CN101036926A - Huoluo hemisphere type pressure head base body of multi-pressure-head sheet forming device - Google Patents

Abstract

The invention relates to a detachable hemisphere type base body of multiple pressure head board forming device, including a pillar (8), a pressure head (6); one end of the pillar (8) connects to the frame, the other end connects to the pressure head (6); the pressure head (6) is hemispheroid, the working face of the pressure head (6) is plane; a concave sphere support seat (7) is provided between the pillar (8) and the pressure head (6), the sphere portion of the pressure head (6) detachable connects to the concave sphere support seat (7). The pressure head (6) of the base body is not easy to incline when working, the pressing board surface is smooth with little impression.

Description

The active hemispherical indenter basic body of the multi-indenter plate forming device

technical field

The present invention relates to forming processing equipment for large-scale three-dimensional curved plate components, in particular to a multi-press plate forming device, such as a forming processing equipment for hull panels with arbitrary curved shapes, especially the basic body of the multi-press plate forming device.

Background technique

For some plate components that need to be pressed and formed by an integral mold, multi-head plate forming devices have been used to replace expensive mold processing, such as the multi-point plate forming press developed in China. Existing multi-head plate forming device includes: a movable upper frame, a plurality of upper basic bodies connected with the upper frame, a lower frame, and a plurality of lower basic bodies connected with the lower frame; each basic body includes a pillar, a pressure head , the pillar is connected with the frame, and the indenter is connected with the pillar.

In the basic body of the existing multi-head plate forming device, the working surface of the pressure head is divided into a convex surface and a plane surface.

The multi-indenter plate forming device with a convex working surface of the indenter, also known as a multi-point plate forming device, has the disadvantage of its basic body: because the indenter mold is in a convex shape, when the mold and the plate are pressed and formed, the indenter and the plate The plate is in point contact. At this time, the concentrated force is easy to cause indentation on the plate; in addition, when processing curved plates, when some parts of the plate are inclined (as shown in Figure 9), the working surface of the indenter is convex. , the contact point between the upper basic body indenter 6 and the plate 18 and the contact point between the lower basic body indenter 6 and the plate 18 are not at the same point, and it is easy to cause local concave-convex indentation deformation of the plate 18, so it is difficult to meet the needs of large-scale hulls. Shipbuilding quality requirements for smooth outer plates and small indentations.

The working surface of the indenter is a plane basic body, such as the basic body disclosed in Figure 3-61 on page 141 of "Hull Construction Technology" (People's Communications Press, first edition in December, 1980), as shown in Figure 10, the basic body The working surface of the indenter 6 is a plane, and the indenter 6 and the pillar 8 are connected with the spherical rod support seat at one end of the indenter 8 through the concave ball socket on the bottom surface of the indenter. The disadvantages of this basic body are: 1. Due to the high center of gravity, the indenter is prone to be in an unstable state, that is, the indenter is always inclined; Make adjustment control complicated, cause inconvenience.

Contents of the invention

The technical problem to be solved by the present invention is to provide a basic body of movable hemispherical indenter of a multi-indenter plate forming device, the indenter of the basic body is not easy to tilt when working, and the surface of the extruded plate is smooth and has small indentation.

The technical solution adopted by the present invention to solve the problems of the technologies described above is:

The active hemispherical indenter basic body of the multi-indenter plate forming device includes a pillar and an indenter; one end of the pillar is connected to the frame, and the other end is connected to the indenter; the indenter is a hemisphere, and the working surface of the indenter is a plane; A concave spherical support seat is arranged between the pillar and the indenter, and the spherical part of the indenter is flexibly connected with the concave spherical support seat.

In the above solution, a spring is provided between the indenter and the pillar, and the spherical surface of the indenter is pressed on the concave spherical support seat through the spring.

In the above scheme, the basic body is the lower basic body, and the lower basic body also includes a supporting screw rod and a power mechanism for driving the supporting screw rod to rotate; the pillar is a hollow pillar; the lower end of the pillar is fixedly provided with a supporting nut that cooperates with the supporting screw rod, and the supporting screw rod The hollow pillar is inserted through the support nut; the support screw rod is rotatably connected with the bottom surface of the lower frame; the concave spherical support seat is arranged on the upper end of the pillar.

In the above solution, a displacement sensor is provided between the pillar and the supporting screw.

In the above solution, the spring is a tension spring, and the two ends of the spring are respectively connected with the pressure head and the support.

In the above scheme, the spring is a compression spring; a connecting rod and a perforated baffle are also provided between the pressure head and the pillar; the perforated baffle is fixedly connected to the pillar (8); one end of the connecting rod is connected with the pressure head, and the other end is worn Through the perforated baffle; the spring is disposed between the perforated baffle and the link passing through the perforated baffle portion.

