CN114922890A - Positioning structure for simulating automobile welding screw - Google Patents
Positioning structure for simulating automobile welding screw Download PDFInfo
- Publication number
- CN114922890A CN114922890A CN202210510606.4A CN202210510606A CN114922890A CN 114922890 A CN114922890 A CN 114922890A CN 202210510606 A CN202210510606 A CN 202210510606A CN 114922890 A CN114922890 A CN 114922890A
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- simulating
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- 238000003466 welding Methods 0.000 title claims abstract description 22
- 238000004088 simulation Methods 0.000 claims abstract description 28
- 238000013016 damping Methods 0.000 claims abstract description 16
- 241000446313 Lamella Species 0.000 claims abstract description 15
- 230000000670 limiting effect Effects 0.000 claims description 32
- 230000000694 effects Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
- F16B5/0208—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread using panel fasteners, i.e. permanent attachments allowing for quick assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/10—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of bayonet connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The application discloses location structure of simulation car welding screw, including screw base simulation piece, rotatory three lamella locating pins, lamella body arcwall face, lamella body terminal surface, inserted bar, support, damping locating part, the body of rod, spring, driving lever, locating pin knock pin, the fixed stop collar of direction, three lamella location locking member spare, activity groove, buckle, card, end socket, support plate, jack, logical groove, constant head tank, dial hole and guide hole. The clamping buckle has the advantages that a positioning mode is provided, so that the clamping buckle can be completely and nondestructively assembled and disassembled under the condition that the clamping buckle of a mounted product has the same positioning effect as that of an assembled state; the structure of a simulated screw type environment fixing product is innovated, and the original polish rod positioning pin auxiliary compression structure is replaced by a rotatable and detachable three-piece positioning pin to directly realize three-way positioning; the driving lever and the angle limit of the driving lever are increased, the operation is more convenient and faster, and the angle conversion is effectively controlled.
Description
Technical Field
The application relates to the field of assembly manufacturing, in particular to a positioning structure for simulating automobile welding screws.
Background
The traditional mode of positioning a product by opening a hole on a vehicle body is changed into a mode of positioning the product by welding a screw; in the actual loading, the buckles of the side beams are installed on the screws to be clamped and supported so as to realize the positioning in the X/Y/Z direction.
And in examining a measuring process, how can guarantee to install the buckle of boundary beam and realize the locate mode the same with the loading state, can be again with product and buckle follow the complete harmless demolish of screw simultaneously, be the key technological problem of pendulum in examining a development. Therefore, a positioning structure simulating a welding screw of an automobile is provided for solving the problems.
Disclosure of Invention
The utility model provides a location structure of simulation car welding screw is used for solving among the prior art how to overcome and to guarantee to install under the product buckle and the same locate mode of assembled state, the problem of the unable harmless dismantlement of buckle behind the welding screw location product buckle, or the buckle can be the harmless dismantlement totally but the unable guarantee of guarantee installation product buckle and the same locate mode of assembled state behind the welding screw location product buckle.
According to one aspect of the application, a positioning structure for simulating automobile welding screws is provided, which comprises a screw base simulation block, wherein a guide fixing limit sleeve is fixedly arranged inside the screw base simulation block along the transverse direction, one end of the guide fixing limit sleeve is positioned at the front end of the screw base simulation block, a three-piece positioning locking rod piece is arranged inside the guide fixing limit sleeve in a clearance fit manner, a rotary three-piece positioning pin is detachably arranged at the rear end of the three-piece positioning locking rod piece, one end of the rotary three-piece positioning pin is positioned at the rear end of the screw base simulation block, a movable groove is formed in one end of the guide fixing limit sleeve, a poking hole is formed in one end face of the three-piece positioning locking rod piece, the poking hole is connected with a poking rod in an interference fit manner, the poking rod penetrates through the movable groove, and a support is fixedly arranged at the front end of the screw base simulation block, the tail end of the damping limiting piece is of a semi-spherical structure and is in contact with the rod surface of the shifting rod; and the rear end of the rotary three-petal positioning pin is provided with a buckle in a positioning way.
Furthermore, the front end of the three-petal positioning and locking rod piece is provided with an inserted rod, the inserted rod is connected with an insertion hole formed in one end of the three-petal positioning and locking rod piece in an embedded mode, a positioning groove is formed in the rod surface of the three-petal positioning and locking rod piece, a positioning pin ejector pin is installed in the positioning groove, and the positioning pin ejector pin is tightly pressed on the rod surface of the inserted rod.
Furthermore, a through groove is formed in the sleeve surface of the guide fixing limiting sleeve and is aligned with the positioning groove.
Further, the damping locating part includes the body of rod and spring, the body of rod is connected with the guide hole clearance fit who sets up on the support, the cover is equipped with the spring on the body of rod, the body of rod passes through spring and support elastic connection.
Furthermore, one end of the spring is fixedly connected with the bracket, and the other end of the spring is fixedly connected with the rod face of the rod body.
Furthermore, the rear end of the rotary three-petal positioning pin is provided with three petal bodies which are uniformly distributed.
Furthermore, the two sides of the buckle are provided with supporting plates, and the supporting plates are in contact with the rear end of the screw base simulation block.
Further, the slotted hole front end of buckle is provided with three evenly distributed's card, and forms three between the three card and dodge the groove, the card contacts with the lamella body terminal surface of the lamella body.
Furthermore, the rear end of the slotted hole of the buckle is provided with three end seats, and the end faces of the three end seats are provided with arc-shaped end faces.
Furthermore, the arc-shaped end face of the end seat is in contact with the arc-shaped face of the petal body.
Through the embodiment of the application, a positioning mode is provided, so that the buckle can be completely and nondestructively disassembled and assembled under the condition that the buckle of a product is installed and has the same positioning effect as the assembled state; the structure of a simulated screw environment fixing product is innovated, and the original polish rod positioning pin auxiliary compression structure for realizing three-direction positioning is replaced by a rotatably-detachable three-piece positioning pin for directly realizing three-direction positioning; the purpose of verifying the installation of parts in the pure original environment can be realized; the driving lever and the angle limit of the driving lever are increased, the operation is more convenient and faster, and the angle conversion is effectively controlled.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is an exploded view of the overall structure of one embodiment of the present application;
FIG. 2 is a schematic top view of an embodiment of the present application;
FIG. 3 is a schematic view of a position relationship structure of a shift lever according to an embodiment of the present disclosure;
FIG. 4 is a structural diagram illustrating a state of a snap fit according to an embodiment of the present application;
FIG. 5 is a schematic view of an embodiment of a rotating three-piece alignment pin and a curved surface of a body of the three-piece alignment pin;
fig. 6 is a schematic structural view of a rotating three-piece positioning pin and a piece end surface according to an embodiment of the present application;
FIG. 7 is a schematic view of a structure in a snap slot according to an embodiment of the present disclosure;
FIG. 8 is a schematic view of a structure of a clip and a support plate according to an embodiment of the present application;
FIG. 9 is a schematic view of an installation structure of a damping limiting member according to an embodiment of the present application;
fig. 10 is a diagram illustrating an effect of positioning a buckle for installing an original screw according to an embodiment of the present application.
In the figure: 1. a screw base simulation block; 2. rotating the three-piece positioning pin; 2.1, a petal arc-shaped surface; 2.2, the end face of the petal body; 2.3, inserting a rod; 3. a support; 4. a damping limit piece; 4.1, a rod body; 4.2, a spring, 5 and a deflector rod; 6. jacking a positioning pin; 7. a guide fixing limiting sleeve; 8. three-piece positioning and locking rod pieces; 9. a movable groove; 10. buckling; 10.1, card; 10.2, end seats; 10.3, supporting the plate; 11. a jack; 12. a through groove; 13. positioning a groove; 14. poking holes; 15. and (4) a guide hole.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1-10, a positioning structure for simulating a welding screw of an automobile includes a screw base simulation block 1, a guide fixing limiting sleeve 7 is transversely and fixedly installed inside the screw base simulation block 1, one end of the guide fixing limiting sleeve 7 is located at the front end of the screw base simulation block 1, a three-piece positioning and locking rod member 8 is installed inside the guide fixing limiting sleeve 7 in a clearance fit manner, a rotary three-piece positioning pin 2 is detachably installed at the rear end of the three-piece positioning and locking rod member 8, one end of the rotary three-piece positioning pin 2 is located at the rear end of the screw base simulation block 1, a movable groove 9 is formed at one end of the guide fixing limiting sleeve 7, a shifting hole 14 is formed in a rod surface at one end of the three-piece positioning and locking rod member 8, the shifting hole 14 is connected with a shifting rod 5 in an interference fit manner, the shifting rod 5 penetrates through the movable groove 9, a bracket 3 is fixedly installed at the front end of the screw base simulation block 1, the bracket 3 is provided with a damping limiting piece 4, the tail end of the damping limiting piece 4 is of a semi-spherical structure, and the tail end of the damping limiting piece 4 is in contact with the rod surface of the shift rod 5; and the rear end of the rotary three-petal positioning pin 2 is provided with a buckle 10 in a positioning way.
The front end of three lamella location locking member 8 is provided with inserted bar 2.3, inserted bar 2.3 is connected with the jack 11 gomphosis of seting up in three lamella location locking member 8 one end, set up constant head tank 13 on the face of three lamella location locking member 8, locating pin knock pin 6 is installed to constant head tank 13, locating pin knock pin 6 compresses tightly on the face of inserted bar 2.3, has realized three lamella location locking member 8's dismantlement installation, and locating pin knock pin 6 accessible screw thread carries out threaded connection with constant head tank 13.
The sleeve surface of the guide fixing limiting sleeve 7 is provided with a through groove 12, the through groove 12 is aligned with a positioning groove 13, and the through groove 12 is used for inserting a positioning pin ejector pin 6 and is used for installing a three-piece positioning locking rod piece 8.
The damping limiting part 4 comprises a rod body 4.1 and a spring 4.2, the rod body 4.1 is in clearance fit connection with a guide hole 15 formed in the support 3, the spring 4.2 is sleeved on the rod body 4.1, and the rod body 4.1 is elastically connected with the support 3 through the spring 4.2; one end of the spring 4.2 is fixedly connected with the bracket 3, and the other end of the spring 4.2 is fixedly connected with the rod surface of the rod body 4.1, so that the limiting is provided for the shift lever 5.
The rear end of the rotary three-petal positioning pin 2 is provided with three petal bodies which are uniformly distributed, and the angle of the arc-shaped surfaces of the petal bodies of the three petal bodies is 60 degrees.
Two sides of the buckle 10 are provided with supporting plate pieces 10.3, and the supporting plate pieces 10.3 are contacted with the rear end of the screw base simulation block 1; the front end of the slotted hole of the buckle 10 is provided with three evenly distributed clamping pieces 10.1, three avoidance grooves are formed among the three clamping pieces 10.1, and the clamping pieces 10.1 are in contact with the petal body end face 2.2 of the petal body; the rear end of the slotted hole of the buckle 10 is provided with three end seats 10.2, and the end surfaces of the three end seats 10.2 are provided with arc-shaped end surfaces; the arc terminal surface of end seat 10.2 contacts with the petal body arcwall face 2.1 of the petal body, is the mounted state this moment, and it is used for buckle 10's three direction location, has imitated the location effect of screw thread promptly.
The detachable rotary three-piece positioning pin 2 is a main positioning structure, is inserted into an insertion hole through an insertion rod 2.3 and is locked by a positioning pin jacking pin 6 to realize mounting, and the detachable mounting is realized by the mounting;
the three-petal positioning locking rod 8 is axially arranged in the guiding fixed limiting sleeve 7, and the deflector rod 5 is inserted into a deflector hole 14 of the three-petal positioning locking rod in the vertical axial direction for limiting;
then the guide fixing limiting sleeve 7 is axially arranged in the screw base simulation block 1, so that the flange structure of the guide fixing limiting sleeve is attached to the front end of the screw base simulation block 1, and the guide fixing limiting sleeve is fixed by bonding with industrial strong glue or locking with jackscrews.
The damping limiting part 4 is arranged on the bracket 3, the whole body is arranged at the front end of the screw base simulation block 1, the damping limiting part 4 has a limiting effect on the working and non-working states during axial rotation, namely the deflector rod 5 moves in the movable groove 9 and can drive the three-piece positioning locking rod piece 8 to rotate, the rotating angle is limited by the movable groove 9 and can only rotate by 30 degrees, the deflector rod 5 can extrude the hemispherical surface at one end of the rod body 4.1 during movement, and damping is provided through the spring 4.2 in the deflector rod to provide limiting for movement and movement;
because the inner side of a buckle 10 product is provided with 3 parts of guide, namely three end seats 10.2, 3 parts of cards 10.1 and 3 parts of avoidance, namely a single structure is 60 degrees, the structure of the rotary three-petal positioning pin 2 is also the same, in a non-working state, the buckle 10 can be directly sleeved on the rotary three-petal positioning pin 2, the petal body of the rotary three-petal positioning pin 2 enters through an avoidance groove, the arc-shaped surface 2.1 of the petal body of the rear petal body is contacted with the arc-shaped end surface of the end seat 10.2, then the deflector rod 5 is turned by toggling for 30 degrees to reach a working state, half of the arc-shaped surface 2.1 of the petal body of the rotary three-petal positioning pin 2 is also contacted with the arc-shaped surface of the end seat 10.2, the other half is separated, the relative position of the petal body and the avoidance groove is changed, the end surface 2.2 of the petal body is contacted with the card 10.1 to realize blocking, and the support plate 10.3 is contacted with the rear end of the screw base simulation block 1 to realize positioning; i.e. imitates the positioning effect of a thread.