CN114543610B - Measuring rod verification device and measuring rod verification method for micrometer calibration - Google Patents
Measuring rod verification device and measuring rod verification method for micrometer calibration Download PDFInfo
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- CN114543610B CN114543610B CN202111673504.6A CN202111673504A CN114543610B CN 114543610 B CN114543610 B CN 114543610B CN 202111673504 A CN202111673504 A CN 202111673504A CN 114543610 B CN114543610 B CN 114543610B
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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
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/18—Micrometers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention relates to a measuring rod calibrating device for micrometer calibration and a measuring rod calibrating method; solves the problems of complex operation of an optical gauge or a length measuring machine in the prior art; and there is no problem with respect to the measured rod clamp; the verification device comprises a clamping assembly and a measuring assembly; the clamping assembly comprises a base, a first mounting seat, a second mounting seat, an arc-shaped pressing plate, a horizontal adjusting assembly and a vertical adjusting assembly; the device comprises a first mounting seat, a second mounting seat, a horizontal adjusting component, a vertical adjusting component, a measuring component and a control component, wherein the first mounting seat and the second mounting seat are respectively provided with mounting holes, the top ends of the first mounting seat and the second mounting seat are respectively provided with a V-shaped groove, the upper end of each V-shaped groove is provided with an arc-shaped pressing plate, the horizontal adjusting component is connected with the first mounting seat, the vertical adjusting component is connected with the second mounting seat, and the measuring component comprises a sensor bracket, an adjusting component, and a first sensor and a second sensor which are sequentially arranged on the sensor bracket from top to bottom; the sensor bracket is connected with the adjusting component; the invention also provides a verification method of the measured rod.
Description
Technical Field
The invention relates to a precision measurement device, in particular to a measuring rod verification device for micrometer calibration and a measuring rod verification method.
Background
Because the micrometer is a metering device which is frequently used by each production unit, the use amount is large and frequent, the accuracy control of the measurement value directly influences the quality of the processed product, and the accuracy of the micrometer to the indication value of the use amount rod is directly related to the accuracy of the indication value of the micrometer. According to JJG 21-2008 micrometer verification procedure, when micrometer with a measuring range more than 25mm is detected, the calibrating and measuring rod is required to be verified.
The micrometer calibration procedure specifies that the micrometer is used for calibrating the size and the fluctuation of a measuring rod, the micrometer is required to be calibrated by a comparison method on an optical gauge or a length measuring machine, and other instruments with the same accuracy can be used for calibration; in actual metering verification work, as the optical gauge or the length measuring machine is not special equipment for verifying the micrometer calibration measuring rod, the operation technology is mastered to be trained and repeatedly practiced; and because no proper clamping device is provided, repeated adjustment and clamping are required each time, and the work efficiency is affected due to delay time.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, in the actual metering verification work, as an optical gauge or a length measuring machine is not special equipment for verifying a micrometer calibration measuring rod, the operation technology is required to be trained and repeatedly practiced; and because no proper clamping fixture is adopted, repeated adjustment and clamping are needed each time, and the problem that the working efficiency is affected due to delay is solved, the measuring rod calibrating device for micrometer calibration and the measuring rod calibrating method are provided.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the micrometer calibrating and measuring rod calibrating device is characterized in that: the device comprises a standard block, a base, a clamping assembly and a measuring assembly, wherein the clamping assembly and the measuring assembly are sequentially arranged on the base;
the clamping assembly comprises a reference baffle, a first mounting seat, a second mounting seat, an arc-shaped pressing plate, a horizontal adjusting assembly and a vertical adjusting assembly which are sequentially arranged on the base;
the first mounting seat and the second mounting seat are provided with mounting holes with horizontal axes, and one end of the standard block sequentially passes through the mounting holes of the second mounting seat and the mounting holes of the first mounting seat and then abuts against the reference baffle;
the top ends of the first mounting seat and the second mounting seat are respectively provided with a V-shaped groove, the arc-shaped pressing plate is arranged at the upper end of the V-shaped groove and used for fixing the measured rod in the V-shaped groove, and one end of the measured rod is abutted against the reference baffle;
the horizontal adjusting component is connected with the first mounting seat and is used for adjusting the standard block and the measured rod in the horizontal direction; the vertical adjusting component is connected with the second mounting seat and is used for adjusting the standard block and the measured rod in the vertical direction;
the measuring assembly is arranged on one side of the second mounting seat along the axis direction of the standard block and used for measuring a measured rod, and comprises a sensor bracket, a shifting fork, a measuring and adjusting assembly, and a first sensor and a second sensor which are sequentially arranged on the sensor bracket from top to bottom;
the sensor bracket is connected with the measurement adjusting component;
the measuring and adjusting assembly is used for horizontally and vertically moving the sensor bracket;
the shifting fork is connected with the sensor bracket and used for compressing the measuring head of the first sensor and the measuring head of the second sensor.
