CN205147578U - Special processing shank -pin is made to screw for high performance craft - Google Patents
Special processing shank -pin is made to screw for high performance craft Download PDFInfo
- Publication number
- CN205147578U CN205147578U CN201520940322.4U CN201520940322U CN205147578U CN 205147578 U CN205147578 U CN 205147578U CN 201520940322 U CN201520940322 U CN 201520940322U CN 205147578 U CN205147578 U CN 205147578U
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- Prior art keywords
- mixing
- mixing part
- stirring portion
- pin
- shaft shoulder
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Abstract
The utility model discloses a special processing shank -pin is made to screw for high performance craft, wherein, shank -pin's one end is inserted in the shaft shoulder, the other end extends outside the shaft shoulder, the tip that shank -pin extends outside the shaft shoulder is equipped with stirring portion, stirring portion includes first stirring portion and second stirring portion, first stirring portion quantity is four, is convex structure, distributes shank -pin western zhou dynasty, second stirring portion quantity is four, distributes first stirring portion junction, first stirring portion links to each other with second stirring portion interval in proper order, forms closed curved surface. Through special design's shank -pin, can effectively stir, promote stirring efficiency, improve the result of use.
Description
Technical field
The present invention relates to a kind of high performance craft screw and manufacture special processing mixing needle.
Background technology
China becomes the first in the world shipbuilding big country already, to the development of shipbuilding power.Current China shipbuilding gross ton figure place is sure to occupy the first in the world.Along with the arrival in ocean epoch, Shipping industry is in the important stage of the development of great-leap-forward, needs a large amount of high-performance ship, and also more and more higher to the requirement of boats and ships and parts quality thereof.Therefore, more utility model is embodied also for the importance of the mechanical property of propeller material, anti-Cavitation to show.Screw is in Ship Propeling process, continuous generation cavity, the negative pressure explosion that cavity produces produces up to hundreds of MPa to 1000MPa pulse stress screw surface, under the reciprocation of seawater corrosion, vacuolus denudation and stress corrosion, propeller blade can even rupture greatly reduction of service life.For a long time, vacuolus denudation, seawater corrosion and stress corrosion are considered to the problem be not easily solved, and a lot of research institution, from the structural point of propulsion system, starts with from structure and solves vacuolus denudation problem, but poor effect always, could not solve the vacuolus denudation problem of screw.From the sixties in last century, the material of the seawater corrosion resistances such as external development Cr-Ni-Mo system stainless steel, Fe-Mn-Al alloy, cermet, Ti-Ni alloy, anti-vacuolus denudation, but the rarely found copper alloy had as propeller material.There is scholar both at home and abroad to metal material surface chromium plating process; find that corrosion resistance is mother metal 7 ~ 8 times by polarization curve research; improve 2 ~ 6 times service life; built-up welding is carried out at Ni-Al bronze propeller material; laser cladding method forms the anti-cavitation corrosion coating protection of copper alloy propeller material, but a lot of technique and method to weigh hundreds of kilogram even the screw of tens tons apply and be restricted and restriction.Consult according to related documents, from the eighties in last century, abroad more domestic scholars have carried out more detailed research to propeller material surface spraying, surface modification work, obtain useful result of the test, but do not carry out application study to entity spiral oar.But these researchs all relatively early, all not can solve the surface property problem of screw.
Agitating friction welding be utilize workpiece end face mutually to move, heat that phase mutual friction produces, make end reach hot plastic state, then upset rapidly, complete a kind of method of welding.Machining tool design is the core of Friction welding technique, and selects suitable machining tool to be the key realizing high quality welds.The essence of friction stir welding heat-machine effect occurs between mixing needle and materials to be welded and forms joint, and mixing needle directly bears that heat is carried, power carries and fretting wear in the process.Mixing yoghurt instrument of the prior art comprises the shaft shoulder and mixing needle, and described mixing needle is arranged on described shaft shoulder one end, the mixing yoghurt instrument of this structure due to mixing needle be independent, easily wear and tear during use, and due to contact area limited, therefore, working (machining) efficiency is lower.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high performance craft screw to manufacture special processing mixing needle for above drawback, by the mixing needle of particular design, can effectively stir, and promotes stirring efficiency, improve result of use.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of high performance craft screw manufactures special processing mixing needle, wherein, one end of described mixing needle is inserted in the described shaft shoulder, the other end extends in outside the described shaft shoulder, the end that described mixing needle extends in outside the shaft shoulder is provided with mixing part, described mixing part comprises the first mixing part and the second mixing part, described first mixing part quantity is four, in arc-shaped structure, be distributed in described mixing needle Western Zhou Dynasty, described second mixing part quantity is four, be distributed in described first junction, mixing part, described first mixing part and the second mixing part are connected at interval successively, form closed curved surface.
