Positioning clamp for assembling curved-surface thin-plate parts

Abstract

The utility model discloses a positioning fixture for assembling curved-surface thin-plate parts, which relates to the technical field of assembling curved-surface thin-plate parts and comprises a base, a positioning groove arranged on the upper surface of the base and a workbench fixedly mounted on the upper surface of the base, and an adjusting mechanism is arranged in the workbench. A positioning and clamping mechanism is arranged above the surface of the adjusting mechanism, and the adjusting mechanism comprises a driving unit arranged in the workbench. A rotating handle is rotated to drive a lead screw to rotate, so that a sliding seat moves on the surface of the rotating handle, the sliding seat drives a fixing plate to move, the distance between the sliding seat and a mounting plate is adjusted, then a driving motor is arranged to drive a two-way threaded rod to rotate, a sliding block moves in a moving groove, and then a supporting plate is driven to move; and adjustment can be carried out according to the area of the curved-surface thin plate type part, and the practicability of the clamp can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of curved surface thin plate parts assembly, in particular to a positioning fixture used for curved surface thin plate parts assembly. Background Art

[0002] A fixture is a device used to fix the object to be processed and position it in the correct position to accept processing or testing during the mechanical manufacturing process. It is widely used in mechanical manufacturing, testing, assembly and other processes. According to the usage characteristics, it can be divided into universal fixtures, special fixtures, adjustable fixtures, and combination fixtures. In the assembly process, there are a large number of curved thin plate parts in the fields of aircraft, spacecraft, ships, etc. Due to the different shapes of such parts and different assembly environments, different special fixtures are usually used; at the same time, the surface of curved thin plate parts is complex and difficult to accurately express using mathematical expressions. Therefore, the assembly of curved thin plate parts is particularly difficult, and its assembly accuracy is difficult to guarantee and positioning is difficult. In view of this reason, it is necessary to propose a fixture that can effectively position and fix curved plate parts.

[0003] In the existing technology, a positioning fixture for assembling curved thin plate parts with a publication number of CN105773491A is proposed, which can clamp and position different curved thin plate parts and can be used as an adapter for the curved thin plate parts, so as to facilitate the accurate picking up of the curved thin plate parts during the assembly process. The fixture of the present invention is mainly composed of a bottom plate, a fixed base, a lower positioning pin, an adjustable base, a side positioning column, and an ejector pin. The side positioning column constrains and positions the movement freedom of the curved thin plate parts in the X and Y directions and the rotation freedom along the Z direction. The ejector pin can position the movement freedom of the curved thin plate parts in the Z direction and the rotation freedom in the X and Y directions; it is convenient for the curved thin plate parts to be taken out upward

[0004] In order to solve the problems that the processing of curved thin plate parts is difficult, the assembly accuracy is difficult to ensure, and the positioning is difficult, the existing technology adopts the method of incorporating into the system, but the operation is cumbersome and difficult. After the positioning fixture positions and clamps the product, it needs to be fixed. The fixing structure is relatively simple, but it is not firm and is easy to fall off, causing damage, which leads to the problem of reduced utilization efficiency of the positioning fixture. Utility Model Content

[0005] The utility model aims to provide a positioning fixture for assembling curved thin plate parts to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A positioning fixture for assembling curved thin plate parts comprises a base.

[0008] A positioning groove is provided on the upper surface of the base.

[0009] And a workbench fixedly installed on the upper surface of the base, the workbench is provided with an adjusting mechanism inside, a positioning and clamping mechanism is provided above the surface of the adjusting mechanism, the adjusting mechanism includes a driving unit provided inside the workbench, an adjusting unit is provided on the surface of the driving unit, the positioning and clamping mechanism includes a power unit provided above the surface of the workbench, and a clamping unit is fixedly installed on one end of the power unit.

[0010] A further improvement of the technical solution of the utility model is that a mounting plate is fixedly mounted on the upper surface of the workbench, screws are connected to the internal threads of the mounting plate, and a fixing plate is arranged on one side surface of the mounting plate, and the fixing plate is located on the upper surface of the workbench.

[0011] A further improvement of the technical solution of the utility model is that the driving unit includes a screw arranged inside the workbench, a rotating handle is fixedly installed on one end of the screw, and a sliding seat is movably installed on the outer surface of the screw, and the fixed plate is mounted on the upper surface of the sliding seat.

[0012] A further improvement of the technical solution of the utility model is that the adjustment unit includes a driving motor fixedly mounted on the surface of one side of the mounting plate and the fixing plate, and the surfaces of the mounting plate and the fixing plate are both provided with movable grooves, and the output end of the driving motor is fixedly connected to a bidirectional threaded rod.

[0013] A further improvement of the technical solution of the utility model is that: the bidirectional threaded rod is located inside the movable groove, one end of the bidirectional threaded rod is rotatably connected to the inside of the driving motor, and a sliding block is movably installed on the surface of the bidirectional threaded rod.

