CN101786142B - Cylindrical coordinate parallel casting method of large-size pitch-adjustable propeller blade - Google Patents

Cylindrical coordinate parallel casting method of large-size pitch-adjustable propeller blade Download PDF

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Publication number
CN101786142B
CN101786142B CN2010100101095A CN201010010109A CN101786142B CN 101786142 B CN101786142 B CN 101786142B CN 2010100101095 A CN2010100101095 A CN 2010100101095A CN 201010010109 A CN201010010109 A CN 201010010109A CN 101786142 B CN101786142 B CN 101786142B
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CN
China
Prior art keywords
flange
wooden
blade
sand
casting
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CN2010100101095A
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Chinese (zh)
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CN101786142A (en
Inventor
权林林
何大川
王国仕
孙广敏
于霄雷
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大连船用推进器有限公司
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Priority to CN2010100101095A priority Critical patent/CN101786142B/en
Publication of CN101786142A publication Critical patent/CN101786142A/en
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Publication of CN101786142B publication Critical patent/CN101786142B/en

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Abstract

The invention discloses a cylindrical coordinate parallel casting method of a large-size pitch-adjustable propeller blade. The cylindrical coordinate parallel casting method is characterized by comprising the following steps of: positioning a flange wood former in a square hub body wood former, modeling a wood former full pattern of a blade flange part, measuring a pressure generating surface by using a pitch gauge; forming a suction surface sand mould; forming cylindrical coordinate parallel measuring points; then carrying out mould assembling and modeling on the flange part and the blade part; forming a sand core of a casting head part produced by a wood former core box; and finally lifting the sand core for assembling molding and casting. The invention has the characteristics of simple manufacture of the wood former and sand mold, high precision of casting size, high process yield, safe casting, fewer casting defects and reliable quality, is suitable for being popularized and applied to manufacturing water turbine blades and other monomer blades pitch-adjustable propeller blade with the diameter larger than 3.5m, or water turbine blades with larger pitch ratio, longitudinal tilt or lateral tilt and complicated geometrical shape.

