Flexible growth forming equipment for thin-wall high-rib array structure

Abstract

The invention relates to thin-wall high-rib array structure flexible growth forming equipment which comprises a machine body assembly, a feeding assembly, a rotary transmission assembly and a rolling assembly, the machine body assembly comprises a guide column and a forming outer die cavity, the feeding assembly is connected with a profiling cam, the feeding assembly drives the profiling cam to axially move, and the rolling assembly drives the profiling cam to rotate. The radial movement of the core roller on the horizontal plane is realized; the rolling assembly comprises a rolling shaft and a rolling wheel, the rolling wheel is installed on the rolling shaft, the rotary transmission assembly drives the rolling shaft to revolve, a blank to be formed is placed in the forming outer die cavity, when the rolling wheel is placed in the blank to be formed, in the revolution process of the rolling shaft, the inclined face of the rolling shaft is attached to the inclined face of the profiling cam, and after the rolling wheel makes contact with the blank, the rolling shaft rotates automatically. And the rolling shaft drives the rolling wheel to do compound motion of revolution, rotation and radial feeding, so that the blank starts flexible growth forming motion. The flexible growth forming equipment for the thin-wall high-rib array structure can be used for efficiently manufacturing the thin-wall high-rib array structure.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and more specifically to a flexible growth forming equipment for a thin-wall high-rib array structure. Background Art

[0002] In the fields of energy, transportation, aerospace, national defense and military, equipment usually faces harsh working conditions, so there is an urgent need for high-rigidity and high-strength load-bearing components. Thin-walled high-rib array structures have the advantages of light weight, high strength, high rigidity, high material utilization, and stable mechanical properties, and have been widely used in the above-mentioned fields. The thin-walled high-rib array structure has a thin web, high ribs, and a very complex geometry. These characteristics make it difficult to manufacture such components with high performance and low cost. At this stage, plastic forming equipment is difficult to meet its high-performance and low-cost production and manufacturing needs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a thin-walled high-rib array structure flexible growth forming equipment capable of efficiently manufacturing the thin-walled high-rib array structure.

[0004] The technical solution adopted by the present invention to solve the technical problem is: construct a thin-wall high-rib array structure flexible growth forming equipment, including a fuselage component, a feeding component, a rotating transmission component and a rolling component, the fuselage component includes a guide column and a forming outer mold cavity, the feeding component is connected to a profiling cam, the feeding component drives the profiling cam to move axially, and realizes the radial movement of the core roller in the horizontal plane;

[0005] The rolling assembly includes a roller and a rolling wheel, the rolling wheel is installed on the roller, and the rotating transmission assembly drives the roller to revolve. The blank to be formed is placed in the outer forming mold cavity. When the rolling wheel is placed in the blank to be formed, during the revolution of the roller, the inclined surface of the roller fits the inclined surface of the contouring cam. After the rolling wheel contacts the blank, the roller rotates, and the roller drives the rolling wheel to perform a composite motion of revolution, rotation and radial feeding, so that the blank starts a flexible growth forming motion.

[0006] According to the above scheme, the fuselage assembly also includes a spline shaft fixing plate, a fixing plate connecting sleeve, a fixing seat fixing plate, a guide column locking sleeve, a lower bottom plate and a mold cavity bottom plate. The spline shaft fixing plate and the fixing seat fixing plate are assembled into one body through the fixing plate connecting sleeve and are installed on the guide column through the sleeve. The mold cavity bottom plate and the forming outer mold cavity are assembled into one body through bolts and fixed on the guide column.