Further, the horizontal adjusting assembly comprises a first guide rail, a first baffle, a spring baffle, a first screw and a first spring arranged on the spring baffle;
the first guide rail is connected with the base;
the first mounting seat is connected with the first guide rail;
the first baffle plate and the spring baffle plate are respectively arranged at two sides of the first guide rail;
one end of the first spring is connected with the spring baffle plate, and the other end of the first spring is contacted with the first mounting seat;
one end of the first screw penetrates through the first baffle plate and then contacts with the first mounting seat, the first screw is used for driving the first mounting seat to slide on the first guide rail, and the sliding direction is perpendicular to the axis of the measured rod.
Further, the vertical adjustment assembly includes a second guide rail and a sixth screw;
the second guide rail is connected with the base, the second mounting seat is connected with the second guide rail, and the sixth screw penetrates through the second mounting seat along the vertical direction and then contacts with the top surface of the second guide rail, so that the second mounting seat can move vertically, and the moving direction is perpendicular to the axis of the measured rod.
Further, the measurement adjusting assembly comprises a stand column, a guide rail, a second spring, a mounting seat, a seventh screw and a ninth screw;
the guide rail is arranged in the mounting seat, the sensor bracket slides on the guide rail, and the sliding direction of the sensor bracket is perpendicular to the axis of the measured rod;
the seventh screw penetrates through the side wall of one end of the mounting seat from outside to inside along the sliding direction of the sensor bracket and then contacts with one end of the sensor bracket;
the second spring is arranged between the other end of the sensor bracket and the side wall of the other end of the mounting seat;
one end of the mounting seat is provided with a vertical through hole, the upright post penetrates through the through hole and then is connected with the base, the mounting seat is provided with a notch, and two ends of the notch are respectively provided with a first fastening end and a second fastening end;
the first fastening end and the second fastening end are connected through the ninth screw and clamp the upright post, and the first fastening end and the second fastening end are used for fixing the mounting seat at different heights in the vertical direction of the upright post.
Further, the shifting fork is Y-shaped, two front ends of the shifting fork are provided with circular rings, and the two circular rings are respectively sleeved at the front ends of the measuring heads of the first sensor and the second sensor and are used for compressing the measuring heads of the first sensor and the second sensor;
the rear end of the shifting fork is connected with the sensor bracket through a fixing screw;
the rear end of the shifting fork is provided with a strip hole, and the shifting fork is fixed on the sensor bracket after the fixing screw penetrates through the strip hole.
The invention also provides a micrometer calibrating and measuring rod verification method, which is characterized in that: the assay device according to claim 1, comprising the steps of:
step 1: mounting the measured rod on the calibrating device;
step 2: the standard block and one end of the measured rod are abutted against the reference baffle;
step 3: the measuring head of the first sensor and the measuring head of the second sensor can be extended and compressed;
step 4: resetting the values measured by the first sensor and the second sensor, and recording the position as an initial measurement position;
step 5: compressing the measuring heads of the first sensor and the second sensor, enabling the measuring heads of the first sensor and the second sensor to leave the standard block, moving the first sensor and the second sensor upwards, enabling the first sensor to be aligned with the center position of the end face of the measured rod, enabling the second sensor to be aligned with the standard block, loosening the measuring heads of the first sensor and the second sensor, enabling the measuring heads of the first sensor to be in contact with the measured rod, and enabling the measuring heads of the second sensor to be in contact with the standard block;
step 6: observing whether the value of the second sensor is zero, if so, the measured data are valid, recording the measured data delta L1 of the first sensor, and because the length dimension of the standard block is L0, the dimension of the measured rod is L1=L0+delta L1;
wherein: l0 is the length of the standard block, and DeltaL 1 is the distance difference between the current position and the initial measurement position;
step 7: moving the first sensor around the center of the measured rod to enable the first sensor to obtain data of the measured rod at a plurality of different positions, wherein when the value of the second sensor is zero during measurement, the measured data are valid, and the size of the measured rod is calculated;
step 8: the fluctuation amount of the measured rod is calculated.
