A layered multi-point forming tool system and unit height calculation method

Abstract

The present invention relates to a layered multi-point forming tool system and a method for calculating the height of a unit body, and belongs to the field of moldless forming technology. The tool system is mainly composed of an upper plate, a micro linear servo driver group, a middle plate assembly, a back plate assembly, a layered connecting rod assembly, a connecting plate, a multi-point tool head assembly, etc. The micro linear servo driver group is fixed on the upper plate, and the micro linear servo driver drives the layered connecting rod assembly to perform up and down linear motion. The middle plate assembly and the back plate assembly play a guiding role. The layered connecting rod assembly drives the unit body in the multi-point tool head assembly to perform up and down linear motion. By adjusting the elongation of each unit body, different free-form surfaces are fitted. The layered connecting rod assembly is used to independently drive the unit body, which not only ensures the forming speed of the free-form surface, but also takes into account the density between the unit bodies, with high forming accuracy and wide application. The present invention adopts two calculation methods to determine the height of the unit body, which is easy to use and has high calculation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of dieless forming, and more specifically to a layered multi-point forming tool system. Background Art

[0002] Multi-point forming technology replaces the traditional integral mold with a regularly arranged basic body dot matrix, and controls the position of the basic body by computer to form a "flexible mold" with variable shape, thereby realizing the rapid forming of sheet metal parts of different shapes. During multi-point forming, the position coordinates of each basic body are adjusted according to the geometric shape of the part to be formed, and a multi-point forming surface is constructed. Then, the sheet metal is formed according to this fixed multi-point mold shape; or it is wrapped with a grinding and polishing belt for grinding and polishing. The forming surface remains unchanged during the part forming process, and there is no relative movement between the basic bodies.

[0003] Multi-point forming is to form an instantaneous forming surface that changes at any time by controlling the movement of each basic body in real time. This is an ideal sheet metal forming method, but to make this forming method more accurate, the spacing between the unit body lattices should be as small as possible, and the forming should be as fast as possible, which requires taking into account both the forming speed and the forming accuracy. Based on this, a layered multi-point forming tool system and a unit body height calculation method are proposed. Summary of the invention

[0004] The present invention relates to a layered multi-point forming tool system and a method for calculating the height of a unit body, and belongs to the field of moldless forming technology. The tool system is mainly composed of an upper plate, a micro linear servo driver group, a middle plate assembly, a back plate assembly, a layered connecting rod assembly, a connecting plate, a multi-point tool head assembly, etc. The micro linear servo driver group is fixed on the upper plate, and the micro linear servo driver drives the layered connecting rod assembly to perform up and down linear motion. The middle plate assembly and the back plate assembly play a guiding role. The layered connecting rod assembly drives the unit body in the multi-point tool head assembly to perform up and down linear motion, and fits different free-form surfaces by adjusting the elongation of each unit body. The present invention adopts a layered connecting rod assembly to independently drive the unit body, which not only ensures the forming speed of the free-form surface, but also takes into account the density between the unit bodies, with high forming accuracy and wide application.

[0005] The layered multi-point forming tool system consists of an upper plate, a micro linear servo drive group, a middle plate assembly, a back plate assembly, a layered connecting rod assembly, a connecting plate, a multi-point tool head assembly and some screws and nuts used for connection; the upper plate is located at the top of the entire device, the micro linear servo drive group is located directly below the upper plate and is rigidly connected to the upper plate through threads; the middle plate assembly is located directly below the micro linear servo drive group, the middle plate assembly and the micro linear servo drive group are connected by a sliding pair, and the middle plate assembly and the upper plate are rigidly connected by threads; the layered connecting rod assembly is located directly below the middle plate assembly, The layer connecting rod assembly and the micro linear servo drive group are rigidly connected by threads; the Hui-shaped plate assembly is located directly below the middle plate assembly and is rigidly connected to the middle plate assembly by locating pins and threads; the Hui-shaped plate assembly is located around the layered connecting rod assembly and is connected to the layered connecting rod assembly by sliding pairs; the multi-point tool head assembly is located directly below the layered connecting rod assembly and is rigidly connected to the layered connecting rod assembly by threads; the connecting plate is located on both sides of the multi-point tool head assembly, located directly below the Hui-shaped plate assembly, and is rigidly connected to the multi-point tool head assembly by threads, and is rigidly connected to the Hui-shaped plate assembly by threads.