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a location structure of simulation car welding screw which characterized in that: the screw base simulation block comprises a screw base simulation block (1), wherein a guide fixing limiting sleeve (7) is arranged inside the screw base simulation block (1) along a transverse fixing direction, one end of the guide fixing limiting sleeve (7) is located at the front end of the screw base simulation block (1), a three-piece positioning locking rod piece (8) is arranged in the guide fixing limiting sleeve (7) in a clearance fit manner, a rotary three-piece positioning pin (2) is detachably arranged at the rear end of the three-piece positioning locking rod piece (8), one end of the rotary three-piece positioning pin (2) is located at the rear end of the screw base simulation block (1), a movable groove (9) is formed in one end of the guide fixing limiting sleeve (7), a poking hole (14) is formed in the rod face of one end of the three-piece positioning locking rod piece (8), a poking rod (5) is connected with the poking hole (14) in an interference fit manner, the poking rod (5) penetrates through the movable groove (9), a bracket (3) is fixedly mounted at the front end of the screw base simulation block (1), a damping limiting piece (4) is arranged on the bracket (3), the tail end of the damping limiting piece (4) is of a semi-spherical structure, and the tail end of the damping limiting piece (4) is in contact with the face of a shifting rod (5); the rear end of the rotary three-piece positioning pin (2) is provided with a buckle (10) in a positioning way.
2. The positioning structure for simulating the welding screw of the automobile as claimed in claim 1, wherein: the front end of three lamella location locking member (8) is provided with inserted bar (2.3), inserted bar (2.3) are connected with jack (11) gomphosis of seting up in three lamella location locking member (8) one end, constant head tank (13) have been seted up on the face of the pole of three lamella location locking member (8), locating pin knock pin (6) are installed in constant head tank (13), locating pin knock pin (6) compress tightly on the face of the pole of inserted bar (2.3).
3. The positioning structure for simulating the welding screw of the automobile as claimed in claim 1, wherein: a through groove (12) is formed in the surface of the guide fixing limiting sleeve (7), and the through groove (12) is aligned with the positioning groove (13).
4. The positioning structure for simulating the welding screw of the automobile as claimed in claim 1, wherein: damping locating part (4) are including the body of rod (4.1) and spring (4.2), the body of rod (4.1) is connected with guide hole (15) clearance fit of seting up on support (3), the cover is equipped with spring (4.2) on the body of rod (4.1), the body of rod (4.1) is through spring (4.2) and support (3) elastic connection.
5. The positioning structure for simulating the welding screw of the automobile as claimed in claim 4, wherein: one end of the spring (4.2) is fixedly connected with the bracket (3), and the other end of the spring (4.2) is fixedly connected with the rod surface of the rod body (4.1).
6. The positioning structure for simulating the welding screw of the automobile as claimed in claim 1, wherein: the rear end of the rotary three-petal positioning pin (2) is provided with three petal bodies which are uniformly distributed.
7. The positioning structure for simulating the welding screw of the automobile as claimed in claim 1, wherein: the two sides of the buckle (10) are provided with supporting plate pieces (10.3), and the supporting plate pieces (10.3) are in contact with the rear ends of the screw base simulation blocks (1).
8. The positioning structure for simulating the welding screw of the automobile as claimed in claim 1, wherein: the slotted hole front end of buckle (10) is provided with three evenly distributed's card (10.1), and forms three between three card (10.1) and dodge the groove, card (10.1) and the contact of lamella body terminal surface (2.2) of the lamella body.
9. The positioning structure for simulating the welding screw of the automobile as claimed in claim 1, wherein: the rear end of the slotted hole of the buckle (10) is provided with three end seats (10.2), and the end faces of the three end seats (10.2) are provided with arc-shaped end faces.
10. The positioning structure for simulating the welding screw of the automobile as claimed in claim 9, wherein: the arc-shaped end face of the end seat (10.2) is in contact with the arc-shaped face (2.1) of the petal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210510606.4A CN114922890B (en) | 2022-05-11 | 2022-05-11 | Positioning structure for simulating automobile welding screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210510606.4A CN114922890B (en) | 2022-05-11 | 2022-05-11 | Positioning structure for simulating automobile welding screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114922890A true CN114922890A (en) | 2022-08-19 |
| CN114922890B CN114922890B (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210510606.4A Active CN114922890B (en) | 2022-05-11 | 2022-05-11 | Positioning structure for simulating automobile welding screw |
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| CN (1) | CN114922890B (en) |
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| CN114922890B (en) | 2023-06-02 |
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