Scribing auxiliary device for pasting strain gauges

Abstract

The utility model discloses a scribing auxiliary device for pasting strain gauges, which belongs to the technical field of structures and comprises a base, a thickness limiting clamping plate, a length limiting clamping plate and a width limiting clamping plate. The thickness limiting clamping plate comprises a thickness clamping face and a sliding fixing face, and a cross-shaped groove is formed in the thickness clamping face. The length limiting clamping plate comprises a length clamping plate and a sliding supporting strip. The width limiting clamping plate comprises a sliding strip and a supporting strip; according to the device, a test piece is supported through the base supporting surface, the test piece is clamped from the two sides of the test piece through the width limiting clamping plate, the test piece is supported from one side of the test piece through the length limiting clamping plate, meanwhile, the upper surface of the test piece is pressed and fixed through the thickness clamping surface, and lineation is conducted through the cross-shaped groove in the thickness clamping surface. The device can be adjusted in multiple directions in the thickness direction, the length direction and the width direction, is suitable for test pieces of different shapes and sizes, and the universality and stability of the device are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to structure technical field especially relates to a kind of pasting strain gauge scribing auxiliary device. BACKGROUND

[0002] In the performance test of composite material, for example, in the compression test after impact, the accurate scribing of test piece is crucial for the accurate pasting of strain gauge. Patent CN221957951U discloses a soil reinforcement geogrid strain gauge auxiliary pasting device, which is specially designed for strain gauge pasting and includes an adjustable support structure and a positioning device. The device can fix the test piece through mechanical means and ensure the accuracy of the strain gauge pasting position. The device can adapt to test pieces of different thicknesses and sizes through the adjustable support structure, improving the stability of strain gauge pasting. However, the device is only effective in the fixed support direction and cannot be adjusted in multiple directions, limiting its applicability to test pieces of different shapes. Patent CN113357239B: AR auxiliary positioning and pasting device introduces a method of using augmented reality (AR) to assist positioning. By superimposing a digital model pattern on the structure, the device helps operators accurately paste strain gauges on the structure. The device uses AR technology to reduce manual measurement errors and is suitable for large-scale standardized test pieces. However, AR equipment has high requirements for environmental light and test piece shape, making it difficult to perform high-precision scribing on test pieces with complex shapes or non-standard sizes. Therefore, it is important to design a high-precision, highly applicable, and multi-directionally adjustable scribing auxiliary device. UTILITY MODEL CONTENTS

[0003] In view of the above, the utility model discloses a kind of pasting strain gauge scribing auxiliary devices.

[0004] The utility model adopts the following technical solutions:

[0005] A kind of pasting strain gauge scribing auxiliary device, the device includes: base, thickness limit clamping plate, length limit clamping plate and width limit clamping plate;

[0006] The thickness limit clamping plate includes a thickness clamping surface and a sliding fixed surface, which are perpendicular to each other. The thickness clamping surface is used to press the test piece from the upper side of the thickness direction of the test piece. Two strip-shaped fixed holes are provided on the sliding fixed surface. A cross recess is provided on the thickness clamping surface, which is used to position the scribing position of the test piece.

[0007] The length limit clamping plate includes a length clamping plate and a sliding support bar, and the length clamping plate is located at the end of the sliding support bar. The length clamping plate supports the test piece from one side of the length direction of the test piece.

[0008] The width limiting clamping plate comprises a sliding bar and a supporting bar, which are arranged perpendicularly to each other; the width limiting clamping plate is two pieces, which clamps the test piece from both sides of the width direction of the test piece respectively;

[0009] The base comprises a base supporting surface and a base vertical surface, which are perpendicular to each other, and the intersection of the two planes forms a base long axis;

[0010] The base supporting surface comprises a width limiting clamping plate sliding groove and a length limiting clamping plate sliding groove, the width limiting clamping plate sliding groove is used for the sliding and fixing of the width limiting clamping plate, and the length limiting clamping plate sliding groove is used for the sliding and fixing of the length limiting clamping plate; the base vertical surface comprises a thickness limiting clamping plate fixed sliding groove, which is used for the fixing and sliding of the thickness limiting clamping plate; the setting direction of the width limiting clamping plate sliding groove is parallel to the base long axis, the direction of the length limiting clamping plate sliding groove is perpendicular to the base long axis, and the direction of the thickness limiting clamping plate fixed sliding groove is perpendicular to the base long axis.

[0011] Further, the base is a cuboid structure, the base supporting surface is one long side surface of the cuboid structure, the long side surface is one side surface of the long side direction of the cuboid structure, and the base vertical surface is an adjacent long side surface of the base supporting surface.

[0012] Further, one side of the middle part of the base supporting surface is provided with a notch groove, and the notch groove is a moving space of the length clamping plate.

[0013] Further, the width limiting clamping plate sliding groove penetrates through the notch groove, and the supporting bar is arranged on one side of the sliding bar.

[0014] Further, the length limiting clamping plate sliding groove is communicated with the notch groove.

[0015] Further, the thickness clamping surface is provided with a square opening one, and the sliding fixing surface is provided with a square opening two, the square opening one is used for providing the length clamping plate moving space, and the square opening two is used for providing the sliding supporting bar sliding space.

[0016] Further, two strip-shaped fixing holes are located on both sides of the square opening two.

[0017] Further, the thickness limiting clamping plate fixed sliding groove and the strip-shaped fixing hole correspond to each other, which is used for fixing the thickness limiting clamping plate to the base vertical surface.

[0018] Further, a strip-shaped groove is arranged on the sliding support bar, and the strip-shaped groove is used for fixing the sliding support bar in the length limiting clamping plate sliding groove.

[0019] Further, the cross-shaped groove is three.

[0020] The adhesive strain gauge marking auxiliary device has the advantages that:

[0021] The adhesive strain gauge marking auxiliary device is designed, and the deficiencies of the prior art in positioning and marking of composite test pieces are compensated.

[0022] The adhesive strain gauge marking auxiliary device has the advantages that:

[0023] Multi-directional accurate adjustment: the device is provided with a three-dimensional moving structure of multiple components, and accurate adjustment of the test piece in the up-down, left-right and front-back directions is realized, multi-directional adjustment in the thickness, length and width directions is realized, the device is suitable for test pieces of different shapes and sizes, and the universality and stability of the device are significantly improved.

[0024] Long-short asymmetric design of the horizontal component: the support bar is arranged on one side of the sliding bar, so that the device can flexibly select a support mode according to the size of the test piece, and adapt to test pieces of different sizes and shapes.

[0025] Cross-shaped groove structure for accurate marking: the device is provided with a cross-shaped groove in the marking area, so as to guide the path of the marking tool, ensure the marking accuracy, avoid manual marking errors, ensure that the adhesive position of the strain gauge meets the high-precision requirement, and help the operator to accurately mark the adhesive position of the strain gauge.

[0026] The device is suitable for high-precision scenes such as composite material impact compression test, and can be applied to performance testing of other composite materials, and the accuracy of the adhesive position of the strain gauge is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows: obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 is a schematic diagram of the adhesive strain gauge marking auxiliary device of the present application;

[0029] Figure 2 is a base schematic view of the adhesive strain gauge scribing auxiliary device of the utility model;

[0030] Figure 3 is a thickness limiting clamp plate schematic view of the adhesive strain gauge scribing auxiliary device of the utility model;

[0031] Figure 4 is a length limiting clamp plate schematic view of the adhesive strain gauge scribing auxiliary device of the utility model;

[0032] Figure 5 is a width limiting clamp plate schematic view of the adhesive strain gauge scribing auxiliary device of the utility model;

[0033] Figure 6 is a test piece installation overall schematic view of the adhesive strain gauge scribing auxiliary device of the utility model. DETAILED DESCRIPTION

[0034] In order to better understand the technical scheme of the utility model, the utility model embodiments are described in detail below with reference to the drawings.

