Device for quickly positioning pasting position of strain gauge

Abstract

The utility model discloses a device for rapidly positioning the pasting position of a strain gauge, which comprises a frame body, a lead screw is rotatably connected to the frame body, a first sliding block and a second sliding block are in threaded connection to the lead screw, a first threaded hole matched with the lead screw is formed in the first sliding block, the first threaded hole is a left-hand thread, and a second threaded hole matched with the lead screw is formed in the second sliding block. A second threaded hole matched with the lead screw is formed in the second sliding block, the second threaded hole is a right-hand thread, a marking assembly is arranged between the first sliding block and the second sliding block, the marking assembly is fixedly connected to the frame body, the distance between the marking assembly and the first sliding block is equal to that between the marking assembly and the second sliding block, and the marking assembly can measure and mark the center point of the composite material sample plate. Compared with the prior art, the device for rapidly positioning the pasting position of the strain gauge does not need to record the length value and the width value of the composite material sample plate when measuring the central point of the composite material sample plate, can effectively improve the working efficiency and the measurement precision, and can mark the central point of the composite material sample plate in real time.

Description

Technical Field

[0001] The utility model belongs to the technical field of devices for the bonding position of strain gauges, and particularly relates to a device for quickly positioning the bonding position of strain gauges. Background Art

[0002] Before using composite materials, it is necessary to test the thermomechanical properties of the materials. Among various testing methods, the measurement method using resistance strain gauges is a traditional means.

[0003] During actual measurement, it is necessary to position the composite material. Currently, the positioning lines of the composite material template are mainly obtained by measuring the midpoints of the length and width of the composite material, and then connecting the midpoint in the length direction and the midpoint in the width direction into a straight line respectively. The point where the two straight lines intersect perpendicularly is the center point of the composite material template.

[0004] For the currently used method of measuring the center point of the composite material template, during the measurement process, it is necessary to record the length and width values of the measured composite material template, and then the midpoints of the length and width of the composite material template can be obtained through calculation. This measurement method has low work efficiency, is prone to errors, and cannot mark the measured center point in real time.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a device for quickly positioning the bonding position of strain gauges.

[0006] The information disclosed in this background art section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a device for quickly positioning the bonding position of strain gauges, which can be used to solve the above problems.

[0008] To achieve the above purpose, a specific embodiment of the utility model provides a device for quickly positioning the bonding position of strain gauges, including a frame body. A lead screw is rotatably connected to the frame body. A first slider and a second slider are threadedly connected to the lead screw. A first threaded hole matching the lead screw is provided on the first slider, and the first threaded hole is a left-handed thread. A second threaded hole matching the lead screw is provided on the second slider, and the second threaded hole is a right-handed thread. A marking assembly is provided between the first slider and the second slider. The marking assembly is fixedly connected to the frame body, and the distances between the marking assembly and the first slider and the second slider are equal. The marking assembly can measure and mark the center point of the composite material template.

[0009] In one or more embodiments of the present utility model, the marking assembly includes a fixed block, a through hole is provided on the fixed block, the lead screw passes through the through hole, and a cutting tool is installed on the fixed block.

[0010] In one or more embodiments of the present utility model, a first sleeve is fixedly installed on the fixed block, a placement groove matching the first sleeve is provided on the fixed block, the first sleeve is fixedly connected in the placement groove, a second sleeve is slidably connected in the first sleeve, a connecting strip is fixedly connected to the second sleeve, and the cutting tool is fixedly connected to the connecting strip.

[0011] In one or more embodiments of the present utility model, a pressing plate is fixedly connected to the second sleeve.

[0012] In one or more embodiments of the present utility model, a spring is fixedly connected to the bottom wall of the first sleeve, and one end of the spring away from the first sleeve is fixedly connected to the pressing plate.

[0013] In one or more embodiments of the present utility model, a through groove is provided on the fixed block, the through groove communicates with the placement groove, and the connecting strip passes through the through groove.

