Full-automatic pneumatic clamp for bone nail drilling and milling

Abstract

The utility model discloses a full-automatic pneumatic clamp for drilling and milling a bone nail, and relates to the field of machining of mechanical parts. The supporting plate is connected with the servo motor; the fixing plate is arranged below the supporting plate and connected with the output end of the servo motor. The telescopic cylinder is arranged at the bottom of the connecting plate; the two connecting plates are arranged at the bottom of the fixing plate and symmetrically arranged on the two sides of the telescopic air cylinder. The upper end of the connecting rod is connected with the output end of the telescopic cylinder; the disc is connected with the two connecting plates; the clamping seat is arranged at the bottom of the connecting rod; the three rotating grooves are evenly formed in the periphery of the clamping base at equal intervals. The clamping rods are uniformly arranged at the bottom of the disc; the upper ends of the clamping arms are rotationally connected with the inner walls of the two clamping rods, and movable grooves are formed in the middle ends of the clamping arms; the two ends of the three movable blocks are rotationally connected with the two sides of the inner walls of the rotating groove and the movable groove through rotating shafts correspondingly. According to the scheme, automatic fixing of the bone nail is achieved, the response speed is high, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the field of mechanical parts processing, in particular to a fully automatic pneumatic clamp for drilling and milling bone nails. Background Art

[0002] Bone nails are non-active surgical metal implants for bone joining. They are composed of cortical bone nails and cancellous bone nails. They are used to stabilize new fractures, revision surgery, joint fusion, and reconstruction of small bones in the foot, ankle, and toes. They can be used for both adult and pediatric patients. Pneumatic clamps usually consist of components such as cylinders, clamp arms, and control valves. The clamping force is adjusted by controlling the air pressure of the cylinder to adapt to workpieces of different shapes and sizes. Pneumatic clamps have the advantages of large clamping force, fast response speed, and easy operation. They are suitable for various processing occasions. In drilling and milling, the correct selection and use of pneumatic clamps can improve processing efficiency, ensure processing quality, and reduce labor costs and labor intensity.

[0003] In an existing pneumatic clamp for drilling and milling bone screws, fixation and clamping are performed through manual adjustment, which is inefficient and complicated to operate. Therefore, it is urgent to design a fully automatic pneumatic clamp for drilling and milling bone screws to solve the above problems. Utility Model Content

[0004] In order to solve the above technical problems, a fully automatic pneumatic clamp for drilling and milling bone screws is provided. This technical solution solves the problem of low efficiency and complicated operation of fixing and clamping by manual adjustment proposed in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A fully automatic pneumatic fixture for drilling and milling bone screws, comprising:

[0007] The servo motor is fixedly mounted on the upper end of the support plate to provide rotational power, thereby rotating the fixture;

[0008] Support plate, fixedly mounted on the external frame;

[0009] A fixing plate, which is arranged below the supporting plate and fixedly connected to the output end of the servo motor;

[0010] A telescopic cylinder is fixedly mounted on the bottom of the fixed plate;

[0011] Connecting plates, the number of the connecting plates is two, the two connecting plates are fixedly connected to the bottom of the fixed plate, and the two connecting plates are symmetrically arranged on both sides of the telescopic cylinder;

[0012] A connecting rod, the upper end of which is fixedly connected to the output end of the telescopic cylinder;

[0013] A disc, the top of which is fixedly connected to the bottoms of the two connecting plates;

[0014] A clamping seat, fixedly connected to the bottom of the connecting rod;

[0015] Rotation grooves, the number of which is three, and the three rotation grooves are evenly and equidistantly arranged on the outer side of the clamping seat in an annular shape;

[0016] Clamping rods, the number of the clamping rods is three pairs, and the three pairs of clamping rods are evenly and equidistantly arranged at the bottom of the disc in a ring shape;

[0017] A clamping arm, the upper end of which is rotatably connected to the inner walls of the two clamping rods, and a movable groove is provided at the middle end of the clamping arm;

[0018] The movable blocks are three in number, the upper ends of the three movable blocks are arranged inside the rotating groove and are rotatably connected to the clamping seat, and the lower ends of the movable blocks are arranged inside the movable groove and are rotatably connected to the clamping arm through a rotating shaft.

