Blind hole pipe preparation tool

Abstract

The utility model discloses a blind hole pipe preparation tool. The blind hole pipe preparation tool comprises a base; a shell is arranged on one side of the base; a cover plate is arranged on the side, away from the base, of the shell. The base, the shell and the cover plate form a volume cavity; the base is provided with a core rod, the core rod is located on the inner side of the volume cavity, a gap exists between the core rod and the cover plate, and a blind hole pipe is prepared through the volume cavity; by designing the preparation tool, the green body of the blind hole pipe can be directly formed for sintering, the process steps of cutter machining are reduced, the machining cost is saved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of silicon carbide pipe processing, especially to a blind hole pipe preparation tool. BACKGROUND

[0002] In the existing preparation of silicon carbide pipe, when a blind hole pipe needs to be produced, a method of first processing sintering to form a solid pipe and then performing precision machining on the solid pipe to punch a hole is usually adopted. First, raw materials such as silicon carbide powder are made into a solid pipe green body, and then sintering is performed to densify the green body to form a solid pipe product with high hardness. After that, a cutter is used to drill holes and perform other precision machining operations on the solid pipe to form a blind hole pipe.

[0003] Due to the extremely high hardness of the sintered silicon carbide pipe, the cutter will be severely worn during drilling and other precision machining operations. When the cutter is rotating at high speed, the cutting edge is prone to wear and breakage. Not only will this greatly shorten the service life of the cutter, but it will also increase production costs due to frequent replacement of the cutter, and it will also affect production efficiency, as each replacement of the cutter requires a stoppage operation and a re-adjustment of the position and parameters of the cutter, making it impossible to achieve efficient continuous production. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a blind hole pipe preparation tool.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a blind hole pipe preparation tool, comprising:

[0006] a base;

[0007] One side of the base is provided with a shell;

[0008] The side of the shell away from the base is provided with a cover plate;

[0009] The base, the shell and the cover plate form a volume cavity;

[0010] A core rod is provided on the base, the core rod is located inside the volume cavity, and there is a gap between the core rod and the cover plate. The blind hole pipe is prepared through the volume cavity.

[0011] As a further description of the above technical scheme: the base comprises a first packaging part and a first limiting part, the first packaging part and the first limiting part are integrally connected coaxially, and the diameter of the first limiting part is smaller than the diameter of the first packaging part.

[0012] As a further description of the above technical scheme: a first through hole is formed in the first limiting part, and a threaded hole is formed in one side of the first limiting part, the threaded hole being in communication with the first through hole.

[0013] As a further description of the above technical solution: the inner diameter of the first through hole matches the outer diameter of the mandrel, so that one end of the mandrel is inserted into the inside of the first through hole.

[0014] As a further description of the above technical solution: a stop screw is arranged inside the threaded hole and in contact with the mandrel.

[0015] As a further description of the above technical solution: the cover plate comprises a second sealing part and a second limiting part, the second sealing part and the second limiting part are integrally coaxially connected, and the diameter of the second limiting part is smaller than the diameter of the second sealing part.

[0016] As a further description of the above technical solution: the inner diameters of both ends of the shell match the outer diameters of the first limiting part and the second limiting part, respectively.

[0017] As a further description of the above technical solution: a positioning ring is arranged outside the mandrel, and the outer diameter of the positioning ring matches the inner diameter of the shell.

[0018] As a further description of the above technical solution: the positioning ring comprises a connecting part and support parts at both ends of the connecting part, and the connecting part matches the mandrel.

[0019] As a further description of the above technical solution: a plurality of second through holes are arranged around the support parts at both ends.

[0020] The above technical solution has the following advantages or beneficial effects:

[0021] By designing the preparation tool, the green body of the blind hole pipe can be directly formed for sintering, thereby reducing the process steps of tool machining, saving machining cost, and improving production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure diagram of the preparation tool is provided for the utility model;

[0023] Figure 2 The structure diagram of the base is provided for the utility model;

[0024] Figure 3 The structure diagram of the cover plate is provided for the utility model;

[0025] Figure 4 The structure diagram of the positioning ring is provided for the utility model;

[0026] Figure 5 The front view of the positioning ring is provided for the utility model.

[0027] LEGEND:

[0028] 1, base; 11, first packaging part; 12, first limiting part; 13, first through hole; 14, threaded hole; 2, shell; 3, cover plate; 31, second packaging part; 32, second limiting part; 4, core rod; 5, positioning ring; 51, connecting part; 52, supporting part; 53, second through hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Referring to Figures 1-5 An embodiment provided by the utility model: a blind hole pipe preparation tool, comprising: a base 1; a shell 2 is arranged on one side of the base 1; a cover plate 3 is arranged on the side, away from the base 1, of the shell 2; the base 1, the shell 2 and the cover plate 3 form a volume cavity; a core rod 4 is arranged on the base 1, the core rod 4 is located inside the volume cavity, and a gap exists between the core rod 4 and the cover plate 3; the blind hole pipe is prepared through the volume cavity.

[0031] In the embodiment, after the base 1, the core rod 4, the shell 2 and the positioning ring 5 are assembled, the shell 2 is filled with powder, the core rod 4 is passed through, after the specified amount of silicon carbide powder is filled, the positioning ring 5 is taken out, the cover plate 3 is covered, and the silicon carbide powder is fired, so that the blind hole pipe can be directly formed. Through the design of the preparation tool, the green body of the blind hole pipe can be directly formed for sintering, the process step of cutter processing is reduced, the processing cost is saved, and the production efficiency is improved.

