Special tool for detecting axial perpendicularity of metal corrugated pipe

Abstract

The invention belongs to the field of tool mold design, and relates to a special tool for detecting the axial perpendicularity of a metal corrugated pipe. The special tool comprises a shell and a cover plate. A stepped hole is formed in the shell, and the small end of the stepped hole serves as a metal corrugated pipe opening end positioning simulation mounting position; the large end of the stepped hole accommodates the metal corrugated pipe and is used for checking the outer diameter of the metal corrugated pipe; the cover plate is a circular cover plate with a boss, the boss is matched with a pipe opening, extending out of the large end of the stepped hole, of the other end of the metal corrugated pipe, two semi-annular through grooves are formed in the cover plate, and the through grooves serve as windows for observing the outer edge of the metal corrugated pipe.

Description

Technical Field

[0001] This invention belongs to the field of tooling and mold design, and relates to a special tooling for detecting the axial perpendicularity of metal bellows. Background Technology

[0002] A metal bellows is an elastic element that undergoes elastic deformation under external force. When a metal bellows is compressed axially, a difference in axial perpendicularity can lead to friction between the outer diameter of the bellows and the shell, reducing the service life of the bellows. Therefore, it is necessary to increase the detection of the axial perpendicularity of the bellows.

[0003] In the past, the method of using a square and feeler gauge to check the axial perpendicularity of the bellows could only check the axial perpendicularity of the bellows in its initial state. It could not directly check the gap between the metal bellows and the shell during axial compression, thus avoiding the risk of friction. Summary of the Invention

[0004] The purpose of this invention is to provide a method for detecting the axial perpendicularity of metal bellows, simulating the compression of the bellows, checking the gap between the outer diameter of the bellows and the shell, and easily observing and eliminating the risk of friction between the outer diameter of the bellows and the shell caused by the difference in the axial perpendicularity of the bellows.

[0005] Technical solution: A special tooling for detecting the axial perpendicularity of metal bellows is provided, comprising: a housing and a cover plate; The shell is provided with a stepped hole. The small end of the stepped hole is used to position the metal bellows pipe end to simulate the installation position. The large end of the stepped hole is used to house the metal bellows and to check the outer diameter of the metal bellows. The cover plate is a circular cover plate with a boss, where the boss is designed to fit the other end of the metal bellows that extends from the larger end of the stepped hole. Two semi-circular through slots are arranged on the cover plate, which serve as windows for observing the outer edge of the metal bellows.

[0006] Furthermore, the inner diameter of the larger end of the stepped hole is larger than the outer diameter of the metal bellows pipe opening.

[0007] Furthermore, the inner diameter of the small end of the stepped hole is smaller than the outer diameter of the metal bellows.

[0008] Furthermore, the outer diameter of the boss on the cover plate is smaller than the inner diameter of the metal bellows nozzle.

[0009] Furthermore, the outer diameter of the annular groove D of the cover plate is greater than or equal to the size D of the housing.

[0010] Furthermore, the two annular grooves on the cover plate are located directly above the outer diameter of the metal bellows placed inside the housing.

[0011] Furthermore, the casing is made of aluminum alloy.

[0012] Furthermore, the cover plate is made of aluminum alloy.

[0013] Beneficial effects: A special tooling is provided to check the axial perpendicularity during the compression operation of a metal bellows, thereby eliminating the risk of friction between the metal bellows and the housing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the casing.

[0015] Figure 2a This is a side view of the cover plate.

[0016] Figure 2b This is a top view of the cover plate.

[0017] Figure 3 This is a schematic diagram of a special tooling for detecting the axial perpendicularity of metal bellows.

[0018] Among them, 1-shell, 2-cover plate, 3-bellows. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0020] In the description of this invention, it should be understood that the terms "center", "axial", "vertical", "upper", "lower", "upper end", "bottom end", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, 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 limiting the scope of protection of this invention.

[0021] See Figure 1-3This invention relates to a special tooling for detecting the axial perpendicularity of metal bellows, comprising two parts: a housing 1 and a cover plate 2. The housing 1 is a cylinder containing two stepped holes; the smaller hole is used to position one end of the metal bellows to simulate its installation location, while the larger hole is used to inspect the outer diameter of the metal bellows. The cover plate 2 is a circular cover plate with a boss, which mates with the other end of the metal bellows. Two annular grooves are arranged on the cover plate as observation windows.

[0022] The inner diameter of the shell is smaller than that of the inner diameter of the hole d.

[0023] The inner diameter of the shell D is larger than the outer diameter of the metal bellows pipe opening.

[0024] The inner diameter of the shell is smaller than the outer diameter of the metal bellows.

[0025] The outer diameter of the boss d1 on the cover plate is smaller than the inner diameter of the metal bellows pipe opening.

[0026] The outer diameter of the annular groove of the cover plate is greater than or equal to the housing dimension D.

[0027] The shell and cover plate of this invention are made of aluminum alloy, which has good processing performance and is lightweight. During use, one end of the bellows is inserted into the small hole inside the shell and fixed; the boss on the cover plate is inserted into the other end of the bellows, and the bellows is compressed axially. By observing whether there is friction between the outer diameter of the bellows and the inner wall of the large hole in the shell through the annular groove on the cover plate, the operation is simple and easy to observe.

[0028] The present invention provides a special tooling for detecting the axial perpendicularity of metal bellows. The shell and cover plate can be processed according to the size of the bellows opening, the outer diameter, and the inner cavity size of the housing to be inspected. It can quickly and intuitively check the axial perpendicularity of the bellows during compression, eliminate the risk of friction between the bellows and the housing, and improve the service life of the bellows.

[0029] Example 1: The housing of the special tooling for detecting the axial perpendicularity of the metal bellows has a diameter d of 41.5 mm and a length of 10 mm; D is φ58 mm.

[0030] Example 2: The housing of the special tooling for detecting the axial perpendicularity of the metal bellows has a diameter (d) of φ41.5 mm and a depth of 5 mm; D is φ58 mm. It is equipped with two annular grooves and an observation window.

[0031] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0032] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A special tooling for detecting the axial perpendicularity of metal bellows, characterized in that, include: Shell (1), cover plate (2); The shell (1) is provided with a stepped hole inside. The small end of the stepped hole is used as the positioning simulation installation position of one end of the metal bellows pipe opening. The large end of the stepped hole is used to house the metal bellows (3) for checking the outer diameter of the metal bellows (3). The cover plate (2) is a circular cover plate with a boss, wherein the boss is for the other end of the metal bellows extending from the large end of the stepped hole. Two semi-circular through slots are arranged on the cover plate, which serve as windows for observing the outer edge of the metal bellows.

2. The tooling according to claim 1, characterized in that, The inner diameter of the stepped hole at the larger end is larger than the outer diameter of the metal bellows pipe opening.

3. The tooling according to claim 1, characterized in that, The inner diameter of the small end of the stepped hole is smaller than the outer diameter of the metal bellows.

4. The tooling according to claim 1, characterized in that, The outer diameter of the boss of the cover plate (2) is smaller than the inner diameter of the metal bellows pipe opening.

5. The tooling according to claim 1, characterized in that, The outer diameter of the annular groove D of the cover plate (2) is greater than or equal to the size of the shell D.

6. The tooling according to claim 1, characterized in that, The two annular grooves of the cover plate (2) are located directly above the outer diameter of the metal bellows (3) placed inside the shell (1).

7. The tooling according to claim 1, characterized in that, The casing is made of aluminum alloy.

8. The tooling according to claim 1, characterized in that, The cover plate is made of aluminum alloy.

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