Tapping tool and tapping device based on special-shaped box body

By designing a tapping fixture for irregularly shaped boxes and using a combination of columns and pressure plates to fix the irregularly shaped boxes, the problem of non-perpendicular machining of threaded holes in irregularly shaped boxes was solved, and high-quality tapping was achieved.

CN224128768UActive Publication Date: 2026-04-17CHENGDU SIWI HIGH TECH IND GARDEN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGDU SIWI HIGH TECH IND GARDEN
Filing Date
2025-04-18
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

The threaded holes of irregularly shaped boxes are not machined perpendicularly, which affects the machining quality of the workpiece.

Method used

Design a tapping fixture based on an irregularly shaped box, including a column and a pressure plate. The irregularly shaped box is fixed by precision-machined screw holes and screws to ensure that the machined surface is perpendicular. A tapping servo mechanism is used for tapping.

Benefits of technology

This ensured the perpendicularity and depth requirements of the threaded holes in the irregularly shaped box, thus improving the processing quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a tapping tool based on a special-shaped box body and a tapping device. The tapping tool comprises stand columns, a special-shaped box body is arranged between the opposite stand columns, a pressing plate is detachably connected between the opposite stand columns, a tapping penetrating hole is formed in the pressing plate, a horizontal pressing plate positioning face is arranged on the lower portion of the pressing plate, a finish machining screw hole is formed in the tapping machining face of the special-shaped box body, and a second screw penetrates through the pressing plate to be connected with the finish machining screw hole. The pressing plate positioning face is attached to the tapping machining face. The tapping device comprises a workbench and further comprises the tapping tool, the stand column is fixed to the workbench, and a tapping machine is arranged above the tapping through hole. The machining tool has the beneficial effects that the machining perpendicularity is guaranteed through finish machining of a plurality of threaded holes in the special-shaped box body, the pressing plate made of strip-shaped materials is fixed through counter bore screws, then the pressing plate is fixed to the stand column, it is guaranteed that the threaded hole face of a workpiece is perpendicular to the supporting face, and then tapping is conducted through the tapping servo mechanism; and the requirements for the perpendicularity and depth of tapping are met.
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Description

Technical Field

[0001] This application belongs to the field of machining technology, specifically relating to a tapping fixture and tapping device based on an irregularly shaped box, which is particularly suitable for irregularly shaped boxes and ensures that the perpendicularity of the threaded hole and the mounting surface are within tolerance. Background Technology

[0002] With the rapid development of the electronics industry, various irregular and special-shaped boxes are produced for different purposes, resulting in highly irregular external shapes. This poses difficulties for the processing of complex box parts. Irregularly shaped boxes are an important core product of our company. After being processed on a CNC milling machine, the process is arranged for a fitter to perform tapping. Due to the irregular shape, the tapping of the threaded holes is not perpendicular, affecting the processing quality of the workpiece. Utility Model Content

[0003] The purpose of this application is to provide a tapping fixture and tapping device based on an irregularly shaped box, which effectively solves the problem of machining threaded holes on the mounting surface of the irregularly shaped box and ensures machining quality.

[0004] The objective of this application is achieved through the following technical solution:

[0005] A tapping fixture based on an irregularly shaped box includes columns arranged opposite each other, an irregularly shaped box arranged between the opposing columns, and a pressure plate detachably connected between the opposing columns. The pressure plate has tapping holes, and a horizontal pressure plate positioning surface is provided at the bottom of the pressure plate. At least two precision-machined screw holes are provided on the tapping surface of the irregularly shaped box. A second screw passes through the pressure plate and connects to the precision-machined screw holes. The pressure plate positioning surface is in contact with the tapping surface.

[0006] Furthermore, the column arrangement includes at least four columns, with at least two columns on each side.

[0007] Furthermore, the columns are arranged in a rectangular pattern, comprising four columns.

[0008] Furthermore, the columns are all the same height, and the pressure plate is a flat plate.

[0009] Furthermore, the upper part of the column is provided with a horizontal column bonding surface, and the lower part of the pressure plate is provided with a horizontal pressure plate bonding surface, and the column bonding surface and the pressure plate bonding surface are bonded together.

[0010] Furthermore, it also includes a first screw, which passes through the pressure plate and connects to the column.

[0011] Furthermore, the second screw is arranged on both sides of the tapping hole.

