A thin-walled part heating roller pressing shaping mechanism and shaping method thereof

Abstract

The invention discloses a thin-walled heating roller shaping mechanism and a shaping method thereof. The shaping mechanism comprises a moving mechanism, a clamping mechanism and a heating shaping mechanism. The moving mechanism comprises a moving block with a degree of freedom of movement along the x-axis and the y-axis, and a rotating table with a degree of freedom of rotation around the z-axis installed on the top of the moving block; the clamping mechanism is installed on the rotating table and has a pair of mounting seats that can be close to or away from each other; two shells of the heating shaping mechanism are respectively installed on two mounting seats, and the clamping mechanism is used to realize the clamping of the thin-walled workpiece to be shaped by two roller heads; one of the roller heads is driven to rotate by a driving mechanism on the shell, and the coil in the roller head generates heat when an alternating current is passed through it, so as to realize the heating shaping of the thin-walled workpiece; in addition, the heating shaping mechanism adapts to the concave and convex surface of the thin-walled workpiece through a spring; when working, the shaping mechanism can move with the surface of the thin-walled workpiece. The invention has strong versatility and is suitable for the heating roller shaping of thin-walled workpieces of different shapes.

Description

Technical Field

[0001] The invention relates to thin-walled workpiece processing, in particular to a thin-walled workpiece heating roller pressing shaping mechanism and a shaping method thereof. Background Art

[0002] Thin-walled parts are used in the fields of aviation, automobiles, etc., which can save materials, reduce costs, and reduce the weight of the overall structure. Affected by factors such as cutting force and heat, thin-walled parts are very easy to deform during processing, and residual stress is also easily generated, affecting the accuracy and stability of the parts. Therefore, the processed thin-walled parts need to be shaped. At present, the mainstream thin-walled parts shaping method is stamping shaping, which requires molds for thin-walled parts of different shapes, has poor versatility and high cost. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a heating roller shaping mechanism and shaping method thereof that can adapt to thin-walled parts of different shapes.

[0004] Technical solution: A thin-walled workpiece heating roller shaping mechanism of the present invention comprises a moving mechanism, a clamping mechanism and a heating shaping mechanism; the moving mechanism comprises a moving block with the freedom of movement along the x-axis and the y-axis, a rotating table is installed on the top of the moving block, and the rotating table has the freedom of rotation around the z-axis; the clamping mechanism is installed on the rotating table, and the clamping mechanism has a pair of mounting seats that can move closer to or farther away from each other; the heating shaping mechanism comprises a shaping shell, a shell cover and a fixed plate, each of which is connected to the two mounting seats through a rotating fixed shaft, and the two shaping shells are connected to the two mounting seats through a rotating fixed shaft, and the fixed plate is connected to the mounting seat. The seat is fixedly connected by a first fixing rod, and the shell cover and the shaping shell are fixedly connected by a second fixing rod; a roller pressure head is rotatably arranged on the shaping shell, and the two roller pressure heads cooperate to clamp the thin-walled workpiece to be shaped; a coil is arranged in one of the roller pressure heads, and when an alternating current is passed through the coil, the roller pressure head generates heat and transfers the heat to the thin-walled workpiece to be shaped in contact with it, and the roller pressure head is driven to rotate by a driving mechanism arranged in the corresponding shaping shell; after the roller pressure head is pressurized, the shaping shell rotates relative to the mounting seat; a spring is connected between the first fixing rod and the second fixing rod to limit the rotation angle of the shaping shell.

[0005] Furthermore, the other roller pressing head is driven to move by a displacement mechanism arranged in the corresponding shaping shell to adjust the distance between the two roller pressing heads.

[0006] Furthermore, the displacement mechanism includes an upper slider slidably set in the shell cover guide groove and a lower slider slidably set in the internal guide groove of the shaping shell. An adjusting screw is provided on the shaping shell, and the adjusting screw is threadedly connected to the lower slider for driving the lower slider to move; another roller head is connected to the upper slider and the lower slider.

[0007] Furthermore, the driving mechanism includes a rotating motor installed on the outer wall of the shaping shell, a worm is installed at the output end of the rotating motor, the worm drives the worm wheel meshing with it to rotate, and the roller pressing head is connected to the worm wheel.

[0008] Furthermore, the moving mechanism also includes a rectangular frame, and horizontal guide grooves are arranged on all four sides of the inner wall of the frame. The relative horizontal guide grooves are of the same height, and a slider is slidably arranged in each horizontal guide groove. The sliders relative to each other are connected by at least two guide rods; adjacent horizontal guide grooves are of different heights to avoid mutual interference of the guide rods; and each guide rod passes through the moving block.

