CN115773701A - Screw micrometer calibration system and calibration method thereof - Google Patents
Screw micrometer calibration system and calibration method thereof Download PDFInfo
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Abstract
The invention discloses a micrometer caliper calibration system and a calibration method thereof, belonging to the field of calibration and inspection. The system comprises: the device comprises a preprocessing module, an acquisition module, a processing module and a calibration module; the preprocessing module is used for preprocessing the micrometer caliper and providing effective detection values for subsequent calibration; the acquisition module is used for acquiring data tested by the micrometer screw so as to obtain the offset of the micrometer screw; the processing module carries out calibration value processing on the screw micrometer by using the offset acquired by the acquisition module; the calibration module is used for determining the requirement of a calibration target and calibrating the screw micrometer according to the requirement of the calibration target by using the encoder. Meanwhile, a micrometer caliper calibration method is provided, which can prevent the micrometer caliper from deviating along with the time variation measurement in use, so as to ensure the accuracy and timeliness of the detection result to be kept for a long time, and the application scene of micrometer caliper calibration is met based on calibration and inspection decision.
Description
Technical Field
The invention relates to the field of calibration and inspection, in particular to a micrometer caliper calibration system and a calibration method thereof.
Background
Spirometers have been widely used in a variety of applications since their development. As a tool for measuring the length, the measuring precision can be as accurate as 0.01mm. The construction of the micrometer screw is precise, and if the micrometer screw is improperly operated in the using process or the state is too frequent and even the maintenance is not considered seriously after the micrometer screw is used, the measuring surface of the micrometer screw is abraded, and the planarity and the parallelism of the micrometer screw are further influenced. Therefore, it is necessary to master the calibration of the micrometer screw.
Calibration is a direct tool, important infrastructure and key resources for laboratory testing and detection activities, is also an important component of technical capability, and is one of conditions for ensuring quality guidelines and implementing quality targets. The approval criteria provision specifies that "the laboratory should be equipped with all sampling, measurement and detection equipment required to properly perform the detection or calibration, including sampling, article preparation, data processing and analysis. Therefore, the corresponding detection equipment should be equipped according to the content and scale of the developed detection item, and can be put into use after being approved. The improvement of the technical level not only depends on the guarantee of personnel quality and environmental conditions, but also depends on the accuracy and reliability of the equipment. The method has the advantages that the management of the reinforced equipment is very important, the equipment management is an important aspect of the management, the detection quality is directly related to the detection quality, and the method plays an important role in ensuring the accuracy and reliability of the detection result. According to ISO/IEC17025: clause 5.6.1 of 2005 "detection and calibration laboratory competence approval criteria" specifies: all equipment used for testing or calibration, including auxiliary measurement equipment (e.g. equipment used for measuring the environment), which has a significant effect on the accuracy or validity of the test, calibration and sampling results, should be calibrated before being put into use. The accuracy of the detection data directly relates to the detection capability and the fairness of the detection result, the detection data is ensured to be accurate, the detection equipment needs to be periodically calibrated, and the condition that the measurement performance is deviated due to the time change of the equipment in use and possibly exceeds the error range of the allowable process, so that the risk is brought to the detection work is avoided. And according to the purpose of the expected use of the equipment and the metering characteristics of the equipment, a periodic calibration plan is formulated and organized to implement so as to ensure that the detection equipment is always in a controlled state and ensure that the accuracy and timeliness of the detection result are maintained for a long time. Therefore, the premise that the detection can really, accurately and effectively provide detection, calibration and sampling results is to carry out necessary verification and calibration on the equipment, so that the provided data has better traceability.
Therefore, a micrometer screw calibration system and a method for calibrating the same are needed to solve the above problems.
Disclosure of Invention
The present invention is directed to a micrometer screw calibration system and a calibration method thereof, so as to solve the problems mentioned in the background art.
In order to solve the technical problems, the invention provides the following technical scheme:
a micrometer screw calibration system, the system comprising: the device comprises a preprocessing module, an acquisition module, a processing module and a calibration module;
the preprocessing module is used for preprocessing the micrometer caliper and providing an effective detection value for subsequent calibration;
the acquisition module is used for acquiring data tested by the micrometer screw so as to obtain the offset of the micrometer screw;
the processing module carries out calibration value processing on the micrometer caliper by using the offset acquired by the acquisition module;
the calibration module is used for determining the requirement of a calibration target and calibrating the screw micrometer by using the encoder according to the requirement of the calibration target;
the output end of the preprocessing module is connected with the input end of the acquisition module; the output end of the acquisition module is connected with the input end of the processing module; and the output end of the processing module is connected with the input end of the calibration module.
