CN114313070B - Power assembly assembling and checking method, system, storage medium and equipment - Google Patents
Power assembly assembling and checking method, system, storage medium and equipment Download PDFInfo
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- CN114313070B CN114313070B CN202111396669.3A CN202111396669A CN114313070B CN 114313070 B CN114313070 B CN 114313070B CN 202111396669 A CN202111396669 A CN 202111396669A CN 114313070 B CN114313070 B CN 114313070B
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Abstract
The invention discloses a power assembly assembling and checking method, a system, a storage medium and equipment, wherein the method comprises the following steps: acquiring three-dimensional data of a cabin of a vehicle to be assembled, and generating a cabin assembly body corresponding to the cabin; acquiring three-dimensional data of a power assembly of a vehicle to be assembled, generating a power assembly corresponding to the power assembly, and placing the power assembly at an initial position outside a cabin assembly; simulating an assembling process of the power assembly body from an initial position to a preset position in the cabin assembly body according to the hoisting angle; and acquiring an assembly gap between any part of the power assembly body and the cabin assembly body in the simulated assembly process, and judging whether the assembly gap meets the assembly requirement. The invention can solve the technical problem that in the prior art, the power assembly cannot fall in the production and assembly process of a new vehicle model, so that one or more parts are required to be redesigned to eliminate the problem that the power assembly cannot fall.
Description
Technical Field
The invention relates to the technical field of automobile assembly, in particular to a power assembly checking method, a system, a storage medium and equipment.
Background
At present, most trucks (light trucks and medium trucks) generally adopt a longitudinal power assembly, the longitudinal power assembly is hoisted to a chassis in the production process, and the hoisting method is basically consistent, namely when the power assembly is transmitted to a corresponding procedure, a lifting device automatically hoists the power assembly by a previous upward elevation angle, and an operator can only control the power assembly to slowly fall into a chassis cabin in the Z direction and the X direction.
However, when a new vehicle type is put into production on line in a small batch, interference between the power assembly and peripheral components during the falling process often occurs, so that the power assembly cannot be assembled to a preset position in the cabin in a falling manner, and one or more parts need to be redesigned to eliminate the problem that the power assembly cannot fall down, which directly affects the development and marketing of the new vehicle type.
Disclosure of Invention
Based on the above, the invention aims to provide a power assembly assembling and checking method, a system, a storage medium and equipment, which aim to solve the technical problem that in the prior art, in the process of production and assembly of a new vehicle type, the power assembly cannot fall, so that one or more parts need to be redesigned to eliminate the problem that the power assembly cannot fall.
A first aspect of the present invention provides a powertrain assembly checking method, the method comprising:
acquiring historical assembly data of assembling a power assembly of a historical vehicle type on a general assembly line, wherein the historical assembly data at least comprises a hoisting angle before the power assembly is hoisted to a chassis, and the hoisting angle is an elevation angle of a power line of the power assembly and an XY plane;
acquiring three-dimensional data of a cabin of a vehicle to be assembled, and generating a cabin assembly body corresponding to the cabin according to the three-dimensional data of the cabin;
acquiring three-dimensional data of a power assembly of a vehicle to be assembled, generating a power assembly corresponding to the power assembly according to the three-dimensional data of the power assembly, and placing the power assembly at an initial position outside the engine room assembly in a preset program;
simulating an assembling process of the power assembly body from an initial position to a preset position in the cabin assembly body according to the hoisting angle;
acquiring an assembly gap between any part of the power assembly body and the cabin assembly body in the simulated assembly process, and judging whether the assembly gap meets the assembly requirement or not;
if so, it is determined that the powertrain is properly assembled within the nacelle.
According to an aspect of the above technical solution, according to the hoisting angle, the step of simulating an assembling process of the powertrain assembly body from an initial position to a preset position in the cabin assembly body specifically includes:
generating a track line for assembling the power assembly body into the cabin assembly body according to the hoisting angle;
simulating assembly of the powertrain assembly from an initial position to a preset position within the nacelle assembly along the trajectory.
According to an aspect of the foregoing disclosure, the step of simulating, along the trajectory line, the assembly of the powertrain assembly from an initial position to a preset position within the nacelle assembly specifically includes:
controlling the powertrain assembly to descend along the Z axis from an initial position and move towards the interior of the cabin assembly along the X axis until a gearbox suspension fastener of the powertrain assembly corresponds to a connecting hole of a first frame cross beam;
and controlling the power assembly to rotate downwards along the Y axis until the engine suspension of the power assembly is attached to the top surface of the second frame cross beam.
According to an aspect of the foregoing aspect, before the step of simulating an assembly process of the powertrain assembly from an initial position to a preset position within the nacelle assembly, the method further includes:
determining a first boundary frame of the power assembly according to the three-dimensional data of the power assembly, and setting a first color corresponding to the first boundary frame;
and determining a second boundary frame of the cabin assembly body according to the three-dimensional data of the cabin assembly body, and setting a second color corresponding to the second boundary frame, wherein the first color and the second color have visual differences.
According to an aspect of the above technical solution, the step of obtaining an assembly gap between any part of the power assembly body and the nacelle assembly body in the simulated assembly process specifically includes:
judging whether two ends of the first boundary frame are intersected with two ends of the second boundary frame and forming a third color in the process of controlling the power assembly to move along the Z axis and the X axis;
and in the process of controlling the power assembly to rotate downwards along the Y axis, judging whether the two sides of the first boundary frame are intersected with the two sides of the second boundary frame or not and forming a third color.
According to an aspect of the foregoing technical solution, the method further includes:
labeling the interference range forming the third color to acquire interference information of the power assembly and the cabin assembly;
based on the interference information, a first interference range in the interference range is acquired, which relates to the powertrain assembly, and a second interference range in the interference range is acquired, which relates to the nacelle assembly.
According to an aspect of the foregoing technical solution, the method further includes:
simulating and removing a first interference range of the power assembly, calculating a first structural characteristic of the power assembly, and judging whether the power assembly is damaged after the first interference range is removed according to the first structural characteristic of the power assembly;
and simulating and removing a second interference range of the cabin assembly body, calculating a second structural characteristic of the cabin, and judging whether the function of the cabin is damaged after the second interference range is removed according to the second structural characteristic of the cabin.
A second aspect of the present invention is to provide a powertrain assembly verification system, the system comprising:
the system comprises a first data acquisition module, a second data acquisition module and a control module, wherein the first data acquisition module is used for acquiring historical assembly data of assembly of a power assembly of a historical vehicle type on a general assembly line, the historical assembly data at least comprises a hoisting angle before the power assembly is hoisted to a chassis, and the hoisting angle is an elevation angle between a power line of the power assembly and an XY plane;
the second data acquisition module is used for acquiring three-dimensional data of a cabin of a vehicle to be assembled and generating a cabin assembly body corresponding to the cabin according to the three-dimensional data of the cabin;
the third data acquisition module is used for acquiring three-dimensional data of a power assembly of a vehicle to be assembled, generating a power assembly corresponding to the power assembly according to the three-dimensional data of the power assembly, and placing the power assembly at an initial position outside the engine room assembly in a preset program;
the simulation assembly module is used for simulating the assembly process from the initial position to the preset position in the cabin assembly body according to the hoisting angle;
the assembly judging module is used for acquiring an assembly gap between any part of the power assembly body and the cabin assembly body in the simulation assembly process and judging whether the assembly gap meets the assembly requirement or not;
and the result output module is used for judging that the power assembly can be correctly assembled into the cabin when the assembly gap meets the assembly requirement.
A third aspect of the present invention provides a computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method described in the above-mentioned claims.
A third aspect of the present invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method described in the above technical solution when executing the program.
Compared with the prior art, the power assembly assembling and checking method, system, storage medium and equipment in the embodiment have the beneficial effects that: by generating a power assembly body of the power assembly and a cabin assembly body of the cabin, assembling the power assembly body from an initial position to a preset position in the cabin assembly body according to historical assembly data, acquiring an assembly gap between the power assembly body and any position of the cabin assembly body in a simulation assembly process, judging whether the assembly gap meets assembly requirements, and only when the assembly gap meets the assembly requirements, indicating that the power assembly body can be assembled in the cabin assembly body, namely, indicating that the power assembly of a vehicle to be assembled can be correctly assembled in the cabin. In the embodiment, the assembly of the power assembly is checked through the simulation assembly, and whether the power assembly and/or the engine room need to be modified or not is judged according to the check result, so that assembly failure is avoided in the later mass production of new vehicle types.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a flow chart of a powertrain assembly verification method in a first embodiment of the present invention;
FIG. 2 is a block diagram of a powertrain assembly verification system in a third embodiment of the present invention;
the following detailed description will further illustrate the invention with reference to the above-described drawings.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1
Referring to fig. 1, a first embodiment of the present invention provides a powertrain assembly checking method, which includes steps S10-S60:
step S10, historical assembly data of assembly of a power assembly of a historical vehicle type on a general assembly line is obtained, wherein the historical assembly data at least comprises a hoisting angle before the power assembly is hoisted to a chassis;
it should be noted that, the historical assembly data of the power assembly of the historical motorcycle type assembled on the assembly line is the assembly data of the power assembly of the existing vehicle in the assembly link, wherein the assembly data comprises a hoisting angle before the power assembly is hoisted to the chassis, the hoisting angle is the elevation angle of a power line (namely an extension line of a power output shaft) of the power assembly and an XY plane, and the power assembly is assembled in the engine room of the automobile by adopting the hoisting angle, so that the assembly interference can be effectively avoided, and the assembly efficiency is improved. The hoisting angles are defined by the general assembly line, and the hoisting angles preset by each manufacturer have certain differences for the correct angles, but the differences are not too large.
Step S20, acquiring three-dimensional data of a cabin of a vehicle to be assembled, and generating a cabin assembly body corresponding to the cabin according to the three-dimensional data of the cabin;
for example, the cabin of the vehicle to be assembled, namely, the new vehicle type small-batch trial production vehicle is scanned by an optical scanning device, so that three-dimensional data of the cabin of the vehicle to be assembled are acquired, and a cabin assembly corresponding to the cabin is generated according to the three-dimensional data of the cabin.
The three-dimensional data of the engine room comprises contour data and size data of all assembly parts in the engine room, and an engine room assembly body corresponding to the engine room is generated according to the contour data and the size data of all assembly parts in the engine room. The cabin is internally provided with parts such as a water tank frame, a fan, a frame cross member and other assembly parts.
Step S30, three-dimensional data of a power assembly of a vehicle to be assembled is obtained, a power assembly corresponding to the power assembly is generated according to the three-dimensional data of the power assembly, and the power assembly is placed at an initial position outside the cabin assembly in a preset program;
and the optical scanning equipment is used for scanning the power assembly of the vehicle to be assembled, namely the new vehicle type small batch trial production vehicle, so that the three-dimensional data of the power assembly of the vehicle to be assembled is obtained, and the cabin assembly corresponding to the power assembly is generated according to the three-dimensional data of the power assembly.
Wherein the powertrain includes an engine, a gearbox, components connecting the two, and a suspension of the two.
After the cabin assembly and the power assembly are obtained, before the simulation assembly, the power assembly is guided into an operation interface of the cabin assembly, and the power assembly is dragged to a position above the cabin assembly according to a preset hoisting angle, and the simulation assembly is waited for the power assembly and the cabin assembly, then the method proceeds to step S40.
Step S40, simulating an assembling process of the power assembly body from an initial position to a preset position in the cabin assembly body according to the hoisting angle;
based on the outlines of the power assembly and the engine room, a hoisting angle before the power assembly is hoisted to the chassis is preset, and according to the hoisting angle, the assembly overload of the power assembly body from the initial position to the preset position in the engine room assembly body is simulated.
During assembly of the powertrain assembly, including lowering and translating the powertrain assembly, and rotating the powertrain assembly, the powertrain assembly is assembled to a predetermined location within the nacelle assembly.
S50, acquiring an assembly gap between any part of the power assembly body and the cabin assembly body in the simulated assembly process, and judging whether the assembly gap meets the assembly requirement;
as will be readily appreciated by those skilled in the art, in the powertrain of the present-stage automobile, the engine is provided with at least three cylinders, four cylinders, and the requirements for power and torque are greater for large vehicles such as trucks, so that the trucks are usually six-cylinder models, which results in huge engine sizes of the trucks. The power assembly is longitudinally arranged, the input shaft of the gearbox is in transmission connection with the output shaft of the engine, the gearbox extends along the axis of the output shaft of the engine, and the more gears of the gearbox are, the volume of the gearbox is correspondingly increased. Thus, the length of the drive train in longitudinal direction is relatively long, and the required cabin longitudinal space is large and also more difficult to assemble.
After the power assembly is assembled, the engine is completely positioned in the cabin, only part of the gearbox is positioned in the cabin, and the rest part of the gearbox is connected with the transmission shaft of the rear wheel by extending into the chassis, namely, when the power assembly is assembled, the end of the gearbox is extended into the cabin and further extended into the chassis, and then the end of the engine is installed in the cabin.
By way of example and not limitation, when the gearbox passes through the nacelle and extends into the chassis, the engine is empirically known to be susceptible to contact with the water box frame at the front of the nacelle due to its large volume, resulting in a failure of the powertrain to properly fit within the nacelle. Therefore, in the simulated assembly of the power assembly body and the cabin assembly body, an assembly gap between the engine model of the power assembly body and the water tank frame model of the cabin assembly body should be obtained, so that whether the engine model of the power assembly body and the water tank frame model of the cabin assembly body interfere with each other or not and the probability that the engine model and the water tank frame model interfere with each other in the next step when the power assembly body is assembled along the track are judged.
In the simulation assembly process, only if any part of the power assembly body cannot interfere with any part of the cabin assembly body, the power assembly body can be correctly assembled into the cabin assembly body, and only then the assembly requirement is met. When the assembly gap meets the assembly requirement, the method proceeds to step S60.
Step S60, determining that the powertrain is able to fit correctly into the nacelle.
In the simulation assembly process, when the power assembly can be correctly assembled into the cabin assembly, the power assembly can be correctly assembled into the cabin, namely, the power assembly and the cabin are designed without modification, and the mass production can be realized.
In contrast, in the simulation assembly process, when the power assembly body cannot be assembled into the cabin assembly body correctly, the power assembly cannot be assembled into the cabin correctly, that is, the design of the power assembly and/or the cabin needs to be modified, and the vehicle type can be produced in batches only after the modification is performed through the simulation assembly.
Compared with the prior art, the power assembly assembling and checking method has the beneficial effects that: by generating a power assembly body of the power assembly and a cabin assembly body of the cabin, assembling the power assembly body from an initial position to a preset position in the cabin assembly body according to historical assembly data, acquiring an assembly gap between the power assembly body and any position of the cabin assembly body in a simulation assembly process, judging whether the assembly gap meets assembly requirements, and only when the assembly gap meets the assembly requirements, indicating that the power assembly body can be assembled in the cabin assembly body, namely, indicating that the power assembly of a vehicle to be assembled can be correctly assembled in the cabin. In the embodiment, the assembly of the power assembly is checked through the simulation assembly, and whether the power assembly and/or the engine room need to be modified or not is judged according to the check result, so that assembly failure is avoided in the later mass production of new vehicle types.
Example two
The second embodiment of the present invention provides a power assembly assembling and checking method, in which:
according to the hoisting angle, simulating an assembling process of the power assembly body from an initial position to a preset position in the cabin assembly body, specifically comprising the following steps:
generating a track line for assembling the power assembly body into the cabin assembly body according to the hoisting angle;
simulating assembly of the powertrain assembly from an initial position to a preset position within the nacelle assembly along the trajectory.
In this embodiment, the step of simulating the assembly of the powertrain assembly from the initial position to the predetermined position within the nacelle assembly along the trajectory line specifically includes:
controlling the powertrain assembly to descend along the Z axis from an initial position and move towards the interior of the cabin assembly along the X axis until a gearbox suspension fastener of the powertrain assembly corresponds to a connecting hole of a first frame cross beam;
and controlling the power assembly to rotate downwards along the Y axis until the engine suspension of the power assembly is attached to the top surface of the second frame cross beam.
