The forming method of hyperbolic streamlined bridge abutment moulding plate space surface
Technical field:
The present invention relates to the processing method of the streamlined template of hyperbolic, especially a kind of forming method of hyperbolic streamlined bridge abutment moulding plate space surface.
Background technology:
The hyperbolic streamlined bridge abutment moulding plate is a most complicated present bridge abutment moulding plate, and it makes the shaping work that maximum difficulty is the arc section space curved surface.The baiting method of traditional imitative type gas welding cutting, error is very big, makes the poor quality of whole curved surface forming.Mould once press-fits the method for moulding, only is applicable to the space curved surface that size is less.Therefore, can't adopt traditional imitative type method and modern die methods.
Summary of the invention:
The present invention is intended to address the above problem, and provide a kind of according to mathematical principle, whole space curved surface is rationally divided, the segmentation that utilizes Pro/E to carry out space curved surface then flattens, utilize the seamless link between Pro/E and the CAXA, realize the kneading of line transect, utilize numerical control underwater plasma cutting machine to finish the forming method of the hyperbolic streamlined bridge abutment moulding plate space surface that flattens the curved surface blanking.
Realize that the technical scheme that foregoing invention adopts is: a kind of forming method of hyperbolic streamlined bridge abutment moulding plate space surface, carry out as follows:
A, in AutoCAD, utilize with directly for Qu Yuanli, the string of the radian on the space curved surface short transverse being used instead segmentation replaces, height of lift is consistent as far as possible, and the maximal clearance between the arc of the segmentation string corresponding with it is no more than 1.5mm;
The space basic size of each segmentation curved surface that b, utilization obtain in AutoCAD is set up the space three-dimensional model in Pro/E, and carries out the refinement flattening, obtains accurate space curved surface expanded view;
C, the expanded view among the Pro/E is changed into the formatted file of CAXA, the border line transect of expanded view is reasonably mediated the curved surface expanded view that is optimized;
D, the curved surface expanded view of optimizing is changed into program code, pass to numerical control underwater plasma cutting machine and finish blanking;
E, three stone rollers of use are pressed the radius of the circular arc of each segmentation curved surface correspondence, roll arc, finish the moulding of space curved surface;
F, according to from both sides to the order of centre, with each segment space curved surface welding fabrication on mold of forming, finish the making of space curved surface.
Each section panel by said method moulding of the present invention need not manual correction, its segmentation rationally and launch accurately, guaranteed the accurate position of space die sinking line, guaranteed the rounding off of entity pier cap arc section space curved surface.Compared with prior art, can improve the Forming Quality of space curved surface greatly, improve the make efficiency of product and the material of minimizing blanking and decrease, be specially adapted to the processing of the streamlined template of hyperbolic.
The specific embodiment:
Below in conjunction with embodiment in detail the present invention is described in detail.
The forming method of the described hyperbolic streamlined bridge abutment moulding plate space surface of present embodiment, carry out as follows:
1. reasonably segmentation: in AutoCAD, utilize the principle of " with straight Dai Qu ", the whole 2750mm short transverse of pier cap arc section is divided into 14 parts, preceding from top to bottom 13 sections high 200mm, topmost high 150mm.
Contour point-score helps the simple and easy of the making of frock and calculation on Construction.Be up to 200mm and make that the maximum spacing between the arc string corresponding with it is 1.5mm, it has satisfied entity in complete approximation, helps the rounding off of entity space curved surface.
2. the segmentation of space curved surface flattens: the space basic size of utilizing each the segmentation curved surface that obtains in AutoCAD, in Pro/E, set up the space three-dimensional model, and each section curved surface that will set up is divided into 10000 parts, carries out refinement and flattens, and obtains accurate space curved surface expanded view.
3. the kneading of line transect: the formatted file that the expanded view among the Pro/E is changed into CAXA.According to the highest processing request, the border line transect of expanded view is reasonably mediated the curved surface expanded view that is optimized.
4. blanking: the surface chart that launches is input among the CAXA, the arc line transect of curved surface is mediated, and with curved surface in two, passed to the blanking of underwater plasma cutting machine.With the curved surface of each section in two, help guaranteeing the position of die sinking line, guarantee that arc section contacts with straight section to be no more than 2mm.
5. moulding: each section material that will descend is opened cut, and numbering is used the radius of three stone rollers by the circular arc of each segmentation curved surface correspondence, rolls arc, finishes the moulding of space curved surface.
6. the welding: according to from both sides to the order of centre, with each segment space curved surface welding fabrication on mold of forming, finish the making of space curved surface.