A method for generating and positioning the size of a blank holder guide plate

Abstract

The application provides a size generation and positioning method of a blank holder guide plate, comprising the following steps: obtaining mold parameters and position information of center lines of outer ring main ribs of upper and lower mold bases, the mold parameters comprising a parting surface, a mold stroke, a main rib thickness, a gap from the blank holder to the lower mold base, a guide plate mounting surface thickness, a guide plate mounting surface reverse bevel distance, a lower flange offset height, an end adjustment amount, a guide plate back support thickness and a blank holder engagement amount; obtaining size information of the blank holder guide plate according to the mold parameters and the position information of the center lines of the outer ring main ribs of the upper and lower mold bases; and obtaining positioning information of the blank holder guide plate according to the size information of the blank holder guide plate, the position information of the center lines of the outer ring main ribs of the upper and lower mold bases and the mold parameters. The application can quickly and accurately obtain the size and mounting position of the blank holder guide plate, and improve the production and assembly efficiency of the mold.

Description

Technical Field

[0001] This invention belongs to the field of intelligent mold design and manufacturing technology, specifically relating to a method for generating and positioning the dimensions of a pressure ring guide plate. Background Technology

[0002] The blank holder is a component in a machining die, primarily used for pressing the workpiece during the die-making process. It increases the friction between the workpiece and the punch, preventing wrinkling of the workpiece wall or flange. The guide plate, a plate-shaped guiding component, guides the blank holder during the pressing process, ensuring it is aligned and presses firmly against the workpiece. This prevents deviations in the pressing process, which could lead to pressing failure and wrinkling of the workpiece wall or flange.

[0003] In existing technologies, the generation of the blank holder guide plate's dimensions is usually a trial-and-error process. This involves manually checking whether the blank holder guide plate interferes with surrounding components during mold processing, and then designing and repeatedly modifying the dimensions of the blank holder guide plate accordingly. It also involves manually checking whether the blank holder guide plate in the mold's virtual model can correctly guide the blank holder, and repeatedly adjusting the blank holder's position. However, this trial-and-error process requires a significant amount of time for virtual experiments and adjustments, leading to low efficiency in mold production and assembly. Furthermore, the trial-and-error process is subject to chance; even if the dimensions and position of the blank holder guide plate do not interfere in a particular virtual experiment, and the processed workpiece does not wrinkle, it is still impossible to determine whether the dimensions and position of the blank holder guide plate have reached an optimal state. Summary of the Invention

[0004] This invention aims to solve the technical problems existing in the prior art and provides a method for generating and positioning the size of the pressure ring guide plate, which can quickly and accurately obtain the size and installation position of the pressure ring guide plate, thereby improving the production and assembly efficiency of the mold.

[0005] To achieve the above-mentioned objectives of the present invention, according to a first aspect of the present invention, the present invention provides a method for generating and positioning the dimensions of a blank holder guide plate, comprising the following steps: obtaining mold parameters and position information of the center lines of the outer ring main ribs of the upper and lower mold bases, wherein the mold parameters include parting surface, mold stroke, main rib thickness, gap between the blank holder and the lower mold base, guide plate mounting surface thickness, chamfer distance of the guide plate mounting surface, lower flange offset height, end adjustment amount, guide plate back support thickness, and blank holder engagement amount; obtaining the dimension information of the blank holder guide plate based on the mold stroke, main rib thickness, position information of the center lines of the outer ring main ribs of the upper and lower mold bases, and gap between the blank holder and the lower mold base; obtaining the positioning information of the blank holder guide plate based on the dimension information of the blank holder guide plate, position information of the center lines of the outer ring main ribs of the upper and lower mold bases, main rib thickness, gap between the blank holder and the lower mold base, guide plate mounting surface thickness, chamfer distance of the guide plate mounting surface, parting surface, lower flange offset height, end adjustment amount, guide plate back support thickness, and blank holder engagement amount.

[0006] Furthermore, the size information of the pressure ring guide plate includes the guide plate length and the guide plate width; the specific steps to obtain the size information of the pressure ring guide plate are as follows: obtain the guide plate length according to the mold stroke; obtain the guide plate width according to the main rib thickness, the position information of the center line of the main rib of the outer ring of the upper and lower mold bases, and the gap between the pressure ring and the lower mold base.

[0007] Furthermore, the center lines of the outer ring main ribs of the upper and lower mold bases include the center lines of the first, second, third, and fourth main ribs; the guide plates of the pressure ring include front and rear guide plates and left and right guide plates; the specific steps for obtaining the guide plate width are as follows: calculate the first intermediate dimension based on the position information of the center lines of the first and third main ribs, the thickness of the main ribs, and the gap between the pressure ring and the lower mold base; obtain the guide plate width of the front and rear guide plates based on the first intermediate dimension; calculate the second intermediate dimension based on the position information of the center lines of the second and fourth main ribs, the thickness of the main ribs, and the gap between the pressure ring and the lower mold base; obtain the guide plate width of the left and right guide plates based on the second intermediate dimension.

