CN116952118A - Digital tool for gap measurement and measurement method - Google Patents
Digital tool for gap measurement and measurement method Download PDFInfo
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- CN116952118A CN116952118A CN202310943955.XA CN202310943955A CN116952118A CN 116952118 A CN116952118 A CN 116952118A CN 202310943955 A CN202310943955 A CN 202310943955A CN 116952118 A CN116952118 A CN 116952118A
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- 238000005259 measurement Methods 0.000 title claims abstract description 101
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
Abstract
The invention belongs to the technical field of gap measurement in the assembly process of aviation products, and relates to a digital tool and a digital measurement method for gap measurement. The tool is simple to operate, can directly measure the gap display measured value of a workpiece, avoids measurement errors caused by intermittent measurement points of a steel plate ruler and a feeler gauge, can be applied to various gap measurement areas, and aims to reduce interference of human factors on measurement data and judgment of results. Meanwhile, the method can also be applied to operators and self-checking/mutual checking links, can quickly find out problems, immediately remove faults, prevent the problem products from flowing into the next production link, control the problem from the source, avoid the occurrence of the problem, reduce the quality problems found by inspection staff, treat the quality problems and the links of the follow-up operators for troubleshooting, shorten the production period, save the labor cost and prevent the time waste.
Description
Technical Field
The invention belongs to the technical field of gap measurement in the assembly process of aviation products, and relates to a digital tool and a digital measurement method for gap measurement.
Background
Along with the rapid development of the times and industry, the requirements on the assembly quality and the assembly precision of the aeronautical products are higher and higher, no matter the requirements on the aerodynamic appearance of the aeroplane, the stealth performance of the aeroplane or the tightness of the aircraft flap are in a dense and inseparable relation with the gap between the outer surface skin of the aeroplane, the control of the gap between the skin and the gap directly influences the flight safety of the aeroplane, and along with the higher and higher performance requirements of the aeronautical products, the requirements on the aerodynamic appearance gap of the products are higher and higher, and the gap between the aerodynamic appearance of the aeroplane is increased from 0.30mm to 0.10mm, because the precision requirement is too high, the operation of the conventional measuring tool is complex, the error accumulation is easy to cause, the precision can not reach the actual measurement requirement, and the workshop production period and the assembly quality precision are seriously influenced.
In the process of assembling aviation products, repeated measurement (rough machining and finish machining) is needed for data controlled by some special processes, at present, a special measuring tool is short, the measurement accuracy cannot meet the measurement requirement, the measurement difficulty is high, digital measurement cannot be realized, and the conventional measuring tool is used for the common measuring mode, such as: general tools such as clearance gauge, slide caliper and steel sheet chi are measured, and difficult operation, precision are not high, human error is great, only can realize qualitative compliance judgement, can't realize the quantitative measurement of numerical value, and some positions cause the error accumulation (reading error and operating error) because of measuring the space is uncovered, lead to measuring result phase difference great, say: currently, the mode of checking the dimensions of the fuselage macrocomponent joints is measured with vernier calipers, namely: and checking by using a checking and measuring tool, and comparing the measured data with standard data to judge whether the size is qualified or not. In operation, the edge distance of the joint is measured by using a vernier caliper, the numerical value of the edge distance of the joint is measured by using a vernier caliper clamping foot, recording is completed, and finally the recorded numerical value is compared with a standard numerical value to judge whether the specified requirement is met. The method has the advantages that the real size of the real object can be obtained, the measurement efficiency is low, the method cannot adapt to repeated inspection for many times, the method is greatly influenced by human factors, for example, errors are easy to occur in the aspects of tool use, reading, recording and the like, the proficiency of the human operation can cause inaccurate data, and the work efficiency is also influenced by repeated measurement and verification.
In order to facilitate the measurement of data by field inspectors, the invention provides a digital special measuring tool and a digital special measuring method which are specially used for measuring gaps, the operation is simple and convenient, the working efficiency and the measuring precision of the field inspectors can be effectively improved, and the errors caused by manual operation are reduced.
Disclosure of Invention
The invention provides a digital tool and a digital measuring method for gap measurement, which mainly aim to overcome the defects of the conventional measuring tool and the conventional measuring method, realize the digital measurement of the actual measurement value of the gap and facilitate the improvement of the measurement precision and the measurement efficiency. The conventional measuring tool is complex in operation and low in measuring precision, is extremely inconvenient in many measuring uses, provides a special measuring tool for digital gap measurement for field inspection technicians, and can realize measurement in qualitative and quantitative modes of measured values so as to solve the problems in the technical background.
