Saddle-shaped curved surface rolling forming device

Abstract

The invention discloses a saddle-shaped curved surface rolling forming device, and belongs to the field of mechanical engineering. The device comprises a concave upper roller, two convex lower rollers, two stand column racks and an upper roller position adjusting mechanism, two worm gear lead screw lifters are connected through a coupler, the lower ends of two lifting lead screws are connected with the concave upper roller, and it is guaranteed that the axis of the concave upper roller is horizontal when the concave upper roller moves up and down. According to the device, the position of the concave upper roller is adjusted, the gap between the concave upper roller and the convex lower roller is controlled, a plate is extruded by the concave upper roller and the convex lower roller, uniform deformation is generated, bending is generated in the axial direction and the transverse direction, and then the double-curvature saddle-shaped curved surface part is obtained.

Description

TECHNICAL FIELD

[0001] The application discloses a saddle-shaped curved surface roller forming device and belongs to the mechanical engineering field. BACKGROUND

[0002] As one of the core structural parts in the fields of aerospace, ship, rail transit and building curtain wall, the saddle-shaped three-dimensional curved surface skin part needs to meet the strict requirements of high precision, high strength and light weight. The traditional process is mainly forming by a skin stretcher and a special die or a multi-point die. The skin stretcher and the multi-point die are expensive, and the design and manufacturing cycle of the die is long, which increases the money and time cost of equipment development. In addition, the aerospace, ship, rail transit and building curtain wall industries develop rapidly, and the demand for small batch and multi-variety customization is increasingly prominent. The traditional die processing method is difficult to meet the needs of industrial development. Therefore, the rapid and low-cost processing of the saddle-shaped curved surface part requires a cheaper and more universal forming device. SUMMARY

[0003] The application aims to provide a saddle-shaped curved surface roller forming device which can quickly and high-quality form a saddle-shaped curved surface part. The plate is placed between the concave upper roller and the convex lower roller. The concave upper roller moves downward to control the gap between the upper roller and the two lower rollers, uniformly extrudes the plate, and produces uniform deformation. The axial curvature radius of the plate is determined by the generatrix of the upper and lower rollers, and the transverse curvature radius of the plate is determined by the downward displacement of the concave upper roller. The effective control of the double curvature radius of the saddle-shaped curved surface part is realized, and finally the saddle-shaped curved surface part with the required size is obtained.

[0004] The above object of the application is achieved by the following technical scheme, which is described in combination with the drawings as follows: A saddle-shaped curved surface roller forming device mainly comprises a concave upper roller, two convex lower rollers, a column frame and an upper roller position adjusting mechanism. The generatrix of the concave upper roller, the generatrix of the convex lower roller I and the generatrix of the convex lower roller II are all circular arcs, and the circular arc radius of the concave upper roller 2 is slightly larger than the circular arc radius of the convex lower roller I 1a and the convex lower roller II 1b. The generatrix of the concave upper roller 2 and the convex lower roller I 1a and the convex lower roller II 1b can realize multi-point fine adjustment. The axial curvature of the plate is formed by the generatrix curvature of the concave upper roller, the convex lower roller I and the convex lower roller II, and the axial forming of the plate is realized. The transverse curvature of the plate is formed by adjusting the gap of the roll gap through the upward and downward movement of the concave upper roller, and the transverse forming of the plate is realized. Through the effective control of the double curvature radius of the saddle-shaped curved surface part, the double curvature saddle-shaped curved surface part with the required size is finally obtained.

[0005] A saddle-shaped curved surface roll forming device, wherein the upper roller position adjusting mechanism is composed of a worm screw lifter I, a worm screw lifter II, a shaft coupling and a rocking wheel, the rocking wheel is connected with the worm screw lifter I screw rod, the worm screw lifter I is connected with the worm screw lifter II through the shaft coupling, the concave upper roller is connected with the worm screw lifter I and the worm screw lifter II, and the up-down movement of the concave upper roller is realized, and the convex lower roller I and the convex lower roller II are connected with the stand column frame I and the stand column frame II.