In this embodiment, before the step of simulating the assembly process of the powertrain assembly from the initial position to the predetermined position within the nacelle assembly, the method further includes:
determining a first boundary frame of the power assembly according to the three-dimensional data of the power assembly, and setting a first color corresponding to the first boundary frame;
and determining a second boundary frame of the cabin assembly body according to the three-dimensional data of the cabin assembly body, and setting a second color corresponding to the second boundary frame, wherein the first color and the second color have visual differences.
The step of obtaining the assembly gap between any part of the power assembly body and the cabin assembly body in the simulated assembly process specifically comprises the following steps:
judging whether two ends of the first boundary frame are intersected with two ends of the second boundary frame and forming a third color in the process of controlling the power assembly to move along the Z axis and the X axis;
and in the process of controlling the power assembly to rotate downwards along the Y axis, judging whether the two sides of the first boundary frame are intersected with the two sides of the second boundary frame or not and forming a third color.
Further, when the powertrain assembly and the nacelle assembly have a third color during the simulated assembly, the method further includes the steps of:
labeling the interference range forming the third color to acquire interference information of the power assembly and the cabin assembly;
based on the interference information, a first interference range in the interference range is acquired, which relates to the powertrain assembly, and a second interference range in the interference range is acquired, which relates to the nacelle assembly.
Further, a first interference range of the power assembly body is simulated and removed, first structural characteristics of the power assembly are calculated, and whether the function of the power assembly is damaged after the first interference range is removed is judged according to the first structural characteristics of the power assembly;
and simulating and removing a second interference range of the cabin assembly body, calculating a second structural characteristic of the cabin, and judging whether the function of the cabin is damaged after the second interference range is removed according to the second structural characteristic of the cabin.
By way of example and not limitation, after the second interference range of the nacelle assembly is simulated to be removed, the structural characteristics of the nacelle are recalculated to obtain second structural characteristics of the nacelle, and whether the nacelle is damaged after the second interference range is removed is determined according to the second structural characteristics. For example, the boundary beam of the water tank frame in the cabin is partially removed, so that the boundary beam of the water tank frame is thinner, whether the thinned boundary beam affects the normal use and the service life of the water tank frame is judged, and when the thinned boundary beam is judged not to affect the normal use of the water tank frame, the boundary beam of the water tank frame can be reduced by a part in actual application, so that the power assembly is conveniently assembled in the cabin.
In this embodiment, in the process of simulating and assembling the power assembly body, by calculating the first interference range of the power assembly body and the second interference range of the cabin assembly body, whether the use is affected after the interference range is removed is judged, and a basis is provided for the arrangement of the power assembly body and the cabin, so that the development progress of a new vehicle model is facilitated to be accelerated.
Compared with the prior art, the power assembly assembling and checking method has the beneficial effects that: by generating a power assembly body of the power assembly and a cabin assembly body of the cabin, assembling the power assembly body from an initial position to a preset position in the cabin assembly body according to historical assembly data, acquiring an assembly gap between the power assembly body and any position of the cabin assembly body in a simulation assembly process, judging whether the assembly gap meets assembly requirements, and only when the assembly gap meets the assembly requirements, indicating that the power assembly body can be assembled in the cabin assembly body, namely, indicating that the power assembly of a vehicle to be assembled can be correctly assembled in the cabin. In the embodiment, the assembly of the power assembly is checked through the simulation assembly, and whether the power assembly and/or the engine room need to be modified or not is judged according to the check result, so that assembly failure is avoided in the later mass production of new vehicle types.
Example III
Referring to fig. 2, a third embodiment of the present invention provides a powertrain assembly verification system, the system comprising:
the first acquisition module 10 is used for acquiring historical assembly data of assembly of the power assembly of the historical vehicle type on the assembly line, wherein the historical assembly data at least comprises a hoisting angle before the power assembly is hoisted to the chassis;
it should be noted that, the historical assembly data of the power assembly of the historical motorcycle type assembled on the assembly line is the assembly data of the power assembly of the existing vehicle in the assembly link, wherein the assembly data comprises a hoisting angle before the power assembly is hoisted to the chassis, the hoisting angle is the elevation angle of a power line (namely an extension line of a power output shaft) of the power assembly and an XY plane, and the power assembly is assembled in the engine room of the automobile by adopting the hoisting angle, so that the assembly interference can be effectively avoided, and the assembly efficiency is improved. The hoisting angles are defined by the general assembly line, and the hoisting angles preset by each manufacturer have certain differences for the correct angles, but the differences are not too large.