[0008] Furthermore, the calculation process for the first intermediate dimension is as follows: l1 = X z3 -X z1 -T2-2D; The calculation process for the second intermediate dimension is as follows: l2=Y z4 -Y z2 -T2-2D; where l1 represents the first intermediate dimension, X z3 This indicates the location information of the centerline of the third main reinforcement bar, X. z1 This indicates the position information of the center line of the first main rib, T2 indicates the thickness of the main rib, D indicates the gap between the pressure ring and the lower die base, l2 indicates the second intermediate dimension, and Y... z4 This indicates the location information of the centerline of the fourth main reinforcement bar, Y. z2 This indicates the location information of the centerline of the second main reinforcement bar.

[0009] Furthermore, the positioning information of the blank holder guide plate includes the three-dimensional coordinate values ​​of the blank holder guide plate in absolute coordinates. The specific steps for obtaining the positioning information of the blank holder guide plate are as follows: based on the size information of the blank holder guide plate, the position information of the center line of the outer ring main rib of the upper and lower mold bases, the gap between the blank holder and the lower mold base, the thickness of the guide plate mounting surface, the chamfer distance of the guide plate mounting surface, and the thickness of the main rib, obtain the three-dimensional coordinate X value and the three-dimensional coordinate Y value of the blank holder guide plate; based on the position information of the center line of the outer ring main rib of the upper and lower mold bases, the parting surface, the offset height of the lower flange, the thickness of the main rib, the gap between the blank holder and the lower mold base, the end adjustment amount, the thickness of the guide plate back support, the engagement amount of the blank holder, and the mold stroke, obtain the three-dimensional coordinate Z value of the blank holder guide plate.

[0010] Further, the steps for obtaining the three-dimensional coordinate Z value of the blank holder guide plate are as follows: Offset the parting surface along the Z direction of the absolute coordinates to obtain a first reference surface, making the gap between the first reference surface and the parting surface equal to the offset height of the lower flange; connect the center lines of the main ribs of the outer ring of the upper and lower mold bases into a closed curve based on the position information of the center lines; reduce the closed curve with the center point of the closed curve as the origin to obtain the outer contour line of the blank holder; offset the outer contour line of the blank holder along the Z direction of the absolute coordinates to obtain a second reference surface; obtain the coordinate Z value of the lowest point on the intersection line of the second reference surface and the first reference surface; round the coordinate Z value of the lowest point on the intersection line to the nearest five to obtain a first intermediate value; obtain the three-dimensional coordinate Z value of the blank holder guide plate based on the first intermediate value, the end adjustment amount, the guide plate back support thickness, the blank holder engagement amount, and the mold stroke.

[0011] Furthermore, the calculation process for the three-dimensional coordinate Z value of the pressure ring guide plate is as follows: Z = z1 + z2 - B1 - HS t Where Z represents the three-dimensional coordinate Z value of the pressure ring guide plate, z1 represents the first intermediate value, z2 represents the Z-axis adjustment amount at the end, B1 represents the thickness of the guide plate back support, H represents the engagement amount of the pressure ring, and S t Indicates the mold stroke.

[0012] Furthermore, the blank holder guide plate includes a first guide plate, a second guide plate, a third guide plate, a fourth guide plate, a fifth guide plate, a sixth guide plate, a seventh guide plate, and an eighth guide plate; the calculation process of the three-dimensional coordinate X value of the blank holder guide plate is as follows: Where X1 represents the three-dimensional coordinate X-value of the first guide plate, X2 represents the three-dimensional coordinate X-value of the second guide plate, X3 represents the three-dimensional coordinate X-value of the third guide plate, X4 represents the three-dimensional coordinate X-value of the fourth guide plate, X5 represents the three-dimensional coordinate X-value of the fifth guide plate, X6 represents the three-dimensional coordinate X-value of the sixth guide plate, X7 represents the three-dimensional coordinate X-value of the seventh guide plate, and X8 represents the three-dimensional coordinate X-value of the eighth guide plate. z1 This indicates the location information of the centerline of the first main reinforcement bar, X. z3 The information indicates the position of the center line of the third main rib, D indicates the gap between the pressure ring and the lower mold base, B2 indicates the thickness of the guide plate mounting surface, B3 indicates the chamfer distance of the guide plate mounting surface, T2 indicates the thickness of the main rib, and WX indicates the guide plate width of the front and rear side guide plates.

[0013] Furthermore, the blank holder guide plate includes a first guide plate, a second guide plate, a third guide plate, a fourth guide plate, a fifth guide plate, a sixth guide plate, a seventh guide plate, and an eighth guide plate; the calculation process for the three-dimensional coordinate Y value of the blank holder guide plate is as follows: Where Y1 represents the 3D Y-value of the first guide plate, Y2 represents the 3D Y-value of the second guide plate, Y3 represents the 3D Y-value of the third guide plate, Y4 represents the 3D Y-value of the fourth guide plate, Y5 represents the 3D Y-value of the fifth guide plate, Y6 represents the 3D Y-value of the sixth guide plate, Y7 represents the 3D Y-value of the seventh guide plate, and Y8 represents the 3D Y-value of the eighth guide plate. z2 This indicates the location information of the centerline of the second main reinforcement bar, Y. z4 The information indicates the position of the center line of the fourth main rib, D indicates the gap between the pressure ring and the lower mold base, B2 indicates the thickness of the guide plate mounting surface, B3 indicates the chamfer distance of the guide plate mounting surface, T2 indicates the thickness of the main rib, and WY indicates the guide plate width of the left and right side guide plates.

[0014] Furthermore, the process of obtaining the position information of the center lines of the outer ring main ribs of the upper and lower mold bases is as follows: Based on the absolute coordinate values, obtain the X and Y values ​​of all ejector pin holes, obtain the ejector pin distance, and obtain the maximum, minimum, maximum, and minimum values ​​of X, Y, and Y based on the X and Y values ​​of all ejector pin holes; obtain the ejector pin distance and the blank holder strength coefficient; and obtain the position information of the center lines of the outer ring main ribs of the upper and lower mold bases based on the maximum, minimum, maximum, and minimum values ​​of X, Y, ejector pin distance, and blank holder strength coefficient; the formula for obtaining the position information of the center lines of the outer ring main ribs of the upper and lower mold bases is as follows: X Z1 =X Kmin -a*nC;Y Z2 =Y Kmin -a*nC;X Z3 =X Kmax +a*n+C;Y Z4 =Y Kmax +a*n+C; where X Z1 This indicates the location information of the centerline of the first main reinforcement bar, Y. Z2 This indicates the location information of the centerline of the second main reinforcement bar, X. Z3 This indicates the location information of the centerline of the third main reinforcement bar, Y. Z4 This indicates the location information of the centerline of the fourth main reinforcement bar, X. Kmax X represents the maximum value of X. Kmin Y represents the minimum value of X. Kmax This represents the maximum value of Y. Kmin The value represents the minimum value of Y, a represents the distance between the push rods, n represents the strength coefficient of the pressure ring, and C is the first constant.

[0015] The technical principle and beneficial effects of this invention are as follows: This invention obtains the size information of the pressure ring guide plate by using mold parameters and the position information of the center lines of the main ribs of the outer rings of the upper and lower molds. Based on the size information of the pressure ring guide plate, mold parameters, and the center lines of the main ribs of the outer rings of the upper and lower molds, the position information of the pressure ring guide plate is obtained. This invention quickly calculates the size and positioning information of the pressure ring guide plate based on mold parameters, so that the pressure ring guide plate does not interfere with other parts during processing and can accurately press the workpiece onto the punch without the need for manual design, estimation, and repeated modifications. At the same time, it improves the accuracy of the size and positioning of the pressure ring guide plate and improves the production and assembly efficiency of the mold. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating a method for generating and positioning the dimensions of a pressure ring guide plate according to the present invention.

[0017] Figure 2 This is a schematic diagram showing the position of the center line of the main ribs on the outer ring of the upper and lower mold bases of the present invention;

[0018] Figure 3 This is a schematic diagram showing the position of the minimum width dimension of the pressure ring of the present invention.

[0019] Attached reference numerals: 1. Centerline of the first main rib; 2. Centerline of the second main rib; 3. Centerline of the third main rib; 4. Centerline of the fourth main rib; 5. Top rod hole; 6. X-axis of absolute coordinates; 7. Y-axis of absolute coordinates; 8. Parting line. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] As attached Figure 1 As shown, the present invention provides a method for generating and positioning the dimensions of a pressure ring guide plate, comprising the following steps:

[0023] Obtain mold parameters and the position information of the center line of the outer ring main rib of the upper and lower mold bases. Mold parameters include parting surface, mold stroke, main rib thickness, gap between the pressure ring and the lower mold base, guide plate mounting surface thickness, chamfer distance of the guide plate mounting surface, lower flange offset height, end adjustment amount, guide plate back support thickness and pressure ring engagement amount.

[0024] The dimensions of the pressure ring guide plate are obtained based on the mold stroke, main rib thickness, position information of the center line of the main ribs on the outer ring of the upper and lower mold bases, and the gap between the pressure ring and the lower mold base.

[0025] The positioning information of the pressure ring guide plate is obtained based on the size information of the pressure ring guide plate, the position information of the center line of the outer ring main rib of the upper and lower mold bases, the thickness of the main rib, the gap between the pressure ring and the lower mold base, the thickness of the guide plate mounting surface, the chamfer distance of the guide plate mounting surface, the parting surface, the offset height of the lower flange, the end adjustment amount, the thickness of the guide plate back support, and the engagement amount of the pressure ring.

[0026] As attached Figure 2 As shown, the center lines of the outer ring main ribs of the upper and lower mold bases include the first main rib center line 1, the second main rib center line 2, the third main rib center line 3, and the fourth main rib center line 4. Specifically, the first main rib center line 1 and the third main rib center line 3 are parallel to the Y-axis 7 of the absolute coordinate system. Therefore, the position information of the first main rib center line 1 is the X value of the first main rib center line 1, and the position information of the third main rib center line 3 is the X value of the third main rib center line 3. The second main rib center line 2 and the fourth main rib center line 4 are parallel to the X-axis 6 of the absolute coordinate system. Therefore, the position information of the second main rib center line 2 is the Y value of the second main rib center line 2, and the position information of the fourth main rib center line 4 is the Y value of the fourth main rib center line 4.

[0027] The dimensions of the blank holder guide plate include the guide plate length and the guide plate width. The specific steps to obtain the dimensions of the blank holder guide plate are as follows: obtain the guide plate length based on the mold stroke; obtain the guide plate width based on the main rib thickness, the position information of the center line of the main ribs on the outer ring of the upper and lower mold bases, and the gap between the blank holder and the lower mold base.

