CN103542789A - Measuring device for width or height tolerance in irregular profile steel - Google Patents
Measuring device for width or height tolerance in irregular profile steel Download PDFInfo
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- CN103542789A CN103542789A CN201310456175.9A CN201310456175A CN103542789A CN 103542789 A CN103542789 A CN 103542789A CN 201310456175 A CN201310456175 A CN 201310456175A CN 103542789 A CN103542789 A CN 103542789A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 86
- 239000010959 steel Substances 0.000 title claims abstract description 86
- 230000001788 irregular Effects 0.000 title claims abstract description 23
- 210000000078 claw Anatomy 0.000 claims abstract description 78
- 238000005259 measurement Methods 0.000 claims abstract description 52
- 229910001315 Tool steel Inorganic materials 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
A measuring device for width or height tolerance in irregular profile steel comprises a measuring body and a vernier. One end of the lower portion of the measuring body is provided with a fixed measuring claw, and the other end of the lower portion of the measuring body is provided with a reading measuring claw. The inner face of the fixed measuring claw is perpendicular to the measuring body. The inner face of the reading measuring claw and the vertical direction of the body form an included angle theta. The inner face of the reading measuring claw is provided graduation marks; a graduation maximum is marked as a positive tolerance of profile steel under measurement, a graduation minimum is marked as a negative tolerance of the profile steel under measurement. The vernier capable of sliding along the inner face is disposed inside the reading measuring claw. The outer face of the vernier is parallel to the inner face of the reading measuring claw. The inner face of the vernier is perpendicular to the body. When an indicating line of the vernier points at a graduation mark 0 of the reading measuring claw, a distance between the inner face of the fixed measuring claw and the inner face of the vernier is equal to nominal width or height of the profile steel under measurement.
Description
Technical field
The present invention relates to the width of the measurement of dimension of object, particularly irregular shaped steel or the measurement mechanism of height tolerance.
Background technology
Dimensional measurement tool kind is various, and iron and steel is considered high temperature, wear-resisting and accuracy requirement in producing, and the dimensional measurement of shaped steel adopts vernier caliper conventionally.The object that steel section size is measured is that the tolerance allowing according to standard judges whether steel section size reaches standard-required by measurement result and nominal size contrast.If size, within the scope of standard code, records measurement result, if size exceeds standard code scope, be judged to be waste product.
Shaped steel for regular shape, as H shaped steel, channel-section steel, angle steel, joist steel etc., employing vernier caliper measurement is convenient and swift, and can guarantee higher measuring accuracy, this is because the medial surface of vernier caliper measuring jaw is parallel to each other, when measuring the distance of two parallel surfaces, while making measuring claw inner side be close to measurement face, can obtain measurement result accurately, see Fig. 1.
If object being measured two ends are not parallel planes, the in the situation that of having plane in broad ways, can make the blade of slide calliper rule compress this plane and measure, also can obtain measurement result accurately.
But for shaped steel in irregular shape, because shaped steel two ends are without parallel plane, though and have plane in broad ways, but because there being projection cannot make vernier caliper blade lean in plane, during measurement, roughly broad ways is measured, vernier caliper blade and Width can exist certain angle a(to see Fig. 2), make measured value be greater than actual value and cause result distortion.
202141405U discloses a kind of vernier caliper that can measure out-of-shape object length.This vernier caliper comprises with the measurer main body of main scale with the slide block of secondary chi; Described measurer main body is provided with a groove, and this groove is parallel with described main scale; Described secondary chi is connected with described slide block through link, and described link is arranged in the groove of described measurer main body.This utility model is only confined to measure the length of surface irregularity object.
102927879A discloses a kind of pick-up unit for detection of irregular structure regional area planform tolerance, the detection faces of the detection piece of this device is simulated the structure profile that will detect completely, and makes logical only structure according to the desired tolerance values of structure profile that will detect.When detecting the go side of piece, can pass through smoothly detected structure profile, and when not-go-end can stop detection piece to pass through, the detection profile of this structure is qualified, otherwise is defective.This pick-up unit will be made the detection faces that detects piece according to regional area planform, so complicated structure, and cost is higher.
