CN1058739A - Propeller line skeleton moulding method - Google Patents
Propeller line skeleton moulding method Download PDFInfo
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- CN1058739A CN1058739A CN 90106895 CN90106895A CN1058739A CN 1058739 A CN1058739 A CN 1058739A CN 90106895 CN90106895 CN 90106895 CN 90106895 A CN90106895 A CN 90106895A CN 1058739 A CN1058739 A CN 1058739A
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- blade
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- propeller hub
- propeller
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Abstract
The invention provides a kind of propeller line skeleton moulding method, be to be used for the large-scale spiral oar that various ships, warship, ship use to cast the new formative method that used model uses, it is to be assembled in the model that orthographic drawing and the figure of lateral projection use the line skeleton with sash that at least three longitudinal section models that the shadowgraph method makes and several cross section cam group synthesize from each important technological parameters that has provided and relevant drawing by drawing propeller hub 15 and blade 17 earlier.This kind molding location is accurately, blank allowance is even, moulding and easy to assembly, firmly, easy glide not, shorten raw material such as machining period and casting cycle, the new molding sand of saving, carbon dioxide, waterglass, model also can be repeatedly used.
Description
The present invention relates to a kind of propeller line skeleton moulding method, is to be used for the large-scale spiral oar that various ships, warship, ship use to cast the new formative method that used model uses.
In prior art, the screw casting and molding is used wooden natural pattern more, the large-scale spiral oar has both been consumed timber, when taking a lot of work again.Scraper plate face of cylinder model (being commonly called as fish maw shape model) molding and screw pitch gauge moulding have been promoted in recent years, but the making of face of cylinder model must have masterful technique, otherwise be difficult for accurately location, slide easily and move and distortion, make the blank allowance that casts out inhomogeneous, even cause thickness overproof, then very difficult for the blade moulding of varying pitch.Though after adopting the screw pitch gauge moulding, solved this problem preferably, the moudling cycle is long partially, the still difficult control of transition portion.
The purpose of this invention is to provide the accurate positioning of the used model of a kind of casting large-scale screw, no sliding deformation, blank allowance evenly, the casting duration shortens, the line skeleton moulding method of new molding sand and raw material saving and moulding and machining period minimizing.
The invention provides a kind of propeller line skeleton moulding method, it is characterized in that: the propeller blade model that a. made is reached the line skeleton of forming with orthogonal several cross section models of longitudinal section model with rectangle sash by at least three longitudinal section models; B. interjacent longitudinal section model [2] is in the plane at the vertical center line place of propeller hub [15], the plane of remaining longitudinal section model is all with longitudinal section model [2] keeping parallelism and be arranged on its both sides, and leaving above the model of longitudinal section at each respectively needs radius cylindrical cross-section position mark; C. each cross section model is to press certain distance and need be provided with in selected site, the centre of longitudinal section model [2] in conjunction with the different situations of propeller hub [15] and blade [17] end with the different weight percentage numerical value that propeller blade [17] is contained in the maximum radius behind the propeller hub [15]; D. the edge line up and down of each longitudinal and transverse section template is the outline line on the respective surfaces of respectively this model place bland position of blade [17]; E. the connecting line that intersects each point on each longitudinal section model and propeller hub [15] external peripheral surface is that blade [17] is installed to the curve that propeller hub [15] is gone up blade [17] butt; F. each is vertical, the connecting line that intersects each point on the edge line up and down of cross section model and each longitudinal section model and propeller hub [15] external peripheral surface is the maximum radius R that utilizes blade [17], the pitch H of variant radius, blade [17] is near the back rake angle α of propeller hub [15] small end one side, the orthographic drawing that each key data of the expanded view of the geomery of propeller hub and several cylindrical cross-section on different radii (expended outline figure) is drawn the assembling of propeller hub [15] and blade [17] and the figure of lateral projection use the projection technique of painting with the critical sites that obtains necessary amount and smooth-goingly be formed by connecting sleekly, the edge wheel profile of its blade [17] with the edge contour batten with the smooth-going curve that connects into sleekly of section template end points in length and breadth.Its longitudinal and transverse section template is the datum plane of drawing with the central plane of model separately all when making perspective view, the blade tip portion of blade [17] and the round root of leading, being connected with propeller hub [15] with both sides fillet and blade [17] root requirement finishing sand mold according to design drawing and technological procedure after obtaining edge line or intersection point connecting line.It all is that to cut corresponding groove of the notch of each about half height mutually fixing in order to tighten at the joining place in length and breadth its each that its each longitudinal section model and each cross section model connect.
The present invention is compared with prior art: as saving a large amount of valuable timber with the wooden natural pattern contrast of former usefulness, compare with used scraper plate face of cylinder sweep mo(u)lding method, then owing to do not use the placement fish maw shape model of isolated cylindrical arrangement separately, arrange the line skeleton that chucking fixedly has sash in length and breadth and adopt, accurate positioning does not have any sliding deformation.Projection, to draw the more precision of edge line and line of nodes site choose higher, and it is even that the blank deviation is processed institute's made allowance thickness less, can not cause thin scrapping or the overproof machining periods that expend of thickness more.The fragment of brick foreign material can be suitably filled in this external each skeleton sash broad in the middle, a large amount of new molding sand can be saved.Each longitudinal and transverse section template that this kind molding is made all can be suitable on all each blades on the same screw.Assembling is quick rapidly, can form each blade respectively in many places after making model, casts at foundry's combination forming at last, shortens casting cycle.All section template are in length and breadth carried out reference name numbering separately, can be repeatedly used fully, conservation with reproduce type man-hour.
Accompanying drawing:
Fig. 1, propeller line skeleton moulding model general assembly drawing
The blade of Fig. 2, screw [17] right view
The blade of Fig. 4, screw [17] cylindrical cross-section shape figure
Fig. 5, propeller blade expended outline figure
Longitudinal section model shape schematic diagram on Fig. 6, the propeller blade
Fig. 7, propeller blade are chosen longitudinal and transverse section template position view
The cross section model shape schematic diagram of Fig. 8, propeller blade
Part name in the figure:
1, longitudinal section model 2, longitudinal section model 3, longitudinal section model 4, cross section model 5, cross section model 6, cross section model 7, cross section model 8, cross section model 9, cross section model 10, cross section model 11, cross section model 12, blade guide margin 13, blade lagging edge 14, propeller hub small end 15, propeller hub 16, the big end 17 of propeller hub, blade 18, short longitudinal section model
An accompanying drawings specific embodiment of the present invention: the propeller hub [15] and the right side that a blade [17] has been installed that is respectively the large-scale spiral oar of a diameter more than 6 meters of certain ship shown in accompanying drawing 2,3,4 looked, rearview and blade [17] be at the cylindrical cross-section shape figure of 60% position of its maximum radius R.This cross section arc length is
Straight length after the expansion is S, after launching, should tilt, its lift angle is θ, tan θ=(H)/(2 π (0.6R)), wherein H is the pitch of pressure face (promptly on the quarter or the surface of the propeller blade of propeller hub small end one side) at the 0.6R place, and lift angle θ utilizes the pitch triangle to make.Main in the drawings reference line OU it be blade [17] lead, with the datum line of both sides area distributions, be again the datum line of when mapping control back rake angle α.Longitudinal section model [2] in the moulding is through the installation basis of this OU line as skeleton.And be given the keeping flat to gather and be called expended outline figure on the schematic diagram that is plotted in blade when rotating a lift angle θ at the expansion profile by each cylindrical cross-section on the OU line at propeller hub [15] center with eight, nine different weight percentage numerical value (generally getting 0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9 and 0.95 nine) of the maximum radius R of blade [17] of design drawing shown in the accompanying drawing 5.Wherein each profile has been represented the maximum ga(u)ge position and the size thereof of blade, and two back gauges are the gauge of each different size position of the thick position line (accompanying drawing 5 only keeps each and launches profile, and relevant sized data all omits).The shape and size of the pitch H of the maximum radius R of blade [17], variant radius, the back rake angle α of pressure face (the oblique helicoid bus becomes 90 °+α angle with axis) and propeller hub also are provided on the technical data.Utilize each above known key data to draw the orthographic drawing and the figure of lateral projection of propeller hub [15] and blade [17] assembling, use the projection technique of painting key point by obtaining necessary amount and smooth-goingly connect the longitudinal section model [2] drawn out by the OU line sleekly, draw out and all the other longitudinal section models of about parallel plane ten of section template [2] in length and breadth outer edge line up and down earlier with quadrat method, the more then blank dimension is more accurate in sampling, but workload is then bigger, generally can press the propeller blade diameter and suitably select.Only need select the model of each one, two correct position of left and right sides to need 3～5 longitudinal section models to get final product altogether during moulding, need leave above the model of longitudinal section at each respectively needs radius cylindrical cross-section position mark so that check.8～9 cross section models from 0.2R to 0.95R that can be made in successively behind enough longitudinal section size of samples on OU master's reference line have been arranged.The corresponding groove of the notch that these cross section models of being made and the intersection point place of selected three (or five) longitudinal section model respectively leave about half height is so that fixing in order to tighten, and the line skeleton after the combination as shown in Figure 1.For making shape partly can suitably set up the short short longitudinal section model [18] of several block lengths at the round root part and blade [17] blade tip of the blade [17] of contiguous propeller hub [15] excircle for the purpose of more accurate, the edge wheel profile of its blade [17] with the edge contour batten with the smooth-going curve that connects into sleekly of section template end points in length and breadth.Suitably filling fragment of brick, foreign material, old molding sand etc. of the darker sash of each big at interval degree of depth in the middle of it can be saved materials such as new molding sand, carbon dioxide, waterglass when making sand mold after the manufacturing of this line skeleton is finished.Only need when making sand mold the thin part in surface and edge of blade housing parts is made fillet and circular arc according to design drawing and technological procedure, circle finishing sand mold is smeared on each surface up and down.All each models can be made polylith go forward side by side row labels and numbering simultaneously according to each propeller blade number, with after disassemble keeping and be repeatedly used.
Claims (3)
1, a kind of propeller line skeleton moulding method is characterized in that:
A. the propeller blade model of being made is reached the line skeleton of forming with orthogonal several cross section models of longitudinal section model with rectangle sash by at least three longitudinal section models;
B. interjacent longitudinal section model [2] is in the plane at the vertical center line place of propeller hub [15], the plane of remaining longitudinal section model is all with longitudinal section model [2] keeping parallelism and be arranged on its both sides, and leaving above the model of longitudinal section at each respectively needs radius cylindrical cross-section position mark;
C. each cross section model is to press certain distance and need be provided with in selected site, the centre of longitudinal section model [2] in conjunction with the different situations of propeller hub [15] and blade [17] end with the different weight percentage numerical value that propeller blade [17] is contained in the maximum radius behind the propeller hub [15];
D. the edge line up and down of each longitudinal and transverse section template is the outline line on the respective surfaces of respectively this model place bland position of blade [17];
E. the connecting line that intersects each point on each longitudinal section model and propeller hub [15] external peripheral surface is that blade [17] is installed to the curve that propeller hub [15] is gone up blade [17] butt;
F. each is vertical, the connecting line that intersects each point on the edge line up and down of cross section model and each longitudinal section model and propeller hub [15] external peripheral surface is the maximum radius R that utilizes blade [17], the pitch H of variant radius, blade [17] is near the back rake angle γ of propeller hub [15] small end one side, the orthographic drawing that each key data of the expanded view of the geomery of propeller hub and several cylindrical cross-section on different radii (expended outline figure) is drawn the assembling of propeller hub [15] and blade [17] and the figure of lateral projection use the projection technique of painting with the crucial position that obtains necessary amount and put and smooth-goingly be formed by connecting sleekly, the edge wheel profile of its blade [17] with the edge contour batten with the smooth-going curve that connects into sleekly of section template end points in length and breadth.
2, formative method according to claim 1, it is characterized in that described longitudinal and transverse section template is the datum plane of drawing with the central plane of model separately all when making perspective view, the blade tip portion of blade [17] and the round root of leading, being connected with propeller hub [15] with both sides fillet and blade [17] root requirement finishing sand mold according to design drawing and technological procedure after obtaining edge line or intersection point connecting line.