In order to solve the technical problems, the invention adopts the following technical scheme:
a digital tool for clearance measurement comprises a structural part and an electric control part;
the structure part plays a role in realizing the functions of a supporting member and a measuring foundation, and comprises a meter body, a sensor connecting rod, a hollow connecting stud, a measuring main body shell, a spring, a fixed pin shaft, a bearing, a measuring needle, a gear, a rack, a meter body rear shell and a calibration ring gauge. The relation is shown in figure 1, figure 2, figure 3 and figure 4,
the meter body, the sensor connecting rod, the hollow connecting stud, the measuring main body shell and the meter body rear shell are sequentially connected, mainly play a supporting role, and complete the supporting and measuring functions of the electric control part;
the meter body and the rear shell of the meter body are manufactured by adopting PLA materials through 3D printing, are screwed and fixed by 4M 1.7 self-tapping screws, are internally provided with a sensor guide rod, a display screen, a recording button, a reset button, a switch button, a control module, a sensor, a power module, a charging module and a reserved position of a charging port, and realize the supporting function of the components;
the meter body and the measuring main body shell are connected by means of hollow connecting studs, the hollow connecting studs are screwed into the meter body and the measuring main body shell respectively, a cavity with a certain size is formed in the meter body and the measuring main body shell, the size of the cavity is in small clearance fit with the size of the sensor connecting rod so as to realize the fixing and guiding functions of the sensor connecting rod, a spring, a fixed pin shaft, a bearing, a measuring needle, a gear and a rack are used for realizing the measuring function, the gear is connected with the measuring main body shell by the bearing so as to fix the axis of the gear, the sensor connecting rod and the rack are fixedly connected by the fixed pin shaft so as to realize linear motion together, the spring is arranged between the rack and the measuring main body shell, rebound of the rack is realized, the measuring needle and the gear adopt a high-precision welding mode, the gear is accurately rotated along with rotation of the measuring needle, the gear and the rack are meshed, the movement of the rack drives the sensor connecting rod to synchronously move so as to realize the transmission of measuring values, and the calibration ring gauge is used for realizing the calibration of the measuring needle to be processed by a control module;
the electronic control part has the functions of measurement and numerical conversion, and comprises a sensor guide rod, a display screen, a recording button, a reset button, a switch button, a control module, a sensor, a power module, a charging module and a charging port, wherein the relation is shown in the attached drawings 1, 2 and 3, the electronic control part is supported by a meter body, the recording button, the reset button and the switch button adopt self-resetting movable buttons, the self-resetting movable buttons are connected to the control module through cables and are arranged at reserved positions of the meter body through self-contained nuts, the recording button mainly has the function of recording data, when one measuring period is finished, the recording button can be pressed down to stop the data on the display screen, the reset button mainly has the function of data recording and reading, when one measuring period is finished, the reset button is pressed down to realize data clearing when the next measuring period is needed, zero position display on the display screen is avoided to be repeatedly calibrated, the switch button is a power switch of a measuring tool, the self-locking reset button is adopted for the electrifying and closing functions of the whole electronic control system, 1 is pressed down to be a quantitative measuring channel, and after the measuring channel is pressed down to be fixed to a measuring channel, and the self-calibrating function is realized after the self-calibrating nut is pressed down, and the measuring channel is pressed down by the measuring channel, and the self-calibration is finished; the display screen is provided with an OLED display screen module with 0.91 inch, the module is in communication connection with the control module in an IIC data transmission mode, and is also arranged at a reserved opening position of the watch body, and is screwed and fixed by four M1.7 self-tapping screws for recording and displaying data; the sensor adopts a high-precision magnetic induction displacement sensor, the measuring range is 10mm, the resolution is 0.01mm, and a sensor guide rod is arranged in the sensor;
the sensor connecting rod transmits the measured displacement to the built-in sensor guide rod during measurement, the sensor acquires displacement data and transmits the displacement data to the control module for processing, as shown in figure 1,
measuring needle length l=10.0 mm, h Vertical dimension left/right For a measured value of 10.0 Sensor left/right ，
Gap size d=d 1 +D 2 ，
By means of trigonometric function relations
The conversion of data display is realized;
the control module comprises a singlechip, an analog-to-digital conversion device and a control element, wherein the singlechip adopts a minimum system board of an Atmega328 chip, is used for collecting displacement data of a sensor through built-in high-order AD conversion, converting the received analog quantity of the sensor into a digital signal, matching corresponding setting requirements of a recording button and a reset button, outputting and displaying the calculated actual numerical value on a display screen after program calculation, and is used for reading of a user. The power supply module adopts a direct current 3.7V lithium battery, so that the storage of electric quantity can be realized, repeated charging is avoided, the voltage is boosted to 5V output voltage through the boosting module, and the control module, the display screen and the sensor are powered; the charging module adopts TP4056 module, and is fixed through two M1.7 self-tapping screws installation, and rechargeable battery is connected to one end, and the mouth that charges is connected to the other end, can connect the data line for battery charging, satisfies the power consumption demand.
A measuring method of a digital tool for clearance measurement comprises the following steps:
the first step: firstly, wiping the surface of a tool by clean and soft cotton which does not fall off, checking whether the appearance of the tool is damaged, determining that factors which influence the calibration characteristic are not generated, pressing a switch button, reading whether a display screen is lightened, ensuring that each key is flexible and effective, ensuring whether a liquid crystal display screen is clear and stable, and ensuring that the numerical value of the display screen is not broken;
and a second step of: after the tool is taken out, a power switch button is pressed, a measuring unit of a measured object is selected, the tool is firstly held for carrying out the calibration work of the tool, a measuring needle of the measuring tool is put into a measuring calibration ring gauge for carrying out the calibration work, after the probe is stable, a reset button is pressed, whether the numerical value on the liquid crystal display screen is reset or not is read, the tool is taken down after the reset state is ensured, and the measuring work is ready to start;
thirdly, quantitatively judging: the power switch button is pressed down by 1 in the second step, a quantitative measuring channel is adopted, a measuring needle of a measuring tool is placed in a measured piece, the measuring needle moves and is transmitted to a displacement sensor, the displacement sensor transmits signals to an information processing chip, the signals are processed according to a digital conversion relation and then displayed on a liquid crystal display screen, the numerical value on the observation screen is stable and calms along with the continuous stability of the measuring needle, the central line of a shell of a measuring main body is parallel to the central line of an inner side piece and cannot incline during measurement, a sensor guide rod is ensured to move along the axial direction of a measuring rod during a plane measurement, the axial direction of the measuring rod is ensured to move along the axial direction of the measuring rod when the measuring rod is a cylindrical surface, a plurality of points are simultaneously measured, the accuracy of measured data is ensured, a recording button is pressed down, the measured numerical value is read out on the display screen, and the recording is performed;
fourth, qualitative judgment: the power switch button is pressed down at the second step, a qualitative measuring channel is adopted, a measuring needle of a measuring tool is placed in a measured piece, the measuring needle moves and is transmitted to a displacement sensor, the displacement sensor transmits signals to an information processing chip, the signals are processed according to a digital conversion relation and then displayed on a display screen, the numerical value on the display screen is observed to be calm along with the continuous stabilization of the measuring needle, when the measuring is performed, the central line of a shell of a measuring main body is parallel to the central line of an inner side piece and cannot be inclined, when a plane is measured, a sensor guide rod is ensured to move along the axial direction of a measuring rod, when the measuring is a cylindrical surface, the axial direction of the measuring rod is ensured to move, a plurality of points are measured at the same time, the accuracy of the measured data is ensured, a recording button is pressed down, and the consistency judgment of whether the measuring main body is qualified or not is read out on the liquid crystal display screen and recorded;
and fifthly, when the measurement is finished, the measuring needle is prevented from being quickly withdrawn, so that the pointer is prevented from being bent due to the fact that the inertia of the measuring needle for quickly rebounding is too large.
And sixthly, taking down the tool, cleaning the tool, resetting the tool after the display is closed, and placing the tool in the tool box. The tool is forbidden to be knocked, bumped and knocked, so that the part is prevented from being damaged or the measuring needle is prevented from being bent.
