CN117807735A - Method, device, equipment and storage medium for determining thickness of adjusting gasket - Google Patents
Method, device, equipment and storage medium for determining thickness of adjusting gasket Download PDFInfo
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Abstract
The application relates to the technical field of bearing assembly, and provides a method, a device, equipment and a storage medium for determining thickness of an adjusting gasket, wherein the method comprises the following steps: acquiring axial rigidity relations of a plurality of parts in the target bearing assembly, wherein the axial rigidity relations comprise corresponding relations of axial force and axial deformation, and the parts are parts which influence the axial deformation of the bearing in the target bearing assembly; obtaining a target pretightening force required by a bearing; determining a plurality of target axial deformation amounts from the axial rigidity relation of the plurality of parts based on the target pretightening force; finally, a target thickness value for the tuning shim is determined based on the plurality of target axial deformations. In the process of determining the thickness of the adjusting gasket, the influence of the axial rigidity relation of each part in the bearing assembly on the thickness of the adjusting gasket is considered, so that the accuracy of adjusting the thickness of the gasket is improved, and the assembled bearing can meet the design requirement.
Description
Technical Field
The present disclosure relates to the field of bearing assembly technologies, and in particular, to a method, an apparatus, a device, and a storage medium for determining thickness of an adjustment pad.
Background
The automatic transmission bearing generally adopts the additionally-installed bearing axial adjustment gasket to ensure the axial pre-tightening of the bearing in the working process of the speed reducer, and the rotating precision of the bearing can be effectively improved by applying a certain axial pre-tightening force to the bearing, so that the rolling bodies are prevented from sliding, the working efficiency of the bearing is improved, the noise is effectively reduced, and the service life of the bearing is prolonged.
When the bearing is assembled, there are two general ways to apply the axial pre-tightening force to the bearing, namely, the axial pre-tightening force is directly applied, but in an assembly body applied in actual engineering, the pre-tightening force is not easy to control. Secondly, the axial pre-tightening amount is controlled to indirectly apply the pre-tightening force, and related design manuals can be searched for through selection of the pre-tightening force and the pre-tightening amount. For bearing pretension in automatic transmissions, the axial pretension is achieved by designing the pretension to be assembled. As shown in fig. 1, an adjusting gasket is placed between the contact surface of the right bearing and the right shell, and the pre-tightening amount between the gasket and the shell is adjusted by selecting adjusting gaskets with different thicknesses, so that the axial pre-tightening amount is applied to the bearing, and the axial pre-tightening force is generated, thereby meeting the axial pre-tightening requirement of the bearing.
In the related art, the thickness of the gasket is adjusted to X without considering the pre-tightening amount t The design preload X of the bearing is selected b Then, the thickness of the adjusting gasket to be selected is X t +X b . But the individual parts in the bearing assembly are deformed. As shown in fig. 1, after the bearing assembly is completed, the left shell body can generate left deformation at the bearing hole, the right shell body can generate right deformation at the bearing hole, the transmission shaft can generate axial compression deformation, the adjusting gaskets can also generate compression deformation, the deformation of each part enables the actual pre-tightening amount to be smaller than the design pre-tightening amount, the accuracy of selecting the thickness of the adjusting gaskets based on the design pre-tightening amount is low, and the design requirement cannot be met.
Disclosure of Invention
In order to solve the technical problem, the application provides a method, a device, equipment and a storage medium for determining the thickness of an adjusting gasket, which improve the accuracy of adjusting the thickness of the gasket and enable an assembled bearing to meet design requirements.
In a first aspect, an embodiment of the present application provides a method for determining a thickness of an adjustment pad, including: acquiring axial rigidity relations of a plurality of parts in the target bearing assembly, wherein the axial rigidity relations comprise corresponding relations of axial force and axial deformation, and the parts are parts which influence the axial deformation of the bearing in the target bearing assembly; obtaining a target pretightening force required by a bearing; determining a plurality of target axial deformation amounts from the axial rigidity relation of the plurality of parts based on the target pretightening force; a target thickness value of the tuning shim is determined based on the plurality of target axial deformations.
In a second aspect, an embodiment of the present application provides a determining device for adjusting a thickness of a spacer, including: the axial rigidity relation acquisition module is used for acquiring axial rigidity relation of a plurality of parts in the target bearing assembly, wherein the axial rigidity relation comprises a corresponding relation between axial force and axial deformation, and the parts are parts which influence the axial deformation of the bearing in the target bearing assembly; the target pretightening force acquisition module is used for acquiring the target pretightening force required by the bearing; the target axial deformation determining module is used for determining a plurality of target axial deformation from the axial rigidity relation of the parts based on the target pretightening force; the thickness determination module of the adjusting gasket determines a target thickness value of the adjusting gasket based on a plurality of target axial deformation amounts.
In a third aspect, an embodiment of the present application provides a determining apparatus for adjusting a thickness of a shim, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps of any one of the determining methods for adjusting a thickness of a shim in the first aspect when executing the computer program.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of determining any one of the first aspects for adjusting the thickness of a shim.
In a fifth aspect, embodiments of the present application provide a computer program product comprising a computer program or instructions which, when executed by a processor, implement the steps of a method of determining an adjustment of shim thickness as in any of the first aspects above.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the method, the device, the equipment and the storage medium for determining the thickness of the adjusting gasket provided by the embodiment of the application comprise the steps of firstly, acquiring axial rigidity relations of a plurality of parts in a target bearing assembly, wherein the axial rigidity relations comprise corresponding relations of axial force and axial deformation, and the parts are parts which influence the axial deformation of a bearing in the target bearing assembly; then, obtaining target pretightening force required by the bearing; thirdly, determining a plurality of target axial deformation amounts from the axial rigidity relation of the plurality of parts based on the target pretightening force; finally, a target thickness value for the tuning shim is determined based on the plurality of target axial deformations. In the process of determining the thickness of the adjusting gasket, the influence of the axial rigidity relation of each part in the bearing assembly on the thickness of the adjusting gasket is considered, so that the accuracy of adjusting the thickness of the gasket is improved, and the assembled bearing can meet the design requirement.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic view of an assembled bearing of an automatic transmission;
fig. 2 is an application scenario schematic diagram of a method for determining thickness of an adjustment pad according to an embodiment of the present application;
FIG. 3 is a flowchart of a method for determining a thickness of an adjustment shim according to an embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of a bearing according to an embodiment of the present disclosure;
FIG. 5 is a schematic cross-sectional view of a housing according to an embodiment of the present disclosure;
FIG. 6 is a schematic cross-sectional view of a rotating shaft according to an embodiment of the present disclosure;
FIG. 7 is a schematic illustration of axial stiffness curves for various parts provided by embodiments of the present application;
FIG. 8 is a flowchart of another method for determining thickness of an adjustment shim according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a determining device for adjusting thickness of a spacer according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a determining apparatus for adjusting thickness of a spacer according to an embodiment of the present application.