[0006] The micro linear servo drive group consists of 36 copper columns, 36 M3 hexagonal nuts, 36 washers, and 36 micro linear servo drives, which can provide power source for the movement of the entire device.

[0007] The middle plate assembly consists of a middle plate and a 5X10X15 linear bearing I.

[0008] The U-shaped plate assembly consists of a U-shaped cover plate, M4X10 hexagon socket head screws, a U-shaped base plate and a 5X10X15 linear bearing II.

[0009] The layered connecting rod assembly consists of 4 inner vertical rods I, 4 inner cross rods, 4 inner nuts II, 4 inner nuts I, 4 inner vertical rods II, 12 middle nuts II, 12 middle vertical rods I, 12 middle cross rods, 12 middle nuts I, 12 middle vertical rods II, 20 outer vertical rods I, 20 outer cross rods, 20 outer nuts I, 20 outer nuts II and 20 outer vertical rods II.

[0010] The multi-point tool head assembly consists of a unit body I, a multi-point tool head cover plate, an M2X10 hexagon socket head screw, a multi-point tool head base, a universal ball bearing and a 4X6X10 sliding sleeve.

[0011] The tail of the micro linear servo driver in the micro linear servo driver group is connected to the copper column by thread, and the copper column is fixedly connected to the upper plate by M3 hexagonal nuts and washers, so that the power source of the device can be fixed on the upper plate.

[0012] In the middle plate assembly, the 5X10X15 linear bearing I is connected to the middle plate by a sliding pair. The special structure of the middle plate can limit the downward movement of the 5X10X15 linear bearing I. The upper end of the 5X10X15 linear bearing I is positioned and fixed by the top end of the micro linear servo driver, which can guide the extension rod of the micro linear servo driver.

[0013] In the described U-shaped plate assembly, the 5X10X15 linear bearing II is connected to the U-shaped base plate by a sliding pair. The special structure of the U-shaped base plate can limit the downward movement of the 5X10X15 linear bearing II. The U-shaped cover plate is fixed to the U-shaped base plate by 4 M4X10 hexagon socket head screws, and the 5X10X15 linear bearing II is fixed at the same time, which can realize the guiding of the outer vertical rod of the layered connecting rod assembly.

[0014] In the layered connecting rod assembly, one end of the four inner vertical rods I is respectively connected to the micro linear servo driver extension rod by threading, and the other end is fixedly connected to one end of the four inner horizontal rods through four inner nuts I, and the other end of the four inner horizontal rods is fixedly connected to the four inner vertical rods II through four inner nuts II; one end of the 12 middle vertical rods I is respectively connected to the micro linear servo driver extension rod by threading, and the other end is fixedly connected to one end of the 12 middle horizontal rods through 12 middle nuts I, and the other end of the 12 middle horizontal rods is fixedly connected to the 12 middle vertical rods II through 12 middle nuts II; one end of the 20 outer vertical rods I is respectively connected to the micro linear servo driver extension rod by threading, and the other end is fixedly connected to one end of the 20 outer horizontal rods through 20 outer nuts I, and the other end of the 20 outer horizontal rods is fixedly connected to the 20 outer vertical rods II through 20 outer nuts II. When each unit body can be driven and controlled independently, the unit body arrangement can be made more compact.

[0015] The multi-point tool head assembly is fixedly connected to the back plate assembly through the connecting plates on both sides thereof. The 4X6X10 sleeve in the multi-point tool head assembly is connected to the multi-point tool head base by a sliding pair. The special structure of the multi-point tool head base can limit the downward movement of the 4X6X10 sleeve. The multi-point tool head cover is fixedly connected to the multi-point tool head base by 4 M2X10 hexagon socket head screws, and the 4X6X10 sleeve is fixed at the same time; 36 unit bodies I are threadedly connected to the inner vertical rod II, the middle vertical rod II and the outer vertical rod II, and are connected to the 36 4X6X10 sleeves by a sliding pair; 36 universal ball bearings are threadedly connected to the lower part of the 36 unit bodies I. By controlling the expansion and contraction amount of each unit body 1, different free-form surfaces can be fitted.

[0016] A layered multi-point forming tool system and a unit body height calculation method, there are two main calculation methods, the first method is based on the NURBS surface principle, to calculate the lifting height of each unit body, it is necessary to calculate the contact point between the ball head and the surface, and then inversely calculate the coordinates of the ball center. A Kx1 NURBS surface patch can be expressed as:

[0017]

[0018] Among them, d i,j is the surface control vertex, ω i,j N is the weight factor associated with the surface control vertex; i,k (u) is the K-order canonical B-spline basis function, and its recursive form is:

[0019]

[0020] By moving a fixed distance d in the direction of the normal vector of each point on the surface p = p(u,v), we can get the points on the equidistant surface:

[0021]

[0022] in, is the unit normal vector of the tangent plane of the surface at point p(u,v), expressed as:

[0023]

[0024] Because the coordinates of the center of the sphere are required, the fixed distance d = r, and the resulting position is the center of the sphere, from which we can get:

[0025] p(u,v)+rn=p c (5)

[0026] In the formula, p c (x c ,y c ,z c ) is the coordinate of the center of the sphere, and x c With y c It is known that the vector equation can be transformed into a system of two-variable nonlinear equations:

[0027]

[0028] Using the bisection method or the gradient method, this set of equations can be solved to calculate the coordinates of the contact point. Assume that the coordinates of the contact point are (x, y, z), the radius of the ball head is r, and the coordinates of the vertex in the vertical direction of the ball head are (x0, y0, z0). Since the arrangement and spacing of the unit bodies are designed by ourselves and are known numbers, we only need to calculate z0, which is obtained from the following formula:

[0029]

[0030] The coordinates of the center of the sphere can be calculated, and the lifting height of the unit body can be determined.

[0031] The second method is to express the complex surface with a series of triangular faces. In this case, the tangent point is no longer the tangent point between the surface and the sphere, but the tangent point between the surface and the triangular face. Suppose the coordinates of the three vertices of a triangle are p i (x i ,y i ), p j (x j ,y j ), p k (x k ,y k ), then the plane equation of the triangle is:

[0032] Ax+By+Cz+D=0 (8)

[0033] The three vertices of the triangle are in the plane, so they satisfy:

[0034]

[0035] From (8) and (9), we can get:

[0036]

[0037] Using the center of the sphere p(x p ,y p ,z p ) to the triangle plane is R, and the equation is established:

[0038]

[0039] In the above formula (11), only z p is an unknown number, we can find z p for:

[0040]

[0041] Beneficial effects of the present invention:

[0042] The present invention proposes a layered multi-point forming tool system and a unit body height calculation method, and fits different free-form surfaces by adjusting the elongation of each unit body. The present invention adopts a layered connecting rod assembly to independently drive the unit body, which not only ensures the forming speed of the free-form surface, but also takes into account the density between the units, has high forming accuracy, and is widely applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is an axonometric diagram of the overall structure of the present invention.

[0044] Figure 2 It is an axonometric view of the upper plate of the present invention.

[0045] Figure 3 It is an axonometric view of the micro linear servo driver assembly of the present invention.

[0046] Figure 4 It is an axonometric view of the middle plate assembly of the present invention.

[0047] Figure 5 It is an axonometric view of the Huizi board assembly of the present invention.

[0048] Figure 6 It is a cross-sectional view of the components of the present invention.

[0049] Figure 7 It is an axonometric view of the layered connecting rod assembly of the present invention.

[0050] Figure 8 It is an axonometric view of the connecting plate of the present invention.

[0051] Fig. 9 It is an axonometric view of the multi-point tool head assembly of the present invention.

[0052] Fig.10 It is a cross-sectional view of a multi-point tool head assembly of the present invention.