[0035] It should be clear that the described embodiments are only some of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0036] Embodiment 1:

[0037] As shown in Figure 1 An adhesive strain gauge scribing auxiliary device, the device comprises: base 1, thickness limiting clamp plate 2, length limiting clamp plate 3 and width limiting clamp plate 4;

[0038] As shown in Figure 3 The thickness limiting clamp plate 2 includes thickness clamping surface 21 and sliding fixed surface 22, and the thickness clamping surface 21 and sliding fixed surface 22 are arranged perpendicular to each other; the thickness clamping surface 21 is used to press the test piece from the upper side of the thickness direction of the test piece; two strip-shaped fixed holes 23 are arranged on the sliding fixed surface 22; cross recess 24 is arranged on the thickness clamping surface 22, and the cross recess 24 is used to position the scribing position of the test piece;

[0039] As shown in Figure 4 The length limiting clamp plate 3 includes length clamping plate 31 and sliding support strip 32, and the length clamping plate 31 is located at the end of the sliding support strip 32; the length clamping plate 31 supports the test piece from one side of the length direction of the test piece;

[0040] AsFigure 5 As shown, the width limiting clamp 4 includes a sliding bar 41 and a support bar 42, which are arranged perpendicularly to each other; the width limiting clamp 4 consists of two pieces, which clamp the test piece from both sides in the width direction of the test piece respectively;

[0041] like Figure 2 As shown, the base 1 includes a base support surface 11 and a base vertical surface. The base support surface 11 and the base vertical surface are perpendicular to each other. The intersection of the two planes, the base support surface 11 and the base vertical surface, forms the long axis 12 of the base.

[0042] The base support surface 11 includes a width-limiting clamping plate groove 13 and a length-limiting clamping plate groove 14. The width-limiting clamping plate groove 13 is used for sliding and fixing the width-limiting clamping plate 4, and the length-limiting clamping plate groove 14 is used for sliding and fixing the length-limiting clamping plate 3. The vertical surface of the base includes a thickness-limiting clamping plate fixing groove 15, which is used for fixing and sliding the thickness-limiting clamping plate 2. The setting direction of the width-limiting clamping plate groove 13 is parallel to the long axis 12 of the base, the direction of the length-limiting clamping plate groove 14 is perpendicular to the long axis 12 of the base, and the direction of the thickness-limiting clamping plate fixing groove 15 is perpendicular to the long axis 12 of the base. Figure 2 As shown.

[0043] Furthermore, the base 1 is a cuboid structure, the base support surface 11 is a long side surface of the cuboid structure, the long side surface is a side surface along the long side direction of the cuboid structure, and the base vertical surface is a long side surface adjacent to the base support surface. Figure 2 As shown.

[0044] Furthermore, a notch / groove 16 is provided on one side of the middle portion of the base support surface 11, and the notch / groove 16 provides a moving space for the length clamping plate 31. Figure 2 As shown.

[0045] Furthermore, the width-limiting clamp groove 13 penetrates the notch groove 16, as shown in the image. Figure 2 As shown, the support bar is disposed on one side of the sliding bar, as... Figure 5 As shown, when the support bar is set on one side of the sliding bar, the clamping plate direction can be adjusted by changing the width to provide better clamping adaptability for test pieces of different widths.

[0046] Furthermore, the length-limiting clamp groove 14 is connected to the notch groove 16. For example... Figure 2 As shown.

[0047] Further, the thickness clamping surface 21 is provided with a square opening one 25, and the sliding fixing surface 22 is provided with a square opening two 26, the square opening one 25 is used to provide the length clamping plate 31 moving space, and the square opening two 26 is used to provide the sliding support strip 32 sliding space. Figure 3 As shown.

[0048] Further, two strip-shaped fixing holes 23 are located on both sides of the square opening two 26. Figure 3 As shown.