In the above solution, the displacement sensor is a magnetic displacement sensor, which includes a magnetic induction telescopic rod and a magnetic ring, the magnetic induction telescopic rod is fixedly connected to the lower end of the pillar, the magnetic ring is fixedly connected to the support screw, and the magnetic induction telescopic rod passes through the center of the magnetic ring .

In the above solution, the supporting screw is a hollow screw, the magnetic ring is arranged on the top of the supporting screw, and a part of the magnetic induction telescopic rod is inserted into the hollow supporting screw.

Compared with the previous multi-point mold, the present invention has the following advantages:

1. When the plate is pressed and bent, it is not a point contact, but a surface contact with a relatively uniform pressure, so the indentation of the plate is significantly reduced;

2. Regardless of the inclination and rotation of the active hemispherical indenter with the plate, the center of the hemisphere of the upper basic body and the center of the hemisphere of the lower basic body are on the same vertical line, and they will not change even when bending the plate. It will cause the ball center of the indenter to shift, and naturally it will not produce local concave-convex indentation deformation like multi-point forming;

3. When adjusting the inclination state of the plate processing surface, the height of the center of the active hemispherical indenter will not change, which is beneficial to the calculation, setting and adjustment of the height of the basic body;

4. The center of gravity of the active hemispherical indenter is always within the support surface. In addition, the spherical surface of the indenter is pressed on the support by a spring, so that the indenter is always in a stable state, will not tilt arbitrarily, and is easy to operate.

Description of drawings

Fig. 1 is a front view of a multi-head plate forming device with a pressure head mechanism of the present invention

Fig. 2 is a side view of the multi-head plate forming device with the pressure head mechanism of the present invention

Fig. 3 is the structural representation of upper basic body embodiment

Fig. 4 is the structural representation of lower basic body embodiment

Figures 5, 6, and 7 are structural schematic diagrams of several connection methods between the pressure head and the pillar

Fig. 8 is a schematic diagram of the working state of the basic body indenter of the present invention

Figure 9 is a schematic diagram of the working state of the basic body with the existing indenter working surface as a convex surface

Figure 10 is a schematic diagram of the basic structure of the existing indenter working surface as a plane

In the figure: 1 upper frame, 2 upper basic body, 3 lower frame, 4 lower basic body, 5 spring, 6 pressure head, 7 concave spherical support seat, 8 pillar, 9 lifting lug, 10 oil cylinder, 11 support nut, 12 Support screw, 13 power mechanism, 14 magnetic induction telescopic rod, 15 sensor magnetic ring, 16 perforated baffle plate, 17 connecting rod, 18 plate.

Detailed ways

As shown in Figures 1 and 2, the multi-head plate forming device with the basic body of the present invention includes: an upper frame 1 that can move downwards, a plurality of upper basic bodies 2 connected to the bottom of the upper frame, a lower frame 3, A plurality of lower basic bodies 4 connected with the upper part of the lower frame. The processing plate 18 is located between the upper basic body 2 and the lower basic body 4 . Each basic body comprises pillar 8, pressure head 6, and one end of pillar 8 is connected with frame, and the other end is connected with pressure head 6; Pressure head 6 is a hemisphere, and the working surface of pressure head 6 is plane; The connecting end is a concave spherical support seat 7, and the spherical part of the indenter 6 is flexibly connected with the concave spherical support seat 7.

As shown in Figure 3, the basic body is the upper basic body 2, and the upper basic body 2 includes an oil cylinder 10, a pillar 8, a concave spherical support seat 7, and a pressure head 6; the upper end of the oil cylinder 10 and the bottom surface of the upper frame 1 pass through the lifting lug 9, the lower end of the oil cylinder 10 is connected to the pillar 8 through the lifting lug 9, and the concave spherical support seat 7 is arranged at the lower end of the pillar 8.

As shown in Figure 4, the basic body is the lower basic body 4, and the lower basic body 4 includes a pillar 8, a concave spherical support seat 7, a pressure head 6, a supporting screw 12, a supporting nut 11 matched with the supporting screw, for driving The power mechanism 13 that supports the rotation of the screw rod 12. The power mechanism 13 is an oil hydraulic motor or an electric machine. The pillar 8 is a hollow pillar. Support nut 11 is arranged on the lower end of pillar 8, and support screw rod 12 is inserted into pillar 8 through support nut 11;

Inside the hollow pillar, a displacement sensor is arranged between the pillar 8 and the supporting screw 12 . The displacement sensor is a magnetic displacement sensor, which includes a magnetic induction telescopic rod 14 and a magnetic ring 15 , and the magnetic induction telescopic rod 14 is fixedly connected to the upper end of the pillar 8 . The supporting screw 12 is a hollow screw, the magnetic ring 15 is arranged on the top of the supporting screw 12 , and a part of the magnetic induction telescopic rod 14 is inserted into the hollow supporting screw 12 .

