Positioning and clamping device for detecting gun barrel

Abstract

The utility model discloses a positioning and clamping device for detecting a gun barrel and a using method of the positioning and clamping device, and belongs to the technical field of firearm clamps, the positioning and clamping device comprises a supporting piece, a driving assembly, a clamping assembly, a flange and a piece to be detected, and the supporting piece used for supporting the positioning and clamping device is installed on an equipment base through a first adjusting bolt; the driving assembly is installed on the supporting piece through a second adjusting bolt, the clamping assembly is connected with the driving assembly through a flange, a cavity is formed between the clamping assembly and the flange, a to-be-tested piece can penetrate through the cavity conveniently, the to-be-tested piece is clamped and fixed through the clamping assembly, and the to-be-tested piece penetrates through the center of the clamping assembly and the center of the flange. And the contact component contacts with the driving component. The clamping surface of the pneumatic chuck is long, automatic centering can be guaranteed when a workpiece is clamped, the pneumatic chuck is perpendicular to the mounting surface, the DD motor is high in precision and high in response speed, reliable clamping of the gun barrel is achieved, and the gun barrel can be replaced conveniently and quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of firearm clamps, in particular to a positioning clamping device for detecting gun barrels. Background Art

[0002] The barrel is one of the main components of a firearm. It is usually made of a heat-resistant and non-deformable metal tube and is connected to the chamber. When the bullet is fired, the expanding gas generated by the explosion of gunpowder or air pressure, or other power, will push the bullet through the barrel and finally become a high-speed projectile that is shot out.

[0003] Rifling (English: Rifling, also translated as "rifling") is a spirally distributed groove forged and processed on the inner wall of the barrel of a modern gun barrel. It can make the bullet rotate along the longitudinal axis of the rifling when fired, producing a gyroscopic effect to stabilize the trajectory, so that it can be fired at the target more accurately. The hollow part of the rifling is called the groove (called the valley in polygonal rifling), and the raised part is called the land (called the hill in polygonal rifling). The written caliber of a gun usually refers to the distance between a land and another land opposite it, so the diameter of the bullet head is usually larger than the caliber of the gun.

[0004] When inspecting a gun barrel, it is necessary to measure multiple sets of data, such as the diameter of the negative line and the positive line of the gun barrel, so that the processed gun barrel meets the required standards. However, the positioning effect of the existing inspection fixtures for gun barrels is poor, and it is easy to miss the inspection. In addition, during the inspection process, there are higher requirements for the position and verticality of the gun barrel. The existing fixtures cannot meet the various requirements of the gun barrel during the inspection process. Therefore, how to achieve reliable clamping and positioning of the gun barrel, and how to quickly and conveniently replace the gun barrel have become technical problems that need to be solved urgently in this technical field. Utility Model Content

[0005] In view of the defects in the prior art, the utility model provides a positioning clamping device for detecting a gun barrel.

[0006] The present application provides a positioning and clamping device for detecting a gun barrel, comprising:

[0007] A support member, a driving assembly, a clamping assembly, a flange, and a piece to be tested, wherein the support member for supporting the positioning clamping device is installed on the equipment base through a first adjusting bolt, the driving assembly is installed on the support member through a second adjusting bolt, the clamping assembly is connected to the driving assembly through a flange, a cavity is provided between the clamping assembly and the flange to facilitate the passage of the piece to be tested, and the piece to be tested is clamped and fixed by the clamping assembly, and the piece to be tested passes through the center of the clamping assembly and the flange and contacts the driving assembly.

[0008] Further, the clamping component includes a pneumatic chuck, a pneumatic chuck body, and a chuck base. The pneumatic chuck is arranged on the pneumatic chuck body, and the pneumatic chuck body is installed on the chuck base. The chuck base is connected to the flange through a third adjusting bolt.

[0009] Further, the centering accuracy of the pneumatic chuck is <2μm, the rotational accuracy of the clamping surface is <2μm, and the clamping range Φ is 15.225 - 16.125.

[0010] Further, the support member is a hollow cylindrical shape, with holes provided on both the upper and lower sides to facilitate the cables of the driving component to pass through the two holes respectively and connect to external devices.

[0011] Further, the flange is fixed to the driving component through a fourth adjusting bolt.

[0012] Further, the driving component is a DD motor.

[0013] Further, the axial and radial accuracy of the DD motor is 2μm, the absolute encoder is 30rpm, the repeat positioning accuracy is ±0.5 arc-sec, and the repeat absolute positioning accuracy is ±10 arc-sec.

[0014] The beneficial effects achieved by the present utility model:

[0015] The positioning and clamping device for detecting gun barrels provided by the present utility model uses a pneumatic chuck with a long clamping surface, which can ensure automatic centering when clamping the workpiece and be perpendicular to the mounting surface. The DD motor has high precision and fast response speed, realizing reliable clamping of the gun barrel and facilitating quick replacement of the gun barrel. Description of the Drawings

[0016] Figure 1 is a cross-sectional view of the positioning and clamping device for detecting gun barrels of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the positioning and clamping device for detecting gun barrels of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the support member of the present utility model;

[0019] Figure 4 is a structural schematic diagram of the driving component of the present utility model;

[0020] Figure 5 is a structural schematic diagram of the clamping component of the present utility model.

[0021] Reference Signs:

[0022] 1. Support member; 2. Driving assembly; 3. Clamping assembly; 31. Pneumatic chuck; 32. Pneumatic chuck; 33. Chuck base; 4. Flange; 5. Component to be measured; 6. First adjusting bolt; 7. Second adjusting bolt; 8. Third adjusting bolt; 9. Fourth adjusting bolt.