[0014] In one or more embodiments of the present utility model, a chute matching the first slider and the second slider is provided on the frame body.

[0015] In one or more embodiments of the present utility model, the first slider and the second slider are T-shaped.

[0016] In one or more embodiments of the present utility model, a first baffle is integrally formed on the first slider, a first limiting plate is fixedly connected to the first baffle, a second baffle is integrally formed on the second slider, and a second limiting plate is fixedly connected to the second baffle.

[0017] In one or more embodiments of the present utility model, a bearing is installed on the frame body, the lead screw passes through the bearing, the lead screw is rotationally connected to the frame body through the bearing, one end of the lead screw is fixedly connected to a wheel disc, and a crank is provided on the wheel disc.

[0018] Compared with the prior art, for a device for quickly positioning the bonding position of a strain gauge in the present utility model, when measuring the center point of a composite material sample, it is not necessary to record the length and width values of the composite material sample, which can effectively improve the working efficiency and measurement accuracy, and can perform real-time marking on the center point of the composite material sample. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the attached drawings required in the description of the embodiments or the prior art. Obviously, the attached drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings.

[0020] Figure 1 Structural schematic diagram of a device for quickly positioning the bonding position of a strain gauge in an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the partial cross-sectional state of a device for quickly positioning the bonding position of a strain gauge in an embodiment of the present invention;

[0022] Figure 3 Structural schematic diagram of the marking component of a device for quickly positioning the bonding position of a strain gauge in an embodiment of the present invention;

[0023] Figure 4 Cross-sectional view of the marking component of a device for quickly positioning the bonding position of a strain gauge in an embodiment of the present invention;

[0024] Figure 5 Structural schematic diagram of the slider of a device for quickly positioning the bonding position of a strain gauge in an embodiment of the present invention;

[0025] Figure 6 Usage state of a device for quickly positioning the bonding position of a strain gauge in an embodiment of the present invention Figure 1 ;

[0026] Figure 7 Usage state of a device for quickly positioning the bonding position of a strain gauge in an embodiment of the present invention Figure 2 。

[0027] Main reference numeral description:

[0028] 1. Frame body; 101. Slide groove; 11. Bearing; 2. Lead screw; 3. Disk; 31. Crank; 4. First slider; 401. First threaded hole; 41. First baffle; 42. First limiting plate; 5. Second slider; 501. Second threaded hole; 51. Second baffle; 52. Second limiting plate; 6. Fixed block; 601. Through hole; 602. Placing groove; 603. Through slot; 61. First sleeve; 611. Spring; 62. Second sleeve; 621. Pressing plate; 63. Connecting bar; 64. Cutting tool; 7. Composite material template. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] As Figure 1 , Figure 2 , Figure 5 and Figure 6 shown, a device for quickly positioning the bonding position of strain gauges in an embodiment of the present utility model includes a frame body 1. A pair of side walls on the frame body 1 are respectively inlaid with bearings 11. A lead screw 2 passes through the bearings 11, and the lead screw 2 is rotationally connected to the frame body 1 through the bearings 11. One end of the lead screw 2 is fixedly connected to a wheel disc 3, and a crank 31 is provided on the wheel disc 3. Specifically, when the crank 31 is shaken, the wheel disc 3 will drive the lead screw 2 to rotate when the wheel disc 3 rotates. The crank 31 is eccentrically installed on the wheel disc 3, increasing the torque when rotating the lead screw 2, making it more labor-saving when shaking the crank 31.

[0031] A first slider 4 and a second slider 5 are threadedly connected to the lead screw 2. The first slider 4 and the second slider 5 are symmetrically arranged on the lead screw 2. A first threaded hole 401 matching the lead screw 2 is opened on the first slider 4, and the first threaded hole 401 is a left-handed thread. A second threaded hole 501 matching the lead screw 2 is opened on the second slider 5, and the second threaded hole 501 is a right-handed thread. A marking assembly is provided between the first slider 4 and the second slider 5. The marking assembly is welded to the frame body 1. The marking assembly includes a fixing block 6. A through hole 601 is opened on the fixing block 6, and the lead screw 2 passes through the through hole 601. A cutter 64 is provided on the fixing block 6, and the cutter 64 is installed at the center point of the fixing block 6.