The beneficial effects of the invention are as follows:
the invention aims to provide a digital measuring tool for gap measurement for field inspectors, the tool is simple to operate, can directly measure workpiece gap display measured values, avoids measurement errors caused by intermittent measurement points of a steel plate ruler and a feeler gauge, can be applied to various gap measurement areas, adopts a singlechip chip with 10-bit ADC analog-to-digital conversion for reducing interference of human factors on measurement data and judgment of results, adopts a high-precision magnetic induction displacement sensor with strong repeatability, calculates displacement stroke of the sensor through a program, converts the displacement stroke into gap values, has measurement accuracy of 0.01mm, has wide application range and can measure gap measurement areas of any area. Meanwhile, the method can also be applied to operators, self-checking/mutual checking links, can quickly find out problems, immediately remove faults, prevent the problem products from flowing into the next production link, control the problem from the source, avoid the occurrence of the problem, reduce the quality problems found by inspectors, treat the quality problems and the links of the follow-up operators for troubleshooting, shorten the production period, save the labor cost, inhibit the time waste, and provide preconditions for the layout planning of the follow-up production line, the optimization and the promotion of the production beats, the improvement of the one-time cross checking qualification rate of the products, and the like.
Drawings
FIG. 1 is a schematic cross-sectional view of a digital tool for gap measurement;
FIG. 2 is a front view of a digital tool for gap measurement;
FIG. 3 is an axial view of a digital tool for gap measurement;
fig. 4 is an isometric view of a calibration ring gauge of a digitizing tool for clearance measurements.
The device comprises a sensor guide rod 1, a display screen 2, a meter body 3, a recording button 4, a reset button 5, a switch button 6, a sensor connecting rod 7, a hollow connecting stud 8, a measuring main body shell 9, a spring 10, a fixed pin shaft 11, a bearing 12, a measuring needle 13, a gear 14, a rack 15, a control module 16, a sensor 17, a power supply module 18, a charging module 19, a meter body rear shell 20, a charging port 21 and a calibration ring gauge 22.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings.
A digital tool for clearance measurement comprises a structural part and an electric control part;
the structure part plays a role of supporting members and realizing basic functions of measurement, and comprises a meter body 3, a sensor connecting rod 7, a hollow connecting stud 8, a main measuring body shell 9, a spring 10, a fixed pin 11, a bearing 12, a measuring needle 13, a gear 14, a rack 15, a meter body rear shell 20 and a calibration ring gauge 22. The relation is shown in figure 1, figure 2, figure 3 and figure 4,
the meter body 3, the sensor connecting rod 7, the hollow connecting stud 8, the measuring main body shell 9 and the meter body rear shell 20 are sequentially connected, mainly play a supporting role, and complete the supporting and measuring functions of the electric control part;
the meter body 3 and the meter body rear shell 20 are manufactured by adopting PLA materials in a 3D printing way, are screwed and fixed by 4M 1.7 self-tapping screws, are internally provided with a sensor guide rod 1, a display screen 2, a recording button 4, a reset button 5, a switch button 6, a control module 16, a sensor 17, a power module 18, a charging module 19 and a charging port 21, and are reserved in positions to realize the supporting function of the components;
the meter body 3 and the measuring main body shell 9 are connected by means of a hollow connecting stud 8, the hollow connecting stud 8 is screwed into the meter body 3 and the measuring main body shell 9 respectively, a cavity with a certain size is formed in the hollow connecting stud 8, the size of the cavity is in small clearance fit with the size of the sensor connecting rod 7 so as to realize the fixing and guiding functions of the sensor connecting rod 7, a spring 10, a fixed pin shaft 11, a bearing 12, a measuring needle 13, a gear 14 and a rack 15 are used for realizing the realization of a measuring function, the gear 14 is connected with the measuring main body shell 9 by virtue of the bearing 12, so that the axis of the gear 14 is fixed, the sensor connecting rod 7 and the rack 15 are fixedly connected by virtue of the fixed pin shaft 11, so that the linear motion is realized together, the spring 10 is arranged between the rack 15 and the measuring main body shell 9, the rebound of the rack 15 is realized, the measuring needle 13 and the gear 14 are in a high-precision welding mode, the gear 14 is precisely rotated along with the rotation of the measuring needle 13, the gear 14 is meshed with the rack 15, the rotation of the gear 14 is moved along with the rotation of the gear 14, the rack 15 is synchronously moved along with the sensor connecting rod 7, the measurement value is realized, and the transmission of a measured value is realized, and a calibration gauge module 16 is used for realizing the calibration of the measuring needle 13;
the electric control part plays a role in measurement and numerical conversion and comprises a sensor guide rod 1, a display screen 2, a recording button 4, a reset button 5, a switch button 6, a control module 16, a sensor 17, a power module 18, a charging module 19 and a charging port 21, the relation of which is shown in figures 1, 2 and 3, the electric control part supports the recording button 4, the reset button 5 and the switch button 6 by means of a meter body 3, the recording button 4 and the reset button 5 adopt self-reset movable buttons, are connected to the control module 16 through cables and are arranged at reserved positions of the meter body 3 through self-contained nuts, the recording button 4 mainly plays a role in recording data, and when the recording button is pressed down after one measurement period is finished, the data can be stopped on the display screen 2, the reset button 5 mainly has a data reset function, when one measurement period is finished and the next measurement period is needed, the reset button 5 is pressed down to realize data clearing, a zero position is displayed on the display screen 2, repeated calibration work is avoided, the switch button 6 is a power switch of a measuring tool, a metal self-locking reset button is adopted and is used for the power-on and power-off functions of the whole electric control system, the pressing 1 is a quantitative measurement channel, the pressing 2 is a qualitative measurement channel, the button switch is fixed on the meter body 3 through a nut, the data clearing is realized by pressing the reset button 5 after each start, the calibration work of the calibration ring gauge 22 is realized, and the switch button 6 is pressed down to be turned off after the measurement is finished; the display screen 2 is provided with an OLED display screen module of 0.91 inch, the module is in communication connection with the control module 16 in an IIC data transmission mode, and is also arranged at a reserved opening position of the meter body 3, and is screwed and fixed by four M1.7 self-tapping screws for data recording and displaying; the sensor 17 adopts a high-precision magnetic induction displacement sensor, the measuring range is 10mm, the resolution is 0.01mm, and a sensor guide rod 1 is arranged in the sensor;
the sensor connecting rod 7 transmits the measured displacement to the built-in sensor guide rod 1 during measurement, and the sensor acquires displacement data and transmits the displacement data to the control module 16 for processing, as shown in figure 1,
measuring needle 13 length l=10.0 mm, h Vertical dimension left/right For a measured value of 10.0 Sensor left/right ，
Gap size d=d 1 +D 2 ，
By means of trigonometric function relations
The conversion of data display is realized;
the control module 16 comprises a singlechip, an analog-to-digital conversion device and a control element, wherein the singlechip adopts a minimum system board of an Atmega328 chip, is used for collecting displacement data of the sensor 17 through built-in high-order AD conversion, converts the received analog quantity of the sensor 17 into a digital signal, matches corresponding setting requirements of the record button 4 and the reset button 5, and outputs and displays the calculated actual numerical value on the display screen 2 for reading of a user after program calculation. The power module 18 adopts a direct current 3.7V lithium battery, so that the storage of electric quantity can be realized, repeated charging is avoided, the voltage is boosted to 5V output voltage through the boosting module, and the control module 16, the display screen 2 and the sensor 17 are powered; the charging module 19 adopts TP4056 module, and is fixed through two M1.7 self-tapping screws installation, and rechargeable battery is connected to one end, and the charging mouth 21 is connected to the other end, can connect the data line for the battery charging, satisfies the power consumption demand.
A measuring method of a digital tool for clearance measurement comprises the following steps:
the first step: firstly, clean and soft cotton materials which do not fall off are used for wiping the surface of a tool, whether the appearance of the tool is damaged or not is checked, the factors which do not influence the calibration characteristic are determined, a switch button 6 is pressed, whether a display screen 2 is lightened or not is read, each key is flexible and effective, whether the liquid crystal display screen 2 is clear and stable or not is ensured, the numerical value of the display screen 2 is not broken, and when the device is used, the device is taken lightly and put lightly, the collision is forbidden, and pollutants such as dust or greasy dirt cannot enter the display, so that the numerical value display is unclear, and the use precision and the service life are influenced;
and a second step of: after the tool is taken out, the power switch button 6 is pressed, a measuring unit of the measured object is selected, the tool is firstly held by the hand to perform the tool calibration work, the measuring needle 13 of the measuring tool is put into the measuring calibration ring gauge to perform the calibration work, after the probe is stable, the reset button 5 is pressed, whether the numerical value on the liquid crystal display screen 2 is reset or not is read, the tool is taken down after the reset state is ensured, and the measuring work is ready to start;
thirdly, quantitatively judging: at this time, in the second step, the power switch button 6 is pressed 1, a quantitative measuring channel is adopted, the measuring needle 13 of the measuring tool is placed in a measured piece, the measuring needle 13 moves and is transmitted to the displacement sensor 17, the displacement sensor 17 transmits signals to the information processing chip, the signals are processed according to a digital conversion relation and then displayed on the liquid crystal display screen 2, the numerical value on the observing screen is stabilized and calmed along with the continuous stabilization of the measuring needle 13, the central line of the measuring main body shell 9 is parallel to the central line of the inner side piece and cannot incline during measurement, the sensor guide rod is ensured to move along the axial direction of the measuring rod during measurement, when the measurement is a cylindrical surface, the measuring rod is ensured to move along the axial direction of the measuring rod, a plurality of points are measured simultaneously, the accuracy of the measured data is ensured, the recording button 4 is pressed, the measured numerical value is read out on the display screen 2 and recorded;
fourth, qualitative judgment: in the second step, the power switch button 6 is pressed down by 2, a qualitative measuring channel is adopted, a measuring needle 13 of a measuring tool is placed in a measured piece, the measuring needle 13 moves and is transmitted to a displacement sensor 17, the displacement sensor 17 transmits signals to an information processing chip, the signals are processed according to a digital conversion relation and then displayed on a display screen 2, the numerical value on the observation screen is stabilized and calmed along with the continuous stabilization of the measuring needle 13, the central line of a measuring main body shell 9 is parallel to the central line of an inner side piece and cannot incline during measurement, a sensor guide rod is ensured to move along the axial direction of a measuring rod during measurement, the measuring rod is ensured to move along the axial direction of the measuring rod during measurement, a plurality of points are measured simultaneously, the accuracy of measured data is ensured, a recording button 4 is pressed down, and whether the measured data are qualified or not is read out on the liquid crystal display screen 2, and the measured data are recorded;
fifth, at the end of the measurement, the rapid withdrawal of the measuring needle 13 is avoided, in case the inertia of the rapid rebound of the measuring needle 13 is too great, causing the pointer to bend.
And sixthly, taking down the tool, cleaning the tool, resetting the tool after the display is closed, and placing the tool in the tool box. The knocking, bumping and knocking tool is forbidden to prevent the parts from being damaged or the measuring needle 13 from bending.
By analyzing the existing measuring method and measuring tool, when universal tools such as a feeler gauge, a vernier caliper, a steel plate gauge and the like are used for measuring, the operation is difficult, the precision is low, the surface of a part is easily scratched in the measuring process, the influence of factors of artificial subjective judgment and the operating method is large, and the measuring result has large phase difference caused by error accumulation (reading error and operating error) because the measuring space is not opened in some parts, so that the control capability and the measuring efficiency and precision of products are directly influenced.
In the production process of the aircraft gap quality inspection method, the special intelligent electronic tool is used, so that the gap measurement efficiency and measurement accuracy are effectively improved, errors caused by the measurement method are reduced, the measurement mode is improved, the time wasted by repeated measurement is reduced, economic losses caused by reworking and repairing and product out-of-tolerance are reduced, the accuracy of appearance detection quality control is remarkably improved, and a positive effect is played on ensuring the appearance quality of aviation products.
