Tool clamp of MEMS accelerometer vibration table

Abstract

The utility model belongs to the technical field of work fixtures, and particularly relates to a work fixture of an MEMS accelerometer vibration table, which comprises a fixture main body, the fixture main body is a cube and is made of aluminum alloy, the outer wall of the fixture main body is provided with a first mounting hole, and the top surface of the fixture main body is provided with a second mounting hole and a connecting hole. The MEMS accelerometer is fixed on the outer wall of the clamp main body, the clamp main body is a cube and can be installed in three axial directions, the eight vertexes of the clamp main body are provided with chamfers, and the clamp main body is made of aluminum alloy, so that the test precision and effect can be improved; compared with the prior art, the utility model has light weight and can be installed in multiple directions.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and more specifically, it relates to a tooling and fixture for a MEMS accelerometer vibration table. Background Technology

[0002] Vibration characteristic testing is a key means of evaluating the performance of products or structures under vibration. As an important auxiliary tool for testing, the design and selection of tooling fixtures have a significant impact on the accuracy and reliability of test results.

[0003] like Figure 1 As shown, this is an existing fixture for placing a MEMS accelerometer vibration table. It includes a fixture body 01, a base 02 mounted on the top surface of the fixture body 01, and several mounting holes 03 and several placement holes 04 on the top surface of the fixture body 01. The placement holes 04 are located in the middle of the mounting holes 03. Because the fixture body 01 has only one surface, the MEMS accelerometer can only be placed on this surface, making multi-directional installation impossible.

[0004] Taking the currently used small vibration vertical table as an example, its maximum thrust is 100g, and the mass of the moving coil is m1 = 3kg. According to the formula F = (m1 + m2 + m3)a, under the maximum thrust limit, the total weight of the tooling fixture (m2) and the product (m3) is at most 7kg. When the fixture is too heavy, the remaining load-bearing capacity is not enough to install multiple fixtures, and more thrust will be consumed, affecting the test accuracy and effect. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a lightweight tooling fixture for a MEMS accelerometer vibration table that can be installed in multiple orientations.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A fixture for a MEMS accelerometer vibration table includes a fixture body, characterized in that the fixture body is a cube and made of aluminum alloy.

[0008] The main body of the fixture has several evenly distributed first mounting holes on its outer wall.

[0009] The top surface of the fixture body has several evenly distributed second mounting holes and connecting holes, with the connecting holes located between the second mounting holes.

[0010] There are four connecting holes, which are arranged in a rectangular shape.

[0011] The bottom surface of the fixture body has four through holes, each of which corresponds to and is connected to one of the four connecting holes.

[0012] The utility model further sets up: the chamfer is equipped in the vertex of clamp main part.

[0013] The utility model further sets up: first installation hole and second installation hole diameter size are same, the diameter size of connecting hole is all greater than the diameter size of through -hole, first installation hole and second installation hole.

[0014] The utility model further sets up: connecting hole is close to the edge between the top surface of clamp main part and the outer wall of clamp main part.

[0015] Through adopting above-mentioned technical scheme, the utility model has the beneficial effects of:

[0016] Fix MEMS accelerometer on the outer wall of clamp main part, through the square of clamp main part, five surfaces can be installed, three axial installation can be realized, and further realize multidirectional installation, the chamfer of eight vertexes of clamp main part and the adoption of aluminium alloy of clamp main part, thereby the clamp main part is light in weight, can improve test precision and effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 For prior art;

[0018] Figure 2 For the utility model embodiment one's perspective drawing;

[0019] Figure 3 For the utility model embodiment one's structural schematic diagram;

[0020] Figure 4 For the utility model embodiment two's perspective drawing;

[0021] Figure 5 For the utility model embodiment two's structural schematic diagram;

[0022] Figure 6 For the utility model embodiment three's perspective drawing.

[0023] Clamp main part 1, first installation hole 2, second installation hole 3, connecting hole 4, through -hole 5,

[0024] Clamp shell 6, cavity 7, fixed column 8, positioning hole 9, first slot hole 10, second slot hole 11, carry hole 12, clamp shell 13, hollow slot 14, first pre -buried hole 15, second pre -buried hole 16, auxiliary hole 17, jack 18. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0026] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0027] As shown in FIG. 1, Figures 2-3 The tool clamp of the MEMS accelerometer vibration table,

[0028] Embodiment one: comprising a clamp body 1, the clamp body 1 is a cube, the clamp body 1 is made of aluminum alloy, and the clamp body 1 has chamfers at the top vertices, the chamfers are straight lines, which reduces the weight of the clamp body 1 and makes the clamp body 1 light in weight.

[0029] The clamp body 1 has a plurality of first mounting holes 2 evenly distributed on the four outer walls, and the clamp body 1 has a plurality of second mounting holes 3 and connecting holes 4 evenly distributed on the top surface. The MEMS accelerometer is fixed on the outer wall of the clamp body 1 by penetrating the first mounting hole 2 or the second mounting hole 3 with a screw, which makes installation more convenient. At this time, five surfaces can be installed, and three axial installations can be achieved, thereby realizing multi-directional installation. The four through holes 5 on the bottom surface of the clamp body 1 correspond to and communicate with the four connecting holes 4 on the top surface, which facilitates wiring.

[0030] The connecting hole 4 is close to the edge between the top surface of the clamp body 1 and the outer wall of the clamp body 1, so that when multiple MEMS accelerometers are placed, the MEMS accelerometers will not collide with each other, and the test accuracy and effect can be improved.

[0031] Embodiment two: Figures 4-5 As shown in FIG. 2, it comprises a clamp shell 6, which is made of aluminum alloy to reduce weight,

[0032] The clamp shell 6 is a hexahedron, which realizes three axial installations. A cavity 7 is formed on the top surface of the clamp shell 6, six fixing columns 8 are installed in the cavity 7, and positioning holes 9 are formed on the six fixing columns 8,

[0033] The first slot holes 10 are arranged on the six surfaces of the outer wall of the clamp shell 6, the second slot holes 11 and the object loading holes 12 are arranged on the top surface of the clamp shell 6, the object loading holes 12 and the positioning holes 9 are communicated, and the clamp shell 6 can be fixed and disassembled through the first slot holes 10 and the second slot holes 11.

[0034] The object loading holes 12 are six, the six object loading holes 12 are communicated with the six positioning holes 9 on the six fixed columns 8 one by one, wires are conveniently arranged, and a hexagon shape is formed between the six object loading holes 12 and the six positioning holes 9.

[0035] Embodiment three: Figure 6 As shown, the clamp shell 13 is a square, the clamp shell 13 is made of aluminum alloy, the overall weight of the clamp shell 13 can be reduced, the hollow slot 14 is arranged on one side of the clamp shell 13, and the weight of the clamp shell 13 can be further reduced,

[0036] Since the clamp shell 13 has four surfaces, two surfaces are hollow through the hollow slot 14, and a plurality of first embedded holes 15 are arranged on the other two surfaces,

[0037] A plurality of second embedded holes 16 are arranged on the top surface of the clamp shell 13, the second embedded holes 16 and the first embedded holes 15 are communicated with the hollow slot 14,

[0038] Five auxiliary holes 17 and jack holes 18 are arranged on the bottom surface of the clamp shell 13, the auxiliary holes 17 and the jack holes 18 are communicated with the hollow slot 14, the MEMS accelerometer and the clamp shell 13 are fixed through the first embedded holes 15, the second embedded holes 16 and screws, the jack holes 18 are eight, the jack holes 18 are distributed in pairs, and the jack holes 18 distributed in pairs are in a rectangular shape.

[0039] The above only describes preferred embodiments of the utility model and is not used to limit the utility model, and the person skilled in the art can make common changes and replacements within the technical scheme range of the utility model, which should be included in the protection range of the utility model.

Claims

1. A tooling fixture for a MEMS accelerometer vibration table, comprising a fixture body (1), characterised in that, The clamp body (1) is a cube, the clamp body (1) is made of aluminum alloy, The clamp body (1) is provided with a plurality of first installation holes (2) on the outer wall, The clamp body (1) is provided with a plurality of second installation holes (3) and connecting holes (4) on the top surface, the connecting holes (4) are arranged between the second installation holes (3), The connecting holes (4) are four, and the four connecting holes (4) are distributed in a rectangular shape, The clamp body (1) is provided with four through holes (5) on the bottom surface, the four through holes (5) are respectively corresponding to and communicated with the four connecting holes (4).

2. The tooling fixture for a MEMS accelerometer vibration table of claim 1, wherein, The clamp body (1) is provided with a chamfer at the vertex.

3. The tooling fixture for a MEMS accelerometer vibration table of claim 1, wherein, The first installation hole (2) and the second installation hole (3) are the same in diameter, and the diameter of the connecting hole (4) is larger than that of the through hole (5), the first installation hole (2) and the second installation hole (3).

4. The tooling fixture for a MEMS accelerometer vibration table of claim 1, wherein, The connecting hole (4) is close to the edge formed between the top surface of the clamp body (1) and the outer wall of the clamp body (1).

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