An inner supporting tool

Abstract

The utility model belongs to the field of part manufacturing technology discloses an inner support tool. Among them including base and screw, base is inserted in the reserved hole of work piece, the outer wall of base and the inner wall of reserved hole abut, the inner wall of base is tapered, is equipped with internal thread on the inner wall, the screw is tapered, and the screw is screwed in the base, solve the problem of lower production efficiency under the prior art that the fixed mode of using positioning pin and AB glue is used to avoid the deformation of reserved round hole.

Description

Technical Field

[0001] This utility model relates to the field of parts manufacturing technology, and in particular to an internal support tooling. Background Technology

[0002] During the machining of mechanical parts, it is necessary to pre-drill round holes on the parts. If the mechanical parts are flat or have low strength, bending of the parts will cause deformation of the pre-drilled round holes, resulting in defective parts that cannot be used. Currently, cylindrical locating pins are usually inserted into the pre-drilled round holes in conjunction with AB glue to fill the holes and prevent deformation. However, when machining the mechanical parts later, the AB glue needs to be removed first, which is time-consuming and reduces production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide an internal support tooling that solves the problem of low production efficiency caused by the use of positioning pins and AB glue for fixing in the existing technology, which avoids deformation of the reserved round hole.

[0004] To achieve this objective, the present invention adopts the following technical solution: The present invention provides an internal support fixture, including a base and a screw. The base is inserted into a reserved hole in the workpiece. The outer wall of the base abuts against the inner wall of the reserved hole. The inner wall of the base is conical and has an internal thread. The screw is conical and is screwed into the base.

[0005] Preferably, the screw has a cross-shaped insertion groove.

[0006] Preferably, the outer wall of the base has a deformation opening.

[0007] Preferably, the deformation openings are provided in three sets at equal intervals along the circumference of the reserved hole axis.

[0008] Preferably, the inner support fixture further includes a fixture plate with a groove, and the lower end of the base is inserted into the groove.

[0009] Preferably, the groove is a rounded rectangle, and the base is also a rounded rectangle.

[0010] Preferably, a first screw hole is provided on the lower side of the groove, and a second screw hole is provided on the tooling plate, with the bolt screwed into the first screw hole and the second screw hole.

[0011] Preferably, the base is made of aluminum or steel.

[0012] Beneficial effects: When the tapered screw is screwed onto the base, the deeper the tapered screw is screwed in, the more it will support the inner wall of the base to expand outward. This will eventually allow the base to make an interference fit with the reserved hole of the workpiece, and the reserved hole will be filled by the base. In this way, when subsequent processing is needed, the screw can be removed directly, and then the base can be pulled out directly, improving production efficiency. Attached Figure Description

[0013] Figure 1 This is a sectional view of the base of this utility model;

[0014] Figure 2 This is a side view of the base of this utility model;

[0015] Figure 3 This is a side view of the screw of this utility model;

[0016] Figure 4 This is a top view of the screw of this utility model.

[0017] In the diagram: 1. Base; 11. Internal thread; 12. Deformation port; 2. Screw; 21. Insertion slot. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0022] In the current technology, in order to avoid deformation of the reserved holes on the machined parts, cylindrical pins are usually placed in the reserved holes. In order to prevent the cylindrical pins from falling out, AB glue is usually applied around the cylindrical pins. Before removing the cylindrical pins, the AB glue needs to be removed first. This will result in a lot of time being spent cleaning the AB glue when the machined parts need to be processed later, which will reduce the processing efficiency.

[0023] To solve the above problems, such as Figures 1 to 4 As shown, this utility model provides an internal support fixture, including a base 1 and a screw 2. The base 1 is inserted into a reserved hole in the workpiece. The outer wall of the base 1 abuts against the inner wall of the reserved hole. The inner wall of the base 1 is conical and has an internal thread 11. The screw 2 is conical and is screwed into the base 1.