[0009] Furthermore, the frame is a centrally symmetrical square structure.

[0010] Furthermore, the clamping mechanism includes two screw blocks and a fixed table fixed on the rotating table, a screw is rotatably arranged on the fixed table, and the screw is driven to rotate by a screw motor arranged at the outer end of the fixed table; the screw has a front and a rear part with different thread rotation directions, and the two screw blocks are respectively threadedly connected to the front and the rear part of the screw, and can move along the guide groove of the fixed table; the screw block serves as the mounting seat.

[0011] Furthermore, the centers of the fixed platform and the rotating platform are aligned; and the boundary between the front and rear parts of the lead screw is located at the center of the fixed platform.

[0012] Furthermore, the heating power supply of the coil is installed on the outside of the shaping shell corresponding to the other rolling head.

[0013] The shaping method of the thin-walled workpiece heating roller shaping mechanism described in the present invention comprises: using a clamp to pre-fix the thin-walled workpiece to be shaped above the thin-walled workpiece heating roller shaping mechanism; two mounting seats are close to each other so that the two roller heads clamp the thin-walled workpiece to be shaped, and the corresponding roller heads are driven to rotate by a driving mechanism, and the coil is energized to heat the roller heads; the roller heads drive the heating shaping mechanism by friction with the thin-walled workpiece to be shaped, and the thin-walled workpiece to be shaped drives the other roller head to rotate by friction to achieve heating shaping of both sides of the thin-walled workpiece; the heating shaping mechanism drives the clamping mechanism, and then drives the moving block to move along with the surface of the thin-walled workpiece to be shaped.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0015] (1) The present invention can adapt to thin-walled parts of different shapes through the moving mechanism, clamping mechanism and heating shaping mechanism, has strong versatility and improves the convenience of shaping thin-walled parts.

[0016] (2) The present invention uses a driving mechanism (rotating motor) to rotate a roller head, which becomes the power source of the moving mechanism and drives the other roller head to rotate at the same time. The coil is heated by a heating power supply, and the structure is simple.

[0017] (3) After the thin-walled workpiece is fixed by an external clamp, the moving mechanism, clamping mechanism, and heating and shaping mechanism are located below the thin-walled workpiece. Only the roller head in the heating and shaping mechanism is in contact with the thin-walled workpiece. The weight of the thin-walled workpiece will not be transferred to the heating and shaping mechanism, reducing the possibility of deformation of the lowest moving mechanism, making the selection of moving mechanism materials simpler and the moving mechanism more reliable.

[0018] (4) The present invention utilizes a spring to allow the roller head to float, thereby achieving adaptation to different surface irregularities of thin-walled parts and further improving the versatility of the shaping mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a heating roller pressing and shaping mechanism for thin-walled parts provided in an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of a moving mechanism and a clamping mechanism in an embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of a heating and shaping mechanism in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of coil heating in an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the matching structure of the two roller pressure heads and the thin-walled workpiece to be shaped in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Attached Figures 1 to 5 The reference numerals in the figures are as follows:

[0026] 1. Frame; 2. Slider; 3. Guide rod; 4. Fixed table; 5. Screw block; 6. First fixed rod; 7. Spring; 8. Fixed plate; 9. Screw; 10. Roller head; 11. Rotating fixed shaft; 12. Rotating motor; 13. Adjusting screw; 14. Second fixed rod; 15. Rotating table; 16. Screw motor; 17. Moving block; 18-1 / 18-2, Shell cover; 19. Worm gear; 20. Worm; 21-1 / 21-2, Shaping shell; 22. Upper slider; 23. Heating power supply; 24. Lower slider; 25. Coil; 26. Thin-walled part to be shaped.

[0027] like Figures 1 to 5 As shown, an embodiment of the present invention provides a thin-walled workpiece heating rolling shaping mechanism, including a moving mechanism, a clamping mechanism and a heating shaping mechanism.

[0028] The moving mechanism comprises a frame 1, a rotating platform 15 and a moving block 17, and the frame 1 is rectangular.

