CN104475917A

CN104475917A - Blanking method of skin for generator stator base

Info

Publication number: CN104475917A
Application number: CN201410718509.XA
Authority: CN
Inventors: 梁洪涛; 王国海; 谢玉增; 赵永昌; 张亮; 马健; 杨华锋
Original assignee: Harbin Electric Machinery Co Ltd
Current assignee: Harbin Electric Machinery Co Ltd
Priority date: 2014-12-01
Filing date: 2014-12-01
Publication date: 2015-04-01

Abstract

The invention provides a blanking method of skin for a generator stator base. During blanking, first edges, needing be perforated and parallel to a rolling direction, of the skin is cut with CNC (computer numerical control) flame, second edges perpendicular to the rolling direction are reserved, and a steel sheet being rolled is made continual along the rolling direction. The method has the advantages that the method adapts to forming by universal rolling machinery, no distortion occurs, cut lines perpendicular to the rolling direction are linear after rolling forming, a universal movable guide rail can be used to assist in cutting, the requirement for cutting precision is met, the problem of the prior art that an inner ring sheet of the generator stator base is mistakenly cut is avoided, and cleaning is facilitated.

Description

Electricity generator stator stand crust blanking forming method

Technical field: the present invention relates to a kind of electricity generator stator stand crust blanking forming method.

Background technology: electricity generator stator stand crust is cylindrical structure, employing roll extrusion is mechanical-moulded, this universal roll extrusion machinery can adjust rolling radius according to demand, adapt to the demand of generator unit stator many sizes, significantly can reduce frock to drop into, but this universal roll extrusion machinery leans on the relative position of adjustment three rollers to adjust rolling radius, rolled steel plate will reserve boot segment, and rolled steel plate is wanted along roll extrusion direction continuously, then there will be torsional deformation if any interruption; For meeting the requirements such as hydro-generator ventilation cooling, electricity generator stator stand crust needs a lot of hole, for adapting to the feature of universal roll extrusion machinery, conventional art all adopts the method for cutting hole again after electricity generator stator stand welding fabrication, column type electricity generator stator stand crust adopt Manual flame cutting method to construct, dimensional accuracy is difficult to ensure, and Manual flame cutting also can cause cutting electricity generator stator stand inner ring plate problem by mistake, gas flame cuttiug splashings enter in electricity generator stator stand and are not easy cleaning, and cause the accident hidden danger.

Summary of the invention: the invention provides a kind of electricity generator stator stand crust blanking forming method, the edge consistent with roll extrusion direction of required perforate on NC Flame Cutting all out frames crust is first adopted during blanking, retain the edge vertical with roll extrusion direction, make rolled steel plate continuous along roll extrusion direction; Universal roll extrusion mechanical work can be adapted to be shaped, there will not be torsional deformation; After roll forming, the line of cut perpendicular to roll extrusion direction is rectilinear form, can use the auxiliary cutting of universal moving guide rail, namely cutting accuracy requirement is reached, turn avoid conventional art cutting electricity generator stator stand inner ring plate problem by mistake, facilitate cleaning work, eliminate the hidden danger that causes the accident.

Technical scheme of the present invention is: a kind of electricity generator stator stand crust blanking forming method, first adopt first edge consistent with roll extrusion direction of required perforate on NC Flame Cutting all out frames crust during blanking, retain second edge vertical with roll extrusion direction; After adopting roll extrusion mechanical work shaping, then the second edge that cutting is vertical with roll extrusion direction, the clout at required perforate position is departed from; By length dimension Linear cut, boot segment clout is departed from.

Technique effect: owing to first adopting first edge consistent with roll extrusion direction of required perforate on NC Flame Cutting all out frames crust during blanking, retain second edge vertical with roll extrusion direction, make rolled steel plate continuous along roll extrusion direction; Universal roll extrusion mechanical work can be adapted to be shaped, there will not be torsional deformation; After roll forming, the line of cut perpendicular to roll extrusion direction is rectilinear form, can use the auxiliary cutting of universal moving guide rail, namely cutting accuracy requirement is reached, turn avoid conventional art cutting electricity generator stator stand inner ring plate problem by mistake, facilitate cleaning work, eliminate the hidden danger that causes the accident.

Accompanying drawing illustrates:

Fig. 1 is blanking schematic diagram before a kind of typical apply roll extrusion of the present invention.

Fig. 2 is schematic diagram after a kind of typical apply roll extrusion of the present invention.

Fig. 3 is schematic diagram after a kind of typical apply of the present invention is shaped.

Detailed description of the invention:

As shown in Figure 1, a kind of a kind of typical apply of electricity generator stator stand crust blanking forming method, this electricity generator stator stand crust has four holes, first adopt first edge 4 consistent with roll extrusion direction 3 of required perforate 2 on NC Flame Cutting all out frames crust 1 during blanking, retain second edge 5 vertical with roll extrusion direction 3; Owing to first adopting first edge consistent with roll extrusion direction of required perforate on NC Flame Cutting all out frames crust during blanking, retain second edge vertical with roll extrusion direction, make rolled steel plate continuous along roll extrusion direction; The operation of universal roller tool can be adapted to be shaped, there will not be torsional deformation;

As shown in Figure 2, after adopting roll extrusion mechanical work shaping, then the second edge 5 that cutting is vertical with roll extrusion direction 3, the clout 6 at required perforate 2 position is departed from; Cut by length dimension line 7, boot segment clout 8 is departed from, be straight line line style perpendicular to roll extrusion direction line of cut, the auxiliary cutting of universal moving guide rail can be used, namely cutting accuracy requirement is reached, turn avoid conventional art cutting electricity generator stator stand inner ring plate problem by mistake, facilitate cleaning work, eliminate the hidden danger that causes the accident; Final out frame crust 1 as shown in Figure 3.

Claims

1. an electricity generator stator stand crust blanking forming method, it is characterized in that: first edge (4) consistent with roll extrusion direction (3) first adopting NC Flame Cutting all out frames crust (1) upper required perforate (2) during blanking, retains second edge (5) vertical with roll extrusion direction (3); After adopting roll extrusion mechanical work shaping, then the second edge (5) that cutting is vertical with roll extrusion direction (3), the clout (6) at required perforate (2) position is departed from; By length dimension line (7) cutting, boot segment clout (8) is departed from.