Airtightness detection clamp

Abstract

The utility model discloses an air tightness detection fixture, including outer shell, precision piston, central positioning column, inner support chuck, precision chuck, workpiece, air tightness detection point, the precision piston is arranged inside the outer shell, the central positioning column is arranged inside one side of the precision piston, one end of the central positioning column extends outwards, the other end of the central positioning column extends outwards, and the other end of the central positioning column extends outwards. An inner supporting chuck and a precision chuck are attached to the outer wall of one end of the center positioning column and are symmetrically arranged up and down, a workpiece is jointly expanded outside the inner supporting chuck and the precision chuck, and an airtight detection point is arranged between the workpiece and the center positioning column. A through hole is formed in the center of the interior of the outer shell, the through hole sequentially penetrates through the interiors of the precision piston and the center positioning column, and piston sealing rings are arranged on the two sides of the precision piston in the direction close to the outer shell, the air tightness detection device can automatically conduct air tightness detection on the clamp, manual operation is not needed, and the automation degree is high.

Description

Technical field

[0001] The utility model relates to the technical field of mechanical processing, in particular to the technical field of an airtight detection fixture. [Background Technology]

[0002] In the mechanical manufacturing process, the fixture is used to fix the processing object and place it in an accurate position to accept construction or inspection. It is also called a clamp. The quality of the fixture design directly affects the processing efficiency and processing accuracy of the processing object. In particular, for processing objects with higher processing accuracy requirements, higher requirements are placed on the design of the fixture.

[0003] At present, the airtightness test of the fixture needs to be carried out during use to ensure that the workpiece will not leak during the processing, thereby ensuring the processing quality. However, the current airtightness test is performed manually, and manual labor is prone to fatigue during the long testing process, which in turn leads to inaccurate testing during the testing process, thereby affecting the processing quality. [Utility Model Content]

[0004] The purpose of the utility model is to solve the problems in the prior art and to provide an airtight detection fixture, which can automatically perform airtight detection on the fixture without manual operation and has a high degree of automation.

[0005] To achieve the above-mentioned purpose, the utility model proposes an airtight detection fixture, including an outer shell, a precision piston, a center positioning column, an inner support chuck, a precision chuck, a workpiece, and an airtight detection point. A precision piston is arranged inside the outer shell, and a center positioning column is arranged inside one side of the precision piston. One end of the center positioning column extends outward, and an inner support chuck and a precision chuck are respectively attached to the outer wall of one end of the center positioning column. The inner support chuck and the precision chuck are symmetrically arranged in the upper and lower parts, and the workpiece is jointly tightened on the outside of the inner support chuck and the precision chuck, and an airtight detection point is arranged between the workpiece and the center positioning column.

[0006] Preferably, a through hole is provided at the inner center of the outer shell, and the through hole passes through the interior of the precision piston and the center positioning column in sequence.

[0007] Preferably, piston sealing rings are provided on both sides of the precision piston close to the outer shell, and the piston sealing rings are symmetrically arranged in the upper and lower directions.

[0008] Preferably, first sealing rings are provided on both sides of the precision piston close to the outer shell, and the first sealing rings are symmetrically arranged in the upper and lower directions.

[0009] Preferably, a mounting block is provided on the side wall of the precision piston, and the center positioning column is installed inside the precision piston through the mounting block.

[0010] Preferably, second sealing rings are provided on both sides of the mounting block close to the precision piston, and the second sealing rings are symmetrically arranged in the upper and lower directions.

[0011] Beneficial effects of the utility model:

[0012] 1. The utility model inserts the inflation tube into the through hole of the clamp, connects the air source to the inflation tube, and then gradually fills in air with a certain pressure. During the inflation process, the pressure change is observed. If the pressure gradually decreases, it indicates that there is an air leakage in the clamp. The whole process is automated and the detection efficiency is high, so the airtightness of the clamp can be quickly detected, the production efficiency is improved, the production cost is reduced, and the problem of manual fatigue during a long detection process, which leads to inaccurate detection during the detection process, is solved.

[0013] 2. The utility model provides an internal support chuck and a precision chuck. When the user connects the pull tube on the hydraulic cylinder to the precision piston, the hydraulic cylinder is started, and the pull tube of the hydraulic cylinder drives the precision piston to move horizontally. Then the internal support chuck and the precision chuck move with the movement of the precision piston under the action of the mounting block, and then the internal support chuck and the precision chuck contact the inner hole of the workpiece and tighten the workpiece, thereby achieving clamping and fixation.

Brief Description of the Drawings

[0014] Figure 1 This is a main view of an airtightness detection fixture of the utility model;

[0015] Figure 2 This is an enlarged schematic diagram of point A of an airtightness detection fixture of the present utility model;

[0016] Figure 3 This is an enlarged schematic diagram of point B of an airtightness detection fixture of the present utility model;

[0017] In the figure: 1-outer shell, 2-precision piston, 3-center positioning column, 4-inner support chuck, 5-precision chuck, 6-workpiece, 7-airtightness detection point, 8-through hole, 9-piston sealing ring, 10-first sealing ring, 11-mounting block, 12-second sealing ring. [Specific implementation method]

[0018] See Figures 1 to 3The utility model is an airtight detection fixture, comprising an outer shell 1, a precision piston 2, a center positioning column 3, an inner support chuck 4, a precision chuck 5, a workpiece 6, and an airtight detection point 7. The outer shell 1 is provided with a precision piston 2, and a center positioning column 3 is provided inside one side of the precision piston 2. One end of the center positioning column 3 extends outward, and an inner support chuck 4 and a precision chuck 5 are respectively attached to the outer wall of one end of the center positioning column 3. The inner support chuck 4 and the precision chuck 5 are symmetrically arranged up and down. The outer sides of the inner support chuck 4 and the precision chuck 5 are jointly tightened with the workpiece 6, and an airtight detection point 7 is provided between the workpiece 6 and the center positioning column 3.