[0012] Furthermore, the tapping hole is provided with two precision-machined screw holes.

[0013] Furthermore, the tapping hole is an oblong hole or a round hole.

[0014] A tapping device based on an irregularly shaped box includes a worktable and the aforementioned tapping fixture based on the irregularly shaped box. A column is fixed on the worktable, and a tapping machine is arranged above the tapping hole.

[0015] The beneficial effects of this application are as follows: By precision machining several threaded holes on the irregularly shaped box body, the machining perpendicularity is ensured. A pressure plate made of a suitable strip material is fixed with countersunk screws, and then the pressure plate is fixed on the column to ensure that the threaded hole surface of the workpiece is perpendicular to the support surface. Then, a tapping servo mechanism is used to tap the hole, ensuring the perpendicularity and depth requirements of the tapping.

[0016] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and are claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding this solution, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected in this application, and will not be exhaustively listed here. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this application.

[0018] Figure 2 This is a schematic diagram of the irregular-shaped box structure of this application.

[0019] In the diagram: 1-Column, 2-Pressure plate, 3-Irregularly shaped box, 4-First screw, 5-Second screw, 6-Column mating surface, 7-Pressure plate mating surface, 8-Pressure plate positioning surface, 9-Tapping surface, 10-Fine machined screw hole, 11-Tapping through hole, 12-Workbench, 13-Tapping machine. Detailed Implementation

[0020] The present application will be further described below with reference to specific embodiments and accompanying drawings.

[0021] Example 1

[0022] refer to Figure 1 and Figure 2 As shown, a tapping fixture based on an irregularly shaped box includes a column 1, a pressure plate 2, an irregularly shaped box 3, a first screw 4, and a second screw 5.

[0023] The uprights 1 are arranged opposite each other to provide a supporting foundation and to create space for the boxes. Irregularly shaped boxes 3 are arranged between the opposite uprights 1, using the space between them to place the boxes and avoid them touching the workbench.

[0024] A pressure plate 2 is detachably connected between the opposing columns 1. The pressure plate 2 is fixed between the opposing columns 1, providing a base for placing and fixing the irregularly shaped box 3. The pressure plate 2 can be flexibly installed and removed through the detachable connection, which is convenient for operation. The pressure plate 2 is provided with a tapping hole 11 so that the tapping machine can pass through the tapping hole 11 to tap the irregularly shaped box 3.

[0025] The lower part of the pressure plate 2 is provided with a horizontal pressure plate positioning surface 8. The pressure plate positioning surface 8 is in contact with the tapping surface 9 of the irregular box 3. After the irregular box 3 is fixed on the pressure plate 2, the tapping surface 9 is also in a horizontal state due to the contact between the pressure plate positioning surface 8 and the tapping surface 9. The specific tapping is carried out with the horizontal tapping surface 9 as the reference.

[0026] The tapping surface 9 of the irregular box 3 is provided with at least two precision-machined screw holes 10. The second screw 5 passes through the pressure plate 2 and connects to the precision-machined screw holes 10. The precision-machined screw holes 10 are machined by a precision machining tool and have good perpendicularity and precision. By connecting the second screw 5 through the precision-machined screw holes 10, the irregular box 3 is accurately fixed on the pressure plate 2, ensuring a good fit between the positioning surface and the machining surface, and providing a guarantee for tapping.

[0027] At least four columns 1 are arranged, with at least two columns 1 on each side. All columns 1 together support a pressure plate 2, ensuring the fixed connection of the pressure plate 2 at multiple positions and achieving stable placement of the pressure plate 2. Preferably, four columns 1 are arranged in a rectangular pattern to connect the four corners of the pressure plate 2.

[0028] The columns 1 have the same height, and the pressure plate 2 is a flat plate. Since the columns 1 have the same height, the pressure plate 2 can be directly fixed between the opposite columns 1 to achieve the horizontal arrangement of the pressure plate 2. The lower end surface of the pressure plate 2 also forms a horizontal pressure plate positioning surface 8.

[0029] The upper part of the column 1 is provided with a horizontal column mating surface 6, and the lower part of the pressure plate 2 is provided with a horizontal pressure plate mating surface 7. The column mating surface 6 and the pressure plate mating surface 7 are mated together to achieve a relatively tight connection between the column 1 and the pressure plate 2, ensuring that the pressure plate 2 is fixed on the column 1.