[0053] Fig.11 It is a front view of the overall structure of the present invention.

[0054] Fig.12 It is a side view of the overall structure of the present invention.

[0055] Fig.13 It is a bottom view of the overall structure of the present invention.

[0056] Fig.14 It is a schematic diagram of the height calculation principle of the multi-point forming unit body based on the NURBS surface of the present invention.

[0057] Fig.15 It is a schematic diagram of the height calculation principle of the multi-point forming unit body based on the triangular grid of the present invention.

[0058] Description of reference numerals:

[0059] 1 - upper plate; 2 - micro linear servo drive assembly; 3 - middle plate assembly; 4 - back plate assembly; 5 - layered connecting rod assembly; 6 - M4X65 hexagon socket head screw; 7 - connecting plate; 8 - M4 hexagon nut; 9 - multi-point tool head assembly; 10 - M6X90 hexagon socket head screw; 11 - M6 hexagon nut; 12 - M6X65 hexagon socket head screw; 13 - positioning pin; 14 - M6 thin hexagon nut; 15 - M3X10 hexagon socket head screw;

[0060] 201——copper column; 202——M3 hexagonal nut; 203——gasket; 204——micro linear servo driver;

[0061] 301——middle plate; 302——5X10X15 linear bearing I;

[0062] 401——U-shaped cover plate; 402——M4X10 hexagon socket head screw; 403——U-shaped base plate; 404——5X10X15 linear bearing II;

[0063] 501 - inner vertical bar I; 502 - inner horizontal bar; 503 - inner nut II; 504 - inner nut I; 505 - inner vertical bar II; 506 - middle nut II; 507 - middle vertical bar I; 508 - middle horizontal bar; 509 - middle nut I; 510 - middle vertical bar II; 511 - outer vertical bar I; 512 - outer horizontal bar; 513 - outer nut I; 514 - outer nut II; 515 - outer vertical bar II;

[0064] 901——unit body I; 902——multi-point tool head cover; 903——M2X10 hexagon socket head screw; 904——multi-point tool head base; 905——universal ball bearing; 906——4X6X10 sliding sleeve; DETAILED DESCRIPTION

[0065] Combine the following Figures 1 to 15 , the present invention is further described:

[0066] like Figure 1As shown, a layered multi-point forming tool system of the present invention includes an upper plate 1, a micro linear servo drive group 2, a middle plate assembly 3, a return plate assembly 4, a layered connecting rod assembly 5, a connecting plate 7, a multi-point tool head assembly 9, 4 M4X65 hexagon socket head screws 6, 4 M4 hexagon nuts 8; a multi-point tool head assembly 9; 4 M6X90 hexagon socket head screws 10; 4 M6 hexagon nuts 11; 8 M6X65 hexagon socket head screws 12; 4 locating pins 13; 8 M6 thin hexagon nuts 14; 4 M3X10 hexagon socket head screws 15. The upper plate 1 is located at the top of the entire device, the micro linear servo driver group 2 is located directly below the upper plate 1, and is rigidly connected to the upper plate 1 through threads; the middle plate assembly 3 is located directly below the micro linear servo driver group 2, and the middle plate assembly 3 and the micro linear servo driver group 2 are connected by a sliding pair, and the middle plate assembly 3 and the upper plate 1 are rigidly connected by 4 M6X90 hexagon socket head screws 10 and 4 M6 hexagon nuts 11; the layered connecting rod assembly 5 is located directly below the middle plate assembly 3, and the layered connecting rod assembly 5 and the micro linear servo driver group 2 are rigidly connected by threads; the back plate assembly 4 is located directly below the middle plate assembly 3 and is rigidly connected to the micro linear servo driver group 2. The middle plate assembly 3 is rigidly connected by 4 locating pins 13 and 8 M6X65 hexagon socket head screws 12; the back-plate assembly 4 is located around the layered connecting rod assembly 5 and is connected to the layered connecting rod assembly 5 by a sliding pair; the multi-point tool head assembly 9 is located directly below the layered connecting rod assembly 5 and is rigidly connected to the layered connecting rod assembly by threads; the connecting plate 7 is located on both sides of the multi-point tool head assembly 9 and directly below the back-plate assembly 4, and is rigidly connected to the multi-point tool head assembly 9 by 4 M3X10 hexagon socket head screws 15, and is rigidly connected to the back-plate assembly 4 by 4 M4X65 hexagon socket head screws 6.