Detailed Description
In order that the above objects, features and advantages of the present application may be more clearly understood, a further description of the aspects of the present application will be provided below. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the application.
Fig. 1 is a schematic structural view of an assembled bearing of an automatic transmission, which, as shown in fig. 1, mainly includes: drive shaft, left bearing, right bearing, left housing, right housing, and other supports (not shown) in the assembled bearings. In the assembly bearing shown in fig. 1, an axial adjusting gasket is additionally arranged to ensure the axial pre-tightening of the bearing in the working process of the speed reducer, and the rotation precision of the bearing can be effectively improved by applying a certain axial pre-tightening force to the bearing, so that the sliding of rolling bodies is avoided, and the working efficiency of the bearing is improved.
As shown in fig. 1, an adjusting gasket is placed between the contact surface of the right bearing and the right shell, and the pre-tightening amount between the gasket and the shell is adjusted by selecting adjusting gaskets with different thicknesses, so that the axial pre-tightening amount is applied to the bearing, and the axial pre-tightening force is generated, thereby meeting the axial pre-tightening requirement of the bearing.
The thickness of the final tuning pad in the related art is generally the sum of the thickness of the tuning pad and the designed pre-load without considering the pre-load. However, after the assembly of the bearing assembly is completed, the left shell body can generate left deformation at the bearing hole, the right shell body can generate right deformation at the bearing hole, the transmission shaft can generate axial compression deformation, the adjusting gaskets can also generate compression deformation, the deformation of each part enables the actual pre-tightening amount to be smaller than the design pre-tightening amount, the thickness accuracy of the adjusting gaskets is low based on the design pre-tightening amount, and the design requirement cannot be met.
In order to solve at least one technical problem, the embodiments of the present application provide a method, an apparatus, a device, and a storage medium for determining a thickness of an adjustment gasket, first, an axial stiffness relationship of a plurality of parts in a target bearing assembly is obtained, where the axial stiffness relationship includes a correspondence between an axial force and an axial deformation, and the parts are parts in the target bearing assembly that affect the axial deformation of a bearing; then, obtaining target pretightening force required by the bearing; thirdly, determining a plurality of target axial deformation amounts from the axial rigidity relation of the plurality of parts based on the target pretightening force; finally, a thickness value of the tuning shim is determined based on the plurality of target axial deformations. In the process of determining the thickness of the adjusting gasket, the influence of the axial rigidity relation of each part in the bearing assembly on the thickness of the adjusting gasket is considered, so that the accuracy of adjusting the thickness of the gasket is improved, and the assembled bearing can meet the design requirement.
The method, the device, the equipment and the storage medium for determining the thickness of the adjusting gasket provided by the embodiment of the application are described in detail below with reference to the accompanying drawings.
Fig. 2 is an application scenario schematic diagram of a method for determining thickness of an adjustment pad according to an embodiment of the present application. It should be noted that fig. 2 is only an example of an application scenario where the embodiments of the present application may be applied, so as to help those skilled in the art understand the technical content of the present application, and does not mean that the embodiments of the present application may not be used in other devices, systems, environments, or scenarios.
As shown in fig. 2, the application scenario 100 of this embodiment may include a plurality of terminal devices 110, a network 120, a server 130, and a database 140. For example, the application scenario 100 may be adapted to implement the method for determining the thickness of the adjustment pad according to any of the embodiments of the present application.
The terminal device 110 may be various electronic devices including a display screen and installed with various client applications including, but not limited to, smartphones, tablet computers, portable computers, desktop computers, and the like.
According to an embodiment of the present application, the application scenario may further include a server that is communicatively connected to the terminal device 110 and is capable of responding to the terminal device 110, for example.
It is understood that the method for determining the thickness of the adjustment pad according to the embodiment of the present application may be performed by the terminal device 110 or by the server 130 communicatively connected to the terminal device 110. Accordingly, the device for determining the thickness of the adjustment pad in the embodiment of the present application may be disposed in the terminal device 110 or disposed in the server 130 communicatively connected to the terminal device 110.
Network 120 may be a single network or a combination of at least two different networks. For example, network 120 may include, but is not limited to, one or a combination of several of a local area network, a wide area network, a public network, a private network, and the like. The network 120 may be a computer network such as the Internet and/or various telecommunications networks (e.g., 3G/4G/5G mobile communication networks, WIFI, bluetooth, zigBee, etc.), as embodiments of the present application are not limited in this regard.
The server 130 may be a single server, or a group of servers, or a cloud server, with each server within the group of servers being connected via a wired or wireless network. A server farm may be centralized, such as a data center, or distributed. The server 130 may be local or remote. The server 130 may communicate with the terminal device 110 through a wired or wireless network. Embodiments of the present application are not limited to the hardware system and software system of server 130.
Database 140 may refer broadly to a device having a storage function. The database 140 is mainly used to store various data utilized, generated, and outputted by the terminal device 110 and the server 130 in operation. Database 140 may be local or remote. The database 140 may include various memories, such as a random access memory (random access memory, RAM), a Read Only Memory (ROM), and the like. The above-mentioned storage devices are just examples, and the storage devices that can be used in the application scenario 100 are not limited thereto. Embodiments of the present application are not limited to hardware systems and software systems of database 140, and may be, for example, a relational database or a non-relational database.
