CN220581465U - Automobile welding positioning pin - Google Patents
Automobile welding positioning pin Download PDFInfo
- Publication number
- CN220581465U CN220581465U CN202322321324.2U CN202322321324U CN220581465U CN 220581465 U CN220581465 U CN 220581465U CN 202322321324 U CN202322321324 U CN 202322321324U CN 220581465 U CN220581465 U CN 220581465U
- Authority
- CN
- China
- Prior art keywords
- pin
- pin rod
- mounting hole
- groove
- dowel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 28
- 239000003292 glue Substances 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Insertion Pins And Rivets (AREA)
Abstract
The utility model discloses an automobile welding positioning pin, which comprises a metal pin rod and a ceramic pin head, wherein a stop block is arranged on the metal pin rod, and the metal pin rod is divided into an upper pin rod and a lower pin rod by the stop block; the ceramic pin head is internally provided with a mounting hole, the upper pin rod is inserted into the mounting hole, a glue groove is formed in the space between the upper pin rod and the side wall of the mounting hole, and high-strength glue is placed in the glue groove. Through go up the round pin pole with form in the middle of the mounting hole and set up the gluey groove space of high strength glue for the high strength of solidification glues connecting pin pole and round pin head, avoids using threaded connection to lead to the problem that the positioning effect is not good because of the screw thread is not hard up.
Description
Technical Field
The utility model relates to the technical field of mechanical welding accessories, in particular to an automobile welding positioning pin.
Background
The locating pin is a part taking the workpiece hole as a locating reference and participating in limiting the freedom degree of an object, and is used for controlling the linear motion of the object in three axial directions and the remaining freedom degree of the rotary motion around the three axes. The locating pin is high in locating effect and good in centering effect, and is widely applied to production activities such as component assembly and detection, especially in the welding process of automobile parts. In the use, traditional metal locating pin contacts very easily to appear wearing and tearing for a long time with spare part, consequently, appears a ceramic locating pin, and wherein, ceramic uses high wear-resisting high strength pottery, and this locating pin replaces the metal round pin with high wear-resisting high strength pottery, has improved the intensity of locating pin, has prolonged the life of locating pin. As disclosed in chinese patent document CN210343963U, the ceramic locating pin comprises a pin rod, a stop block is arranged in the middle of the pin rod, a first external thread and a second external thread are respectively arranged at two ends of the pin rod, a guide post is arranged between the first external thread and the stop block, the outer wall of the guide post is smooth, a ceramic pin is sleeved on the first external thread, a cylindrical groove is arranged on the central axis of one end of the ceramic pin, the other end is in a conical structure, an inner section of the cylindrical groove is provided with an inner thread, an outer section of the cylindrical groove is a guide ring with a smooth inner wall, the inner thread is in clearance fit with the first external thread, and the guide post is in clearance fit with the guide ring. The locating pin is connected with the ceramic pin through the internal and external threaded connection, however, in the use process, the ceramic pin is easy to loosen due to threaded connection, and thus the locating effect is affected.
Disclosure of Invention
In order to solve the technical problems, the utility model provides an automobile welding positioning pin, which comprises a metal pin rod and a ceramic pin head, wherein a stop block is arranged on the metal pin rod, and the metal pin rod is divided into an upper pin rod and a lower pin rod by the stop block; the ceramic pin head is internally provided with a mounting hole, the upper pin rod is inserted into the mounting hole, a glue groove is formed in the space between the upper pin rod and the side wall of the mounting hole, and high-strength glue is placed in the glue groove. Through go up the round pin pole with form in the middle of the mounting hole and set up the gluey groove space of high strength glue for the high strength of solidification glues connecting pin pole and round pin head, avoids using threaded connection to lead to the problem that the positioning effect is not good because of the screw thread is not hard up.
In one embodiment, the upper pin rod is of a cylinder structure with a thin upper section and a thick lower section; the mounting hole is of a cylinder structure with a thin upper section and a thick lower section. The structure can realize that the maximum length of the pin rod is positioned in the ceramic pin head, so that the connecting surface between the metal pin rod and the ceramic pin head is larger and is firmly connected, and the service life of the positioning pin is further prolonged.