Claims (6)
1. A digitizing tool for clearance measurement, comprising a structural portion and an electrical control portion;
the structure part comprises a meter body (3), a sensor connecting rod (7), a hollow connecting stud (8), a measuring main body shell (9), a spring (10), a fixed pin shaft (11), a bearing (12), a measuring needle (13), a gear (14), a rack (15), a meter body rear shell (20) and a calibration ring gauge (22);
the meter body (3), the sensor connecting rod (7), the hollow connecting stud (8), the measuring main body shell (9) and the meter body rear shell (20) are sequentially connected, the meter body (3) and the meter body rear shell (20) are manufactured by adopting PLA materials in a 3D printing mode, are screwed and fixed by using 4M 1.7 self-tapping screws, and are internally provided with a sensor guide rod (1), a display screen (2), a recording button (4), a reset button (5), a switch button (6), a control module (16), a sensor (17), a power module (18), a charging module (19) and a charging port (21) at reserved positions, and realize the supporting function of the components;
the meter body (3) and the measuring main body shell (9) are connected by means of hollow connecting studs (8), the hollow connecting studs (8) are respectively screwed into the meter body (3) and the measuring main body shell (9) and form a cavity with a certain size in the meter body and the measuring main body shell, the size of the cavity is in small clearance fit with the size of the sensor connecting rod (7) so as to realize the fixing and guiding functions of the sensor connecting rod (7), a spring (10), a fixed pin shaft (11), a bearing (12), a measuring needle (13), a gear (14) and a rack (15) are used for realizing the measuring function, the gear (14) is connected with the measuring main body shell (9) by means of the bearing (12), so that the axis of the gear (14) is fixed, the sensor connecting rod (7) and the rack (15) are fixedly connected by the fixed pin shaft (11), the spring (10) is arranged between the rack (15) and the measuring main body shell (9) to realize the rebound of the sensor connecting rod (15), the measuring needle (13) and the gear (14) are in a high-precision welding mode, the gear (14) is meshed with the rack (15) along with the rotation of the measuring needle (13) and the rack (14) along with the rotation of the measuring needle (15), the movement of the rack (15) drives the sensor connecting rod (7) to synchronously move, so that the transmission of measurement values is realized, the measurement values are processed by the control module (16), and the calibration ring gauge (22) is used for realizing the calibration of the measurement needle (13);
the electronic control part comprises a sensor guide rod (1), a display screen (2), a recording button (4), a reset button (5), a switch button (6), a control module (16), a sensor (17), a power module (18), a charging module (19) and a charging port (21), wherein the electronic control part is supported by a meter body (3), the recording button (4), the reset button (5) and the switch button (6), the recording button (4) and the reset button (5) adopt self-reset movable buttons, are connected to the control module (16) through cables and are arranged at a reserved position of the meter body (3) through self-contained nuts, the sensor (17) adopts a high-precision magnetic induction displacement sensor, the measuring range is 10mm, the resolution is 0.01mm, and the sensor guide rod (1) is arranged in the meter body;
during measurement, the sensor connecting rod (7) transmits the measured displacement to the built-in sensor guide rod (1), at the moment, the sensor acquires displacement data and transmits the displacement data to the control module (16) for processing, and the control module (16) comprises a singlechip, an analog-to-digital conversion device and a control element.
2. The digital tool for gap measurement according to claim 1, wherein the singlechip adopts a minimum system board of an Atmega328 chip, is used for collecting displacement data of a sensor (17) through built-in high-level AD conversion, converting the received analog quantity of the sensor (17) into a digital signal, and is matched with corresponding setting requirements of a record button (4) and a reset button (5), and the calculated actual numerical value is output and displayed on a display screen (2) for reading of a user after program calculation; the power supply module (18) adopts a direct current 3.7V lithium battery, so that the storage of electric quantity can be realized, repeated charging is avoided, the voltage is boosted to 5V output voltage through the boosting module, and the control module (16), the display screen (2) and the sensor (17) are powered; the charging module (19) adopts a TP4056 module, one end of the charging module is connected with a rechargeable battery, the other end of the charging module is connected with the charging port (21), and the charging module can be connected with a data line to charge the battery, so that the power consumption requirement is met.
3. A digitizing tool for gap measurement according to claim 1 or 2, characterized in that the display (2) employs a 0.91 inch OLED display module which is communicatively connected to the control module (16) by IIC data transmission, also mounted in the reserved opening of the watch body (3).
4. The digital tool for gap measurement according to claim 1 or 2, characterized in that the recording button (4) mainly has a data recording function, when one measurement period is finished, the recording button is pressed to stop data on the display screen (2), so that the data recording and reading are facilitated, the reset button (5) mainly has a data resetting function, when the next measurement period is required to be finished after the measurement period is finished, the reset button (5) is pressed to realize data clearing, the zero position is displayed on the display screen (2), the repeated calibration work is avoided, the switch button (6) is a power switch of the measurement tool, a metal self-locking reset button is adopted for the power-on and power-off functions of the whole electric control system, the pressing of the switch button (6) is a quantitative measurement channel, the pressing of the switch button is a qualitative measurement channel, the switch is fixed on the meter body (3) through a button switch with a nut, the calibration work of the measurement needle (13) is required after each time, and the calibration work of the calibration ring gauge (22) is required to be turned off after the measurement is finished.