Database 140 may be interconnected or in communication with server 130 or a portion thereof via network 120, or directly with server 130, or a combination thereof.
In some examples, database 140 may be a stand-alone device. In other examples, database 140 may also be integrated in at least one of terminal device 110 and server 130. For example, the database 140 may be provided on the terminal device 110 or on the server 130. For another example, the database 140 may be distributed, with one portion being provided on the terminal device 110 and another portion being provided on the server 130.
Fig. 3 is a flowchart of a method for determining a thickness of an adjusting shim according to an embodiment of the present application, where the method may be performed by a device for determining a thickness of an adjusting shim, which may be implemented in software and/or hardware, and the method for determining a thickness of an adjusting shim may be performed by the terminal device 110 or the server 130 in fig. 2.
As shown in fig. 3, the method for determining the thickness of the adjustment pad according to the embodiment of the present application mainly includes steps S101 to S104.
S101, acquiring axial rigidity relations of a plurality of parts in the target bearing assembly, wherein the axial rigidity relations comprise corresponding relations of axial force and axial deformation, and the parts are parts which influence the axial deformation of the bearing in the target bearing assembly.
The target bearing assembly is one bearing assembly with the thickness of the spacer being required to be selected. The plurality of parts refers to parts included in the bearing assembly that have an effect on an axial deformation amount of the bearing, and may include at least one or more of the following, by way of example: drive shaft, left bearing, right bearing, left casing, right casing and other support in the assembly bearing.
The axial stiffness relationship may be understood as a correspondence between axial force and axial deflection. That is, the axial stiffness relationship can be understood that a deformation is applied to the axial direction of the part, and an axial force corresponding to the axial deformation is obtained at a corresponding position of the part. The axial rigidity relation can be represented by an axial rigidity curve, namely, can be represented by an axial force and axial deformation relation curve.
In the practical application process, finite element analysis can be performed on the parts in advance through a finite element analysis method, the axial rigidity relation corresponding to each part in the bearing assembly body is predetermined, and the axial rigidity relation corresponding to each part is pre-stored in a database of the terminal. When the thickness of the adjusting gasket in the target bearing assembly is determined, according to the parts in the target bearing assembly, inquiring is carried out in the pre-stored axial rigidity relation so as to obtain the corresponding axial rigidity relation of each part in the target bearing assembly.
If the axial rigidity relation corresponding to a certain part is not queried in the terminal, then analyzing the part by adopting a finite element analysis method to obtain the axial rigidity relation corresponding to the part.
Acquiring axial stiffness relationships of a plurality of parts in a target bearing assembly, comprising: the axial rigidity relation of a transmission shaft in the target bearing assembly is obtained, the axial rigidity relation of a left shell in the target bearing assembly is obtained, the axial rigidity relation of a right shell in the target bearing assembly is obtained, the axial rigidity relation of a left bearing in the target assembly bearing is obtained, and the axial rigidity relation of a right bearing in the target assembly bearing is obtained.
In one practical application scenario, since the axial stiffness relation of the left bearing is the same as that of the right bearing, only the axial stiffness relation of one of the bearings can be obtained. I.e. only the axial stiffness relation of the left bearing, or only the axial stiffness relation of the right bearing.
The flow of analysis of the individual parts by the finite element analysis method is described below.
First, a finite element analysis method of a bearing.
Establishing an initial finite element model of the bearing; applying a first constraint condition to an initial finite element model of the bearing to obtain a finite element model with constraint of the bearing; carrying out finite element analysis on the finite element model with constraint of the bearing to obtain the axial rigidity relation of the bearing; the first constraint includes one or more of the following: frictional contact between the rollers and the upper and lower surfaces of the raceway; friction contact between the large end spherical surface of the roller and the inner ring flange; limiting radial deformation of an inner hole of an inner ring of the bearing; limiting the axial displacement of the left end face of the inner ring of the bearing; and applying a plurality of axial displacement loads to the right end face of the outer ring of the bearing.
In the present embodiment, a tapered roller bearing is described as an example. Fig. 4 is a schematic cross-sectional structure of a bearing according to an embodiment of the present application, and as shown in fig. 4, the bearing includes an inner ring, an outer ring, and a plurality of rollers disposed between the inner ring and the outer ring.
Establishing the initial finite element model of the bearing may include: in finite element analysis software, an initial finite element model of the bearing is set through material parameters, inner ring parameters, outer ring parameters and roller parameters. The inner circle parameters may include: radius of the inner ring, width of the inner ring, thickness of the inner ring, etc. The outer ring parameters may include: the radius of the outer ring, the width of the outer ring, the thickness of the outer ring, etc. The roller parameters may include the height of the rollers, the diameter of the large end faces, the diameter of the small end faces, the number of rollers, etc.
A first constraint is imposed on an initial finite element model of a bearing in finite element analysis software, wherein the first constraint includes a friction constraint and a boundary constraint. Friction constraints include: the roller is in friction contact with the upper surface and the lower surface of the roller path, and the large end spherical surface of the roller is in friction contact with the inner ring flange. The boundary constraint conditions include: friction contact between the large end spherical surface of the roller and the inner ring flange; limiting radial deformation of an inner hole of an inner ring of the bearing; limiting the axial displacement of the left end face of the inner ring of the bearing; and applying a plurality of axial displacement loads to the right end face of the outer ring of the bearing.
In particular, since sliding friction exists between the mutual motion of the roller and the raceway in the axial direction in practical application of the bearing, frictional contact is required between the roller and the upper and lower surfaces of the raceway. An oil film is formed between the large end spherical surface of the roller and the inner ring flange when the bearing rotates, but an oil-free film is formed between the large end spherical surface of the roller and the inner ring flange when the bearing assembly is assembled, so that friction contact is required to be arranged between the large end spherical surface of the roller and the inner ring flange.
