CN106705781B - A kind of vernier caliper internal measure-hand registration accuracy detection tool and detection method - Google Patents
A kind of vernier caliper internal measure-hand registration accuracy detection tool and detection method Download PDFInfo
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- CN106705781B CN106705781B CN201611089416.0A CN201611089416A CN106705781B CN 106705781 B CN106705781 B CN 106705781B CN 201611089416 A CN201611089416 A CN 201611089416A CN 106705781 B CN106705781 B CN 106705781B
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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
- G01B3/20—Slide gauges
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A kind of vernier caliper internal measure-hand registration accuracy detection tool and detection method, belong to test, field of measuring technique.The vernier caliper internal measure-hand registration accuracy detection tool includes fixture and standard gauge block；The fixture is made of the fixture unit of at least three groups different lengths, pedestal, fixed reference block, movable reference block and movable reference block jacking mechanism are equipped in wherein each group of fixture unit, the pedestal is equipped with sliding slot, fixed reference block is installed in described sliding slot one end, the activity reference block is arranged in sliding slot, movable reference block can move horizontally in sliding slot, and movable reference block is held out against positioning by movable reference block jacking mechanism.Using the accuracy for reducing the influence to measurement result of human factor and environmental factor after vernier caliper internal measure-hand registration accuracy detection tool of the present invention and detection method, improving work efficiency, ensure that vernier caliper internal measure-hand registration accuracy detection.
Description
Technical field
The present invention relates to a kind of cubing and detection method, especially a kind of detection vernier caliper internal measure-hand registration accuracy
Cubing and detection method, belong to test, field of measuring technique.
Background technology
Vernier caliper is a kind of measurer for measuring length, internal-and external diameter, depth, and as shown in Figure 1, vernier caliper 1 is by main scale
1-1 is formed with slidable vernier 1-2 two parts on main scale are attached to.Two secondary activities are equipped on the main scale and vernier of vernier caliper
Measuring jaw is that internal measure-hand 1-3 and exterior measuring measuring jaw 1-4, internal measure-hand 1-3 lead to commonly used to measure internal diameter, exterior measuring measuring jaw 1-4 respectively
It is commonly used to measure length and outer diameter.
According to the related standard verification requirement of country, when carrying out vernier caliper calibrating, the accuracy of internal measure-hand registration is must
One of rejection item of inspection project and verification result, it is whole that slide calliper rule are scrapped if the project verification result is unqualified.At present,
It is general that repeated calibrating is carried out using " ring standard gauge checking method " for vernier caliper internal measure-hand registration accuracy test problems
Experiment, i.e., by comparing the measures of dispersion of vernier caliper measurement numerical value and ring standard gauge internal diameter size, to judge to survey in vernier caliper
Whether the accuracy of measuring jaw registration meets the requirements, and still " ring standard gauge checking method " needs the internal diameter ruler of multiple measurement standard ring gauge
It is very little, exist measure position deviate cause internal measure-hand measurement point and the ring standard gauge center of circle not point-blank, internal measure-hand sword
Phenomena such as mouth overlooks line and groove plane out of plumb with ring standard gauge out of plumb, human eye, not only affects the accurate of verification result
Property, and working efficiency is relatively low；Simultaneously because the measuring force cause not of uniform size that different operation personnel apply when measuring, causes to contact
Pressure is improper, and form internal measure-hand cutting edge by excessive compression and then leads to reading problem bigger than normal in ring standard gauge；In addition by
It is linearly contacted between ring standard gauge in internal measure-hand cutting edge, when not clamped completely between internal measure-hand cutting edge and ring standard gauge,
Or have iron filings therebetween when sundries, it can lead to reading phenomenon less than normal.
Invention content
The present invention provides a kind of vernier caliper internal measure-hand registration accuracy detection tool and detection method, it is intended to reduce people
For the influence of factor and environmental factor to measurement result, improve working efficiency, guarantee vernier caliper internal measure-hand registration accuracy
The accuracy of detection.