[0049] Further, the thickness limiting clamp plate fixing sliding groove 15 corresponds to the strip-shaped fixing hole 23, and is used to fix the thickness limiting clamp plate 2 to the base vertical surface.

[0050] Further, the sliding support strip 32 is provided with a strip-shaped groove 33, and the strip-shaped groove 33 is used to fix the sliding support strip 32 in the length limiting clamp plate sliding groove 14.

[0051] Further, the cross-shaped groove 24 is three. Figure 3 As shown.

[0052] Embodiment 2

[0053] Test piece installation:

[0054] As shown, the width limiting clamp plate is preliminarily adjusted: first, the width of the test piece 5 is observed by visual observation, and the two width limiting clamp plates 4 are preliminarily adjusted, the distance between the two clamp plates is adjusted to approximately conform to the width size of the test piece 5. This operation is mainly to leave a rough placing space for the test piece. Figure 6 The length limiting clamp plate is preliminarily adjusted: according to the length of the test piece, the position of the length limiting clamp plate 3 is adjusted to match the length of the test piece. Ensure that the test piece can be placed on the upper surface extension area of the clamp plate in the width and length directions.

[0055] Place the test piece: gently place the test piece 5 on the base 1, so that it is placed between the two width limiting clamp plates 4 and the extension position of the length limiting clamp plate 3, and the test piece is supported by the length clamping plate 31. Ensure that the test piece is located in the middle area of the device for accurate adjustment in subsequent operations.

[0056] Precisely adjust the width limiting clamp plate: after the test piece is placed in place, observe the position of the scale line on the base 1, and precisely adjust the two width limiting clamp plates 4 respectively, so that they are in uniform contact with the two side edges of the test piece and are centered. Ensure that the width limiting clamp plate is tightly fitted with the two sides of the test piece to avoid lateral movement of the test piece in the width direction.

[0057] ​

[0058] Fine adjustment of length limiting clamps: According to the scale on the base 1, fine-tune the front and back position of the length limiting clamps 3, so that they are close to the edge of the test piece, and ensure that the test piece is centered in the length direction. This adjustment step helps to ensure that the test piece does not slide forward and backward during the scribing operation.

[0059] Fasten the bolts: After the test piece 5 is aligned and fixed in place, tighten the bolts of the width limiting clamps 4 and the length limiting clamps 3 respectively to fix the position of all clamps. Ensure that each clamp is firmly fixed on the base to avoid displacement of the test piece in the following operation.

[0060] Thickness adjustment:

[0061] Adjust the thickness limiting clamps, use the thickness limiting clamps 2 to fix the test piece in the thickness direction. Adjust the thickness clamping surface 22 of the thickness limiting clamps 2 downward until it is in contact with the upper surface of the test piece. The downward pressure of the thickness limiting clamps 2 should be firm enough to ensure that the test piece does not move up and down in the thickness direction.

[0062] Centering and positioning: Ensure that the thickness limiting clamps 2 are in uniform contact with the upper surface of the test piece. The thickness scale or reference line markings on the base can be used to further confirm whether the position of the thickness limiting clamps is appropriate.

[0063] Fix the thickness limiting clamps: After confirming that the thickness clamping surface 22 of the thickness limiting clamps 2 is in close contact with the surface of the test piece, tighten the bolts of the thickness limiting clamps to ensure that their position is firm, so as not to displace up and down during scribing.

[0064] Scribing operation:

[0065] Select scribing tool and check cross groove 24: Select the appropriate scribing tool to ensure that the scribing tool can move smoothly along the cross groove 24. The cross groove structure is used to guide the path of the scribing tool, so it is necessary to ensure that the surface of the groove is unobstructed.

[0066] Scribe along the cross groove 24: Place the scribing tool at the starting point of the cross groove, and move the scribing tool slowly and smoothly along the path of the groove to ensure that the scribing path is accurate. The cross groove structure can ensure the accuracy and consistency of the scribing process, avoiding deviation from the marked position.

[0067] Complete scribing and check results: After completing the scribing operation, carefully check the accuracy of the scribing to ensure that the scribing meets the test requirements and accurately marks the position of the strain gauge. If the scribing does not meet the requirements, adjust the clamps and repeat the scribing operation until the scribing position is accurate.

[0068] The stability and scribing precision of the device are verified by applying the device to scribe test on composite material test pieces of different sizes.

[0069] The above detailed the embodiments of the present application, and the principles and implementation modes of the present application were described by applying specific examples; the above embodiment descriptions are only used to help understand the method and core idea of the present application; meanwhile, for those skilled in the art, the specific implementation modes and application ranges will be changed according to the idea of the present application, and the above descriptions should not be understood as limiting the present application.

Claims

1. A strain gauge scribing aid device, characterized by, The device comprises a base, a thickness limiting clamp plate, a length limiting clamp plate and a width limiting clamp plate; The thickness limiting clamp plate comprises a thickness clamping surface and a sliding fixing surface, which are arranged perpendicularly to each other; the thickness clamping surface is used to press the test piece from the upper side of the thickness direction of the test piece; the sliding fixing surface is provided with two strip-shaped fixing holes; the thickness clamping surface is provided with a cross-shaped groove, which is used to position the scribed line position of the test piece; The length limiting clamp plate comprises a length clamping plate and a sliding support strip, the length clamping plate is located at the end of the sliding support strip; the length clamping plate supports the test piece from one side of the length direction of the test piece; The width limiting clamp plate comprises a sliding strip and a support strip, which are arranged perpendicularly to each other; the width limiting clamp plate is two, which clamps the test piece from both sides of the width direction of the test piece; The base comprises a base support surface and a base vertical surface, which are perpendicular to each other, and the intersection of the two planes forms a base long axis; The base support surface comprises a width limiting clamp plate sliding groove and a length limiting clamp plate sliding groove, the width limiting clamp plate sliding groove is used for the sliding and fixing of the width limiting clamp plate, and the length limiting clamp plate sliding groove is used for the sliding and fixing of the length limiting clamp plate; the base vertical surface comprises a thickness limiting clamp plate fixing sliding groove, which is used for the fixing and sliding of the thickness limiting clamp plate; the setting direction of the width limiting clamp plate sliding groove is parallel to the base long axis, the direction of the length limiting clamp plate sliding groove is perpendicular to the base long axis, and the direction of the thickness limiting clamp plate fixing sliding groove is perpendicular to the base long axis.

2. The scribe aid of claim 1, wherein The base is a cuboid structure, the base support surface is one long side surface of the cuboid structure, the long side surface is one side surface of the long side direction of the cuboid structure, and the base vertical surface is an adjacent long side surface of the base support surface.

3. The scribe aid of claim 2, wherein, One side of the middle part of the base support surface is provided with a notch groove, which is the moving space of the length clamping plate.

4. The scribe aid of claim 3, wherein The width limiting clamp plate sliding groove penetrates the notch groove, and the support strip is arranged on one side of the sliding strip.

5. The scribe aid of claim 4, wherein, The length limiting clamp plate sliding groove communicates with the notch groove.

6. The scribe aid of claim 5, wherein, The thickness clamping surface is provided with a square opening one, and the sliding fixing surface is provided with a square opening two, the square opening one is used to provide the length clamping plate moving space, and the square opening two is used to provide the sliding support strip sliding space.

7. The scribe aid of claim 6, wherein Two strip-shaped fixing holes are located on both sides of the square opening two.

8. The scribe aid of claim 7, wherein, The thickness limiting clamp plate fixing sliding groove and the strip-shaped fixing hole correspond to each other, which is used to fix the thickness limiting clamp plate to the base vertical surface.

9. The scribe aid of claim 8, wherein, The sliding support strip is provided with a strip-shaped groove, which is used to fix the sliding support strip in the length limiting clamp plate sliding groove.

10. The scribe aid of claim 9, wherein, The cross-shaped groove is three.

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