[0007] According to the above scheme, the feed assembly also includes a cylinder, a cylinder fixing plate, a cylinder fixing sleeve, a cylinder connecting ring, a cylinder pressure plate, a push rod, a push sleeve, a spline shaft fixing sleeve and a spline shaft. The cylinder fixing plate is fixed to the spline shaft fixing plate through the cylinder fixing sleeve, the cylinder is fixed to the cylinder fixing plate, the cylinder connecting ring is installed at the end of the cylinder piston rod, the cylinder pressure plate is fixed between the piston end of the cylinder and the cylinder connecting ring, through holes are provided on the four corners of the pressure plate, which can slide on the guide column, the push rod is assembled with the cylinder connecting ring through the push rod shoulder, the spline shaft fixing sleeve is fixed to the spline shaft fixing plate, the spline shaft is fixed to the spline shaft fixing sleeve, the push rod passes through the through hole of the spline shaft fixing sleeve and is fixedly connected to the push sleeve, and the other side of the push sleeve is fixedly connected to the contoured cam.

[0008] According to the above scheme, the rotary transmission assembly includes a roller support frame fixing seat, a roller support frame, a nut, a tapered roller bearing, a roller internal gear sleeve, a gear, a center gear, a roller slider, a servo motor, a reduction box and a center gear drive shaft, the servo motor is connected to the reduction box, the reduction box is fixed on the fixing seat fixing plate, the reduction box output shaft drives the center gear drive shaft to rotate, and the center gear drive shaft is installed on the center gear;

[0009] The roller support frame fixed seat is fixed on the fixed seat fixed plate, the outer side of the tapered roller bearing at the upper end is fixed on the fixed seat, the roller inner gear sleeve is fixedly connected with the gear and is transmitted with the roller support frame, a slide groove is provided on the roller support frame, and the roller slider matches the slide groove of the roller support frame.

[0010] According to the above scheme, a spring and a spring stopper are provided in the roller slider, the spring fixing pressure plate is fixed in the groove of the roller support frame, the two sides of the spring are respectively connected to the spring stopper and the spring fixing pressure plate, the roller is fixed in the roller slider, and the rolling wheel is assembled on the roller.

[0011] According to the above scheme, the profile surface of the profiling cam is obtained by the following method:

[0012] A three-dimensional coordinate system is established with the center of the lower end surface of the profiling cam as the origin. The parameters of the profiling cam profile surface are the angle θ of the point on the profile surface on the XY plane, the distance ρ from the point on the profile surface to the Z axis, and the coordinate z of the point on the profile surface on the Z axis in the coordinate system. The cross-sectional profile of the profiling cam in the horizontal plane is a rounded rectangle, which gradually increases along the positive direction of the Z axis and then remains unchanged.

[0013] According to the above scheme, the profile cam profile surface is expressed by the following formula:

[0014]

[0015] Wherein, a is the maximum distance from the upper end surface of the profiling cam to the origin in the Y-axis direction; b is the maximum distance from the upper end surface of the profiling cam to the origin in the X-axis direction; R is the fillet radius of the upper end surface profile of the profiling cam; θ is the angle between the point on the profiling cam profile surface and the XY plane; ρ is the distance from the point on the profiling cam profile surface to the Z axis, ρ≥0; z is the coordinate of the point on the profiling cam profile surface on the Z axis in the coordinate system; z0 is the height of the profiling cam inclined surface, when z>z0, take z=z0 and substitute it into the above formula; α is the angle between the inclination angle of the profiling cam and the vertical plane; β is the angle between the center of the fillet of the profiling cam profile surface on the XY plane, tanβ=(aR) / (bR); Formula (1) represents a section of the cam profile connected to the Y axis in the i-th quadrant, Formula (2) represents a section of the cam profile not connected to the X and Y axes in the i-th quadrant, Formula (3) represents a section of the cam profile connected to the X axis in the i-th quadrant, i represents the quadrant where the profiling cam profile is located at the rotation angle θ, and the value range is 1, 2, 3, 4.

[0016] According to the above scheme, the output shaft of the reduction gearbox and the central gear drive shaft are driven by a belt.

[0017] According to the above solution, the central gear drive shaft is installed on the central gear through a flat key.

[0018] According to the above solution, a roller needle is arranged between the roller and the roller slider.