[0019] Furthermore, the output end of the servo motor passes through the top of the support plate and is fixedly connected to the top of the fixing plate.

[0020] Furthermore, the number of the clamping arms is three, and the upper ends of the three clamping arms are respectively arranged between three pairs of clamping rods.

[0021] Furthermore, the surface of the connecting rod is movably connected to the disc, and the lower end of the connecting rod passes through the middle of the top end of the disc.

[0022] As the preferred technical solution of the utility model, compared with the prior art, the utility model provides a fully automatic pneumatic clamp for drilling and milling bone nails, which has the following beneficial effects:

[0023] In the utility model, the connecting rod is stretched by the telescopic cylinder, thereby stretching the clamping seat to move, and then the clamping arm is pulled to move by the movable block to achieve automatic fixation of the bone screw. At the same time, the servo motor can control the rotation of the fixing plate, thereby controlling the rotation of the entire clamp. The device has a simple structure, easy operation and fast response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a front view structural schematic diagram of the utility model;

[0026] Figure 3 It is a schematic diagram of the lateral side structure of the utility model.

[0027] The numbers in the figure are:

[0028] 1. Servo motor; 2. Support plate; 3. Fixed plate; 4. Telescopic cylinder; 5. Disc; 6. Connecting plate; 7. Clamping rod; 8. Rotating shaft; 9. Clamping arm; 10. Clamping seat; 11. Rotating groove; 12. Connecting rod; 13. Movable block; 14. Movable groove. DETAILED DESCRIPTION

[0029] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0030] Reference Figure 1-3 As shown, a fully automatic pneumatic fixture for drilling and milling bone screws comprises:

[0031] The servo motor 1 is fixedly mounted on the upper end of the support plate 2 to provide rotational power, thereby rotating the fixture and cooperating with the cutter head to complete the drilling and milling process;

[0032] Support plate 2, fixedly mounted on the external frame;

[0033] A fixing plate 3, which is disposed below the supporting plate 2 and fixedly connected to the output end of the servo motor 1;

[0034] The telescopic cylinder 4 is fixedly mounted on the bottom of the fixed plate 3;

[0035] Connecting plates 6, the number of connecting plates 6 is two, the two connecting plates 6 are fixedly connected to the bottom of the fixed plate 3, and the two connecting plates 6 are symmetrically arranged on both sides of the telescopic cylinder 4;

[0036] A connecting rod 12, the upper end of which is fixedly connected to the output end of the telescopic cylinder 4;

[0037] A disc 5, the top of which is fixedly connected to the bottoms of two connecting plates 6;

[0038] The clamping seat 10 is fixedly connected to the bottom of the connecting rod 12;

[0039] When in use, the telescopic cylinder 4 is fixed by the fixing plate 3, and the fixing plate 3 is fixed to the disc 5 by the connecting plate 6, and then the connecting rod 12 is controlled to move by the telescopic cylinder 4, thereby pulling the clamping seat 10 to move.

[0040] Rotation grooves 11, the number of which is three, and the three rotation grooves 11 are evenly and equidistantly arranged on the outer side of the clamping seat 10 in an annular shape;

[0041] Clamping rods 7, the number of the clamping rods 7 is three pairs, and the three pairs of clamping rods 7 are evenly and equidistantly arranged at the bottom of the disc 5 in a ring shape;

[0042] A clamping arm 9, the upper end of which is rotatably connected to the inner walls of the two clamping rods 7 via a rotating shaft 8, and a movable groove 14 is provided at the middle end of the clamping arm 9;

[0043] The movable block 13 is three in number, the upper ends of the three movable blocks 13 are arranged inside the rotating groove 11 and are rotatably connected to the clamping seat 10, the lower ends of the movable blocks 13 are arranged inside the movable groove 14 and are rotatably connected to the clamping arm 9 through the rotating shaft 8, the clamping arm 9 and the clamping seat 10 are movably connected through the movable blocks 13, and when in use, the clamping seat 10 is controlled to move, and then the clamping arm 9 is driven to move through the movable blocks 13, thereby completing the fixation of the workpiece.

[0044] In another embodiment provided by the present utility model, Figure 1 As shown, the output end of the servo motor 1 passes through the top of the support plate 2 and is fixedly connected to the top of the fixing plate 3 .

