A tool for measuring the structure of soft materials in cavities

Abstract

The present invention discloses a tool for measuring a soft material structure in an inner cavity, and relates to the field of soft material structure measurement tooling, including a centerline measurement component and a connector measurement component, to ensure that the outer shape and position dimensions of the potting body meet the requirements, the centerline measurement component includes a first measurement base, a clamping seat and a dial indicator, the first measurement base is provided with a first measurement groove at the bottom, which is used for matching and clamping with the potting body shell, the dial indicator is fixedly connected to the first measurement base through the clamping seat, and its measuring rod extends downward into the first measurement groove; the connector measurement component includes a second measurement base and a slider, the slider is matched and inserted in the U-shaped inner cavity of the second measurement base, the bottom of the slider is provided with a second measurement groove for matching and clamping the potting body shell, and a long groove for matching and inserting the connector in the shell is vertically provided on the slider along its sliding direction. The present invention has a simple structure and is easy to operate, with small errors and consistent reference positions, which ensures the stability and accuracy of the measurement.

Description

Technical Field

[0001] The invention belongs to the technical field of soft material structure measurement tooling, and in particular relates to a tool for measuring an inner cavity soft material structure. Background Art

[0002] A semi-open thin-walled housing uses high-temperature resistant silicone resin insulation materials to pot and mold the communication cable harness. On the premise of ensuring that the outer size and position size of the potting body meet the requirements, it is also necessary to ensure that the size requirements of the cable connection plug extending outside the potting body from the reference position are met. In actual work, it is often encountered that the design dimensions on the harness drawings are often roughly marked, the reference points for measuring the harness dimensions are not clearly defined, and the process is often unclear about where to start measuring, which will directly affect the length of the open wire. Figure 5 The shell is made of hot stamping of sheet metal, and the bottom surface of the V-shaped shell has a certain amount of deformation, so it is not suitable as a measurement reference. The shell wall is thin, slender, and has a certain degree of natural curvature in the length direction. The inclined surfaces on both sides are not suitable as a measurement reference; the folded edge area on both sides is narrow, slender, and non-planar, and is also not suitable as a measurement reference. Although the commonly used caliper measuring tools meet the accuracy requirements, it is not easy to obtain accurate and stable readings in contact test measurements due to the low hardness of the soft material; due to the uncertainty of the measurement reference surface, the thickness micrometer, depth micrometer, etc. cannot meet the use requirements; although the tape measure steel ruler is easy to measure, the measurement accuracy does not meet the requirements; the dimensions required in the drawings cannot be directly measured using measuring tools, which is not convenient for inspection operations; the communication cable harness outside the potted body cannot accurately measure the distance between the plug and the reference hole in an unrestrained free state. In addition, the different lengths of the plug harness increase the difficulty of measurement. Summary of the invention

[0003] In view of the defects and problems of existing measuring tools for thermal insulation materials formed by potting communication cable harnesses in open thin-walled cover shells, such as failure to meet use requirements, measurement accuracy not meeting requirements, dimensions required in drawings not being able to be directly measured using measuring tools, inconvenient inspection operations, inability to accurately measure the distance between the plug and the reference hole of the communication cable harness outside the potting body in an unrestrained free state, and the different lengths of the plug harnesses increasing the difficulty of measurement, the present invention provides a tool for measuring the soft material structure of the inner cavity.

[0004] The solution adopted by the present invention to solve its technical problem is: a tool for measuring the inner cavity soft material structure, including a centerline measuring component and a connector measuring component, the centerline measuring component including a first measuring base, a clamping seat and a dial indicator, the first measuring base is provided with a first measuring groove at the bottom for matching and clamping with the cable harness potting body shell, the clamping seat is installed at the end of the upper end surface of the first measuring base, a positioning groove is provided on the first measuring base close to the clamping seat and corresponding to the first measuring groove, the positioning groove is communicated with the first measuring groove, the dial indicator is fixedly connected to the first measuring base through the clamping seat, and the measuring rod at the output end of the dial indicator passes downward through the positioning groove and extends into the first measuring groove, The reference surface where the front end face of the measuring rod contacts the side of the positioning groove away from the clamping seat is the required theoretical center line; the connector measuring assembly includes a second measuring base and a slider, the second measuring base is provided with a positioning screw hole, which is used to install the positioning screw corresponding to the hole on the boss in the shell as the zero position, the slider is matched and inserted in the U-shaped inner cavity of the second measuring base, the bottom of the slider is provided with a second measuring groove for matching the cable harness potting body shell, and a long groove is vertically provided on the slider along its sliding direction, the long groove penetrates the second measuring groove downward, and is used for matching and inserting the connector in the shell, and scale lines are symmetrically provided on the second measuring base on both sides of the center line of the long groove for measuring the length of the connector.