To achieve the above object, the technical solution adopted in the present invention is：
A kind of vernier caliper internal measure-hand registration accuracy detection tool, including fixture and standard gauge block；The fixture by
The fixture unit composition of at least three groups different lengths, is equipped with pedestal, fixed reference block, work in wherein each group of fixture unit
Dynamic reference block and movable reference block jacking mechanism, the pedestal are equipped with sliding slot, and fixed reference block, institute are installed in described sliding slot one end
It states movable reference block to be arranged in sliding slot, movable reference block can move horizontally in sliding slot, will by movable reference block jacking mechanism
Movable reference block holds out against positioning.
Above-mentioned vernier caliper internal measure-hand registration accuracy detection tool, the activity reference block jacking mechanism include holding out against
Bolt, bolt support seat and guide pad；The bolt support seat is fixed on the chute of base other end, and the guide pad is arranged in bottom
In seat sliding slot, hole is threaded on bolt support seat and guide pad, the puller bolt is equipped with the threaded hole.
Above-mentioned vernier caliper internal measure-hand registration accuracy detection tool, the standard gauge block length are the gauge of setting
Very little, thickness matches with chute of base, and standard gauge block quantity is counted out unanimously with the measurement set in detection regulation.
A kind of vernier caliper internal measure-hand registration method for detecting accuracy, it uses above-mentioned vernier caliper internal measure-hand registration
Accuracy detection tool completes operating process, includes the following steps：
A, control metering experiment room environmental temperature and humidity is required according to vertification regulation, to being surveyed in detected vernier caliper
Measuring jaw surface is thoroughly cleaned；
B, vernier caliper internal measure-hand registration accuracy detection tool is placed on horizontal table, operation puller bolt is same
When the outside side of movable reference block is moved, to avoid standard gauge block installation space in chute of base；
C, standard gauge block corresponding with a measurement spot size is placed in chute of base, makes the inside side of movable reference block
It is mobile, puller bolt is operated, by fixed reference block, movable reference block by standard gauge block clamping and positioning；
D, it using the length dimension of detected vernier caliper internal measure-hand measurement standard gauge block, reads measured value and records；
E, change the outfit standard gauge block corresponding with another measurement spot size, the operating process of step c and d is repeated, according to inspection
Range request of establishing rules completes the detection of each measurement point；
F, aforesaid operations step is repeated by different operation person；
G, data analysis, the standard value phase that measurement result is demarcated with standard gauge block are carried out to the measurement result of aforesaid operations
It compares, the difference of the two is the error of indication, judges that detected vernier caliper internal measure-hand registration is accurate according to error of indication numerical value
Whether degree meets the requirements.
Above-mentioned vernier caliper internal measure-hand registration method for detecting accuracy, in the step a, metering experiment room environmental temperature
It is 20 ± 5 DEG C to spend, and relative humidity is 20% -80%.
Above-mentioned vernier caliper internal measure-hand registration method for detecting accuracy, in the step e, measurement is counted out no less than
Three groups.
Above-mentioned vernier caliper internal measure-hand registration method for detecting accuracy, in the step g, the vernier caliper error of indication
The calculation formula of E is：
E=L-L0
In formula：L is slide calliper rule reading value；L0 is the length of gauge block.
Above-mentioned vernier caliper internal measure-hand registration method for detecting accuracy, in the step g, it is contemplated that metering experiment room
When environment temperature deviates normal temperature, the influence of linear expansion coefficient and temperature difference, the calculation formula of vernier caliper error of indication E
For：
E=Lc-Lb+Lc α c Δ tc-Lb α b Δ tb,
In formula：Lc is the indicating value of vernier caliper (under standard conditions)；Lb is the length of gauge block (under standard conditions)；α c are trip
Mark the coefficient of thermal expansion of slide calliper rule；α b are the coefficient of thermal expansion of gauge block；Δ tc is the numerical value that vernier caliper deviates 20 DEG C of set temperature；
Δ tb is the numerical value that gauge block deviates 20 DEG C of set temperature.
