Novel dowel pin structure

Abstract

The utility model belongs to mechanical positioning technical field relates to novel positioning pin structure, including base, one side middle part of base is fixedly connected with the tail end of positioning pin, the one end of tail end of positioning pin is away from base and is fixedly connected with rectangular connecting plate, the one end of rectangular connecting plate is away from tail end of positioning pin and is fixedly connected with the top end of positioning pin, the middle part of rectangular connecting plate is provided with adjusting assembly. The utility model discloses the setting of adjusting assembly, utilizes strong spring and drives adjusting plate to adapt to multiple different specifications workpieces to limit it to reduce when facing the positioning of different workpieces, still need to replace the positioning pin of new workpiece positioning hole size matching, and then increase the tediousness of operation procedure, reduce production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical positioning technology and relates to a novel positioning pin structure. Background Technology

[0002] Locating pins are crucial standard parts in the mechanical field, playing an indispensable role in the operation of mechanical systems and product manufacturing processes. Their core function is to restrict the degree of freedom of workpieces or components, ensuring that they are in the correct position during assembly, processing, or use.

[0003] However, when traditional locating pins restrict the workpiece's degree of freedom, they mainly rely on a tight fit with locating holes of specific specifications to achieve the positioning function. But this single fitting method has obvious limitations. When faced with the positioning requirements of workpieces of different specifications, the locating pins are often difficult to adapt due to their fixed size. Utility Model Content

[0004] The technical problem to be solved by this utility model is: However, when traditional positioning pins restrict the degree of freedom of workpieces, they mainly rely on the tight fit with positioning holes of specific specifications to achieve the positioning function. However, this single fit method has obvious limitations. When faced with the positioning requirements of workpieces of different specifications, the positioning pins are often difficult to adapt due to their fixed size.

[0005] The novel positioning pin structure described in this utility model includes a base, with the tail end of a positioning pin fixedly connected to the center of one side of the base. A rectangular connecting plate is fixedly connected to the end of the positioning pin away from the base, and the top end of the positioning pin is fixedly connected to the end of the rectangular connecting plate away from the tail end of the positioning pin. An adjustment component is provided in the center of the rectangular connecting plate.

[0006] The adjustment assembly includes four sets of hollow tubes, four sets of strong springs, and four sets of top columns. The four hollow tubes are respectively fixed to both sides of the rectangular connecting plate. One end of each of the four strong springs is fixed to the bottom of the four sets of hollow tubes. One end of each of the four top columns near the hollow tubes is fixed to the other end of each of the four sets of strong springs. A friction-reducing mechanism is provided in the middle of each of the four hollow tubes.

[0007] The adjustment assembly also includes two sets of adjustment plates, which are respectively fixed to the ends of the four sets of top columns away from the hollow tube, and the two ends of the two sets of adjustment plates near the top and tail ends of the positioning pins are both sloped.

[0008] The friction reduction mechanism includes four sets of annular grooves, which are respectively opened in the middle of the four sets of hollow tubes.

[0009] The friction reduction mechanism also includes multiple sets of balls, which are rotatably connected to the center of four sets of annular grooves.

[0010] The multiple balls are in contact with the side of the top post on one side.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by adjusting the setting of the components, a strong spring is used to drive the adjusting plate to adapt to various workpieces of different specifications, thereby restricting them, thus reducing the need to replace the positioning pins that match the positioning hole size of the new workpiece when positioning different workpieces, which increases the complexity of the operation process and reduces production efficiency.

[0012] By setting up a friction reduction mechanism, the friction between the top column and the hollow tube during the sliding process can be reduced, thereby improving the smoothness of the top column sliding. This, in conjunction with the adjustment component, can better complete the positioning of various workpieces. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a cross-sectional structural diagram of the adjusting plate and the tail end of the positioning pin of this utility model.

[0016] Figure 3 This is a schematic diagram of the internal structure of the hollow tube of this utility model.

[0017] Figure 4 This is a schematic diagram of the friction reduction mechanism of this utility model.

[0018] In the diagram: 1. Base; 11. Tail end of locating pin; 12. Rectangular connecting plate; 13. Top end of locating pin; 2. Hollow tube; 21. Strong spring; 22. Top column; 3. Adjusting plate; 4. Annular groove; 5. Ball bearing. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] Example 1

[0024] like Figures 1-4 As shown, the novel positioning pin structure includes a base 1, with a positioning pin tail end 11 fixedly connected to the middle of one side of the base 1, a rectangular connecting plate 12 fixedly connected to the end of the positioning pin tail end 11 away from the base 1, a positioning pin top end 13 fixedly connected to the end of the rectangular connecting plate 12 away from the positioning pin tail end 11, and an adjustment component provided in the middle of the rectangular connecting plate 12.

[0025] The adjustment assembly includes four sets of hollow tubes 2, four sets of strong springs 21, and four sets of top columns 22. The four hollow tubes 2 are respectively fixed to both sides of the rectangular connecting plate 12. One end of each of the four strong springs 21 is fixed to the bottom of the four sets of hollow tubes 2. One end of each of the four top columns 22 near the hollow tubes 2 is fixed to the other end of each of the four sets of strong springs 21. A friction reduction mechanism is provided in the middle of each of the four hollow tubes 2.

[0026] The adjustment assembly also includes two sets of adjustment plates 3. The two adjustment plates 3 are respectively fixed to the ends of the four sets of top columns 22 away from the hollow tube 2, and the two ends of the two sets of adjustment plates 3 near the top 13 of the positioning pin and the tail 11 of the positioning pin are both sloped.

[0027] During operation, when it is necessary to restrict the degree of freedom of the workpiece, the end of the locating pin 13 furthest from the rectangular connecting plate 12 can be inserted into the locating hole of the workpiece. As the locating pin 13 is inserted, the adjusting plate 3 will gradually enter the locating hole. When the end of the adjusting plate 3 near the locating pin 13 contacts the locating hole, due to the sloping design of both ends of the adjusting plate 3, it will be subjected to the pressure from the locating hole and the thrust, thus pressing down towards the rectangular connecting plate 12. When the adjusting plate 3 presses down, it will squeeze the top post 22, causing the top post 22 to slide towards the bottom of the hollow tube 2. 2. During sliding, the strong spring 21 will be squeezed, which will cause the strong spring 21 to be compressed and store energy under the influence of pressure. When the adjusting plate 3 is fully inserted into the positioning hole, the action of pushing the tail end 11 of the positioning pin can be stopped. At this time, the strong spring 21 will release the stored energy and rebound, thereby pushing the top column 22 and the adjusting plate 3 to move towards the inner wall of the positioning hole. Until the two sets of adjusting plates 3 are pushed to the side that is far away from each other and are in contact with the inner wall of the positioning hole, the strong spring 21 will be affected by the resistance and thus stop rebounding. In this way, the workpiece can be restricted.

[0028] This step involves adjusting the component settings and using a strong spring 21 to drive the adjusting plate 3 to adapt to various workpieces of different specifications, thereby restricting them. This reduces the need to replace the positioning pins with those matching the new workpiece's positioning hole size when positioning different workpieces, which would otherwise increase the complexity of the operation process and reduce production efficiency.

[0029] Example 2

[0030] like Figure 3 and Figure 4 As shown, the friction reduction mechanism includes four sets of annular grooves 4, which are respectively opened in the middle of the four sets of hollow tubes 2.

[0031] The friction reduction mechanism also includes multiple sets of balls 5, which are rotatably connected to the middle of four sets of annular grooves 4.

[0032] Multiple ball bearings 5 ​​are in contact with the side of the top post 22 on one side.

[0033] During operation, when the top column 22 slides in the middle of the hollow tube 2 under the influence of the strong spring 21, it will rub against the ball 5 during the sliding process because it is in contact with the ball 5. Under the action of friction, multiple sets of ball 5 can be driven to rotate in the middle of the annular groove 4. With the ball 5, the contact between the top column 22 and the inner wall of the hollow tube 2 can be reduced, thereby reducing the friction between them.

