Angle-adjustable precise drilling positioning clamp

Abstract

The utility model discloses an angle-adjustable precise drilling positioning fixture, which relates to the technical field of fixtures, and comprises an angle adjusting mechanism, the angle adjusting mechanism comprises a mounting base, the top of the mounting base is fixedly connected with a first rotating part, and the interior of the first rotating part is rotatably connected with a second rotating part; and the height adjusting mechanism comprises a second air cylinder. Through the arrangement of the angle adjusting mechanism and the cooperation of the first rotating piece and the second rotating piece, basic angle rotation can be achieved, multi-dimensional angle fine adjustment can be conducted on the adjusting table in combination with linkage of the first air cylinder and the universal joint, the limitation of single plane adjustment of a traditional clamp is broken through, and the multi-angle drilling requirement of a complex curved surface workpiece is met; and the height adjusting mechanism is combined with a first guide rod through a second air cylinder, so that the vertical height of the placing table is accurately controlled, and the height of the clamping position on the surface of the workpiece is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically to an adjustable-angle precision drilling positioning clamp. Background Technology

[0002] In fields such as machining, precision instrument manufacturing, and aerospace component processing, drilling is one of the key processes. For workpieces with complex curved surfaces or multi-dimensional hole requirements, such as aero-engine blades and precision gearbox housings, precise angle adjustment and stable clamping of the workpiece are required using positioning fixtures to meet the high-precision drilling requirements of different orientations and tilt angles.

[0003] Currently, existing drilling positioning fixtures mostly rely on manual knobs or dials for angle adjustment. The adjustment process is easily affected by human operation errors and lacks an automated linkage mechanism, making it difficult to achieve rapid and accurate angle positioning and locking. This results in low processing efficiency and a high hole position deviation rate. At the same time, the clamping force control method of conventional fixtures is relatively crude and cannot dynamically adjust the clamping force according to the workpiece material and size, which can easily lead to problems such as workpiece slippage or excessive compression deformation. Therefore, an adjustable-angle precision drilling positioning fixture is proposed. Utility Model Content

[0004] This utility model provides an adjustable-angle precision drilling positioning fixture to solve the problems mentioned in the background art. The existing drilling positioning fixture angle adjustment structure mostly relies on manual knobs or dials. During the adjustment process, it is easily affected by human operation errors and lacks an automated linkage mechanism, making it difficult to achieve fast and accurate angle positioning and locking, resulting in low processing efficiency and high hole position deviation rate. At the same time, the clamping force control method of conventional fixtures is relatively coarse and cannot dynamically adjust the clamping force according to the workpiece material and size.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An adjustable-angle precision drilling positioning fixture includes an angle adjustment mechanism, wherein the angle adjustment mechanism includes a mounting base, a first rotating component is fixedly connected to the top of the mounting base, and a second rotating component is rotatably connected inside the first rotating component; a height adjustment mechanism, wherein the height adjustment mechanism includes a second cylinder, and a placement platform is fixedly connected to the top of the second cylinder; and a positioning clamping mechanism, wherein the positioning clamping mechanism includes a mounting component, a third cylinder is disposed inside the mounting component, and a mounting plate is fixedly connected to the output end of the third cylinder.

[0007] A further improvement of the present invention is that the angle adjustment mechanism further includes a first cylinder, the lower end of which is rotatably connected to the interior of the second rotating component.

[0008] A further improvement of this utility model is that: a universal joint is fixedly connected to the output end of the first cylinder, and an adjustment platform is fixedly connected to the end of the universal joint away from the first cylinder.

[0009] A further improvement of this utility model is that: a mounting bracket is fixedly connected to the top of the adjustment platform, the top of the mounting bracket is bolted to the bottom of the mounting component, and the bottom of the adjustment platform is fixedly connected to the surface of the second cylinder.

[0010] A further improvement of the present invention is that the height adjustment mechanism further includes a first guide rod, the top of the first guide rod is fixedly connected to the bottom of the placement platform, the surface of the first guide rod is slidably connected to the interior of the adjustment platform, and the workpiece is attached to the top of the placement platform.

[0011] A further improvement of the present invention is that the positioning and clamping mechanism further includes a second guide rod, the surface of which is slidably connected to the interior of the mounting plate, one end of which is fixedly connected to a mounting base, and a clamp is inserted into the interior of the mounting base.

[0012] A further improvement of this utility model is that: a rubber pad is fixedly connected to one side of the clamp, and a fixing screw is connected to the internal thread of the mounting base, with one end of the fixing screw abutting against the surface of the clamp.

