CN104457648B - The acquisition methods of the Tolerance of Degree of position of the size and measurement pin of measurement pin - Google Patents
The acquisition methods of the Tolerance of Degree of position of the size and measurement pin of measurement pin Download PDFInfo
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- CN104457648B CN104457648B CN201410798951.8A CN201410798951A CN104457648B CN 104457648 B CN104457648 B CN 104457648B CN 201410798951 A CN201410798951 A CN 201410798951A CN 104457648 B CN104457648 B CN 104457648B
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- measurement pin
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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
Abstract
The present invention provides the acquisition methods of a kind of size of measurement pin and the Tolerance of Degree of position of measurement pin, measurement pin is for determining whether the position degree to gaging hole meets the requirements, the size of measurement pin includes the nominal size of measurement pin and the dimensional discrepancy of measurement pin, and acquisition methods include: to obtain to the virtual size of gaging hole and the gross tolerance of measurement pin；It obtains to the virtual size of gaging hole and the diameter tolerance of measurement pin；The nominal size of measurement pin is determined by the gross tolerance of virtual size and measurement pin to gaging hole；The size of measurement pin is determined by the nominal size of measurement pin and the dimensional discrepancy of measurement pin；The Tolerance of Degree of position of measurement pin is determined by the gross tolerance of measurement pin and the diameter tolerance of measurement pin.Technical solution of the present invention solves designer in the prior art and comes to carry out value to the size of measurement pin and the Tolerance of Degree of position of measurement pin by experience, and experience value has uncertain problem.
Description
Technical field
The present invention relates to field of mechanical part measurement, the position of size and measurement pin in particular to a kind of measurement pin
The acquisition methods of degree of setting tolerance.
Background technique
The accuracy detection for the size that position degree receiver ga(u)ge is frequently used for component test surface when having a maximum material requirement, example
The precision of measured hole is such as detected using measurement pin.The value of measurement pin size be directly related to whether can accurately detect it is tested
The precision in hole, thus the value of the size of measurement pin when detecting part actual profile on then aobvious be even more important.Design at present
Personnel's value is all to carry out value to the gauge size of measurement pin by experience, has uncertainty.
Summary of the invention
The main purpose of the present invention is to provide the acquisition sides of a kind of size of measurement pin and the Tolerance of Degree of position of measurement pin
Method is taken with solving designer in the prior art by experience come the Tolerance of Degree of position of size and measurement pin to measurement pin
Value, experience value have uncertain problem.
To achieve the goals above, obtaining the present invention provides the Tolerance of Degree of position of a kind of size of measurement pin and measurement pin
Method is taken, measurement pin is for determining whether the position degree to gaging hole meets the requirements, and the size of measurement pin includes the name of measurement pin
The dimensional discrepancy of size and measurement pin, acquisition methods include: to obtain to the virtual size of gaging hole and the gross tolerance of measurement pin；It obtains
Take the diameter tolerance of the virtual size and measurement pin to gaging hole；Pass through the gross tolerance of virtual size and measurement pin to gaging hole
Determine the nominal size of measurement pin；The size of measurement pin is determined by the nominal size of measurement pin and the dimensional discrepancy of measurement pin；
The Tolerance of Degree of position of measurement pin is determined by the gross tolerance of measurement pin and the diameter tolerance of measurement pin.
Further, the gross tolerance for obtaining measurement pin includes: that the gross tolerance of measurement pin is determined by the position degree to gaging hole.
Further, determine that the gross tolerance of measurement pin includes: the position degree a satisfaction to gaging hole by the position degree to gaging hole
When 0mm < a≤0.05mm, the gross tolerance of measurement pin takes 60% of the position degree numerical value to gaging hole；Position degree a to gaging hole meets
When 0.05mm < a≤0.1mm, the gross tolerance of measurement pin takes 50% of the position degree numerical value to gaging hole；Position degree a to gaging hole is full
When sufficient 0.01mm < a≤0.15mm, the gross tolerance of measurement pin takes 40% of the position degree numerical value to gaging hole；Position degree to gaging hole
When a meets 0.15mm < a≤0.25mm, the gross tolerance of measurement pin takes 30% of the position degree numerical value to gaging hole；Position to gaging hole
When degree of setting 0.25mm < a≤0.5mm, the gross tolerance of measurement pin takes 20% of the position degree numerical value to gaging hole；Position to gaging hole
When degree a meets a > 0.5mm, the gross tolerance of measurement pin takes 20% of the position degree numerical value to gaging hole.