A second acquisition module 20, configured to acquire three-dimensional data of a cabin of a vehicle to be assembled, and generate a cabin assembly body corresponding to the cabin according to the three-dimensional data of the cabin;
for example, the cabin of the vehicle to be assembled, namely, the new vehicle type small-batch trial production vehicle is scanned by an optical scanning device, so that three-dimensional data of the cabin of the vehicle to be assembled are acquired, and a cabin assembly corresponding to the cabin is generated according to the three-dimensional data of the cabin.
The three-dimensional data of the engine room comprises contour data and size data of all assembly parts in the engine room, and an engine room assembly body corresponding to the engine room is generated according to the contour data and the size data of all assembly parts in the engine room. The cabin is internally provided with parts such as a water tank frame, a fan, a frame cross member and other assembly parts.
A third obtaining module 30, configured to obtain three-dimensional data of a powertrain of a vehicle to be assembled, generate a powertrain assembly corresponding to the powertrain according to the three-dimensional data of the powertrain, and place the powertrain assembly at an initial position outside the cabin assembly in a preset program;
and the optical scanning equipment is used for scanning the power assembly of the vehicle to be assembled, namely the new vehicle type small batch trial production vehicle, so that the three-dimensional data of the power assembly of the vehicle to be assembled is obtained, and the cabin assembly corresponding to the power assembly is generated according to the three-dimensional data of the power assembly.
Wherein the powertrain includes an engine, a gearbox, components connecting the two, and a suspension of the two.
After the cabin assembly and the power assembly are obtained, before the simulation assembly, the power assembly is guided into an operation interface of the cabin assembly, and the power assembly is dragged to a position above the cabin assembly according to a preset hoisting angle, and the simulation assembly is waited for the power assembly and the cabin assembly, then the method proceeds to step S40.
A simulation assembly module 40, configured to simulate an assembly process of the powertrain assembly from an initial position to a preset position in the nacelle assembly according to the hoisting angle;
based on the outlines of the power assembly and the engine room, a hoisting angle before the power assembly is hoisted to the chassis is preset, and according to the hoisting angle, the assembly overload of the power assembly body from the initial position to the preset position in the engine room assembly body is simulated.
During assembly of the powertrain assembly, including lowering and translating the powertrain assembly, and rotating the powertrain assembly, the powertrain assembly is assembled to a predetermined location within the nacelle assembly.
The assembly judging module 50 is used for acquiring an assembly gap between any part of the power assembly body and the cabin assembly body in the simulated assembly process and judging whether the assembly gap meets the assembly requirement or not;
as will be readily appreciated by those skilled in the art, in the powertrain of the present-stage automobile, the engine is provided with at least three cylinders, four cylinders, and the power and torque requirements of large vehicles such as trucks are greater, so that the trucks are usually six-cylinder models, which results in a huge engine size of the truck. The power assembly is longitudinally arranged, an input shaft of the gearbox is in transmission connection with an output shaft of the engine, the gearbox extends along the axis of the output shaft of the engine, and the more gears of the gearbox are, the volume of the gearbox is correspondingly increased. Thus, the length of the drive train in longitudinal direction is relatively long, and the required cabin longitudinal space is large and also more difficult to assemble.
After the power assembly is assembled, the engine is completely positioned in the cabin, only part of the gearbox is positioned in the cabin, and the rest part of the gearbox is connected with the transmission shaft of the rear wheel by extending into the chassis, namely, when the power assembly is assembled, the end of the gearbox is extended into the cabin and further extended into the chassis, and then the end of the engine is installed in the cabin.
By way of example and not limitation, when the gearbox passes through the nacelle and extends into the chassis, the engine is empirically known to be susceptible to contact with the water box frame at the front of the nacelle due to its large volume, resulting in a failure of the powertrain to properly fit within the nacelle. Therefore, in the simulated assembly of the power assembly body and the cabin assembly body, an assembly gap between the engine model of the power assembly body and the water tank frame model of the cabin assembly body should be obtained, so that whether the engine model of the power assembly body and the water tank frame model of the cabin assembly body interfere with each other or not and the probability that the engine model and the water tank frame model interfere with each other in the next step when the power assembly body is assembled along the track are judged.