[0019] See Figure 1 The utility model provides an airtight detection fixture. A through hole 8 is provided in the inner center of the outer shell 1. The through hole 8 passes through the interior of the precision piston 2 and the center positioning column 3 in sequence. By inserting the inflation tube into the through hole 8 of the fixture and connecting the air source to the inflation tube, air of a certain pressure is gradually filled in. During the inflation process, the pressure change is observed. If the pressure gradually decreases, it indicates that there is an air leakage in the fixture. The whole process is automated and the detection efficiency is high, so that the airtight performance of the fixture can be quickly detected, the production efficiency is improved, and the production cost is reduced.

[0020] See Figure 1 The utility model is an airtight detection fixture. Piston sealing rings 9 are provided on both sides of the precision piston 2 close to the outer shell 1. The piston sealing rings 9 are symmetrically arranged up and down. By providing the piston sealing rings 9, the sealing performance of the fixture can be guaranteed.

[0021] See Figure 1 The utility model provides an airtight detection fixture. First sealing rings 10 are further provided on both sides of the precision piston 2 close to the outer shell 1. The first sealing rings 10 are symmetrically arranged in the upper and lower parts. By providing the first sealing rings 10, the sealing performance can be further improved.

[0022] See Figure 1 The utility model is an airtight detection fixture, the side wall of the precision piston 2 is provided with a mounting block 11, and the center positioning column 3 is installed inside the precision piston 2 through the mounting block 11.

[0023] See Figure 2 The utility model provides an airtight detection fixture. Second sealing rings 12 are provided on both sides of the mounting block 11 close to the precision piston 2. The second sealing rings 12 are symmetrically arranged up and down. By providing the second sealing ring 12, the sealing performance between the mounting block 11 and the precision piston 2 can be improved.

[0024] Working process of this utility model:

[0025] The utility model relates to an airtightness detection fixture. During operation, the air-tightness detection fixture inserts the inflation tube into the through hole 8 of the fixture, connects the air source to the inflation tube, and then gradually fills in air of a certain pressure. During the inflation process, the pressure change is observed. If the pressure gradually decreases, it indicates that there is an air leakage in the fixture. The whole process is automated and the detection efficiency is high, so that the airtightness performance of the fixture can be quickly detected, the production efficiency is improved, and the production cost is reduced. By setting the inner support chuck 4 and the precision chuck 5, when the user connects the pull tube on the hydraulic cylinder to the precision piston 2, the hydraulic cylinder is started, so that the pull tube of the hydraulic cylinder drives the precision piston 2 to move horizontally, and then the inner support chuck 4 and the precision chuck 5 move with the movement of the precision piston 2 under the action of the mounting block 11, and then the inner support chuck 4 and the precision chuck 5 are brought into contact with the inner hole of the workpiece and the workpiece is tightened, thereby achieving clamping and fixation.

[0026] The control method of the present invention is to manually start and stop the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field. Moreover, the present invention is mainly used to protect mechanical devices. Therefore, the control method and wiring arrangement are not explained in detail in the present invention.

[0027] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the scope of protection of the present invention.

Claims

1. An airtightness detection fixture, characterized by: The invention comprises an outer shell (1), a precision piston (2), a center positioning column (3), an inner support chuck (4), a precision chuck (5), a workpiece (6), and an airtightness detection point (7). The outer shell (1) is provided with a precision piston (2), a center positioning column (3) is provided inside one side of the precision piston (2), one end of the center positioning column (3) extends outward, an inner support chuck (4) and a precision chuck (5) are respectively attached to the outer wall of one end of the center positioning column (3), the inner support chuck (4) and the precision chuck (5) are symmetrically arranged in an upper and lower manner, the outer parts of the inner support chuck (4) and the precision chuck (5) are jointly tightened with a workpiece (6), and an airtightness detection point (7) is provided between the workpiece (6) and the center positioning column (3).

2. The airtightness detection fixture according to claim 1, characterized in that: A through hole (8) is provided at the inner center of the outer shell (1), and the through hole (8) passes through the interior of the precision piston (2) and the center positioning column (3) in sequence.

3. The airtightness detection fixture according to claim 1, characterized in that: Piston sealing rings (9) are provided on both sides of the precision piston (2) close to the outer shell (1), and the piston sealing rings (9) are symmetrically arranged in an upper and lower direction.

4. The airtightness detection fixture according to claim 1, characterized in that: First sealing rings (10) are further provided on both sides of the precision piston (2) close to the outer shell (1), and the first sealing rings (10) are symmetrically arranged in an upper and lower direction.

5. The airtightness detection fixture according to claim 1, characterized in that: A mounting block (11) is provided on the side wall of the precision piston (2), and the center positioning column (3) is mounted inside the precision piston (2) via the mounting block (11).

6. The airtightness detection fixture according to claim 5, characterized in that: Second sealing rings (12) are provided on both sides of the mounting block (11) close to the direction of the precision piston (2), and the second sealing rings (12) are symmetrically arranged in an upper and lower direction.

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