Further, the step of the nominal size of measurement pin is determined by the gross tolerance of virtual size and measurement pin to gaging hole
In rapid, the nominal size of measurement pin is obtained by following formula: A=(B+F)/2；Wherein, A is the nominal size of measurement pin, and B is
To the virtual size of gaging hole, F is the virtual size of measurement pin, wherein the virtual size of measurement pin is obtained by following formula: F
=B+E；Wherein, F is the virtual size of measurement pin, and B is the virtual size to gaging hole, and E is the gross tolerance of measurement pin.
Further, it is obtained to the virtual size of gaging hole by following formula: B=G+H-I；B is the actual effect ruler to gaging hole
Very little, G is the nominal size to gaging hole, and H is the lower deviation to gaging hole, and I is the position degree to gaging hole.
Further, the dimensional discrepancy of measurement pin includes the allowance above nominal size of measurement pin and the allowance below nominal size of measurement pin,
The difference of the allowance below nominal size of the allowance above nominal size and measurement pin of measurement pin is equal to the diameter tolerance of measurement pin.
Further, the diameter tolerance for obtaining measurement pin includes: the diameter that measurement pin is determined by the position degree to gaging hole
Tolerance.
Further, by the position degree to gaging hole determine measurement pin diameter tolerance include: to gaging hole position degree a it is full
When sufficient 0mm < a≤0.05mm, measurement pin diameter tolerance takes 0.005mm；Position degree a to gaging hole meet 0.05mm < a≤
When 0.1mm, measurement pin diameter tolerance takes 0.01mm；When the position degree a of gaging hole meets 0.01mm < a≤0.15mm, measurement pin
Diameter tolerance takes 0.01mm；When the position degree a of gaging hole meets 0.15mm < a≤0.25mm, measurement pin diameter tolerance is taken
0.01mm；When the position degree a of gaging hole meets 0.25mm < a≤0.5mm, measurement pin diameter tolerance takes 0.01mm；To gaging hole
When position degree a meets a > 0.5mm, measurement pin diameter tolerance takes 0.02mm.
Further, the Tolerance of Degree of position of measurement pin is determined by the diameter tolerance of the gross tolerance of measurement pin and measurement pin
The step of in, the Tolerance of Degree of position of measurement pin passes through following formula and obtains: D=(E-C)/2；Wherein, D is the position degree of measurement pin
Tolerance, E are the gross tolerance of measurement pin, and C is the diameter tolerance of measurement pin.
Further, the step of the nominal size of measurement pin is determined by the gross tolerance of virtual size and measurement pin to gaging hole
In rapid, the nominal size of the measurement pin is obtained by following formula: A=B+C/2+D；Wherein, A is the nominal ruler of measurement pin
Very little, B is the virtual size to gaging hole, and C is the diameter tolerance of measurement pin, and D is the Tolerance of Degree of position of measurement pin；Wherein, measurement pin
Tolerance of Degree of position pass through following formula obtain: D=(E-C)/2；Wherein, D is the Tolerance of Degree of position of measurement pin, and E is measurement pin
Gross tolerance, C be measurement pin diameter tolerance.
It applies the technical scheme of the present invention, obtains the virtual size to gaging hole, obtain the diameter tolerance of measurement pin, obtain and survey
The gross tolerance for measuring pin is obtained by the diameter tolerance of virtual size, measurement pin to gaging hole and the gross tolerance of acquisition measurement pin
The Tolerance of Degree of position of measurement pin size and measurement pin.Technical staff need to only be can be obtained by above-mentioned numerical value measurement pin size and
The Tolerance of Degree of position of measurement pin, it is not necessary to lean on experience value again.Technical solution of the present invention can efficiently solve designer and lean on
Experience to carry out value to the size of measurement pin and the Tolerance of Degree of position of measurement pin, and experience value has uncertain problem.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram of tested part in the embodiment of the calculation method of measurement pin size according to the present invention；
And
Fig. 2 shows the virtual sizes, the position of related features of measured hole of the measured hole of tested part in embodiment, measured hole
The schematic relationships of maximum material size and measurement pin dimensional values.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
This application provides the acquisition methods of a kind of size of measurement pin and the Tolerance of Degree of position of measurement pin, measurement pin is used for
Whether measurement is qualified to the size and location degree of gaging hole.The virtual size of acquisition pores obtains the diameter tolerance of measurement pin, obtains and surveys
The gross tolerance of pin is measured, the gross tolerance of the virtual size of through hole, the diameter tolerance of measurement pin and acquisition measurement pin is measured
Sell the Tolerance of Degree of position of size and measurement pin.