[0013] A further improvement of this utility model is that a pressure sensor is fixedly connected to one side of the mounting base, a spring is fixedly connected to one side of the pressure sensor, and one end of the spring is fixedly connected to one side of the mounting plate.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] This utility model provides an adjustable-angle precision drilling positioning fixture. Through the setting of the angle adjustment mechanism, the cooperation of the first rotating part and the second rotating part can realize the basic angle rotation. Combined with the linkage of the first cylinder and the universal joint, the adjustment table can be finely adjusted in multiple dimensions, breaking through the limitation of the single-plane adjustment of traditional fixtures and meeting the multi-angle drilling needs of complex curved workpieces. The height adjustment mechanism, through the combination of the second cylinder and the first guide rod, can achieve precise control of the vertical height of the placement table, and then adjust the height of the clamping position on the workpiece surface. The setting of the pressure sensor and spring in the positioning clamping mechanism forms a clamping force feedback structure, which can dynamically adjust the clamping force according to the workpiece material and size, preventing the workpiece from sliding due to insufficient clamping force and avoiding the workpiece deformation caused by over-clamping, making it easier to use. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a bottom view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the positioning and clamping mechanism of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 11. Mounting base; 12. First rotating component; 13. Second rotating component; 14. First cylinder; 15. Universal joint; 16. Adjustment platform; 17. Mounting bracket; 21. Second cylinder; 22. Placement platform; 23. First guide rod; 24. Workpiece; 31. Mounting component; 32. Third cylinder; 33. Mounting plate; 34. Second guide rod; 35. Mounting seat; 36. Clamp; 37. Rubber pad; 38. Fixing screw; 39. Pressure sensor; 310. Spring. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to embodiments: Example

[0022] like Figure 1-4 As shown, this utility model provides an adjustable-angle precision drilling positioning fixture, including an angle adjustment mechanism, which includes a mounting base 11, a first rotating member 12 fixedly connected to the top of the mounting base 11, and a second rotating member 13 rotatably connected inside the first rotating member 12; a height adjustment mechanism, which includes a second cylinder 21, a placement platform 22 fixedly connected to the top of the second cylinder 21; and a positioning clamping mechanism, which includes a mounting member 31, a third cylinder 32 disposed inside the mounting member 31, and a mounting plate 33 fixedly connected to the output end of the third cylinder 32.

[0023] In this embodiment, the first cylinder 14 of the angle adjustment mechanism is activated according to the drilling angle requirement. Its lower end is rotatably connected to the second rotating member 13. The output end drives the adjustment table 16 to perform multi-dimensional angle adjustment through the universal joint 15. The second rotating member 13 rotates within the first rotating member 12 to achieve basic angle deflection. The universal joint 15 compensates for spatial angle deviation, so that the adjustment table 16 drives the positioning and clamping mechanism above to accurately adjust to the target angle, and then the drilling operation is performed. Example

[0024] like Figure 1-4As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the angle adjustment mechanism further includes a first cylinder 14, the lower end of the first cylinder 14 is rotatably connected to the interior of the second rotating member 13, the output end of the first cylinder 14 is fixedly connected to a universal joint 15, the end of the universal joint 15 away from the first cylinder 14 is fixedly connected to an adjustment platform 16, the top of the adjustment platform 16 is fixedly connected to a mounting bracket 17, the top of the mounting bracket 17 is bolted to the bottom of the mounting member 31, the bottom of the adjustment platform 16 is fixedly connected to the surface of the second cylinder 21, the height adjustment mechanism further includes a first guide rod 23, the top of the first guide rod 23 is fixedly connected to the bottom of the placement platform 22, the surface of the first guide rod 23 is slidably connected to the interior of the adjustment platform 16, and the top of the placement platform 22 overlaps with a workpiece 24.

[0025] In this embodiment, by activating the third cylinder 32 of the positioning and clamping mechanism, its output end pushes the mounting plate 33 to move linearly along the second guide rod 34, thereby moving the mounting base 35 and the clamp 36 toward the workpiece. When the rubber pad 37 on the inner side of the clamp 36 contacts the workpiece surface, the pressure sensor 39 monitors the clamping force in real time and automatically adjusts the clamping force through the elastic buffering effect of the spring 310 to avoid overpressure deformation or loosening of the clamp. Example

[0026] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the positioning and clamping mechanism further includes a second guide rod 34, the surface of the second guide rod 34 is slidably connected to the interior of the mounting plate 33, one end of the second guide rod 34 is fixedly connected to a mounting base 35, a clamp 36 is inserted into the interior of the mounting base 35, a rubber pad 37 is fixedly connected to one side of the clamp 36, a fixing screw 38 is threaded into the interior of the mounting base 35, one end of the fixing screw 38 abuts against the surface of the clamp 36, a pressure sensor 39 is fixedly connected to one side of the mounting base 35, a spring 310 is fixedly connected to one side of the pressure sensor 39, and one end of the spring 310 is fixedly connected to one side of the mounting plate 33.