Summary of the invention
In order to solve the accurate measurement problem to irregular shaped steel, overcome the defect that above-mentioned measurement mechanism exists, the actual needs that the present invention measures from shaped steel, adopts the measuring principle different from vernier caliper, and a kind of width or height tolerance measurement mechanism of irregular shaped steel is provided.
The width of irregular shaped steel of the present invention or height tolerance measurement mechanism comprise: measure main body and vernier, downside one end of measuring main body arranges fixation measuring pawl, the other end arranges reading measuring claw, the medial surface of fixation measuring pawl is vertical with measurement main body, reading measuring claw medial surface is θ with the angle of measuring main body vertical direction, on reading measuring claw medial surface, be carved with scale, the inner side of reading measuring claw is provided with the vernier that can slide along medial surface, the lateral surface of vernier is parallel to the medial surface of reading measuring claw, the medial surface of vernier is vertical with measurement main body, on vernier, be carved with an index line perpendicular to lateral surface, when the index line of vernier points to 0 scale position of reading measuring claw, the medial surface of fixation measuring pawl equals the nominal width of tested shaped steel to the distance of the medial surface of vernier.
Between fixation measuring pawl and reading measuring claw, locating detent is set, locating detent is vertical with measurement main body.
As a kind of improvement, locating detent is two, and the lower surface of two locating detents in the same horizontal line, and the length of locating detent is less than the length of fixation measuring pawl.
As a kind of improvement, measure in main body handle is set, while being convenient to measure, grip and measure main body.
The plus tolerance that the reference mark maximal value of above-mentioned reading measuring claw is tested shaped steel, the minus tolerance that minimum value is tested shaped steel.
Reading measuring claw medial surface and angle 2.866 ° ≦ θ≤30 ° of measuring main body vertical direction.
Measuring principle: because the lateral surface of vernier is parallel to the medial surface of reading measuring claw, when vernier is during along reading measuring claw medial movement, the angle of moving direction and vertical direction is also θ, so, theoretically, when vernier is along reading measuring claw medial movement 1mm, displacement is that 1 * sin θ mm (is shown in Fig. 4 in the horizontal direction, because: a=c * sin θ), between two scale marks of reading measuring claw, distance is 1mm, and corresponding measuring accuracy (or reading variation) is sin θ mm.Suppose that tested shaped steel nominal width is L, standard of tolerance is ± x, when vernier caliper points to 0 scale position of reading measuring claw, between the medial surface of vernier and fixation measuring pawl, distance is set as L, mark minimum scale is-x, mark maximum scale is+x, reading measuring claw minimum mark scale and maximum mark scale actual range are set as 2 * x/sin θ, distance between minimum mark scale and maximum mark scale is set as 2 * x/sin θ equal portions, the actual range between adjacent scale is 1mm, and corresponding measuring accuracy (or adjacent scale reading changes) is sin θ.According to the needs of measuring accuracy, angle theta is less, and the measuring accuracy obtaining is higher.
The using method of this device: during measurement, hold handle for one, another hand slides into vernier the foot of reading measuring claw, makes its measured value reach maximum.Measurement mechanism of the present invention is stuck in tested shaped steel width or short transverse, makes locating detent contact tested shaped steel one end along the plane of height or Width.Adjust device of the present invention, make fixation measuring pawl inner side be close to one end, outside of tested shaped steel.Another hand moving cursor, makes vernier inner side be close to the other end (as Fig. 5) of tested shaped steel.The position of the index line indication on vernier, in the meter full scale of reading measuring claw, represents that tested shaped steel is qualified, the deviate that scale corresponding to index line on vernier is tested shaped steel, and the developed width of tested shaped steel is nominal width and deviate sum.As index line indication position exceeds meter full scale, represent that tested steel section size is defective.
The invention has the beneficial effects as follows:
(1) while having avoided existing vernier caliper measurement, due to the strict parallel measuring error causing of direction of measurement and tested shaped steel width or short transverse, improved measuring accuracy.
(2) can accomplish Quick Measurement and judge shaped steel width or height dimension whether qualified.
Accompanying drawing explanation
The shaped steel schematic diagram of the existing vernier caliper measurement regular shape of Fig. 1;
The existing vernier caliper measurement of Fig. 2 shaped steel schematic diagram in irregular shape;
Fig. 3 structural representation of the present invention;
Fig. 4 vernier schematic diagram of the present invention;
Fig. 5 is use constitutional diagram of the present invention.
1, handle 2, measurement main body 3, reading measuring claw 4, vernier 5, left locating detent 6, right locating detent 7, fixation measuring pawl
Embodiment
Below in conjunction with embodiment, the present invention will be further described, but be not limited to this.
[embodiment 1]
The width of irregular shaped steel or height tolerance measurement mechanism, comprise: measure main body 2 and vernier 4, downside one end of measuring main body 2 arranges fixation measuring pawl 7, the other end arranges reading measuring claw 3, the medial surface of fixation measuring pawl 7 is vertical with measurement main body 2, reading measuring claw 3 medial surfaces are θ with the angle of measuring main body 2 vertical direction, on reading measuring claw 3 medial surfaces, be carved with scale, the inner side of reading measuring claw 3 is provided with the vernier 4 that can slide along medial surface, the lateral surface of vernier 4 is parallel to the medial surface of reading measuring claw 3, the medial surface of vernier 4 is vertical with measurement main body 2, on vernier 4, be carved with an index line perpendicular to lateral surface, while being used for measuring, indicate the scale value of reading measuring claw.
When carrying out actual measurement, as long as the width of tested shaped steel does not make vernier 4 surpass maximum or the minimum scale of reading measuring claw 3, tested shaped steel is all qualified.
The handle 1 of the width of the irregular shaped steel of the present embodiment or height tolerance measurement mechanism is positioned at the upside of measuring main body 2, locating detent 5,6 is between reading measuring claw 3 and fixation measuring pawl 7, perpendicular to measuring main body 2, and be connected with measurement main body 2, the lower surface height of locating detent 5,6 is identical and in same level, the length of locating detent is less than the length of fixation measuring pawl.
The plane contact of the broad ways of lower surface separately and tested shaped steel when locating detent 5,6 lateral attitudes should guarantee to measure, and should not contact with the projection in plane.
The width of the irregular shaped steel of the present embodiment or height tolerance measurement mechanism are for measuring the shaped steel that nominal width is 200mm, and standard of tolerance is ± 1mm.Reading measuring claw 3 medial surfaces of the measurement mechanism of the present embodiment and angle theta=5.74 ° of measuring main body 2 vertical direction, when the index line of vernier 4 points to 0 scale position of reading measuring claw, the medial surface of fixation measuring pawl 7 equals 200mm to the distance of the medial surface of vernier 4, when vernier is along reading measuring claw medial movement 1mm, displacement is 1 * sin5.74 °=0.1mm in the horizontal direction.The minimum mark scale of reading measuring claw 3 is-1mm, maximum mark scale is+1mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 * 1/sin5.74 °=20mm, between the minimum of reading measuring claw 3 and maximum mark scale value, be divided into 2 * 1/sin5.74 °=20 equal portions, actual range between adjacent scale is 1mm, and measuring accuracy (or adjacent scale reading changes) is 1 * sin5.74 °=0.1mm.
In the present embodiment, fixation measuring pawl 7 medial surfaces are close to one end, outside of tested shaped steel, and then moving cursor 4, make vernier 4 inner sides be close to the other end of tested shaped steel, at this moment the index line of vernier 4 points to the 3rd scale mark position of forward of reading measuring claw 3, so this shaped steel is qualified.
The developed width of this shaped steel is 200+3 * 0.1=200.3(mm).
[embodiment 2]
With the difference of embodiment 1 being: measurement nominal width is 250mm, standard of tolerance is ± shaped steel of 2mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=11.54 °, the minimum mark scale of reading measuring claw 3 is-2mm, maximum mark scale is+2mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 * 2/sin11.54 °=20mm, between the maximum of reading measuring claw 3 and minimum mark scale value, be divided into 2 * 2/sin11.54 °=20 equal portions, actual range between adjacent scale is 1mm, and measuring accuracy (or adjacent scale reading changes) is 1 * sin11.54 °=0.2mm.When the index line of vernier 4 points to 0 scale position of reading measuring claw, the medial surface of fixation measuring pawl 7 equals 250mm to the distance of the medial surface of vernier 4.
