CN102513417A

CN102513417A - Rolling method of right cone frustum shell bodies

Info

Publication number: CN102513417A
Application number: CN2011103368647A
Authority: CN
Inventors: 王宗宝; 龚海涛; 马腾
Original assignee: Wuhan Yiye Steel Structure Co Ltd
Current assignee: Wuhan Yiye Steel Structure Co Ltd
Priority date: 2011-10-31
Filing date: 2011-10-31
Publication date: 2012-06-27
Anticipated expiration: 2031-10-31
Also published as: CN102513417B

Abstract

The invention relates to a rolling method of right cone frustum shell bodies. The rolling method comprises the following steps of: 1) before rolling, cutting a shell body into an unfolded-fan-shaped workpiece according to a design drawing, dividing the workpiece into 4-12 equal parts according to the length of each fan-shaped steel plate, and causing the length of each equal part to be subject to the standard that the workpiece rolls in parallel and does not to warp; 2) making roll arc sample plates R1 and R2, the radian of R1 is equal to the diameter of an upper opening of the fan-shaped workpiece, and the radian of R2 is equal to the diameter of a lower opening of the fan-shaped workpiece; during rolling the shell body, using the sample plates to check up the degree of circular curve of the upper opening and the lower opening; 3) during rolling the shell body, the lift angle Beta of one end of a three-roll plate bending machine is equal to 90 degrees minus Alpha, and Alpha is the degree of an angle of inclination of the shell body of a cone furnace; and 4) sequentially processing all shell bodies piecewise, keeping the rolling of each equal part and the upper roll shaft of the three-roll plate bending machine be a ray state, and rolling processing in parallel. The rolling method has strong operability, simple steps, convenience for checking up and high degree of accuracy, the damage of a crank shaft and the shell bodies is decreased, and the quality and efficiency are increased.

Description

The roller system method of normal cone platform shape housing

Technical field

The present invention relates to the making field of steel construction piece, concrete relevant with the roller system method of normal cone platform shape housing.

Background technology

Last furnace shell is divided into straight band and the awl band is partly formed, and straight band partly is the cylinder form, and the awl band partly just is being generally, handstand normal cone platform form.Body of heater awl band roller system partly is one important procedure during last furnace shell is made, and the quality quality after the roller system will directly have influence on itself and the docking of upper and lower band, and then influence the quality of furnace shell making.Traditional preparation method is that with the lifting shaft of coverboard osculum limit near veneer reeling machine one side, coverboard rolls from left to right back and forth, through the friction generates resistance of plate osculum limit and up-down, reduces the linear velocity on osculum limit, reaches and the intact purpose of Da Kou limit while roller.This method can produce huge frictional force in roller system process; Can cause damage to the veneer reeling machine lifting shaft, also can cause housing osculum limit severe crack, breach to occur, and be prone to produce distortion; After roller system is accomplished; The correction work amount is very big, so that influences housing final molding quality, finally also influences the quality of whole furnace shell.

Summary of the invention

In order to overcome the deficiency of prior art, the object of the present invention is to provide a kind of roller system method of normal cone platform shape housing, its manufacturing process is simple, reduces the damage of machinery and housing, improves housing fabricating quality and efficient.

To achieve these goals, technical scheme of the present invention is: the roller system method of normal cone platform shape housing, it comprises the steps:

1) require blanking to become to launch fan-shaped workpiece according to design drawing housing before the roller system, according to the length of every fan-shaped steel plate, it is divided into the 4-12 equal portions with the slate pencil or the line of ink marker again, the length of every equal portions is can guarantee that approximate parallel rolling can not produce distortion and be as the criterion;

2) make roller arc model R1 and R2, the radian of R1 equals fan-shaped workpiece back cut diameter, and the radian of R2 equals the lower port diameter of fan-shaped workpiece, uses the round curvature of upper and lower mouthful of model inspection during housing roller system;

3) during roller system housing, last roll shaft one end of three rolls plate bending machine certain angle beta that need rise, β=90 °-α, α is the inclination angle number of degrees of circular cone furnace shell;

4) with every housing segmental machining in certain sequence, the roller system of every equal portions will be held in the ray state with the last roll shaft of three rolls plate bending machine, parallel rolling processing;

The invention has the beneficial effects as follows: need not change existing equipment, workable, method step is simple, and inspection is convenient, and the degree of accuracy is high, implements easily, reduces the damage of veneer reeling machine lifting shaft and housing, improves housing fabricating quality and efficient.

Description of drawings

Fig. 1 is the side schematic view of the frustum of a cone;

Fig. 2 is the equal portions sketch map after the frustum of a cone fan out;

Fig. 3 is the roller system sketch map of workpiece;

Fig. 4 is the sketch map of roll shaft angle of elevation on the veneer reeling machine;

Fig. 5 is a roller arc model sketch map suitable for reading;

Fig. 6 is an end opening roller arc model sketch map;

Fig. 7 is a α angular templet sketch map;

Fig. 8 is that roller arc model, angular templet use sketch map.

Among the figure: 1-treats the fan-shaped workpiece of roller system, roll shaft on the 2-veneer reeling machine, 3-roller arc model, 4-angular templet.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

The invention discloses a kind of roller system method of normal cone platform shape housing, is example with the fan-shaped workpiece that divides six equal portions, and it comprises the steps:

1) as shown in Figure 2; Require blanking to become to launch fan-shaped workpiece 1 according to design drawing housing before the roller system; Again according to its length; With the slate pencil or the line of ink marker it is divided into six equal portions (putting on 1,2,3,6,5,4 from left to right by processing sequence respectively), the length of every equal portions is can guarantee that approximate parallel rolling can not produce distortion and be as the criterion;

2) like Fig. 5～shown in Figure 8, make two roller arc model 3-R1 and R2, the radian of R1 equals fan-shaped workpiece back cut diameter; The radian of R2 equals the lower port diameter of fan-shaped workpiece, makees a α angular templet 4 again, and α is the inclination angle number of degrees of circular cone furnace shell; To measure upper and lower mouthful round curvature during workpiece roller system with two radian models; Model remains the α angle, and the length of radian model will keep 2000mm, to guarantee the accuracy of roller arc;

3) as shown in Figure 4, during roller system arc plate, last roll shaft one end of three rolls plate bending machine certain angle that need rise.Angle: β=90 °-α (see figure 1) wherein, β is roll shaft angle of elevation on the veneer reeling machine, for the ease of grasping and operation; With roll shaft lifting height H=β/2 on the veneer reeling machine, unit calculates with mm, for example β=8 °; Roll shaft one end rising H=8mm/2, i.e. 4mm on the veneer reeling machine then.

4) every housing being pressed the number order segmental machining on the workpiece shown in Figure 2, is principle in the middle of behind the first both sides;

5) as shown in Figure 3, the roller system of every equal portions will be held in the ray state with the last roll shaft 2 of three rolls plate bending machine, and parallel rolling is processed, and can accomplish the roller system of normal cone platform shape housing.

Claims

1. the roller system method of normal cone platform shape housing, it is characterized in that: it comprises the steps:

4) with every housing segmental machining in certain sequence, the roller system of every equal portions will be held in the ray state with the last roll shaft of three rolls plate bending machine, parallel rolling processing.