[0032] The base 1 comprises a first packaging part 11 and a first limiting part 12, the first packaging part 11 and the first limiting part 12 are integrally connected coaxially, and the diameter of the first limiting part 12 is smaller than the diameter of the first packaging part 11.

[0033] In the embodiment, the base 1 forms a stepped structure through the first packaging part 11 and the first limiting part 12, so that the shell 2 is conveniently installed and the leakage of silicon carbide powder is prevented.

[0034] A first through hole 13 is formed in the first limiting part 12, a threaded hole 14 is formed in one side of the first limiting part 12, the threaded hole 14 is in communication with the first through hole 13; the inner diameter of the first through hole 13 is matched with the outer diameter of the core rod 4, so that one end of the core rod 4 is inserted into the inside of the first through hole 13; a stop screw is arranged on the inside of the threaded hole 14 and is in contact with the core rod 4.

[0035] In the embodiment, the core rod 4 is inserted into the first through hole 13 of the first limiting part 12, and the core rod 4 is coaxially arranged with the first limiting part 12, and the stop screw in the adjusting threaded hole 14 is in contact with the curved surface of the core rod 4, and the core rod 4 is pressed to avoid loosening.

[0036] The cover plate 3 comprises a second sealing part 31 and a second limiting part 32, the second sealing part 31 and the second limiting part 32 are integrally coaxially connected, and the diameter of the second limiting part 32 is smaller than the diameter of the second sealing part 31.

[0037] In the embodiment, the sizes of the second sealing part 31 and the second limiting part 32 are the same as the sizes of the first sealing part 11 and the first limiting part 12, the inner diameters of the two ends of the shell 2 are matched with the outer diameters of the first limiting part 12 and the second limiting part 32 respectively, so that the volume cavity is closed, and the subsequent sintering process is facilitated.

[0038] The outer side of the core rod 4 is sleeved with the positioning ring 5, and the outer diameter of the positioning ring 5 is matched with the inner diameter of the shell 2; the positioning ring 5 comprises a connecting part 51 and support parts 52 located at two ends of the connecting part 51, and the connecting part 51 is matched with the core rod 4; a plurality of second through holes 53 are annularly arranged on the support parts 52 at two ends.

[0039] In the embodiment, the positioning ring 5 is sleeved on the outer side of the core rod 4, and is matched with the inner diameter of the shell 2, so that the concentricity of the bottom end and the top end of the core rod 4 is aligned, and a plurality of second through holes 53 are annularly arranged on the support parts 52, which does not affect the filling of the silicon carbide powder, and the positioning ring 5 can be taken out by tying a pulling rope at the second through hole 53, the positioning ring 5 is taken out after the filling is completed, the cover plate 3 is covered, and the base 1 and the shell 2 are in a vertical state for sintering to manufacture the silicon carbide blind hole pipe.

[0040] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A tooling for preparing blind-hole tubes, characterized in that, include: Base (1); A housing (2) is provided on one side of the base (1); A cover plate (3) is provided on the side of the housing (2) away from the base (1); The base (1), the housing (2), and the cover plate (3) form a volumetric cavity; A mandrel (4) is provided on the base (1). The mandrel (4) is located inside the volume cavity and there is a gap between it and the cover plate (3). A blind hole tube is prepared through the volume cavity.

2. The preparation tooling according to claim 1, characterized in that: The base (1) includes a first encapsulation part (11) and a first limiting part (12). The first encapsulation part (11) and the first limiting part (12) are integrally coaxially connected, and the diameter of the first limiting part (12) is smaller than the diameter of the first encapsulation part (11).

3. The preparation tooling according to claim 2, characterized in that: The first limiting part (12) is provided with a first through hole (13), and a threaded hole (14) is provided on one side of the first limiting part (12), and the threaded hole (14) is connected to the first through hole (13).

4. The preparation tooling according to claim 3, characterized in that: The inner diameter of the first through hole (13) matches the outer diameter of the mandrel (4), so that one end of the mandrel (4) is inserted into the inside of the first through hole (13).

5. The preparation tooling according to claim 3, characterized in that: A stop screw is provided inside the threaded hole (14) and contacts the mandrel (4).

6. The preparation tooling according to claim 3, characterized in that: The cover plate (3) includes a second encapsulation part (31) and a second limiting part (32). The second encapsulation part (31) and the second limiting part (32) are integrally coaxially connected, and the diameter of the second limiting part (32) is smaller than the diameter of the second encapsulation part (31).

7. The preparation tooling according to claim 6, characterized in that: The inner diameters at both ends of the housing (2) are respectively matched with the outer diameters of the first limiting part (12) and the second limiting part (32).

8. The preparation tooling according to claim 1, characterized in that: A positioning ring (5) is sleeved on the outside of the core rod (4), and the outer diameter of the positioning ring (5) matches the inner diameter of the shell (2).

9. The preparation tooling according to claim 8, characterized in that: The positioning ring (5) includes a connecting part (51) and support parts (52) located at both ends of the connecting part (51), and the connecting part (51) cooperates with the mandrel (4).

10. The preparation tooling according to claim 9, characterized in that: The support portions (52) at both ends are provided with a plurality of second through holes (53).

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