Rapid design method and system for lever system

Abstract

The invention belongs to the technical field of aircraft structural strength tests, and particularly relates to a lever system rapid design method and system. The method comprises the following steps of: 1, dividing a lever loading area; 2, a corresponding lever system is constructed for each lever loading area, each lever system comprises multiple levels of levers, and a corresponding lever calculation block is generated for each lever; 3, evaluating evaluation items in the lever system, and judging whether the evaluation items meet requirements or not; if the requirement is not met, returning to the step 1 to re-divide the lever loading area; if the requirements are met, entering the step 4; 4, reading lever calculation block data, converting the lever calculation block data into a list form, and generating a lever calculation table; 5, lever parameters in the lever calculation table are determined according to the safety coefficient requirement, and a lever machining parameter table is generated; and 6, drawing according to the lever machining parameter table.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft structure strength testing, and in particular relates to a lever system rapid design method and system. Background Art

[0002] The lever system is a commonly used connection method in aircraft static and fatigue strength tests. The main function is to combine the discrete load points on the aircraft surface into concentrated loads through the lever system, so that the force load can be applied using actuators such as actuators. The conventional design method of the lever system is to calculate the lever data in a spreadsheet. After multiple iterations to meet the requirements, a lever parameter table is made and handed over to the factory for processing. A lever system data table is also made for on-site lever system assembly. The entire design process is computationally intensive, cumbersome, error-prone, and time-consuming; and the data table is not easy to proofread and install.

[0003] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Summary of the invention

[0004] The purpose of the present application is to provide a lever system rapid design method and system to solve at least one problem existing in the prior art.

[0005] The technical solution of this application is:

[0006] The first aspect of the present application provides a lever system rapid design method, comprising:

[0007] A lever system rapid design method, characterized by comprising:

[0008] Step 1: Divide the lever loading area, each lever loading area includes a plurality of load points;

[0009] Step 2: construct a corresponding lever system for each lever loading area, wherein the lever system includes multiple levers, and generate a corresponding lever calculation block for each lever;

[0010] Step 3: Evaluate the evaluation items in the lever system to determine whether the evaluation items meet the requirements;

[0011] If the requirements are not met, return to step 1 and divide the lever loading area again;

[0012] If the requirements are met, proceed to step 4;

[0013] Step 4: read the leverage calculation block data, and convert the leverage calculation block data into a list form to generate a leverage calculation table;

[0014] Step 5: Determine the lever parameters in the lever calculation table according to the safety factor requirements, and generate a lever processing parameter table;

[0015] Step six: draw a drawing according to the lever processing parameter table.

[0016] In at least one embodiment of the present application, in step one, when dividing the lever loading area, ensure that the total load of all load points in the lever loading area does not exceed the carrying capacity of the equipment.

[0017] In at least one embodiment of the present application, in step 2, the leverage calculation block includes:

[0018] A calculation node is used to calculate the resultant force, resultant force coordinates, left arm length, right arm length, total length and lever ratio according to the obtained lever parameters to obtain lever calculation block data;

[0019] A positioning node is used to read the leverage calculation block data.

[0020] In at least one embodiment of the present application, the leverage parameters obtained include:

[0021] Left load number, left load, left arm coordinates;

[0022] Right load number, right load, right arm coordinates;

[0023] Lever number, lever specification;

[0024] Compute nodes are used to:

[0025] The resultant force is calculated based on the left load and the right load;

[0026] The left arm length is calculated based on the left arm coordinates;

[0027] The length of the right arm is calculated according to the coordinates of the right arm;

[0028] Calculate the total length and lever ratio based on the left arm length and the right arm length;

[0029] The resultant force coordinates are calculated based on the left arm coordinates and the right arm coordinates.

[0030] In at least one embodiment of the present application, in step 3, the evaluation items include:

[0031] Leverage ratio: when the leverage ratio is less than or equal to 4:1, it is considered to meet the requirements;

[0032] The total number of leverage levels: when the total number of leverage levels is less than 7, it is considered to meet the requirements.

[0033] In at least one embodiment of the present application, in step 5, determining the lever parameters in the lever calculation table according to the safety factor requirement includes:

[0034] Determine the lever specifications in the lever calculation table according to the lever safety factor requirements;

[0035] Determine the center hole diameter in the lever calculation table according to the center hole bolt safety factor requirement;

[0036] Determine the side hole diameter in the lever calculation table according to the side hole bolt safety factor requirement;

[0037] The left hole distance and the right hole distance in the lever calculation table are determined according to the center hole diameter and the side hole diameter.

[0038] In at least one embodiment of the present application, in step six, a lever assembly diagram is drawn according to the lever processing parameter table, and the lever assembly diagram includes the lever number, left arm length, right arm length, middle hole diameter, side hole diameter, left hole distance and right hole distance of each level of lever.