Further, in step 8, the manner of calculating the fluctuation amount of the measured rod is: and calculating the difference between the maximum value and the minimum value of the measured rod at different positions, and recording the difference as the fluctuation of the measured rod.
Further, in step 7, the moving mode around the center of the measured rod is specifically: the measurement is taken at the end points of any two mutually perpendicular line segments of the over-centre are selected and the four end points are on the same circumference.
The beneficial effects of the invention are as follows:
1. according to the micrometer calibrating and measuring rod calibrating device, through the arrangement of the clamping assembly and the measuring assembly, not only is the clamping of the measured rod realized, but also the measured rod can be calibrated through the measuring assembly, the device is convenient to install and simple in operation method, has low professional requirements on operators, and can improve the working efficiency.
2. According to the micrometer calibrating rod calibrating device, through the horizontal adjusting component and the vertical adjusting component, the standard block and the measured rod can be quickly leveled, and the measuring accuracy of the measuring component is guaranteed.
3. According to the micrometer calibrating device for the measuring rod, the accurate calibration of the measured rod can be rapidly achieved through the first sensor and the second sensor.
4. The verification method for the micrometer calibration measuring rod is simple in measurement method and easy to operate.
5. According to the verification method for the micrometer calibration measuring rod, the difference between the maximum value and the minimum value of the measured results is selected through measuring different positions of the measured rod, so that the accurate verification of the dimensional fluctuation of the measured rod can be realized.
Drawings
FIG. 1 is a schematic view of an embodiment of a micrometer calibration gauge bar calibration device according to the present invention;
FIG. 2 is a partial schematic view of the right end of FIG. 1;
FIG. 3 is a schematic view of the structure of the measuring assembly in the device of the present invention;
FIG. 4 is an isometric view of a measurement assembly in the apparatus of the present invention;
FIG. 5 is a cross-sectional view of A-A of FIG. 1;
FIG. 6 is a cross-sectional view of B-B of FIG. 1;
FIG. 7 is a partial view of the cross-sectional view of D-D of FIG. 5;
FIG. 8 is a partial view of the cross-sectional view of C-C in FIG. 6;
FIG. 9 is a cross-sectional view of E-E of FIG. 1;
FIG. 10 is a partial view of the cross-sectional view of F-F in FIG. 9;
in the figure, 1, a base; 2. a first mount; 3. a second mounting base; 4. a first guide rail; 5. a first screw; 6. a first baffle; 7. a second screw; 8. a third screw; 9. an arc-shaped pressing plate; 10. a fourth screw; 11. a first spring; 12. a spring baffle; 13. a fifth screw; 14. a sixth screw; 15. a second guide rail; 16. guide rail balls; 17. a rod to be measured; 18. a standard block; 191. a first sensor; 192. a second sensor; 20. a shifting fork; 21. a guide rail; 22. a seventh screw; 23. a sensor holder; 24. a column; 25. a second spring; 26. a mounting base; 27. an eighth screw; 28. a ninth screw; 29. a tenth screw; 30. a reference baffle; 31. a first fastening end; 32. and a second fastening end.
Detailed Description
The invention relates to a micrometer calibrating and measuring rod calibrating device, which is shown in fig. 1 and 2, and comprises a clamping assembly and a measuring assembly;
the specific functions of the components are as follows:
clamping assembly: the clamping and fixing device is used for realizing clamping and fixing of the standard block 18 and the measured rod 17, and realizing verification of the measured rod 17 in cooperation with a measuring assembly.