In the simulation assembly process, only if any part of the power assembly body cannot interfere with any part of the cabin assembly body, the power assembly body can be correctly assembled into the cabin assembly body, and only then the assembly requirement is met. When the assembly gap meets the assembly requirement, the method proceeds to step S60.
A result output module 60 for enabling correct fitting of the powertrain into the nacelle.
In the simulation assembly process, when the power assembly can be correctly assembled into the cabin assembly, the power assembly can be correctly assembled into the cabin, namely, the power assembly and the cabin are designed without modification, and the mass production can be realized.
In contrast, in the simulation assembly process, when the power assembly body cannot be assembled into the cabin assembly body correctly, the power assembly cannot be assembled into the cabin correctly, that is, the design of the power assembly and/or the cabin needs to be modified, and the vehicle type can be produced in batches only after the modification is performed through the simulation assembly.
Compared with the prior art, the power assembly assembling and checking system shown in the embodiment has the beneficial effects that: by generating a power assembly body of the power assembly and a cabin assembly body of the cabin, assembling the power assembly body from an initial position to a preset position in the cabin assembly body according to historical assembly data, acquiring an assembly gap between the power assembly body and any position of the cabin assembly body in a simulation assembly process, judging whether the assembly gap meets assembly requirements, and only when the assembly gap meets the assembly requirements, indicating that the power assembly body can be assembled in the cabin assembly body, namely, indicating that the power assembly of a vehicle to be assembled can be correctly assembled in the cabin. In the embodiment, the assembly of the power assembly is checked through the simulation assembly, and whether the power assembly and/or the engine room need to be modified or not is judged according to the check result, so that assembly failure is avoided in the later mass production of new vehicle types.
Example IV
A fourth embodiment of the invention provides a computer readable storage medium having stored thereon computer instructions which when executed by a processor implement the steps of the method described in the first or second embodiment.
Example five
A fifth embodiment of the invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method described in the first or second embodiment when the program is executed.
Those of skill in the art will appreciate that the logic and/or steps represented in the flow diagrams or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A powertrain assembly verification method, the method comprising:
acquiring historical assembly data of assembling a power assembly of a historical vehicle type on a general assembly line, wherein the historical assembly data at least comprises a hoisting angle before the power assembly is hoisted to a chassis, and the hoisting angle is an elevation angle of a power line of the power assembly and an XY plane;
acquiring three-dimensional data of a cabin of a vehicle to be assembled, and generating a cabin assembly body corresponding to the cabin according to the three-dimensional data of the cabin;
acquiring three-dimensional data of a power assembly of a vehicle to be assembled, generating a power assembly corresponding to the power assembly according to the three-dimensional data of the power assembly, and placing the power assembly at an initial position outside the engine room assembly in a preset program;
simulating an assembling process of the power assembly body from an initial position to a preset position in the cabin assembly body according to the hoisting angle;
acquiring an assembly gap between any part of the power assembly body and the cabin assembly body in the simulated assembly process, and judging whether the assembly gap meets the assembly requirement or not;
if yes, judging that the power assembly can be correctly assembled into the cabin;
wherein, judge whether the assembly clearance satisfies the assembly demand is:
in the simulation assembly process of the power assembly body, calculating a first interference range of the power assembly body and a second interference range of the engine room assembly body, and judging whether the use is influenced after the interference range is removed; comprising
Simulating and removing a first interference range of the power assembly, calculating a first structural characteristic of the power assembly, and judging whether the power assembly is damaged after the first interference range is removed according to the first structural characteristic of the power assembly; and/or
And simulating to remove a second interference range of the cabin assembly body, calculating second structural characteristics of the cabin, and judging whether the function of the cabin is damaged after the second interference range is removed according to the second structural characteristics of the cabin.