As shown in Figures 5, 6, and 7, several connection modes between the indenter 6 and the pillar 8, a spring 5 is arranged between the indenter 6 and the pillar 8, and the spherical surface of the indenter 6 is pressed on the basic body by the spring 5.

As shown in Figures 5 and 6, the spring 5 is a tension spring, and the two ends of the spring 5 are connected with the pressure head 6 and the pillar 8 respectively.

As shown in Figure 7, spring 5 is stage clip; Also be provided with connecting rod 17, banded baffle 16 between pressure head 6 and pillar 8; Banded baffle 16 is fixedly connected with pillar 8; One end of connecting rod 17 is connected with The pressure head 6 is connected, and the other end passes through the perforated baffle 16; the spring 5 is sleeved on the connecting rod 17, and is between the perforated baffle 16 and the connecting rod 17 passing through the perforated baffle 16.

The working principle of the multi-pressure head plate forming device with the pressure head mechanism of the present invention is:

The pressure head 6 of the lower basic body 4 is driven by the respective power mechanism 13 to move the lifting screw, and according to the measurement of the displacement sensor, the working surface of the pressure head of the lower basic body 4 is formed into a required curved surface shape. After that, the to-be-processed The sheet material 18 is placed on the indenter 6 of the lower basic body 4 that has formed the curved surface. Drive the oil cylinder 10 of the upper basic body 2 to press down the pressure head 6 of the upper basic body 2, and the plate 18 is deformed under force between the pressure heads 6 of the upper and lower basic bodies to obtain the required curved surface shape. After the forming of a section of plate is completed, when the next section is formed, the indenter of the upper basic body 2 is raised, and the indenter of the lower basic body 4 is adjusted again to form the required and new curved surface shape, and then the bending is performed Forming, reciprocating the above operations until the forming process of the entire sheet is completed.

As shown in Figure 8, no matter how the movable hemispherical indenter rotates with the inclination of the plate 18, the center of the indenter 6 hemispheres of the upper basic body and the center of the indenter 6 hemispheres of the lower basic body are all on the same vertical line The upper correspondence remains unchanged, even when the plate is bent, the ball center of the indenter will not be misaligned.

Claims (8)

1, the active hemispheric pressure head element body of a multiple pressure sheet material forming device, it comprises pillar (8), pressure head (6); One end of pillar (8) is connected with framework, and the other end is connected with pressure head (6), it is characterized in that: pressure head (6) is a hemisphere, and the working face of pressure head (6) is the plane; Be provided with spill spherical support seat (7) between pillar (8) and the pressure head (6), the land portions of pressure head (6) and active connection of spill spherical support seat (7).

2, element body as claimed in claim 1 is characterized in that: be provided with spring (5) between pressure head (6) and the pillar (8), the sphere of pressure head (6) is pressed on the spill spherical support seat (7) by spring (5).

3, element body as claimed in claim 1, it is characterized in that: it is following element body (4), following element body (4) also comprises studdle (12), with the supporting holding nut (11) of studdle, be used to drive the actuating unit (13) that studdle (19) rotates; Pillar (8) is a Hollow Pillar; Holding nut (11) is fixedly installed on pillar (8) lower end, and studdle (12) passes holding nut (11) and inserts pillar (8); Studdle (12) is rotationally connected with the bottom surface of underframe (3); Spill spherical support seat (7) is arranged on pillar (8) upper end.

4, element body as claimed in claim 3 is characterized in that: be provided with displacement transducer between pillar (8) and the studdle (12).

5, element body as claimed in claim 2 is characterized in that: spring (5) is extension spring, and the two ends of spring (5) are connected with pressure head (6), pillar (8) respectively.

6, element body as claimed in claim 2 is characterized in that: spring (5) is a stage clip; Also be provided with connecting rod (17), baffle plate with holes (16) between pressure head (6) and the pillar (8); Baffle plate with holes (16) is fixedlyed connected with pillar (8); One end of connecting rod (17) is connected with pressure head (6), and the other end passes baffle plate with holes (16); Spring (5) is enclosed within on the connecting rod (17), and is in baffle plate with holes (16) and passes between the part connecting rod (17) of baffle plate with holes (16).。

7, element body as claimed in claim 4, it is characterized in that: displacement transducer is the mangneto displacement transducer, this sensor comprises magnetic induction expansion link (14) and magnet ring (15), magnetic induction expansion link (14) is fixedlyed connected with the upper end of pillar (8), magnet ring (15) is fixedlyed connected with studdle (12), and magnetic induction expansion link (14) passes from the center of magnet ring (15).

8, element body as claimed in claim 7 is characterized in that: studdle (12) is a cored screw, and magnet ring (15) is arranged on the top of studdle (12), and the part of magnetic induction expansion link (14) is inserted in the hollow studdle (12).

Images