[0006] A saddle-shaped curved surface roll forming device, wherein the upper roller position adjusting mechanism is composed of a worm screw lifter I, a worm screw lifter II, a shaft coupling and a rocking wheel, the rocking wheel is connected with the worm screw lifter I screw rod, the worm screw lifter I is connected with the worm screw lifter II through the shaft coupling, the concave upper roller is connected with the worm screw lifter I and the worm screw lifter II, and the up-down movement of the concave upper roller is realized, and the convex lower roller I and the convex lower roller II are connected with the stand column frame I and the stand column frame II.

[0007] A saddle-shaped curved surface roll forming device, wherein the convex lower roller I and the convex lower roller II are driving rollers, the concave upper roller is a driven roller, or the convex lower roller I, the convex lower roller II and the concave upper roller are all driving rollers.

[0008] Technical effects: the saddle-shaped curved surface roll forming device can realize the rapid and high-quality forming of the saddle-shaped curved surface part under the premise of low cost and low control difficulty, provides an effective saddle-shaped curved surface part forming equipment, and can effectively solve the defects of long mold design and manufacturing period and high price in the traditional saddle-shaped curved surface part forming, and is suitable for personalized generation requirements of small batch and rapid forming. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structure schematic diagram of a saddle-shaped curved surface roll forming device. Figure 2 It is a schematic diagram of the relative position of the concave upper roller and the convex lower roller before rolling. Figure 3 It is a schematic diagram of the relative position of the concave upper roller, the convex lower roller and the plate before rolling. Figure 4 It is a schematic diagram of the structure of the concave upper roller, the convex lower roller and the plate during the initial rolling process. Figure 5 It is a schematic diagram of the working state of the concave upper roller and the convex lower roller during the rolling process of the saddle-shaped curved surface part, and a schematic diagram of the double curvature forming process of the plate. Figure 6 It is a schematic diagram of the roll gap between the concave upper roller and the convex lower roller during the rolling process of the saddle-shaped curved surface part. Figure 7 It is a schematic diagram of the forming effect of the saddle-shaped curved surface part when the rolling is finished. Wherein: 1a - convex lower roller I; 1b - convex lower roller II; 2 - concave upper roller; 3a - column frame I; 3b - column frame II; 4a - worm screw lifter I; 4b - worm screw lifter II; 5 - coupling; 6 - rocking wheel. DETAILED DESCRIPTION

[0010] The specific content of the present application and its working process are specifically described below in combination with the drawings.

[0011] The present application provides a saddle-shaped curved surface roll forming device, Figure 1 The three-dimensional structure of the present application is shown in the figure, mainly including a concave upper roller 2, a convex lower roller I 1a, a convex lower roller II 1b, a column frame I 3a, a column frame II 3b and an upper roller position adjusting mechanism. The upper roller position adjusting mechanism is composed of a worm screw lifter I 4a, a worm screw lifter II 4b, a coupling 5 and a rocking wheel 6; the rocking wheel 6 is connected with the screw rod of the worm screw lifter I 4a, the worm screw lifter I 4a is connected with the worm screw lifter II 4b through the coupling 5, which ensures the synchronization of the rotation of the two worm screws and realizes the horizontal axis of the concave upper roller 2 when moving up and down; the worm screw lifter I 4a, the worm screw lifter II 4b, the convex lower roller I 1a and the convex lower roller II 1b are respectively connected with the column frame I 3a and the column frame II 3b; Figure 2 Before rolling, the relative position of the concave upper roller 2, the convex lower roller I 1a and the convex lower roller II 1b is shown in the figure, the generatrix of the concave upper roller 2, the generatrix of the convex lower roller I 1a and the generatrix of the convex lower roller II 1b are all circular arcs, and the circular arc radius of the concave upper roller 2 is slightly larger than the circular arc radius of the convex lower roller I 1a and the convex lower roller II 1b; the generatrix of the concave upper roller 2, the convex lower roller I 1a and the convex lower roller II 1b can realize multi-point fine adjustment. The convex lower roller I 1a and the convex lower roller II 1b are driving rollers, and the concave upper roller 2 is a driven roller; or the three rollers of the convex lower roller I 1a, the convex lower roller II 1b and the concave upper roller 2 are all driving rollers; Figure 3 Before rolling, the relative position of the concave upper roller 2, the convex lower roller I 1a and the convex lower roller II 1b is shown in the figure; Figure 4 When the rolling starts, the structure of the concave upper roller 2 moving down, the convex lower roller I 1a and the convex lower roller II 1b and the sheet metal is shown in the figure; Figure 5 During the rolling process of the saddle-shaped curved surface part, the working state of the concave upper roller 2, the convex lower roller I 1a and the convex lower roller II 1b is shown in the figure, and the sheet metal double curvature forming process is shown in the figure; Figure 6 During the rolling process of the saddle-shaped curved surface part, the rolling gap between the concave upper roller 2 and the convex lower roller I 1a and the convex lower roller II 1b is shown in the figure; Figure 7The figure shows the forming effect of the saddle-shaped curved surface part at the end of the roller pressing.

