Ultra-thin cylindrical shell positioning device

Abstract

The utility model discloses a kind of ultra-thin cylindrical shell positioning devices, including support platform, the middle position of the support platform is fixed with stand, the outer side of the stand is evenly distributed with at least two columns of top support mechanism around its central axis;The top support mechanism includes U block, rotating shaft, rotating motor, swing bar and top block, the opening direction of the U block is towards outside, one end of the rotating shaft is rotatably connected with the inner wall of U block, the other end of the rotating shaft is connected with the output end of rotating motor, the swing bar is fixed on the outer side of rotating shaft, the top block is fixed in the end of the swing bar, the ultra-thin cylindrical shell positioning device solves the problem that thin-walled cylindrical shell is easily deformed when positioning in prior art, positioning precision is low, and applicability is poor, greatly improves the use convenience and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, specifically to an ultra-thin cylindrical shell positioning device. Background Technology

[0002] Ultra-thin cylindrical shells have wide applications in many fields such as aerospace, automobile manufacturing, and medical devices.

[0003] Due to its thin walls and poor rigidity, traditional positioning methods can easily cause deformation of thin-walled cylindrical shells during processing, inspection, or assembly, affecting the dimensional accuracy and surface quality of the product. For example, when existing positioning devices use rigid clamps to directly clamp and position the outer side of the thin-walled cylindrical shell, large local stress will be generated on the surface of the thin-walled cylindrical shell, causing shell deformation. This can easily damage the surface of the thin-walled cylindrical shell, make it difficult to adapt to shells of different specifications, and affect surface treatment operations such as polishing and grinding, thus failing to meet the production requirements of high precision and high quality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an ultra-thin cylindrical shell positioning device, which solves the problems of easy deformation, low positioning accuracy and poor applicability of thin-walled cylindrical shells in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an ultra-thin cylindrical shell positioning device, including a support platform, a column fixed at the middle position of the support platform, and at least two rows of top support mechanisms evenly distributed around the outer side of the column around its central axis.

[0006] The top support mechanism includes a U-shaped block, a rotating shaft, a rotary motor, a swing arm, and a top block. The opening of the U-shaped block faces outward. One end of the rotating shaft is rotatably connected to the inner wall of the U-shaped block, and the other end of the rotating shaft is connected to the output end of the rotary motor. The swing arm is fixed to the outer side of the rotating shaft, and the top block is fixed to the end of the swing arm.

[0007] As a preferred embodiment of this invention, the top block is made of hard rubber material.

[0008] As a preferred technical solution of this utility model, a driving mechanism is provided between the U-shaped block and the column. The driving mechanism controls the top support mechanism to tighten and fix the cylindrical shell with different inner diameters. The driving mechanism is a cylinder or an electric push rod.

[0009] As a preferred embodiment of this utility model, the outer side of the column is provided with a machining plane for mounting the drive mechanism.

[0010] As a preferred technical solution of this utility model, the top support mechanism is arranged in three groups around the central axis of the column, and each group is provided with at least two top support mechanisms arranged along the height direction of the column.

[0011] As a preferred embodiment of this utility model, a pressure sensor is provided at the tail end of the top block, and the pressure sensor is electrically connected to an external control system.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This ultra-thin cylindrical shell positioning device positions the ultra-thin cylindrical shell from the inside by setting a column at the upper end of the support platform and a top support mechanism on the outer side of the column. This prevents interference when the ultra-thin cylindrical shell is treated on the outer surface. Furthermore, the top block is oscillating by a rotary motor in the top support mechanism, and the ultimate friction between the top block and the ultra-thin cylindrical shell is used to position it, which will not damage the surface and ensures stable positioning, thus effectively improving product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is the front view of the present utility model;

[0015] Figure 3 for Figure 2 Top view;

[0016] Figure 4 This is a front sectional view of the present invention in the state of being pressed against the inner wall of the ultra-thin cylindrical shell.

[0017] In the diagram: 1 Support platform, 2 Column, 3 Machining plane, 4 Top support mechanism, 41 U-shaped block, 42 ​​Rotating shaft, 43 Rotary motor, 44 Swing rod, 45 Top block, 5 Drive mechanism. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments (for ease of description and understanding, hereinafter referred to as...). Figure 2 (The above is described above). Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Please see Figure 1-4This utility model provides a technical solution: an ultra-thin cylindrical shell positioning device, including a support platform 1, a column 2 fixed in the middle of the support platform 1, and at least two rows of top support mechanisms 4 evenly distributed around the outer side of the column 2 around its central axis.