[0005] As a preferred technical solution of the present invention, a counterweight block is fixed to the tail end of the first measuring base to ensure the stability of the centerline measuring assembly, thereby reducing the measurement error of the dial indicator.

[0006] As a preferred technical solution of the present invention, a mounting hole is provided in the vertical direction on the first measuring base between the measuring rod at the output end of the dial indicator and the counterweight block, so as to form a measurement reference after the first measuring groove at the bottom of the first measuring base is matched and clamped with the outer shell of the cable harness potting body, and the side of the mounting hole close to the counterweight block is fitted with the edge of the shell.

[0007] As a preferred technical solution of the present invention, a connecting screw hole is provided on one side of the sliding block close to the positioning screw hole for matching with the push-pull device hook connection.

[0008] As a preferred technical solution of the present invention, connecting holes are symmetrically provided on the sliders on both sides of the long slot, which are used to fix the connector after the connector is matched and inserted into the long slot, so as to avoid instability in connector position measurement caused by unfixed and twisted cables.

[0009] As a preferred technical solution of the present invention, the second measuring base is provided with a scale, and marking lines are symmetrically provided on the sliders on both sides of the center line of the long groove, and the scale corresponding to the marking lines during the measurement process is the size to be obtained.

[0010] As a preferred technical solution of the present invention, the positioning screw hole on the second measuring base corresponds to the hole on the boss inside the shell. The hole on the boss inside the shell is used as the measurement reference, and a spherical screw is used for positioning to eliminate the positioning deviation caused by the boss aperture processing error.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can be applied to the measurement of soft materials by setting a centerline measurement component, the operation is simple, the measurement value is easy to read, the error value meets the required value, the reference position is consistent, the natural deformation of the thin-walled cover shell in the length direction is avoided, and the manual measurement error is avoided; the connector measurement component is set to be applicable to the measurement of the relative reference hole position of the communication cable connector, the error is small, and the measurement deviation caused by the uncertainty of the measurement reference is avoided; the present invention sets a dial indicator, the force drop is not more than 0.4N, the deformation problem of the measured part will not occur, and the stability and accuracy of the force measurement are guaranteed; the boss hole on the shell and the positioning screw hole on the connector measurement component are used as the measurement The measurement reference is provided, and the spherical screw is used for positioning, which can minimize the positioning deviation caused by the boss aperture processing error; by snap-fitting the shell and the second measuring base, the fit with the shell folded edge is ensured, and the parallel error of the slider relative to the shell is reduced; by fixedly connecting the connector to the slider, the instability of the connector position measurement caused by the unfixed and twisted cable is eliminated. The structure of the present invention is simple and easy to operate, which ensures the objective stability of the measurement quality data collection, increases the reliability and uniformity of product inspection, and simplifies the measurement difficulty caused by many factors, so as to determine the size of the communication cable harness potting body in the inner cavity of the semi-open thin-walled cover shell, and ensure that the outer size and position size of the potting body meet the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the centerline measurement assembly of the present invention;

[0013] Figure 2 It is a schematic diagram of the structure of the connector measurement assembly of the present invention;

[0014] Figure 3 It is a structural schematic diagram of the midline measurement assembly of the present invention during measurement;

[0015] Figure 4 It is a schematic diagram of the top view of the structure of the connector measuring assembly of the present invention during measurement;

[0016] Figure 5It is a schematic diagram of the cross-sectional structure of the connector measurement assembly of the present invention during measurement.

[0017] In the figure: a first measuring base 1, a measuring rod 2, a clamping base 3, a dial indicator 4, a counterweight 5, a positioning screw hole 6, a second measuring base 7, a slider 8, a connecting screw hole 9, a housing 10, a cable 11, a potting body 12, a connector 13, a boss 14, a first measuring groove 15, a positioning groove 16, a second measuring groove 17, a mounting hole 18, a connecting hole 19, a marking line 20, and a long groove 21. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] See also Figure 1-5 The present invention provides a tool for measuring the soft material structure of an inner cavity to determine the size of a communication cable harness potting body in the inner cavity of a semi-open thin-walled cover shell, ensuring that the outer shape and position dimensions of the potting body meet the requirements.