[0067] like Figure 2 As shown, the upper plate 1 of the present invention is used to fix the micro linear servo drive group 2 and the middle plate assembly 3.

[0068] like Figure 3 As shown, the micro linear servo driver group 2 of the present invention is composed of 36 copper pillars 201, 36 M3 hexagonal nuts 202, 36 washers 203, and 36 micro linear servo drivers 204, which can provide a power source for the movement of the entire device. The tails of the 36 micro linear servo drivers 204 in the micro linear servo driver group 2 are connected to the copper pillars 201 by threads, and the 36 copper pillars 201 are fixedly connected to the upper plate 1 by 36 M3 hexagonal nuts 202 and 36 washers 203.

[0069] like Figure 4As shown, the middle plate assembly 3 of the present invention is composed of a middle plate 301 and a 5X10X15 linear bearing 1302. In the middle plate assembly, the 5X10X15 linear bearing 1302 is connected to the middle plate 301 by a sliding pair. The special structure of the middle plate 301 can limit the downward movement of the 5X10X15 linear bearing 1302. The upper end of the 5X10X15 linear bearing 1302 is positioned and fixed by the top end of the micro linear servo driver 204, which can guide the extension rod of the micro linear servo driver 204.

[0070] like Figure 5 , 6 As shown, the Hui-shaped plate assembly 4 of the present invention is composed of a Hui-shaped cover plate 401, an M4X10 hexagon socket head screw 402, a Hui-shaped bottom plate 403 and a 5X10X15 linear bearing II404. The 5X10X15 linear bearing II404 in the Hui-shaped plate assembly 4 is connected to the Hui-shaped bottom plate 403 by a sliding pair, and the special structure of the Hui-shaped bottom plate 403 can limit the downward movement of the 5X10X15 linear bearing II404. The Hui-shaped cover plate 401 is fixedly connected to the Hui-shaped bottom plate 403 by four M4X10 hexagon socket head screws 402, and the 5X10X15 linear bearing II404 is fixed at the same time, so as to realize the guidance of the outer vertical rod II515 in the layered connecting rod assembly 5.

[0071] like Figure 7As shown, the layered connecting rod assembly 5 of the present invention is composed of 4 inner vertical rods I501, 4 inner horizontal rods 502, 4 inner nuts II503, 4 inner nuts I504, 4 inner vertical rods II505, 12 middle nuts II506, 12 middle vertical rods I507, 12 middle horizontal rods 508, 12 middle nuts I509, 12 middle vertical rods II510, 20 outer vertical rods I511, 20 outer horizontal rods 512, 20 outer nuts I513, 20 outer nuts II514 and 20 outer vertical rods II515. One end of the four inner vertical rods I501 in the layered connecting rod assembly 5 is respectively connected to the extension rod of the micro linear servo driver 204 by threading, and the other end is fixedly connected to one end of the four inner cross bars 502 through four inner nuts I504, and the other end of the four inner cross bars 502 is fixedly connected to the four inner vertical rods II505 through four inner nuts II503; one end of the twelve middle vertical rods I501 is respectively connected to the extension rod of the micro linear servo driver 204 by threading, and the other end is fixedly connected to one end of the twelve middle cross bars 508 through 12 middle nuts I509, and the other end of the twelve middle cross bars 508 is fixedly connected to the twelve middle vertical rods II510 through 12 middle nuts II506; one end of the twenty outer vertical rods I511 is respectively connected to the extension rod of the micro linear servo driver 204 by threading, and the other end is fixedly connected to the extension rod of the micro linear servo driver 204 through 20 outer nuts I 513 is fixedly connected to one end of 20 outer cross bars 512, and the other end of 20 outer cross bars 512 is fixedly connected to 20 outer vertical bars II 515 through 20 outer nuts II 514. When each unit body can be driven and controlled independently, the unit bodies can be arranged more closely.

