Multipurpose positioning pin

Abstract

The utility model provides a multipurpose positioning pin which comprises a body, a first pin head is arranged at one end of the body, a second pin head is arranged at the other end of the body, the body of the first pin head is of a cross-shaped structure, and the body of the second pin head is of a square column-shaped structure. The body comprises a positioning table, a first connecting column is arranged on one side of the positioning table, a second connecting column is arranged on the other side of the positioning table, the outer diameter of the positioning table is larger than that of the second connecting column, and the outer diameter of the second connecting column is larger than that of the first connecting column. A first conical head section is arranged on the side, away from the positioning table, of the first pin head, a second conical head section is arranged on the side, away from the positioning table, of the second pin head, and functional grooves are formed in the end faces of the first conical head section and the second conical head section. After the positioning pin provided by the utility model is worn after being used for a period of time, restoration can be realized by replacing the pin heads, the body can be reused, the two ends of the positioning pin can be utilized, the pin heads at the two ends of the positioning pin are independently and detachably mounted on the body and can be replaced as required, and the positioning pin has multiple purposes and is high in use convenience.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile accessory welding auxiliary tooling, and particularly relates to a multipurpose positioning pin. BACKGROUND

[0002] The positioning pin is a part for taking the workpiece hole as a positioning reference and participating in limiting the degree of freedom of an object, and is used for controlling the linear motion of an object in three axial directions and the rotational motion of the object around three axes with one degree of freedom. The positioning pin is widely used in part assembly, production and detection and other production activities due to high positioning accuracy and good centering effect. In the automobile accessory welding production process, especially in large-batch automobile accessory production enterprises, one or more types of positioning pins are required for each type of product, the amount of the positioning pins is large, and the types are numerous, which is not conducive to storage and use. Common positioning pins are prone to wear after a period of use, and the wear will cause positioning deviation, resulting in reduced part machining accuracy. In addition, in the prior art, the worn positioning pins are usually directly scrapped, causing waste and increasing production manufacturing costs to some extent. Therefore, it is necessary to design a multipurpose positioning pin with low use cost. SUMMARY

[0003] In view of this, the application aims to overcome the defects in the prior art and provides a multipurpose positioning pin.

[0004] To achieve the above-mentioned purpose, the technical scheme of the application is as follows:

[0005] A multipurpose positioning pin comprises a body, a first pin head is arranged at one end of the body, and a second pin head is arranged at the other end of the body, the main body of the first pin head is in a cross-shaped structure, and the main body of the second pin head is in a square column-shaped structure; the body comprises a positioning table, a first connecting column is arranged on one side of the positioning table, and a second connecting column is arranged on the other side of the positioning table, the outer diameter of the positioning table is greater than the outer diameter of the second connecting column, and the outer diameter of the second connecting column is greater than the outer diameter of the first connecting column; a first taper head section is arranged on the side of the first pin head away from the positioning table, a second taper head section is arranged on the side of the second pin head away from the positioning table, and a functional groove is arranged on the end face of each of the first taper head section and the second taper head section.

[0006] Further, the functional groove is a polygonal groove.

[0007] Further, the functional groove is a square or hexagonal groove.

[0008] Further, external thread structures are arranged on the first connecting column and the second connecting column, and internal thread structures matched with the external thread structures of the connecting columns are arranged on the inner sides of the first pin head and the second pin head.

[0009] Further, the first connecting column is provided with a first ring groove, the second connecting column is provided with a second ring groove, the first pin head is provided with a first positioning hole at a non-arc surface position, a first positioning member is installed in the first positioning hole, a second positioning hole is arranged on one side of the second pin head, a second positioning member is installed in the second positioning hole, the inner end of the first positioning member is inserted into the first ring groove, and the inner end of the second positioning member is inserted into the second ring groove.

[0010] Further, the first positioning member and the second positioning member are both screws, the first positioning hole and the second positioning hole are both provided with a sink, the screw cap part of each positioning member is inserted into the corresponding sink, and the threaded section of the positioning member is connected with the thread on the corresponding positioning hole.

[0011] Further, the first positioning member is arranged along the radial direction of the first connecting column, and the second positioning member is arranged along the radial direction of the second connecting column.

[0012] Further, the length of the second connecting column is greater than the length of the first connecting column.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] The present application has reasonable structure design, each pin head can be detachably installed on the body, when the positioning pin is worn after being used for a period of time, the positioning pin can be restored by replacing the pin head, the body can be repeatedly used, the use cost is reduced, the service life of the positioning pin is effectively prolonged by replacing the pin head, meanwhile, both ends of the present positioning pin can be used, and the pin heads at both ends of the positioning pin are independently detachably installed on the body, the pin heads can be replaced according to the needs, one pin is used for multiple purposes, and the use convenience is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0016] Figure 1 It is a structural schematic diagram of the present application;

[0017] Figure 2 It is a schematic diagram of the second pin head in the present application;

[0018] Figure 3 It is a schematic diagram of the body in the present application;

[0019] Figure 4 It is a schematic diagram of the first pin head in the present application;

[0020] Figure 5 It is a top view of Figure 4 ;

[0021] Figure 6 Fig. 1 is a schematic view of the first connecting column and the second connecting column in the application. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0023] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0024] In the description of the application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood through specific circumstances.

[0025] The application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0026] A multi-purpose positioning pin, as shown in Figures 1 to 6 Fig. 1, comprises a body 1, a first pin head 2 at one end of the body, and a second pin head 3 at the other end, the first pin head body is in a cross-shaped structure, and the second pin head body is in a square column-shaped structure; the body comprises a positioning platform 4, a first connecting column 5 on one side of the positioning platform, and a second connecting column 6 on the other side, the outer diameter of the positioning platform is greater than that of the second connecting column, and the outer diameter of the second connecting column is greater than that of the first connecting column; the first pin head is provided with a first taper head section 7 away from the positioning platform, and the second pin head is provided with a second taper head section 8 away from the positioning platform.

[0027] The end faces of the first taper head section and the second taper head section are each provided with a functional groove 9. The functional groove is a polygonal recess, and the first pin head / second pin head can be conveniently screwed by means of the functional groove, so as to be detached from the body. For example, the functional groove is a square or hexagonal recess, and a four-prism or hexagonal wrench can be inserted into the functional groove to screw the corresponding pin head.

[0028] In an alternative embodiment, the first connecting column and the second connecting column are each provided with an external thread structure, and the first pin head and the second pin head are each provided with an internal thread structure matching the external thread structure of the corresponding connecting column. In this solution, the pin heads are screwed onto the corresponding connecting columns, and can be conveniently installed or detached by screwing operation.

[0029] In another alternative embodiment, the first connecting column is provided with a first ring groove, the second connecting column is provided with a second ring groove, the first pin head is provided with a first positioning hole 10 at a non-arc surface position, the first positioning hole is provided with a first positioning member, one side plane of the second pin head is provided with a second positioning hole 11, the second positioning hole is provided with a second positioning member, the inner end of the first positioning member is inserted into the first ring groove, and the inner end of the second positioning member is inserted into the second ring groove. In this solution, the pin heads are inserted into the corresponding connecting columns and positioned by the positioning members.

[0030] The first positioning member and the second positioning member are each a screw, the first positioning hole and the second positioning hole are each provided with a counterbore, the screw cap portion of each positioning member is inserted into the corresponding counterbore, and the threaded segment of the positioning member is connected with the thread of the corresponding positioning hole. The first positioning member is arranged radially along the first connecting column, and the second positioning member is arranged radially along the second connecting column. The length of the second connecting column is greater than the length of the first connecting column.

[0031] The structure of the present application is reasonable, each pin head can be detachably installed on the body, the pin head can be replaced when the positioning pin is worn after a period of use, the body can be repeatedly used, the use cost is reduced, the service life of the positioning pin is effectively prolonged by replacing the pin head, meanwhile, both ends of the present positioning pin can be used, and the pin heads at both ends of the positioning pin are independently detachably installed on the body, can be replaced as needed, one pin is used for multiple purposes, and the use convenience is high.

[0032] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-purpose dowel pin, characterized by: The application relates to a pin head, which comprises a body provided with a first pin head at one end and a second pin head at the other end, wherein the first pin head is in a cross-shaped structure and the second pin head is in a square column-shaped structure; the body comprises a positioning table provided with a first connecting column at one side and a second connecting column at the other side, wherein the outer diameter of the positioning table is larger than that of the second connecting column, and the outer diameter of the second connecting column is larger than that of the first connecting column; the side of the first pin head away from the positioning table is provided with a first taper head section, the side of the second pin head away from the positioning table is provided with a second taper head section, and the end faces of the first taper head section and the second taper head section are both provided with functional grooves.

2. The multi-purpose dowel pin of claim 1, wherein: The functional grooves are polygonal grooves.

3. A multi-purpose dowel pin as defined in claim 2 wherein: The functional grooves are square or hexagonal grooves.

4. The multi-purpose dowel pin of claim 1, wherein: The first connecting column and the second connecting column are both provided with external thread structures, and the inner sides of the first pin head and the second pin head are respectively provided with internal thread structures matched with the external thread structures of the corresponding connecting columns.

5. The multi-purpose dowel pin of claim 1, wherein: The first connecting column is provided with a first ring groove, the second connecting column is provided with a second ring groove, the first pin head is provided with a first positioning hole at a non-curved surface position, the first positioning hole is provided with a first positioning member, the side plane of the second pin head is provided with a second positioning hole, the second positioning hole is provided with a second positioning member, the inner end of the first positioning member is inserted into the first ring groove, and the inner end of the second positioning member is inserted into the second ring groove.

6. A multi-purpose dowel pin as defined in claim 5 wherein: The first positioning member and the second positioning member are both screws, the first positioning hole and the second positioning hole are both provided with sink tables, the screw cap portions of the first positioning member and the second positioning member are both sunk into the corresponding sink tables, and the threaded sections of the first positioning member and the second positioning member are connected with the threads of the corresponding positioning holes.

7. The multi-purpose dowel pin of claim 5, wherein: The first positioning member is arranged along the first connecting column in the radial direction, and the second positioning member is arranged along the second connecting column in the radial direction.

8. The multi-purpose dowel pin of claim 1, wherein: The length of the second connecting column is larger than that of the first connecting column.

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