Wherein, the size of measurement pin includes the nominal size of measurement pin and the dimensional discrepancy of measurement pin.
The present invention obtains the nominal size of measurement pin there are two types of method, and the method that the first obtains measurement pin nominal size is logical
Following formula is crossed to obtain:
Formula 1:A=B+C/2+D；
Wherein, A is the nominal size of measurement pin, and B is the virtual size to gaging hole, and C is the diameter tolerance of measurement pin, and D is
The Tolerance of Degree of position of measurement pin；
Wherein, the Tolerance of Degree of position of measurement pin is obtained by following formula:
Formula 2:D=(E-C)/2；
Wherein, D is the Tolerance of Degree of position of measurement pin, and E is the gross tolerance of measurement pin, and C is the diameter tolerance of measurement pin.
Second of method for obtaining measurement pin nominal size is obtained by following formula:
Formula 3:A=(B+F)/2；
Wherein, A is the nominal size of measurement pin, and F is the virtual size of measurement pin,
Wherein, the virtual size of measurement pin is obtained by following formula:
Formula 4:F=B+E；
Wherein, B is the virtual size to gaging hole, and E is the gross tolerance of measurement pin.
After obtaining the nominal size of measurement pin, the Tolerance of Degree of position of measurement pin, the Tolerance of Degree of position of measurement pin are also obtained
It is obtained by formula 2.
After obtaining the nominal size of measurement pin and the Tolerance of Degree of position of measurement pin by method one and method two, need
Determine the dimensional discrepancy of measurement pin.The difference of the upper deviation and lower deviation that the dimensional discrepancy of measurement pin meets measurement pin is equal to measurement pin
Diameter tolerance.
In above-mentioned formula, the virtual size in hole is calculated value, and according to the prior art, the virtual size of part is that have in part
The size proposed under the premise of having maximum material size requirement, for hole, virtual size calculation formula are as follows:
Formula 5:B=G+H-I
Wherein, B is virtual size to gaging hole, and G is the nominal size to gaging hole, and H is the lower deviation to gaging hole, I be to
The position degree of gaging hole.
Wherein, in formula 5, the position degree in hole has different take according to the size difference in hole and the difference of required precision
Value, the position in hole can obtain in the prior art.
In above-mentioned formula, the value of the gross tolerance of the value and measurement pin of the diameter tolerance of measurement pin and the position degree in hole
It is related, specifically:
When the position degree a of gaging hole meets 0mm < a≤0.05mm, measurement pin diameter tolerance takes 0.005mm, measurement pin
Gross tolerance takes the 60% of the position degree numerical value in hole；
When the position degree a of gaging hole meets 0.05mm < a≤00.1mm, measurement pin diameter tolerance takes 0.01mm, measurement pin
Gross tolerance take hole position degree numerical value 50%；
When the position degree a of gaging hole meets 0.01mm < a≤0.15mm, measurement pin diameter tolerance takes 0.01mm, measurement pin
Gross tolerance take hole position degree numerical value 40%；
When the position degree a of gaging hole meets 0.15mm < a≤0.25mm, measurement pin diameter tolerance takes 0.01mm, measurement pin
Gross tolerance take hole position degree numerical value 30%；
When the position degree a of gaging hole meets 0.25mm < a≤0.5mm, measurement pin diameter tolerance takes 0.01mm, measurement pin
Gross tolerance takes the 20% of the position degree numerical value in hole；
When the position degree a of gaging hole meets a > 0.5mm, measurement pin diameter tolerance takes 0.02mm, and the gross tolerance of measurement pin takes
The 20% of the position degree numerical value in hole.
In order to make it easy to understand, the above value is listed in a tabular form, it is specific as follows:
1 unit of table is millimeter
In above-mentioned relation, if the position degree of fruit product is boundary value, then it is in the case where considering to take value of risk, measurement pin
Gross tolerance take the numerical value of small percentage, while the diameter tolerance of measurement pin takes value corresponding with measurement pin gross tolerance.