Since the bearing outer ring and the bearing hole are generally in clearance or excessive fit, radial deformation of the bearing outer ring and the bearing hole is not restrained, but the bearing inner ring and the bearing hole are in interference fit during assembly, so that the radial deformation of the bearing inner ring and the bearing hole needs to be restrained. Limiting the axial displacement of the left end face of the inner ring. And applying displacement load to the right end face of the outer ring in a plurality of load steps respectively, and compressing the outer ring leftwards. And after the constraint conditions are applied to the initial finite element model of the bearing, obtaining the finite element model with the constraint of the bearing.
And carrying out finite element analysis on the finite element model with the constraint of the bearing to obtain the axial counterforce of the left end face of the inner ring under different displacement loads. The displacement load is the axial deformation, and the axial counterforce of the left end face of the inner ring is the axial force of the bearing. The axial deformation is also referred to as a pretension, and the axial force is also referred to as a pretension.
In a bearing assembly, typically comprising 2 bearings, each of the 2 bearings may be analyzed by the finite element analysis method described above to obtain their respective axial stiffness relationships. Since in practical application the axial stiffness relationship of the 2 bearings is substantially uniform, it differs in that it is negligible. Therefore, in practical application, only one of the bearings can be subjected to finite element analysis, so that the corresponding axial rigidity relation of the bearings is obtained. When the axial rigidity relation of the bearing is used for selecting the adjusting gasket, the left bearing and the right bearing both use the axial rigidity relation.
Second, finite element analysis method of shell.
Establishing an initial finite element model of the shell; applying a second constraint condition to the initial finite element model of the shell to obtain a finite element model with constraint of the shell; finite element analysis is carried out on the finite element model with the constraint of the shell, and the axial rigidity relation of the shell is obtained; the second constraint includes one or more of: fixing the connecting surface of the shell, and applying a plurality of axial displacement loads to the bearing holes; when the shell is a left shell, the direction of the axial displacement load is leftwards; when the housing is a right housing, the direction of the axial displacement load is rightward.
In this embodiment, taking the bearing assembly shown in fig. 1 as an example, static structural analysis is performed on the left housing and the right housing respectively.
First, a method of performing finite element analysis on the left case will be described. Establishing the initial finite element model of the left shell may include: in the finite element analysis software, an initial finite element model of the left shell is set by material parameters of the left shell, the sizes of the respective positions, and the like. A second constraint is imposed on the initial finite element model of the left shell.
Specifically, the left shell connecting surface is fixed, and axial displacement loads are applied to the bearing holes in a plurality of load steps respectively, wherein the direction is leftwards. As shown in fig. 5, finite element analysis is performed on the constrained finite element model of the left housing to obtain axial reaction forces of the left housing connection surface under different displacement loads. The displacement load is the axial deformation, and the axial counterforce of the left end face of the inner ring is the axial force of the bearing. The axial deformation is also referred to as a pretension, and the axial force is also referred to as a pretension.
Next, a method of performing finite element analysis on the right shell will be described. The establishing of the initial finite element model of the right shell may include: in the finite element analysis software, an initial finite element model of the right shell is set by material parameters of the right shell, the sizes of the respective positions, and the like. A second constraint is imposed on the initial finite element model of the right shell.
Specifically, the right shell connecting surface is fixed, and axial displacement loads are applied to the bearing holes in a plurality of load steps respectively, wherein the direction is rightward. As shown in fig. 5, finite element analysis is performed on the constrained finite element model of the right housing to obtain the axial reaction force of the right housing connection surface under different displacement loads. The displacement load is the axial deformation, and the axial counterforce of the right end face of the inner ring is the axial force of the bearing. The axial deformation is also referred to as a pretension, and the axial force is also referred to as a pretension.
Thirdly, a finite element analysis method of the transmission shaft.
Establishing an initial finite element model of the transmission shaft; applying a third constraint condition to the initial finite element model of the transmission shaft to obtain a constrained finite element model of the transmission shaft; finite element analysis is carried out on the constrained finite element model of the transmission shaft, and the axial rigidity relation of the transmission shaft is obtained; the third constraint includes one or more of the following: fixing a first step surface of a transmission shaft, and applying a plurality of axial displacement loads to a second step surface of the transmission shaft; the first step surface and the second step surface are arranged opposite to each other, and the direction of the axial displacement load applied to the second step surface faces the first step surface.
In this embodiment, taking the bearing assembly shown in fig. 1 as an example, static structural analysis is performed on the transmission shaft. Establishing the initial finite element model of the drive shaft may include: in the finite element analysis software, an initial finite element model of the drive shaft is set by material parameters of the drive shaft, the dimensions of the respective positions, and the like. A third constraint is imposed on the initial finite element model of the drive shaft.
Specifically, the left step surface of the transmission shaft is fixed, and axial displacement load is applied to the right step surface in a plurality of load steps respectively, wherein the direction is leftwards. As shown in fig. 6. Finite element analysis is carried out on the finite element model with the constraint of the transmission shaft, and the axial counterforce of the left step surface under different displacement loads is obtained. The displacement load is the axial deformation, and the axial counterforce of the right end face of the inner ring is the axial force of the bearing. The axial deformation is also referred to as a pretension, and the axial force is also referred to as a pretension.
The axial deformation of the adjusting gasket is small due to the small axial dimension of the adjusting gasket, so that the influence of the axial deformation of the adjusting gasket on the axial pre-tightening can be ignored.
In one possible implementation, the parts include a left housing, a right housing, a left bearing, a right bearing, and a drive shaft, and the axial stiffness relationship is illustrated by way of example with an axial stiffness curve. As shown in fig. 7, is a graph of the axial stiffness of each part. Mainly comprises the following steps: an axial stiffness curve of the left (right) bearing, an axial stiffness curve of the left shell, an axial stiffness curve of the right shell and an axial stiffness curve of the transmission shaft. The corresponding relation between the axial force (pretightening force) and the axial deformation (pretightening force) of the bearing comprises a first axial force and a first axial deformation; the corresponding relation between the axial force (pretightening force) and the axial deformation (pretightening force) of the left shell comprises a second axial force and a second axial deformation; the corresponding relation between the axial force (pretightening force) and the axial deformation (pretightening force) of the right shell comprises a third axial force and a third axial deformation; the correspondence between the axial force (pre-tightening force) and the axial deformation (pre-tightening amount) of the transmission shaft includes a fourth axial force and a fourth axial deformation.
