CN102554582B

CN102554582B - Curved surface forming method of steel hyperboloid impeller

Info

Publication number: CN102554582B
Application number: CN201210041631.9A
Authority: CN
Inventors: 陈昊; 陈庆和
Original assignee: CHANGZHOU DINGHENG ELECTROMECHANICAL EQUIPMENT Co Ltd
Current assignee: CHANGZHOU DINGHENG ELECTROMECHANICAL EQUIPMENT Co Ltd
Priority date: 2012-02-23
Filing date: 2012-02-23
Publication date: 2014-02-12
Anticipated expiration: 2032-02-23
Also published as: CN102554582A

Abstract

The invention relates to an impeller forming method of an agitator, in particular to a curved surface forming method of a steel hyperboloid impeller. The forming method comprises the following steps of: (1) equally dividing a curved surface profile curve into a plurality of equal parts by utilizing a vertical coordinate and making a plurality of circles with different radiuses on a horizontal projection plane of the curved surface through sequentially taking horizontal distances of intersection points of bisectors and the profile curve to axis as the radiuses; (2) equally dividing the horizontal projection circles into a plurality of even equal parts through circle centers, sequentially measuring chord length of each circle in one equal part, taking profile curve length as height and the chord length of each circle as width, unfolding and obtaining geometric size of an equally divided faceplate; and (3) after blanking according to preset equally divided number of horizontal projection, welding, assembling and forming the curved surface by utilizing tools. After a vertically incised forming method is adopted, wire cutting process can be simultaneously carried out on a plurality of equally divided faceplate; the frock positioning is simple and reliable; batch production of the steel impeller can be realized; and the forming method has the advantages of good forming, strong stiffness and high efficiency.

Description

Curved surface forming method of steel hyperboloid impeller

Technical field

The present invention relates to a kind of forming method of Agitator Impeller, especially a kind of curved surface forming method of steel hyperboloid impeller.

Background technology

Fiberglass Double-curved-surface stirring machine is as sewage agitating device of new generation, more and more be used widely, but some special occasions only have steel impeller could meet stirring technique requirement, due to the special shape of hyperboloid impeller curved body, can only adopt joining method moulding.Conventional way is that curved body horizontal decomposition is some sections, with some sections of bullet stack welding fabrications (being the cross-sectional method of forming).This kind of forming method exists the defects such as curve form difference is large, integral rigidity is poor, radial missing is uncontrollable, steel impeller promoted the use of and be restricted.

Summary of the invention

In order to overcome, existing impeller curved is poor greatly, the deficiency of poor rigidity, the invention provides a kind of curved surface forming method of steel hyperboloid impeller.

The technical solution adopted for the present invention to solve the technical problems is: curved surface forming method of steel hyperboloid impeller, comprise the following steps: (1) utilizes ordinate that curved body contour curve is divided into some deciles, order be take each intersection point of bisector and contour curve and to the horizontal range of axis as radius, is removed to make on curved body horizontal plane some concentric not isometrical circles; (2) by the center of circle, floor projection circle is divided into some even number deciles, then measure successively each circle in a decile take after chord length contour curve arc length as height, each circle chord length be width, launch to obtain the physical dimension of first-class subpanel; (3) by after the isodisperse blanking that floor projection is set in advance, utilize instrument that curved body is welded to assembled moulding, the regular polygon that the horizontal profile of the curved body after moulding is sub-circular.

The instrument that in described step (3), curved body is welded to assembled moulding is that special-purpose height, diameter, arc size etc. are controlled frock.

On impeller, be coated with anti-corrosion material.

The invention has the beneficial effects as follows, adopt after the vertical profile method of forming, owing to waiting subpanel can multi-disc isochrone cutting processing, each positioning tool be simple and easy reliable, can be mass steel impeller, and forming, rigidity is strong, efficiency is high.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is front view of the present invention;

Fig. 2 is top view of the present invention;

Fig. 3 is the equal component of floor projection of the present invention;

Fig. 4 is first-class subpanel physical dimension of the present invention;

Fig. 5 is moulding figure of the present invention.

The specific embodiment

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, curved surface forming method of steel hyperboloid impeller, comprises the following steps: (1) utilizes ordinate that curved body contour curve is divided into some decile (see figure 1)s; Order be take each intersection point of bisector and contour curve and to the horizontal range of axis as radius, is gone to make on curved body horizontal plane some concentric not isometrical round (see figure 2)s; (2) by the center of circle, floor projection circle is divided into minute (see figure 3)s such as some even numbers; Measure successively again each circle in a decile take after chord length contour curve arc length as height, each circle chord length be width, launch to obtain the physical dimension (see figure 4) of first-class subpanel; (3) by after the isodisperse blanking that floor projection is set in advance, utilize special-purpose height, diameter, arc size etc. to control frock, curved body can weld assembled moulding (see figure 5).The horizontal profile of the curved body after moulding is the regular polygon of sub-circular, and the instrument that in described step (3), curved body is welded to assembled moulding is that special-purpose height, diameter, arc size etc. are controlled frock, is coated with anti-corrosion material on impeller.The advantage of the curved body vertical profile method of forming is that vertical section curve is smooth, and medium fluidised form is unaffected; On cross section, the intersection point of the Polyhedral of approximate circle is pad, and its moulding can only be regular polygon, and radial missing is controlled; The curved body of regular polygon is welded after moulding, the not only mutual tractive of adjacent panels but also support mutually, and integral rigidity obviously improves, and after blade and curved body welding, rigidity further improves.Steel hyperboloid impeller is made of stainless steel material conventionally, when having special requirement for anticorrosion, and can be at impeller surfaces externally and internally anticorrosion with painting material to improve antiseptic property.

Claims

1. curved surface forming method of steel hyperboloid impeller, it is characterized in that, comprise the following steps: (1) utilizes ordinate that curved body contour curve is divided into some deciles, order be take each intersection point of bisector and contour curve and to the horizontal range of axis as radius, is removed to make on curved body horizontal plane some concentric not isometrical circles; (2) by the center of circle, floor projection circle is divided into some even number deciles, then measure successively each circle in a decile take after chord length contour curve arc length as height, each circle chord length be width, launch to obtain the physical dimension of first-class subpanel; (3) by after the isodisperse blanking that floor projection is set in advance, utilize instrument that curved body is welded to assembled moulding, the regular polygon that the horizontal profile of the curved body after moulding is sub-circular.