2. The powertrain assembly verification method according to claim 1, wherein the step of simulating an assembly process of the powertrain assembly body from an initial position to a preset position in the nacelle assembly body according to the hoisting angle, specifically comprises:
generating a track line for assembling the power assembly body into the cabin assembly body according to the hoisting angle;
simulating assembly of the powertrain assembly from an initial position to a preset position within the nacelle assembly along the trajectory.
3. The powertrain assembly verification method of claim 2, wherein simulating assembly of the powertrain assembly from an initial position to a predetermined position within the nacelle assembly along the trajectory line specifically comprises:
controlling the powertrain assembly to descend along the Z axis from an initial position and move towards the interior of the cabin assembly along the X axis until a gearbox suspension fastener of the powertrain assembly corresponds to a connecting hole of a first frame cross beam;
and controlling the power assembly to rotate downwards along the Y axis until the engine suspension of the power assembly is attached to the top surface of the second frame cross beam.
4. A powertrain assembly verification method according to any one of claims 1-3, wherein, prior to the step of simulating an assembly process of the powertrain assembly body from an initial position to a preset position within the nacelle assembly body, the method further comprises:
determining a first boundary frame of the power assembly according to the three-dimensional data of the power assembly, and setting a first color corresponding to the first boundary frame;
and determining a second boundary frame of the cabin assembly body according to the three-dimensional data of the cabin assembly body, and setting a second color corresponding to the second boundary frame, wherein the first color and the second color have visual differences.
5. The powertrain assembly verification method of claim 4, wherein the step of obtaining an assembly gap between any part of the powertrain assembly body during the simulated assembly process and the nacelle assembly body specifically comprises:
judging whether two ends of the first boundary frame are intersected with two ends of the second boundary frame and forming a third color in the process of controlling the power assembly to move along the Z axis and the X axis;
and in the process of controlling the power assembly to rotate downwards along the Y axis, judging whether the two sides of the first boundary frame are intersected with the two sides of the second boundary frame or not and forming a third color.
6. The powertrain assembly verification method of claim 5, further comprising:
labeling the interference range forming the third color to acquire interference information of the power assembly and the cabin assembly;
based on the interference information, a first interference range in the interference range is acquired, which relates to the powertrain assembly, and a second interference range in the interference range is acquired, which relates to the nacelle assembly.
7. A powertrain assembly verification system, the system comprising:
the system comprises a first data acquisition module, a second data acquisition module and a control module, wherein the first data acquisition module is used for acquiring historical assembly data of assembly of a power assembly of a historical vehicle type on a general assembly line, the historical assembly data at least comprises a hoisting angle before the power assembly is hoisted to a chassis, and the hoisting angle is an elevation angle between a power line of the power assembly and an XY plane;
the second data acquisition module is used for acquiring three-dimensional data of a cabin of a vehicle to be assembled and generating a cabin assembly body corresponding to the cabin according to the three-dimensional data of the cabin;
the third data acquisition module is used for acquiring three-dimensional data of a power assembly of a vehicle to be assembled, generating a power assembly corresponding to the power assembly according to the three-dimensional data of the power assembly, and placing the power assembly at an initial position outside the engine room assembly in a preset program;
the simulation assembly module is used for simulating the assembly process from the initial position to the preset position in the cabin assembly body according to the hoisting angle;
the assembly judging module is used for acquiring an assembly gap between any part of the power assembly body and the cabin assembly body in the simulation assembly process and judging whether the assembly gap meets the assembly requirement or not;
a result output module for determining that the powertrain is properly assembled into the nacelle when the assembly clearance meets an assembly requirement;
the assembly judging module is specifically configured to:
in the simulation assembly process of the power assembly body, calculating a first interference range of the power assembly body and a second interference range of the engine room assembly body, and judging whether the use is influenced after the interference range is removed; comprising
Simulating and removing a first interference range of the power assembly, calculating a first structural characteristic of the power assembly, and judging whether the power assembly is damaged after the first interference range is removed according to the first structural characteristic of the power assembly; and/or
And simulating to remove a second interference range of the cabin assembly body, calculating second structural characteristics of the cabin, and judging whether the function of the cabin is damaged after the second interference range is removed according to the second structural characteristics of the cabin.
8. A computer readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the steps of the method of any of claims 1-6.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any of claims 1-6 when the program is executed by the processor.
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