And a measuring assembly: for measuring the dimension of the rod 17 to be measured.
The specific composition and connection mode of each component are as follows:
as shown in fig. 5 and 6, the clamping assembly comprises a base 1, a first mounting seat 2, a second mounting seat 3, an arc-shaped pressing plate 9, a reference baffle 30, a third screw 8, a fourth screw 10, and a horizontal adjusting assembly and a vertical adjusting assembly which are mounted on the base 1;
the horizontal adjusting assembly comprises a first guide rail 4, a first baffle 6, a spring baffle 12, a first screw 5 and a first spring 11 arranged on the spring baffle 12;
the vertical adjustment assembly comprises a second guide rail 15 and a sixth screw 14;
as shown in fig. 3 and 4, the measuring assembly includes a sensor bracket 23, a fork 20, a measuring adjusting assembly, and a first sensor 191 and a second sensor 192 sequentially installed on the sensor bracket 23 from top to bottom;
the measuring and adjusting assembly comprises a stand column 24, a guide rail 21, a second spring 25, a mounting seat 26 and a seventh screw 22;
the leftmost end of the base 1 is connected with a reference baffle 30, the left end of the base 1 is connected with a first guide rail 4 through a fifth screw 13, two ends of the first guide rail 4 are respectively connected with a first baffle 6 and a spring baffle 12, the first guide rail 4 is connected with a first installation seat 2 in a sliding manner, a first screw 5 horizontally penetrates through the first baffle 6 and is in threaded connection with the first baffle 6, the first screw 5 is in contact with one end of the first installation seat 2, a first spring 11 is arranged between the other end of the first installation seat 2 and the spring baffle 12, and reciprocating movement of the first installation seat 2 is realized under the action of the first spring 11 by rotating the first screw 5, and a guide rail ball 16 is arranged between the first installation seat 2 and the first guide rail 4 as shown in fig. 7;
the second guide rail 15 is connected with the right end of the base 1 through a fifth screw 13, the second mounting seat 3 is slidably connected with the second guide rail 15, a sixth screw 14 penetrates through the second mounting seat 3 along the vertical direction and is connected with the second guide rail 15, the sixth screw 14 is rotated to drive the second mounting seat 3 to move along the vertical direction, and as shown in fig. 8, a guide rail ball 16 is arranged between the second mounting seat 3 and the second guide rail 15.
The first mounting seat 2 and the second mounting seat 3 are provided with mounting holes with horizontal axes, and are used for mounting the standard block 18, one end of the standard block 18 sequentially penetrates through the two mounting holes, after the standard block 18 is placed in the mounting holes, the fourth screw 10 is inserted into the first mounting seat 2 and the second mounting seat 3 from outside to inside, and the fourth screw 10 is used for fixing the standard block 18 in the mounting holes; v-shaped grooves are formed in the top ends of the first mounting seat 2 and the second mounting seat 3, an arc-shaped pressing plate 9 is arranged at the upper end of each V-shaped groove, and the arc-shaped pressing plate 9 is connected with the second mounting seat 2 or the second mounting seat 3 through a second screw 7; the third screw 8 passes through the arc-shaped pressing plate 9 from top to bottom and then contacts with the measured rod 17.
The measured rod 17 is fixed in the V-shaped groove through the lower end of the third screw 8.
As shown in fig. 9 and 10, the upright 24 is connected to the rightmost end of the base 1, a round hole is formed at one end of the mounting seat 26, the upright 24 is inserted into the round hole, a notch is formed at the mounting seat 26, a first fastening end 31 and a second fastening end 32 are respectively arranged at two ends of the notch, the first fastening end 31 and the second fastening end 32 are connected through a ninth screw 28, the first fastening end 31 and the second fastening end 32 can be fastened or loosened through the ninth screw 28, the mounting seat 26 can be fixed on the upright 24 or can slide on the upright 24, a U-shaped groove is formed in the mounting seat 26, the guide rail 21 is mounted in the U-shaped groove through an eighth screw 27, the sensor support 23 slides on the guide rail 21, the sliding direction is perpendicular to the axis of the measured rod 17, a guide rail ball 16 is arranged between the guide rail 21 and the sensor support 23, one end of the guide rail 21 along the horizontal sliding direction of the sensor support 23 is provided with a connecting hole, one end of the seventh screw 22 passes through the connecting hole and then contacts with one end of the sensor support 23, the other end of the sensor support 23, a second spring 25 is mounted on the other side of the sensor support 23, the sensor support 22 can be mounted on the other side of the sensor support 26, the sensor support 23 can be sequentially moved towards the sensor support 23 from the first support 23 to the second support 23 through the seventh screw 25, and the sensor support 23 is mounted on the sensor support 23 by the sensor support 23, and the sensor support is mounted on the sensor support 23 by the sensor support 23.