In the present embodiment, fixation measuring pawl 7 medial surfaces are close to one end, outside of tested shaped steel, and then moving cursor 4, make vernier 4 inner sides be close to the other end of tested shaped steel, at this moment the index line of vernier 4 points to the 6th scale mark position of negative sense of reading measuring claw 3, so this shaped steel is qualified.
The developed width of this shaped steel is 250-6 * 0.2=248.8(mm).
[embodiment 3]
With the difference of embodiment 1 being: measuring height is 250mm, standard of tolerance is ± shaped steel of 3mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=11.54 °, the minimum mark scale of reading measuring claw 3 is-3mm, maximum mark scale is+3mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 * 3/sin11.54 °=30mm, between the maximum of reading measuring claw 3 and minimum mark scale value, be divided into 2 * 3/sin11.54 °=30 equal portions, actual range between adjacent scale is 1mm, and measuring accuracy (or adjacent scale reading changes) is 1 * sin11.54 °=0.2mm.
In the present embodiment, fixation measuring pawl 7 medial surfaces are close to one end, outside of tested shaped steel, and then moving cursor 4, make vernier 4 inner sides be close to the other end of tested shaped steel, at this moment the index line of vernier 4 points to the 4th scale mark position of forward of reading measuring claw 3, so this shaped steel is qualified.
The true altitude of this shaped steel is 250+4 * 0.2=250.8(mm).
[embodiment 4]
With the difference of embodiment 1 being: measuring height is 200mm, standard of tolerance is ± shaped steel of 1mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=2.866 °, the minimum mark scale of reading measuring claw 3 is-1mm, maximum mark scale is+1mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 * 1/sin2.866 °=40mm, between the maximum of reading measuring claw 3 and minimum mark scale value, be divided into 2 * 1/sin2.866 °=40 equal portions, actual range between adjacent scale is 1mm, and measuring accuracy (or adjacent scale reading changes) is 1 * sin2.866 °=0.05mm.
In the present embodiment, fixation measuring pawl 7 medial surfaces are close to one end, outside of tested shaped steel, and then moving cursor 4, make vernier 4 inner sides be close to the other end of tested shaped steel, at this moment the index line of vernier 4 points to the 3rd scale mark position of forward of reading measuring claw 3, so this shaped steel is qualified.
The true altitude of this shaped steel is 200+3 * 0.05=200.15(mm).
[embodiment 5]
With the difference of embodiment 1 being: measuring height is 200mm, standard of tolerance is ± shaped steel of 5mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=30 °, the minimum mark scale of reading measuring claw 3 is-5mm, maximum mark scale is+5mm, reading measuring claw minimum mark scale and maximum mark scale actual range are 2 * 5/sin30 °=20mm, between the maximum of reading measuring claw 3 and minimum mark scale value, be divided into 2 * 5/sin30 °=20 equal portions, actual range between adjacent scale is 1mm, and measuring accuracy (or adjacent scale reading changes) is 1 * sin30 °=0.5mm.
In the present embodiment, fixation measuring pawl 7 medial surfaces are close to one end, outside of tested shaped steel, and then moving cursor 4, make vernier 4 inner sides be close to the other end of tested shaped steel, at this moment the index line of vernier 4 points to the 5th scale mark position of forward of reading measuring claw 3, so this shaped steel is qualified.
The true altitude of this shaped steel is 200+5 * 0.5=202.5(mm).
[embodiment 6]
With the difference of embodiment 1 be: the shaped steel that measuring height is 200mm, standard of tolerance is ± 1mm; The medial surface of reading measuring claw 3 and the angle of vertical direction are θ=5.74 °, and the maximum of reading measuring claw 3 and minimum mark scale are ± 1mmm to equal standard allowable tolerance.Reading measuring claw minimum mark scale and maximum mark scale actual range are to be divided into 20 equal portions between the maximum of 2 * 1/sin5.74 °=20mm reading measuring claw 3 and minimum mark scale value, and the numerical value between adjacent two scales is 1 * sin5.74 °=0.1mm.
In the present embodiment, fixation measuring pawl 7 medial surfaces are close to one end, outside of tested shaped steel, and then moving cursor 4, make vernier 4 inner sides be close to the other end of tested shaped steel, at this moment the index line of vernier 4 sensing position is positioned at outside reading measuring claw meter full scale, so this shaped steel is defective.