[0029] Horizontal guide grooves are arranged on all four sides of the inner wall of the frame 1. The relative horizontal guide grooves are of equal height. Slide blocks 2 are arranged in each horizontal guide groove. The two relative slide blocks 2 are connected by two guide rods 3. Each guide rod 3 passes through the moving block 17. In order to avoid mutual interference of the guide rods 3, the adjacent horizontal guide grooves are of different heights. Figure 2 As shown, the slider 2 includes a pair of sliders 2-1 and another pair of sliders 2-2, wherein the horizontal guide grooves of the sliders 2-1 are higher than the horizontal guide grooves of the sliders 2-2.

[0030] The moving block 17 has a hole in the center, and the rotating platform 15 has a rotating shaft at the bottom. The rotating shaft is rotatably arranged in the center hole of the moving block 17 , so that the rotating platform 15 can rotate relative to the moving block 17 .

[0031] In order for the moving block 17 to carry the remaining mechanisms (clamping mechanism, heating and shaping mechanism) and move with thin-walled parts of different shapes or even circular shapes, the moving block 17 needs a sufficient moving range. In this embodiment, the frame 1 is configured as a centrally symmetrical square structure.

[0032] The working mode of the moving mechanism is: the rotating table 15 rotates under force, and the moving block 17 connected thereto is subjected to force. After the moving block 17 is subjected to force, a force is applied to the guide rod 3, and the guide rod 3 applies a force to the slider 2. After the slider 2 is subjected to force, it moves along the corresponding horizontal guide groove, and finally the rotating table 15 is realized with three degrees of freedom, including the degrees of freedom of movement along the x-axis and the y-axis and the degree of freedom of rotation around the z-axis.

[0033] like Figure 2 As shown, the clamping mechanism includes a fixed platform 4, a lead screw 9, a lead screw motor 16 and two lead screw blocks 5, wherein the two lead screw blocks 5 are lead screw block 5-1 and lead screw block 5-2. The fixed platform 4 is fastened to the rotating platform 15 by bolts, and the centers of the fixed platform 4 and the rotating platform 15 are aligned. A lead screw 9 is rotatably arranged on the fixed platform 4, and the lead screw 9 is driven to rotate by a lead screw motor 16 arranged at the outer end of the fixed platform 4.

[0034] The lead screw 9 has a front portion and a rear portion with different thread directions, and the boundary between the front portion and the rear portion is located at the center of the fixed platform 4. Two lead screw blocks 5 are respectively threadedly connected to the front portion and the rear portion of the lead screw 9 and can move along the guide groove on the fixed platform 4.

[0035] The clamping mechanism works in the following way: the lead screw motor 16 rotates, driving the lead screw 9 to rotate, so that the two lead screw blocks 5 can move closer to or farther from each other.

[0036] like Figure 3As shown, the heating and shaping mechanism includes two shaping shells, shell covers, fixed plates 8 and roller heads 10. The two shaping shells in the figure are respectively shaping shell 21-1 and shaping shell 21-2, the two shell covers are respectively shell cover 18-1 and shell cover 18-2, the two fixed plates 8 are respectively fixed plate 8-1 and fixed plate 8-2, and the two roller heads 10 are respectively roller head 10-1 and roller head 10-2.

[0037] The two shaping shells are rotatably connected to the two screw blocks 5 through the rotating fixed shafts 11, respectively, so that the shaping shells can rotate relative to the screw blocks 5. The upper end of the rotating fixed shaft 11 passes through the shell cover and is fixedly connected to the fixed plate 8 through threads. The first fixed rod 6 is fixedly connected to the fixed plate 8 and the screw block 5 through threads at the upper and lower ends, respectively, and the second fixed rod 14 is fixedly connected to the shell cover and the shaping shell through threads at the upper and lower ends. A roller pressure head 10 is rotatably arranged on the shaping shell, and the two roller pressure heads 10 cooperate to clamp the thin-walled parts 26 to be shaped. After the roller pressure heads 10 are compressed, the shaping shell rotates relative to the screw block 5. The first fixed rod 6 and the second fixed rod 14 pass through the circles at both ends of the spring 7 for variable distance connection, respectively, to limit the rotation angle of the shaping shell, so that the roller pressure head 10 can adapt to the concave and convex surfaces of different thin-walled parts.