The shifting fork 20 is Y-shaped, two front ends of the shifting fork 20 are provided with circular rings, and the two circular rings are respectively sleeved at the front ends of the measuring heads of the first sensor 191 and the second sensor 192 and are used for compressing the measuring heads of the first sensor 191 and the second sensor 192;
the rear end of the shifting fork 20 is connected with a sensor bracket 23 through a fixing screw;
the rear end of the shifting fork 20 is provided with a strip hole, and a fixing screw passes through the strip hole to fix the shifting fork 20 on the sensor bracket 23.
The method of calibrating the measured rod 17 using the calibration apparatus of claim 1, comprising the steps of:
step 1: the rod 17 to be measured is mounted on the assay device,
step 2: the standard block 18 and one end of the measured rod 17 are abutted against the reference baffle 30;
specifically, the left end surfaces of the standard block 18 and the measured rod 17 are completely attached to the reference baffle 30 by adjusting the first screw 5 and the sixth screw 14;
step 3: the first sensor 191 and the second sensor 192 are contacted with the end face of the standard block 18, and the measuring heads of the first sensor 191 and the second sensor 192 are compressed, so that the measuring heads of the first sensor 191 and the second sensor 192 can be extended and compressed;
step 4: subsequently, the values measured by the first sensor 191 and the second sensor 192 are cleared, and the position is recorded as an initial measurement position;
step 5: compressing the heads of the first and second sensors 191 and 192 such that the heads of the first and second sensors 191 and 192 are separated from the standard block 18, and moving up the first and second sensors 191 and 192 such that the first sensor 191 is aligned at the center position of the measured rod 17 and the second sensor 192 is aligned with the standard block 18, releasing the heads of the first and second sensors 191 and 192 such that the heads of the first and second sensors 191 are in contact with the measured rod 17 and the heads of the second sensor 192 are in contact with the standard block 18;
specifically, the probe of the first sensor 191 and the second sensor 192 is compressed using the fork 20;
step 6: observing whether the value of the second sensor 192 is zero, if so, the measured data is valid, and recording the measured data Δl1 of the first sensor 191, and since the length dimension of the standard block 18 is L0, the length dimension l1=l0+Δl1 of the measured rod 17;
wherein: l0 is the length of the standard block 18, and ΔL1 is the distance difference between the current position and the initial measurement position;
step 7: moving the first sensor 191 around the center of the measured rod 17 so that the first sensor 191 obtains data of the measured rod 17 at a plurality of different positions, and when the value of the second sensor 192 is zero during measurement, the measured data is valid and the size of the measured rod 17 is calculated;
specific: moving around the center of the measured rod 17, selecting the end points of any two mutually perpendicular lines to measure, and obtaining the dimension data of five groups of measured rods 17, namely L1, L2, L3, L4 and L5, on the same circumference;
step 8: calculating the fluctuation amount of the measured rod 17;
the specific calculation mode is as follows: the difference between the maximum value and the minimum value of the dimension of the measured rod 17 calculated at different positions of the measured rod 17 is recorded as the fluctuation amount of the measured rod 17.