According to the technical scheme, the acquisition module comprises a data writing unit and an offset acquisition unit;
the data writing unit is used for writing standard test data preset by the micrometer screw into a calibration system;
the offset acquisition unit is used for performing phase advancing on the micrometer caliper by taking the standard test data as a reference, performing real-time data reading in the phase advancing process until the read real-time data is consistent with the standard test data, and then recording the phase offset corresponding to the phase advancing process.
According to the above technical solution, the processing module includes a calibration value calculating unit;
and the calibration value calculating unit is used for obtaining a coordinate difference value according to the phase offset and calibrating the encoder according to the difference value.
According to the technical scheme, the calibration module comprises a calibration requirement determining unit and a calibration program unit;
the calibration requirement determining unit is used for determining whether data calibration of the micrometer screw is required;
the calibration program unit is used for calibrating the micrometer caliper by using the encoder according to the calibration requirement.
A micrometer screw calibration method, the method comprising the steps of:
s1, preprocessing a spiral micrometer;
s2, collecting data tested by the micrometer caliper to obtain the offset of the micrometer caliper;
s3, the acquired offset carries out calibration value processing on the screw micrometer;
and S4, calibrating the spiral micrometer by using the encoder according to the calibration target requirement.
According to the above technical solution, in step S1: the preprocessing of the screw micrometer is specifically to check a zero point before use, slowly rotate the fine adjustment to enable the micrometer screw rod to be in contact with the measuring anvil until the ratchet wheel makes a sound, align a zero marking line on the movable ruler with a datum line on the fixed sleeve at the moment, rotate the fixed sleeve by using the hexagonal wrench to align the zero point with the marking line, then lock the fixed screw in the fixed sleeve, and preprocess the screw micrometer to be beneficial to providing an effective detection numerical value for subsequent calibration.
According to the technical scheme, in the step S2: presetting standard test data A of the screw micrometer 1 Writing calibration system to test data A with the standard 1 For the purpose, the screw micrometer is subjected to phase advancing, and real-time data reading is performed in the phase advancing process to obtain B 1 Up to B 1 ＝A 1 That is, the read real-time data is consistent with the standard test data, and then the phase offset corresponding to the phase advancing process is recorded.
According to the above technical solution, in step S3: according to the recorded standard test data A 1 And the read real-time data B 1 Establishing a rectangular coordinate system, and mapping the coordinate system on an X axis and a Y axis according to the position deviation between the standard test data and the read real-time data, wherein A is the position deviation between the standard test data and the real-time data 1 Has the coordinates of (x) 1 ,y 1 )，B 1 Has the coordinates of (x) 2 ,y 2 ) Obtaining the phase offset by using a distance formula between two points:
| AB | is A 1 And B 1 If the displacement distance is 0, the standard test data and the read real-time data have no error; and if the displacement distance is a non-0 numerical value, indicating that the standard data and the read real-time data have errors and need to be checked.
According to the above technical solution, in step S4: according to the clear calibration target demand of phase offset, utilize detachable encoder to calibrate spiral micrometer according to calibration target demand to the condition that has the error, under the prerequisite of guaranteeing that screw rod pivoted whole circle quantity is unanimous, adjust according to phase offset, when standard test data is greater than the real-time data that reads, then carry out the complete calibration to spiral micrometer, for example: when the standard test data is that the number of the whole rotation circles of the screw rod with the length of 10 cm is two hundred circles, but the number of the rotation circles of the screw rod with the length of 9.8 cm is two hundred circles, the encoder is required to be used for carrying out complete calibration on the screw rod distance with the phase offset of 0.2 cm of the screw rod of the screw micrometer, so that the number of the rotation circles of the screw rod of the screw micrometer reaches the standard test data; when the standard test data is smaller than the read real-time data, performing reduction calibration on the screw micrometer, for example: when the standard test data is that the number of the whole rotation turns of the screw with the length of 10 cm is two hundred turns, but the number of the rotation turns of the screw with the length of 10.2 cm is two hundred turns, the phase offset of the screw micrometer is reduced by using the encoder for calibrating the screw with the length of 0.2 cm, and finally the calibration target is achieved.
Compared with the prior art, the invention has the following beneficial effects:
1. the system preprocesses the screw micrometer through the preprocessing module, and provides an effective detection value for subsequent calibration; acquiring data tested by the micrometer caliper through an acquisition module so as to obtain the offset of the micrometer caliper; the offset acquired by the acquisition module is utilized by the processing module to carry out calibration value processing on the micrometer caliper; the calibration target requirement is determined through the calibration module, and the encoder is used for calibrating the screw micrometer according to the calibration target requirement, so that the accuracy of detection data is ensured.
2. The micrometer caliper needs periodic calibration, so that the deviation of the micrometer caliper caused by time-varying measurement in use is avoided, the micrometer caliper is always in a controlled state, and the accuracy and timeliness of a detection result are kept for a long time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic flow diagram of a micrometer screw calibration system according to the present invention;
FIG. 2 is a schematic diagram of a micrometer caliper calibration method according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a micrometer caliper calibration system, the system comprising: the device comprises a preprocessing module, an acquisition module, a processing module and a calibration module;
the preprocessing module is used for preprocessing the micrometer caliper and providing an effective detection value for subsequent calibration;
the acquisition module is used for acquiring data tested by the micrometer screw so as to obtain the offset of the micrometer screw;
the processing module carries out calibration value processing on the micrometer caliper by using the offset acquired by the acquisition module;
the calibration module is used for determining the requirement of a calibration target and calibrating the screw micrometer by using the encoder according to the requirement of the calibration target;
the output end of the preprocessing module is connected with the input end of the acquisition module; the output end of the acquisition module is connected with the input end of the processing module; and the output end of the processing module is connected with the input end of the calibration module.
The acquisition module comprises a data writing unit and an offset acquisition unit;
the data writing unit is used for writing standard test data preset by the micrometer screw into a calibration system;
the offset acquisition unit is used for performing phase advancing on the micrometer caliper based on the standard test data, performing real-time data reading in the phase advancing process until the read real-time data is consistent with the standard test data, and then recording the phase offset corresponding to the phase advancing process.
The processing module comprises a calibration value calculation unit;
and the calibration value calculation unit is used for obtaining a coordinate difference value according to the phase offset and calibrating the encoder according to the difference value.
The calibration module comprises a calibration requirement determining unit and a calibration program unit;
the calibration requirement determining unit is used for determining whether data calibration of the micrometer screw is required;
the calibration program unit is used for calibrating the micrometer caliper by using the encoder according to the calibration requirement.
A micrometer screw calibration method, the method comprising the steps of:
s1, preprocessing a spiral micrometer;
s2, collecting data tested by the micrometer caliper to obtain the offset of the micrometer caliper;
s3, the acquired offset carries out calibration value processing on the screw micrometer;
and S4, calibrating the spiral micrometer by using the encoder according to the calibration target requirement.
In step S1: the method specifically comprises the steps of checking a zero point before using the screw micrometer, slowly rotating the screw micrometer to enable the micrometer screw to be in contact with the measuring anvil until the ratchet wheel makes a sound, aligning a zero marking line on the movable ruler with a datum line on the fixed sleeve, rotating the fixed sleeve by using the hexagonal wrench to enable the zero point to be aligned with the marking line, locking the fixed screw in the fixed sleeve, and preprocessing the screw micrometer to be beneficial to providing an effective detection value for subsequent calibration.
In step S2: presetting standard test data A of the micrometer screw 1 Writing calibration system to test data A with the standard 1 For the purpose, the screw micrometer is subjected to phase advancing, and real-time data reading is performed in the phase advancing process to obtain B 1 Up to B 1 ＝A 1 Instant readingAnd recording the phase offset corresponding to the phase advancing process until the acquired real-time data is consistent with the standard test data.
In step S3: according to the recorded standard test data A 1 And the read real-time data B 1 Establishing a rectangular coordinate system, and mapping the coordinate system on an X axis and a Y axis respectively according to the position deviation between the standard test data and the read real-time data, wherein A is the phase offset of the standard test data 1 Has the coordinates of (x) 1 ,y 1 )，B 1 Has the coordinates of (x) 2 ,y 2 ) Obtaining the phase offset by using a distance formula between two points:
| AB | is A 1 And B 1 If the displacement distance is 0, the standard test data and the read real-time data have no error; and if the displacement distance is a non-0 numerical value, indicating that the standard data and the read real-time data have errors and needing to be verified.
In step S4: according to the phase offset, the calibration target requirement is determined, the detachable encoder is used for calibrating the screw micrometer according to the calibration target requirement under the condition of error, and on the premise of ensuring the consistency of the whole rotating circle number of the screw, the adjustment is carried out according to the phase offset. And when the standard test data is larger than the read real-time data, performing complete calibration on the screw micrometer, for example: when the standard test data is that the number of the whole rotation circle of the screw rod with the length of 10 cm is two hundred circles, but the number of the rotation circle of the screw rod with the length of 9.8 cm is two hundred circles, the encoder is required to be used for carrying out complete calibration on the screw rod distance with the phase offset of 0.2 cm of the screw rod of the screw micrometer, so that the number of the rotation circle of the screw rod of the screw micrometer reaches the standard test data; when the standard test data is smaller than the read real-time data, performing reduction calibration on the screw micrometer, for example: when the standard test data is that the number of the whole rotation turns of the screw with the length of 10 cm is two hundred turns, but the number of the rotation turns of the screw with the length of 10.2 cm is two hundred turns, the phase offset of the screw micrometer is reduced by using the encoder for calibrating the screw with the length of 0.2 cm, and finally the calibration target is achieved.
The first embodiment is as follows: the method comprises the steps of preprocessing a screw micrometer, checking a zero point before use, slowly rotating for fine adjustment to enable a micrometer screw to be in contact with a measuring anvil until a ratchet wheel makes a sound, aligning a zero marking line on a movable ruler with a datum line on a fixed sleeve at the moment, rotating the fixed sleeve by using a hexagonal wrench to align the zero point with the datum line, locking a fixed screw in the fixed sleeve, and preprocessing the screw micrometer to be beneficial to providing an effective detection value for subsequent calibration. Presetting standard test data A of the screw micrometer 1 =20 write calibration system, test data a with said standard 1 For the purpose, the screw micrometer is subjected to phase advancing, and real-time data reading is performed in the phase advancing process to obtain B 1 And =18, then recording the phase shift amount corresponding to the current phase advancing process. According to the recorded standard test data A 1 And the read real-time data B 1 Establishing a rectangular coordinate system, and mapping the coordinate system on an X axis and a Y axis respectively according to the position deviation between the standard test data and the read real-time data, wherein A is the phase offset of the standard test data 1 Has the coordinates of (0, 20), B 1 Is (0, 18) the phase shift amount is obtained using the equation for the distance between two points:
AB is A 1 And B 1 And if the phase offset distance is 2, it indicates that there is an error between the standard data and the read real-time data, and the calibration is required. According to the phase offset, determining the calibration target requirement, calibrating the screw micrometer by using a detachable encoder under the condition of error according to the calibration target requirement, and on the premise of ensuring the consistency of the number of the whole rotation circles of the screw rod, when the standard test data is greater than the read standard test dataAnd (4) performing complete calibration on the screw micrometer according to the real-time data, and when the standard test data is A 1 Number of full turns of screw rotation of =20 cm should be four hundred turns, but real time data read is B 1 If the number of turns of the screw rod rotating by the length of =18 cm is four hundred turns, the encoder needs to be used for performing complete calibration on the screw rod distance of the screw micrometer with the phase offset of 2 cm, so that the number of turns of the screw rod rotating by the screw micrometer reaches standard test data, and finally a calibration target is reached.
Example two: the screw micrometer is preprocessed, a zero point is checked before the screw micrometer is used, fine adjustment is slowly rotated to enable the micrometer screw to be in contact with the measuring anvil until the ratchet wheel makes a sound, a zero marking line on the movable ruler is aligned with a datum line on the fixed sleeve, the fixed sleeve is rotated by the hexagonal wrench to enable the zero point to be aligned with the datum line, then the fixed screw in the fixed sleeve is locked, and the screw micrometer is preprocessed to be beneficial to providing effective detection numerical values for subsequent calibration. Presetting standard test data A of the micrometer screw 1 =20 write calibration system, test data a with said standard 1 For the purpose, the screw micrometer is subjected to phase advancing, and real-time data reading is performed in the phase advancing process to obtain B 1 And =22, then recording the phase shift amount corresponding to the current phase advancing process. According to the recorded standard test data A 1 And the read real-time data B 1 Establishing a rectangular coordinate system, and mapping the coordinate system on an X axis and a Y axis respectively according to the position deviation between the standard test data and the read real-time data, wherein A is the phase offset of the standard test data 1 Has the coordinates (0, 20), B 1 Is (0, 22) the phase shift amount is obtained using the equation for the distance between two points:
AB is A 1 And B 1 And if the phase offset distance is 2, it indicates that there is an error between the standard data and the read real-time data, and the calibration is required. Defining calibration objectives based on the phase offsetThe calibration requirement is that the detachable encoder is utilized to calibrate the screw micrometer according to the calibration target requirement under the condition with errors, on the premise that the number of the whole rotating circles of the screw rod is consistent, when the standard test data is smaller than the read real-time data, the screw micrometer is subjected to reduction calibration, and when the standard test data is A 1 Number of full turns of screw rotation of =20 cm should be four hundred turns, but real time data read is B 1 If the number of turns of the screw rod of which the length is =22 cm is four hundred, the encoder needs to be used for reducing and calibrating the screw rod distance of which the phase offset is 2 cm of the micrometer screw rod, so that the number of turns of the screw rod of the micrometer screw rod reaches standard test data, and finally the calibration target is reached.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A micrometer screw calibrating system and a calibrating method thereof are characterized in that: the system comprises: the device comprises a preprocessing module, an acquisition module, a processing module and a calibration module;
the preprocessing module is used for preprocessing the micrometer caliper and providing an effective detection value for subsequent calibration;
the acquisition module is used for acquiring data tested by the micrometer screw so as to obtain the offset of the micrometer screw;
the processing module carries out calibration value processing on the screw micrometer by using the offset acquired by the acquisition module;
the calibration module is used for determining the requirement of a calibration target and calibrating the screw micrometer by using the encoder according to the requirement of the calibration target;
the output end of the preprocessing module is connected with the input end of the acquisition module; the output end of the acquisition module is connected with the input end of the processing module; and the output end of the processing module is connected with the input end of the calibration module.
2. A micrometer caliper calibration system according to claim 1, wherein: the acquisition module comprises a data writing unit and an offset acquisition unit;
the data writing unit is used for writing standard test data preset by the micrometer screw into a calibration system;
the offset acquisition unit is used for performing phase advancing on the micrometer caliper based on the standard test data, performing real-time data reading in the phase advancing process until the read real-time data is consistent with the standard test data, and then recording the phase offset corresponding to the phase advancing process.
3. The micrometer caliper calibration system of claim 1, wherein: the processing module comprises a calibration value calculation unit;
and the calibration value calculation unit is used for obtaining a coordinate difference value according to the phase offset and calibrating the encoder according to the difference value.
4. The micrometer caliper calibration system of claim 1, wherein: the calibration module comprises a calibration requirement determining unit and a calibration program unit;
the calibration requirement determining unit is used for determining whether data calibration of the micrometer screw is required;
the calibration program unit is used for calibrating the micrometer caliper by using the encoder according to the calibration requirement.
5. A micrometer screw calibrating method is characterized in that: the method comprises the following steps:
s1, preprocessing a spiral micrometer;
s2, collecting data tested by the micrometer caliper to obtain the offset of the micrometer caliper;
s3, carrying out calibration value processing on the screw micrometer by using the obtained offset;
and S4, calibrating the spiral micrometer by using the encoder according to the calibration target requirement.
6. The micrometer caliper calibration method of claim 5, wherein: in step S1: the preprocessing of the screw micrometer is carried out by checking a zero point before use, slowly rotating and finely adjusting to enable the micrometer screw rod to be contacted with the measuring anvil until the ratchet wheel makes a sound, aligning a zero marking line on the movable ruler with a datum line on the fixed sleeve, rotating the fixed sleeve by using a hexagonal wrench to align the zero point with the datum line, and then locking a fixed screw in the fixed sleeve.
7. The micrometer caliper calibration method of claim 5, wherein: in step S2: presetting standard test data A of the screw micrometer 1 Writing calibration system to test data A with the standard 1 For the purpose, the screw micrometer is subjected to phase advancing, and real-time data reading is performed in the phase advancing process to obtain B 1 Up to B 1 ＝A 1 I.e. the read real-time data is in accordance with the standard test dataAnd then recording the phase shift amount corresponding to the phase advancing process.
8. The micrometer caliper calibration method of claim 5, wherein: in step S3: according to the recorded standard test data A 1 And the read real-time data B 1 Establishing a rectangular coordinate system, and mapping the coordinate system on an X axis and a Y axis respectively according to the position deviation between the standard test data and the read real-time data, wherein A is the phase offset of the standard test data 1 Has the coordinates of (x) 1 ,y 1 )，B 1 Has the coordinates of (x) 2 ,y 2 ) Obtaining the phase offset by using a distance formula between two points:
AB is A 1 And B 1 If the displacement distance is 0, the standard test data and the read real-time data have no error; and if the displacement distance is a non-0 numerical value, indicating that the standard data and the read real-time data have errors and need to be checked.
9. The micrometer caliper calibration method of claim 5, wherein: in step S4: determining a calibration target requirement according to the phase offset, calibrating the screw micrometer according to the calibration target requirement by using a detachable encoder under the condition of an error, adjusting according to the phase offset on the premise of ensuring the consistency of the number of the whole rotation circles of the screw, and performing complete calibration on the screw micrometer when standard test data is greater than the read real-time data; and when the standard test data is smaller than the read real-time data, performing reduction calibration on the screw micrometer to finally reach a calibration target.
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| CN202211666056.1A CN115773701A (en) | 2022-12-23 | 2022-12-23 | Screw micrometer calibration system and calibration method thereof |
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