[0019] The thin-wall high-rib array structure flexible growth forming equipment of the present invention has the following beneficial effects:

[0020] The flexible growth forming equipment for thin-walled high-rib array structures of the present invention can select cam blocks of different sizes according to the different sizes of the formed parts. The roller rotates around the surface of the cam block under the pressure of the spring, and the rolling wheel and the roller can also rotate relative to each other, so that the blank is flexibly grown and formed, and thin-walled high-rib array structures can be efficiently manufactured. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0022] Figure 1 is a schematic cross-sectional view of a profile cam of the present invention;

[0023] Figure 2 It is a schematic diagram of the motion process of the profile cam of the present invention;

[0024] Figure 3 It is the overall structure diagram of the equipment of the present invention;

[0025] Figure 4 It is the equipment gear installation arrangement diagram of the present invention;

[0026] Figure 5 It is a front view of the overall structure of the equipment of the present invention;

[0027] Figure 6 is a cross-sectional view of the rotary transmission assembly and the rolling assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the roller slider and the roller support frame of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the roller slider assembly of the present invention;

[0030] Fig. 9 It is a cross-sectional view of the connection mode of the hydraulic feed and rotary transmission assembly of the present invention;

[0031] Fig.10 It is a structural diagram of the hydraulic feed component of the present invention;

[0032] Fig.11 is a cross-sectional view of a hydraulic feed component of the present invention;

[0033] Fig.12 is the central gear drive diagram of the present invention;

[0034] Fig.13 is a cross-sectional view of the central gear of the present invention;

[0035] Fig.14 It is a structural diagram of the contour cam component of the present invention;

[0036] In the figure: 1. Cylinder; 2. Cylinder fixing plate; 3. Cylinder fixing sleeve; 4. Cylinder connecting ring; 5. Nut; 6. Fixing plate connecting sleeve; 7. Guide pillar locking sleeve; 8. Guide pillar; 9. Forming outer mold cavity; 10. Cavity bottom plate; 11. Lower bottom plate; 12. Cylinder pressure plate; 13. Push rod; 14. Spline shaft fixing sleeve; 15. Spline shaft fixing plate; 16. Fixing seat fixing plate; 17. Roller slider; 18. Spring; 19. Spring stopper; 20. Spring fixing pressure plate; 21 .gear; 22. roller inner gear sleeve; 23. flat key; 24. nut; 25. tapered roller bearing; 26. roller support frame fixing seat; 27. roller support frame; 28. roller washer; 29. ​​needle roller; 30. roller; 31. rolling wheel; 32. flat key; 33. push sleeve; 34. spline shaft; 35. profile cam; 36. belt; 37. reduction box; 38. servo motor; 39. center gear drive shaft; 40. center gear; 41. fuselage, 42. flat key. DETAILED DESCRIPTION

[0037] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0038] like Figure 1-14 As shown, the thin-wall high-rib array structure flexible growth forming equipment of the present invention includes a body assembly, a feeding assembly, a rotating transmission assembly, and a four-roller rolling assembly.

[0039] The fuselage assembly includes a nut 5, a spline shaft fixing plate 15, a fixing plate connecting sleeve 6, a fixing seat fixing plate 16, a guide column locking sleeve 7, a guide column 8, a lower bottom plate 11, a cavity bottom plate 10, and a forming outer cavity 9. The hydraulic feed assembly includes an oil cylinder 1, an oil cylinder fixing plate 2, an oil cylinder connecting ring 4, an oil cylinder pressure plate 12, a push rod 13, a push sleeve 33, an oil cylinder fixing sleeve 3, a spline shaft fixing sleeve 14, a spline shaft 34, a profile cam 35, and a flat key 32. The rotary transmission assembly includes a roller support frame fixing seat 26, a roller support frame 27, a nut 24, a tapered roller bearing 25, a roller inner gear sleeve 22, a flat key 23, a gear 21, a roller slider 17, a belt 36, a reduction box 37, a servo motor 38, a central gear drive shaft 39, and a central gear 40. The four-roller rolling assembly includes a roller slider 17 , a spring 18 , a spring baffle 19 , a spring fixing pressing plate 20 , a roller washer 28 , a roller 30 , a rolling wheel 31 , and a roller needle 29 .