[0020] The top support mechanism 4 includes a U-shaped block 41, a rotating shaft 42, a rotary motor 43, a rocker arm 44, and a top block 45. The opening of the U-shaped block 41 faces outward. One end of the rotating shaft 42 is rotatably connected to the inner wall of the U-shaped block 41, and the other end of the rotating shaft 42 is connected to the output end of the rotary motor 43. The rocker arm 44 is fixed to the outer side of the rotating shaft 42, and the top block 45 is fixed to the end of the rocker arm 44. The input end of the rotary motor 43 is electrically connected to the output end of an external control system, and the rotating shaft 42 is controlled by the rotary motor 43. The rotation causes the swing arm 44 and the top block 45 to rotate. Experiments show that when the tilt angle of the top block 45 is between 35° and 38°, the top block 45 generates friction with the inner wall of the ultra-thin cylindrical shell. The pressure exerted by the top block 45 on the inner wall of the cylinder does not exceed the deformation force of the ultra-thin cylindrical shell. The top block 45 is fixed by the friction between it and the inner wall of the ultra-thin cylindrical shell. The top block 45 swings downward and presses against the inner wall of the ultra-thin cylindrical shell, which increases the pressure of the ultra-thin cylindrical shell on the support platform 1 and ensures positioning stability.

[0021] To prevent the top block 45 from causing indentations on the inner wall of the ultra-thin cylindrical shell, the top block 45 is made of hard rubber material.

[0022] To increase the versatility of this positioning device, a drive mechanism 5 is provided between the U-shaped block 41 and the column 2. The drive mechanism 5 controls the top support mechanism 4 to tighten and fix the cylindrical shell with different inner diameters. The drive mechanism 5 is a cylinder or an electric push rod, and the input end of the cylinder or electric push rod is electrically connected to the output end of the external control system.

[0023] To facilitate the installation of the drive mechanism 5, the outer side of the column 2 is provided with a machining surface 3 for the installation of the drive mechanism 5.

[0024] Furthermore, in order to ensure the positioning accuracy of this positioning device, the top support mechanism 4 is arranged in three groups around the central axis of the column 2, and each group is provided with at least two top support mechanisms 4 arranged along the height direction of the column.

[0025] In order to control the pressure of the top block 45 on the inner wall of the ultra-thin cylindrical shell to not exceed the limit value of the deformation force of the inner wall of the shell, a pressure sensor is provided at the tail end of the top block 45, and the pressure sensor is electrically connected to the external control system.

[0026] In use: Place the ultra-thin cylindrical shell to be processed in the middle position of the support platform 1 and fit it on the outer side of the top support mechanism 4. In the initial state, the top block 45 is tilted upward. Then, according to the inner diameter of the ultra-thin cylindrical shell, the external control system controls the drive mechanism 5 to start and push the top support mechanism 4 to move horizontally a suitable distance. Then, turn on the rotary motor 43 to control the top block 45 to rotate downward until the top block 45 contacts the inner wall of the ultra-thin cylindrical shell. According to the pressure signal transmitted by the pressure sensor, gradually increase the friction between the top block 45 and the inner wall of the ultra-thin cylindrical shell, and make the friction not exceed the deformation force of the ultra-thin cylindrical shell. Then, turn off the rotary motor 43.

[0027] This invention can not affect the surface processing of ultra-thin cylindrical shells when positioning them, and will not cause pressure deformation, thus meeting the requirements of high-quality and high-precision processing and greatly improving the ease of use.

[0028] The parts of the utility model not described in detail are prior art. Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning device for an ultra-thin cylindrical shell, comprising a support platform (1), characterized in that: A column (2) is fixed in the middle of the support platform (1), and at least two rows of top support mechanisms (4) are evenly distributed on the outer side of the column (2) around its central axis. The top support mechanism (4) includes a U-shaped block (41), a rotating shaft (42), a rotary motor (43), a swing rod (44), and a top block (45). The opening of the U-shaped block (41) faces outward. One end of the rotating shaft (42) is rotatably connected to the inner wall of the U-shaped block (41), and the other end of the rotating shaft (42) is connected to the output end of the rotary motor (43). The swing rod (44) is fixed on the outer side of the rotating shaft (42), and the top block (45) is fixed to the end of the swing rod (44).

2. The ultra-thin cylindrical shell positioning device according to claim 1, characterized in that: The top block (45) is made of hard rubber material.

3. The ultra-thin cylindrical shell positioning device according to claim 1, characterized in that: A drive mechanism (5) is provided between the U-shaped block (41) and the column (2). The drive mechanism (5) controls the top support mechanism (4) to tighten and fix the cylindrical shell with different inner diameters. The drive mechanism (5) is a cylinder or an electric push rod.

4. The ultra-thin cylindrical shell positioning device according to claim 3, characterized in that: The outer side of the column (2) is provided with a machining surface (3) for mounting the drive mechanism (5).

5. The ultra-thin cylindrical shell positioning device according to claim 1, characterized in that: The top support mechanism (4) is arranged in three groups around the central axis of the column (2), and each group is provided with at least two top support mechanisms (4) arranged along the height direction of the column.

6. The ultra-thin cylindrical shell positioning device according to claim 1, characterized in that: A pressure sensor is provided at the tail end of the top block (45), and the pressure sensor is electrically connected to an external control system.

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