The present invention is after adopting the above technical scheme, the effect with following technological progress：
Vernier caliper internal measure-hand registration accuracy detection tool of the present invention is provided at least three groups of different lengths
Fixture unit, they can clamp various sizes of standard gauge block respectively, with the different registration points to vernier caliper internal measure-hand
Position is detected, and has not only avoided clamping error caused by gauge block is pieced together in this way, but also can be consistent the height of standard gauge block, more
Convenient for being detected the measurement of vernier caliper operation, improve work efficiency.Vernier caliper internal measure-hand registration of the present invention
Method for detecting accuracy completes operating process, and the standard that measurement result and standard gauge block are demarcated using above-mentioned detection tool
For value compared to pair, the concrete numerical value of error of indication E obtained according to comparison is accurate to judge detected vernier caliper internal measure-hand registration
Whether exactness meets the requirements, which not only eliminates all defect of " ring standard gauge checking method ", goes back specification calibrating
The operating procedure of process and measurement data analysis method, so as to reduce the shadow of human factor and environmental factor to measurement result
It rings, ensure that the accuracy of vernier caliper internal measure-hand registration accuracy detection, proved by practical operation and theory analysis, this
The invention vernier caliper internal measure-hand registration method for detecting accuracy, the accuracy of measurement result is compared with " ring standard gauge is examined
Determine method " it improves nearly twice.
Description of the drawings
Fig. 1 is detected vernier caliper structure diagram according to the present invention；
Fig. 2 is vernier caliper internal measure-hand registration accuracy detection tool structure diagram of the present invention；
Fig. 3 is fixture unit structure diagram；
Fig. 4 is the vertical view of Fig. 3；
Fig. 5 is vernier caliper internal measure-hand registration accuracy detection tool working state schematic representation of the present invention.
Each label is expressed as in figure：1st, vernier caliper, 1-1, main scale, 1-2, vernier, 1-3, internal measure-hand, 1-4, external pelivimetry
Pawl, 2, detection tool, 2-1, fixture, 2-1-1, pedestal, 2-1-2, fixed reference block, 2-1-4,2-1-3, movable reference block are led
To block, 2-1-5, bolt support seat, 2-1-6, puller bolt, 2-2, standard gauge block.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and embodiments：
Referring to Fig. 2, vernier caliper internal measure-hand registration accuracy detection tool 2 of the present invention includes fixture 2-1 and mark
Quasi- gauge block 2-2；The fixture is made of the fixture unit of at least three groups different lengths.
Referring to Fig. 3, Fig. 4, in vernier caliper internal measure-hand registration accuracy detection tool 2 of the present invention, each group
Pedestal 2-1-1, fixed reference block 2-1-2, activity reference block 2-1-3 and movable reference block are equipped in fixture unit and holds out against machine
Structure, the pedestal 2-1-1 are equipped with sliding slot, in described sliding slot one end installation fixed reference block 2-1-2, the activity reference block 2-1-
3 are arranged in sliding slot, can be moved horizontally in sliding slot, hold out against movable reference block 2-1-3 by movable reference block jacking mechanism and determine
Position；The activity reference block jacking mechanism includes puller bolt 2-1-6, bolt support seat 2-1-5 and guide pad 2-1-4, described
Bolt support seat 2-1-5 is fixed on the sliding slot other end of pedestal 2-1-1, and the guide pad is arranged in the sliding slot of pedestal 2-1-1,
Hole is threaded on bolt support seat 2-1-5 and guide pad 2-1-4, the puller bolt 2-1-6 is equipped with the threaded hole.
