CN203614541U - Positioning pin - Google Patents

Abstract

The utility model discloses a positioning pin, which is used to be installed in a pin hole. One end of the pin hole is provided with an internally threaded hole extending inward from the end face, and the pin body is close to one end side of the pin hole, and one or more spaced notches are extended upward from the end face, and the height of the notch is greater than the depth of the pin hole. During installation, the gas in the pin hole can be discharged conveniently and quickly, the installation strength is reduced, the installation is more convenient, and the deformation of the positioning pin is avoided during the installation process. Compared with the existing method of processing through holes in the positioning pin, the utility model Convenience, low cost, and high processing precision; the end of the pin body away from the pin hole is provided with an internal thread hole, which facilitates the disassembly of the pin body. The utility model has a simple structure and is convenient to use.

Description

a positioning pin

technical field

The utility model relates to a positioning pin.

Background technique

The positioning pin is a device used for positioning or connection, and is fixed in the pin hole by interference fit. The end of the existing positioning pin close to the inside of the pin hole is solid, so that the gas in the pin hole cannot be discharged during installation. The compression of the solid end of the body and the installation of the locating pin produce resistance. For this reason, the installation force needs to be increased to offset the resistance. However, further increased installation force will easily lead to deformation and bending of the locating pin, damage to the pin hole seat, etc., as described in the CN102305229A invention patent For the positioning pin, a through hole extending in the axial direction and penetrating the pin body is processed in the middle to discharge the gas in the pin hole. However, in actual production, the processing difficulty and cost of the through hole are very large, and it is difficult to To ensure its machining accuracy, especially for slender shape positioning pins, it is more difficult, more costly and less accurate to process through holes along the axial direction.

Utility model content

The technical problem to be solved by the utility model is to provide a positioning pin that reduces the labor intensity of positioning pin installation, avoids deformation during the installation process of the positioning pin, and is easy to process and has high precision.

In order to solve the above technical problems, the utility model is used to be installed in the pin hole, including a pin body, at least one notch along the axial direction is provided at intervals on one end side of the pin body, and the other end of the pin body is provided with Internally threaded hole extending inward from the end face.

The notch extends upward from its bottom end and its height is higher than the depth of the pin hole.

Both ends of the pin body are respectively provided with chamfers.

The pin body is cylindrical or conical.

The depth of the notch is less than the distance from the outer wall of the pin to its axis.

Compared with the prior art, the locating pin adopting the above scheme has the following advantages: the pin body is close to one end side of the pin hole, and one or more spaced notches are extended upward from the end face, and the height of the notch is greater than the depth of the pin hole. It can conveniently and quickly discharge the gas in the pin hole, reduce the labor intensity of installation and make the installation more convenient. High precision; the end of the pin body away from the pin hole is provided with an internal thread hole, which facilitates the disassembly of the pin body. The utility model has a simple structure and is easy to use.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail:

Fig. 1 is a structural representation of the utility model;

Fig. 2 is A-A direction sectional view among Fig. 1;

Fig. 3 is a diagram of the usage status of the utility model.

Detailed ways

As shown in Figure 1, Figure 2 and Figure 3, the positioning pin is used to be installed in the pin hole, including the pin body 1, the pin body 1 is fixed in the pin hole by interference fit, and the two pin hole seats are connected as One. The side of the pin body 1 near one end of the pin hole is provided with one or more gaps 2 arranged in the axial direction at intervals, and the gap 2 extends upward from the end near the end of the pin hole and its height is higher than the depth of the pin hole, which is convenient for The gas in the pin hole is discharged, which prevents the gas in the pin hole from being compressed by the pin body 1 and produces resistance to the installation of the positioning pin. In this embodiment, there are two gaps 2 symmetrically, and the depth of the gap 2 is smaller than that from the outer wall of the pin body 1 to its The distance of the axis line, that is, the two gaps 2 cannot intersect, so as to ensure the strength of the positioning pin. One end of the pin body 1 away from the pin hole is provided with an internal threaded hole 3 extending inward from the end surface, so as to facilitate the disassembly of the pin body 1 . The two ends of the pin body 1 are respectively provided with chamfers, which are convenient for the positioning pin to play a guiding role when it enters the positioning hole.

The structure of the utility model is suitable for cylindrical locating pins and conical locating pins. When the pin body is conical, the gap 2 is set along the inclination angle of the cone, and the setting method of the gap 2 in the conical and cylindrical locating pins is the same.

The utility model is not limited to the above-mentioned specific embodiments, and those skilled in the art can make some changes and modifications without departing from the spirit and scope of the utility model. The protection scope of the utility model should be based on the claims of the utility model.

Claims (5)

1. A positioning pin, used to be installed in a pin hole, comprising a pin body (1), characterized in that one end side of the pin body (1) is provided with at least one notch (2) along the axial direction at intervals ), the other end of the pin body (1) is provided with an internally threaded hole (3) extending inwardly from the end surface. 2. The positioning pin according to claim 1, characterized in that the notch (2) extends upward from its bottom end and its height is higher than the depth of the pin hole. 3. The positioning pin according to claim 2, characterized in that both ends of the pin body (1) are respectively provided with chamfers. 4. The positioning pin according to any one of claims 1-3, characterized in that the pin body (1) is cylindrical or conical. 5. The positioning pin according to claim 2, characterized in that the depth of the notch (2) is smaller than the distance from the outer wall of the pin body (1) to its axis.

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