S102, acquiring target pretightening force required by the bearing.
The target pre-tightening force refers to the pre-tightening force required by the bearing when the bearing assembly is designed.
In the embodiment of the application, 2 methods for obtaining target pretightening force required by a bearing are provided.
First, a design manual of a target bearing assembly is searched, and a target pretightening force F required by a bearing in the target bearing assembly is determined p 。
Second, obtain the required goal pre-tightening amount X of the bearing b The method comprises the steps of carrying out a first treatment on the surface of the Based on the target pre-tightening amount X b Inquiring in the axial rigidity relation of the bearing; taking the axial force corresponding to the axial deformation amount which is the same as the target pre-tightening amount as the target pre-tightening force F p 。
Specifically, a design manual of a target bearing assembly is searched for, and the target bearing is determinedTarget preload X required for bearing in assembly b Based on the target pre-tightening amount X b Inquiring in the corresponding relation between the first axial force and the first axial deformation; will be pre-tensioned with a target amount X b The first axial force corresponding to the same first axial deformation is used as the target pretightening force F p 。
In one possible implementation, a design manual for the target bearing assembly is looked up, and the target preload amount X required for the target bearing assembly is determined b Then, in the axial stiffness curve corresponding to the bearing in fig. 7, the target pre-tightening amount X is found b The same first axial deformation will be equal to the target preload X b The first axial force corresponding to the same first axial deformation is used as the target pretightening force F p 。
S103, determining a plurality of target axial deformation amounts from the axial rigidity relation of the parts based on the target pretightening force.
In step S102 determination of target pretension force F p And then, inquiring the target axial deformation corresponding to each part in the axial rigidity curves of the parts shown in fig. 7. Each part has its corresponding target amount of axial deformation.
As shown in fig. 7, based on the target pretightening force F p Searching for a target pretightening force F in an axial stiffness curve corresponding to the bearing p The same first axial force, and the first axial deformation corresponding to the first axial force is taken as a first target axial deformation X b 。
Based on target pretightening force F p Searching for a target pretightening force F in an axial stiffness curve corresponding to the left shell p The same second axial force will be equal to the target preload force F p The second axial deformation corresponding to the same second axial force is used as a second target axial deformation X CL 。
Based on target pretightening force F p Searching for a target pretightening force F in an axial stiffness curve corresponding to the right shell p The same third axial force will be equal to the target preload force F p The third axial deformation corresponding to the same third axial force is used as a third target axial deformation X CR 。
Based on target pretightening force F p Searching for a target pretightening force F in an axial stiffness curve corresponding to the transmission shaft p The same fourth axial force will be equal to the target preload force F p The fourth axial deformation corresponding to the same fourth axial force is used as a fourth target axial deformation X a 。
S104, determining a target thickness value of the adjusting gasket based on the plurality of target axial deformation amounts.
Specifically, calculating first sum values of a plurality of target axial deformation amounts; and taking the first sum value and a second sum value of the thickness values of the adjusting gaskets when interference is not considered as target thickness values of the adjusting gaskets.
In step S103, a first target axial deformation X is calculated b Second target axial deformation X CL Third target axial deformation X CR And a fourth target axial deformation X a . Calculating a first target axial deformation X b Second target axial deformation X CL Third target axial deformation X CR And a fourth target axial deformation X a The first sum value is compared with the thickness value X of the adjusting gasket without considering interference t As the thickness value of the adjustment pad.
Specifically, a target thickness value of the required adjustment shim is calculated by the formula (1).
X g =X t +2X b +X CL +X CR +X a 。（1）
Wherein X is g Indicating the target thickness value of the adjusting pad, X t Indicating the thickness value X of the adjusting pad without considering interference b Representing the corresponding target axial deformation of one of the bearings, 2X b Representing the sum value of the corresponding target axial deformation of the two bearings, X CL Represents the corresponding target axial deformation quantity of the left shell, X CR Represents the corresponding target axial deformation quantity of the right shell, X a And the fourth target axial deformation corresponding to the transmission shaft is represented.
The method is not limited to the case of the bearing assembly shown in fig. 1, and there may be a plurality of supporting members between the bearing assemblies, so long as the parts affecting the axial preload of the bearing are plotted one by one in the stiffness graph, and the final thickness of the adjusting shim is determined by applying the above method.
In the product research and development process, the axial rigidity curve of the universal part can be archived and conveniently applied to different bearing assemblies.
The method has high flexibility, if a certain part is to be replaced, the rigidity curve of the part is only needed to be added on the axial rigidity curve graph, and the rigidity calculation results of the parts are mutually independent, so that the accumulated error in the calculation process is avoided.
According to the method for determining the thickness of the adjusting gasket, firstly, the axial rigidity relation of a plurality of parts in a target bearing assembly body is obtained, wherein the axial rigidity relation comprises the corresponding relation between axial force and axial deformation, and the parts are parts which influence the axial deformation of a bearing in the target bearing assembly body; then, obtaining target pretightening force required by the bearing; thirdly, determining a plurality of target axial deformation amounts from the axial rigidity relation of the plurality of parts based on the target pretightening force; finally, a target thickness value for the tuning shim is determined based on the plurality of target axial deformations. In the process of determining the thickness of the adjusting gasket, the influence of the axial rigidity relation of each part in the bearing assembly on the thickness of the adjusting gasket is considered, so that the accuracy of adjusting the thickness of the gasket is improved, and the assembled bearing can meet the design requirement.