[0030] The first screw 4 passes through the side of the pressure plate 2 and connects to the column 1, realizing a detachable connection between the column 1 and the pressure plate 2. During tapping, the irregularly shaped box 3 is first fixed on the pressure plate 2, then the pressure plate 2 is fixed on the column 1, and then the tapping operation is performed.

[0031] The second screw 5 is arranged on both sides of the tapping hole 11 to act on the irregular box 3 on both sides of the tapping hole 11, which helps to maintain the structural stability of the middle tapping position and ensure the final processing quality.

[0032] Two precision-machined screw holes 10 are arranged on the tapping hole 11. Matching the position of the second screw 5, the two precision-machined screw holes 10 are also located on both sides of the tapping position. With minimal precision machining work, the precise fixation of the irregular box 3 can still be guaranteed.

[0033] Depending on the needs of the tapping operation, the tapping hole 11 can be an oblong hole or a round hole. An oblong hole can be used for multiple tapping operations in one place, while a round hole is generally used for only one tapping operation.

[0034] Example 2

[0035] refer to Figure 1 and Figure 2 As shown, a tapping device based on an irregularly shaped box includes a worktable 12 and a tapping machine 13, and also includes the tapping fixture based on the irregularly shaped box of Embodiment 1.

[0036] The column 1 is welded or screwed to the workbench 12. A tapping machine 13 is arranged above the tapping hole 11. The tapping machine 13 passes through the tapping hole 11 to perform the tapping operation.

[0037] The workflow of this application is as follows: First, the tapping surface 9 of the irregular box 3 is precision machined, and two or more precision machined screw holes 10 are tapped vertically. Then, the irregular box 3 and the pressure plate 2 are connected with the second screw 5. Then, the pressure plate 2 and the column 1 are connected with the first screw 4 to ensure that the threaded holes of the tapping surface 9 of the irregular box 3 are perpendicular to the plane of the worktable 12. Finally, the remaining threaded holes are machined with the tapping machine 13 to ensure the perpendicularity and depth of the threaded holes.

[0038] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tapping tool based on a special-shaped box body, comprising a column (1), characterized in that: The columns (1) are arranged opposite each other, and irregularly shaped boxes (3) are arranged between the opposite columns (1). A pressure plate (2) is detachably connected between the opposite columns (1). The pressure plate (2) is provided with a tapping hole (11). The lower part of the pressure plate (2) is provided with a horizontal pressure plate positioning surface (8). The tapping surface (9) of the irregularly shaped box (3) is provided with at least two precision-machined screw holes (10). The second screw (5) passes through the pressure plate (2) and connects with the precision-machined screw hole (10). The pressure plate positioning surface (8) is in contact with the tapping surface (9).

2. A tapping tool based on a special-shaped box body according to claim 1, characterized in that: The column (1) is arranged with at least four columns, and at least two columns (1) are arranged on each side.

3. A tapping tool based on a special-shaped box body according to claim 2, characterized in that: The column (1) is arranged in a rectangular pattern with four columns.

4. The tapping tool based on the special-shaped box body according to claim 1, characterized in that: The columns (1) are all the same height, and the pressure plate (2) is a flat plate.

5. The tapping tool based on the special-shaped box body according to claim 1 or 4, characterized in that: The upper part of the column (1) is provided with a horizontal column bonding surface (6), and the lower part of the pressure plate (2) is provided with a horizontal pressure plate bonding surface (7). The column bonding surface (6) and the pressure plate bonding surface (7) are bonded together.

6. The tapping tool based on the special-shaped box body according to claim 1 or 4, characterized in that: It also includes a first screw (4), which passes through the pressure plate (2) and connects to the column (1).

7. The tapping tool based on the special-shaped box body according to claim 1, characterized in that: The second screw (5) is arranged on both sides of the tapping hole (11).

8. The special-shaped box body based tapping tool according to claim 1 or 7, characterized in that: The tapping hole (11) has two precision-machined screw holes (10).

9. The tapping tool based on the special-shaped box body according to claim 1, characterized in that: The tapping hole (11) is an oblong hole or a round hole.

10. A tapping device based on a profiled cassette, comprising a worktable (12), characterized in that: It also includes the tapping fixture based on the irregular box body as described in any one of claims 1 to 9, wherein the column (1) is fixed on the worktable (12) and the tapping machine (13) is arranged above the tapping hole (11).