[0072] like Figure 8 As shown, the connecting plate 7 of the present invention is located on both sides of the multi-point tool head assembly 9 and directly below the return plate assembly 4. It is rigidly connected to the multi-point tool head assembly 9 through four M3X10 hexagon socket head screws 15, and is rigidly connected to the return plate assembly 4 through four M4X65 hexagon socket head screws 6.

[0073] like Fig. 9 , 10As shown, the multi-point tool head assembly 9 of the present invention is composed of a unit body I901, a multi-point tool head cover plate 902, an M2X10 hexagon socket head screw 903, a multi-point tool head base 904, a universal ball 905 and a 4X6X10 sliding sleeve 906. The multi-point tool head assembly 9 is fixedly connected to the back plate assembly 4 through the connecting plates 7 located on both sides thereof. The 4X6X10 sleeve 906 in the multi-point tool head assembly 9 is connected to the multi-point tool head base 904 by a sliding pair. The special structure of the multi-point tool head base 904 can limit the downward movement of the 4X6X10 sleeve 906. The multi-point tool head cover 902 is fixed to the multi-point tool head base 904 by 4 M2X10 hexagon socket head screws 903, and the 4X6X10 sleeve 906 is fixed at the same time. The 36 unit bodies I901 are threadedly connected to the inner vertical rod II505, the middle vertical rod II510 and the outer vertical rod II515, and are connected to the 36 4X6X10 sleeves 906 by a sliding pair. The 36 universal ball bearings 905 are threadedly connected to the lower part of the 36 unit bodies I901. By controlling the expansion and contraction amount of each unit body 1906, different free-form surfaces can be fitted.

[0074] like Fig.11 , 12 As shown in , 13, the working steps of a layered multi-point forming tool system are as follows:

[0075] The tool system is mainly composed of an upper plate 1, a micro linear servo drive group 2, a middle plate assembly 3, a back plate assembly 4, a layered connecting rod assembly 5, a connecting plate 7, a multi-point tool head assembly 9, etc. Among them, the micro linear servo drive group 2 is fixed to the upper plate 1, and the micro linear servo drive group 2 drives the layered connecting rod assembly 5 to perform up and down linear motion. The middle plate assembly 3 and the back plate assembly 4 play a guiding role. The layered connecting rod assembly 5 drives the 36 unit bodies I901 in the multi-point tool head assembly 9 to perform up and down linear motion, and different free-form surfaces are fitted by adjusting the elongation of the 36 unit bodies I901.

[0076] like Fig.14 A layered multi-point forming tool system and a unit body height calculation method, there are two main calculation methods, the first method is based on the NURBS surface principle, to calculate the lifting height of each unit body, it is necessary to calculate the contact point between the ball head and the surface, and then inversely calculate the coordinates of the ball center. A Kx1 NURBS surface patch can be expressed as:

[0077]

[0078] Among them, d i,j is the surface control vertex, ω i,j N is the weight factor associated with the surface control vertex; i,k (u) is the K-order canonical B-spline basis function, and its recursive form is:

[0079]

[0080] By moving a fixed distance d in the direction of the normal vector of each point on the surface p = p(u,v), we can get the points on the equidistant surface:

[0081]

[0082] in, is the unit normal vector of the tangent plane of the surface at point p(u,v), expressed as:

[0083]

[0084] Because the coordinates of the center of the sphere are required, the fixed distance d = r, and the resulting position is the center of the sphere, from which we can get:

[0085] p(u,v)+rn=p c (5)

[0086] In the formula, p c (x c ,y c ,z c ) is the coordinate of the center of the sphere, and x c With y c It is known that the vector equation can be transformed into a system of two-variable nonlinear equations:

[0087]

[0088] Using the bisection method or the gradient method, this set of equations can be solved to calculate the coordinates of the contact point. Assume that the coordinates of the contact point are (x, y, z), the radius of the ball head is r, and the coordinates of the vertex in the vertical direction of the ball head are (x0, y0, z0). Since the arrangement and spacing of the unit bodies are designed by ourselves and are known numbers, we only need to calculate z0, which is obtained from the following formula:

[0089]

[0090] The coordinates of the center of the sphere can be calculated, and the lifting height of the unit body can be determined.