[0014] A further improvement of the technical solution of the utility model is that the power unit includes a support plate slidably mounted on the surfaces of the mounting plate and the fixed plate, the bottom of the support plate is fixedly connected to the upper surface of the slider, a cylinder is fixedly mounted on the outer surface of the support plate, and a limiting plate is fixedly mounted on one end of the cylinder.

[0015] A further improvement of the technical solution of the utility model is that the clamping unit includes a lower clamp fixedly mounted on the upper surface of the support plate, an upper clamp is arranged above the lower clamp, the upper clamp is movably mounted on one side surface of the limit plate, and the top surface of the upper clamp is fixedly connected to an electric push rod.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides a positioning fixture for assembling curved thin plate parts. By rotating the handle, the lead screw is driven to rotate, so that the slide moves on its surface, and the slide drives the fixed plate to move to adjust the distance between the slide and the mounting plate. Then, a driving motor is set to drive the bidirectional threaded rod to rotate the rod, so that the slider moves inside the moving groove, and then drives the support plate to move, so that it can be adjusted according to the area size of the curved thin plate parts, which is beneficial to improve the practicability of the fixture, thereby improving the utilization efficiency of the fixture.

[0018] 2. The utility model provides a positioning fixture for assembling curved thin plate parts. The cylinder installed on the outer surface of the support plate pushes the limit plate to move so that the parts can be located between the lower fixture and the upper fixture. Then, the electric push rod is used to push the upper fixture down, which is conducive to adjusting according to the size and thickness of the parts, and then positioning and clamping the parts, thereby improving the use efficiency of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of the structural adjustment mechanism of the utility model;

[0021] Figure 3 It is a three-dimensional schematic diagram of the structural positioning clamping mechanism of the utility model;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0023] In the figure: 1. base; 2. positioning groove; 3. workbench; 31. mounting plate; 32. fixing plate; 33. screw; 4. adjustment mechanism; 41. lead screw; 42. turning handle; 43. slide seat; 5. adjustment unit; 51. drive motor; 52. moving groove; 53. bidirectional threaded rod; 54. slide block; 6. positioning clamping mechanism; 61. support plate; 62. cylinder; 63. limit plate; 64. lower fixture; 65. upper fixture; 66. electric push rod. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the embodiments:

[0025] Example 1

[0026] like Figure 1-4As shown, the utility model provides a positioning fixture for assembling curved thin plate parts, including a base 1, a positioning groove 2 provided on the upper surface of the base 1, and a workbench 3 fixedly installed on the upper surface of the base 1, an adjusting mechanism 4 is arranged inside the workbench 3, a positioning clamping mechanism 6 is arranged above the surface of the adjusting mechanism 4, the adjusting mechanism 4 includes a driving unit arranged inside the workbench 3, an adjusting unit 5 is arranged on the surface of the driving unit, the positioning clamping mechanism 6 includes a power unit arranged above the surface of the workbench 3, a clamping unit is fixedly installed at one end of the power unit, and a clamping unit is fixedly installed on the upper surface of the workbench 3. A mounting plate 31 is provided, the internal threads of the mounting plate 31 are connected with screws 33, and a fixing plate 32 is provided on one side surface of the mounting plate 31, and the fixing plate 32 is located on the upper surface of the workbench 3, and the driving unit includes a lead screw 41 provided inside the workbench 3, a turning handle 42 is fixedly installed on one end of the lead screw 41, and a slide 43 is movably installed on the outer surface of the lead screw 41, and the fixing plate 32 is mounted on the upper surface of the slide 43, and by rotating the turning handle 42, the lead screw 41 is driven to rotate, so that the slide 43 moves on its surface, and the slide 43 drives the fixing plate 32 to move, so as to adjust the distance between the fixing plate 32 and the mounting plate 31.

[0027] Example 2

[0028] like Figure 1-4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the adjustment unit 5 includes a driving motor 51 fixedly mounted on the surface of one side of the mounting plate 31 and the fixing plate 32, and the surfaces of the mounting plate 31 and the fixing plate 32 are provided with a movable groove 52, and the output end of the driving motor 51 is fixedly connected with a bidirectional threaded rod 53, the bidirectional threaded rod 53 is located inside the movable groove 52, and one end of the bidirectional threaded rod 53 is rotatably connected to the inside of the driving motor 51, and a slider 54 is movably installed on the surface of the bidirectional threaded rod 53, and the driving motor 51 is arranged to drive the bidirectional threaded rod 53 to rotate, so that the slider 54 moves inside the movable groove 52, thereby driving the support plate 61 to move, so as to be adjusted according to the area size of the curved thin plate parts.

[0029] Example 3

[0030] like Figure 1-4As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the power unit includes a support plate 61 slidably mounted on the surfaces of the mounting plate 31 and the fixing plate 32, the bottom of the support plate 61 is fixedly connected to the upper surface of the slider 54, a cylinder 62 is fixedly mounted on the outer surface of the support plate 61, and a limiting plate 63 is fixedly mounted on one end of the cylinder 62, and the clamping unit includes a lower clamp 64 fixedly mounted on the upper surface of the support plate 61, an upper clamp 65 is arranged above the lower clamp 64, the upper clamp 65 is movably mounted on one side surface of the limiting plate 63, and an electric push rod 66 is fixedly connected to the top surface of the upper clamp 65, and the cylinder 62 installed on the outer surface of the support plate 61 pushes the limiting plate 63 to move, so that the part can be located between the lower clamp 64 and the upper clamp 65, and then the electric push rod 66 is used to push the upper clamp 65 down, which is conducive to adjustment according to the size and thickness of the part, and then positioning and clamping the part.

[0031] The following is a detailed description of the working principle of the positioning fixture used for assembling curved thin plate parts.

[0032] like Figure 1-4 As shown, first, by rotating the handle 42, the lead screw 41 is driven to rotate, so that the slide 43 moves on its surface, and the slide 43 drives the fixed plate 32 to move, and adjusts the distance between the mounting plate 31. Then, by setting the driving motor 51 to drive the bidirectional threaded rod 53 to rotate the rod, the slider 54 moves inside the moving groove 52, and then drives the support plate 61 to move, and adjusts according to the area size of the curved thin plate parts. At the same time, through the cylinder 62 installed on the outer surface of the support plate 61, the limit plate 63 is pushed to move, so that the part can be located between the lower clamp 64 and the upper clamp 65. Then, the electric push rod 66 is used to push the upper clamp 65 down, which is conducive to adjusting according to the size and thickness of the part, and then positioning and clamping the part.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A positioning fixture for assembling curved thin plate parts, comprising a base (1); A positioning groove (2) is provided on the upper surface of the base (1); and a workbench (3) fixedly mounted on the upper surface of the base (1), characterized in that: An adjusting mechanism (4) is arranged inside the workbench (3); a positioning clamping mechanism (6) is arranged above the surface of the adjusting mechanism (4); the adjusting mechanism (4) comprises a driving unit arranged inside the workbench (3); an adjusting unit (5) is arranged on the surface of the driving unit; the positioning clamping mechanism (6) comprises a power unit arranged above the surface of the workbench (3); a clamping unit is fixedly mounted on one end of the power unit.

2. A positioning fixture for assembling curved thin plate parts according to claim 1, characterized in that: A mounting plate (31) is fixedly mounted on the upper surface of the workbench (3), a screw (33) is connected to the internal thread of the mounting plate (31), and a fixing plate (32) is arranged on one side surface of the mounting plate (31), and the fixing plate (32) is located on the upper surface of the workbench (3).

3. A positioning fixture for assembling curved thin plate parts according to claim 2, characterized in that: The driving unit comprises a lead screw (41) arranged inside the workbench (3), a rotating handle (42) is fixedly mounted on one end of the lead screw (41), and a sliding seat (43) is movably mounted on the outer surface of the lead screw (41), and the fixed plate (32) is mounted on the upper surface of the sliding seat (43).

4. A positioning fixture for assembling curved thin plate parts according to claim 2, characterized in that: The adjustment unit (5) comprises a driving motor (51) fixedly mounted on the surface of one side of the mounting plate (31) and the fixing plate (32), and the surfaces of the mounting plate (31) and the fixing plate (32) are both provided with a moving groove (52), and the output end of the driving motor (51) is fixedly connected to a bidirectional threaded rod (53).

5. A positioning fixture for assembling curved thin plate parts according to claim 4, characterized in that: The bidirectional threaded rod (53) is located inside the movable groove (52), and one end of the bidirectional threaded rod (53) is rotatably connected to the inside of the driving motor (51), and a sliding block (54) is movably mounted on the surface of the bidirectional threaded rod (53).

6. A positioning fixture for assembling curved thin plate parts according to claim 5, characterized in that: The power unit comprises a support plate (61) slidably mounted on the surfaces of the mounting plate (31) and the fixing plate (32); the bottom of the support plate (61) is fixedly connected to the upper surface of the slider (54); a cylinder (62) is fixedly mounted on the outer surface of the support plate (61); and a limit plate (63) is fixedly mounted on one end of the cylinder (62).

7. The positioning fixture for assembling curved thin plate parts according to claim 1, characterized in that: The clamping unit comprises a lower clamp (64) fixedly mounted on the upper surface of the support plate (61), an upper clamp (65) is arranged above the lower clamp (64), the upper clamp (65) is movably mounted on a side surface of the limiting plate (63), and the top surface of the upper clamp (65) is fixedly connected to an electric push rod (66).

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