In one embodiment, the height of the upper pin is less than the depth of the mounting hole; the height of the lower section of the upper pin rod is lower than the depth of the lower section of the mounting hole. The structure can realize the connection between the end part of the upper pin rod and the ceramic pin head in the radial direction of the two parts of the variable diameter part of the upper pin rod.
In one embodiment, the upper pin rod forms a first guiding cylindrical surface and a missing cylindrical surface, the first guiding cylindrical surface is attached to a part of the side wall of the mounting hole, meanwhile, the missing cylindrical surface is a position for filling high-strength glue, and when the missing cylindrical surface is parallel to the axial direction of the upper pin rod, the upper pin rod is connected with the ceramic pin head in a combined mode in the radial direction, and the connection between the upper pin rod and the ceramic pin head is firmer.
In one embodiment, the top of the upper pin forms a chamfer.
In one embodiment, the orifice of the lower section of the mounting hole forms a chamfer. The structure can realize the connection with the ceramic pin head in the radial direction of the third place.
In one embodiment, the lower pin forms a fixed slot; the upper part and/or the lower part of the fixing groove is/are a second guide cylindrical surface. The fixing groove is matched with a radial bolt or screw to fix the pin rod, and meanwhile, the second guide cylindrical surface is convenient for inserting the lower pin rod into the positioning hole.
In one embodiment, the fixed groove is an annular groove.
In one embodiment, the ceramic pin head includes a cylindrical section and a conical section, the cylindrical section forming a vent bit face and a third pilot cylinder face. The structure of the exhaust position surface can reduce the installation resistance and avoid the damage of the ceramic pin head.
In one embodiment, the stop block is provided with an anti-rotation positioning groove; and an avoidance groove is formed at the connection position of the stop block and the lower pin rod. The anti-rotation positioning groove can prevent the positioning pin from rotating in disorder; through setting up and dodging the groove, can avoid processing right angle defect and make the dog be difficult to laminating location frock surface's problem.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of the automotive welding dowel of the present utility model in one direction;
FIG. 2 is a schematic view of the structure of the automotive welding dowel of the present utility model in another direction;
FIG. 3 is a separation of the metal pin shaft and ceramic pin head of the present utility model;
FIG. 4 is a cross-sectional view of the automotive weld pilot pin of the present utility model;
FIG. 5 is an enlarged view of A in FIG. 4;
the reference numerals in the drawings are as follows: 1-a stop block; 2-upper pin rod; 3-lower pin rod; 4-mounting holes; 5-a first glue groove; 6-a second glue groove; 7-a first guiding cylinder; 8-missing cylinders; 9-a third glue groove; 10-a fourth glue groove; 11-a fixed groove; 12-a second guiding cylinder; 13-cylindrical segments; 14-a conical section; 15-exhaust level; 16-a third guiding cylinder; 17-an anti-rotation limit groove; 18-avoiding grooves.
Detailed Description
The following is a clear and complete description of the present utility model, taken in conjunction with the accompanying drawings, and it is evident that the described embodiments are some, but not all, embodiments of the present utility model. Other embodiments of the utility model, which are encompassed by the present utility model, are within the scope of the utility model as would be within the skill of those of ordinary skill in the art without undue burden.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
As shown in fig. 1 to 5, the present embodiment discloses an automobile welding positioning pin, which includes a metal pin rod and a ceramic pin head, wherein a stop block 1 is provided on the metal pin rod, the shape of the stop block 1 is not limited in particular, the shape of the stop block on the existing positioning pin can be adopted, such as a cake shape, further, in the present embodiment, an anti-rotation positioning groove 17 is provided on the stop block 1, and the shape of the anti-rotation positioning groove 17 is not limited in particular, such as a semi-cylindrical shape; the metal pin rod is connected with an upper pin rod 2 and a lower pin rod 3 of the stop block 1; the ceramic pin head comprises a cylindrical section 13 and a conical section 14, the cylindrical section 13 and the conical section 14 can be in the shape of the pin head of the existing locating pin, further, the cylindrical section 13 forms an exhaust position surface 15 and a third guide cylindrical surface 16, as for the structure of the third guide cylindrical surface 16 which is preferably attached to the side wall of the locating hole part of the automobile part, the structure of the exhaust position surface 15 is not particularly limited, and is a structure which forms an exhaust gap or an exhaust hole with the side wall of the locating hole part of the automobile part, particularly, if the cylindrical body is formed by cutting a part, in the embodiment, the cylindrical body is preferably symmetrically arranged, as shown in fig. 1, 2 or 3; the ceramic pin head is internally provided with a mounting hole 4, during mounting, the upper pin rod 2 is inserted into the mounting hole 4, a glue groove is formed in a space between the upper pin rod 2 and the side wall of the mounting hole 4, and high-strength glue is placed in the glue groove.