On the basis of the above embodiment, the method for determining the thickness of the adjusting pad according to the embodiment of the present application is further optimized, as shown in fig. 8, and the optimized method for determining the thickness of the adjusting pad mainly includes the following steps:
s201, establishing an initial finite element model of a bearing; applying a first constraint condition to an initial finite element model of the bearing to obtain a finite element model with constraint of the bearing; and carrying out finite element analysis on the finite element model with the constraint of the bearing to obtain the axial rigidity relation of the bearing.
Wherein the first constraint includes one or more of: frictional contact between the rollers and the upper and lower surfaces of the raceway; friction contact between the large end spherical surface of the roller and the inner ring flange; limiting radial deformation of an inner hole of an inner ring of the bearing; limiting the axial displacement of the left end face of the inner ring of the bearing; and applying a plurality of axial displacement loads to the right end face of the outer ring of the bearing.
Establishing the initial finite element model of the bearing may include: in finite element analysis software, an initial finite element model of the bearing is set through material parameters, inner ring parameters, outer ring parameters and roller parameters. A first constraint is imposed on an initial finite element model of the bearing in finite element analysis software. In particular, since sliding friction exists between the mutual motion of the roller and the raceway in the axial direction in practical application of the bearing, frictional contact is required between the roller and the upper and lower surfaces of the raceway. Because an oil film is formed between the large end spherical surface of the roller and the inner ring flange when the bearing rotates, but in the bearing assembly process, an oil-free film is formed between the large end spherical surface of the roller and the inner ring flange, and therefore friction contact is required to be arranged between the large end spherical surface of the roller and the inner ring flange. Since the bearing outer ring and the bearing hole are generally in clearance or excessive fit, radial deformation of the bearing outer ring and the bearing hole is not restrained, but the bearing inner ring and the bearing hole are in interference fit during assembly, so that the radial deformation of the bearing inner ring and the bearing hole needs to be restrained. Limiting the axial displacement of the left end face of the inner ring. And applying displacement load to the right end face of the outer ring in a plurality of load steps respectively, and compressing the outer ring leftwards. And after the constraint conditions are applied to the initial finite element model of the bearing, obtaining the finite element model with the constraint of the bearing. And carrying out finite element analysis on the finite element model with the constraint of the bearing to obtain the axial counterforce of the left end face of the inner ring under different displacement loads. The displacement load is the axial deformation, and the axial counterforce of the left end face of the inner ring is the axial force of the bearing. The axial deformation is also referred to as a pretension, and the axial force is also referred to as a pretension.
The analysis results obtained are plotted on a stiffness graph, here comprising a left bearing and a right bearing, both bearings being identical, as shown in fig. 7.
S202, establishing an initial finite element model of the shell; applying a second constraint condition to the initial finite element model of the shell to obtain a finite element model with constraint of the shell; and carrying out finite element analysis on the finite element model with the constraint of the shell to obtain the axial rigidity relation of the shell.
Wherein the second constraint includes one or more of: fixing the connecting surface of the shell, and applying a plurality of axial displacement loads to the bearing holes; when the shell is a left shell, the direction of the axial displacement load is leftwards; when the housing is a right housing, the direction of the axial displacement load is rightward.
In this embodiment, taking the bearing assembly shown in fig. 1 as an example, static structural analysis is performed on the left housing and the right housing respectively. In the finite element analysis software, an initial finite element model of the housing is set by material parameters of the housing, the size of each position, and the like. A second constraint is imposed on the initial finite element model of the shell. Specifically, the left shell connecting surface is fixed, axial displacement loads are applied to the bearing holes in a plurality of load steps respectively, and the directions of the left shell and the right shell are left and right. And carrying out finite element analysis on the finite element model with the constraint of the shell to obtain the axial counterforce of the shell connecting surface under different displacement loads. The analysis results obtained are plotted on a stiffness graph, here comprising a left and a right shell, as shown in fig. 7.
S203, establishing an initial finite element model of the transmission shaft; applying a third constraint condition to the initial finite element model of the transmission shaft to obtain a constrained finite element model of the transmission shaft; and carrying out finite element analysis on the constrained finite element model of the transmission shaft to obtain the axial rigidity relation of the transmission shaft.
Wherein the third constraint includes one or more of: fixing a first step surface of a transmission shaft, and applying a plurality of axial displacement loads to a second step surface of the transmission shaft; the first step surface and the second step surface are arranged opposite to each other, and the direction of the axial displacement load applied to the second step surface faces the first step surface.
In this embodiment, taking the bearing assembly shown in fig. 1 as an example, static structural analysis is performed on the transmission shaft. In the finite element analysis software, an initial finite element model of the drive shaft is set by material parameters of the drive shaft, the dimensions of the respective positions, and the like. A third constraint is imposed on the initial finite element model of the drive shaft. The left step surface of the transmission shaft is fixed, and axial displacement load is applied to the right step surface in a plurality of load steps respectively, wherein the direction is leftwards. Finite element analysis is carried out on the finite element model with the constraint of the transmission shaft, and the axial counterforce of the left step surface under different displacement loads is obtained. The analysis results obtained are plotted on a stiffness graph, as shown in fig. 7.
S204, obtaining target pretightening force required by the bearing.
S205, determining a plurality of target axial deformation amounts from the axial rigidity relation of the parts based on the target pretightening force.
The execution flow of S204 to S205 provided in the embodiment of the present application is the same as that of S102 to S103 in the above embodiment, and specifically reference may be made to the description in the above embodiment, which is not limited in detail.
S206, calculating first sum values of a plurality of target axial deformation amounts; and taking the first sum value and a second sum value of the thickness values of the adjusting gaskets when interference is not considered as target thickness values of the adjusting gaskets.
The axial stiffness curves of the housing, the bearing and the drive shaft obtained by the finite element analysis are drawn under the same coordinate system, as shown in fig. 7.