[0038] The roller head 10 is provided with a coil 25, combined with Figure 4 When the coil 25 is passed through an alternating current, an alternating magnetic field is generated, and eddy currents are generated in the roller head 10, causing the roller head 10 to heat up. The heat of the roller head 10 is transferred to the thin-walled part 26 to be shaped in contact with it, thereby achieving heating and shaping of the thin-walled part, and improving processing efficiency and quality. At the same time, the roller head 10-1 is driven to rotate by a driving mechanism set in the shaping shell 21-1. Specifically,

[0039] The driving mechanism includes a rotating motor 12 installed on the outer wall of the shaping shell 21-1, a worm 20 is installed at the output end of the rotating motor 12, the worm 20 extends into the shaping shell 21-1, a worm wheel 19 is rotatably arranged inside the shaping shell 21-1, the worm 20 is meshed with the worm wheel 19, and the roller head 10-1 is connected to the worm wheel 19. The rotating motor 12 drives the worm 20 to rotate, so that the worm wheel 19 rotates, and then the roller head 10-1 rotates.

[0040] The roller pressing head 10-2 is driven to move by a displacement mechanism disposed in the shaping housing 21-2 to adjust the distance between the two roller pressing heads 10. Specifically,

[0041] The displacement mechanism includes an upper slider 22 slidably disposed in the guide groove of the shell cover 18-2 and a lower slider 24 slidably disposed in the guide groove inside the shaping shell 21-2. An adjusting screw 13 is rotatably disposed on the shaping shell 21-2, and the adjusting screw 13 extends into the shaping shell 21-2 and is threadedly connected with the lower slider 24. The roller head 10-2 is mounted on the upper slider 22 and the lower slider 24. When the adjusting screw 13 is rotated, the lower slider 24 can be driven to move, thereby moving the roller head 10-2, thereby adjusting the relative position between the two roller heads 10, promoting the release of stress when facing different thin-walled parts, and obtaining a better shaping effect.

[0042] A heating power source 23 is installed on the outer side of the shaping shell 21-2 to supply power to the coil 25 in the roller pressing head 10-1. When the roller pressing head 10-1 rotates, only the outer shell rotates, and the coil 25 has no risk of winding.

[0043] The shaping method of the thin-walled workpiece heating roller shaping mechanism according to the embodiment of the present invention comprises:

[0044] The thin-walled part 26 to be shaped is pre-fixed above the thin-walled part heating roller shaping mechanism by using a clamp.

[0045] The two screw blocks 5 are driven to approach each other by the screw motor 16, so that the two roller heads 10 clamp the thin-walled workpiece 26 to be shaped. After the clamping is completed, the screw motor 16 stops rotating, and self-locking is achieved through the screw 9. During clamping, the shaping housing can rotate relative to the screw block 5, and the spring 7 limits the displacement of the shaping housing, so that the roller head 10 can adapt to the concave and convex surface of the thin-walled workpiece 26 to be shaped.

[0046] Next, the heating power source 23 supplies power to the coil 25 in the roller pressing head 10-1, and the roller pressing head 10-1 is heated by electromagnetic induction. The rotary motor 12 drives the roller pressing head 10-1 to rotate, and the roller pressing head 10-1 drives the heating and shaping mechanism by friction with the thin-walled workpiece 26 to be shaped, and the friction between the thin-walled workpiece 26 to be shaped and the roller pressing head 10-2 drives the roller pressing head 10-2 to rotate, thereby achieving heating and shaping on both sides of the thin-walled workpiece.

[0047] The heating and shaping mechanism drives the clamping mechanism, the rotating table 15 and the moving block 17 to move with the assistance of two pairs of sliders 2 and corresponding guide rods 3, thereby realizing that the entire shaping mechanism moves along with the surface of the thin-walled part.

[0048] After the shaping of the thin-walled workpiece is completed, the screw motor 16 rotates in the opposite direction, the two screw blocks 5 move away from each other, and the two roller heads 10 release the thin-walled workpiece 26 to be shaped.

Claims

1. A thin-walled part heating roller pressing and shaping mechanism, characterized in that: The invention comprises a moving mechanism, a clamping mechanism and a heating and shaping mechanism; the moving mechanism comprises a moving block (17) having the freedom to move along the x-axis and the y-axis, a rotating table (15) is installed on the top of the moving block (17), and the rotating table (15) has the freedom to rotate around the z-axis; the clamping mechanism is installed on the rotating table (15), and the clamping mechanism has a pair of mounting seats that can move closer to or farther from each other; the heating and shaping mechanism comprises two shaping shells, two shell covers and two fixing plates (8), the two shaping shells are rotatably connected to the two mounting seats via a rotating fixing shaft (11), the fixing plate (8) is fixedly connected to the mounting seat via a first fixing rod (6), and the shell cover and the shaping shell are connected via a first fixing rod (6). The second fixing rod (14) is fixedly connected; a roller pressing head (10) is rotatably arranged on the shaping shell, and the two roller pressing heads (10) cooperate to clamp the thin-walled workpiece (26) to be shaped; a coil (25) is arranged in one of the roller pressing heads (10); when an alternating current is passed through the coil (25), the roller pressing head (10) generates heat and transfers the heat to the thin-walled workpiece (26) to be shaped in contact with it, and the roller pressing head (10) is driven to rotate by a driving mechanism arranged in the corresponding shaping shell; after the roller pressing head (10) is driven, the shaping shell rotates relative to the mounting seat; a spring (7) is connected between the first fixing rod (6) and the second fixing rod (14) for limiting the rotation angle of the shaping shell.

2. The thin-walled part heating roller pressing and shaping mechanism according to claim 1 is characterized in that: The other roller pressing head (10) is driven to move by a displacement mechanism arranged in a corresponding shaping shell, so as to adjust the distance between the two roller pressing heads (10).

3. The thin-walled part heating roller shaping mechanism according to claim 2, characterized in that: The displacement mechanism comprises an upper slider (22) slidably arranged in a guide groove of a shell cover and a lower slider (24) slidably arranged in a guide groove inside a shaping shell; an adjusting screw (13) is arranged on the shaping shell, and the adjusting screw (13) is threadedly connected to the lower slider (24) for driving the lower slider (24) to move; another roller pressing head (10) is connected to the upper slider (22) and the lower slider (24).

4. The thin-walled part heating roller shaping mechanism according to claim 1, characterized in that: The driving mechanism comprises a rotating motor (12) mounted on the outer wall of the shaping shell, a worm (20) being mounted on the output end of the rotating motor (12), the worm (20) driving a worm wheel (19) meshing with the worm wheel to rotate, and the roller pressing head (10) is connected to the worm wheel (19).

5. The thin-walled workpiece heating roller shaping mechanism according to claim 1, characterized in that: The moving mechanism also includes a rectangular frame (1), wherein four sides of the inner wall of the frame (1) are provided with horizontal guide grooves, wherein the relative horizontal guide grooves are of equal height, wherein a slider (2) is slidably arranged in each horizontal guide groove, and wherein two sliders (2) that are opposite to each other are connected by at least two guide rods (3); adjacent horizontal guide grooves are of unequal heights to avoid mutual interference of the guide rods (3); and each guide rod (3) passes through the moving block (17).

6. The thin-walled workpiece heating roller pressing and shaping mechanism according to claim 5, characterized in that: The frame (1) is a centrally symmetrical square structure.

7. The thin-walled workpiece heating roller pressing and shaping mechanism according to claim 1, characterized in that: The clamping mechanism comprises two screw blocks (5) and a fixed table (4) fixed on a rotating table (15); a screw (9) is rotatably arranged on the fixed table (4); the screw (9) is driven to rotate by a screw motor (16) arranged at the outer end of the fixed table (4); the screw (9) has a front part and a rear part with different thread rotation directions; the two screw blocks (5) are respectively threadedly connected to the front part and the rear part of the screw (9) and can move along the guide groove of the fixed table (4); the screw block (5) serves as the mounting seat.

8. The thin-walled workpiece heating roller shaping mechanism according to claim 7, characterized in that: The fixed platform (4) and the rotating platform (15) are aligned in center; the boundary between the front and rear parts of the lead screw (9) is located at the center of the fixed platform (4).

9. The thin-walled workpiece heating roller pressing and shaping mechanism according to claim 1, characterized in that: The heating power source (23) of the coil (25) is installed on the outside of the shaping shell corresponding to the other roller pressing head (10).

10. A shaping method for thin-walled parts using a heating roller shaping mechanism according to any one of claims 1 to 9, characterized in that: include: Using a clamp to pre-fix the thin-walled part (26) to be shaped above the thin-walled part heating roller shaping mechanism; The two mounting seats are close to each other so that the two roller pressure heads (10) clamp the thin-walled workpiece (26) to be shaped. The corresponding roller pressure head (10) is driven to rotate by a driving mechanism, and the coil (25) is energized to heat the roller pressure head (10). The roller pressure head (10) drives the heating and shaping mechanism by friction with the thin-walled workpiece (26) to be shaped. The thin-walled workpiece (26) to be shaped causes the other roller pressure head (10) to rotate by friction, thereby achieving heating and shaping of both sides of the thin-walled workpiece. The heating and shaping mechanism drives the clamping mechanism, thereby driving the moving block (17) to move along the surface of the shaped thin-walled workpiece (26).

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