Specifically, the upper pin 2 is a cylindrical structure with a thin upper section and a thick lower section, preferably a two-section cylindrical structure, and correspondingly, the mounting hole 4 is also a cylindrical structure with a thin upper section and a thick lower section, preferably a two-section cylindrical structure. Preferably, the height of the upper pin 2 is lower than the depth of the mounting hole 4, at this time, a first glue groove 5 is formed between the top end of the upper pin 2 and the side wall of the mounting hole 4, high-strength glue is arranged in the first glue groove 5, the height of the lower section of the upper pin 2 is lower than the depth of the lower end of the mounting hole 4, at this time, a second glue groove 6 is formed between the top end of the lower section of the upper pin 2 and the side wall of the mounting hole 4, and high-strength glue is arranged in the second glue groove 6. Further, the hole opening at the lower section of the mounting hole 4 is chamfered, and at this time, the third glue groove 9 is formed in a space surrounding the chamfer, and the chamfer is also formed to avoid the phenomenon that the end surface of the ceramic pin head is not attached to the surface of the stopper 1 due to the defect of forming the right angle. Still further, the upper pin 2 forms a first guiding cylindrical surface 7 and a missing cylindrical surface 8, the first guiding cylindrical surface 7 is attached to the side wall of the mounting hole 4, the missing cylindrical surface 8 is formed by cutting a part of the cylindrical structure, and the specific structure is related to the structure of the upper pin 2, in this embodiment, the upper pin 2 is a two-section cylindrical body with a thin upper part and a thick lower part, at this time, the outer tangent circular diameters of the two cylindrical bodies of the upper pin 2 are designed to be identical with the two diameters of the mounting hole 4, so that a corresponding first guiding cylindrical surface 7 is formed, and at the same time, the cylindrical structure is cut vertically, so that the missing cylindrical surface 8 is formed. More specifically, two sections of cylinders with thin upper part and thick lower part are cut along the vertical direction, the cutting surface is a missing cylindrical surface 8, the rest side surface is a first guide cylindrical surface 7, and the diameters of the two sections of cylinders are the same as the diameters of the two sections of cylinders of the mounting hole 4; further, the top end of the upper pin 2 is chamfered.
The lower pin rod 3 is provided with a fixing groove 11, the fixing groove 11 is used for being matched with a bolt or a screw to limit the installation or the extraction of the positioning pin, and when the positioning pin is installed, the bolt or the screw is screwed in along the radial direction of the lower pin rod, so that the end part of the bolt or the screw extends into the fixing groove 11 to be fixed; the upper portion and/or the lower portion of the fixing groove 11 form a second guiding cylindrical surface 12, the second guiding cylindrical surface 12 is attached to a portion of a sidewall of the pin seat or the bracket positioning hole, and in this embodiment, the second guiding cylindrical surface 12 is an outer surface of the lower pin 3. The fixing groove 11 is an annular groove. Of course, the chamfer of some structures, such as the lowermost end of the lower pin 3, etc., is not described in detail herein.
The application process of the utility model is as follows:
the lower pin rod of the positioning pin is inserted into the positioning hole of the pin seat or the bracket, the positioning hole of the accessory (automobile door panel) is matched with the ceramic pin head by screwing in a bolt or a screw in the radial direction for fixation.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. The automobile welding positioning pin is characterized by comprising a metal pin rod and a ceramic pin head, wherein a stop block is arranged on the metal pin rod, and the metal pin rod is divided into an upper pin rod and a lower pin rod by the stop block; the ceramic pin head is internally provided with a mounting hole, the upper pin rod is inserted into the mounting hole, a glue groove is formed in the space between the upper pin rod and the side wall of the mounting hole, and high-strength glue is placed in the glue groove.