When the thickness of the gasket is designed and adjusted, a design manual is firstly searched for determining the target pre-tightening amount X required by the bearing b Then find the corresponding pre-tightening force F in the stiffness curve graph p And thereby determining the deformation X of the housing CL And X CR Deflection X of the rotation shaft a Finally, calculating the thickness value X of the required adjusting gasket g =X t +2X b +X CL +X CR +Xa。
When the thickness of the gasket is designed and adjusted, firstly, a design manual is searched for to determine the target pretightening force Fp required by the bearing, and then the corresponding pretightening quantity X is found from FIG. 5 a 、X b 、X CL 、X CR Finally, the thickness X of the required adjusting gasket is calculated g =X t +2X b +X CL +X CR +Xa。
Fig. 9 is a schematic structural view of a determining device for adjusting thickness of a spacer according to the present embodiment; the device is configured in the device for determining the thickness of the adjusting gasket, and the method for determining the thickness of the adjusting gasket can be realized. As shown in fig. 9, the determining device 90 for adjusting the thickness of the spacer according to the embodiment of the present application mainly includes: an axial stiffness relation acquisition module 91, a target pretightening force acquisition module 92, a target axial deformation determination module 93 and a thickness determination module 94 of the adjusting shim.
The axial rigidity relation acquiring module 91 is configured to acquire axial rigidity relations of a plurality of parts in the target bearing assembly, where the axial rigidity relations include a corresponding relation between an axial force and an axial deformation, and the parts are parts in the target bearing assembly that affect the axial deformation of the bearing; the target pretightening force obtaining module 92 is used for obtaining the target pretightening force required by the bearing; a target axial deformation determining module 93, configured to determine a plurality of target axial deformations from axial stiffness relationships of the plurality of parts based on the target pretightening force; the thickness determination module 94 of the tuning shim is configured to determine a target thickness value of the tuning shim based on the plurality of target axial deformations.
The device for determining thickness of adjusting gasket provided in the embodiment of the application is used for executing the following procedures: firstly, acquiring axial rigidity relations of a plurality of parts in a target bearing assembly, wherein the axial rigidity relations comprise corresponding relations of axial force and axial deformation, and the parts are parts which influence the axial deformation of a bearing in the target bearing assembly; then, obtaining target pretightening force required by the bearing; thirdly, determining a plurality of target axial deformation amounts from the axial rigidity relation of the plurality of parts based on the target pretightening force; finally, a target thickness value for the tuning shim is determined based on the plurality of target axial deformations. In the process of determining the thickness of the adjusting gasket, the influence of the axial rigidity relation of each part in the bearing assembly on the thickness of the adjusting gasket is considered, so that the accuracy of adjusting the thickness of the gasket is improved, and the assembled bearing can meet the design requirement.
In one specific implementation, the part includes: a bearing; the axial stiffness relation of the bearing comprises a corresponding relation between the first axial force and the first axial deformation; the target pre-tightening force obtaining module 92 is specifically configured to obtain a target pre-tightening amount required by the bearing; inquiring in the corresponding relation between the first axial force and the first axial deformation based on the target pre-tightening amount; and taking the first axial force corresponding to the first axial deformation amount which is the same as the target pre-tightening amount as the target pre-tightening force.
In a specific implementation manner, the target axial deformation determining module 93 is specifically configured to query, for a corresponding relationship between an axial force and an axial deformation of each part, an axial stiffness relationship of the part based on a target pretightening force; and taking the axial deformation corresponding to the axial force identical to the target pretightening force as the target axial deformation.
In one particular implementation, the shim thickness determination module 94 is configured to calculate a first sum of a plurality of target axial deformations; and taking the first sum value and a second sum value of the thickness values of the adjusting gaskets when interference is not considered as target thickness values of the adjusting gaskets.
In a specific implementation, the apparatus further comprises: the bearing finite element analysis module is used for establishing an initial finite element model of the bearing; applying a first constraint condition to an initial finite element model of the bearing to obtain a finite element model with constraint of the bearing; carrying out finite element analysis on the finite element model with constraint of the bearing to obtain the axial rigidity relation of the bearing; the first constraint includes one or more of the following: frictional contact between the rollers and the upper and lower surfaces of the raceway; friction contact between the large end spherical surface of the roller and the inner ring flange; limiting radial deformation of an inner hole of an inner ring of the bearing; limiting the axial displacement of the left end face of the inner ring of the bearing; and applying a plurality of axial displacement loads to the right end face of the outer ring of the bearing.
In a specific implementation, the apparatus further comprises: the shell finite element analysis module is used for establishing an initial finite element model of the shell; applying a second constraint condition to the initial finite element model of the shell to obtain a finite element model with constraint of the shell; finite element analysis is carried out on the finite element model with the constraint of the shell, and the axial rigidity relation of the shell is obtained; the second constraint includes one or more of: fixing the connecting surface of the shell, and applying a plurality of axial displacement loads to the bearing holes; when the shell is a left shell, the direction of the axial displacement load is leftwards; when the housing is a right housing, the direction of the axial displacement load is rightward.
In a specific implementation, the apparatus further comprises: the transmission shaft finite element analysis module is used for establishing an initial finite element model of the transmission shaft; applying a third constraint condition to the initial finite element model of the transmission shaft to obtain a constrained finite element model of the transmission shaft; finite element analysis is carried out on the constrained finite element model of the transmission shaft, and the axial rigidity relation of the transmission shaft is obtained; the third constraint includes one or more of the following: fixing a first step surface of a transmission shaft, and applying a plurality of axial displacement loads to a second step surface of the transmission shaft; the first step surface and the second step surface are arranged opposite to each other, and the direction of the axial displacement load applied to the second step surface faces the first step surface.
The device for determining the thickness of the adjusting gasket provided by the embodiment of the invention can execute the method for determining the thickness of the adjusting gasket provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.
Fig. 10 is a schematic structural view of a determination apparatus for adjusting the thickness of a spacer according to the present embodiment. As shown in fig. 10, the shim thickness adjustment determining apparatus 1000 includes a processor 101, a memory 102, an input device 103, and an output device 104; the number of processors 101 in the electronic device may be one or more, one processor 101 being taken as an example in fig. 10; the processor 101, memory 102, input device 103, and output device 104 in the electronic device may be connected by a bus or other means, for example by a bus connection in fig. 10.
