Automatic positioning method of tightening tools based on TC system

Abstract

The present invention provides a method for automatically positioning a tightening tool based on a TC system, and belongs to the field of automobile technology. It solves the problem of low efficiency in the manual selection and allocation of existing tightening tools. The method for automatically positioning a tightening tool based on a TC system includes: generating tool ID information corresponding to a tightening tool model in a TC system; matching the torque, thread specifications and importance levels of various standard parts applied to a whole vehicle with the tool ID information and generating a tool comparison table to be stored in the TC system; traversing the selected whole vehicle structure object, comparing the standard part information with the information in the tool comparison table to obtain the tool ID information; automatically retrieving the tightening tool model to the structural level where the standard part is located according to the tool ID information and adjusting the coordinate information of the tightening tool model to the absolute coordinate information of the standard part, so that the tightening tool model is automatically positioned on the standard part. The present invention can realize automatic selection and positioning of tightening tools and improve work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of automobiles and relates to an automatic positioning method for a tightening tool based on a TC system. Background Art

[0002] At present, major automobile manufacturers are launching more and more new models, and the time interval between launches is getting shorter and shorter. At the same time, users' requirements for quality are getting higher and higher. The SE (simultaneous engineering) inspection work in the current model development process includes: tightening the standard parts in the 3D data through virtual tightening tools, and judging whether the tightening tools interfere with other parts during the tightening operation. If there is interference, it means that the standard parts cannot be tightened and the model design is not compliant.

[0003] In the existing SE (simultaneous engineering) inspection work, the selection and assembly of tightening tools are all operated by traditional manual methods. If the man-hour model is calculated according to the volume of 10 projects, each project needs to undergo four rounds of SE synchronous engineering data inspection, which are carried out in the four stages of CR / V0 / V1 / V2. Then there are about 1,000 tightening points for each vehicle model project in each round of inspection. Each tightening point needs to be manually inspected in the following way each time: download data - manually select the appropriate tool according to the standard part model and torque information - import CATIA software - manually move and position - check. The whole process has the following problems: CATIA data needs to be downloaded to the local computer in advance, and the download speed is slow. The data is not lightweight and occupies a large amount of local hard disk space; manual tool selection is slow and time-consuming; the tools can only be moved, positioned and assembled manually one by one, which is inefficient and time-consuming, and the operation efficiency is extremely low for novices; due to the large amount of data, the software operation is prone to jamming; the position accuracy is low, and there is a possibility of deviation, which affects the analysis results; the selected tools need to be manually reassigned to the workstations. It can be seen that this method seriously restricts the work efficiency of engineers, and has problems such as poor timeliness and accuracy, large investment in personnel resources, high requirements for personnel's professional qualities and long cycles, and the accuracy and quality of data inspection cannot be guaranteed. Summary of the invention

[0004] The purpose of the present invention is to address the above problems existing in the prior art and to propose a method for automatic positioning of tightening tools based on a TC system. The technical problem to be solved is: how to achieve automatic selection and positioning of tightening tools and improve work efficiency.

[0005] The object of the present invention can be achieved by the following technical solution: A method for automatically positioning a tightening tool based on a TC system comprises the following steps:

[0006] Upload various types of tightening tool models to the TC system and generate corresponding tool ID information in the TC system;

[0007] Match the torque, thread specifications and importance levels of various standard parts used in the vehicle with the tool ID information obtained above, compile and generate a tool comparison table and store it in the TC system;

[0008] Traverse the selected vehicle structure object in the TC system and obtain standard parts information, compare the standard parts information with the information in the tool comparison table, and obtain the corresponding tool ID information;

[0009] The tightening tool model stored in the TC system is automatically retrieved according to the tool ID information, the tightening tool model is automatically placed in the structural level where the standard part is located, and the coordinate information of the tightening tool model is adjusted to the absolute coordinate information of the standard part, so that the tightening tool model is automatically positioned on the standard part.