[0034] This step, through the setting of the friction reduction mechanism, can reduce the friction between the top column 22 and the hollow tube 2 during the sliding process, thereby improving the smoothness of the top column 22 sliding, so as to better complete the positioning work of various workpieces in conjunction with the adjustment component.

[0035] The novel positioning pin structure provided by this utility model is used as follows: During operation, when it is necessary to restrict the degree of freedom of the workpiece, the end of the positioning pin 13 away from the rectangular connecting plate 12 can be inserted into the positioning hole of the workpiece. As the positioning pin 13 is inserted, the adjusting plate 3 will gradually enter the positioning hole. When the end of the adjusting plate 3 near the positioning pin 13 contacts the positioning hole, due to the sloping design of both ends of the adjusting plate 3, it will be subjected to the pressure brought by the positioning hole and the thrust, thus pressing down towards the rectangular connecting plate 12. When the adjusting plate 3 is pressed down, it will squeeze the top post 22, causing the top post 22 to slide towards the bottom of the hollow tube 2. When the top post 22 slides, it will squeeze the strong spring 21, thereby causing the strong spring 21 to be compressed and store energy under the influence of pressure. When the adjusting plate 3 is fully inserted into the positioning hole... When the position pin tail 11 is pushed, the action can be stopped. At this time, the strong spring 21 will release the stored energy and rebound, thereby pushing the top column 22 and the adjusting plate 3 to move towards the inner wall of the positioning hole. When the two sets of adjusting plates 3 are pushed to fit against the inner wall of the positioning hole, the strong spring 21 will be affected by the resistance and stop rebounding. This can complete the workpiece restriction. During operation, when the top column 22 slides in the middle of the hollow tube 2 under the influence of the strong spring 21, it will rub against the ball 5 during the sliding process because it is in contact with the ball 5. Under the action of friction, multiple sets of ball 5 can be driven to rotate in the middle of the annular groove 4. With the setting of the ball 5, the contact between the top column 22 and the inner wall of the hollow tube 2 can be reduced, thereby reducing the friction between them.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel positioning pin structure, comprising a base (1), characterized in that: The base (1) has a positioning pin tail end (11) fixedly connected to the middle of one side. A rectangular connecting plate (12) is fixedly connected to the end of the positioning pin tail end (11) away from the base (1). The top end (13) of the positioning pin is fixedly connected to the end of the rectangular connecting plate (12) away from the positioning pin tail end (11). An adjustment component is provided in the middle of the rectangular connecting plate (12).

2. The novel positioning pin structure according to claim 1, characterized in that: The adjustment assembly includes four sets of hollow tubes (2), four sets of strong springs (21), and four sets of top columns (22). The four hollow tubes (2) are respectively fixed to both sides of the rectangular connecting plate (12). One end of each of the four strong springs (21) is fixed to the bottom of the four sets of hollow tubes (2). One end of each of the four top columns (22) near the hollow tubes (2) is fixed to the other end of each of the four sets of strong springs (21). A friction-reducing mechanism is provided in the middle of each of the four hollow tubes (2).

3. The novel positioning pin structure according to claim 2, characterized in that: The adjustment assembly also includes two sets of adjustment plates (3). The two adjustment plates (3) are respectively fixed to one end of the four sets of top columns (22) away from the hollow tube (2), and the two ends of the two sets of adjustment plates (3) near the top end (13) of the positioning pin and the tail end (11) of the positioning pin are both sloped.

4. The novel positioning pin structure according to claim 2, characterized in that: The friction reduction mechanism includes four sets of annular grooves (4), which are respectively opened in the middle of the four sets of hollow tubes (2).

5. The novel positioning pin structure according to claim 4, characterized in that: The friction reduction mechanism also includes multiple sets of balls (5), which are rotatably connected to the middle of four sets of annular grooves (4).

6. The novel positioning pin structure according to claim 5, characterized in that: The multiple balls (5) are in contact with the side of the top post (22) on one side.

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