The memory 102 is a computer readable storage medium, and may be used to store a software program, a computer executable program, and modules, such as program instructions/modules corresponding to the data transmission method in the embodiment of the present invention. The processor 101 executes various functional applications and data processing of the electronic device by running software programs, instructions and modules stored in the memory 102, that is, implements the method for determining the thickness of the adjustment pad provided by the embodiment of the present invention.
The memory 102 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the terminal, etc. In addition, memory 102 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 102 may further include memory located remotely from processor 101, which may be connected to the electronic device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input means 103 may be used to receive entered numeric or character information and to generate key signal inputs related to user settings and function control of the electronic device, which may include a keyboard, mouse, etc. The output device 104 may include a display device such as a display screen.
The present embodiment also provides a storage medium containing computer-executable instructions for implementing the method of determining the thickness of an adjustment shim provided by the embodiments of the present invention when executed by a computer processor.
Of course, the storage medium containing the computer executable instructions provided in the embodiments of the present invention is not limited to the above-described method operations, and may also perform the related operations in the method for determining the thickness of the adjustment pad provided in any embodiment of the present invention.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present invention.
It should be noted that, in the above-mentioned embodiments of the search apparatus, each unit and module included are only divided according to the functional logic, but not limited to the above-mentioned division, as long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of determining an adjustment shim thickness, comprising:
acquiring axial rigidity relations of a plurality of parts in a target bearing assembly, wherein the axial rigidity relations comprise corresponding relations of axial force and axial deformation, and the parts are parts which influence the axial deformation of a bearing in the target bearing assembly;
obtaining a target pretightening force required by the bearing;
determining a plurality of target axial deformation amounts from the axial rigidity relation of a plurality of parts based on the target pretightening force;
and determining a target thickness value of the adjusting gasket based on the plurality of target axial deformations.
2. The method of claim 1, wherein the part comprises: a bearing; the axial rigidity relation of the bearing comprises a corresponding relation between a first axial force and a first axial deformation;
The obtaining the target pretightening force required by the bearing comprises the following steps:
obtaining a target pre-tightening amount required by the bearing;
inquiring in a corresponding relation between the first axial force and the first axial deformation based on the target pre-tightening amount;
and taking the first axial force corresponding to the first axial deformation amount which is the same as the target pre-tightening amount as the target pre-tightening force.
3. The method of claim 1 or 2, wherein said determining a plurality of target axial deformations from an axial stiffness relationship of a plurality of said parts based on said target pretension comprises:
inquiring the corresponding relation between the axial force and the axial deformation of each part in the axial rigidity relation of the part based on the target pretightening force;
and taking the axial deformation corresponding to the axial force which is the same as the target pretightening force as a target axial deformation.
4. The method of claim 1, wherein the determining a target thickness value for the tuning shim based on the plurality of target axial deformations comprises:
calculating a first sum of the plurality of target axial deformations;
and taking the first sum value and a second sum value of the thickness value of the adjusting gasket without considering interference as target thickness values of the adjusting gasket.
5. The method according to claim 1 or 2, further comprising:
establishing an initial finite element model of the bearing;
applying a first constraint condition to the initial finite element model of the bearing to obtain a finite element model with constraint of the bearing;
finite element analysis is carried out on the finite element model with constraint of the bearing, and the axial rigidity relation of the bearing is obtained;
the first constraint includes one or more of:
frictional contact between the rollers and the upper and lower surfaces of the raceway;
friction contact between the large end spherical surface of the roller and the inner ring flange;
limiting radial deformation of an inner bore of the inner ring of the bearing;
limiting the axial displacement of the left end face of the inner ring of the bearing;
and applying a plurality of axial displacement loads to the right end face of the outer ring of the bearing.
6. The method as recited in claim 1, further comprising:
establishing an initial finite element model of the shell;
applying a second constraint condition to the initial finite element model of the shell to obtain a finite element model with constraint of the shell;
finite element analysis is carried out on the finite element model with constraint of the shell, and the axial rigidity relation of the shell is obtained;
the second constraint includes one or more of:
Fixing the shell connecting surface, and applying a plurality of axial displacement loads to the bearing hole;
wherein when the housing is a left housing, the direction of the axial displacement load is to the left; when the housing is a right housing, the direction of the axial displacement load is rightward.
7. The method as recited in claim 1, further comprising:
establishing an initial finite element model of the transmission shaft;
applying a third constraint condition to the initial finite element model of the transmission shaft to obtain a constrained finite element model of the transmission shaft;
finite element analysis is carried out on the constrained finite element model of the transmission shaft, and the axial rigidity relation of the transmission shaft is obtained;
the third constraint includes one or more of:
fixing the first step surface of the transmission shaft, and applying a plurality of axial displacement loads to the second step surface of the transmission shaft;
the first step surface and the second step surface are arranged opposite to each other, and the direction of the axial displacement load applied to the second step surface faces the first step surface.
8. A determining device for adjusting a thickness of a spacer, comprising:
the axial rigidity relation acquisition module is used for acquiring axial rigidity relation of a plurality of parts in the target bearing assembly, wherein the axial rigidity relation comprises a corresponding relation between axial force and axial deformation, and the parts are parts which influence the axial deformation of the bearing in the target bearing assembly;
The target pretightening force acquisition module is used for acquiring the target pretightening force required by the bearing;
the target axial deformation determining module is used for determining a plurality of target axial deformation from the axial rigidity relation of a plurality of parts based on the target pretightening force;
and the thickness determining module of the adjusting gasket is used for determining a target thickness value of the adjusting gasket based on the target axial deformation amounts.
9. A determination device for adjusting the thickness of a shim, comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, carries out the steps of the determination method for adjusting the thickness of a shim according to any one of claims 1 to 7.
10. A storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of the method of determining an adjustment shim thickness according to any one of claims 1-7.
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| 陈德鑫;李松松;石兴磊;: "乘用车变速器轴承预紧力测试技术及自动调节方法", 轴承, no. 12, 5 December 2013 (2013-12-05), pages 42 - 46 * |
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