[0032] Specifically, the pitches of the first threaded hole 401 and the second threaded hole 501 are equal. When the lead screw 2 rotates clockwise, the first slider 4 and the second slider 5 will move closer together. When the lead screw 2 rotates counterclockwise, the first slider 4 and the second slider 5 gradually separate. Since the first slider 4 and the second slider 5 are symmetrically arranged on both sides of the fixing block 6, the distances between the first slider 4 and the second slider 5 from the fixing block 6 are always equal. After the first slider 4 and the second slider 5 gradually move closer, the cutter 64 can measure the midpoint of the composite material template 7 placed between the first slider 4 and the second slider 5.

[0033] To keep the first slider 4 and the second slider 5 stable and enable the first slider 4 and the second slider 5 to move linearly without flipping. A chute 101 is formed on the bottom wall of the frame body 1. The first slider 4 and the second slider 5 are slidably connected in the chute 101, and the first slider 4 and the second slider 5 are T-shaped. In this way, the first slider 4 and the second slider 5 can be self-limited. When the lead screw 2 rotates, the first slider 4 and the second slider 5 will only move linearly on the lead screw 2 and will not flip.

[0034] Furthermore, a first baffle 41 is integrally formed on the first slider 4, and a first limiting plate 42 is bonded to the first baffle 41. A second baffle 51 is integrally formed on the second slider 5, and a second limiting plate 52 is bonded to the second baffle 51. The first limiting plate 42 and the second limiting plate 52 can limit the composite material template 7.

[0035] Specifically, place the composite material template 7 on the frame body 1, make the two side walls of the composite material template 7 abut against the first baffle 41 and the first limiting plate 42 respectively, and rotate the crank 31 clockwise. The first slider 4 and the second slider 5 gradually approach under the action of the threaded meshing transmission of the lead screw 2, and the composite material template 7 can be clamped. At this time, the composite material template 7 can be just below the cutting tool 64, and the cutting tool 64 can measure the composite material template 7.

[0036] After the cutting tool 64 measures the center position of the composite material template 7, in order to enable the cutting tool 64 to mark the composite material template 7, as Figure 3 、 Figure 4 and Figure 6 shown. A placement groove 602 is formed on the fixed block 6. A first sleeve 61 is bonded in the placement groove 602. A second sleeve 62 is slidably connected in the first sleeve 61. A pressing plate 621 is fixedly connected to the second sleeve 62. A spring 611 is welded to the bottom wall of the first sleeve 61, and one end of the spring 611 away from the first sleeve 61 is welded to the pressing plate 621. A through groove 603 is formed on the fixed block 6, and the through groove 603 is communicated with the placement groove 602. A connecting strip 63 is fixedly connected to the second sleeve 62. The connecting strip 63 passes through the through groove 603, and the cutting tool 64 is fixedly connected to the connecting strip 63.

[0037] Specifically, press down the pressing plate 621, the second sleeve 62 drives the connecting strip 63 to slide downward, and the cutting tool 64 can press on the composite material template 7 to be measured to mark the composite material template 7.

[0038] It should be noted that in order to control the depth of the crimping of the composite material sample 7 by the cutting tool 64, the distance between the pressing plate 621 and the upper end surface of the fixed block 6 is matched with the distance between the cutting tool 64 and the composite material sample 7. When the pressing plate 621 is pressed, the cutting tool 64 can just form a visible indentation on the surface of the composite material sample 7 without damaging the structural strength of the composite material sample 7.

[0039] Furthermore, the height of the through groove 603 is greater than the distance between the pressing plate 621 and the upper end surface of the fixed block 6 to prevent the cutting tool 64 from being unable to mark the composite material sample 7. At the same time, the width of the through groove 603 is matched with the width of the connecting strip 63. Specifically, when the pressing plate 621 is pressed, the through groove 603 can limit the connecting strip 63 so that the connecting strip 63 can only move in the vertical direction, which can prevent the second sleeve 62 from rotating when the pressing plate 621 is pressed, resulting in an incorrect position marked by the cutting tool 64.

[0040] During use, place the composite material sample 7 on the bottom wall of the frame body 1 in the length direction, rotate the crank 31 clockwise, the first slider 4 and the second slider 5 gradually approach each other. When the first baffle 41 and the second baffle 51 clamp the composite material sample 7, the composite material sample 7 is just below the cutting tool 64. At this time, press the pressing plate 621, and the cutting tool 64 can mark and score the composite material sample 7.

[0041] After the center line in the length direction of the composite material sample 7 is marked, rotate the crank 31 counterclockwise, and the first slider 4 and the second slider 5 gradually separate, leaving a rotating space for the composite material sample 7. Then rotate the composite material sample 7, measure the center line in the width direction of the composite material sample 7, and mark and score the center line in the width direction of the composite material sample 7.

[0042] After the center lines in the length and width directions of the composite material sample 7 are marked, the intersection of the two center lines is the center point of the composite material sample 7. In this way, the position where the strain gauge needs to be pasted is measured.

[0043] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed by the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for quickly locating the sticking position of a strain gauge, characterized in that: It includes a frame body, which is rotatably connected to a lead screw, and a first slider and a second slider are threadedly connected to the lead screw, the first slider is provided with a first threaded hole matching the lead screw, and the first threaded hole is a left-handed thread, the second slider is provided with a second threaded hole matching the lead screw, and the second threaded hole is a right-handed thread, a marking component is provided between the first slider and the second slider, the marking component is fixedly connected to the frame body, the distance between the marking component and the first slider and the second slider is equal, and the marking component can measure and mark the center point of the composite material sample.

2. The device for quickly locating the sticking position of a strain gauge according to claim 1, characterized in that: The marking component comprises a fixed block, a through hole is formed on the fixed block, the lead screw passes through the through hole, and a carving knife is installed on the fixed block.

3. The device for quickly locating the sticking position of a strain gauge according to claim 2, characterized in that: A first sleeve is fixedly mounted on the fixed block, a placement groove matching the first sleeve is opened on the fixed block, the first sleeve is fixedly connected in the placement groove, a second sleeve is slidably connected in the first sleeve, a connecting strip is fixedly connected to the second sleeve, and the engraving knife is fixedly connected to the connecting strip.

4. The device for quickly locating the sticking position of a strain gauge according to claim 3, characterized in that: The second sleeve is fixedly connected with a pressing plate.

5. The device for quickly locating the sticking position of a strain gauge according to claim 4, characterized in that: A spring is fixedly connected to the bottom wall of the first sleeve, and one end of the spring away from the first sleeve is fixedly connected to the pressure plate.

6. The device for quickly locating the sticking position of a strain gauge according to claim 3, characterized in that: The fixing block is provided with a through slot, the through slot is communicated with the placement slot, and the connecting strip passes through the through slot.

7. The device for quickly locating the sticking position of a strain gauge according to claim 1, characterized in that: The frame body is provided with a sliding groove matching the first sliding block and the second sliding block.

8. The device for quickly locating the sticking position of a strain gauge according to claim 7, characterized in that: The first sliding block and the second sliding block are T-shaped.

9. The device for quickly locating the sticking position of a strain gauge according to claim 7, characterized in that: A first baffle is integrally formed on the first sliding block, and a first limit plate is fixedly connected to the first baffle. A second baffle is integrally formed on the second sliding block, and a second limit plate is fixedly connected to the second baffle.

10. A device for quickly locating a strain gauge pasting position according to any one of claims 1 to 9, characterized in that: A bearing is installed on the frame, and the lead screw passes through the bearing. The lead screw is rotatably connected to the frame through the bearing. One end of the lead screw is fixedly connected to a wheel disc, and a crank is provided on the wheel disc.

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