2. The automobile welding positioning pin according to claim 1, wherein the upper pin rod is of a cylinder structure with a thin upper section and a thick lower section; the mounting hole is of a cylinder structure with a thin upper section and a thick lower section.
3. The automotive welding dowel of claim 2, wherein the upper dowel bar has a height that is less than the depth of the mounting hole; the height of the lower section of the upper pin rod is lower than the depth of the lower section of the mounting hole.
4. The automobile welding dowel of claim 3, wherein the upper dowel forms a first guiding cylindrical surface and a missing cylindrical surface, the first guiding cylindrical surface conforming to a portion of a side wall of the mounting hole.
5. The automotive welding dowel of claim 4, wherein the top of the upper dowel bar is chamfered.
6. The automotive welding dowel of claim 5, wherein the aperture of the lower section of the mounting hole is chamfered.
7. The automobile welding detent pin according to any one of claims 1 to 5, wherein the lower pin rod forms a fixing groove; the upper part and/or the lower part of the fixing groove is/are a second guide cylindrical surface.
8. The automotive welding dowel of claim 7, wherein the fixed groove is an annular groove.
9. The automotive welding dowel of claim 8, wherein the ceramic dowel head comprises a cylindrical section and a tapered section, the cylindrical section forming a vent landing surface and a third guide cylinder.
10. The automobile welding positioning pin according to claim 9, wherein the stop block is provided with an anti-rotation positioning groove; and an avoidance groove is formed at the connection position of the stop block and the lower pin rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322321324.2U CN220581465U (en) | 2023-08-29 | 2023-08-29 | Automobile welding positioning pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322321324.2U CN220581465U (en) | 2023-08-29 | 2023-08-29 | Automobile welding positioning pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220581465U true CN220581465U (en) | 2024-03-12 |
Family
ID=90109198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322321324.2U Active CN220581465U (en) | 2023-08-29 | 2023-08-29 | Automobile welding positioning pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220581465U (en) |
-
2023
- 2023-08-29 CN CN202322321324.2U patent/CN220581465U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104093513B (en) | Screw-in cutter and the cutter holding device for this screw-in cutter | |
| CN220581465U (en) | Automobile welding positioning pin | |
| CN110630620A (en) | Split type motor valve and valve gap filling device | |
| CN106402169B (en) | Split type bearing assembly | |
| CN210948826U (en) | Hollow valve bridge guide rod | |
| CN216200565U (en) | Electronic expansion valve | |
| CN215902740U (en) | Positioning connection structure, cutter assembly, cutter head and cutter rod | |
| CN205927140U (en) | Tailstock and digit control machine tool | |
| CN210770171U (en) | Adjusting tool for meshing clearance of intermediate gear of low-speed marine diesel engine | |
| CN212443417U (en) | Cutting tool with replaceable tool bit | |
| CN210819396U (en) | Nut mounting tool for lamp body | |
| CN211247781U (en) | Multifunctional stainless steel wire processing safety part | |
| CN202622195U (en) | Connecting structure of weldment and spot welding bolt | |
| CN215444600U (en) | Piston rod assembly of ultrathin cylinder | |
| CN204621164U (en) | Drill bushing seat and drill bushing | |
| CN211314795U (en) | Screw nail | |
| CN110640171A (en) | Vibration-proof cutter bar for deep hole turning | |
| CN211162947U (en) | Machining clamp for metal fluoroplastic lining with shoulder | |
| CN217293083U (en) | Novel cylinder ejector rod rotation-proof structure | |
| CN220707034U (en) | Sleeve section bar connection structure | |
| CN217735971U (en) | Adjustable fastening bolt for automobile parts | |
| CN212479863U (en) | Bolt and nut assembly | |
| CN215673129U (en) | Metal shaft with adjustable length | |
| CN110273889B (en) | Lifting oil cylinder of empty box vehicle | |
| CN218517692U (en) | Material jar structure with adjustable cover half side cooperation length |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |