Positioning jig for transformer installation

Abstract

The utility model belongs to the technical field of jigs, and particularly relates to a positioning jig for transformer installation, which is provided with a first positioning block and a second positioning block, the first positioning block and the second positioning block are respectively provided with a first accommodating groove and a second accommodating groove, and the first accommodating groove and the second accommodating groove are coaxially arranged. The two ends of a rod body of the part are embedded into the first containing groove and the second containing groove correspondingly, in order to facilitate taking out of the part by an operator after assembly is finished, partition walls exist between the first positioning block and the second positioning block, and the distance between the partition walls is set so that the operator can take out the part manually and conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of fixture technology, specifically relating to a positioning fixture for transformer installation. Background Technology

[0002] As the internal structure of transformers becomes increasingly complex, higher demands are placed on the machining precision and assembly processes of the various components. One such component consists of a frustum-shaped base and a cylindrical rod. When stationary, the rod is perpendicular to the base, and the frustum-shaped base and cylindrical rod are connected by a spherical shaft. In subsequent machining processes, a hole needs to be drilled and glued at a fixed position at the end of the rod furthest from the base. During drilling, the component is placed on a positioning fixture to ensure the rod remains stationary relative to the base. After drilling and glue application, the operator removes the component from the positioning fixture, completing the drilling operation.

[0003] However, due to the action of the spherical shaft, the drill rod rotates relative to the chassis during drilling, disrupting the correct connection position between the rod and the chassis and altering the drilling tolerance. Therefore, positioning fixtures often use clamping or suction for positioning, and the shape and size of the positioning groove must have a very high degree of fit between the rods, ensuring a tight seal between the rod and the positioning groove. After assembly, the operator removes the parts.

[0004] However, because the edges of the parts and the positioning grooves of the positioning device fit tightly, and adhesive was applied to the ends of the rod, the rod is difficult to remove after the operation is completed. Operators usually pry it open from the chassis first, but this can easily damage the connection between the rod and the chassis, causing changes in the tolerances of the parts and affecting the quality and performance of the final product.

[0005] Therefore, a positioning fixture is needed to position the rod during drilling and dispensing operations, and to facilitate easy removal of the rod after the operation is completed, in order to solve the above problems. Utility Model Content

[0006] To address the aforementioned problems in the existing technology, this utility model provides a positioning fixture for transformer installation, which solves the problem that parts are difficult to remove from the positioning device after assembly.

[0007] The purpose of this utility model can be achieved through the following technical solution: a positioning fixture for transformer installation, including a positioning component, wherein a first positioning block and a second positioning block are provided on the positioning component, and a first receiving groove and a second receiving groove are respectively provided on the first positioning block and the second positioning block, there is a partition between the first positioning block and the second positioning block, the first receiving groove and the second receiving groove are coaxially arranged, and the two ends of the rod body of the part are respectively snapped into the first receiving groove and the second receiving groove.

[0008] The positioning component has a third receiving groove on its side wall, and the chassis of the part is fitted into the third receiving groove.

[0009] Preferably, the edges of the first positioning block and the second positioning block are aligned and coaxially arranged.

[0010] Preferably, the third receiving groove is provided with an arc-shaped limiting protrusion.

[0011] Preferably, the sidewall of the first receiving groove away from the second receiving groove is configured as an arc-shaped groove.

[0012] Preferably, the second receiving groove is provided with a mounting groove on the side near the third receiving groove, the mounting groove being used to receive the spherical shaft of the part.

[0013] Preferably, it further includes a clamping assembly mounted above the positioning assembly. The clamping assembly includes a movable part and a mounting base. The movable part includes a pressure handle and a pressure rod. One end of the pressure handle extends into an extension. The lower end of the extension is hinged to the top end of the pressure rod, and the upper end of the extension is hinged to the mounting base. The bottom end of the pressure rod is provided with a pressure pin. Rotating the pressure handle causes the pressure rod to move up and down. When the pressure rod moves downward, it causes the pressure pin to apply pressure above the rod body.

[0014] Preferably, it also includes a limiting component, which includes a guide rod disposed on the mounting base and a connecting structure slidably connected to the guide rod. The connecting structure is fixedly sleeved on the pressure rod. When the pressure handle is rotated, the pressure rod moves up and down, causing the connecting structure to move up and down along the guide rod.

[0015] The beneficial effects of this utility model are as follows:

[0016] The system includes a first positioning block and a second positioning block, each with a first receiving groove and a second receiving groove, arranged coaxially. The two ends of the rod body of the part are respectively fitted into the first and second receiving grooves. To facilitate easy removal of the part by the operator after assembly, a partition is placed between the first and second positioning blocks, with the distance between the partitions designed for easy manual removal. Furthermore, a clamping assembly is included to lock and position the ends of the rod body during the drilling process, preventing the part from moving. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of the part in this application;

[0019] Figure 2 This is a top view of the positioning component of this application;

[0020] Figure 3 This is a schematic diagram of the structure of the pressure handle of this application when it is not rotated;

[0021] Figure 4 This is a schematic diagram of the structure when the pressure handle of this application is rotated 90°.