3, formative method according to claim 1, it is characterized in that described each the longitudinal section model and the connection of each cross section sample all be its each in length and breadth the joining place cut mutually each about half the height corresponding groove of the notch fixing in order to tighten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106895 CN1026471C (en) | 1990-08-07 | 1990-08-07 | Propeller line skeleton moulding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106895 CN1026471C (en) | 1990-08-07 | 1990-08-07 | Propeller line skeleton moulding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1058739A true CN1058739A (en) | 1992-02-19 |
| CN1026471C CN1026471C (en) | 1994-11-09 |
Family
ID=4880323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106895 Expired - Fee Related CN1026471C (en) | 1990-08-07 | 1990-08-07 | Propeller line skeleton moulding method |
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| Country | Link |
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| CN (1) | CN1026471C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069560C (en) * | 1999-10-14 | 2001-08-15 | 卢有根 | Method for manufacturing cast iron lion |
| CN1074952C (en) * | 1997-09-02 | 2001-11-21 | 林宇清 | Propeller producing process |
| CN102125980A (en) * | 2011-03-10 | 2011-07-20 | Stx（大连）发动机有限公司 | Casting moulding process for preparing large ship propeller from synthetic resin |
| CN101367430B (en) * | 2008-10-16 | 2011-08-03 | 武汉重工铸锻有限责任公司 | Method for manufacturing large-scale copper alloy screw propeller single pattern leaf blade with glass fibre reinforced plastics |
| CN101708530B (en) * | 2009-11-25 | 2012-01-11 | 大连船用推进器有限公司 | Overlying and molding method |
| CN102353314A (en) * | 2011-06-10 | 2012-02-15 | 哈尔滨飞机工业集团有限责任公司 | Detection method for outline of main blade of helicopter |
| CN104014983A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工业大学（威海） | Method for machining ducted propeller |
| CN104828224A (en) * | 2015-05-08 | 2015-08-12 | 广西金达造船有限公司 | Split-type propeller structure |
| CN105642838A (en) * | 2016-04-06 | 2016-06-08 | 台州市椒江永固船舶螺旋桨厂 | Boss cap fin machining technology |
| CN107745080A (en) * | 2017-10-09 | 2018-03-02 | 铜陵安东铸钢有限责任公司 | A kind of laying method of running gate system |
| CN109434020A (en) * | 2018-12-27 | 2019-03-08 | 大连船用推进器有限公司 | The choosing method of special-shaped blade casting and molding cross sectional plates |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063687C (en) * | 1997-10-16 | 2001-03-28 | 杨光兴 | Technique for integral casting of stainless steel propeller |
-
1990
- 1990-08-07 CN CN 90106895 patent/CN1026471C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074952C (en) * | 1997-09-02 | 2001-11-21 | 林宇清 | Propeller producing process |
| CN1069560C (en) * | 1999-10-14 | 2001-08-15 | 卢有根 | Method for manufacturing cast iron lion |
| CN101367430B (en) * | 2008-10-16 | 2011-08-03 | 武汉重工铸锻有限责任公司 | Method for manufacturing large-scale copper alloy screw propeller single pattern leaf blade with glass fibre reinforced plastics |
| CN101708530B (en) * | 2009-11-25 | 2012-01-11 | 大连船用推进器有限公司 | Overlying and molding method |
| CN102125980A (en) * | 2011-03-10 | 2011-07-20 | Stx（大连）发动机有限公司 | Casting moulding process for preparing large ship propeller from synthetic resin |
| CN102353314A (en) * | 2011-06-10 | 2012-02-15 | 哈尔滨飞机工业集团有限责任公司 | Detection method for outline of main blade of helicopter |
| CN104014983A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工业大学（威海） | Method for machining ducted propeller |
| CN104014983B (en) * | 2014-05-29 | 2016-08-31 | 哈尔滨工业大学（威海） | A kind of ducted propeller processing method |
| CN104828224A (en) * | 2015-05-08 | 2015-08-12 | 广西金达造船有限公司 | Split-type propeller structure |
| CN105642838A (en) * | 2016-04-06 | 2016-06-08 | 台州市椒江永固船舶螺旋桨厂 | Boss cap fin machining technology |
| CN107745080A (en) * | 2017-10-09 | 2018-03-02 | 铜陵安东铸钢有限责任公司 | A kind of laying method of running gate system |
| CN109434020A (en) * | 2018-12-27 | 2019-03-08 | 大连船用推进器有限公司 | The choosing method of special-shaped blade casting and molding cross sectional plates |
| CN109434020B (en) * | 2018-12-27 | 2020-05-19 | 大连船用推进器有限公司 | Method for selecting section plate for casting and molding special-shaped blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1026471C (en) | 1994-11-09 |
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