[0027] In this embodiment, the workpiece 24 to be processed is placed on the placement platform 22 of the height adjustment mechanism, the second cylinder 21 is activated to adjust the height of the workpiece, and then the position of the fixture 36 corresponding to the surface of the workpiece 24 is adjusted. According to the shape of the workpiece, the appropriate fixture 36 is inserted into the mounting base 35, and then the fixing screws 38 are tightened to fix the fixture 36.

[0028] The working principle of this adjustable-angle precision drilling positioning fixture will be explained in detail below.

[0029] like Figure 1-4As shown, the workpiece 24 to be processed is first placed on the placement platform 22 of the height adjustment mechanism. The second cylinder 21 is started to adjust the height of the workpiece, and then the position of the fixture 36 corresponding to the surface of the workpiece 24 is adjusted. According to the shape of the workpiece, the appropriate fixture 36 is inserted into the mounting base 35. Then the fixing screws 38 are tightened to fix the fixture 36. The third cylinder 32 of the positioning and clamping mechanism is started, and its output end pushes the mounting plate 33 to move linearly along the second guide rod 34, which drives the mounting base 35 and the fixture 36 to move towards the workpiece. When the rubber pad 37 on the inner side of the fixture 36 contacts the workpiece surface, the pressure sensor 39 monitors the clamping force in real time. The clamping force is automatically adjusted by the elastic buffering effect of the spring 310 to avoid overpressure deformation or loosening. According to the drilling angle requirements, the first cylinder 14 of the angle adjustment mechanism is activated. Its lower end is rotatably connected to the second rotating part 13. The output end drives the adjustment table 16 to perform multi-dimensional angle adjustment through the universal joint 15. The second rotating part 13 rotates within the first rotating part 12 to achieve basic angle deflection. The universal joint 15 compensates for the spatial angle deviation, so that the adjustment table 16 drives the positioning and clamping mechanism above to accurately adjust to the target angle, and then the drilling operation is performed.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An adjustable-angle precision drilling positioning fixture, characterized in that: include An angle adjustment mechanism, the angle adjustment mechanism includes a mounting base (11), a first rotating member (12) is fixedly connected to the top of the mounting base (11), and a second rotating member (13) is rotatably connected inside the first rotating member (12). The height adjustment mechanism includes a second cylinder (21), and a placement platform (22) is fixedly connected to the top of the second cylinder (21). The positioning and clamping mechanism includes a mounting component (31), and a third cylinder (32) is provided inside the mounting component (31). The output end of the third cylinder (32) is fixedly connected to a mounting plate (33).

2. The adjustable-angle precision drilling positioning fixture according to claim 1, characterized in that: The angle adjustment mechanism also includes a first cylinder (14), the lower end of which is rotatably connected to the interior of the second rotating component (13).

3. The adjustable-angle precision drilling positioning fixture according to claim 2, characterized in that: The output end of the first cylinder (14) is fixedly connected to a universal joint (15), and the end of the universal joint (15) away from the first cylinder (14) is fixedly connected to an adjustment table (16).

4. The adjustable-angle precision drilling positioning fixture according to claim 3, characterized in that: The top of the adjustment platform (16) is fixedly connected to the mounting bracket (17), the top of the mounting bracket (17) is bolted to the bottom of the mounting component (31), and the bottom of the adjustment platform (16) is fixedly connected to the surface of the second cylinder (21).

5. The adjustable-angle precision drilling positioning fixture according to claim 1, characterized in that: The height adjustment mechanism also includes a first guide rod (23), the top of the first guide rod (23) is fixedly connected to the bottom of the placement platform (22), the surface of the first guide rod (23) is slidably connected to the interior of the adjustment platform (16), and the top of the placement platform (22) is covered with a workpiece (24).

6. The adjustable-angle precision drilling positioning fixture according to claim 1, characterized in that: The positioning and clamping mechanism also includes a second guide rod (34), the surface of which is slidably connected to the interior of the mounting plate (33), and one end of the second guide rod (34) is fixedly connected to a mounting base (35), and a clamp (36) is inserted into the interior of the mounting base (35).

7. The adjustable-angle precision drilling positioning fixture according to claim 6, characterized in that: A rubber pad (37) is fixedly connected to one side of the clamp (36), and a fixing screw (38) is threadedly connected to the inside of the mounting base (35), with one end of the fixing screw (38) abutting against the surface of the clamp (36).

8. The adjustable-angle precision drilling positioning fixture according to claim 7, characterized in that: A pressure sensor (39) is fixedly connected to one side of the mounting base (35), and a spring (310) is fixedly connected to one side of the pressure sensor (39). One end of the spring (310) is fixedly connected to one side of the mounting plate (33).

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