[0023] The attached drawings are only for illustrative purposes and should not be construed as limiting the present patent; for better illustration of this embodiment, some components in the attached drawings will be omitted, enlarged or reduced, which does not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted; the same or similar reference numerals correspond to the same or similar components; the terms describing the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as limiting the present patent. Detailed implementation manners

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of the technical solutions appears to be mutually contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0025] The technical solutions of the present utility model will be introduced and described in detail below with reference to the specific attached drawings.

[0026] Embodiment 1:

[0027] As Figure 1 shown, a positioning and clamping device for detecting gun barrels includes:

[0028] A support member 1, a driving assembly 2, a clamping assembly 3, a flange 4, and a component to be measured 5. Among them, the support member 1 for supporting the positioning and clamping device is installed on the equipment base through the first adjusting bolt 6, the driving assembly 2 is installed on the support member 1 through the second adjusting bolt 7, the clamping assembly 3 is connected to the driving assembly 2 through the flange 4, a cavity is provided between the clamping assembly 3 and the flange 4 to facilitate the component to be measured 5 to pass through, and the component to be measured 5 is clamped and fixed by the clamping assembly 3. The component to be measured 5 passes through the centers of the clamping assembly 3 and the flange 4 and contacts the driving assembly 2.

[0029] In a specific embodiment, the clamping component 3 includes a pneumatic chuck 31, a pneumatic chuck plate 32, and a chuck base 33. The pneumatic chuck 31 is arranged on the pneumatic chuck plate 32, the pneumatic chuck plate 32 is installed on the chuck base 33, and the chuck base 33 is connected to the flange 4 through a third adjusting bolt 8.

[0030] In a specific embodiment, the centering accuracy of the pneumatic chuck 31 is <2μm, the rotational accuracy of the clamping surface is <2μm, and the clamping range Φ is 15.225 - 16.125.

[0031] In a specific embodiment, the support member 1 is in the shape of a hollow cylinder, and holes are provided on both the upper and lower sides to facilitate the cables of the driving component 2 to pass through the two holes respectively to connect to external devices.

[0032] In a specific embodiment, the flange 4 is fixed to the driving component 2 through a fourth adjusting bolt 9.

[0033] In a specific embodiment, the driving component is a DD motor.

[0034] In a specific embodiment, the axial and radial accuracy of the DD motor is 2μm, the absolute encoder is 30rpm, the repeat positioning accuracy is ±0.5 arc-sec, and the repeat absolute positioning accuracy is ±10 arc-sec.

[0035] A method for using a positioning and clamping device for detecting gun barrels includes the following steps:

[0036] Step 1: After assembling the positioning and clamping device as described above, wipe the bottom of the support member clean and install it on the equipment base.

[0037] Step 2: First, insert a measuring bar, calibrate the clamping component with the measuring bar, use a dial indicator to measure the total runout of the cylindrical surface and the upper end surface of the measuring bar respectively, and adjust the clamping component to meet the design requirements.

[0038] Step 3: After all parameters reach the established standards and the equipment runs stably for 5 minutes, then measure the gun barrel.

[0039] Step 4: During the measurement process, the measuring instrument moves down close to the gun barrel, the DD motor rotates and stops according to the set program, the measuring instrument measures the workpiece according to the set measurement program, then the data is transmitted to the central processor, the measured data is displayed on the display, and finally the processor compares the standard value to determine the measured result.

[0040] Step 5: When the equipment runs continuously for 2 hours, it is necessary to use the measuring bar to recalibrate and zero.

[0041] The serial numbers of the embodiments of the present application above are only for description and do not represent the superiority or inferiority of the embodiments. The above are only the preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A positioning and clamping device for detecting gun barrels, characterized in that, Comprising: A support member (1), a driving assembly (2), a clamping assembly (3), a flange (4), and a component under test (5). Among them, the support member (1) for supporting and positioning the clamping device is installed on the equipment base through a first adjusting bolt (6). The driving assembly (2) is installed on the support member (1) through a second adjusting bolt (7). The clamping assembly (3) is connected to the driving assembly (2) through the flange (4). A cavity is provided between the clamping assembly (3) and the flange (4) to facilitate the component under test (5) to pass through, and the component under test (5) is clamped and fixed by the clamping assembly (3). The component under test (5) passes through the centers of the clamping assembly (3) and the flange (4) and contacts the driving assembly (2).

2. The positioning and clamping device for detecting gun barrels according to claim 1, characterized in that, The clamping assembly (3) includes a pneumatic chuck (31), a pneumatic chuck (32), and a chuck base (33). The pneumatic chuck (31) is arranged on the pneumatic chuck (32), and the pneumatic chuck (32) is installed on the chuck base (33). The chuck base (33) is connected to the flange (4) through a third adjusting bolt (8).

3. The positioning and clamping device for detecting gun barrels according to claim 2, characterized in that, The centering accuracy of the pneumatic chuck (31) is <2μm, the rotational accuracy of the clamping surface is <2μm, and the clamping range Φ is 15.225 - 16.

125.

4. A positioning and clamping device for detecting gun barrels according to claim 1, characterized in that, The support member (1) is in the shape of a hollow cylinder, and holes are provided on both the upper and lower sides to facilitate the cables of the driving assembly (2) to pass through the two holes respectively to connect external devices.

5. The positioning and clamping device for detecting gun barrels according to claim 1, characterized in that, The flange (4) is fixed on the driving assembly (2) through a fourth adjusting bolt (9).

6. The positioning and clamping device for detecting gun barrels according to claim 1, characterized in that, The driving assembly is a DD motor.

7. The positioning and clamping device for detecting gun barrels according to claim 6, characterized in that, The axial and radial accuracy of the DD motor is 2μm, the absolute encoder is 30rpm, the repeat positioning accuracy is ±0.5 arc-sec, and the repeat absolute positioning accuracy is ±10 arc-sec.

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