Therefore, by above-mentioned formula, designer need to only obtain the virtual size and table 1 in hole, can obtain measurement pin
Size and measurement pin Tolerance of Degree of position.The measurement fabricated according to the Tolerance of Degree of position of the size of measurement pin and measurement pin
Pin can measure the position degree precision of measured hole.
In order to better understand above-mentioned formula and value relationship, illustrate the use of above-mentioned formula and table 1 with way of example below
Method.It should be understood that in following example, in the nominal size for determining measurement pin, using above-mentioned second method
It carries out.
The part to be measured of preferred embodiment as shown in Figure 1, parts measurement position to be measured hole size φ K=φ 3mm, it is upper partially
Difference is that ﹢ 0.1mm lower deviation is 0mm, and technique requires on the basis of the axis of the external splines E gear teeth, the size of measurement pin is determined, to sentence
Whether the position degree in the disconnected hole φ K is qualified, and meets the requirement of position degree φ 0.1mm.
The present embodiment obtains the size of positioning pin by method one, and product waits for that the position degree of gaging hole φ K is 0.1mm, and
It and is boundary value.According to taking value of risk principle, the gross tolerance of measurement pin is according to the downward value in boundary, therefore the gross tolerance of measurement pin
Account for the 40% of part position accuracy tolerance φ 0.1mm, therefore the gross tolerance of measurement pin are as follows:
0.1*0.4=0.04mm
It is 0.01mm according to the diameter tolerance that measurement pin can be obtained in table 1.
Virtual size according to formula 5, to gaging hole φ K are as follows:
3+0-0.1=2.9mm
According to formula 2, the Tolerance of Degree of position of measurement pin are as follows:
(0.04-0.01)/2=0.015mm
The diameter tolerance of the above-mentioned virtual size of φ K acquired, the Tolerance of Degree of position of measurement pin and measurement pin is brought into
Formula 1, the nominal size of measurement pin are as follows:
2.9+0.01/2+0.015=2.92mm
The diameter tolerance of measurement pin is 0.01mm, then the deviation of measurement pin can take ± 0.005mm.
It can be calculated by above-mentioned, 2.92 ± 0.005mm is in Fig. 1 for measuring the survey in part to be measured to gaging hole φ K
Amount pin size.Concrete operations are to make measurement pin according to the size of 2.92 ± 0.005mm, while guaranteeing the position degree of measurement pin
Tolerance is less than 0.015mm.In the detection process, measurement pin can be assert and close to gaging hole φ K position degree through to gaging hole φ K
Lattice, and and meet the requirement of position degree φ 0.1mm.
The virtual size of the measured hole of tested part, the position of related features of measured hole, measured hole maximum material size and
The relationship of measurement pin size value is as indicated with 2.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (1)
1. a kind of acquisition methods of the Tolerance of Degree of position of the size and measurement pin of measurement pin, the measurement pin is for determining to gaging hole
Position degree whether meet the requirements, the accuracy detection of size when having maximum material requirement for component test surface, feature
It is, the size of measurement pin includes the nominal size of measurement pin and the dimensional discrepancy of measurement pin, obtains the nominal size of measurement pin
Method, including following two:
The first method for obtaining measurement pin nominal size is obtained by following formula:
Formula 1:A=B+C/2+D；
Wherein, A is the nominal size of measurement pin, and B is the virtual size to gaging hole, and C is the diameter tolerance of measurement pin, and D is measurement
The Tolerance of Degree of position of pin；
Wherein, the Tolerance of Degree of position of measurement pin is obtained by following formula:
Formula 2:D=(E-C)/2；
Wherein, D is the Tolerance of Degree of position of measurement pin, and E is the gross tolerance of measurement pin, and C is the diameter tolerance of measurement pin；
Second of method for obtaining measurement pin nominal size is obtained by following formula:
Formula 3:A=(B+F)/2；
Wherein, A is the nominal size of measurement pin, and F is the virtual size of measurement pin,
Wherein, the virtual size of measurement pin is obtained by following formula:
Formula 4:F=B+E；
Wherein, B is the virtual size to gaging hole, and E is the gross tolerance of measurement pin,
After obtaining the nominal size of measurement pin, the Tolerance of Degree of position of measurement pin is also obtained, the Tolerance of Degree of position of measurement pin passes through
Formula 2 obtains；