[0040] The structure of the fuselage is as follows Figure 3 and Figure 5 As shown, the spline shaft fixing plate 15 and the fixing seat fixing plate 16 are assembled together using four fixing plate connecting sleeves 6 and eight nuts 5. The four fixing plate connecting sleeves 6 are respectively installed on the four guide pillars 8, which can drive the fixing plate assembly to slide on the guide pillars 8. The guide pillar locking sleeve 7 is installed on the guide pillar 8 and is located below the fixing plate assembly to ensure the axial fixation of the fixing plate assembly. The mold cavity bottom plate 10 and the forming outer mold cavity 9 are fastened together by eight countersunk screws, and the mold cavity bottom plate 10 and the lower bottom plate 11 are fixed together by eight screws to form a bottom plate assembly. The four guide pillars 8 pass through the four through holes of the lower bottom plate 11, and there is a stepped shaft at the end of the guide pillar 8 to prevent the assembled bottom plate and mold cavity from moving downward. The assembled equipment rack system is installed on the fuselage.

[0041] like Figure 3 , Figure 5 , Figure 6 , Figure 7 , Fig.11 , Fig.14As shown, the cylinder fixing sleeve 3 is fixed to the spline shaft fixing plate 15 by four bolts, and the other end of the cylinder fixing sleeve 3 is fixed to the cylinder fixing plate 2. The oil cylinder 1 is fixed to the oil cylinder fixing plate 2 by four countersunk bolts. The oil cylinder connecting ring 3 is fixed to the piston rod end by the thread at the end of the piston rod of the oil cylinder 1. The six push rods 13 pass through the six through holes of the cylinder connecting ring 4 and the six through holes of the spline shaft fixing sleeve 14 respectively, and are axially fixed to the oil cylinder connecting ring 4 by the stepped shaft shoulder on the push rod 13. The central area of ​​the oil cylinder pressure plate 12 is clamped between the shaft shoulder of the oil cylinder piston rod end and the oil cylinder connecting ring 4, and is provided with a through hole corresponding to the guide column 8, and can move up and down along the guide column 8. There is also a certain length of thread at the end of the push rod that matches the push sleeve 33 to fix the push rod 13 and the push sleeve 33. The other end of the push sleeve 33 uses eight hexagon socket screws to fasten the push sleeve and the contour cam 35 together. The purpose of this is to drive the cylinder connecting ring 4 fixed at the piston rod end and the cylinder pressure plate 12 clamped in the middle to feed downward when the oil cylinder is working, and the cylinder pressure plate 12 pushes the remaining cylinder connecting rings 4 to move downward together, thereby driving all the push rods 13, push sleeves 33, and profile cams 35 to move downward. The spline shaft fixing sleeve 14 is fixed to the fixing sleeve fixing plate 16 by six countersunk screws, and the spline shaft 34 is fixed to the spline shaft fixing sleeve 14 by one countersunk screw and two flat keys 32. The end of the spline shaft 34 has a tooth profile, and the profile cam 35 has a corresponding groove. When the profile cam 35 moves, it will not interfere with the fixed spline shaft 34.

[0042] like Figure 3 , Figure 4 , Fig.12 , Fig.13 As shown, the servo motor 38 and the reduction box 37 are fixedly connected by four bolts, and the reduction box 37 is installed on the fixing seat fixing plate 16 by four bolts. The output shaft of the reduction box and the central gear drive shaft 39 are driven by a belt 36, and the central gear drive shaft 39 drives the central gear 40 to rotate through two flat keys 42. The central gear 40 is meshed with the four surrounding gears 21, and the four gears 21 are respectively meshed with the remaining four gears 21. When the servo motor 38 drives the central gear 40 to rotate, the remaining eight gears 21 will also rotate according to the gear meshing principle, and there will be no motion interference between each gear.