[0091] like Fig.15 A hierarchical multi-point forming tool system and a unit body height calculation method. The second method is to express the complex surface with a series of triangular faces. In this case, the tangent point is no longer the tangent point between the surface and the sphere, but the tangent point between the surface and the triangular face. Suppose the coordinates of the three vertices of a triangle are p i (x i ,y i ), p j (x j ,yj ), p k (x k ,y k ), then the plane equation of the triangle is:

[0092] Ax+By+Cz+D=0 (8)

[0093] The three vertices of the triangle are in the plane, so they satisfy:

[0094]

[0095] From (8) and (9), we can get:

[0096]

[0097] Using the center of the sphere p(x p ,y p ,z p ) to the triangle plane is R, and the equation is established:

[0098]

[0099] In the above formula (11), only z p is an unknown number, we can find z p for:

[0100]

[0101] The above description is only a preferred embodiment of this patent and is not intended to limit this patent. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this patent should be included in the scope of protection of this patent.

Claims

1. A layered multi-point forming tool system, characterized in that: The system comprises an upper plate (1), a micro linear servo drive group (2), a middle plate assembly (3), a back plate assembly (4), a layered connecting rod assembly (5), a connecting plate (7), a multi-point tool head assembly (9), 4 M4×65 hexagon socket head screws (6), 4 M4 hexagon nuts (8), a multi-point tool head assembly (9), 4 M6×90 hexagon socket head screws (10), 4 M6 hexagon nuts (11), 8 M6×65 hexagon socket head screws (12), 4 positioning pins (13), 8 M6 thin hexagon nuts (14), and 4 M3×10 hexagon socket head screws (15), wherein the upper plate (1) is located at the top of the entire device, the micro linear servo drive group (2) is located directly below the upper plate (1) and is rigidly connected to the upper plate (1) through threads, and the middle plate (2) is provided with a plurality of connecting rods. The plate assembly (3) is located directly below the micro linear servo drive assembly (2); the middle plate assembly (3) is connected to the micro linear servo drive assembly (2) by a sliding pair; the middle plate assembly (3) is rigidly connected to the upper plate (1) by four M6×90 hexagon socket head screws (10) and four M6 hexagon nuts (11); the layered connecting rod assembly (5) is located directly below the middle plate assembly (3); the layered connecting rod assembly (5) is rigidly connected to the micro linear servo drive assembly (2) by threads; the back plate assembly (4) is located directly below the middle plate assembly (3) and is rigidly connected to the middle plate assembly (3) by four The back plate assembly (4) is located around the layered connecting rod assembly (5) and is connected to the layered connecting rod assembly (5) by a sliding pair. The multi-point tool head assembly (9) is located directly below the layered connecting rod assembly (5) and is rigidly connected to the layered connecting rod assembly by threads. The connecting plate (7) is located on both sides of the multi-point tool head assembly (9) and is located directly below the back plate assembly (4). It is rigidly connected to the multi-point tool head assembly (9) by four M3×10 hexagon socket head screws (15) and is connected to the back plate assembly (4). The plate assembly (4) is rigidly connected via four M4×65 hexagon socket head screws (6); the micro linear servo drive group (2) is composed of 36 copper pillars (201), 36 M3 hexagon nuts (202), 36 washers (203), and 36 micro linear servo drives (204); the tails of the 36 micro linear servo drives (204) in the micro linear servo drive group are connected to the copper pillars (201) by threads, and the 36 copper pillars are fixedly connected to the upper plate (1) via 36 M3 hexagon nuts (202) and 36 washers (203);The layered connecting rod assembly (5) comprises 4 inner vertical rods I (501), 4 inner horizontal rods (502), 4 inner nuts II (503), 4 inner nuts I (504), 4 inner vertical rods II (505), 12 middle nuts II (506), 12 middle vertical rods I (507), 12 middle horizontal rods (508), 12 middle nuts I (509), 12 middle vertical rods II (510), 20 outer vertical rods I (511), 20 outer horizontal rods (512), 20 outer nuts I (513), 20 outer nuts II (514) and 20 The layered connecting rod assembly (5) is composed of outer vertical rods II (515), one end of the four inner vertical rods I (501) in the layered connecting rod assembly (5) is respectively connected to the extension rod of the micro linear servo driver (204) by threading, and the other end is fixedly connected to one end of the four inner horizontal rods (502) through four inner nuts I (504), and the other end of the four inner horizontal rods (502) is fixedly connected to the four inner vertical rods II (505) through four inner nuts II (503), and one end of the twelve middle vertical rods I (507) is respectively connected to the extension rod of the micro linear servo driver (204) by threading, and the other end is fixedly connected to the four inner horizontal rods (502) through four inner nuts II (503). (509) is fixedly connected to one end of the 12 middle-layer cross bars (508), the other end of the 12 middle-layer cross bars (508) is fixedly connected to the 12 middle-layer vertical bars II (510) through 12 middle-layer nuts II (506), one end of the 20 outer-layer vertical bars I (511) is respectively connected to the extension rod of the micro linear servo driver (204) by threading, and the other end is fixedly connected to one end of the 20 outer-layer cross bars (512) through 20 outer-layer nuts I (513), and the other end of the 20 outer-layer cross bars (512) is fixedly connected to the 20 outer-layer vertical bars II (515) through 20 outer-layer nuts II (514). ; 2. A layered multi-point forming tool system according to claim 1, characterized in that: The upper plate (1) is a porous plate used to fix the micro linear servo drive assembly (2) and the middle plate assembly (3).

3. A layered multi-point forming tool system according to claim 1, characterized in that: The middle plate assembly (3) is composed of a middle plate (301) and a 5×10×15 linear bearing I (302). The 5×10×15 linear bearing I (302) and the middle plate (301) in the middle plate assembly are connected by a sliding pair. The special structure of the middle plate (301) can limit the downward movement of the 5×10×15 linear bearing I (302). The upper end of the 5×10×15 linear bearing I (302) is positioned and fixed by the top end of the micro linear servo driver (204), so as to realize the guidance of the extension rod of the micro linear servo driver (204).

4. A layered multi-point forming tool system according to claim 1, characterized in that: The back plate assembly (4) is composed of a back plate (401), an M4×10 hexagon socket head screw (402), a back plate (403) and a 5×10×15 linear bearing II (404). The 5×10×15 linear bearing II (404) and the back plate (403) are connected by a sliding pair. The special structure of the back plate (403) can limit the downward movement of the 5×10×15 linear bearing II (404). The back plate (401) is fixedly connected to the back plate (403) by four M4×10 hexagon socket head screws (402), and the 5×10×15 linear bearing II (404) is fixed at the same time.

5. A layered multi-point forming tool system according to claim 1, characterized in that: The multi-point tool head assembly (9) is composed of a unit body I (901), a multi-point tool head cover plate (902), an M2×10 hexagon socket head screw (903), a multi-point tool head base (904), a universal ball bearing (905) and a 4×6×10 sliding sleeve (906). The multi-point tool head assembly (9) is fixedly connected to the back plate assembly (4) via connecting plates (7) located on both sides thereof. The 4×6×10 sliding sleeve (906) in the multi-point tool head assembly (9) is connected to the multi-point tool head base (904) by a sliding pair. The special structure of the multi-point tool head base (904) can limit the 4 The multi-point tool head cover plate (902) is fixedly connected to the multi-point tool head base (904) by four M2×10 hexagon socket head screws (903) and the 4×6×10 sleeve (906) is fixed at the same time. The 36 unit bodies I (901) are threadedly connected to the inner vertical rod II (505), the middle vertical rod II (510) and the outer vertical rod II (515), and are connected to the 36 4×6×10 sleeves (906) by sliding pairs. The 36 universal ball bearings (905) are threadedly connected to the lower part of the 36 unit bodies I (901).

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