5. A digitizing tool for gap measurement as claimed in claim 3, characterized in that the recording button (4) mainly has a data recording function, when a measurement period is finished, the recording button is pressed down to stop data on the display screen (2), so that the data recording and reading are facilitated, the reset button (5) mainly has a data resetting function, when a measurement period is finished, the reset button (5) is pressed down to realize data clearing when the next measurement period is required, zero position is displayed on the display screen (2), repeated calibration work is avoided, the switch button (6) is a power switch of the measuring tool, a metal self-locking reset button is adopted for the power-on and power-off functions of the whole electronic control system, the pressing down of the switch button (1) is a quantitative measurement channel, the pressing down of the switch button is a qualitative measurement channel, the reset button is fixed on the meter body (3) through a button switch with a nut, after each power-on, the calibration work of the measuring needle (13) is required, and the calibration ring gauge (22) is pressed down after the measurement is finished.
6. A method for measuring a digitized tool for gap measurement according to any one of claims 1 to 5, characterized by the steps of:
the first step: firstly, wiping the surface of a tool with clean and soft cotton which does not fall off, checking whether the appearance of the tool is damaged, determining that no factor affecting the calibration characteristic exists, pressing a switch button (6), reading whether a display screen (2) is lightened, ensuring that each key is flexible and effective, and ensuring whether the liquid crystal display screen (2) is clear and stable and the numerical value of the display screen (2) is not broken;
and a second step of: after the tool is taken out, a power switch button (6) is pressed, a measuring unit of a measured object is selected, the tool is firstly held by a hand to perform the calibration work of the tool, a measuring needle (13) of the measuring tool is put into a measuring calibration ring gauge to perform the calibration work, after the probe is stable, a reset button (5) is pressed, whether the numerical value on a liquid crystal display screen (2) returns to zero or not is read, the tool is taken down after the return to zero state is ensured, and the measurement work is ready to start;
thirdly, quantitatively judging: at this time, in the second step, the power switch button (6) is pressed down by 1, a quantitative measuring channel is adopted, a measuring needle (13) of a measuring tool is placed in a measured piece, the measuring needle (13) moves and is transmitted to a displacement sensor (17), the displacement sensor (17) transmits signals to an information processing chip, the signals are processed according to a digital conversion relation and then displayed on a liquid crystal display screen (2), the numerical value on the observation screen is stabilized and calmed along with the continuous stabilization of the measuring needle (13), the central line of a measuring main body shell (9) is parallel to the central line of an inner side piece and cannot incline during measurement, a sensor guide rod is ensured to move along the axial direction of the measuring rod during measurement, the axial direction of the measuring rod is ensured to move along with a plurality of points during measurement, the accuracy of measured data is ensured, a recording button (4) is pressed down, and the measured numerical value is read out on the display screen (2) and recorded;
fourth, qualitative judgment: at the moment, in the second step, a power switch button (6) is pressed down by 2, a qualitative measuring channel is adopted, a measuring needle (13) of a measuring tool is placed in a measured piece, the measuring needle (13) moves and is transmitted to a displacement sensor (17), the displacement sensor (17) transmits signals to an information processing chip, the signals are processed according to a digital conversion relation and then displayed on a display screen (2), the numerical value on the observation screen is stabilized and calmed along with the continuous stabilization of the measuring needle (13), the central line of a measuring main body shell (9) is parallel to the central line of an inner side piece and cannot incline during measurement, a sensor guide rod is ensured to move along the axial direction of the measuring rod during measurement, the axial direction of the measuring rod is ensured to move along the axial direction of the measuring rod when the measuring is a cylindrical surface, a plurality of points are measured simultaneously, the accuracy of measured data is ensured, a recording button (4) is pressed down, and whether the coincidence judgment of the measuring data is qualified or not is read out on the display screen (2) and is recorded;
fifthly, when the measurement is finished, the measurement needle (13) is prevented from being quickly withdrawn, so that the pointer is prevented from being bent due to the fact that the inertia of the quick rebound of the measurement needle (13) is too large;
and sixthly, taking down the tool, cleaning the tool, resetting the tool after the display is closed, and placing the tool in the tool box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310943955.XA CN116952118A (en) | 2023-07-28 | 2023-07-28 | Digital tool for gap measurement and measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310943955.XA CN116952118A (en) | 2023-07-28 | 2023-07-28 | Digital tool for gap measurement and measurement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116952118A true CN116952118A (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310943955.XA Pending CN116952118A (en) | 2023-07-28 | 2023-07-28 | Digital tool for gap measurement and measurement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116952118A (en) |
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2023
- 2023-07-28 CN CN202310943955.XA patent/CN116952118A/en active Pending
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