Referring to Fig. 5, vernier caliper internal measure-hand registration method for detecting accuracy of the present invention, using above-mentioned vernier caliper
Internal measure-hand registration accuracy detection tool 2 completes operating process, includes the following steps：
A, control metering experiment room environmental temperature is 20 ± 5 DEG C, and relative humidity is 20% -80%, to detected vernier
The internal measure-hand 1-3 surfaces of slide calliper rule 1 are thoroughly cleaned；
B, above-mentioned detection tool 2 is placed on horizontal table, operation puller bolt 2-1-6 is simultaneously by movable reference block 2-
The outside side movements of 1-3, to avoid the installation space of standard gauge block 2-2 in the sliding slot of pedestal 2-1-1；
C, standard gauge block 2-2 corresponding with a measurement spot size is placed in the sliding slot of pedestal 2-1-1, makes movable benchmark
The movement of block 2-1-3 inside sides, operates puller bolt 2-1-6, by fixed reference block 2-1-2, activity reference block 2-1-3 by standard
Gauge block 2-2 clamping and positionings；
D, it using the length dimension of detected 1 internal measure-hand 1-3 measurement standard gauge blocks 2-2 of vernier caliper, reads and measures
It is worth and records；
E, change the outfit standard gauge block 2-2 corresponding with another measurement spot size, repeats the operating process of step c and d, according to
The detection of at least three groups measurement points is completed in vertification regulation requirement；
F, aforesaid operations step is repeated by different operation person；
G, data analysis is carried out to the measurement result of aforesaid operations, first by measurement result and the standard of standard gauge block calibration
Value is compared to pair, and the difference of the two is the error of indication, i.e. the calculation formula of vernier caliper error of indication E is：E=L-L0, L is in formula
Slide calliper rule reading value, L0 are the length of gauge block；When in view of metering experiment room environmental temperature departure normal temperature, linear expansion coefficient
And the influence of temperature difference, vernier caliper error of indication E calculation formula are after amendment：E=Lc-Lb+Lc α c Δ tc-Lb α b Δs
Tb, Lc is the indicating value (under standard conditions) of vernier caliper in formula, and Lb is the length (under standard conditions) of gauge block, and α c are vernier caliper
Coefficient of thermal expansion, α b are the coefficient of thermal expansion of gauge block, and Δ tc is the numerical value that vernier caliper deviates 20 DEG C of set temperature, and Δ tb is
Gauge block deviates the numerical value of 20 DEG C of set temperature.Then judged to be detected vernier caliper internal measure-hand registration according to error of indication numerical value
Whether accuracy meets the requirements.
It is verified below by test data and theoretical calculation accurate using vernier caliper internal measure-hand registration of the present invention
The accuracy of measurement result after exactness detection tool and detection method：
1st, the calibrating of the vernier caliper internal measure-hand error of indication is carried out using " ring standard gauge checking method "
Different operation person is to the same calibrating data such as following table the slide calliper rule inner measuring jaw error of indication：
(unit：mm)
Utilize formulaStandard deviation values are calculated as 0.0128mm.
2nd, vernier is carried out using vernier caliper internal measure-hand registration accuracy detection tool of the present invention and detection method
The slide calliper rule internal measure-hand error of indication is examined and determine
Different testing persons are to the same calibrating data such as following table the slide calliper rule inner measuring jaw error of indication：
(unit：mm)
Utilize formulaStandard deviation values are calculated as 0.0075mm.
Because standard deviation values are smaller, measurement accuracy is higher, it is seen that is surveyed using in vernier caliper of the present invention
Measuring jaw registration method for detecting accuracy, the accuracy of measurement result improve nearly twice compared with " ring standard gauge checking method ".
Claims (3)
1. a kind of vernier caliper internal measure-hand registration accuracy detection tool, it is characterised in that：The detection tool (2) includes folder
Have (2-1) and standard gauge block (2-2)；The fixture is made of the fixture unit of at least three groups different lengths, each group wherein
Pedestal (2-1-1), fixed reference block (2-1-2), movable reference block (2-1-3) and movable reference block top are equipped in fixture unit
Tight mechanism, the pedestal (2-1-1) is equipped with sliding slot, in described sliding slot one end installation fixed reference block (2-1-2), the activity base
Quasi- block (2-1-3) is arranged in sliding slot, and movable reference block (2-1-3) can move horizontally in sliding slot, be held out against by movable reference block
Movable reference block (2-1-3) is held out against positioning by mechanism；
The activity reference block jacking mechanism includes puller bolt (2-1-6), bolt support seat (2-1-5) and guide pad (2-1-
4)；The bolt support seat (2-1-5) is fixed on the other end of pedestal (2-1-1) sliding slot, and the guide pad is arranged in pedestal (2-
1-1) in sliding slot, hole, the puller bolt (2-1-6) are threaded on bolt support seat (2-1-5) and guide pad (2-1-4)
It is equipped with the threaded hole；
Standard gauge block (2-2) length is the standard size of setting, and the sliding slot of thickness and pedestal (2-1-1) matches, and is marked
Quasi- gauge block (2-2) quantity is counted out unanimously with the measurement set in detection regulation.
2. a kind of vernier caliper internal measure-hand registration method for detecting accuracy, it is characterised in that：It is using such as institute in claim 1
It states detection tool (2) and completes operating process, include the following steps：
A, control metering experiment room environmental temperature and humidity is required according to vertification regulation, metering experiment room environmental temperature is 20 ± 5
DEG C, relative humidity is 20% -80%, and the surface of detected vernier caliper (1) internal measure-hand (1-3) is thoroughly cleaned；
B, the detection tool (2) is placed on horizontal table, operation puller bolt (2-1-6) while by movable reference block
(2-1-3) side movement outward, to avoid the installation space of standard gauge block (2-2) in the sliding slot of pedestal (2-1-1)；
C, standard gauge block (2-2) corresponding with a measurement spot size is placed in the sliding slot of pedestal (2-1-1), makes movable benchmark
Block (2-1-3) inwardly side movement, operation puller bolt (2-1-6), by fixed reference block (2-1-2), movable reference block (2-1-
3) by standard gauge block (2-2) clamping and positioning；
D, it using the length dimension of internal measure-hand (1-3) the measurement standard gauge block (2-2) of detected vernier caliper (1), reads and surveys
Magnitude simultaneously records；
E, change the outfit standard gauge block (2-2) corresponding with another measurement spot size, the operating process of step c and d is repeated, according to inspection
Range request of establishing rules completes the detection of each measurement point, and measurement is counted out no less than three groups；
F, repeat the operating procedure of above-mentioned a-e by different operation person；
G, data analysis is carried out to the measurement result of aforesaid operations, by measurement result and the standard value of standard gauge block (2-2) calibration
Compared to pair, the difference of the two is the error of indication, is judged to be detected vernier caliper internal measure-hand registration standard according to error of indication numerical value
Whether exactness meets the requirements.
3. vernier caliper internal measure-hand registration method for detecting accuracy according to claim 2, it is characterised in that：Described
In step g, the calculation formula of vernier caliper error of indication E is：
E=L-L0
In formula：L is slide calliper rule reading value；L0 is the length of gauge block.
In the step g, it is contemplated that during metering experiment room environmental temperature departure normal temperature, vernier caliper and standard gauge block heat
The influence of the coefficient of expansion and temperature difference, the calculation formula of vernier caliper error of indication E are：
E=Lc-Lb+Lc α c Δ tc-Lb α b Δ tb,
In formula：Lc is the indicating value of vernier caliper (under standard conditions)；Lb is the length of gauge block (under standard conditions)；α c are vernier calliper
The coefficient of thermal expansion of ruler；α b are the coefficient of thermal expansion of gauge block；Δ tc is the numerical value that vernier caliper deviates 20 DEG C of set temperature；Δtb
Deviate the numerical value of 20 DEG C of set temperature for gauge block.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421409A (en) * | 2017-07-27 | 2017-12-01 | 重庆高铁计量检测有限公司 | A kind of slide measure accuracy calibrating method |
| CN109556496B (en) * | 2018-11-22 | 2020-10-23 | 北京航天计量测试技术研究所 | Device and method for ensuring consistency of working radius of centrifugal machine |
| CN110039150A (en) * | 2019-05-29 | 2019-07-23 | 苏州腾晖光伏技术有限公司 | A kind of spool residue welding linear measure longimetry tooling and measurement method |
| CN111006563A (en) * | 2019-12-10 | 2020-04-14 | 北方特种能源集团有限公司西安庆华公司 | Vernier measuring tool comprehensive detection device |
| CN114413704B (en) * | 2021-12-31 | 2023-06-02 | 西安航天计量测试研究所 | Three-point inside micrometer calibration device and calibration method |
| CN114935293B (en) * | 2022-05-12 | 2023-07-25 | 蚌埠凯盛工程技术有限公司 | Size measuring device and method for inclined bearing seat |
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| JP2003194501A (en) * | 2001-12-12 | 2003-07-09 | Brown & Sharpe Tesa Sa | Reference gauge for calibrating measuring machine and calibration method for measuring machine |
| CN201803654U (en) * | 2010-07-15 | 2011-04-20 | 贵州凯星液力传动机械有限公司 | Measuring tool for accurately measuring diameter of inner bore annular groove |
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