Above the width of irregular shaped steel or height tolerance measurement mechanism select wear-resisting, hardness is large, the on-deformable tool steel of high temperature is made.
Claims (8)
1. the width of an irregular shaped steel or height tolerance measurement mechanism comprise: measure main body (2) and vernier (4), downside one end of measuring main body (2) arranges fixation measuring pawl (7), the other end arranges reading measuring claw (3), the medial surface of fixation measuring pawl (7) is vertical with measurement main body (2), reading measuring claw (3) medial surface is θ with the angle of measuring main body (2) vertical direction, on reading measuring claw (3) medial surface, be carved with scale, the inner side of reading measuring claw (3) is provided with the vernier (4) that can slide along medial surface, the lateral surface of vernier (4) is parallel to the medial surface of reading measuring claw (3), the medial surface of vernier (4) is vertical with measurement main body (2), on vernier (4), be carved with an index line perpendicular to lateral surface, when the index line of vernier (4) points to 0 scale position of reading measuring claw (3), the medial surface of fixation measuring pawl (7) equals nominal width or the height of tested shaped steel to the distance of the medial surface of vernier (4).
2. the width of irregular shaped steel according to claim 1 or height tolerance measurement mechanism, is characterized in that: the plus tolerance that the reference mark maximal value of reading measuring claw is tested shaped steel, the minus tolerance that reference mark minimum value is tested shaped steel.
3. the width of irregular shaped steel according to claim 1 or height tolerance measurement mechanism, it is characterized in that: between fixation measuring pawl (7) and reading measuring claw (3), locating detent (5 is set, 6), locating detent (5,6) is vertical with measurement main body (2).
4. the width of irregular shaped steel according to claim 3 or height tolerance measurement mechanism, it is characterized in that: locating detent (5,6) is two, and the lower surface of two locating detents (5,6) in the same horizontal line.
5. the width of irregular shaped steel according to claim 4 or height tolerance measurement mechanism, is characterized in that: the length of locating detent (5,6) is less than the length of fixation measuring pawl (7).
6. the width of irregular shaped steel according to claim 1 or height tolerance measurement mechanism, is characterized in that: measure in main body (2) handle (1) is set.
7. according to the width of the irregular shaped steel described in any one in claim 1 to 6 or height tolerance measurement mechanism, it is characterized in that: reading measuring claw (3) medial surface and 2.866 °≤θ≤30 ° of angle of measuring main body (2) vertical direction.
8. according to the width of the irregular shaped steel described in any one in claim 1 to 7 or height tolerance measurement mechanism, it is characterized in that: the width of irregular shaped steel or height tolerance measurement mechanism are made by tool steel.
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| CN201310456175.9A CN103542789B (en) | 2013-09-29 | 2013-09-29 | A kind of width of irregular shaped steel or height tolerance measurement mechanism |
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| CN201310456175.9A CN103542789B (en) | 2013-09-29 | 2013-09-29 | A kind of width of irregular shaped steel or height tolerance measurement mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123740A (en) * | 2016-08-26 | 2016-11-16 | 山东钢铁股份有限公司 | A kind of forklift door frame channel-section steel certain height inner width survey tool and measuring method thereof |
| CN112781465A (en) * | 2021-02-02 | 2021-05-11 | 中国十七冶集团有限公司 | Portable beam width and beam height measuring tool and using method |
| CN113776406A (en) * | 2021-09-10 | 2021-12-10 | 东风汽车底盘系统有限公司 | A numerical rim width and rim height combined inspection tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106123740A (en) * | 2016-08-26 | 2016-11-16 | 山东钢铁股份有限公司 | A kind of forklift door frame channel-section steel certain height inner width survey tool and measuring method thereof |
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| CN112781465A (en) * | 2021-02-02 | 2021-05-11 | 中国十七冶集团有限公司 | Portable beam width and beam height measuring tool and using method |
| CN112781465B (en) * | 2021-02-02 | 2022-07-26 | 中国十七冶集团有限公司 | Portable beam width and beam height measuring tool and using method |
| CN113776406A (en) * | 2021-09-10 | 2021-12-10 | 东风汽车底盘系统有限公司 | A numerical rim width and rim height combined inspection tool |
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|---|---|
| CN103542789B (en) | 2015-12-30 |
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