After obtaining the nominal size of measurement pin and the Tolerance of Degree of position of measurement pin by method one and method two, it is thus necessary to determine that
The dimensional discrepancy of measurement pin, the dimensional discrepancy of measurement pin meet the upper deviation of measurement pin absolute value and lower deviation absolute value it
With the diameter tolerance for being equal to measurement pin；
In above-mentioned formula, the virtual size in hole is calculated value, and according to the prior art, the virtual size of part is that have most in part
The size that big entity size proposes under the premise of requiring, for hole, virtual size calculation formula are as follows:
Formula 5:B=G+H-I；
Wherein, B is the virtual size to gaging hole, and G is the nominal size to gaging hole, and H is the lower deviation to gaging hole, and I is to gaging hole
Position degree；
Wherein, in formula 5, the position degree in hole has different values according to the size difference in hole and the difference of required precision,
The position in hole can obtain in the prior art；
It obtains described to the virtual size of gaging hole and the gross tolerance of the measurement pin；
The gross tolerance of the measurement pin is determined by the position degree to gaging hole；
In above-mentioned formula, the value of the gross tolerance of the value and measurement pin of the diameter tolerance of measurement pin and the position degree to gaging hole
It is related, specifically:
When the position degree a of gaging hole meets 0mm < a≤0.05mm, measurement pin diameter tolerance takes 0.005mm, total public affairs of measurement pin
Difference takes the 60% of the position degree numerical value in hole；
When the position degree a of gaging hole meets 0.05mm < a≤00.1mm, measurement pin diameter tolerance takes 0.01mm, measurement pin it is total
Tolerance takes the 50% of the position degree numerical value in hole；
When the position degree a of gaging hole meets 0.01mm < a≤0.15mm, measurement pin diameter tolerance takes 0.01mm, measurement pin it is total
Tolerance takes the 40% of the position degree numerical value in hole；
When the position degree a of gaging hole meets 0.15mm < a≤0.25mm, measurement pin diameter tolerance takes 0.01mm, measurement pin it is total
Tolerance takes the 30% of the position degree numerical value in hole；
When the position degree a of gaging hole meets 0.25mm < a≤0.5mm, measurement pin diameter tolerance takes 0.01mm, total public affairs of measurement pin
Difference takes the 20% of the position degree numerical value in hole；
When the position degree a of gaging hole meets a > 0.5mm, measurement pin diameter tolerance takes 0.02mm, and the gross tolerance of measurement pin takes hole
The 20% of position degree numerical value；
In above-mentioned relation, if the position degree in fruit product hole to be measured is boundary value, then it is in measurement in the case where considering to take value of risk
The gross tolerance of pin takes the numerical value of small percentage, while the diameter tolerance of measurement pin takes value corresponding with measurement pin gross tolerance；
It obtains described to the virtual size of gaging hole and the diameter tolerance of the measurement pin；
The nominal size of the measurement pin is determined by the gross tolerance of the virtual size to gaging hole and the measurement pin；
The size of the measurement pin is determined by the nominal size of the measurement pin and the dimensional discrepancy of the measurement pin；
The Tolerance of Degree of position of the measurement pin is determined by the gross tolerance of the measurement pin and the diameter tolerance of measurement pin；
The virtual size and above-mentioned relation to gaging hole need to be only obtained, the size of measurement pin and the position degree of measurement pin can be obtained
Tolerance can measure the position of measured hole according to the measurement pin that the Tolerance of Degree of position of the size of measurement pin and measurement pin fabricates
Degree of setting precision.
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| CN105716552B (en) * | 2015-05-28 | 2018-12-04 | 中国电子科技集团公司第四十一研究所 | The determination method of terahertz waveguide flange shop bolt hole location |
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| JP2007198859A (en) * | 2006-01-25 | 2007-08-09 | Chugoku Electric Power Co Inc:The | Position measuring method, displacement measuring method, and monitoring method of displacement |
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| KR20110126252A (en) * | 2010-05-17 | 2011-11-23 | 한국기계연구원 | Method for measuring deviation of machine with 3 axes moving table |
| CN103017701A (en) * | 2012-12-06 | 2013-04-03 | 山东捷众汽车零部件有限公司 | Measuring method and device of three-coordinate according to relative position relationships |
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