External expansion positioning clamping device

Abstract

The external expansion positioning clamping device comprises a shell of a cuboid structure, a first round opening is formed in the outer wall of the top of the shell, a sleeve is fixedly connected to the outer wall of the top of the shell and is of a conical structure, and an auxiliary assembly is slidably installed on the outer wall of the top of the sleeve; and the same piston assembly is arranged on the inner walls of the auxiliary assembly, the sleeve and the shell. According to the positioning and clamping device, the two positioning claws are arranged in the auxiliary assembly, a workpiece is conveniently clamped when the positioning claws are unfolded, meanwhile, a protrusion is arranged at one end of each positioning claw, the workpiece is conveniently pressed, the situation that the workpiece jumps during machining is effectively avoided, and the problem that an existing positioning and clamping device cannot conveniently clamp the workpiece is solved.

Description

Technical Field

[0001] This application relates to the field of clamps, and more particularly to external expansion positioning clamps. Background Technology

[0002] A positioning clamp is a clamping device used in automated equipment and production lines. It is mainly used to fix workpieces during handling and processing, ensuring their stability and accuracy during operation.

[0003] In the machining process, some circular parts need to be positioned. However, existing positioners, which clamp and position the parts externally, can easily affect the machining accuracy of the workpiece. At the same time, the workpiece may jump during the machining process. Utility Model Content

[0004] To address the problem of inconvenient positioning and clamping during the machining of circular workpieces, this application provides an external expansion positioning clamp.

[0005] The external expansion positioning clamp provided in this application adopts the following technical solution:

[0006] An external expansion positioning clamp includes a rectangular shell with a circular opening on the top outer wall. A sleeve is fixedly connected to the top outer wall of the shell. The sleeve has a conical structure, and an auxiliary component is slidably installed on the top outer wall of the sleeve. The auxiliary component, the sleeve, and the inner wall of the shell are provided with the same piston assembly.

[0007] By adopting the above technical solution, the outer shell facilitates the installation of the sleeve, the auxiliary components on the sleeve facilitate the clamping of the workpiece, and the piston assembly facilitates the adjustment of the auxiliary components.

[0008] Preferably, the auxiliary component includes a tapered column slidably connected to the sleeve, and the outer wall of the bottom of the tapered column is provided with an installation groove.

[0009] By adopting the above technical solution, the conical column can be easily slidably installed through the sleeve.

[0010] Preferably, the inner wall of the mounting groove has two symmetrically arranged arc-shaped openings, and the inner walls of both arc-shaped openings are rotatably connected to positioning claws.

[0011] By adopting the above technical solution, the positioning claw can be easily installed through the arc-shaped opening on the mounting slot, and the positioning claw can be used to clamp and fix the workpiece.

[0012] Preferably, the piston assembly includes a piston slidably connected to the inner wall of the housing, and a piston rod is fixedly connected to the outer wall of the top of the piston.

[0013] By adopting the above technical solution, the piston can be easily slidably installed by the outer shell, and the piston rod can be easily slid directly when the piston slides.

[0014] Preferably, the outer wall of the piston rod has two symmetrically arranged notches, and the outer walls of the two positioning claws on opposite sides respectively contact the inner walls of the two notches.

[0015] By adopting the above technical solution, the two notched wedge-shaped structures on the piston rod have a gradually changing size, thereby enabling the two positioning claws to move when the piston rod moves downward.

[0016] Preferably, one side of the outer wall of the outer shell is provided with an air hole one and an air hole two, and both air holes one and two are connected to the inner wall of the outer shell.

[0017] By adopting the above technical solution, the cooperation between air hole one and air hole two facilitates the sliding of the piston in the outer shell, thereby driving the piston rod to adjust the positioning claw.

[0018] Preferably, one side of the outer wall of the outer shell is provided with three air holes, and the three air holes are connected to the first round opening. A bottom cover is fixedly connected to the bottom outer wall of the outer shell.

[0019] By adopting the above technical solution, the setting of air hole three facilitates the air blowing and cleaning of the clamp during ventilation.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application uses two positioning claws in the auxiliary component. When the positioning claws are unfolded, they can easily clamp the workpiece. At the same time, one end of the positioning claw is provided with a protrusion to make it easy to press the workpiece, which can effectively prevent the workpiece from jumping during processing and solve the problem that existing positioning clamping devices are inconvenient to clamp the workpiece.

[0022] 2. This application provides a piston assembly within the housing, and the cooperation between the piston assembly and the housing facilitates the driving of the two positioning claws, thereby making it convenient to position and clamp the workpiece. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the external expansion positioning clamp in the embodiment of this application;

[0024] Figure 2 This is a schematic diagram illustrating the main cross-sectional structure of the embodiments of this application;

[0025] Figure 3 This is a schematic diagram illustrating the piston assembly structure, representing a key embodiment of this application.

[0026] Figure 4This is a schematic diagram illustrating the positioning claw structure, which is the main feature of this application embodiment.

[0027] Figure 5 This is a schematic diagram illustrating the conical column structure, which is the main feature of this application.

[0028] Reference numerals: 1. Outer shell; 2. Sleeve; 3. Auxiliary component; 4. Air hole one; 5. Air hole two; 6. Air hole three; 7. Bottom cover; 8. Piston assembly; 9. Conical column; 10. Mounting groove; 11. Positioning claw; 12. Piston; 13. Piston rod; 14. Notch; 15. Arc-shaped opening. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0030] This application discloses an external expansion positioning clamp.

[0031] Reference Figure 1-3 The external expansion positioning clamp includes a rectangular shell 1. The top outer wall of the shell 1 has a circular opening. A sleeve 2 is fixedly connected to the top outer wall of the shell 1. The sleeve 2 has a conical structure, and an auxiliary component 3 is slidably installed on the top outer wall of the sleeve 2. The auxiliary component 3, the sleeve 2, and the inner wall of the shell 1 are provided with the same piston assembly 8.

[0032] In use, the outer casing 1 facilitates the installation of the sleeve 2, the auxiliary component 3 on the sleeve 2 facilitates the clamping of the workpiece, and the piston assembly 8 facilitates the adjustment of the auxiliary component 3.

[0033] Reference Figure 3-5 The auxiliary component 3 includes a tapered column 9 slidably connected to the sleeve 2, and an installation groove 10 is provided on the outer wall of the bottom of the tapered column 9. The inner wall of the installation groove 10 has two symmetrically arranged arc-shaped openings 15, and the inner walls of the two arc-shaped openings 15 are rotatably connected to positioning claws 11. The sleeve 2 facilitates the sliding installation of the tapered column 9, and the arc-shaped openings 15 on the installation groove 10 facilitate the installation of the positioning claws 11. The positioning claws 11 facilitate the clamping and fixing of the workpiece.

[0034] Reference Figure 2-4 The piston assembly 8 includes a piston 12 slidably connected to the inner wall of the housing 1, and a piston rod 13 is fixedly connected to the top outer wall of the piston 12. The outer wall of the piston rod 13 has two symmetrically arranged notches. The outer walls of the two positioning claws 11 on opposite sides contact the inner walls of the two notches respectively. The housing 1 facilitates the sliding installation of the piston 12. When the piston 12 slides, it can directly drive the piston rod 13 to slide. The two notches on the piston rod 13 have a wedge-shaped structure with a gradually changing size, so that when the piston rod 13 moves down, it drives the two positioning claws 11 to move.

[0035] Reference Figure 1-2 The outer wall of the outer shell 1 is provided with air hole 4 and air hole 5 on one side, and both air hole 4 and air hole 5 are connected to the inner wall of the outer shell 1. The cooperation between air hole 4 and air hole 5 facilitates the sliding of the piston 12 in the outer shell 1, thereby driving the piston rod 13 to adjust the positioning claw 11. The outer wall of the outer shell 1 is provided with air hole 6 on one side, and air hole 6 is connected to the round opening 1. The bottom outer wall of the outer shell 1 is fixedly connected to the bottom cover 7. The setting of air hole 6 facilitates the air blowing and cleaning of the clamp during ventilation.

[0036] The implementation principle of the external expansion positioning clamp in this application embodiment is as follows: When in use, the air pipe is connected to the three air holes respectively. When positioning and clamping, the workpiece is first sleeved on the outer wall of the conical column 9. Air is injected into the outer shell 1 through the second air hole 5. At this time, the air pressure pushes the piston 12 to move down. When the piston 12 moves down, it pulls the piston rod 13 down. At this time, the piston rod 13 pushes one end of the positioning claw 11 to extend and tighten the workpiece. At the same time, the piston rod 13 continues to slide down, driving the conical column 9 down, so as to facilitate the cooperation with the protrusion on the positioning claw 11 to press the workpiece tightly, effectively avoiding the workpiece jumping during the clamping process. When the workpiece is released, the first air hole 4 delivers gas to push the piston rod 13 up.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An externally expanding positioning clamp, comprising a rectangular parallelepiped shell (1), characterized in that: The outer wall of the outer shell (1) has a circular opening. A sleeve (2) is fixedly connected to the outer wall of the outer shell (1). The sleeve (2) has a conical structure and an auxiliary component (3) is slidably installed on the outer wall of the top of the sleeve (2). The auxiliary component (3), the sleeve (2) and the inner wall of the outer shell (1) are provided with the same piston assembly (8).

2. The external expansion positioning clamp according to claim 1, characterized in that: The auxiliary component (3) includes a tapered column (9) that is slidably connected to the sleeve (2), and the bottom outer wall of the tapered column (9) is provided with an installation groove (10).

3. The external expansion positioning clamp according to claim 2, characterized in that: The inner wall of the mounting groove (10) has two symmetrically arranged arc-shaped openings (15), and the inner walls of the two arc-shaped openings (15) are rotatably connected with positioning claws (11).

4. The external expansion positioning clamp according to claim 3, characterized in that: The piston assembly (8) includes a piston (12) slidably connected to the inner wall of the housing (1), and a piston rod (13) is fixedly connected to the top outer wall of the piston (12).

5. The external expansion positioning clamp according to claim 4, characterized in that: The piston rod (13) has two symmetrically arranged notches (14) on its outer wall, and the outer walls of the two positioning claws (11) on opposite sides are in contact with the inner walls of the two notches (14).

6. The external expansion positioning clamp according to claim 5, characterized in that: The outer wall of the outer shell (1) is provided with an air hole 1 (4) and an air hole 2 (5) on one side, and the air hole 1 (4) and the air hole 2 (5) are connected to the inner wall of the outer shell (1).

7. The external expansion positioning clamp according to claim 6, characterized in that: The outer wall of the outer shell (1) is provided with a three-hole (6) and the three-hole (6) is connected to the round opening. The bottom outer wall of the outer shell (1) is fixedly connected with a bottom cover (7).

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