Claims (8)
1. Micrometer calibration quantity pole calibrating installation, its characterized in that: the device comprises a standard block (18), a base (1), and a clamping assembly and a measuring assembly which are sequentially arranged on the base (1);
the clamping assembly comprises a reference baffle (30), a first mounting seat (2), a second mounting seat (3), an arc-shaped pressing plate (9), and a horizontal adjusting assembly and a vertical adjusting assembly which are arranged on the base (1) in sequence;
the first mounting seat (2) and the second mounting seat (3) are provided with mounting holes with horizontal axes, and one end of the standard block (18) sequentially passes through the mounting holes of the second mounting seat (3) and the mounting holes of the first mounting seat (2) and then abuts against the reference baffle (30);
v-shaped grooves are formed in the top ends of the first mounting seat (2) and the second mounting seat (3), the arc-shaped pressing plate (9) is arranged at the upper end of the V-shaped groove, the measured rod (17) is fixed in the V-shaped groove through a screw, and one end of the measured rod (17) is abutted against the reference baffle (30);
the horizontal adjusting component is connected with the first mounting seat (2) and is used for adjusting the standard block (18) and the measured rod (17) in the horizontal direction; the vertical adjusting component is connected with the second mounting seat (3) and is used for adjusting the standard block (18) and the measured rod (17) in the vertical direction;
the measuring assembly is arranged on one side of the second mounting seat (3) along the axis direction of the standard block (18) and is used for measuring a measured rod (17), and comprises a sensor bracket (23), a shifting fork (20), a measuring and adjusting assembly, and a first sensor (191) and a second sensor (192) which are sequentially arranged on the sensor bracket (23) from top to bottom;
the sensor bracket (23) is connected with the measurement adjusting component;
the measuring and adjusting assembly is used for horizontally and vertically moving the sensor bracket (23);
the shifting fork (20) is connected with the sensor bracket (23) and used for compressing the measuring head of the first sensor (191) and the measuring head of the second sensor (192).
2. A micrometer calibration dosage rod verification device as defined in claim 1, wherein:
the horizontal adjusting assembly comprises a first guide rail (4), a first baffle (6), a spring baffle (12), a first screw (5) and a first spring (11) arranged on the spring baffle (12);
the first guide rail (4) is connected with the base (1);
the first mounting seat (2) is connected with the first guide rail (4);
the first baffle (6) and the spring baffle (12) are respectively arranged at two sides of the first guide rail (4);
one end of the first spring (11) is connected with the spring baffle plate (12), and the other end of the first spring is contacted with the first mounting seat (2);
one end of the first screw (5) passes through the first baffle (6) and then contacts with the first mounting seat (2) to drive the first mounting seat (2) to slide on the first guide rail (4), and the sliding direction is perpendicular to the axis of the measured rod (17).
3. A micrometer calibration dosage rod verification device as claimed in claim 2 wherein:
the vertical adjustment assembly comprises a second guide rail (15) and a sixth screw (14);
the second guide rail (15) is connected with the base (1), the second mounting seat (3) is connected with the second guide rail (15), and the sixth screw (14) passes through the second mounting seat (3) along the vertical direction and then contacts with the top surface of the second guide rail (15) for realizing the vertical movement of the second mounting seat (3), and the movement direction is vertical to the axis of the measured rod (17).
4. A micrometer calibration rod assay according to claim 1, 2 or 3, wherein:
the measuring and adjusting assembly comprises a stand column (24), a guide rail (21), a second spring (25), a mounting seat (26), a seventh screw (22) and a ninth screw (28);
the guide rail (21) is arranged in the mounting seat (26), the sensor bracket (23) slides on the guide rail (21) and the sliding direction is perpendicular to the axis of the measured rod (17);
the seventh screw (22) passes through the side wall of one end of the mounting seat (26) from outside to inside along the sliding direction of the sensor bracket (23) and then contacts with one end of the sensor bracket (23);
the second spring (25) is arranged between the other end of the sensor bracket (23) and the side wall of the other end of the mounting seat (26);
one end of the mounting seat (26) is provided with a vertical through hole, the upright post (24) penetrates through the through hole and then is connected with the base (1), the mounting seat (26) is provided with a notch, and two ends of the notch are respectively provided with a first fastening end (31) and a second fastening end (32);
the first fastening end (31) and the second fastening end (32) are connected through the ninth screw (28) and clamp the upright (24) for fixing the mounting seat (26) at different heights in the vertical direction of the upright (24).
5. The micrometer calibration gauge rod verification device of claim 4, wherein:
the shifting fork (20) is Y-shaped, two front ends of the shifting fork (20) are respectively provided with a circular ring, and the two circular rings are respectively sleeved at the front ends of the measuring heads of the first sensor (191) and the second sensor (192) and are used for compressing the measuring heads of the first sensor (191) and the second sensor (192);
a strip hole is formed in the rear end of the shifting fork (20), and the shifting fork (20) is fixed on the sensor bracket (23) after a fixing screw penetrates through the strip hole.
6. A micrometer calibrating and measuring rod verification method is characterized in that: the assay device according to claim 1, comprising the steps of:
step 1: mounting a measured rod (17) on the verification device;
step 2: one end of the standard block (18) and one end of the measured rod (17) are abutted against the reference baffle (30);
step 3: the first sensor (191) and the second sensor (192) are contacted with the end face of the standard block (18), and the measuring heads of the first sensor (191) and the second sensor (192) are compressed, so that the measuring heads of the first sensor (191) and the second sensor (192) can be extended and compressed;
step 4: zero clearing the values measured by the first sensor (191) and the second sensor (192), and recording the position as an initial measurement position;
step 5: compressing the measuring heads of the first sensor (191) and the second sensor (192) so that the measuring heads of the first sensor (191) and the second sensor (192) are separated from the standard block (18), moving up the first sensor (191) and the second sensor (192) so that the first sensor (191) is aligned with the center position of the end face of the measured rod (17), the second sensor (192) is aligned with the standard block (18), and loosening the measuring heads of the first sensor (191) and the second sensor (192) so that the measuring heads of the first sensor (191) are in contact with the measured rod (17), and the measuring heads of the second sensor (192) are in contact with the standard block (18);
step 6: observing whether the value of the second sensor (192) is zero, if so, the measured data is valid, recording the measured data delta L1 of the first sensor (191), and because the length dimension of the standard block (18) is L0, the dimension L1=L0+delta L1 of the measured rod (17);
wherein: l0 is the length of the standard block (18), and DeltaL 1 is the distance difference between the current position and the initial measurement position;
step 7: moving the first sensor (191) around the center of the measured rod (17) so that the first sensor (191) obtains data of the measured rod (17) at a plurality of different positions, and when the value of the second sensor (192) is zero during measurement, the measurement data are valid, and calculating the size of the measured rod (17);
step 8: the fluctuation amount of the measured rod (17) is calculated.
7. The micrometer calibration metering rod verification method according to claim 6, wherein:
in step 8, the manner of calculating the fluctuation amount of the measured rod (17) is as follows: the difference between the maximum value and the minimum value obtained by calculating the measured rod (17) at different positions is recorded as the fluctuation of the measured rod (17).
8. A micrometer calibration metering rod assay according to claim 6 or 7, wherein:
in the step 7, the center movement mode around the measured rod (17) is specifically as follows: the measurement is taken at the end points of any two mutually perpendicular line segments of the over-centre are selected and the four end points are on the same circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111673504.6A CN114543610B (en) | 2021-12-31 | 2021-12-31 | Measuring rod verification device and measuring rod verification method for micrometer calibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111673504.6A CN114543610B (en) | 2021-12-31 | 2021-12-31 | Measuring rod verification device and measuring rod verification method for micrometer calibration |
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| Publication Number | Publication Date |
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| CN114543610A CN114543610A (en) | 2022-05-27 |
| CN114543610B true CN114543610B (en) | 2023-07-21 |
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| CN104534950B (en) * | 2014-12-30 | 2017-06-06 | 三明市前创微控科技有限公司 | A kind of micrometer verification system |
| CN106568358A (en) * | 2016-10-25 | 2017-04-19 | 中国计量大学 | Micrometer automatic calibration device |
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| CN214892973U (en) * | 2021-05-28 | 2021-11-26 | 常州格伦泰克工具有限公司 | Measuring jig for cutter machining |
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| CN109297379A (en) * | 2018-11-19 | 2019-02-01 | 台山核电合营有限公司 | A kind of size screw thread micrometer automatic verification system |
| CN214120962U (en) * | 2020-12-31 | 2021-09-03 | 内蒙古北方重工业集团有限公司 | Micrometer force measuring device for measuring internal dimension |
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