[0045] In another embodiment provided by the present utility model, Figure 1 As shown, there are three clamping arms 9, and the upper ends of the three clamping arms 9 are respectively arranged between three pairs of clamping rods 7, and the upper ends of the three clamping arms 9 are rotatably connected to the three pairs of clamping rods 7 through rotating shafts 8, so that the clamping arms 9 can rotate with the rotating shaft 8 as a fulcrum to complete the fixation of the workpiece.

[0046] In another embodiment provided by the present utility model, Figure 1 As shown, the surface of the connecting rod 12 is movably connected to the disc 5 , and the lower end of the connecting rod 12 passes through the middle of the top end of the disc 5 .

[0047] Working principle: In the utility model, the servo motor 1 is used to control the rotation of the fixed plate 3, thereby rotating the fixture, and the inner end of the movable block 13 is rotatably connected to the clamping seat 10 through the rotating shaft 8, and the outer end of the movable block 13 is rotatably connected to the middle part of the clamping arm 9. The upper end of the clamping arm 9 is rotatably connected to the connecting rod 12 through the rotating shaft 8. The telescopic cylinder 4 is fixed by the fixed plate 3, and the fixed plate 3 is fixed to the disc 5 by the connecting plate 6. Then, the connecting rod 12 is controlled to move by the telescopic cylinder 4, and then the clamping seat 10 is pulled to move, and then the clamping arm 9 is pulled to move by the movable block 13, thereby completing the automatic clamping and fixing of the workpiece, and the tool head can complete the drilling and milling processing with the cooperation of the processing.

[0048] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fully automatic pneumatic fixture for drilling and milling bone screws, characterized in that: include: A servo motor (1) is fixedly mounted on the upper end of the support plate (2) to provide rotational power, thereby rotating the fixture; A support plate (2) is fixedly mounted on the external frame; A fixing plate (3), the fixing plate (3) being arranged below the supporting plate (2) and fixedly connected to an output end of the servo motor (1); A telescopic cylinder (4) is fixedly mounted on the bottom of the fixed plate (3); A connecting plate (6), wherein the number of the connecting plates (6) is two, the two connecting plates (6) are fixedly connected to the bottom of the fixing plate (3), and the two connecting plates (6) are symmetrically arranged on both sides of the telescopic cylinder (4); A connecting rod (12), the upper end of which is fixedly connected to the output end of the telescopic cylinder (4); A disc (5), the top of which is fixedly connected to the bottoms of two connecting plates (6); A clamping seat (10) fixedly connected to the bottom of the connecting rod (12); Rotation grooves (11), the number of the rotation grooves (11) is three, and the three rotation grooves (11) are arranged in an annular shape and are evenly and equidistantly arranged on the outer side of the clamping seat (10); Clamping rods (7), the number of the clamping rods (7) is three pairs, and the three pairs of clamping rods (7) are evenly and equidistantly arranged at the bottom of the disc (5) in a ring shape; A clamping arm (9), the upper end of which is rotatably connected to the inner walls of the two clamping rods (7), and a movable groove (14) is provided at the middle end of the clamping arm (9); The movable blocks (13) are three in number, the upper ends of the three movable blocks (13) are arranged inside the rotating groove (11) and are rotatably connected to the clamping seat (10), and the lower ends of the movable blocks (13) are arranged inside the movable groove (14) and are rotatably connected to the clamping arm (9) via the rotating shaft (8).

2. The fully automatic pneumatic fixture for drilling and milling bone screws according to claim 1, characterized in that: The output end of the servo motor (1) passes through the top of the support plate (2) and is fixedly connected to the top of the fixing plate (3).

3. The fully automatic pneumatic fixture for drilling and milling bone screws according to claim 1, characterized in that: The number of the clamping arms (9) is three, and the upper ends of the three clamping arms (9) are respectively arranged between three pairs of clamping rods (7).

4. The fully automatic pneumatic fixture for drilling and milling bone screws according to claim 1, characterized in that: The surface of the connecting rod (12) is movably connected to the disc (5), and the lower end of the connecting rod (12) passes through the middle of the top end of the disc (5).

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