[0012] The axial curvature of the plate is formed by the generatrix curvature of the concave upper roller 2, the convex lower roller I 1a and the convex lower roller II 1b, and the axial forming of the plate is realized. The transverse curvature of the plate is formed by adjusting the gap between the rollers by moving the concave upper roller 2 up and down, and the transverse forming of the plate is realized. Through effective control of the double-curvature radius of the saddle-shaped curved surface part, the double-curvature saddle-shaped curved surface part with the required size is finally obtained.

[0013] The working process of the saddle-shaped curved surface roller pressing forming device is illustrated below. The plate is placed in the saddle-shaped curved surface roller pressing forming device, and the plate is placed on the convex lower roller I 1a and the convex lower roller II 1b. In the transverse feeding direction of the plate, one end of the plate is aligned with the rotation axis of the lower roller. The concave upper roller moves downward to extrude the middle plate, so that the plate reaches the expected thinning amount. When the transverse curvature radius of the saddle-shaped curved surface part is different, the thinning amount of the plate is different. By controlling the downward pressure of the concave upper roller 2, the deformation control of the curvature radius of the saddle-shaped curved surface part is realized. After the initial extrusion deformation of the plate, the concave upper roller 2 rotates clockwise, and the convex lower roller I 1a and the convex lower roller II 1b rotate counterclockwise, so that the continuous roller pressing deformation of the plate is realized. Until the roller pressing deformation of the entire plate is realized, the ideal saddle-shaped curved surface part forming effect is achieved, and the roller pressing is ended.

Claims

1. A saddle roll forming apparatus comprising: The concave upper roller (2), the convex lower roller I (1a), the convex lower roller II (1b), the column frame I (3a), the column frame II (3b) and the upper roller position adjusting mechanism; characterized in that the generatrix of the concave upper roller (2), the generatrix of the convex lower roller I (1a) and the generatrix of the convex lower roller II (1b) are all circular arcs, the radius of the circular arc of the concave upper roller (2) is slightly larger than the radius of the circular arc of the convex lower roller I (1a) and the convex lower roller II (1b); the generatrix of the concave upper roller (2) and the convex lower roller I (1a) and the convex lower roller II (1b) can realize multi-point fine adjustment.

2. A saddle roll forming apparatus according to claim 1, wherein The upper roller position adjusting mechanism is composed of a worm screw elevator I (4a), a worm screw elevator II (4b), a shaft coupling (5) and a hand wheel (6), the hand wheel (6) is connected with the screw rod of the worm screw elevator I (4a), the worm screw elevator I (4a) and the worm screw elevator II (4b) are connected through the shaft coupling (5), the concave upper roller (2) is connected with the worm screw elevator I (4a) and the worm screw elevator II (4b), so as to realize the up-down movement of the concave upper roller (2); the convex lower roller I (1a) and the convex lower roller II (1b) are connected with the column frame I (3a) and the column frame II (3b).

3. A saddle roll forming apparatus according to claim 1, wherein The upper roller position adjusting mechanism is an electric or manual structure, and rotating the hand wheel (6) can realize the up-down movement of the concave upper roller (2).

4. A saddle roll forming apparatus according to claim 1, wherein The convex lower roller I (1a) and the convex lower roller II (1b) are driving rollers, and the concave upper roller (2) is a driven roller; or the convex lower roller I (1a), the convex lower roller II (1b) and the concave upper roller (2) are all driving rollers.

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