[0039] In at least one embodiment of the present application, in step six, a three-dimensional assembly drawing with a lever baseline is drawn according to the lever processing parameter table.

[0040] A second aspect of the present application provides a lever system rapid design system, comprising:

[0041] A region division module, used for dividing the lever loading region, each of the lever loading regions includes a plurality of load points;

[0042] A lever calculation block generation module, used for constructing a corresponding lever system for each lever loading area, wherein the lever system includes multiple levers, and generating a corresponding lever calculation block for each lever;

[0043] An evaluation module, used to evaluate the evaluation items in the lever system and determine whether the evaluation items meet the requirements;

[0044] If the requirements are not met, return to the area division module to re-divide the leverage loading area;

[0045] If the requirements are met, enter the leverage calculation table generation module;

[0046] A leverage calculation table generating module, used for reading the leverage calculation block data, converting the leverage calculation block data into a list form, and generating a leverage calculation table;

[0047] A lever processing parameter table generating module, used to determine the lever parameters in the lever calculation table according to the safety factor requirements, and generate a lever processing parameter table;

[0048] A drawing module is used to draw a drawing according to the lever processing parameter table.

[0049] The invention has at least the following beneficial technical effects:

[0050] The lever system rapid design method of the present application can realize the lever system design rapidly, vividly, accurately and easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram showing the meaning of a lever calculation unit according to one embodiment of the present application;

[0052] Figure 2 is a schematic diagram of a calculation node of a lever calculation unit according to an embodiment of the present application;

[0053] Figure 3 is a schematic diagram of a leverage calculation block according to an embodiment of the present application;

[0054] Figure 4 is a lever assembly diagram of an embodiment of the present application;

[0055] Figure 5 is a three-dimensional assembly diagram with a lever baseline according to one embodiment of the present application;

[0056] Figure 6 It is a lever calculation block generation interface of one implementation mode of the present application;

[0057] Figure 7 It is a leverage calculation table generation interface of an implementation mode of the present application;

[0058] Figure 8 It is a lever assembly diagram drawing interface of one embodiment of the present application;

[0059] Fig. 9 It is a three-dimensional assembly drawing interface of one embodiment of the present application. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0061] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0062] The following is combined with Figures 1 to 9 This application is described in further detail.

[0063] The first aspect of the present application provides a lever system rapid design method, comprising the following steps:

[0064] Step 1: Divide the lever loading area, each lever loading area includes multiple load points;

[0065] Step 2: construct a corresponding lever system for each lever loading area, the lever system includes multiple levers, and generate a corresponding lever calculation block for each lever;

[0066] Step 3: Evaluate the evaluation items in the leverage system to determine whether the evaluation items meet the requirements;

[0067] If the requirements are not met, return to step 1 and divide the lever loading area again;

[0068] If the requirements are met, proceed to step 4;

[0069] Step 4: Read the leverage calculation block data, convert the leverage calculation block data into a list form, and generate a leverage calculation table;

[0070] Step 5: Determine the lever parameters in the lever calculation table according to the safety factor requirements and generate a lever processing parameter table;

[0071] Step 6. Draw the drawing according to the lever processing parameter table.

[0072] The rapid design method of the lever system of the present application, in step one, sets the load point partition, divides the lever loading area according to the load-bearing capacity of the existing equipment, and ensures that the total load of all load points in the lever loading area does not exceed the equipment load-bearing capacity.

[0073] In the rapid design method of the lever system of the present application, in step 2, lever calculation blocks are generated one by one in a spreadsheet, and each calculation block represents a lever; the lever system of each lever loading area is calculated using the lever calculation blocks in the order of the first-level lever and the second-level lever.

[0074] In a preferred embodiment of the present application, the lever calculation block includes: a calculation node, which is used to calculate the resultant force, resultant force coordinates, left arm length, right arm length, total length and lever ratio according to the obtained lever parameters, and obtain the lever calculation block data; a positioning node, which is used to read the lever calculation block data. In this embodiment, the obtained lever data includes: left load number, left load, left arm coordinates; right load number, right load, right arm coordinates; lever number, lever specifications; wherein the calculation node is used to calculate the resultant force according to the left load and the right load; calculate the left arm length according to the left arm coordinates; calculate the right arm length according to the right arm coordinates; calculate the total length and lever ratio according to the left arm length and the right arm length; calculate the resultant force coordinates according to the left arm coordinates and the right arm coordinates.

[0075] like Figure 1-2 As shown, the lever calculation block obtains data by establishing associations between the left and right load numbers, left and right loads, left and right first coordinates, left and right second coordinates and the data table respectively; then the resultant force, resultant force first coordinate, resultant force second coordinate, lever left arm length, lever right arm length, total length and lever ratio are automatically calculated through the formulas in the calculation nodes contained in the calculation block. The lever calculation block automatically generates lever numbers, which can also be manually replaced with more meaningful lever numbers. The lever calculation block identifies the lever and its position through the positioning node identifier in the calculation block. This identifier is the key to establishing the connection relationship of the lever calculation block and reading the data of the lever calculation block. Because all calculation processes are generated through connection associations, the calculation results will be automatically refreshed after changing the load, coordinate or lever number in the data table, which is very convenient for data change operations.

[0076] Figure 3 An example of lever system composed by lever calculation block is given in . The lever system generated by lever calculation block is very close to the actual composition of the lever system and can clearly express the relationship, distribution and load conditions of levers at all levels.

[0077] In the lever system rapid design method of the present application, in step 3, the lever system is evaluated including: whether the lever ratio of all levers is reasonable and whether the total number of levers is reasonable. The evaluation items include: lever ratio, when the lever ratio is less than or equal to 4:1, it is considered to meet the requirements; total number of levers, when the total number of levers is less than 7, it is considered to meet the requirements.

[0078] In the lever system rapid design method of the present application, in step four, the lever calculation block data is read through the positioning node in the lever calculation block, and the lever calculation block data is converted into a list form to generate a lever calculation table.

[0079] In the rapid design method of the lever system of the present application, in step five, the safety factor includes the lever safety factor, the center hole bolt safety factor, and the side hole bolt safety factor. The value of each safety factor is calculated by the ratio of the breaking load to the use load (F, F1, and F2 are all use loads). Select the appropriate lever specification according to the lever safety factor; select the appropriate center hole diameter and side hole diameter according to the center hole bolt safety factor and the side hole bolt safety factor; select the appropriate left hole distance and right hole distance according to the determined center hole diameter and side hole diameter. The lever calculation table data obtained by converting the lever calculation block data, as well as the selected lever specifications, center hole diameter, side hole diameter, left hole distance, right hole distance and other data are used to generate a lever processing parameter table, which is handed over to the factory for processing and production.

[0080] As shown in Table 1, by measuring the value of the safety factor to adjust the lever specifications, the diameter of the middle bolt hole and the bolt holes on both sides, the lever design that meets the strength requirements is achieved, and the lever processing parameters are obtained.

[0081] Table 1

[0082]

[0083] The lever system rapid design method of the present application, finally, in step 6, draws a lever assembly diagram and a three-dimensional assembly diagram with a lever baseline according to the lever processing parameter table. Figure 4 As shown in the figure, it is a lever assembly drawing, which includes the lever number, left arm length, right arm length, middle hole diameter, side hole diameter, left hole distance and right hole distance of each level of lever, which can be printed out for on-site lever assembly. Figure 5 The 3D assembly drawing with lever baseline drawn for CATIA can be used for the 3D model design of the test system.

[0084] A second aspect of the present application provides a lever system rapid design system, comprising:

[0085] A region division module is used to divide the lever loading region, each lever loading region includes a plurality of load points;

[0086] A lever calculation block generation module is used to construct a corresponding lever system for each lever loading area, the lever system includes multiple levers, and a corresponding lever calculation block is generated for each lever;

[0087] An evaluation module is used to evaluate the evaluation items in the lever system and determine whether the evaluation items meet the requirements;

[0088] If the requirements are not met, return to the area division module to re-divide the leverage loading area;

[0089] If the requirements are met, enter the leverage calculation table generation module;

[0090] A leverage calculation table generation module is used to read the leverage calculation block data, convert the leverage calculation block data into a list form, and generate a leverage calculation table;

[0091] A lever processing parameter table generation module is used to determine the lever parameters in the lever calculation table according to the safety factor requirements and generate a lever processing parameter table;

[0092] A drawing module is used to draw according to the lever processing parameter table.

[0093] In a preferred embodiment of the present application, a spreadsheet is used in combination with a program written in VBA or JAVA to realize a rapid design system design of a lever system.

[0094] like Figure 6 As shown, in the interface for generating the lever calculation block, by activating the "load point number" of the spreadsheet or the "positioning" of the calculation block, and then clicking "left positioning", the data association of the left load number, left load, left first coordinate, and left second coordinate can be automatically established; similarly, after establishing the right data association, activate the cell of the pre-generated lever calculation block, and then click "generate lever" to automatically generate the calculation block.

[0095] like Figure 7 As shown, in the leverage calculation table generation interface, all calculation block data in the current spreadsheet page can be read, and all calculation block data on all pages of the current spreadsheet can also be read.

[0096] like Figure 8 As shown, in the lever assembly diagram drawing interface, the read calculation block data can be output in the form of a list or drawn into a lever assembly diagram.

[0097] like Fig. 9 As shown, in the CATIA drawing interface, the read calculation block data can be output to the CATAI software to draw the lever baseline, or the three-dimensional lever digital model can be automatically assembled.

[0098] The lever system rapid design system of this application has the following advantages:

[0099] The calculation process is programmed and does not require manual calculation, which reduces errors and improves efficiency;

[0100] The calculation process is graphical, which is more vivid, easier to understand, analyze and proofread;

[0101] The calculation process is convenient, and you only need to click and drag the mouse to complete complex calculations, analysis, and drawing processes;

[0102] It has comprehensive functions, realizing the whole process from lever design, calculation, analysis to output of processing parameter table and lever assembly drawing.

[0103] The lever system rapid design method and system of the present application solves the problem that the calculation process is cumbersome, inefficient and error-prone, and solves the problem that the calculation process is abstract, difficult to understand and difficult to proofread.

[0104] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for rapid design of a lever system, characterized in that: include: Step 1: Divide the lever loading area, each lever loading area includes a plurality of load points; Step 2: construct a corresponding lever system for each lever loading area, wherein the lever system includes multiple levers, and generate a corresponding lever calculation block for each lever; Step 3: Evaluate the evaluation items in the lever system to determine whether the evaluation items meet the requirements; If the requirements are not met, return to step 1 and divide the lever loading area again; If the requirements are met, proceed to step 4; Step 4: read the leverage calculation block data, and convert the leverage calculation block data into a list form to generate a leverage calculation table; Step 5: Determine the lever parameters in the lever calculation table according to the safety factor requirements, and generate a lever processing parameter table; Step six: draw a drawing according to the lever processing parameter table.

2. The lever system rapid design method according to claim 1, characterized in that: In step 1, when dividing the lever loading area, ensure that the total load of all load points in the lever loading area does not exceed the equipment bearing capacity.

3. The lever system rapid design method according to claim 1, characterized in that: In step 2, the leverage calculation block includes: A calculation node is used to calculate the resultant force, resultant force coordinates, left arm length, right arm length, total length and lever ratio according to the obtained lever parameters to obtain lever calculation block data; A positioning node is used to read the leverage calculation block data.

4. The lever system rapid design method according to claim 3, characterized in that: The leverage parameters obtained include: Left load number, left load, left arm coordinates; Right load number, right load, right arm coordinates; Lever number, lever specification; Compute nodes are used to: The resultant force is calculated based on the left load and the right load; The left arm length is calculated based on the left arm coordinates; The length of the right arm is calculated according to the coordinates of the right arm; Calculate the total length and lever ratio based on the left arm length and the right arm length; The resultant force coordinates are calculated based on the left arm coordinates and the right arm coordinates.

5. The lever system rapid design method according to claim 4, characterized in that: In step 3, the evaluation items include: Leverage ratio: when the leverage ratio is less than or equal to 4:1, it is considered to meet the requirements; The total number of leverage levels: when the total number of leverage levels is less than 7, it is considered to meet the requirements.

6. The lever system rapid design method according to claim 5, characterized in that: In step 5, the lever parameters in the lever calculation table are determined according to the safety factor requirements, including: Determine the lever specifications in the lever calculation table according to the lever safety factor requirements; Determine the center hole diameter in the lever calculation table according to the center hole bolt safety factor requirement; Determine the side hole diameter in the lever calculation table according to the side hole bolt safety factor requirement; The left hole distance and the right hole distance in the lever calculation table are determined according to the center hole diameter and the side hole diameter.

7. The lever system rapid design method according to claim 6, characterized in that: In step six, a lever assembly diagram is drawn according to the lever processing parameter table, wherein the lever assembly diagram includes the lever number, left arm length, right arm length, middle hole diameter, side hole diameter, left hole distance and right hole distance of each level of lever.

8. The lever system rapid design method according to claim 1, characterized in that: In step six, a three-dimensional assembly drawing with a lever baseline is drawn according to the lever processing parameter table.

9. A lever system rapid design system, characterized in that: include: A region division module, used for dividing the lever loading region, each of the lever loading regions includes a plurality of load points; A lever calculation block generation module, used for constructing a corresponding lever system for each lever loading area, wherein the lever system includes multiple levers, and generating a corresponding lever calculation block for each lever; An evaluation module, used to evaluate the evaluation items in the lever system and determine whether the evaluation items meet the requirements; If the requirements are not met, return to the area division module to re-divide the leverage loading area; If the requirements are met, enter the leverage calculation table generation module; A leverage calculation table generating module, used for reading the leverage calculation block data, converting the leverage calculation block data into a list form, and generating a leverage calculation table; A lever processing parameter table generating module, used to determine the lever parameters in the lever calculation table according to the safety factor requirements, and generate a lever processing parameter table; A drawing module is used to draw a drawing according to the lever processing parameter table.

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