Description

Cylindrical coordinate parallel casting method of large-size pitch-adjustable propeller blade
Technical field
The present invention relates to formative technology, relate in particular to the casting method of pitch-adjustable propeller blade.
Background technology
At present, monomer blades such as traditional large-size pitch-adjustable propeller blade and turbine blade, all adopt two kinds of casting methods: first kind is the moulding of the full wooden model full pattern of single blade, vertical or horizontal casting; Second kind is single leaf circular cylindrical coordinate measuring point, flange wooden model tyre retreading moulding, vertical or horizontal casting.
More than the subject matter that concerning the large-size pitch-adjustable screw, exists of two kinds of methods be: (1) wooden model full pattern, tyre retreading geometry deformation are too big, and dimensional accuracy is difficult to guarantee; (2) moulder's plane is long-pending requires greatly, needs repeatedly mould turnover of monomer; (3) attitude of moulding and casting needs repeatedly change, to tight case and casting security presence hidden danger; (4) owing to be monomer running channel and rising head, product yield is too low.Along with improving constantly of scientific and technological level, adopt cylindrical coordinate parallel casting method, traditional formative method is improved, imperative.This method need not change its moulding casting attitude, and precision improves, casting safety, owing to be parallelly connected moulding, moudling cycle and product yield all are greatly improved.
Summary of the invention
The object of the invention is to propose a kind of monomer blade cylindrical coordinate parallel castings such as turbine blade that are used for diameter greater than all bigger complex geometry of the adjustable pitch propeller of 3.5m or pitch ratio, rake or skew back.
Technical solution of the present invention is achieved in that
A kind of large-size pitch-adjustable propeller blade cylindrical coordinate parallel casting comprises the step that presets mold(ing) board, it is characterized in that, comprises the steps:
(1) 4 prefabricated flange wooden models are positioned on the square wooden model hub body, and make the centre mark line of flange be on the same horizontal line with same circular cylindrical coordinate radius on;
(2) wooden model hub body and flange wooden model are inserted in screw pitch gauge axle thick stick, and with 4 conformal drag boxs of screw pitch gauge measuring instrument adjustment;
(3) by the centre mark line of 4 flanges; Confirm the position relation of flange and sand mo(u)ld blade with screw pitch gauge; Both cylindrical-coordinate system initial points of unification are made the sand mo(u)ld spatial point with the screw pitch gauge survey on the conformal drag box, and form pressure face space curved surface sand mo(u)ld, the hardenable pressure facing sand mould of blade; Continuing on the pressure face that has been shaped, to make suction surface with molding sand as stated above is the sand mo(u)ld blade, and the sclerosis back is with the conformal cope cope of pounding out, and top box hardens;
(4) in the cylindrical-coordinate system parallel connection, produce three remaining blades as stated above;
(5) hang out screw pitch gauge and axle thick stick, hang out square wooden model hub body again, laterally take out the flange wooden model, open top box;
(6) repair upper and lower case respectively, mould assembling hangs in the wooden model hub body of having removed the wooden model flange again, and the case of pounding between real each blade stitches, and makes it to become integral body;
(7) hang out wooden model hub body, flange and blade are satisfied moulding;
(8) make profile and the identical core box of said wooden model hub body; In establish ring gate and dock with cross gate, ingate docks with the flange lowest part, forms 4 ingates that are uniformly distributed with; And the position by 4 flanges is provided with 4 deltiod rising head passages that are uniformly distributed with, and is concentrated to 1 round rising head;
(9), hang in mould assembling in the hub body sand mo(u)ld with the above-mentioned core box loam core of pounding out.
Compared with prior art, advantage of the present invention shows that mainly wooden model and sand mo(u)ld make easyly, and casting dimension accuracy is high, and product yield is high, casting safety, and casting flaw is few, aspects such as reliable in quality.
Description of drawings
Drawings attached 2 width of cloth of the present invention, wherein:
Fig. 1 is a process chart of the present invention;
Fig. 2 is a technological design sketch map of the present invention.
In the drawings: 1, ring gate, 2, flange center's mark line, 3, square wooden model hub body, 4, the screw pitch gauge measuring instrument, 5, the axle thick stick, 6, the circle rising head, 7, the rising head passage, 8, the blade sand mo(u)ld, 9, mold(ing) board, 10, the flange wooden model.
The specific embodiment
A kind of large-size pitch-adjustable propeller blade cylindrical coordinate parallel casting as depicted in figs. 1 and 2; Its technological forming is divided into three parts and forms: i.e. the wooden model full pattern moulding of blade flange part; The moulding of blade cylindrical coordinate parallel measuring point, the moulding of dead head part core box.
Concrete technical process is following:
1, blade flange part
General adopt 4 blade parallel connections, promptly make 4 flange wooden model full patterns, and be uniformly distributed with and be positioned on the square wooden model hub body with axle center circular hole, make the centre mark line of all flanges be on the same horizontal line with same circular cylindrical coordinate radius on.
Set up cylindrical-coordinate system, wooden model hub body (being with 4 flanges) is inserted in screw pitch gauge axle thick stick, use 4 conformal drag boxs of screw pitch gauge measuring instrument adjustment.
2, blade-section
By the centre mark line of 4 flanges, confirm the position relation (promptly unified cylindrical-coordinate system initial point) of flange and sand mo(u)ld blade with screw pitch gauge.On the conformal drag box, make the sand mo(u)ld spatial point, formed the pressure face space curved surface sand mo(u)ld (being integrally formed in also flange section being included in) of blade with the screw pitch gauge survey.Hardenable pressure facing sand mould continues in type pressure face, to make suction surface (being the sand mo(u)ld blade) with molding sand as stated above, and the sclerosis back is with the conformal cope cope of pounding out, and top box hardens.
According to said method can in the cylindrical-coordinate system parallel connection, produce remaining 3 blades.
Hang out screw pitch gauge and axle thick stick, hang out wooden model hub body again, laterally take out the flange wooden model, open top box.
Nowel, mould assembling are gone up in finishing respectively.Hang in wooden model hub body (not flanged) again, the case seam of pounding between real each blade makes it to become integral body.Hang out wooden model hub body at last, flange, blade are moulding like this.
3, dead head part
Cross gate is pre-buried, and sprue is docked to cross gate after whole mould assembling.Ingate and rising head then adopt the moulding of wooden model core box.
Make profile and the same core box (being that wooden model hub body is the mould assembling core print of core box) of wooden model hub body; Establishing ring gate in the core box docks with cross gate; Ingate docks with the flange lowest part; Form 4 ingates that are uniformly distributed with, be provided with 4 by the position of 4 flanges and be uniformly distributed with deltiod rising head passage and be concentrated to 1 the round rising head in center.With the core box loam core of pounding out, hang in mould assembling in the hub body sand mo(u)ld.