[0028] In this embodiment, the process of obtaining the guide plate length is as follows:

[0029] Obtain the mold stroke. If the mold stroke is less than 30mm, then the guide plate length is 100mm.

[0030] If the mold stroke is greater than or equal to 30mm but less than 50mm, then the guide plate length should be 125mm.

[0031] If the mold stroke is greater than or equal to 50mm but less than 100mm, then the guide plate length should be 150mm.

[0032] If the mold stroke is greater than or equal to 100mm but less than 150mm, then the guide plate length should be 200mm.

[0033] If the mold stroke is greater than or equal to 150mm, then the guide plate length should be 250mm.

[0034] In this embodiment, the pressure ring guide plate is divided into front and rear side guide plates and left and right side guide plates. The specific steps for obtaining the guide plate width of the front and rear side guide plates are as follows: the first intermediate dimension is calculated based on the position information of the center line 1 of the first main rib, the position information of the center line 3 of the third main rib, the thickness of the main rib, and the gap between the pressure ring and the lower die base. The calculation process of the first intermediate dimension is as follows:

[0035] l1 = X z3 -X z1 -T2-2D

[0036] Where l1 represents the first intermediate dimension, X z3 This indicates the location information of the centerline 3 of the third main reinforcement bar, X. z1 The position information of the center line 1 of the first main rib is indicated, T2 represents the thickness of the main rib, and D represents the gap between the pressure ring and the lower mold base. In this embodiment, T2 is 40mm or 50mm, and the gap between the pressure ring and the lower mold base is 40mm. In other embodiments, the thickness of the main rib and the gap between the pressure ring and the lower mold base are obtained according to the mold process or industry regulations.

[0037] In this embodiment, the process of obtaining the guide plate width of the front and rear side guide plates is as follows:

[0038] If the first intermediate dimension is less than 750mm, then the width of the front and rear guide plates shall be 75mm.

[0039] If the first intermediate dimension is greater than or equal to 750mm and less than 1000mm, then the width of the front and rear guide plates shall be 100mm.

[0040] If the first intermediate dimension is greater than or equal to 1000mm and less than 1500mm, then the width of the front and rear guide plates shall be 125mm.

[0041] If the first intermediate dimension is greater than or equal to 1500mm and less than 2000mm, then the width of the front and rear guide plates shall be 150mm.

[0042] If the first intermediate dimension is greater than or equal to 2000mm, then the width of the front and rear guide plates shall be 200mm.

[0043] The specific steps for obtaining the guide plate widths of the left and right side guide plates are as follows: Calculate the second intermediate dimension based on the position information of the center line 2 of the second main rib, the position information of the center line 4 of the fourth main rib, the thickness of the main rib, and the gap between the pressure ring and the lower mold base. The calculation process for the second intermediate dimension is as follows:

[0044] l2 = Y z4 -Y z2 -T2-2D

[0045] Where l2 represents the second intermediate dimension, Y z4 This indicates the location information of the centerline 4 of the fourth main reinforcement bar, Y. z2 This indicates the position information of the center line 2 of the second main rib, T2 represents the thickness of the main rib, and D represents the gap between the pressure ring and the lower die base;

[0046] In this embodiment, the process of obtaining the guide plate widths of the left and right side guide plates is as follows:

[0047] If the second intermediate dimension is less than 750mm, then the width of the guide plate on the left and right sides shall be 75mm.

[0048] If the second intermediate dimension is greater than or equal to 750mm and less than 1000mm, then the width of the left and right side guide plates shall be 100mm.

[0049] If the second intermediate dimension is greater than or equal to 1000mm and less than 1500mm, then the width of the guide plate on the left and right sides shall be 125mm.

[0050] If the second intermediate dimension is greater than or equal to 1500mm and less than 2000mm, then the width of the guide plate on the left and right sides shall be 150mm.

[0051] If the second intermediate dimension is greater than or equal to 2000mm, then the width of the guide plates on the left and right sides shall be 200mm.

[0052] The positioning information of the pressure ring guide plate is calculated based on the obtained length and width. The positioning information includes the three-dimensional coordinates (X, Y, Z) of the pressure ring guide plate in absolute coordinates. The specific steps for obtaining the positioning information of the pressure ring guide plate are as follows:

[0053] The three-dimensional X-coordinate and three-dimensional Y-coordinate of the pressure ring guide plate are obtained based on the size information of the pressure ring guide plate, the position information of the center line of the outer ring main rib of the upper and lower mold bases, the gap between the pressure ring and the lower mold base, the thickness of the guide plate mounting surface, the chamfer distance of the guide plate mounting surface and the thickness of the main rib.

[0054] The three-dimensional coordinate Z value of the pressure ring guide plate is obtained based on the position information of the center line of the outer ring main rib of the upper and lower mold bases, the parting surface, the offset height of the lower flange, the thickness of the main rib, the gap between the pressure ring and the lower mold base, the end adjustment amount, the thickness of the guide plate back support, the engagement amount of the pressure ring, and the mold stroke.

[0055] The specific steps for obtaining the three-dimensional coordinate Z value of the pressure ring guide plate are as follows:

[0056] The parting surface is offset along the Z direction of the absolute coordinate to obtain the first reference surface, and the gap between the first reference surface and the parting surface is equal to the offset height of the lower flange. In this embodiment, the offset height of the lower flange is 20mm. In other embodiments, the parting surface and the offset height of the lower flange are obtained according to the mold process.

[0057] Based on the position information of the center lines of the main ribs of the outer ring of the upper and lower mold bases, the center lines of the main ribs of the outer ring of the upper and lower mold bases are connected to form a closed curve. The closed curve is reduced at equal intervals to obtain the outer contour line of the pressure ring. The gap between the outer contour line of the pressure ring and the closed curve is the first gap value. The outer contour line of the pressure ring is stretched bidirectionally along the Z direction of the absolute coordinate to form a second reference surface. Specifically, the unidirectional stretching length is greater than the mold height.

[0058] Obtain the coordinate Z value of the lowest point on the intersection line of the second reference plane and the first reference plane, and then process the coordinate Z value of the lowest point on the intersection line into five to obtain the first intermediate value;

[0059] The three-dimensional coordinate Z value of the pressure ring guide plate is obtained based on the first intermediate value, end adjustment amount, guide plate back support thickness, pressure ring engagement amount, and mold stroke.

[0060] Specifically, the calculation process for the first gap value is as follows:

[0061]

[0062] Where A1 represents the first gap value, T2 represents the thickness of the main rib, and B represents the gap between the pressure ring and the lower mold base.

[0063] Specifically, in this embodiment, the rounding process involves rounding the Z-value of the lowest point to a multiple of 5. For example, among numbers 0 to 5, numbers less than 2.5 become 0 after rounding, and numbers greater than or equal to 2.5 become 5. Among numbers 5 to 10, numbers less than 7.5 become 5, and numbers greater than or equal to 7.5 become 10. For instance, coordinate values ​​1 and 2.2 become 0 after rounding, coordinate values ​​2.8 and 4 become 5, coordinate values ​​6 and 7.4 become 5, and coordinate values ​​7.5 and 9 become 10. The advantage of rounding is that it facilitates measurement by fitters, and the processed part dimensions are all multiples of 5, making positioning and marking during machining more convenient.

[0064] The calculation process for the three-dimensional coordinate Z value of the pressure ring guide plate is as follows:

[0065] Z = z1 + z2 - B1 - HS t

[0066] Where Z represents the three-dimensional coordinate Z value of the pressure ring guide plate, z1 represents the first intermediate value, z2 represents the Z-axis adjustment amount at the end, B1 represents the thickness of the guide plate back support, H represents the engagement amount of the pressure ring, and S t This indicates the mold stroke. In this embodiment, the Z-axis adjustment of the end is 0mm. In other embodiments, the Z-axis adjustment of the end can be 5mm, 10mm, etc., and the specific value is set according to the requirements. The thickness of the guide plate back support is preferably 30mm, the engagement amount of the pressure ring is preferably 100mm, and the mold stroke is preferably 100mm. In other embodiments, the Z-axis adjustment of the end, the thickness of the guide plate back support, the engagement amount of the pressure ring, and the mold stroke are all obtained according to the mold process or industry regulations.

[0067] The pressure ring guide plate includes a first guide plate, a second guide plate, a third guide plate, a fourth guide plate, a fifth guide plate, a sixth guide plate, a seventh guide plate, and an eighth guide plate; the three-dimensional coordinate Z values ​​of the first guide plate to the eighth guide plate are all the same; the calculation process of the X and Y values ​​of the first guide plate to the eighth guide plate is as follows.

[0068] The calculation process for the three-dimensional coordinate X value of the pressure ring guide plate is as follows:

[0069]

[0070]

[0071]

[0072]

[0073]

[0074]

[0075]

[0076]

[0077] Where X1 represents the three-dimensional coordinate X-value of the first guide plate, X2 represents the three-dimensional coordinate X-value of the second guide plate, X3 represents the three-dimensional coordinate X-value of the third guide plate, X4 represents the three-dimensional coordinate X-value of the fourth guide plate, X5 represents the three-dimensional coordinate X-value of the fifth guide plate, X6 represents the three-dimensional coordinate X-value of the sixth guide plate, X7 represents the three-dimensional coordinate X-value of the seventh guide plate, and X8 represents the three-dimensional coordinate X-value of the eighth guide plate. z1 This indicates the position information of the centerline 1 of the first main reinforcement bar, X. z3 This indicates the position information of the center line 3 of the third main rib, D indicates the gap between the pressure ring and the lower mold base, B2 indicates the thickness of the guide plate mounting surface, B3 indicates the chamfer distance of the guide plate mounting surface, T2 indicates the thickness of the main rib, and WX indicates the guide plate width of the front and rear side guide plates.

[0078] The calculation process for the three-dimensional Y-coordinate value of the pressure ring guide plate is as follows:

[0079]

[0080]

[0081]

[0082]

[0083]

[0084]

[0085]

[0086]

[0087] Where Y1 represents the 3D Y-value of the first guide plate, Y2 represents the 3D Y-value of the second guide plate, Y3 represents the 3D Y-value of the third guide plate, Y4 represents the 3D Y-value of the fourth guide plate, Y5 represents the 3D Y-value of the fifth guide plate, Y6 represents the 3D Y-value of the sixth guide plate, Y7 represents the 3D Y-value of the seventh guide plate, and Y8 represents the 3D Y-value of the eighth guide plate. z2 This indicates the position information of the centerline 2 of the second main reinforcement bar, Y. z4 This indicates the position information of the center line 4 of the fourth main rib, D indicates the gap between the pressure ring and the lower mold base, B2 indicates the thickness of the guide plate mounting surface, B3 indicates the chamfer distance of the guide plate mounting surface, T2 indicates the thickness of the main rib, and WY indicates the guide plate width of the left and right side guide plates.

[0088] In this embodiment, the gap between the pressure ring and the lower die base is preferably 40mm; the thickness of the guide plate mounting surface is preferably 10mm; the thickness of the main rib is preferably 40mm or 50mm; and the chamfer angle of the guide plate mounting surface is preferably 15mm. In other embodiments, the gap between the pressure ring and the lower die base, the thickness of the guide plate mounting surface, and the chamfer angle distance of the guide plate mounting surface are obtained according to the mold process settings or industry regulations.

[0089] In this embodiment, the process of obtaining the position information of the center lines of the outer ring main ribs of the upper and lower mold bases is as follows:

[0090] Since the mold needs to avoid all ejector pins on the mold bed, the X and Y values ​​of all ejector pin holes 5 on the mold bed are obtained based on the absolute coordinate values ​​to obtain the ejector pin distance. Based on the X and Y values ​​of all ejector pin holes 5, the maximum value of X, the minimum value of X, the maximum value of Y, and the minimum value of Y are obtained.

[0091] The position information of the center lines of the outer ring main ribs of the upper and lower mold bases is obtained by using the maximum and minimum values ​​of the ejector pin hole X, the maximum and minimum values ​​of the ejector pin hole Y, the ejector pin distance, and the pressure ring strength coefficient. The formula for obtaining the position information of the center lines of the outer ring main ribs of the upper and lower mold bases is as follows:

[0092] X Z1 =X Kmin -a*n1-C

[0093] Y Z2 =Y Kmin -a*n2-C

[0094] X Z3 =X Kmax +a*n3+C

[0095] Y Z4 =Y Kmax +a*n4+C

[0096] Among them, X Z1 This indicates the position information of the centerline 1 of the first main reinforcement bar, Y. Z2 This indicates the location information of the centerline 2 of the second main reinforcement bar, X. Z3 This indicates the location information of the centerline 3 of the third main reinforcement bar, Y. Z4 This indicates the location information of the centerline 4 of the fourth main reinforcement bar, X. Kmax This represents the maximum value of the X value for the push rod hole. Kmin The minimum value of X for the push rod hole, Y Kmax This represents the maximum value of the Y-value of the push rod hole. Kmin The value represents the minimum Y-value of the ejector pin hole, 'a' represents the ejector pin distance, 'n1' represents the strength coefficient of the first pressure ring, 'n2' represents the strength coefficient of the second pressure ring, 'n3' represents the strength coefficient of the third pressure ring, 'n4' represents the strength coefficient of the fourth pressure ring, and 'C' is a first constant. In this embodiment, the ejector pin distance 'a' is preferably 150mm; when the main rib thickness is 50mm, the value range of the first constant 'C' is 75mm to 85mm; when the main rib thickness is 40mm, the value range of the first constant 'C' is 75mm to 90mm; in other embodiments, the ejector pin distance 'a' is obtained according to the parameters of the actual mold bed.

[0097] As attached Figure 3 The value of the blank holder strength coefficient, as indicated by the arrow, is determined as follows: Assuming an initial value of 1 for n, the intermediate value A is calculated based on the position information of the center lines of the main ribs on the outer rings of the upper and lower mold bases, the thickness of the main ribs, and the distance between the blank holder and the lower mold base. The intermediate value includes a first reference value A1, a second reference value A2, a third reference value A3, and a fourth reference value A4. The calculation process is as follows:

[0098]

[0099]

[0100]

[0101]

[0102] Where D is the gap between the pressure ring and the lower die base, and T2 is the thickness of the main rib.

[0103] Obtain the parting line 8 and the maximum X value X on the parting line 8 based on the absolute coordinate system. Fmax Minimum X value Fmin Maximum Y value Fmax and minimum Y value Fmin The absolute coordinate system is specifically the coordinate system referenced during mold assembly; calculate the first reference value A1 and the minimum X value X of the parting line. Fmin The difference is used to calculate the second reference value A2 and the maximum X value of the parting line X. Fmax The difference is used to calculate the third reference value A3 and the minimum Y value of the parting line. Fmin The difference between the fourth reference value A4 and the maximum Y value of the parting line Y Fmax The differences are calculated, and the four differences are compared with the minimum width of the pressure ring. If all four differences are greater than or equal to the minimum width of the pressure ring, the initial value of the pressure ring strength coefficient is used. If the differences are less than the minimum width of the pressure ring, the corresponding pressure ring strength coefficient is changed so that all four differences are greater than or equal to the minimum width of the pressure ring. In this embodiment, the minimum width of the pressure ring is preferably 150mm, 210mm, or 270mm; in other embodiments, the minimum width of the pressure ring is determined from the pressure ring manual.

[0104] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0105] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for generating and positioning the dimensions of a pressure ring guide plate, characterized in that, Includes the following steps: Obtain mold parameters and the position information of the center line of the outer ring main rib of the upper and lower mold bases. Mold parameters include parting surface, mold stroke, main rib thickness, gap between the pressure ring and the lower mold base, guide plate mounting surface thickness, chamfer distance of the guide plate mounting surface, lower flange offset height, end adjustment amount, guide plate back support thickness and pressure ring engagement amount. The dimensions of the pressure ring guide plate are obtained based on the mold stroke, main rib thickness, position information of the center line of the main ribs on the outer ring of the upper and lower mold bases, and the gap between the pressure ring and the lower mold base. The positioning information of the pressure ring guide plate is obtained based on the size information of the pressure ring guide plate, the position information of the center line of the outer ring main rib of the upper and lower mold bases, the thickness of the main rib, the gap between the pressure ring and the lower mold base, the thickness of the guide plate mounting surface, the chamfer distance of the guide plate mounting surface, the parting surface, the offset height of the lower flange, the end adjustment amount, the thickness of the guide plate back support, and the engagement amount of the pressure ring.

2. The method for generating and positioning the dimensions of a pressure ring guide plate as described in claim 1, characterized in that, The dimensions of the blank holder guide plate include the guide plate length and the guide plate width. The specific steps to obtain the dimensions of the blank holder guide plate are as follows: obtain the guide plate length based on the mold stroke; obtain the guide plate width based on the main rib thickness, the position information of the center line of the main ribs on the outer ring of the upper and lower mold bases, and the gap between the blank holder and the lower mold base.

3. The method for generating and positioning the size of the pressure ring guide plate as described in claim 2, characterized in that, The center lines of the outer ring main ribs of the upper and lower mold bases include the center lines of the first main rib, the second main rib, the third main rib, and the fourth main rib; the pressure ring guide plate includes front and rear side guide plates and left and right side guide plates; The specific steps for obtaining the guide plate width are as follows: Calculate the first intermediate dimension based on the position information of the center line of the first main rib, the position information of the center line of the third main rib, the thickness of the main rib, and the gap between the pressure ring and the lower mold base; obtain the guide plate width of the front and rear side guide plates based on the first intermediate dimension; calculate the second intermediate dimension based on the position information of the center line of the second main rib, the position information of the center line of the fourth main rib, the thickness of the main rib, and the gap between the pressure ring and the lower mold base; obtain the guide plate width of the left and right side guide plates based on the second intermediate dimension.

4. The method for generating and positioning the size of the pressure ring guide plate as described in claim 3, characterized in that, The calculation process for the first intermediate dimension is as follows: l1=X z3 -X zl -T2-2D The calculation process for the second intermediate dimension is as follows: l2=Y z4 -AND z2 -T2-2D Where l1 represents the first intermediate dimension, X z3 This indicates the location information of the centerline of the third main reinforcement bar, X. z1 This indicates the position information of the center line of the first main rib, T2 indicates the thickness of the main rib, D indicates the gap between the pressure ring and the lower die base, l2 indicates the second intermediate dimension, and Y... z4 This indicates the location information of the centerline of the fourth main reinforcement bar, Y. z2 This indicates the location information of the centerline of the second main reinforcement bar.

5. A method for generating and positioning the dimensions of a pressure ring guide plate as described in claim 1, 2, 3, or 4, characterized in that, The positioning information of the pressure ring guide plate includes the three-dimensional coordinates of the pressure ring guide plate in absolute coordinates; The specific steps for obtaining the positioning information of the blank holder guide plate are as follows: Based on the size information of the blank holder guide plate, the position information of the center line of the outer ring main rib of the upper and lower mold bases, the gap between the blank holder and the lower mold base, the thickness of the guide plate mounting surface, the chamfer distance of the guide plate mounting surface, and the thickness of the main rib, obtain the three-dimensional coordinate X value and the three-dimensional coordinate Y value of the blank holder guide plate; Based on the position information of the center line of the outer ring main rib of the upper and lower mold bases, the parting surface, the offset height of the lower flange, the thickness of the main rib, the gap between the blank holder and the lower mold base, the end adjustment amount, the thickness of the guide plate back support, the blank holder engagement amount, and the mold stroke, obtain the three-dimensional coordinate Z value of the blank holder guide plate.

6. The method for generating and positioning the dimensions of the pressure ring guide plate as described in claim 5, characterized in that, The specific steps for obtaining the three-dimensional coordinate Z value of the pressure ring guide plate are as follows: The parting surface is offset along the Z direction of the absolute coordinate to obtain the first reference surface, and the gap between the first reference surface and the parting surface is equal to the offset height of the lower flange. Based on the position information of the center lines of the outer ring main ribs of the upper and lower mold bases, the center lines of the outer ring main ribs of the upper and lower mold bases are connected to form a closed curve. The closed curve is reduced at equal intervals to obtain the outer contour line of the pressure ring. The gap between the outer contour line of the pressure ring and the closed curve is the first gap value. The outer contour line of the pressure ring is stretched along the Z direction of the absolute coordinate to form the second reference surface. Obtain the coordinate Z value of the lowest point on the intersection line of the second reference plane and the first reference plane, and then process the coordinate Z value of the lowest point on the intersection line into five to obtain the first intermediate value; The three-dimensional coordinate Z value of the pressure ring guide plate is obtained based on the first intermediate value, the end adjustment amount, the guide plate back support thickness, the pressure ring engagement amount, and the mold stroke. The calculation process for the first gap value is as follows: Where A1 represents the first gap value, T2 represents the thickness of the main rib, and B represents the gap between the pressure ring and the lower mold base.

7. The method for generating and positioning the dimensions of the pressure ring guide plate as described in claim 6, characterized in that, The calculation process for the three-dimensional coordinate Z value of the pressure ring guide plate is as follows: Z = Z l +Z2-B l -HS t Where Z represents the three-dimensional coordinate Z value of the pressure ring guide plate, z1 represents the first intermediate value, z2 represents the Z-axis adjustment amount at the end, B1 represents the thickness of the guide plate back support, H represents the engagement amount of the pressure ring, and S t Indicates the mold stroke.

8. The method for generating and positioning the dimensions of a pressure ring guide plate as described in claim 5, characterized in that, The pressure ring guide plate includes a first guide plate, a second guide plate, a third guide plate, a fourth guide plate, a fifth guide plate, a sixth guide plate, a seventh guide plate, and an eighth guide plate; The calculation process for the three-dimensional coordinate X value of the pressure ring guide plate is as follows: Where X1 represents the three-dimensional coordinate X-value of the first guide plate, X2 represents the three-dimensional coordinate X-value of the second guide plate, X3 represents the three-dimensional coordinate X-value of the third guide plate, X4 represents the three-dimensional coordinate X-value of the fourth guide plate, X5 represents the three-dimensional coordinate X-value of the fifth guide plate, X6 represents the three-dimensional coordinate X-value of the sixth guide plate, X7 represents the three-dimensional coordinate X-value of the seventh guide plate, and X8 represents the three-dimensional coordinate X-value of the eighth guide plate. z1 This indicates the location information of the centerline of the first main reinforcement bar, X. z3 The information indicates the position of the center line of the third main rib, D indicates the gap between the pressure ring and the lower mold base, B2 indicates the thickness of the guide plate mounting surface, B3 indicates the chamfer distance of the guide plate mounting surface, T2 indicates the thickness of the main rib, and WX indicates the guide plate width of the front and rear side guide plates.

9. A method for generating and positioning the dimensions of a pressure ring guide plate as described in claim 5 or 8, characterized in that, The pressure ring guide plate includes a first guide plate, a second guide plate, a third guide plate, a fourth guide plate, a fifth guide plate, a sixth guide plate, a seventh guide plate, and an eighth guide plate; The calculation process for the three-dimensional Y-coordinate value of the pressure ring guide plate is as follows: Where Y1 represents the 3D Y-value of the first guide plate, Y2 represents the 3D Y-value of the second guide plate, Y3 represents the 3D Y-value of the third guide plate, Y4 represents the 3D Y-value of the fourth guide plate, Y5 represents the 3D Y-value of the fifth guide plate, Y6 represents the 3D Y-value of the sixth guide plate, Y7 represents the 3D Y-value of the seventh guide plate, and Y8 represents the 3D Y-value of the eighth guide plate. z2 This indicates the location information of the centerline of the second main reinforcement bar, Y. z4 The information indicates the position of the center line of the fourth main rib, D indicates the gap between the pressure ring and the lower mold base, B2 indicates the thickness of the guide plate mounting surface, B3 indicates the chamfer distance of the guide plate mounting surface, T2 indicates the thickness of the main rib, and WY indicates the guide plate width of the left and right side guide plates.

10. A method for generating and positioning the dimensions of a pressure ring guide plate as described in claims 1, 2, 3, 4, 6, 7, or 8, characterized in that, The process for obtaining the position information of the center lines of the outer ring main reinforcement of the upper and lower formwork bases is as follows: Obtain the X and Y values ​​of all push rod holes based on absolute coordinate values, obtain the push rod distance, and obtain the maximum, minimum, maximum, and minimum X values, and Y values ​​of all push rod holes based on the X and Y values. Obtain the ejector pin distance and the blank holder strength coefficient. Based on the maximum and minimum values ​​of the ejector pin hole X and Y values, the ejector pin distance, and the blank holder strength coefficient, obtain the position information of the center lines of the main ribs on the outer rings of the upper and lower mold bases. The formula for obtaining the position information of the center lines of the main ribs on the outer rings of the upper and lower mold bases is as follows: X Z1 =X Kmin -a*n1-C Y Z2 =Y Kmin -a*n2-C X Z3 =X Kmax +a*n3+C Y Z4 =Y Kmax +a*n4+C Among them, X Z1 This indicates the position information of the centerline of the first main reinforcement bar, Y. Z2 This indicates the location information of the centerline of the second main reinforcement bar, X. Z3 This indicates the location information of the centerline of the third main reinforcement bar, Y. Z4 This indicates the location information of the centerline of the fourth main reinforcement bar, X. Kmax This represents the maximum value of the X value for the push rod hole. Kmin The minimum value of X for the push rod hole, Y Kmax This represents the maximum value of the Y-value of the push rod hole. Kmin The value represents the minimum value of the Y-value of the push rod hole, a represents the push rod distance, n1 represents the strength coefficient of the first pressure ring, n2 represents the strength coefficient of the second pressure ring, n3 represents the strength coefficient of the third pressure ring, n4 represents the strength coefficient of the fourth pressure ring, and C is the first constant.

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