusion extrusion pressure P that it is characterized in that steel is at 200Kgf/mm
2, be more than the 1960Mpa cold extrusion shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510018626 CN1686628A (en) | 2005-04-25 | 2005-04-25 | Cold extrusion shaping method of prestressed anchor jaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510018626 CN1686628A (en) | 2005-04-25 | 2005-04-25 | Cold extrusion shaping method of prestressed anchor jaw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1686628A true CN1686628A (en) | 2005-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510018626 Pending CN1686628A (en) | 2005-04-25 | 2005-04-25 | Cold extrusion shaping method of prestressed anchor jaw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1686628A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391689C (en) * | 2005-12-06 | 2008-06-04 | 张有龙 | Method for manufacturing prestress ground tackle clamping piece by hot extrusion |
| CN100410000C (en) * | 2005-12-06 | 2008-08-13 | 张有龙 | Method for manufacturing ground tackle for finish rolling of screw-thread steel by heat expansion |
| CN103624548A (en) * | 2013-04-08 | 2014-03-12 | 苏州工业园区凯艺精密科技有限公司 | Shape righting chamfering machine |
| CN113059101A (en) * | 2021-04-07 | 2021-07-02 | 杨飞 | Production process of cold extrusion (cold heading) prestress extrusion anchor |
-
2005
- 2005-04-25 CN CN 200510018626 patent/CN1686628A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391689C (en) * | 2005-12-06 | 2008-06-04 | 张有龙 | Method for manufacturing prestress ground tackle clamping piece by hot extrusion |
| CN100410000C (en) * | 2005-12-06 | 2008-08-13 | 张有龙 | Method for manufacturing ground tackle for finish rolling of screw-thread steel by heat expansion |
| CN103624548A (en) * | 2013-04-08 | 2014-03-12 | 苏州工业园区凯艺精密科技有限公司 | Shape righting chamfering machine |
| CN103624548B (en) * | 2013-04-08 | 2016-01-27 | 苏州工业园区凯艺精密科技有限公司 | Orthopedic beveler |
| CN113059101A (en) * | 2021-04-07 | 2021-07-02 | 杨飞 | Production process of cold extrusion (cold heading) prestress extrusion anchor |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |