A method and system for arranging a standard part of a press die cart mechanism

Abstract

The application relates to a stamping die trolley mechanism standard part arrangement method, which comprises the following steps: acquiring type information of a trolley mechanism, wherein the type information comprises a trolley with a side type inserted knife and a trolley with an inside type inserted knife; identifying a return block arrangement surface and a bottom surface of the trolley mechanism, and establishing a Cartesian coordinate system according to the return block arrangement surface and the bottom surface; acquiring size parameters of ribs on the bottom surface of the trolley mechanism, and determining arrangement information of a bottom guide plate based on the size parameters; acquiring operation parameters of the trolley mechanism, and determining arrangement information of a first standard part according to the operation parameters; and arranging the bottom guide plate and the first standard part on the trolley mechanism according to the Cartesian coordinate system. The application can automatically arrange trolley mechanism standard parts based on trolley mechanism types, and compared with a traditional manual arrangement mode, can greatly reduce manual calculation and drawing time of engineers, and significantly improve die design efficiency.

Description

Technical Field

[0001] This invention relates to the field of standard component arrangement technology for stamping dies, and specifically to a method and system for arranging standard components of a stamping die trolley mechanism. Background Technology

[0002] In automotive body panel stamping dies, the trolley mechanism (also known as the pulley mechanism) is a common moving component used to drive the trimming cutter block or the flanging insert to complete the stamping action. The trolley mechanism requires the installation of various standard parts, including guide plates, insert cutters, cylinders, ejector blocks, return blocks, and lifting components. The selection of these standard parts and their installation positions directly affect the motion accuracy, operational stability, and service life of the trolley mechanism.

[0003] Currently, the placement of standard components in trolley mechanisms is primarily done manually. Engineers manually select suitable standard component models from a standard component library based on the structural dimensions and stroke parameters of the trolley mechanism, and then calculate their installation positions in the 3D model one by one. Specifically, engineers need to manually determine the number and dimensions of the ribs, and accordingly calculate the length, width, quantity, and spacing of the guide plates; they need to manually determine the position and guiding angle of the inserts; and they also need to manually adjust for interference between the top guide plate and the inserts. The entire process involves a large amount of repetitive calculations and manual judgment, resulting in long design cycles, low efficiency, and susceptibility to human error leading to selection errors or positional deviations, which in turn affect the assembly accuracy and service life of the mold. Furthermore, trolley mechanisms can be divided into insert-side trolleys and insert-inside trolleys based on the installation position of the inserts. The structural characteristics and standard component placement requirements of the two types differ. Traditional manual placement methods handle the two types of trolleys separately, lacking a unified automated placement strategy, further reducing design efficiency. Therefore, how to achieve automatic selection and placement of standard components for trolley mechanisms to improve design efficiency and accuracy is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] This application provides a method and system for arranging standard parts of a stamping die trolley mechanism. Based on the type of trolley mechanism, it can realize the automatic selection and automatic arrangement of standard parts, improve design efficiency, and reduce human error.

[0005] In a first aspect, embodiments of this application provide a method for arranging standard parts of a stamping die trolley mechanism, comprising the following steps: Obtain the type information of the trolley mechanism, which includes the knife-side type trolley and the knife-inside type trolley; identify the return block arrangement surface and bottom surface of the trolley mechanism, and establish a Cartesian coordinate system based on the return block arrangement surface and bottom surface; Obtain the dimensional parameters of the ribs on the bottom surface of the trolley mechanism, and determine the arrangement information of the bottom guide plate based on the dimensional parameters; obtain the operating parameters of the trolley mechanism, and determine the arrangement information of the first standard component based on the operating parameters; According to the Cartesian coordinate system, the bottom guide plate and the first standard component are arranged on the trolley mechanism; When the trolley mechanism is a knife-side type, the arrangement information of the top guide plate is determined according to the size parameters of the rib, and the knife is arranged on the side of the trolley mechanism; when the trolley mechanism is a knife-inside type, the position of the knife is determined based on the parting line, and the arrangement information of the top guide plate is determined according to the length of the trolley mechanism, and the top guide plate is adjusted for interference.

[0006] In conjunction with the first aspect, in one implementation, establishing a Cartesian coordinate system based on the return block arrangement surface and the bottom surface specifically includes: The normal vector of the return block arrangement surface is taken as the Z-axis direction; The normal vector of the bottom surface is taken as the Y-axis direction; A Cartesian coordinate system is established by taking the point with the smallest X value on the intersection line of the return block arrangement surface and the bottom surface as the origin of the coordinate system.

[0007] In conjunction with the first aspect, in one embodiment, the dimensional parameters of the ribs include the number of ribs, the length parameter of each rib, and the width parameter.

[0008] In conjunction with the first aspect, in one implementation, determining the arrangement information of the bottom guide plate based on the dimensional parameters specifically includes a bottom guide plate selection step: Iterate through the guide plate models in the standard parts library and obtain the length and width of each guide plate model; The width of the guide plate is selected based on the width parameter of the rib, so that the width of the guide plate selected on the same rib is the same and less than or equal to the width parameter of the rib. Determine the preset arrangement length of the bottom guide plate on the rib, wherein the preset arrangement length is equal to the length of the rib; Set the current uncovered length, and set the initial value of the current uncovered length to the preset arrangement length, and then perform the following loop operation: Select the bottom guide plate with the longest length from the standard parts library that does not exceed the currently uncovered length; Subtract the length of the selected bottom guide from the current uncovered length to update the current uncovered length; Repeat the above loop operation until the current uncovered length is less than a preset threshold, thereby determining the length and number of bottom guide plates.

[0009] In conjunction with the first aspect, in one embodiment, determining the arrangement information of the bottom guide plate based on the size parameters further includes a bottom guide plate positioning step: The total clearance is determined based on the sum of the preset arrangement length and the lengths of all selected bottom guide plates; If the number of bottom guide plates is greater than one, then each gap is calculated, and each gap is equal to the total gap divided by the number of bottom guide plates minus one, and each gap is rounded to a preset integer multiple. If each gap exceeds a preset threshold, one of the bottom guide plates will be replaced with a guide plate of an adjacent length from the standard parts library, and the total gap of the arrangement will be recalculated and the gap will be allocated. If the number of bottom guide plates is equal to one, then the total gap between the two ends is used as the reserved length at both ends, and the bottom guide plate is placed in the middle of the total length of the arrangement so that the reserved length at both ends is equal.

[0010] In conjunction with the first aspect, in one embodiment, when matching the bottom guide plate, the method further includes: The total length of the arrangement is divided into three regions of preset length along the length direction, and a V-guide plate with a length not exceeding the length of the region is selected in the middle region for arrangement. In the front and rear areas, the length of the area is used as the preset arrangement length, and the arrangement is carried out according to the bottom guide plate selection steps and the bottom guide plate positioning steps.

[0011] In conjunction with the first aspect, in one embodiment, the operating parameters include the trolley retraction stroke, the pressing core stroke, and the overall mass of the trolley mechanism, and the first standard component includes a drive component, an ejector component, a return component, and a lifting component.

[0012] In conjunction with the first aspect, in one implementation, determining the arrangement information of the first standard component based on the operating parameters specifically includes: Based on the trolley retraction stroke, the pressure core stroke, and the overall mass of the trolley mechanism, select the models of the drive components, ejector components, return components, and lifting components from the standard parts library; Specifically, the stroke of the drive component is selected to be greater than or equal to the trolley retraction stroke, the stroke of the ejector component is selected to be greater than or equal to the pressure core stroke, and the rated load of the lifting component is selected to be greater than or equal to a preset multiple of the overall mass of the trolley mechanism.

[0013] In conjunction with the first aspect, in one embodiment, the first standard component is arranged on the trolley mechanism according to the Cartesian coordinate system, specifically including: The bottom guide plate is arranged based on the guide plate positioning steps described above; The drive component is positioned at a first preset position on the side of the trolley mechanism; The ejector is positioned at a second predetermined position at the end of each of the ribs; The return component is positioned at a third preset position on the return block arrangement surface; The lifting component is positioned at the fourth preset position at the preset lifting allowance length at both ends of the rib.

[0014] In conjunction with the first aspect, in one embodiment, when the trolley mechanism is a blade-opposite type, the arrangement information of the top guide plate is determined based on the dimensional parameters of the rib, specifically including: The length, width, and quantity of the top guide plate are selected based on the bottom guide plate selection steps. The arrangement position of the top guide plate is determined based on the bottom guide plate positioning step; wherein, the preset arrangement length of the top guide plate is the length of the rib minus the sum of the preset lifting allowance lengths at both ends.

[0015] In conjunction with the first aspect, in one embodiment, when the trolley mechanism is a blade-opposite type, the blade is arranged on the side of the trolley mechanism, specifically including: The coordinates of the arrangement of the insert on the side are calculated based on the Cartesian coordinate system. The inserter is installed on the side of the trolley mechanism according to the arrangement coordinates.

[0016] In conjunction with the first aspect, in one embodiment, when the trolley mechanism is of the inserter inner type, determining the inserter position based on the parting line specifically includes: Obtain the parting line, and then divide the parting line into a set of points at equal intervals according to the arc length, with the discrete spacing being a preset value; The side of the trolley mechanism is offset outward by a predetermined distance to form a cutting surface, and the points that are concentrated on the inside of the cutting surface are retained. The retained point set is reordered to generate effective cross-sectional parting lines; Determine the horizontal position of the top surface insert based on the effective cross-section parting line; A thin sheet of a preset width is created at the horizontal position of the top insert blade. The thin sheet is intersected with the trolley mechanism. The height of the insert blade is corrected based on the cross section obtained from the intersection, so that the insert blade and the top surface maintain a preset gap distance.

[0017] In conjunction with the first aspect, in one embodiment, determining the arrangement information of the top guide plate based on the length of the trolley mechanism specifically includes: The width parameters of the top guide plate are determined based on the bottom guide plate selection steps described above; The number of top guide plates is determined based on the length of the trolley mechanism, the preset length of the top guide plate, the preset guide plate edge allowance distance, and the preset guide plate spacing. Based on the preset guide plate spacing and quantity, the top guide plates are evenly arranged on the top surface of the trolley mechanism along the direction of the bottom rib.

[0018] In conjunction with the first aspect, in one implementation, the interference adjustment specifically includes: Calculate whether the positions of the top guide plate and the inserter overlap in three-dimensional space. If they overlap, it is determined that interference has occurred. If interference occurs, calculate the overlap length between the inserter and the guide plate in the direction of the trolley's movement, and use the sum of the overlap length and the preset safety margin as the minimum moving distance; Calculate the new positions after moving forward and backward by the minimum moving distance respectively, and select the direction that does not produce new interference and has a smaller moving distance to perform the movement; If new interference occurs in both directions, the direction with the smaller movement distance is selected first, and the detection and movement are repeated until the interference is eliminated.

[0019] Secondly, embodiments of this application provide a system based on an arrangement method for standard parts of a stamping die trolley mechanism, comprising: A type acquisition module is used to acquire type information of the trolley mechanism, the type of which includes a knife-side trolley and a knife-inside trolley; The coordinate system establishment module is used to identify the return block arrangement surface and the bottom surface of the trolley mechanism, and establish a Cartesian coordinate system based on the return block arrangement surface and the bottom surface. The parameter acquisition module is used to acquire the size parameters of the ribs on the bottom surface of the trolley mechanism and the operating parameters of the trolley mechanism. The processing module is used to determine the arrangement information of the bottom guide plate based on the size parameters, determine the arrangement information of the first standard part based on the operating parameters, and when the trolley mechanism is a cutter-opposite type, determine the arrangement information of the top guide plate based on the size parameters of the rib and arrange the cutter on the side of the trolley mechanism; when the trolley mechanism is a cutter-inside type, determine the cutter position based on the parting line, determine the arrangement information of the top guide plate based on the length of the trolley mechanism, and perform interference adjustment on the top guide plate; An arrangement module is used to arrange the bottom guide plate and the first standard component on the trolley mechanism according to the Cartesian coordinate system.

[0020] The beneficial effects of the technical solutions provided in this application include: 1. This application can automatically establish a Cartesian coordinate system based on the type of trolley mechanism, and complete the selection and position calculation of bottom guide plate, top guide plate, V guide plate, insert knife, cylinder, top block, return block and lifting parts based on the obtained rib size parameters and operating parameters, and perform interference adjustment. It realizes the automatic arrangement of standard parts of trolley mechanism. Compared with the traditional manual arrangement method, it greatly reduces the manual calculation and drawing time of engineers and significantly improves the efficiency of mold design.

[0021] 2. This application can automatically calculate the length, quantity, gap and arrangement of the bottom guide plate and the top guide plate, avoiding selection errors or positional deviations that may be caused by manual calculation and judgment, ensuring the accuracy of standard parts installation, thereby ensuring the precision of the trolley mechanism's movement direction and the reliability of its stroke, and extending the service life of the mold.

[0022] 3. This application divides the trolley mechanism into two types: the opposite-side type and the inner-side type, and adopts different layout strategies for each: the top guide plate of the opposite-side type trolley is arranged based on the size parameters of the rib, while the top guide plate of the inner-side type trolley is arranged based on the length of the trolley mechanism and interference adjustment is added. The two types of trolleys share the layout logic of the bottom guide plate and the first standard component, which not only ensures the layout requirements of the two types of trolleys, but also realizes the reuse of the algorithm, and has good versatility and adaptability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram illustrating the main steps of the present invention; Figure 2 This is a schematic diagram of a partial Cartesian coordinate system according to the present invention; Figure 3 This is a diagram showing the ribs on the opposite side of the insert blade of the present invention. Figure 4 This is a schematic diagram showing the arrangement of the top guide plate and the first standard component of the knife-side type trolley in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram showing the arrangement of the bottom guide plate and the first standard component of the trolley on the opposite side of the inserter in Embodiment 1 of the invention; Figure 6 This is a schematic diagram of the initial parting line of the insert-inner type trolley in Embodiment 1 of the present invention; Figure 7 This is a diagram illustrating the arrangement of the inner pusher top guide plate and part of the first standard component in Embodiment 1 of the present invention. Figure 8This is a diagram illustrating the arrangement of the bottom guide plate and some first standard components of the trolley inside the insert blade in Embodiment 1 of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0026] Example 1: Please see Figures 1-8 Embodiment 1 of this application provides a method for arranging standard parts of a stamping die trolley mechanism, which mainly includes: S1. Obtain the type information of the trolley mechanism, including the trolley with the blade on the opposite side and the trolley with the blade on the inner side; identify the return block arrangement surface and bottom surface of the trolley mechanism, and establish a Cartesian coordinate system based on the return block arrangement surface and bottom surface; S101: Obtain information on the type of trolley mechanism; The type information of the trolley mechanism includes trolleys with inserts on the opposite side and trolleys with inserts on the inside. The type is determined by identifying the installation position of the inserts in the 3D model of the trolley mechanism: if the inserts are installed on the side of the trolley mechanism, it is determined to be a trolley with inserts on the opposite side; if the inserts are installed on the inside of the top surface of the trolley mechanism, it is determined to be a trolley with inserts on the inside. In a specific implementation of this embodiment, the system traverses all standard parts in the model through the secondary development interface of the CAD software, identifies the standard part of type insert, obtains the mounting surface of the insert, calculates the normal vector and position coordinates of the mounting surface, and if the normal vector of the mounting surface points to the side of the trolley mechanism, it is determined to be a side-type trolley; if the mounting surface is located in the inner area of ​​the top surface of the trolley mechanism, it is determined to be an inner-inner-side type trolley.

[0027] S102: Establishment of Cartesian coordinate system; like Figure 2 As shown, the return block arrangement surface a and the bottom surface b of the trolley are identified, and the normal vectors Va(xa, ya, za) and Vb(xb, yb, zb) of these two surfaces are obtained. A Cartesian coordinate system Csys(Oxyz, Xc, Yc, Zc) is established on the trolley, where: Take the normal vector of the return block arrangement surface a as the Z-axis direction, i.e., Zc = Va; Take the normal vector of the bottom surface b as the direction of the Y-axis, that is, Yc = Vb; The point with the smallest X value on the intersection line L of the return block arrangement surface a and the bottom surface b is taken as the origin O of the coordinate system; thus, a Cartesian coordinate system is established, and the arrangement position of all subsequent standard parts is determined based on this coordinate system, thereby ensuring the accuracy and consistency of the position calculation.

[0028] S2. Obtain the dimensional parameters of the ribs on the bottom surface of the trolley mechanism, and determine the layout information of the first standard component based on the dimensional parameters; obtain the operating parameters of the trolley mechanism, and determine the layout information of the second standard component based on the operating parameters; S201: Identify the dimensional parameters of the reinforcing bar; In this embodiment, please refer to Figure 3 The dimensional parameters of the reinforcing bars include the number of reinforcing bars, the length of each reinforcing bar, and the width of each reinforcing bar. like Figure 2 As shown, the bottom surface of the trolley mechanism has multiple ribs, each rib extending along the direction of trolley movement. The number of ribs N determines the number of columns of bottom guide plates. Each rib corresponds to one column of bottom guide plates, thus ensuring that each rib can obtain stable guiding support. Methods for identifying the dimensional parameters of the reinforcing bars include: Manual input method: Users can manually select or input relevant parameter values ​​through CAD software or parameter input interface; Automatic recognition method: The system automatically traverses the geometric features in the model through the secondary development interface of CAD software, and identifies and extracts relevant parameters according to preset rules (such as the angle between the normal vectors, the aspect ratio, etc.). For example, it selects the convex surfaces that have a normal vector angle of less than 10° with the bottom normal vector, an aspect ratio of more than 3:1, and that extend along the direction of the trolley movement as ribs, obtains the length of their center line as the length parameter, and obtains the width of their cross-section as the width parameter. Those skilled in the art can choose the appropriate acquisition method according to the actual application scenario, as long as the required parameters can be obtained.

[0029] S202: Determine the layout information of the bottom guide plate; In this embodiment, determining the arrangement information of the bottom guide plate includes: ① Bottom guide plate selection steps: Traverse the guide plate models in the standard parts library, obtain the length and width of each guide plate model, select the width of the bottom guide plate based on the width parameter of the rib, so that the bottom guide plate selected on the same rib has the same width, and the width is less than or equal to the width parameter of the rib. Determine the preset arrangement length of the bottom guide plate on the rib. For the bottom guide plate, the preset arrangement length is equal to the length of the rib. Set the current uncovered length and set its initial value to the preset layout length. Perform the following loop operation: Select the bottom guide plate with the longest length that does not exceed the current uncovered length from the standard parts library; subtract the length of the selected bottom guide plate from the current uncovered length to update the current uncovered length; repeat the above operation until the current uncovered length is less than the preset threshold.

[0030] This greedy algorithm allows for the use of the fewest guide plates while ensuring the coverage length of the guide plates, thus reducing costs and installation workload.

[0031] For example: If the rib length is 280mm, and the standard parts library contains guide plates of three lengths: 100mm, 75mm, and 50mm, the iterative operation process is as follows: Initially, the uncovered length is 280mm. Select a 100mm guide plate and update it to 180mm; then select another 100mm guide plate and update it to 80mm; then select a 75mm guide plate and update it to 5mm; if 5mm is less than a preset threshold (e.g., 10mm), stop. Finally, two 100mm guide plates and one 75mm guide plate are selected.

[0032] The preset threshold can be set according to actual needs, for example, to half the minimum guide plate length, or to 10mm. Those skilled in the art can adjust it according to the minimum specification of the guide plate in the standard parts library.

[0033] ② Bottom guide plate positioning steps: The total clearance is determined based on the preset arrangement length and the sum of the lengths of all selected bottom guide plates; different processing is applied according to the number of bottom guide plates, as follows: If the number of bottom guide plates is greater than 1: Calculate each gap by dividing the total gap by the number of bottom guide plates minus one, and round each gap to a preset integer multiple. In this embodiment, rounding is done to a multiple of 5 (e.g., 27.5mm is rounded to 25mm or 30mm, using the rounding method). If any gap exceeds a preset threshold (50mm in this embodiment), one of the bottom guide plates will be replaced with a guide plate of adjacent length from the standard parts library. Preferably, the guide plate with the longest length in the current selection scheme will be selected for replacement. After replacement, the total gaps will be recalculated and the gaps will be allocated.

[0034] Specific example: Suppose the preset layout length LZ = 280mm, and three 75mm guide plates are selected, with a total guide plate length of 225mm. Then the total gap Dis = 55mm, the number of guide plates N = 3, and the gap for each plate = 55 / (3-1) = 27.5mm. Rounding to a multiple of 5 gives 25mm (rounded off). If the rounded value is 30mm and 30mm < 50mm, no replacement is needed. If the rounded value exceeds 50mm, replace one of the 75mm guide plates with a 100mm guide plate and recalculate. If the number of bottom guide plates is 1, then the total gap between the two ends is used as the reserved length at both ends, and the bottom guide plate is placed in the middle of the total length to make the reserved length at both ends equal. Specific example: Assume the preset arrangement length LZ=280mm, and select a 250mm guide plate. Then the total gap Dis=30mm, with 15mm reserved at each end. The guide plate is arranged in the center, that is, the starting position of the guide plate is 15mm and the ending position is 265mm.

[0035] This gap distribution method ensures that the guide plates are evenly distributed on the ribs, avoiding tilting or jamming of the trolley caused by uneven force, thereby extending the service life of the trolley mechanism and the mold. In addition, this embodiment also includes: ③ Special treatment of V-guide plate: When matching the bottom guide plate, the arrangement of the V-guide plate is also included. In this embodiment, the V-guide plate arrangement specifically includes: The total length of the layout is divided into three regions of preset length along the length direction: the front region, the middle region, and the rear region. The length of each region is LZ / 3. In the middle area, V-guide plates with a length not exceeding the length of the area are selected for arrangement. Preferably, the V-guide plate model with a length closest to and not exceeding the length of the area is selected from the standard parts library. The width of the V-guide plate is selected in the same way as that of the ordinary bottom guide plate, that is, the width of the V-guide plate selected on the same rib is consistent and is less than or equal to the width parameter of the rib.

[0036] In the front and rear areas, the length of the area is used as the preset arrangement length, and ordinary bottom guides are arranged according to the bottom guide selection steps and bottom guide positioning steps described above. For example: Assuming the total layout length LZ = 900mm, it is divided into three regions, each with a length of 300mm. The middle region (300mm~600mm) uses V-guide plates with a length not exceeding 300mm, such as a 280mm long and 80mm wide V-guide plate (assuming a rib width of 100mm) selected from the standard parts library. The front region (0~300mm) and the rear region (600~900mm) each use 300mm as the preset layout length and select ordinary bottom guide plates using a greedy algorithm, for example, three 100mm ordinary bottom guide plates for each region, positioned according to the gap allocation method.

[0037] S203: Obtain the operating parameters of the trolley mechanism and determine the layout information; The operating parameters of the trolley mechanism in this embodiment include: trolley retraction stroke, pressing core stroke, and overall mass of the trolley mechanism; The first standard component includes the drive component (cylinder), the ejector component (top block), the return component (return block), and the lifting component (lifting standard component). Based on these operating parameters, select the model number of each standard part from the standard parts library. Specifically: When selecting a drive component, ensure that its stroke is greater than or equal to the trolley's retraction stroke. When selecting the ejector, ensure its stroke is greater than or equal to the pressure core stroke. When selecting lifting components, their rated load capacity should be greater than or equal to a preset multiple of the overall mass of the trolley mechanism (preferably 2 times in this embodiment). This automatic selection method based on operating parameters ensures that the selected standard parts meet the motion requirements of the trolley mechanism, avoids equipment failures caused by improper selection, and thus determines the layout information of the first standard part.

[0038] S3. Arrange the bottom guide plate and the first standard component on the trolley mechanism according to the Cartesian coordinate system; According to the Cartesian coordinate system, the bottom guide plate and the first standard component are arranged on the trolley mechanism, specifically: Bottom guide plate arrangement: Arrange the bottom guide plate according to the bottom guide plate positioning steps above. Place the bottom guide plate on the bottom rib, with the length direction of the guide plate consistent with the length direction of the rib, and the center line of the guide plate aligned with the center line of the rib. Driving component (cylinder) arrangement: The driving component is arranged at a first preset position on the side of the trolley mechanism; in this embodiment, the first preset position is the central area of ​​the side of the trolley mechanism, and its height coordinate is taken as one-third of the height of the trolley mechanism. For example, if the height of the trolley mechanism is 300mm, then the cylinder installation height is 100mm. This position can be adjusted appropriately according to the cylinder stroke and the trolley structure, as long as the cylinder extension rod is consistent with the direction of movement of the trolley. Ejector (top block) arrangement: The top block is arranged at the second preset position at the end of each rib; in this embodiment, the second preset position is the center point of the end face of each rib. Specifically, the coordinates of the end point of the rib are obtained, and the end point is offset inward by a preset distance (preferably 10mm in this embodiment) along the length of the rib as the center installation point of the top block. Each rib corresponds to one top block, and the number of top blocks is equal to the number of ribs. The position of the top block can be finely adjusted according to the length of the rib and the ejection stroke to ensure that the top block can completely cover the end face of the rib. Return component (return block) arrangement: The return component is arranged at the third preset position on the return block arrangement surface. In this embodiment, the return block arrangement surface is the bottom surface of the trolley mechanism. The surface is evenly divided according to the number of return blocks. Each return block is arranged at the center point of each divided area. For example, if 4 return blocks need to be arranged, the return block arrangement surface is divided into 4 equal parts along the length direction. Each return block is located at the center of each equal part. The position of the return block can be adjusted according to the return force requirements and the trolley structure.

[0039] Lifting component arrangement: The lifting components are positioned at the fourth preset position at the pre-defined lifting allowance length at both ends of the rib. In this embodiment, the fourth preset position is 50mm from the end of the rib, located on the extension line of the rib or on both sides of the rib. For example, if the length of the rib is 500mm, the lifting components are installed at 50mm from one end and 50mm from the other end. This reserved space ensures that the lifting components do not interfere with the top guide plate, and the position of the lifting components can be adjusted according to the actual position of the lifting holes.

[0040] S4. When the trolley mechanism is a side-mounted insert type, determine the arrangement information of the top guide plate according to the size parameters of the rib, and arrange the insert on the side of the trolley mechanism; when the trolley mechanism is a side-mounted insert type, determine the insert position based on the parting line, determine the arrangement information of the top guide plate according to the length of the trolley mechanism, and make interference adjustments to the top guide plate.

[0041] S401: Handling of side-mounted trolleys with insert blades: (a) Selection of top guide plate: The selection of the top guide plate is similar to that of the bottom guide plate, based on the selection steps for the bottom guide plate, but the preset layout length is different. Specifically: Select the width of the top guide plate from the standard parts library so that the selected top guide plates on the same rib have the same width, and the width is less than or equal to the width parameter of the rib. The preset arrangement length of the top guide plate on the rib is determined. In this embodiment, since the top guide plate needs to avoid the lifting hole, the preset arrangement length of the top guide plate is equal to the length of the rib minus the sum of the preset lifting allowance lengths at both ends. For example, if the length of the rib is 500mm and a lifting space of 50mm is reserved at each end, then the preset arrangement length of the top guide plate is 400mm. A greedy algorithm is used to select the length and number of top guide plates: the current uncovered length is set, its initial value is set to the preset layout length, the top guide plate with the largest length that does not exceed the current uncovered length is selected from the standard parts library, the current uncovered length is updated, and this process is repeated until the current uncovered length is less than the preset threshold.

[0042] (ii) Positioning of the top guide plate: The positioning of the top guide plate is similar to that of the bottom guide plate, based on the positioning steps of the bottom guide plate, but the space reserved for lifting needs to be considered.

[0043] Specifically: The total clearance is determined based on the preset layout length and the sum of the lengths of all selected top guide plates; If the number of top guide plates is greater than one, then each gap is calculated as the total gap divided by the number of top guide plates minus one, and each gap is rounded to a preset integer multiple (such as a multiple of 5). If the number of top guide plates is equal to one, the total gap between the plates is used as the reserved length at both ends, and the top guide plates are placed in the middle of the preset arrangement length so that the reserved lengths at both ends are equal. During arrangement, the length direction of the top guide plate is consistent with the length direction of the rib, and the center line of the top guide plate is aligned with the center line of the rib.

[0044] Since the insert is located on the side, it will not interfere with the top guide plate, so no additional interference adjustment steps are required; (III) Top blade arrangement: The placement of the inserter on the side is determined according to actual needs. This embodiment provides the following methods: User-specified location: Users can directly click on the side of the trolley mechanism to select the installation point of the insert through the interactive interface of the CAD software. The system reads the coordinates of the point selected by the user as the placement position of the insert.

[0045] Preset default position: The system uses a preset default position for arrangement. In this embodiment, for example, the center of the insert is aligned with the center of the side of the trolley mechanism, and the distance between the lower edge of the insert and the bottom surface of the trolley mechanism is a preset value (e.g., 50mm). Users can adjust this preset value according to actual needs.

[0046] Automatic calculation based on coordinate system: Based on the Cartesian coordinate system, the arrangement coordinates of the inserter on the side are automatically calculated; in this embodiment, the range of the side of the trolley mechanism in the Cartesian coordinate system is set to ( (length direction), ( (width direction), ( (Height direction); then the coordinates for the placement of the insert are: the X direction is taken as the midpoint of the side length direction, i.e. ( ) / 2; the Y direction is taken as the coordinate of the outer surface of the side; the Z direction is taken as one-third or the midpoint of the height direction of the side, depending on the matching position of the insert and the upper mold.

[0047] Based on the determined layout coordinates, install the inserter on the side of the trolley mechanism, ensuring that the inclined surface of the inserter contacts the mating surface of the trolley mechanism, thus ensuring that the inserter can drive the trolley mechanism to slide in the direction of movement; for example... Figure 4 and Figure 5 As shown, these are schematic diagrams of the top and bottom surfaces of the trolley after it has been arranged.

[0048] S402: Handling of the knife-insertion inner side type trolley: For the knife-insertion-inside type trolley, this embodiment specifically includes: ① Determine the position of the inserter based on the parting line: First, obtain the parting line, such as... Figure 6 As shown.

[0049] The parting line is divided into a set of points at equal intervals according to the arc length, with the discrete spacing being a preset value; in this embodiment, the discrete spacing is preferably 2mm. The side of the trolley mechanism is offset outward by a preset distance to form a cut surface; in this embodiment, the offset distance is preferably 10mm. Points that fall within the cut surface are retained, and the retained point set is reordered to generate an effective cross-sectional parting line; The horizontal position of the top insert is determined based on the effective cross-section parting line. A thin sheet of a preset width is created at the horizontal position of the top insert. The intersection of this thin sheet with the trolley mechanism is calculated. The height of the insert is corrected based on the cross-section obtained from the intersection, so that the insert and the top surface maintain a preset gap distance. In this embodiment, the width of the thin sheet is preferably 0.5 mm, and the gap distance between the insert and the top surface is preferably 2 mm. By creating thin-film solids for intersection, the height position of the insert can be determined efficiently and accurately, solving the problem that it is difficult to directly select points on the top surface of a curved surface.

[0050] ② Determine the layout information of the top guide plate based on the length of the trolley: Based on the bottom guide plate selection steps, determine the width parameter of the top guide plate, that is, the width of the top guide plate is not greater than the width of the rib, to ensure that the top guide plate is aligned vertically with the bottom guide plate; The number of top guide plates is determined based on the length of the trolley mechanism, the preset length of the top guide plate, the preset edge allowance of the guide plate, and the preset spacing between the guide plates.

[0051] Specifically, let the length of the trolley mechanism be L, and the preset length of the top guide plate be... The preset guide plate edge clearance is X (in this embodiment, X is preferably 100mm, i.e., 50mm at each end), and the preset guide plate spacing is D (in this embodiment, D is preferably 250mm). Then the number of top guide plates K satisfies: L = + X + (K-1) × D; It should be noted that the preset top guide plate length You can select based on the actual model from the standard parts library. When the value of K is small, the value of K is large; when When the length is large, the value of K is small; if the length L of the trolley mechanism is small, such that K < 1, then K = 1, and the top guide plate of the block is centered.

[0052] After determining the number K of top guide plates based on the above relationship, the length of K blocks is... The top guide plates are evenly arranged at a spacing D on the top surface of the trolley mechanism.

[0053] ③ Intervention adjustment: After the initial arrangement of the top guide plates, this embodiment also includes an interference adjustment step, specifically: Check for interference between the top guide plate and the top-side insert; In this embodiment, detecting whether interference occurs specifically includes obtaining the area occupied by the top guide plate in three-dimensional space (i.e., the guide plate bounding box) and the area occupied by the insert blade in three-dimensional space (i.e., the insert blade bounding box) based on the Cartesian coordinate system. The projection intervals of these two areas in the X, Y, and Z directions are calculated to see if they intersect: if they intersect, interference is determined to have occurred; if they do not intersect, interference is determined to have not occurred, and no adjustment is required.

[0054] If interference is determined to occur, the overlap length between the inserter and the guide plate in the direction of the trolley movement is calculated. This overlap length is the conflict distance that needs to be eliminated. In addition, in order to ensure complete elimination of interference, this embodiment also includes adding a preset safety margin, which is preferably 1mm. That is, the minimum movement distance is the sum of the overlap length and the preset safety margin. Calculate the new positions after moving forward (positive X-axis direction) and backward (negative X-axis direction) respectively, and determine whether the new positions will cause new interference with other components (such as other guide plates, lifting holes, bolts, etc.); Choose based on the judgment result: If there is only one direction that does not generate new interference, then choose that direction to move. If no new interference is generated in either direction, then any one direction can be chosen to move (in this embodiment, moving forward is preferred). If new interference occurs in both directions, choose the direction with less new interference, which is usually the direction that moves a smaller distance from the original position. After the movement is completed, re-check whether there is still interference between the guide plate and the inserter. If there is still interference, repeat the above detection, calculation and movement steps until the interference is completely eliminated. like Figure 7 and Figure 8The figures show the arrangement of the inner side of the insert trolley. Furthermore, to prevent infinite loops, the maximum number of iterations in this embodiment is preferably 10. If the interference is not eliminated after reaching the maximum number of iterations, a warning message is output, prompting the user to manually adjust. Through the above interference adjustment steps, this method can resolve the positional conflict between the top guide plate and the insert without manual intervention. Compared to repeated trial and error adjustments by manual methods, this method can quickly calculate the optimal moving direction and minimum moving distance, significantly improving design efficiency while avoiding secondary interference problems caused by improper adjustments.

[0055] Example 2: This application also provides a second embodiment, an automatic arrangement system for standard parts of a stamping die trolley mechanism. This system is used to implement the method described in the first embodiment. Specifically, the system described in this embodiment includes the following modules: Type acquisition module: It is used to acquire the type information of the trolley mechanism. The type includes the knife-side type trolley and the knife-inside type trolley. For the specific implementation method, please refer to step S101 of Embodiment 1.

[0056] Coordinate system establishment module: It is used to identify the return block arrangement surface and bottom surface of the trolley mechanism, and establish a Cartesian coordinate system based on the return block arrangement surface and the bottom surface. For specific implementation, please refer to step S102 of Embodiment 1.

[0057] Parameter acquisition module: It is used to acquire the size parameters of the ribs on the bottom surface of the trolley mechanism and the operating parameters of the trolley mechanism. For specific implementation, please refer to steps S201 and S203 of Embodiment 1.

[0058] Processing module: It determines the arrangement information of the bottom guide plate based on the size parameters; The layout information of the first standard component is determined based on the operating parameters; When the trolley mechanism is a blade-opposite type, the arrangement information of the top guide plate is determined according to the size parameters of the rib, and the blade is arranged on the side of the trolley mechanism; When the trolley mechanism is of the inserter inner type, the inserter position is determined based on the parting line, and the arrangement information of the top guide plate is determined according to the length of the trolley mechanism, and the top guide plate is adjusted by interference; the specific implementation methods are respectively referred to S202 (bottom guide plate), S203 (first standard part), S401 (opposite side type processing), and S402 (inner side type processing) of Embodiment 1.

[0059] The arrangement module is used to arrange the bottom guide plate and the first standard part on the trolley mechanism according to the Cartesian coordinate system. For the specific implementation method, please refer to step S3 of Embodiment 1.

[0060] It should be noted that each module in this embodiment two can be implemented in software, hardware or a combination of software and hardware. For example, each module can be integrated into a processor or deployed independently. Those skilled in the art can implement the functions of the above modules without creative effort based on the method steps disclosed in embodiment one, and will not be elaborated here.

[0061] The system provided in this second embodiment corresponds to the method provided in the first embodiment and can achieve the same technical effect: automatically complete the selection and arrangement of standard parts of the trolley mechanism, significantly improve design efficiency and accuracy, and has good versatility.

[0062] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0063] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0064] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for arranging standard parts of a stamping die trolley mechanism, characterized in that, Includes the following steps: Obtain the type information of the trolley mechanism, which includes the knife-side type trolley and the knife-inside type trolley; identify the return block arrangement surface and bottom surface of the trolley mechanism, and establish a Cartesian coordinate system based on the return block arrangement surface and bottom surface; Obtain the dimensional parameters of the ribs on the bottom surface of the trolley mechanism, and determine the arrangement information of the bottom guide plate based on the dimensional parameters; Obtain the operating parameters of the trolley mechanism, and determine the layout information of the first standard component based on the operating parameters; According to the Cartesian coordinate system, the bottom guide plate and the first standard component are arranged on the trolley mechanism; When the trolley mechanism is a knife-side type, the arrangement information of the top guide plate is determined according to the size parameters of the rib, and the knife is arranged on the side of the trolley mechanism; when the trolley mechanism is a knife-inside type, the position of the knife is determined based on the parting line, and the arrangement information of the top guide plate is determined according to the length of the trolley mechanism, and the top guide plate is adjusted for interference.

2. The method for arranging standard parts of the stamping die trolley mechanism according to claim 1, characterized in that, Establishing a Cartesian coordinate system based on the return block arrangement surface and the bottom surface specifically includes: The normal vector of the return block arrangement surface is taken as the Z-axis direction; The normal vector of the bottom surface is taken as the Y-axis direction; A Cartesian coordinate system is established by taking the point with the smallest X value on the intersection line of the return block arrangement surface and the bottom surface as the origin of the coordinate system.

3. The method for arranging standard parts of the stamping die trolley mechanism according to claim 1, characterized in that, The dimensional parameters of the ribs include the number of ribs, the length of each rib, and the width of each rib.

4. The method for arranging standard parts of the stamping die trolley mechanism according to claim 3, characterized in that, The arrangement information of the bottom guide plate is determined based on the aforementioned size parameters, specifically including the bottom guide plate selection steps: Iterate through the guide plate models in the standard parts library and obtain the length and width of each guide plate model; The width of the guide plate is selected based on the width parameter of the rib, so that the width of the guide plate selected on the same rib is the same and less than or equal to the width parameter of the rib. Determine the preset arrangement length of the bottom guide plate on the rib, wherein the preset arrangement length is equal to the length of the rib; Set the current uncovered length, and set the initial value of the current uncovered length to the preset arrangement length, and then perform the following loop operation: Select the bottom guide plate with the longest length from the standard parts library that does not exceed the currently uncovered length; Subtract the length of the selected bottom guide from the current uncovered length to update the current uncovered length; Repeat the above loop operation until the current uncovered length is less than a preset threshold, thereby determining the length and number of bottom guide plates.

5. The method for arranging standard parts of the stamping die trolley mechanism according to claim 4, characterized in that, The arrangement information of the bottom guide plate is determined based on the aforementioned size parameters, and the bottom guide plate positioning step is also included: The total clearance is determined based on the sum of the preset arrangement length and the lengths of all selected bottom guide plates; If the number of bottom guide plates is greater than one, then each gap is calculated, and each gap is equal to the total gap divided by the number of bottom guide plates minus one, and each gap is rounded to a preset integer multiple. If each gap exceeds a preset threshold, one of the bottom guide plates will be replaced with a guide plate of an adjacent length from the standard parts library, and the total gap of the arrangement will be recalculated and the gap will be allocated. If the number of bottom guide plates is equal to one, then the total gap between the two ends is used as the reserved length at both ends, and the bottom guide plate is placed in the middle of the total length of the arrangement so that the reserved length at both ends is equal.

6. The method for arranging standard parts of the stamping die trolley mechanism according to claim 5, characterized in that, When matching the bottom guide plate, it also includes: The total length of the arrangement is divided into three regions of preset length along the length direction, and a V-guide plate with a length not exceeding the length of the region is selected in the middle region for arrangement. In the front and rear areas, the length of the area is used as the preset arrangement length, and the arrangement is carried out according to the bottom guide plate selection steps and the bottom guide plate positioning steps.

7. The method for arranging standard parts of the stamping die trolley mechanism according to claim 1, characterized in that, The operating parameters include the trolley retraction stroke, the pressing core stroke, and the overall mass of the trolley mechanism. The first standard component includes a drive component, an ejector component, a return component, and a lifting component.

8. The method for arranging standard parts of the stamping die trolley mechanism according to claim 7, characterized in that, The arrangement information of the first standard component is determined based on the operating parameters, specifically including: Based on the trolley retraction stroke, the pressure core stroke, and the overall mass of the trolley mechanism, select the models of the drive components, ejector components, return components, and lifting components from the standard parts library; Specifically, the stroke of the drive component is selected to be greater than or equal to the trolley retraction stroke, the stroke of the ejector component is selected to be greater than or equal to the pressure core stroke, and the rated load of the lifting component is selected to be greater than or equal to a preset multiple of the overall mass of the trolley mechanism.

9. The method for arranging standard parts of the stamping die trolley mechanism according to claim 7, characterized in that, Arranging the first standard component on the trolley mechanism according to the Cartesian coordinate system specifically includes: The bottom guide plate is arranged based on the guide plate positioning steps described above; The drive component is positioned at a first preset position on the side of the trolley mechanism; The ejector is positioned at a second predetermined position at the end of each of the ribs; The return component is positioned at a third preset position on the return block arrangement surface; The lifting component is positioned at the fourth preset position at the preset lifting allowance length at both ends of the rib.

10. The method for arranging standard parts of the stamping die trolley mechanism according to claim 4, characterized in that, When the trolley mechanism is a blade-opposite type, the arrangement information of the top guide plate is determined according to the size parameters of the rib, specifically including: The length, width, and quantity of the top guide plate are selected based on the bottom guide plate selection steps. The arrangement position of the top guide plate is determined based on the bottom guide plate positioning step; wherein, the preset arrangement length of the top guide plate is the length of the rib minus the sum of the preset lifting allowance lengths at both ends.

11. The method for arranging standard parts of the stamping die trolley mechanism according to claim 1, characterized in that, When the trolley mechanism is a blade-opposite type, the blade is arranged on the side of the trolley mechanism, specifically including: The coordinates of the arrangement of the insert on the side are calculated based on the Cartesian coordinate system. The inserter is installed on the side of the trolley mechanism according to the arrangement coordinates.

12. The method for arranging standard parts of the stamping die trolley mechanism according to claim 1, characterized in that, When the trolley mechanism is of the inserter inner type, the inserter position is determined based on the parting line, specifically including: Obtain the parting line, and then divide the parting line into a set of points at equal intervals according to the arc length, with the discrete spacing being a preset value; The side of the trolley mechanism is offset outward by a predetermined distance to form a cutting surface, and the points that are concentrated on the inside of the cutting surface are retained. The retained point set is reordered to generate effective cross-sectional parting lines; Determine the horizontal position of the top surface insert based on the effective cross-section parting line; A thin sheet of a preset width is created at the horizontal position of the top insert blade. The thin sheet is intersected with the trolley mechanism. The height of the insert blade is corrected based on the cross section obtained from the intersection, so that the insert blade and the top surface maintain a preset gap distance.

13. The method for arranging standard parts of the stamping die trolley mechanism according to claim 4, characterized in that, The arrangement information of the top guide plate is determined based on the length of the trolley mechanism, specifically including: The width parameters of the top guide plate are determined based on the bottom guide plate selection steps described above; The number of top guide plates is determined based on the length of the trolley mechanism, the preset length of the top guide plate, the preset guide plate edge allowance distance, and the preset guide plate spacing. Based on the preset guide plate spacing and quantity, the top guide plates are evenly arranged on the top surface of the trolley mechanism along the direction of the bottom rib.

14. The method for arranging standard parts of the stamping die trolley mechanism according to claim 1, characterized in that, The interference adjustment specifically includes: Calculate whether the positions of the top guide plate and the inserter overlap in three-dimensional space. If they overlap, it is determined that interference has occurred. If interference occurs, calculate the overlap length between the inserter and the guide plate in the direction of the trolley's movement, and use the sum of the overlap length and the preset safety margin as the minimum moving distance; Calculate the new positions after moving forward and backward by the minimum moving distance respectively, and select the direction that does not produce new interference and has a smaller moving distance to perform the movement; If new interference occurs in both directions, the direction with the smaller movement distance is selected first, and the detection and movement are repeated until the interference is eliminated.

15. A system based on the arrangement method of standard parts of the stamping die trolley mechanism according to claim 1, characterized in that, include: A type acquisition module is used to acquire type information of the trolley mechanism, the type of which includes a knife-side trolley and a knife-inside trolley; The coordinate system establishment module is used to identify the return block arrangement surface and the bottom surface of the trolley mechanism, and establish a Cartesian coordinate system based on the return block arrangement surface and the bottom surface. The parameter acquisition module is used to acquire the size parameters of the ribs on the bottom surface of the trolley mechanism and the operating parameters of the trolley mechanism. The processing module is used to determine the arrangement information of the bottom guide plate based on the size parameters, determine the arrangement information of the first standard part based on the operating parameters, and when the trolley mechanism is a cutter-opposite type, determine the arrangement information of the top guide plate based on the size parameters of the rib and arrange the cutter on the side of the trolley mechanism; when the trolley mechanism is a cutter-inside type, determine the cutter position based on the parting line, determine the arrangement information of the top guide plate based on the length of the trolley mechanism, and perform interference adjustment on the top guide plate; An arrangement module is used to arrange the bottom guide plate and the first standard component on the trolley mechanism according to the Cartesian coordinate system.

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