[0024] The base 1 of this invention is inserted into a pre-drilled hole. The base 1 has an internal tapered thread. As the depth of insertion into the pre-drilled hole increases, the diameter of the tapered thread becomes narrower. This allows the tapered screw 2 to be screwed deeper into the base 1, resulting in greater outward expansion deformation of the base 1. Ultimately, this achieves an interference fit between the base 1 and the pre-drilled hole, ensuring the hole is completely filled and providing support, preventing deformation of the pre-drilled hole. It also reduces deformation of the workpiece. When further processing is required, the tapered screw 2 can be unscrewed in the opposite direction to remove the base 1 from the pre-drilled hole, eliminating the need for time-consuming AB glue cleaning and improving processing efficiency.

[0025] The screw 2 has a cross-shaped insertion slot 21. The cross-shaped insertion slot 21 is provided on the upper end of the tapered screw 2, which makes it easy for the cross screw 2 to be inserted into the insertion slot 21. This makes it easy for workers to insert or remove the tapered screw 2, reducing the difficulty of installation.

[0026] As the conical screw 2 is screwed deeper, a deformation port 12 is provided on the outer wall of the base 1. The deformation port 12 makes it easier for the conical screw 2 to deform and allows for a greater amount of deformation. This makes it easier for the conical screw 2 to completely fill the reserved hole after it is screwed in, thus reducing the deformation of the reserved hole.

[0027] The deformable opening 12 of this utility model is provided in three sets at equal intervals along the circumference of the reserved hole axis. This allows the base 1 to deform evenly under the push of the conical screw 2, so that the base 1 can deform evenly in all directions. The base 1 can bulge evenly in all directions, so as to fill the reserved hole more evenly and avoid deformation of the reserved hole.

[0028] The internal support fixture of this utility model also includes a fixture plate with a groove. The lower end of the base 1 is inserted into the groove. The base 1 of this utility model is usually installed on the fixture plate. This allows the workpiece to be fixed on the fixture plate by the internal support fixture. This allows the fixture plate to fix the workpiece as a whole, preventing deformation of the workpiece and thus preventing deformation of the reserved hole.

[0029] The groove on the tooling plate of this utility model is a rounded rectangle, and the base 1 is also a rounded rectangle. The base 1 can be inserted into the tooling plate by the cooperation of the base 1 and the rounded rectangle. The rounded rectangle is easy to process, and other geometric shapes can also be used, and it is not limited to rounded rectangles.

[0030] A first screw hole is provided on the lower side of the groove, and a second screw hole is provided on the tooling plate. The bolt is screwed into the first screw hole and the second screw hole. The base 1 can be locked onto the tooling plate by the bolt. Since the tooling plate itself is not easy to bend, the workpiece fixed on the tooling plate by the base 1 will not bend. This can protect the workpiece on the tooling plate and prevent it from bending, so that the workpiece can be smoothly processed in subsequent steps.

[0031] To ensure the strength of the base 1 filled in the reserved hole, the base 1 of this utility model is made of aluminum or steel, which can effectively support the inner wall of the reserved hole, increase the support and limit of the reserved hole, and prevent the subsequent deformation of the processed part.

[0032] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An internal support fixture, characterized in that, Includes a base (1) and a screw (2). The base (1) is inserted into a reserved hole in the workpiece. The outer wall of the base (1) abuts against the inner wall of the reserved hole. The inner wall of the base (1) is conical and has an internal thread (11). The screw (2) is conical and is screwed into the base (1).

2. The internal support fixture according to claim 1, characterized in that, The screw (2) has a insertion groove (21) which is cross-shaped.

3. The internal support fixture according to claim 1, characterized in that, The outer wall of the base (1) is provided with a deformation opening (12).

4. The internal support fixture according to claim 3, characterized in that, The deformation opening (12) is provided in three sets at equal intervals along the circumference of the reserved hole axis.

5. The internal support fixture according to claim 1, characterized in that, The inner support fixture also includes a fixture plate with a groove, and the lower end of the base (1) is inserted into the groove.

6. The internal support fixture according to claim 5, characterized in that, The groove is a rounded rectangle, and the base (1) is also a rounded rectangle.

7. The internal support fixture according to claim 5, characterized in that, A first screw hole is provided on the lower side of the groove, and a second screw hole is provided on the tooling plate. The bolt is screwed into the first screw hole and the second screw hole.

8. The internal support fixture according to claim 1, characterized in that, The base (1) is made of aluminum or steel.

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