Above-mentioned a kind of high performance craft screw manufactures special processing mixing needle, and wherein, described first mixing part is symmetrical set on described mixing needle.
Above-mentioned a kind of high performance craft screw manufactures special processing mixing needle, and wherein, described second mixing part is symmetrical set on described mixing needle.
Compared to prior art, the beneficial effects of the utility model are:
By the design of the special geometry of stirring-head, coordinated with the second mixing part by the first mixing part of uniqueness, the softener material below shaft shoulder end can be made to be subject to the effect of the power of inward direction, thus the center being conducive to the softener material formed below shaft shoulder end to collect shaft shoulder end face is to add the cavity filling mixing needle rear and formed, and the design of multiple mixing parts, the contact area with softener material can be increased substantially, improve mixing effect.Need the stress reducing stirring-head inside in friction process concentrate and protect mixing needle simultaneously, thus, extend service life of the present utility model.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is side view of the present utility model.
Fig. 3 be the utility model use time and shaft shoulder installation diagram.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the utility model is described in further detail.
A kind of high performance craft screw manufactures special processing mixing needle, wherein, one end of described mixing needle 1 is inserted in the shaft shoulder 2 of agitating device, the other end extends in outside the shaft shoulder 2, described mixing needle 1 end extended in outside the shaft shoulder 2 is provided with mixing part 3, described mixing part 3 comprises the first mixing part 31 and the second mixing part 32, described first mixing part 31 quantity is four, in arc-shaped structure, be distributed in described mixing needle 1 Western Zhou Dynasty, described second mixing part 32 quantity is four, be distributed in described first junction, mixing part 31, described first mixing part 31 and the second mixing part 32 are connected at interval successively, form closed curved surface.Described first mixing part 31 is symmetrical set on described mixing needle 1.Described second mixing part 32 is symmetrical set on described mixing needle 1.
Compared to prior art, the beneficial effects of the utility model are:
By the design of the special geometry of stirring-head, coordinated with the second mixing part by the first mixing part of uniqueness, the softener material below shaft shoulder end can be made to be subject to the effect of the power of inward direction, thus the center being conducive to the softener material formed below shaft shoulder end to collect shaft shoulder end face is to add the cavity filling mixing needle rear and formed, and the design of multiple mixing parts, the contact area with softener material can be increased substantially, improve mixing effect.Need the stress reducing stirring-head inside in friction process concentrate and protect mixing needle simultaneously, thus, extend service life of the present utility model.
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 (3)
1. a high performance craft screw manufactures special processing mixing needle, it is characterized in that, one end of described mixing needle is inserted in the shaft shoulder of agitating device, the other end extends in outside the described shaft shoulder, the end that described mixing needle extends in outside the shaft shoulder is provided with mixing part, described mixing part comprises the first mixing part and the second mixing part, described first mixing part quantity is four, in arc-shaped structure, be distributed in described mixing needle Western Zhou Dynasty, described second mixing part quantity is four, be distributed in described first junction, mixing part, described first mixing part and the second mixing part are connected at interval successively, form closed curved surface.
2. a kind of high performance craft screw as claimed in claim 1 manufactures special processing mixing needle, it is characterized in that, described first mixing part is symmetrical set on described mixing needle.
3. a kind of high performance craft screw as claimed in claim 1 manufactures special processing mixing needle, it is characterized in that, described second mixing part is symmetrical set on described mixing needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940322.4U CN205147578U (en) | 2015-11-24 | 2015-11-24 | Special processing shank -pin is made to screw for high performance craft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940322.4U CN205147578U (en) | 2015-11-24 | 2015-11-24 | Special processing shank -pin is made to screw for high performance craft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205147578U true CN205147578U (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520940322.4U Expired - Fee Related CN205147578U (en) | 2015-11-24 | 2015-11-24 | Special processing shank -pin is made to screw for high performance craft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205147578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436695A (en) * | 2015-11-24 | 2016-03-30 | 镇江同舟螺旋桨有限公司 | Machining stirring pin special for manufacturing high-performance marine propellers |
-
2015
- 2015-11-24 CN CN201520940322.4U patent/CN205147578U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436695A (en) * | 2015-11-24 | 2016-03-30 | 镇江同舟螺旋桨有限公司 | Machining stirring pin special for manufacturing high-performance marine propellers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20191124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |