CN100553821C - The forming method of spiral subsection blade - Google Patents
The forming method of spiral subsection blade Download PDFInfo
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- CN100553821C CN100553821C CNB2008100238705A CN200810023870A CN100553821C CN 100553821 C CN100553821 C CN 100553821C CN B2008100238705 A CNB2008100238705 A CN B2008100238705A CN 200810023870 A CN200810023870 A CN 200810023870A CN 100553821 C CN100553821 C CN 100553821C
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Abstract
The present invention relates to a kind of spiral subsection blade forming method, this method cuts into the annulus blank with sheet material earlier, and press annulus radially, between the endoporus of annulus and cylindrical, cut seaming and cutting mouth always, with the cylindrical location of annulus blank, the part of mold pressing annulus blank, the mold pressing of local annulus blank is gone out the part helicoid, the annulus blank is through repeatedly rotation and repeatedly local mold pressing, and when the rotation of annulus blank surpassed a week, the mold pressing of spiral subsection blade finished.The present invention greatly reduces the required forming force of spiral subsection blade, and the size of the mould of use is little, and equipment energy consumption is low, and the helical blade product spiral radian that adopts the present invention to make is continuously whole, any surface finish, and accurate, consistency of thickness are shaped.Can be with a kind of spiral subsection blade of mould production plurality of specifications, production cost significantly reduces, and can make the material spiral subsection blade of high strength and high hardness.
Description
Technical field
The present invention relates to a kind of compression-moulding methods of helical blade, the compression-moulding methods of particularly a kind of spiral subsection blade part belongs to the pressure processing technology field.
Background technology
Helical blade is used very extensively as the accessory of material handling machinery, and at present, the forming method of spiral subsection blade mainly contains following two kinds:
(1) with steel plate cutting stock processing and preparing blank, earlier the blocks of welding of blank is connected into a round barrel shape segmented body, end with segmented body welds dead location on power transmission shaft again, the other end is drawn into the conveyor screw segmentation with powerful pulling force equipment, then each conveyor screw segmentation is welded piecemeal and be linked to be final helical blade, this method production efficiency is low, time-consuming, the accuracy of manufacture is poor, and the pitch error of helical blade reaches more than 10%.
(2) on forcing press, the blank one piece is pressed into spiral subsection blade with mould, this method must be used large pressing machine, the equipment price costliness, the manufacturing cost height, especially when the blade forming of major diameter and big thickness, the mold pressing ability of general forcing press can not satisfy the pressing requirements of subsection blade; In addition, a kind of spiral subsection blade moulding of specification needs a supporting mould of paying, because the specification of helical blade is a lot, for satisfying the helical blade manufacturing of different size, die needed input is very big, and the initial end face of the spiral subsection blade that is pressed into and termination endface perpendicular to the angle of helicoid axis projection less than 360 °.
The applying date is on June 4th, 2004, Granted publication number discloses a kind of " one-piece auger blade molding equipment " for the Chinese patent of CN 2700018Y, the lathe bed of this equipment is provided with power section, running part and control section, and lathe bed is provided with Helical Blade Mould; Power section drives spiral mould fixedly connected on the main shaft and rotates, and banded plate is sent in the movable spiral mould that is provided with on the planker, and along with moving of planker, banded blank is rolled up gradually and is pressed into the one-piece auger blade.
The applying date is on December 19th, 2006, and Granted publication is number for the Chinese patent of CN 200991819Y discloses a kind of " helical blade make-up machine ", and this machine comprises tapered rollers pressurizing unit and traction coiling device.When rolling helical blade, earlier banded plate is sent in the tapered rollers pressurizing unit, through the cold extrusion of at least three pairs of tapered rollers, banded plate produces plain bending, outward flange attenuation; Force the banded plate of traction to pass the V-type groove of traction roller by the traction coiling device again, roll into whole helical blade.
These two patent disclosures all be to adopt method for tandem rolling to make the former of helical blade, this manufacture method has stock utilization height, advantage of high production efficiency, but, the thin inward flange made from method for tandem rolling of helical blade outward flange is thick, helical blade in uneven thickness, because helical blade required rolling deformation force in the process of roll forming is very big, this method and former thereof can only be made the helical blade of minor diameter and little thickness, and formed precision is relatively poor, can not make the helical blade of equal thickness; Can not satisfy the spiral forming of major diameter, big thickness material, high hardness material and stainless steel material, and only be suitable for producing in enormous quantities helical blade.
Summary of the invention
The forming method that the purpose of this invention is to provide a kind of spiral subsection blade adopts this forming method can make the spiral subsection blade of high accuracy, equal thickness, and the pitch error of this spiral subsection blade is little, does not need to carry out succeeding stretch again; Can be with the spiral subsection blade of mold manufacturing different size, different-thickness, can make the initial end face of every spiral subsection blade and termination endface perpendicular to the angle of helicoid axis projection greater than 360 °, improved the utilization rate of material.
Technical scheme of the present invention is as follows:
A kind of forming method of spiral subsection blade may further comprise the steps:
(1) blank preparation
Dimensional requirement by required spiral subsection blade cuts into the annulus blank with sheet material, and presses annulus radially, cuts seaming and cutting mouth always between the endoporus of annulus and cylindrical;
(2) blank location
The blank for preparing is put into mould, with the cylindrical location of annulus blank;
(3) segmentation compression molding
The part of moving mold mold pressing annulus blank, the localized mode of annulus blank is extruded the part helicoid, after moving mold breaks away from local annulus blank, the annulus blank is rotated to an angle around its center of circle, the local annulus blank of not mold pressing is rotated on the fixed mold, the annulus blank is through repeatedly rotation and repeatedly local mold pressing, and when the rotation of annulus blank surpassed a week, the mold pressing of spiral subsection blade finished.
Purpose of the present invention can also further realize by following technical measures.
Aforesaid spiral subsection blade forming method, wherein in the mold process of described annulus blank, the number of times of required rotation is 3～5 times from start to end.
Aforesaid spiral subsection blade forming method, the initial end face of wherein said spiral subsection blade and termination endface are 380 °-430 ° perpendicular to the angle of helicoid axis projection.
The present invention has the following advantages:
1, accurate, the consistency of thickness of spiral subsection blade shaping, pitch error has only 1%.The spiral subsection blade that adopts the present invention to make, only need each spiral subsection blade is welded into the making that conveyor screw has promptly been finished helical blade, need not re-use the conveyor screw segmentation that powerful pulling force equipment stretches and is welded into by spiral subsection blade, improve production efficiency.The present invention adopts the method for the continuous compression moulding of the repeatedly local molded blank of segmentation, spiral subsection blade residual deformation and the additional stress made are little, because spiral subsection blade has passed through flow harden, the tensile strength of product, yield strength and hardness all increase, and the mechanical property of product is even.
2, because spiral subsection blade has adopted the molded method of localized mode of repeatedly suppressing continuously of the present invention, during mold pressing, the contact area of blank and mould during than existing one piece compression moulding the contact area of blank and mould much smaller, greatly reduce the required forming force of spiral subsection blade, the driving power of spiral subsection blade moulding special equipment is reduced, energy consumption reduces, the volume weight of equipment reduces, simultaneously, owing to only need local mold pressing, the size of mould also has only 1/3～1/4 of existing mold, in a word, the present invention greatly reduces the manufacturing cost of spiral subsection blade moulding special equipment and mould and the production cost of spiral subsection blade.
3, the spiral subsection blade thickness that adopts the present invention to make is even, and the initial end face of spiral subsection blade and termination endface can reach 430 ° perpendicular to the angle maximum of helicoid axis projection, have improved stock utilization.The present invention can be with a kind of spiral subsection blade of mould production plurality of specifications, and production cost significantly reduces, and can make the material spiral subsection blade of high strength and high hardness, the helical blade precision height of making, and pitch error has only about 1%.
4, the present invention is easy and simple to handle, laborsaving, and only needing the cylindrical with the annulus blank is benchmark, just can utilize the deadweight of blank accurately to locate, and blank rotates convenient.
Advantage of the present invention and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the annulus blank stereogram of spiral subsection blade.
Fig. 2, Fig. 3 are work step schematic diagrames of the present invention.
Fig. 4 is the schematic diagram of the local annulus blank of mold pressing of the present invention.
Fig. 5 is the stereogram of Fig. 4.
Fig. 6 utilizes the spiral subsection blade of manufacturing of the present invention to be welded into the stereogram of helical blade.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
The annulus blank that the present invention adopts cuts seaming and cutting mouth 11 always as shown in Figure 1 between the endoporus radially of annulus 1 and cylindrical.Blank preparation of the present invention is the dimensional requirement by required helical blade, earlier sheet material is adopted the method for NC Flame Cutting or plasma cutting to make annulus blank 1, also press annulus radially then, cut seaming and cutting mouth 11 always between the endoporus of annulus and cylindrical, the blank anchor ring of formation is near 360 °.When existing integral die blank becomes spiral subsection blade, must on the anchor ring of annulus blank, cut out sector notch earlier, the fan-shaped anchor ring of blank that forms is less than 360 °, obviously, the latter's blank area is less than the former, the initial end face of the spiral subsection blade made from the latter and termination endface perpendicular to the angle of helicoid axis projection less than 360 °.
As Fig. 2, shown in Figure 3, the part of the annulus blank 1 for preparing is placed on the working curved surface of fixed mold 2, the cylindrical of annulus blank 1 is owing to the restriction that is subjected to backstay 21a, 21b obtains the location.The part of moving mold mold pressing annulus blank 1 is with the localized mode extrusion part helicoid of annulus blank 1; Moving mold breaks away from annulus blank 1 then, again annulus blank 1 is rotated to an angle around its center of circle, the part of the annulus blank 1 of not mold pressing is rotated on the fixed mold 2, like this, annulus blank 1 is through repeatedly rotation, repeatedly local mold pressing, when the rotation of annulus blank 1 surpasses a week, the compression molding of spiral subsection blade, initial end face of the spiral subsection blade of making and termination endface are 380 °～430 ° perpendicular to the angle of helicoid axis projection.
Be in closure state as Fig. 4, fixed mold shown in Figure 52 with moving mold 3, annulus blank 1 bar 21a, the 21b location that is positioned.
Helical blade shown in Figure 6 is to be welded into by each spiral subsection blade that adopts manufacturing of the present invention, the initial end face of each spiral subsection blade helicoid and termination endface perpendicular to the angle of helicoid axis projection all greater than 360 °.
Facts have proved the consistency of thickness of the spiral subsection blade outer edge that employing the present invention produces.The present invention can reduce the active force of each compression moulding significantly, satisfy the compression molding of the spiral subsection blade of the diameter high hardness material from 1～12 millimeter and stainless steel material from 800 millimeters of Φ 150～Φ, thickness, the product spiral radian of making is continuously whole, any surface finish, and can be with the product of a mold production plurality of specifications.
In addition to the implementation, the present invention also has other embodiments, adopts vertically etc. as the spiral subsection blade former, and all employings are equal to replaces or technical scheme that equivalent transformation forms, all drops in the protection domain of requirement of the present invention.
Claims (3)
1. the forming method of a spiral subsection blade is characterized in that, may further comprise the steps:
(1) blank preparation
Dimensional requirement by required helical blade cuts into the annulus blank with sheet material, and presses annulus radially, cuts seaming and cutting mouth always between the endoporus of annulus and cylindrical;
(2) blank location
The blank for preparing is put into mould, with the cylindrical location of annulus blank;
(3) segmentation compression molding
The part of moving mold mold pressing annulus blank, the mold pressing of local annulus blank is gone out the part helicoid, moving mold breaks away from local annulus blank, the annulus blank is rotated to an angle around its center of circle, the local annulus blank of not mold pressing is rotated on the fixed mold, and the annulus blank is through repeatedly rotation and repeatedly local mold pressing; When the rotation of annulus blank surpassed a week, the mold pressing of spiral subsection blade finished.
2. the forming method of spiral subsection blade according to claim 1 is characterized in that, the described annulus blank mold pressing number of times of required rotation from start to end is 3～5 times.
3. the forming method of spiral subsection blade according to claim 1 is characterized in that, the initial end face of spiral subsection blade and termination endface are 380 °-430 ° perpendicular to the angle of helicoid axis projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100238705A CN100553821C (en) | 2008-04-18 | 2008-04-18 | The forming method of spiral subsection blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100238705A CN100553821C (en) | 2008-04-18 | 2008-04-18 | The forming method of spiral subsection blade |
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| Publication Number | Publication Date |
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| CN101259512A CN101259512A (en) | 2008-09-10 |
| CN100553821C true CN100553821C (en) | 2009-10-28 |
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| CNB2008100238705A Active CN100553821C (en) | 2008-04-18 | 2008-04-18 | The forming method of spiral subsection blade |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102485451B (en) * | 2010-12-03 | 2014-07-02 | 贵州建新南海科技股份有限公司 | Die pressing method and device for blank of porcelain insulator |
| CN102632372A (en) * | 2012-04-20 | 2012-08-15 | 江苏华谊管件有限公司 | Process for forming helical transmission device and die for processing same |
| CN102837163B (en) * | 2012-09-26 | 2014-08-06 | 卧龙电气集团股份有限公司 | Manufacturing method of backward inclined fan blade of high efficiency motor |
| CN108127349A (en) * | 2017-07-17 | 2018-06-08 | 阳泉煤业（集团）有限责任公司 | A kind of thermal power plant boiler is with giving coal spiral production method |
| CN109092978B (en) * | 2018-07-20 | 2019-09-06 | 太原科技大学 | One kind is based on the formed in mould bent bus helical blade forming method of multiple spot |
| CN111889978B (en) * | 2020-08-03 | 2022-02-25 | 郑州九冶三维化工机械有限公司 | Manufacturing method of spiral supporting plate of large vertical mill |
| CN112916697B (en) * | 2021-01-08 | 2022-12-16 | 中国航空制造技术研究院 | Helicopter blade edge covering subsection step-by-step forming method |
| CN113798801A (en) * | 2021-08-30 | 2021-12-17 | 新兴铸管股份有限公司 | Forming method of thick helical blade |
| CN114178406B (en) * | 2021-11-18 | 2023-08-01 | 苏州金峰物联网技术有限公司 | Spiral sheet pressing equipment, spiral sheet processing method and spiral chute |
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| C14 | Grant of patent or utility model | ||
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Assignee: ZHENJIANG BANGHE SPIRAL MANUFACTURING CO., LTD. Assignor: Li Yue Contract record no.: 2011320000150 Denomination of invention: Forming method of spiral subsection blade Granted publication date: 20091028 License type: Exclusive License Open date: 20080910 Record date: 20110304 |
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Effective date of registration: 20180607 Address after: 212000 Zhenjiang City, Jiangsu Province, Guan Tang Qiao Town Industrial Park Patentee after: ZHENJIANG BANGHE SPIRAL MANUFACTURING CO., LTD. Address before: 212009 Zhenjiang economic and Technological Development Zone, Zhenjiang, Jiangsu, via five road. Patentee before: Li Yue |
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