[0010] In the automatic positioning method of tightening tools based on the TC system, the TeamCenter system (TC for short) is Siemens' product lifecycle management software, which is used to visualize the entire process of the product lifecycle through a tree directory structure. In order to realize automatic positioning of tightening tools, firstly, various types of tightening tool models and corresponding socket models are imported into the TC system to generate corresponding tool ID information, wherein the tightening tool model data and the socket model data are existing model data, and then the torque, thread specifications and importance levels of various standard parts used in the whole vehicle are matched with the tool ID information, and a tool comparison table containing parameters such as thread specifications, torque levels, whether a socket is required, tool models and tool ID information is generated and stored in the TC system. The standard parts refer to products such as bolts, screws, nuts, etc. whose structures, dimensions, drawing methods, markings, etc. have been completely standardized; the whole vehicle structure object is traversed to obtain standard parts information, including specifications, torque and coordinate positions, etc., and the obtained standard parts information is compared with the tool comparison table, and a suitable tightening tool model is selected and assigned to the location of the standard part, and the coordinates of the tightening tool model are adjusted according to the absolute coordinate information of the location of the standard part, so that the tightening tool is accurately positioned on the standard part, and the operation does not require manual positioning, and the positioning accuracy is high. In addition, the tightening tool realizes automatic selection and positioning, which improves work efficiency and quality.

[0011] In the above-mentioned automatic positioning method for tightening tools based on the TC system, the standard part information includes torque, absolute coordinates, thread specifications and importance level information of the standard part.

[0012] In the above-mentioned automatic positioning method for tightening tools based on the TC system, the automatic positioning method for tightening tools further includes the following steps:

[0013] Upload the sleeve model corresponding to the tightening tool model to the TC system;

[0014] The tool comparison table also includes a parameter item indicating whether a sleeve is required;

[0015] While obtaining the corresponding tool ID information, the information of whether a sleeve is needed in the tool comparison table is also obtained. When the information of the sleeve is needed, the operation of the sleeve positioning tightening tool model is entered. Tightening work sometimes requires a sleeve to be used, so increasing the judgment of the sleeve demand can improve the accuracy of tightening tool positioning.

[0016] In the above-mentioned automatic positioning method for tightening tools based on the TC system, the operation of entering the sleeve positioning tightening tool model includes:

[0017] Automatically retrieve the sleeve model corresponding to the tightening tool model stored in the TC system according to the tool ID information;

[0018] Automatically place the retrieved sleeve model and tightening tool model to the level where the standard parts are located;

[0019] The coordinate information of the sleeve model is automatically adjusted to the absolute coordinate information of the standard part, so that the sleeve model is automatically positioned on the standard part, and then the coordinate information of the tightening tool model is adjusted to the adjusted coordinate information of the sleeve model, so that the tightening tool model is automatically positioned on the sleeve model.

[0020] In the above-mentioned automatic positioning method for tightening tools based on the TC system, the operation of adjusting the coordinate information of the tightening tool model to the coordinate information of the sleeve model after adjustment is as follows:

[0021] After the sleeve model is automatically positioned on the standard part, the absolute coordinate information of the sleeve model installation point is the absolute coordinate information of the standard part;

[0022] According to the absolute coordinate information of the installation point of the sleeve model, the absolute coordinate information of the installation point of the tightening tool model for positioning the tightening tool model on the sleeve model is calculated through a three-dimensional space matrix transformation formula;

[0023] The coordinate information of the tightening tool model is then automatically adjusted to the absolute coordinate information of the installation point of the tightening tool model calculated above.

[0024] The sleeve model is a device with a certain length. When positioning, the coordinate information of the barrel mouth of one end face of the sleeve model is the absolute coordinate information of the standard part, and the coordinate information of the barrel mouth of the other end face of the sleeve model is the coordinate information that the tightening tool model needs to be positioned to. By calculating the absolute coordinate information of the barrel mouth of the sleeve model farthest from the standard part in three-dimensional space, the tightening tool model can be accurately positioned.

[0025] In the above-mentioned automatic positioning method of tightening tools based on TC system,

[0026] The operation of calculating the absolute coordinate information of the installation point of the tightening tool model for locating the tightening tool model on the sleeve model through the three-dimensional space matrix transformation formula is:

[0027] The absolute coordinate information of the installation point of the sleeve model in the absolute coordinate system is recorded as {A11, A12, A13, 0, A21, A22, A23, 0, A31, A32, A33, 0, AX, AY, AZ, 1};

[0028] Among them, A11, A12, A13 represent the direction data of the sleeve model on the X axis, A21, A22, A23 represent the direction data of the sleeve model on the Y axis, A31, A32, A33 represent the direction data of the sleeve model on the Z axis, AX, AY, AZ represent the coordinate values ​​of the installation point of the sleeve model;

[0029] The absolute coordinate information of the installation point of the tightening tool model used to locate the tightening tool model on the sleeve model is calculated by the three-dimensional space matrix transformation formula:

[0030] X=X0+X1*(A22*A33-A32*A23)-Y1*(A12*A33-A32*A13)+Z1*(A12*A23-A13*A22);

[0031] Y=Y0+X1*(A23*A31-A33*A21)-Y1*(A13*A31-A33*A11)+Z1*(A13*A21-A11*A23);

[0032] Z=Z0+X1*(A21*A32-A31*A22)-Y1*(A11*A32-A31*A12)+Z1*(A11*A22-A12*A21);

[0033] Among them, X0, Y0 and Z0 are the coordinate values ​​of the installation point of the tightening tool model in the sleeve model coordinate system, X1, Y1, Z1 are the coordinate values ​​of the installation point of the sleeve model, and X, Y, Z are the absolute coordinate information of the installation point of the tightening tool model. In the above-mentioned automatic positioning method of tightening tools based on the TC system, the operation of traversing the selected vehicle structure object in the TC system and obtaining the standard part information includes:

[0034] When the selected vehicle structure object is an EBOM structure, determine whether it is a BOMLine object. If it is a BOMLine object, traverse all levels under the BOMLine object. If the object type is found to be a standard part, do not continue to traverse the next level.

[0035] Read the torque table under the BOMLine object in the specification relationship according to the found standard parts to obtain the torque, thread specifications and importance level of the standard parts;

[0036] The absolute coordinate information of the standard parts is obtained through the absolute transformation matrix attribute. BOM (Bill of Material) is a file that describes the product structure in a data format. It is a product structure data file that can be recognized by a computer. The standard parts information is recorded at the corresponding level of the BOM structure. If the object type is the standard part type, the torque specification and importance level of the standard part can be accurately obtained by searching the standard part type, and the absolute coordinate information of the standard part can be obtained by searching the absolute transformation matrix attribute.

[0037] In the above-mentioned automatic positioning method for tightening tools based on the TC system, the operation of traversing the selected vehicle structure object and obtaining standard part information in the TC system includes:

[0038] When the selected vehicle structure object is a DBOM structure, determine whether it is a BOMLine object. If it is a BOMLine object, traverse all levels under the BOMLine object. If the object type is found to be a standard part, do not continue to traverse the next level.

[0039] According to the found standard parts, the torque, thread specification and importance level recorded in the BOMLine attribute are obtained;

[0040] The absolute coordinate information of the standard part is obtained through the absolute transformation matrix attribute. There are two forms of BOM structure, one is EBOM structure and the other is DBOM structure. When it is DBOM structure, the BOMLine attribute under the BOMLine object is obtained through the found standard part type, so as to obtain the torque specification and importance level of the standard part.

[0041] In the above-mentioned automatic positioning method for tightening tools based on the TC system, the operation of traversing the selected vehicle structure object and obtaining standard part information in the TC system includes:

[0042] When the selected vehicle structure object is a BOP structure, determine whether it is a BOMLine object. If it is a BOMLine object, traverse all levels under the BOMLine object to determine whether all BOMViewRevision objects of Operation type have write permission. If they have write permission, obtain all object types under Operation with MEConsumed relationship through traversal. If the object type is found to be a standard part, do not continue to traverse the next level.

[0043] Obtain the torque, thread specifications and importance level of the standard parts based on the found standard parts;

[0044] The absolute transformation matrix attribute is used to obtain the absolute coordinate information of the standard part. The bill of process (BOP) is a file that describes the product structure in a data format and is a product structure data file that can be recognized by a computer. When determining whether it is a BOMLine object, determine whether all BOMViewRevision objects of the Operation type have write permissions. This operation ensures that the tightening tool model can be placed in the BOP structure so that the tightening tool model can be located on the standard part.

[0045] In the above-mentioned automatic positioning method for tightening tools based on the TC system, the operation of judging whether all BOMViewRevision objects of the Operation type have the write permission also includes:

[0046] When it is determined that the BOMViewRevision of the object type Operation does not have the write permission, the Operation object information without the permission is recorded, and a prompt is given as to whether to continue to determine whether the next BOMViewRevision of the object type Operation has the write permission. If all BOMViewRevisions of the object type Operation do not have the write permission, the Operation object information without the permission is recorded, and an error prompt is given.

[0047] Compared with the prior art, the automatic positioning method for tightening tools based on the TC system has the following advantages:

[0048] 1. The present invention realizes automatic selection and positioning of tightening tools through the TC system, changing the original manual method to a one-button automatic method, which is easy to operate, effectively improves work efficiency and quality, and solves the problem of inaccurate manual positioning. The automatic positioning of tightening tools has high accuracy.

[0049] 2. The present invention does not need to download CATIA data, and the operating environment does not need to be switched to CATIA software. It can be completed with one click without complicated operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a control flow chart of the present invention.

[0051] Figure 2 It is a control flow chart of the first embodiment of the present invention.

[0052] Figure 3 This is a control flow chart of the second embodiment of the present invention.

[0053] Figure 4 It is a control flow chart of embodiment 3 of the present invention. DETAILED DESCRIPTION

[0054] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0055] Embodiment 1:

[0056] like Figure 1 , 2 As shown, the automatic positioning method of tightening tools based on the TC system includes the following steps:

[0057] Upload various types of tightening tool models and sleeve models corresponding to the tightening tool models to the TC system and generate corresponding tool ID information in the TC system;

[0058] The torque, thread specifications and importance levels of various standard parts used in the vehicle are matched with the tool ID information obtained in the previous step, and a tool comparison table is generated and stored in the TC system. The tool comparison table also has a column item for whether a socket is required. The tool comparison table can be organized as follows:

[0059]

[0060] Then, the selected vehicle structure objects are traversed in the TC system to obtain standard parts information, which includes torque, absolute coordinates, thread specifications and importance level information of standard parts. The traversal process is as follows:

[0061] When the selected vehicle structure object is an EBOM structure, determine whether it is a BOMLine object. If it is not a BOMLine object, an error prompt will be given. If it is a BOMLine object, traverse all levels under the BOMLine object. If the object type is found to be a standard part, do not continue to traverse the next level.

[0062] Read the torque table under the BOMLine object in the specification relationship according to the found standard parts to obtain the torque, thread specifications and importance level of the standard parts;

[0063] Get the absolute coordinate information of the standard part through the absolute transformation matrix attribute.

[0064] The torque, thread specification and importance level information of the obtained standard parts are compared with the information of the sorted and generated tool comparison table to obtain the corresponding tool ID information and determine whether the information corresponding to the item of whether a socket is required in the tool comparison table is yes or no. When the information that a socket is required is yes, the tightening tool model stored in the TC system and the socket model corresponding to the tightening tool model are automatically retrieved according to the tool ID information; the socket model is automatically placed at the level where the standard parts are located and the coordinate information of the socket model is adjusted to the absolute coordinate information of the standard parts, so that the socket model is automatically positioned on the socket model; the tightening tool model is automatically placed at the level where the standard parts are located and the coordinate information of the tightening tool model is adjusted to the adjusted coordinate information of the socket model, so that the tightening tool model is automatically positioned on the socket model. The specific operation of adjusting the coordinate information of the tightening tool model to the adjusted coordinate information of the sleeve model is as follows: after the sleeve model is automatically positioned on the standard part, the absolute coordinate information of the installation point of the sleeve model is the absolute coordinate information of the standard part; the absolute coordinate information of the installation point of the tightening tool model used to locate the tightening tool model on the sleeve model is calculated through the three-dimensional space matrix transformation formula according to the absolute coordinate information of the installation point of the sleeve model; and then the coordinate information of the tightening tool model is automatically adjusted to the absolute coordinate information of the installation point of the tightening tool model calculated in the previous step. The absolute coordinate information of the installation point of the tightening tool model is obtained according to the following method:

[0065] The absolute coordinate information of the installation point of the sleeve model in the absolute coordinate system is recorded as {A11, A12, A13, 0, A21, A22, A23, 0, A31, A32, A33, 0, AX, AY, AZ, 1};

[0066] Among them, A11, A12, A13 represent the direction data of the sleeve model on the X axis, A21, A22, A23 represent the direction data of the sleeve model on the Y axis, A31, A32, A33 represent the direction data of the sleeve model on the Z axis, AX, AY, AZ represent the coordinate values ​​of the installation point of the sleeve model;

[0067] The absolute coordinate information of the installation point of the tightening tool model used to locate the tightening tool model on the sleeve model is calculated by the three-dimensional space matrix transformation formula:

[0068] X=X0+X1*(A22*A33-A32*A23)-Y1*(A12*A33-A32*A13)+Z1*(A12*A23-A13*A22);

[0069] Y=Y0+X1*(A23*A31-A33*A21)-Y1*(A13*A31-A33*A11)+Z1*(A13*A21-A11*A23);

[0070] Z=Z0+X1*(A21*A32-A31*A22)-Y1*(A11*A32-A31*A12)+Z1*(A11*A22-A12*A21);

[0071] Among them, X0, Y0 and Z0 are the coordinate values ​​of the installation point of the tightening tool model in the sleeve model coordinate system, X1, Y1, Z1 are the coordinate values ​​of the installation point of the sleeve model, and X, Y, Z are the absolute coordinate information of the installation point of the tightening tool model.

[0072] Assuming that the coordinates and directions of the standard parts recorded in the TC system are 100 0 010 0 001 0 100 200 1501, the absolute coordinates (standard parts coordinates) of the sleeve installation point in the absolute coordinate system are: (100, 200, 150); assuming that the sleeve height is 50, the coordinate value of the tightening tool model installation point in the sleeve model coordinate system is (0, 0, 50);

[0073] According to the calculation formula of X, Y, Z, calculate the coordinates of the installation point of the tightening tool model in the absolute coordinate system:

[0074] X=0+100*(1*1-0*0)-200*(0*1-0*0)+150*(0*0-0*1)=100

[0075] Y=0+100*(0*0-1*0)-200*(0*0-1*1)+150*(0*0-1*0)=200

[0076] Z=50+100*(0*0-0*1)-200*(1*0-0*0)+150*(1*1-0*0)=50+150=200

[0077] That is, the coordinates of the installation point of the tightening tool model in the absolute coordinate system are (100, 200, 200)

[0078] The coordinate and direction records of the installation point of the tightening tool model in the TC system are 100 0 010 0 001 0 100200 200 1, that is, the absolute coordinate information to which the tightening tool model will be positioned is 100 0 010 0 001 0 100 200 2001.

[0079] If the answer is no, that is, the information of the sleeve is not needed, the tightening tool model stored in the TC system is automatically retrieved according to the tool ID information, the tightening tool model is automatically placed in the structural level where the standard part is located, and the coordinate information of the tightening tool model is adjusted to the absolute coordinate information of the standard part, so that the tightening tool model is automatically positioned on the standard part. This automatic positioning method for tightening tools based on the TC system realizes the automatic selection and positioning of tightening tools without manual selection, thereby improving work efficiency and quality.

[0080] Embodiment 2:

[0081] like Figure 3 As shown, the technical solution in this embodiment is basically the same as the technical solution in the first embodiment, except that the operation of traversing the selected vehicle structure object and obtaining the standard parts information in the TC system includes:

[0082] When the selected vehicle structure object is a DBOM structure, determine whether it is a BOMLine object. If it is a BOMLine object, traverse all levels under the BOMLine object. If the object type is found to be a standard part, do not continue to traverse the next level.

[0083] According to the found standard parts, the torque, thread specification and importance level of the standard parts recorded in the BOMLine attributes are obtained;

[0084] Get the absolute coordinate information of the standard part through the absolute transformation matrix attribute.

[0085] Embodiment three:

[0086] like Figure 4 As shown, the technical solution in this embodiment is basically the same as the technical solution in the first embodiment, except that the operation of traversing the selected vehicle structure object and obtaining the standard parts information in the TC system includes:

[0087] When the selected vehicle structure object is a BOP structure, determine whether it is a BOMLine object. If it is a BOMLine object, traverse all levels under the BOMLine object to determine whether all BOMViewRevision objects of Operation type have write permission. If they have write permission, obtain all object types under Operation with MEConsumed relationship through traversal. If the object type is found to be a standard part, do not continue to traverse the next level.

[0088] Obtain the torque, thread specification and importance level of the standard part according to the found standard part. In this step, the torque, thread specification and importance level recorded in the BOMLine attribute are obtained according to the found standard part, or the torque form under the BOMLine object in a specification relationship is read according to the found standard part to obtain the torque, thread specification and importance level;

[0089] Get the absolute coordinate information of the standard part through the absolute transformation matrix attribute.

[0090] When it is determined that the BOMViewRevision of the object type Operation does not have the write permission, the Operation object information without the permission is recorded, and a prompt is given as to whether to continue to determine whether the next BOMViewRevision of the object type Operation has the write permission. If all BOMViewRevisions of the object type Operation do not have the write permission, the Operation object information without the permission is recorded, and an error prompt is given.

[0091] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. The automatic positioning method of tightening tools based on TC system is characterized by: The steps include: Upload various types of tightening tool models to the TC system and generate corresponding tool ID information in the TC system; upload the sleeve model corresponding to the tightening tool model to the TC system; Match the torque, thread specifications and importance levels of various standard parts used in the vehicle with the tool ID information obtained above, compile and generate a tool comparison table and store it in the TC system; In the TC system, the selected vehicle structure object is traversed and the standard part information is obtained. The standard part information is compared with the information in the tool comparison table, the corresponding tool ID information is obtained, and the information corresponding to the item of whether the socket is needed in the tool comparison table is determined to be yes or no. When the information that the socket is needed is yes, the tightening tool model stored in the TC system and the socket model corresponding to the tightening tool model are automatically retrieved according to the tool ID information; the socket model is automatically placed at the level where the standard part is located and the coordinate information of the socket model is adjusted to the absolute coordinate information of the standard part, so that the socket model is automatically positioned on the socket model; the tightening tool model is automatically placed at the level where the standard part is located and the coordinate information of the tightening tool model is adjusted to the adjusted coordinate information of the socket model. The operation is as follows: after the socket model is automatically positioned on the standard part, the absolute coordinate information of the installation point of the socket model is the absolute coordinate information of the standard part; According to the absolute coordinate information of the installation point of the sleeve model, the absolute coordinate information of the installation point of the tightening tool model used to locate the tightening tool model on the sleeve model is calculated through the three-dimensional space matrix transformation formula. The operation is: The absolute coordinate information of the installation point of the sleeve model in the absolute coordinate system is recorded as {A11, A12, A13, 0, A21, A22, A23, 0, A31, A32, A33, 0, AX, AY, AZ, 1}; Among them, A11, A12, A13 represent the direction data of the sleeve model on the X axis, A21, A22, A23 represent the direction data of the sleeve model on the Y axis, A31, A32, A33 represent the direction data of the sleeve model on the Z axis, AX, AY, AZ represent the coordinate values ​​of the installation point of the sleeve model; The absolute coordinate information of the installation point of the tightening tool model used to locate the tightening tool model on the sleeve model is calculated by the three-dimensional space matrix transformation formula: X=X0+X1*(A22*A33-A32*A23)-Y1*(A12*A33-A32*A13)+Z1*(A12*A23-A13*A22); Y=Y0+X1*(A23*A31-A33*A21)-Y1*(A13*A31-A33*A11)+Z1*(A13*A21-A11*A23); Z=Z0+X1*(A21*A32-A31*A22)-Y1*(A11*A32-A31*A12)+Z1*(A11*A22-A12*A21); Among them, X0, Y0 and Z0 are the coordinate values ​​of the installation point of the tightening tool model in the sleeve model coordinate system, X1, Y1, Z1 are the coordinate values ​​of the installation point of the sleeve model, and X, Y, Z are the absolute coordinate information of the installation point of the tightening tool model; Then, the coordinate information of the tightening tool model is automatically adjusted to the absolute coordinate information of the installation point of the tightening tool model calculated above, so that the tightening tool model is automatically positioned on the sleeve model; If the answer is no, that is, the information of the sleeve is not needed, the tightening tool model stored in the TC system is automatically retrieved according to the tool ID information, the tightening tool model is automatically placed in the structural level where the standard part is located, and the coordinate information of the tightening tool model is adjusted to the absolute coordinate information of the standard part, so that the tightening tool model is automatically positioned on the standard part.

2. The automatic positioning method for tightening tools based on the TC system according to claim 1 is characterized in that: The standard parts information includes the torque, absolute coordinates, thread specifications and importance level information of the standard parts.

3. The automatic positioning method for tightening tools based on the TC system according to claim 1 or 2, characterized in that: The operations of traversing the selected vehicle structure object and obtaining standard parts information in the TC system include: When the selected vehicle structure object is an EBOM structure, determine whether it is a BOMLine object. If it is a BOMLine object, traverse all levels under the BOMLine object. If the object type is found to be a standard part, do not continue to traverse the next level. Read the torque table under the BOMLine object in the specification relationship according to the found standard parts to obtain the torque, thread specifications and importance level of the standard parts; Get the absolute coordinate information of the standard part through the absolute transformation matrix attribute.

4. The automatic positioning method for tightening tools based on the TC system according to claim 1 or 2, characterized in that: The operations of traversing the selected vehicle structure object and obtaining standard parts information in the TC system include: When the selected vehicle structure object is a DBOM structure, determine whether it is a BOMLine object. If it is a BOMLine object, traverse all levels under the BOMLine object. If the object type is found to be a standard part, do not continue to traverse the next level. According to the found standard parts, the torque, thread specification and importance level of the standard parts recorded in the BOMLine attributes are obtained; Get the absolute coordinate information of the standard part through the absolute transformation matrix attribute.

5. The automatic positioning method for tightening tools based on the TC system according to claim 1 or 2, characterized in that: The operations of traversing the selected vehicle structure object and obtaining standard parts information in the TC system include: When the selected vehicle structure object is a BOP structure, determine whether it is a BOMLine object. If it is a BOMLine object, traverse all levels under the BOMLine object to determine whether all BOMViewRevision objects of Operation type have write permission. If they have write permission, obtain all objects under Operation with MEConsumed relationship through traversal. If the object type is found to be a standard part, do not continue to traverse the next level. Obtain torque, thread specifications and importance levels based on standard parts; Get the absolute coordinate information of the standard part through the absolute transformation matrix attribute.

6. The automatic positioning method for tightening tools based on the TC system according to claim 5, characterized in that: The operations to determine whether all BOMViewRevision objects of type Operation have write permissions include: When it is determined that the BOMViewRevision of the object type Operation does not have the write permission, the Operation object information without the permission is recorded, and a prompt is given as to whether to continue to determine whether the next BOMViewRevision of the object type Operation has the write permission. If all BOMViewRevisions of the object type Operation do not have the write permission, the Operation object information without the permission is recorded, and an error prompt is given.

Images