[0043] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9As shown, the roller support frame fixing seat 26 is fixed to the fixing seat fixing plate 16 by six countersunk screws, and two nuts 24 are pre-tightened on the roller support frame 27 by threaded fit. The outer ring of the tapered roller bearing 25 at the upper end is fixed to the roller support frame fixing seat 26, and the inner ring is axially fixed by the double nuts 24. The tapered roller bearing 25 at the lower end is axially fixed by the stepped shaft shoulders of the roller support frame fixing seat 26 and the roller support frame 27. The roller support frame 27 is axially fixed by two tapered roller bearings. When the roller support frame 27 rotates, it will not affect the fixed roller support frame fixing seat 26. The roller inner gear sleeve 22 and the roller support frame 27 are driven by two flat keys 23. The roller inner gear sleeve 22 is installed in the groove on the inner side of the gear 21, and the two are fastened by six screws to complete the axial fixation of the gear 21. When the gear 21 rotates, the roller support frame 27 will be driven to rotate together through the roller inner gear sleeve 22. The roller support frame 27 is provided with four slide grooves that fit the roller slider 17, so that the roller slider 17 can move on the slide grooves. Therefore, when the gear 21 is driven by the servo motor 38, the roller inner gear sleeve 22, the roller support frame 27, and the roller slider 17 will be driven to rotate synchronously, and under the action of the two bearings, the roller support frame fixing seat 26 will not rotate.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.14As shown, a spring fixing pressure piece 20 is installed in the groove of the roller support frame 27 by three countersunk screws, and a total of eight spring fixing pressure pieces 20 are installed on the support frame 27. Four roller sliders 17 can move along the slide groove of the roller support frame 27. There are two through grooves on the roller slider 17 for installing spring baffles 19. A spring 18 is fixed at both ends of each spring baffle, and the other side of the spring 18 is fixed on the spring fixing pressure piece 20. The upper end of the roller 30 is axially fixed by a roller washer 28, and the lower end is axially fixed by two roller washers 28. The roller 30 is used to fix the two washers 28 at the lower end through a stepped shoulder. 34 roller needles 29 are installed between the roller 30 and the roller slider 17, and the rolling wheel 31 is installed on the roller 30 and axially fixed by the shoulder of the roller 30. The roller is provided with an inclination angle of 5°, which cooperates with the contour cam 35. Under the pressure of four springs 18, the inclined surface of the roller 30 of each slider 17 is in close contact with the inclined surface of the profile cam 35. Driven by the servo motor 38, the roller slider 17, the roller 30, and the rolling wheel 31 rotate around the axis of the spline shaft along with the roller support frame 27. When the roller 30 contacts the profile cam 35, the roller 30 will also rotate around its own axis under the action of friction. Due to the existence of the needle roller 29, there will be no motion interference between the roller 30 and the roller slider 17.

[0045] The operation process of the thin-wall high-rib array structure flexible growth forming equipment of the present invention is as follows:

[0046] Select a suitable profiling cam 35 according to the size of the formed part, place the blank into the forming outer mold cavity 9, fit the inclined surface of the roller into the inclined surface of the profiling cam 35, and adjust the positions of the spline shaft fixing plate 15 and the fixing seat fixing plate 16 on the guide column so that the rolling wheel is placed between the blanks to be formed, and lock the guide column locking sleeve 7 to fix the position of the fixing plate 16.

[0047] Driven by the servo motor 38, the central gear 40 rotates. Since the gears 21 mesh with each other, the rotation directions of each adjacent gear are different. The gear 21 drives the roller inner gear sleeve 22 to rotate, and the roller inner gear sleeve 22 drives the roller support frame 27 to rotate by key transmission. The roller slider 17 is installed on the roller support frame 27, and the roller 30 is installed on the roller slider 17. Therefore, the roller 30 also rotates around the spline shaft axis, that is, it revolves;

[0048] Under the pressure of the spring 18, during the revolution of the roller 30, the inclined surface of the roller 30 always fits the inclined surface of the contour cam 35, so the actual motion trajectory of the roller 30 is a square trajectory. After the rolling wheel 31 contacts the blank, under the action of friction, the roller slider 17 and the roller 30 rotate relative to each other, that is, rotate on their own.

[0049] The oil cylinder 1 starts, driving the oil cylinder connecting ring 4 and the oil cylinder pressure plate 12 at the piston rod end to move downward, and the oil cylinder pressure plate 12 pushes the remaining eight oil cylinder connecting rings 4 to move downward. The oil cylinder connecting ring 4 pushes the push rod 13 and the push sleeve 33 fixed to the push rod downward, and the push sleeve 33 moves downward with the profiling cam 35 fixed to the end of the push sleeve. Due to the action of the spring, the inclined surface of the roller 30 always fits with the inclined surface of the profiling cam 35. During the downward movement of the profiling cam 35, the roller slider 17 moves outward on the slide groove of the roller support frame 27, and the roller 30 moves outward in the radial direction, so the rolling wheel 31 feeds radially. The roller drives the rolling wheel to perform a composite motion of revolution, rotation and radial feeding, and the flexible growth forming motion of the blank begins;

[0050] When the flexible growth and forming movement of the blank is completed, the oil cylinder releases oil, the oil cylinder connecting ring 4 fixed to the oil cylinder piston rod is driven upward, the push rod 13, the push sleeve 33, and the contour cam 35 also move upward, and under the action of the spring, the roller 30 and the rolling wheel shrink inward, and the rolling wheel and the blank are separated. At this time, the assembly formed by the spline shaft fixing plate 15 and the fixing seat fixing plate 16 is moved upward on the guide column 8, so that the roller 30 and the rolling wheel 31 leave the inner cavity of the formed blank, and the formed blank is safely taken out.

[0051] The equipment of the present invention realizes the radial movement of the roller 30 in the horizontal plane through the axial movement of the profiling cam 35. The axial movement of the profiling cam is realized by the oil cylinder feed on the equipment. A three-dimensional coordinate system is established with the center of the lower end surface of the profiling cam as the origin, as shown in FIG. Figure 1-2 As shown. The parameters of the profile cam profile surface are the angle θ between the point on the profile surface and the XY plane, the distance ρ between the point on the profile surface and the Z axis, and the coordinate z of the point on the profile surface on the Z axis in the coordinate system. The cross-sectional profile of the profile cam in the horizontal plane direction is a rounded rectangle, which gradually increases along the positive direction of the Z axis and then remains unchanged. With reference to the coordinate system, the profile cam profile surface can be expressed by the following formula

[0052]

[0053]

[0054] Wherein, a is the maximum distance from the upper end surface of the profiling cam to the origin in the Y-axis direction; b is the maximum distance from the upper end surface of the profiling cam to the origin in the X-axis direction; R is the fillet radius of the upper end surface profile of the profiling cam; θ is the angle between the point on the profiling cam profile surface and the Z-axis, ρ≥0; z is the coordinate of the point on the profiling cam profile surface on the Z-axis in the coordinate system; z0 is the height of the profiling cam inclined surface. When z>z0, z=z0 is substituted into the above formula In the formula, α is the angle between the inclination angle of the profiling cam slope and the vertical plane; β is the angle between the center of the fillet of the profiling cam profile surface on the XY plane, tanβ=(aR) / (bR); Formula 1 represents a section of the cam profile connected to the Y axis in the i-th quadrant, Formula 2 represents a section of the cam profile not connected to the X and Y axes in the i-th quadrant, Formula 3 represents a section of the cam profile connected to the X axis in the i-th quadrant, i represents the quadrant where the profiling cam profile is located under the rotation angle θ, and the value range is 1, 2, 3, 4.

[0055] The servo motor drives the center gear drive shaft to rotate around its own axis through a belt, and the center gear drive shaft drives the center gear to rotate using a flat key. The center gear and other gears mesh with each other for transmission, and the roller inner gear sleeve is fixedly connected to the gear so that it rotates with the gear. The roller inner gear sleeve drives the roller support frame to rotate through a flat key, thereby realizing the rotation of the roller slider and the roller. The two sides of the spring are respectively fixedly connected to the spring pressure plate and the spring fixed baffle. Under the action of the spring, when the roller rotates around the axis of the spline shaft, the inclined surface of the roller always fits the inclined surface of the profiling cam. There are multiple needle rollers installed between the roller and the roller slider. When the inclined surface of the roller contacts the inclined surface of the profiling cam, the roller will also rotate around its own axis under the action of friction.

[0056] The hydraulic cylinder starts and drives the cylinder connecting ring and the cylinder pressure plate at the end of the cylinder piston rod to move downward, and the cylinder pressure plate pushes the remaining eight connecting rings to move downward. The cylinder connecting ring pushes the push rod, the push sleeve and the profile cam fixed at the end of the push sleeve to move downward together. Since the position of the roller on the Z axis remains unchanged, the roller inclined surface and the profile cam inclined surface are always in contact. During the downward movement of the profile cam, the distance ρ from the point on the profile cam profile surface that contacts the roller to the Z axis increases, and the roller slider moves outward on the slide groove of the roller support frame, thereby realizing the radial feeding of the nine sets of rolling wheels, so that the rolling wheels begin to roll the blank.

[0057] When the blank is formed, the oil cylinder releases oil, the cylinder connecting ring moves upward, and drives the push rod, push sleeve, and profile cam to move upward together. The distance ρ from the point on the profile cam surface that contacts the roller to the Z axis becomes smaller. Under the action of the spring, the roller slider moves inward on the slide groove of the roller support frame, driving the roller and the rolling wheel to move inward, the rolling wheel separates from the formed blank, and then moves the fixed plate assembly upward. Finally, the blank is ejected by the ejector pin to achieve safe removal of the formed part.

[0058] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A thin-wall high-rib array structure flexible growth forming equipment, characterized in that: It includes a body assembly, a feeding assembly, a rotating transmission assembly and a rolling assembly, wherein the body assembly includes a guide column and a forming outer mold cavity, the feeding assembly is connected to a profiling cam, and the feeding assembly drives the profiling cam to move axially to realize the radial movement of the core roller in the horizontal plane; The rolling assembly includes a roller and a rolling wheel, the rolling wheel is installed on the roller, and the rotating transmission assembly drives the roller to revolve. The blank to be formed is placed in the outer forming mold cavity. When the rolling wheel is placed in the blank to be formed, during the revolution of the roller, the inclined surface of the roller fits the inclined surface of the contouring cam. After the rolling wheel contacts the blank, the roller rotates, and the roller drives the rolling wheel to perform a composite motion of revolution, rotation and radial feeding, so that the blank starts a flexible growth forming motion.

2. The thin-wall high-rib array structure flexible growth forming equipment according to claim 1 is characterized in that: The fuselage assembly also includes a spline shaft fixing plate, a fixing plate connecting sleeve, a fixing seat fixing plate, a guide column locking sleeve, a lower bottom plate and a mold cavity bottom plate. The spline shaft fixing plate and the fixing seat fixing plate are assembled into one body through the fixing plate connecting sleeve and are installed on the guide column through the sleeve. The mold cavity bottom plate and the forming outer mold cavity are assembled into one body through bolts and fixed on the guide column.

3. The thin-wall high-rib array structure flexible growth forming equipment according to claim 2 is characterized in that: The feed assembly also includes a cylinder, a cylinder fixing plate, a cylinder fixing sleeve, a cylinder connecting ring, a cylinder pressure plate, a push rod, a push sleeve, a spline shaft fixing sleeve and a spline shaft. The cylinder fixing plate is fixed to the spline shaft fixing plate through the cylinder fixing sleeve, the cylinder is fixed to the cylinder fixing plate, the cylinder connecting ring is installed at the end of the cylinder piston rod, the cylinder pressure plate is fixed between the piston end of the cylinder and the cylinder connecting ring, through holes are provided on the four corners of the pressure plate, and can slide on the guide column, the push rod is assembled with the cylinder connecting ring through the push rod shoulder, the spline shaft fixing sleeve is fixed to the spline shaft fixing plate, the spline shaft is fixed to the spline shaft fixing sleeve, the push rod passes through the through hole of the spline shaft fixing sleeve and is fixedly connected to the push sleeve, and the other side of the push sleeve is fixedly connected to the contoured cam.

4. The thin-wall high-rib array structure flexible growth forming equipment according to claim 3 is characterized in that: The rotary transmission assembly includes a roller support frame fixing seat, a roller support frame, a nut, a tapered roller bearing, a roller internal gear sleeve, a gear, a center gear, a roller slider, a servo motor, a reduction box and a center gear drive shaft, the servo motor is connected to the reduction box, the reduction box is fixed on the fixing seat fixing plate, the reduction box output shaft drives the center gear drive shaft to rotate, and the center gear drive shaft is installed on the center gear; The roller support frame fixed seat is fixed on the fixed seat fixed plate, the outer side of the tapered roller bearing at the upper end is fixed on the fixed seat, the roller inner gear sleeve is fixedly connected with the gear and is transmitted with the roller support frame, a slide groove is provided on the roller support frame, and the roller slider matches the slide groove of the roller support frame.

5. The thin-wall high-rib array structure flexible growth forming equipment according to claim 4 is characterized in that: The roller slider is provided with a spring and a spring stopper, the spring fixing pressure piece is fixed in the groove of the roller support frame, the two sides of the spring are respectively connected with the spring stopper and the spring fixing pressure piece, the roller is fixed in the roller slider, and the rolling wheel is assembled on the roller.

6. The thin-wall high-rib array structure flexible growth forming equipment according to claim 1, characterized in that: The profile surface of the profiling cam is obtained by the following method: A three-dimensional coordinate system is established with the center of the lower end surface of the profiling cam as the origin. The parameters of the profiling cam profile surface are the angle θ of the point on the profile surface on the XY plane, the distance ρ from the point on the profile surface to the Z axis, and the coordinate z of the point on the profile surface on the Z axis in the coordinate system. The cross-sectional profile of the profiling cam in the horizontal plane is a rounded rectangle, which gradually increases along the positive direction of the Z axis and then remains unchanged.

7. The thin-wall high-rib array structure flexible growth forming equipment according to claim 6, characterized in that: The profile cam profile is expressed by the following formula: Wherein, a is the maximum distance from the upper end surface of the profiling cam to the origin in the Y-axis direction; b is the maximum distance from the upper end surface of the profiling cam to the origin in the X-axis direction; R is the fillet radius of the upper end surface profile of the profiling cam; θ is the angle between the point on the profiling cam profile surface and the XY plane; ρ is the distance from the point on the profiling cam profile surface to the Z axis, ρ≥0; z is the coordinate of the point on the profiling cam profile surface on the Z axis in the coordinate system; z0 is the height of the profiling cam inclined surface, when z>z0, take z=z0 and substitute it into the above formula; α is the angle between the inclination angle of the profiling cam and the vertical plane; β is the angle between the center of the fillet of the profiling cam profile surface on the XY plane, tanβ=(aR) / (bR); Formula (1) represents a section of the cam profile connected to the Y axis in the i-th quadrant, Formula (2) represents a section of the cam profile not connected to the X and Y axes in the i-th quadrant, Formula (3) represents a section of the cam profile connected to the X axis in the i-th quadrant, i represents the quadrant where the profiling cam profile is located at the rotation angle θ, and the value range is 1, 2, 3, 4.

8. The thin-wall high-rib array structure flexible growth forming equipment according to claim 4, characterized in that: The output shaft of the reduction box and the central gear drive shaft are driven by a belt.

9. The thin-wall high-rib array structure flexible growth forming equipment according to claim 4, characterized in that: The central gear driving shaft is mounted on the central gear through a flat key.

10. The thin-wall high-rib array structure flexible growth forming equipment according to claim 5, characterized in that: A roller needle is arranged between the roller and the roller slider.

Images