[0020] Embodiment 1:

[0021] The tool for measuring the inner cavity soft material structure provided by the present invention consists of two parts: a centerline measurement component and a connector measurement component. The centerline measurement component is used to measure the width of the potting body 12 in the semi-open thin-walled cover shell 10 and confirm its shape and position error, while the connector measurement component is used to measure the position of the communication cable harness connector relative to the reference hole and accurately obtain the position size of the measuring plug from the reference hole. Figure 1 and Figure 3 The centerline measurement assembly includes a first measuring base 1, a clamping base 3 and a dial indicator 4. A first measuring groove 15 is provided at the bottom of the first measuring base 1 for matching and clamping with the cable harness potting body shell, wherein the inner cavity of the first measuring groove is just clamped and fixed with the shell 10. A clamping base 3 is provided at the end of the upper end surface of the first measuring base. The clamping base 3 is composed of an upper and lower part, with a through hole in the middle for the measuring rod 2 on the dial indicator 4 to match and pass through, and the upper and lower parts of the clamping base are screwed and fixed by bolts to lock the dial indicator 4 to calibrate the dial indicator. A counterweight is fixed at the other end of the first measuring base 1. Block 5 is used to ensure the stability of the centerline measurement assembly, thereby reducing the measurement error of the dial gauge; positioning grooves 16 and mounting holes 18 are arranged at intervals on the first measuring base 1, and the positioning grooves 16 and mounting holes 18 are connected with the first measuring groove 15, and the measuring rod 2 on the dial gauge is located in the positioning groove 16 and extends downward in the vertical direction into the first measuring groove 15, and when the dial gauge is calibrated, the reference surface where the front end face of the measuring rod 2 contacts the side of the positioning groove away from the clamping seat is the required theoretical centerline, and the pointer on the dial gauge is adjusted to rotate 1-2 circles to ensure that it is within the appropriate range, see Figure 3When the housing 10 is matched and mounted in the first measuring groove 15, one side of the housing 10 can extend into the mounting hole 18 and fit with the side of the mounting hole close to the counterweight block, thereby forming a measurement reference. At this time, by adjusting the position of the measuring rod 2 to fit with the potting body 12, the two pointers on the dial indicator are read, and the width of the potting body is obtained by adding the two readings. Measuring with the above-mentioned centerline measuring assembly can ensure that the measured part will not be deformed, ensure the consistency of the reference position, meet the measurement requirements, avoid manual measurement errors, and is suitable for measuring the shape of the above-mentioned materials.

[0022] See also Figure 2 , Figure 4 and Figure 5 The connector measuring assembly includes a second measuring base 7 and a slider 8. The second measuring base 7 is in a U-shaped structure, and the slider 8 is matched and slidably connected in its U-shaped inner cavity. A second measuring groove 17 is provided at the bottom of the slider 8 for matching the cable harness potting body shell. A positioning screw hole 6 is also provided on the second measuring base 7. The positioning screw hole corresponds to the hole on the boss 14 in the shell. The positioning screw hole is used as the zero position, and the hole on the boss in the shell is used as the measurement reference. A spherical screw is used for positioning to eliminate the positioning deviation caused by the boss aperture processing error. A long groove 21 is vertically provided on the slider along its sliding direction. The long groove penetrates downward into the second measuring groove 17 for matching and inserting the connector 13 in the shell. The sliders on both sides of the long groove are symmetrical. A connecting hole 19 is provided for fixing the connector after the connector is matched and inserted into the long slot, so as to avoid instability in the connector position measurement caused by the unfixed and twisted cable. 30±5mm scale lines are symmetrically provided on the second measuring base on both sides of the center line of the long slot, and marking lines 20 are symmetrically provided on the sliders on both sides of the center line of the long slot, so that the scale corresponding to the marking line is the size to be obtained in the process of measuring the length dimension of the connector. A connecting screw hole is provided on one side of the slider close to the positioning screw hole for connecting with the push-pull device. The push-pull device is connected to the connecting screw hole on the slider through the buckle, so that the slider moves left or right. When the value displayed by the push-pull device reaches or approaches the specified tension value, the scale value corresponding to the marking line can be read.

[0023] When the present invention is used in practice, the dial indicator of the centerline measuring assembly is first calibrated, and then the first measuring groove is matched and fixed with the cable harness potting body shell by pushing the measuring rod, so that one side of the shell 10 can extend into the mounting hole 18 and fit with the side of the mounting hole close to the counterweight block, thereby forming a measurement reference, and then the measuring rod is loosened so that the measuring rod fits with the potting body. At this time, the reading on the dial indicator is read, and the width of the potting body 12 in the semi-open thin-walled cover shell 10 can be calculated and its shape and position error can be confirmed; then the connector is measured, and the connector is first matched and inserted and fixed with the long groove on the slider, and then the shell is matched and clamped with the second measuring groove at the lower end of the slider, and the positioning screw is adjusted to make it contact with the hole on the shell boss for positioning, and then the push-pull device is connected with the connecting screw hole on the slider by hooking, and the slider is slid to the left or right according to the actual situation. When the push-pull device displays a value that reaches or approaches the specified tension value, the scale value corresponding to the marking line can be read to measure the position of the communication cable harness connector relative to the reference hole, and the position size of the measuring plug from the reference hole can be accurately obtained.

[0024] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for measuring the structure of soft materials in the inner cavity, characterized in that: It includes a centerline measuring component and a connector measuring component, the centerline measuring component includes a first measuring base, a clamping base and a dial indicator, the first measuring base is provided with a first measuring groove at the bottom for matching and clamping with the cable harness potting body shell, the clamping base is installed at the end of the upper end surface of the first measuring base, a positioning groove is provided on the first measuring base close to the clamping base and corresponding to the first measuring groove, the positioning groove is communicated with the first measuring groove, the dial indicator is fixedly connected to the first measuring base through the clamping base, and the measuring rod at the output end of the dial indicator passes downward through the positioning groove and extends into the first measuring groove, and the reference surface where the front end surface of the measuring rod contacts the side of the positioning groove away from the clamping base is The required theoretical center line; the connector measuring assembly includes a second measuring base and a slider, the second measuring base is provided with a positioning screw hole for installing a positioning screw corresponding to the hole on the inner boss of the shell as a zero position, and the hole on the inner boss of the shell is used as a measuring reference, the slider is matched and inserted in the U-shaped inner cavity of the second measuring base, the bottom of the slider is provided with a second measuring groove for matching the plug-in cable harness potting body shell, and a long groove is vertically provided on the slider along its sliding direction, the long groove runs through the second measuring groove downward, and is used for matching and inserting the connector in the shell, and the second measuring base on both sides of the center line of the long groove is symmetrically provided with scale lines for measuring the position size of the connector from the hole on the boss; A counterweight is fixed at the tail end of the first measuring base to ensure the stability of the centerline measuring assembly and reduce the measurement error of the dial indicator; a mounting hole is provided in the vertical direction on the first measuring base between the measuring rod at the output end of the dial indicator and the counterweight, which is used to form a measurement reference by fitting the side of the mounting hole close to the counterweight with the edge of the shell after the first measuring groove at the bottom of the first measuring base is matched and clamped with the outer shell of the cable harness potting body.

2. The tool for measuring the soft material structure of the inner cavity according to claim 1, characterized in that: A connecting screw hole is provided on one side of the sliding block close to the positioning screw hole, which is used to cooperate with the push-pull device hook connection.

3. The tool for measuring the soft material structure of the inner cavity according to claim 1, characterized in that: The sliders on both sides of the long slot are symmetrically provided with connection holes, which are used to fix the connector after the connector is matched and inserted into the long slot, so as to avoid instability in connector position measurement caused by unfixed and twisted cables.

4. The tool for measuring the soft material structure of the inner cavity according to claim 1, characterized in that: The second measuring base is provided with a scale, and marking lines are symmetrically provided on the sliders on both sides of the center line of the long groove, and the scale corresponding to the marking lines during the measurement process is the size to be obtained.

5. The tool for measuring the inner cavity soft material structure according to claim 1, characterized in that: The positioning screw hole on the second measuring base corresponds to the hole on the boss in the shell, and a spherical screw is used for positioning to eliminate the positioning deviation caused by the boss aperture machining error.

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