[0022] Explanation of main component symbols

[0023] In the diagram: 11. Rod body; 12. Chassis; 21. Mounting slot; 22. First receiving slot; 23. Second receiving slot; 31. Pressure handle; 32. Pressure rod; 33. Mounting base. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] Please see Figure 1 , Figure 1This is a component of a transformer, consisting of a frustum-shaped base 12 and a cylindrical rod 11. The upper surface of the base 12 has a groove, which is used to engage with other components. When not rotating, the rod 11 is perpendicular to the base 12, and the frustum-shaped base 12 and the cylindrical rod 11 are connected by a spherical shaft. In subsequent processing, it is necessary to drill a hole and apply adhesive to the end of the rod 11 away from the base 12. However, when the drill rod drills a hole at the end of the rod 11, the rod 11 rotates relative to the base 12, thereby disrupting the correct connection position between the rod 11 and the base 12 and causing a change in the tolerance of the drilled hole.

[0026] In existing technologies, positioning devices need to consider the shape and size of the parts to ensure accurate positioning, in order to reduce changes in drilling tolerances caused by the movement of the rod 11 during the drilling operation. Positioning devices mostly use clamping or adsorption to achieve positioning. The positioning groove of the positioning device achieves the fitting and clamping positioning of the rod 11. Existing positioning fixtures limit the rod 11 through the tight positioning between the positioning groove and the rod 11. Therefore, the rod 11 and the positioning groove fit together perfectly. Moreover, since the rod 11 will be glued after the drilling operation, and since the pressure applied during the drilling operation comes from above the rod 11, the drill rod will apply pressure to the part during the drilling operation, further increasing the tightness of the connection between the rod 11 and the positioning groove. In addition, with the glue dispensing operation, the glue may drip onto the contact surface between the part and the positioning groove, making it difficult to remove the rod 11 from the positioning groove after the drilling and glue dispensing operation.

[0027] Therefore, to solve the above problem, please refer to Figures 1-4 This embodiment provides a positioning fixture for transformer installation. Please refer to [link / reference]. Figure 2 The positioning fixture includes a positioning component, on which a first positioning block and a second positioning block are provided. The first and second positioning blocks are respectively provided with a first receiving groove 22 and a second receiving groove 23, which are coaxially arranged. The rod 11 of the part is fitted into the first receiving groove 22 and the second receiving groove 23. To facilitate the removal of the part by the operator after assembly, a partition is provided between the first and second positioning blocks, the distance between which is set so that the operator can easily remove it manually. To facilitate the installation of the base 12 of the part, and since the base 12 and the rod 11 are perpendicular to each other, a third receiving groove is provided on the side wall of the positioning component away from the second receiving groove 23, and the base 12 of the part is fitted into the third receiving groove. The edges of the first and second positioning blocks are aligned and coaxially arranged to achieve the positioning of the rod 11.

[0028] As mentioned above, a semi-circular groove is formed on the upper surface of the chassis 12. In order to achieve more precise positioning of the frustum-shaped chassis 12, in one embodiment, an arc-shaped limiting protrusion is provided on the third receiving groove for the semi-circular groove on the frustum-shaped chassis 12. The arc-shaped limiting protrusion provided on the third receiving groove can increase the contact area between the chassis 12 and the third receiving groove, and improve the stability of the positioning between the third receiving groove and the chassis 12.

[0029] like Figure 1 As the spherical shaft of the part is slightly larger than the rod, a mounting groove 21 for accommodating the spherical shaft is provided above the positioning assembly. The mounting groove 21 is located on the side of the second accommodating groove near the third accommodating groove. That is, the mounting groove 21 is designed to correspond to the positional and dimensional relationship between the spherical shaft and the rod on the part.

[0030] Since the end of the rod 11 is an arc-shaped structure, in order to make the side wall of the second receiving groove 23 fit more closely to the end of the rod 11, the side wall of the first receiving groove 22 away from the second receiving groove 23 is set as an arc-shaped groove, so that the end of the rod 11 fits into the first receiving groove 22. Of course, the design of the above receiving grooves takes into account the tolerance of the parts, and the design dimensions of the receiving grooves conform to the fitting of the parts.

[0031] To facilitate the removal of rod 11 by operators, a partition is placed between the first receiving groove 22 and the second receiving groove 23. While this partition facilitates removal, it also reduces the contact area between the second receiving groove 23 and rod 11, thus decreasing the positioning accuracy of the positioning assembly. However, during drilling, the drill bit will exert a strong impact force on rod 11, causing it to vibrate and potentially disrupting the connection between rod 11 and the chassis 12. (Please refer to...) Figure 4In one embodiment, the positioning fixture further includes a clamping assembly mounted above the positioning component. The clamping assembly includes a movable part and a fixed mounting base 33. The mounting base 33 is disposed next to the positioning component. The movable part includes a pressure handle 31 and a pressure rod 32. The pressure handle 31 is L-shaped, with the long side of the L-shape being the handle, one end of the short side being an upper protrusion, and the other end being a lower protrusion. The upper protrusion is hinged to the mounting base 33, allowing the pressure handle 31 to rotate relative to the mounting base 33. The lower protrusion is hinged to the pressure rod 32. When the pressure handle 31 rotates relative to the mounting base 33, the pressure rod 32 can be driven to move up and down. The pressure rod 32 can only move up and down relative to the fixed mounting base 33. At the bottom end of the pressure rod 32... The device includes a pressure needle and a limiting component. The limiting component includes a guide rod mounted on the mounting base 33 and a connecting structure slidably connected to the guide rod. The connecting structure is fixedly sleeved on the pressure rod 32. When the pressure handle 31 is rotated, the pressure rod 32 moves up and down, causing the connecting structure to move up and down along the guide rod. The connecting structure can be a connecting plate. The connecting plate increases the downward pressure of the pressure rod 32. The guide rod limits the movement trajectory and direction of the pressure rod 32. Moreover, the width of the connecting plate is greater than that of the mounting base 33. When the connecting rod moves upward, due to the limitation of the width of the connecting plate, the connecting plate is stuck below the mounting base 33, limiting the upward movement distance of the pressure rod 32 and preventing the pressure handle 31 from rotating too far on the mounting base 33.

[0032] When the clamping assembly presses down on the rod 11, rotating the pressure handle 31 downwards moves the pressure rod 32 downwards until the pressure handle 31 and the mounting base 33 are perpendicular to each other and the pressure handle 31 is above the positioning assembly. Figure 3 As shown, at this time, pressure is applied to the upper surface of the pressure needle and the rod 11; after completing the drilling and dispensing operation, the pressure handle 31 is rotated upwards to move the pressure needle away from the surface of the rod 11, as shown. Figure 4 As shown.

[0033] During drilling, the drill rod rotates on the rod body 11 and applies pressure to perform the drilling operation. In order to prevent the drill rod from slipping on the rod body 11, it is necessary to improve the positioning effect of the pressure needle on the surface of the rod body 11. Therefore, in one embodiment, a flexible part is provided at the bottom end of the pressure needle to prevent the pressure needle from damaging the surface of the rod body 11 when it presses against the rod body 11. The flexible part can deform on the surface of the rod body 11 under the pressure of the pressure needle, further increasing the contact area between the pressure needle body and the surface of the rod body 11, and enhancing the positioning effect of the pressure needle on the rod body 11.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A positioning jig for transformer installation, characterized by, Including positioning assembly, first positioning block and second positioning block are arranged on the positioning assembly, first receiving groove and second receiving groove are respectively arranged on the first positioning block and the second positioning block, there is a partition between the first positioning block and the second positioning block, the first receiving groove and the second receiving groove are coaxially arranged, the rod body of the part is respectively clamped in the first receiving groove and the second receiving groove; The side wall of the positioning assembly is provided with a third receiving groove, and the bottom disc of the part is embedded in the third receiving groove.

2. The positioning jig for transformer installation according to claim 1, wherein The edge lines of the first positioning block and the second positioning block are aligned and coaxially arranged.

3. The positioning jig for transformer mounting according to claim 1, wherein The third receiving groove is provided with an arc-shaped limiting lug.

4. The positioning jig for transformer mounting according to claim 1, wherein The side wall of the first receiving groove away from the second receiving groove is arranged as an arc-shaped groove.

5. The positioning jig for transformer mounting according to claim 3, wherein The side of the second receiving groove close to the third receiving groove is provided with a mounting groove, and the mounting groove is used for accommodating the spherical shaft of the part.

6. The positioning jig for transformer mounting according to claim 1, wherein Further comprising a pressing assembly mounted above the positioning assembly, the pressing assembly comprises a movable part and a mounting seat, the movable part comprises a pressure handle and a pressure rod, one end of the pressure handle extends an extension part, the lower end of the extension part and the top end of the pressure rod are hinged, the upper end of the extension part and the mounting seat are hinged, the bottom end of the pressure rod is provided with a pressure needle, rotating the pressure handle drives the pressure rod to move up and down, the pressure rod moves downward, drives the pressure needle to exert pressure on the rod body.

7. The positioning jig for transformer mounting according to claim 6, wherein Further comprising a limiting assembly, the limiting assembly comprises a guide rod arranged on the mounting seat and a connecting structure in sliding connection with the guide rod, the connecting structure is fixedly sleeved on the pressure rod, rotating the pressure handle drives the pressure rod to move up and down, drives the connecting structure to move up and down along the guide rod.

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