Claims (1)

1. a diameter comprises the step that presets mold(ing) board (9) greater than the pitch-adjustable propeller blade cylindrical coordinate parallel casting of 3.5m, it is characterized in that: comprise the steps:
(1.1) prefabricated 4 flange wooden models (10) are positioned on the square wooden model hub body (3), and make the centre mark line (2) of flange be on the same horizontal line with same circular cylindrical coordinate radius on;
(1.2) wooden model hub body (3) and flange wooden model (10) are inserted in screw pitch gauge axle thick stick (5), and with 4 conformal drag boxs of screw pitch gauge measuring instrument (4) adjustment;
(1.3) by the centre mark line (2) of 4 flanges; Confirm the position relation of flange and sand mo(u)ld blade (8) with screw pitch gauge measuring instrument (4); Both cylindrical-coordinate system initial points of unification; On the conformal drag box, make the sand mo(u)ld spatial point, and form pressure face space curved surface sand mo(u)ld, the hardenable pressure facing sand mould of blade with screw pitch gauge measuring instrument (4) survey; Continuing on the pressure face that has been shaped, to make suction surface with molding sand as stated above is sand mo(u)ld blade (8), and the sclerosis back is with the conformal cope cope of pounding out, and top box hardens;
(1.4) in the cylindrical-coordinate system parallel connection, produce three remaining blades as stated above;
(1.5) hang out screw pitch gauge measuring instrument (4) and axle thick stick (5), hang out square wooden model hub body (3) again, laterally take out flange wooden model (10), open top box;
(1.6) repair upper and lower case respectively, mould assembling hangs in the wooden model hub body (3) of having removed flange wooden model (10) the case seam between real each blade of pounding again, makes it to become integral body;
(1.7) hang out wooden model hub body (3), flange and blade are satisfied moulding;
(1.8) make profile and the identical core box of said wooden model hub body; In establish ring gate (1) and dock with cross gate, ingate docks with the flange lowest part, forms 4 ingates that are uniformly distributed with; And the position by 4 flanges is provided with 4 deltiod rising head passages (7) that are uniformly distributed with, and is concentrated to 1 round rising head (6);
(1.9), hang in mould assembling in the hub body sand mo(u)ld with the above-mentioned core box loam core of pounding out.
CN2010100101095A 2010-01-12 2010-01-12 Cylindrical coordinate parallel casting method of large-size pitch-adjustable propeller blade CN101786142B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010100101095A CN101786142B (en) 2010-01-12 2010-01-12 Cylindrical coordinate parallel casting method of large-size pitch-adjustable propeller blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010100101095A CN101786142B (en) 2010-01-12 2010-01-12 Cylindrical coordinate parallel casting method of large-size pitch-adjustable propeller blade

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CN101786142A CN101786142A (en) 2010-07-28
CN101786142B true CN101786142B (en) 2012-01-11

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102322426B (en) * 2011-09-05 2014-06-11 襄樊五二五泵业有限公司 Device for measuring coordinates of curved column for impeller blade of centrifugal pump
CN102371343A (en) * 2011-11-01 2012-03-14 常州轻工职业技术学院 Impeller casting cement core and manufacture process
CN102430700A (en) * 2011-12-05 2012-05-02 苏州东方模具科技股份有限公司 Method for single box casting of glass mold copper alloy bottom mold by rein sand
CN104001864B (en) * 2014-04-23 2016-04-27 黄石新兴管业有限公司 Large-size horizontal axial-flow pump opposite opened diffuser casting method
CN104482838B (en) * 2014-12-23 2017-07-18 大连船用推进器有限公司 A kind of propeller blade measuring method
CN105195681A (en) * 2015-08-31 2015-12-30 苏州金业船用机械厂 Large ship propeller casting technology
CN106166599A (en) * 2016-07-20 2016-11-30 珠海市和裕丰船舶设备有限公司 A kind of 3D prints the method manufacturing propeller
CN109648250B (en) * 2019-01-30 2020-10-02 广州文冲船舶修造有限公司 Method for repairing insert of broken propeller of propeller

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Inventor after: Quan Linlin

Inventor after: He Dachuan

Inventor after: Wang Guoshi

Inventor after: Sun Guangmin

Inventor after: Yu Xiaolei

Inventor before: He Dachuan

Inventor before: Quan Linlin

Inventor before: Liu Xiu

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Free format text: CORRECT: INVENTOR; FROM: HE DACHUAN QUAN LINLIN LIU XIU TO: QUAN LINLIN HE DACHUAN WANG GUOSHI SUN GUANGMIN YU XIAOLEI

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