CN103697797B - A kind of cubing of precision measurement for depth of blind hole in micro dimension - Google Patents
A kind of cubing of precision measurement for depth of blind hole in micro dimension Download PDFInfo
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- CN103697797B CN103697797B CN201310751782.8A CN201310751782A CN103697797B CN 103697797 B CN103697797 B CN 103697797B CN 201310751782 A CN201310751782 A CN 201310751782A CN 103697797 B CN103697797 B CN 103697797B
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- dial gauge
- thread bush
- test pin
- protection set
- locating piece
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Abstract
The invention discloses the cubing of a kind of precision measurement for depth of blind hole in micro dimension, including: dial gauge, locating piece, protection set, test pin, thread bush and measurement contact are sleeve below dial gauge and measure bar；Described locating piece central authorities have dial gauge installing hole, and locating piece side is provided with the screwed hole communicated with dial gauge installing hole, are provided with fastening dial gauge screw in screwed hole；Described protection set is fixed on below described locating piece, and on axle center and the locating piece of protection set, the axle center of dial gauge installing hole is on same straight line, and the inwall of protection set lower end is provided with female thread, and described thread bush is fixed in protection set；Sleeve below described dial gauge and measurement bar through dial gauge installing hole and stretch in protection set；Described test pin is located in protection set, and described measurement contact is fixed on test pin bottom.By the way, present configuration is simple, and low cost of manufacture, it is adaptable to the measurement of the hole depth of different pore size, the certainty of measurement of hole depth reaches 10‑ 3mm。
Description
Technical field
The present invention relates to cubing manufacturing technology field, particularly relate to the cubing of a kind of precision measurement for depth of blind hole in micro dimension.
Background technology
When blind hole depth franchise is in micron dimension, and when its degree of depth is relatively for certain datum level, this depth survey is always the difficult point in current accurate measurement.
Summary of the invention
The technical problem that present invention mainly solves is to provide the cubing of a kind of precision measurement for depth of blind hole in micro dimension, and the certainty of measurement of hole depth reaches 10-3Mm, i.e. micron level；Cubing adapts to different pore size, the measurement of the part that the degree of depth changes in certain limit；Detection tool structure is simple, low cost of manufacture, and durable.
For solving above-mentioned technical problem; the technical scheme that the present invention uses is: provide the cubing of a kind of precision measurement for depth of blind hole in micro dimension; including: dial gauge, locating piece, protection set, test pin, thread bush and measurement contact are sleeve below dial gauge and measure bar；Described locating piece central authorities have dial gauge installing hole, and locating piece side is provided with the screwed hole communicated with dial gauge installing hole, are provided with fastening dial gauge screw in screwed hole；Described protection set is fixed on below described locating piece, and on axle center and the locating piece of protection set, the axle center of dial gauge installing hole is on same straight line, and the inwall of protection set lower end is provided with female thread, and described thread bush is fixed in protection set；Sleeve below described dial gauge and measurement bar through dial gauge installing hole and stretch in protection set, and dial gauge is fixed with locating piece by fastening dial gauge screw；Described test pin is located in protection set, and is cased with spring between test pin and thread bush top, and test pin top contacts with the measurement bar of dial gauge, and described measurement contact is fixed on test pin bottom.
Preferably, described protection set upper side is welded with adpting flange, and protection set is fixed on below described locating piece by adpting flange, and described thread bush is fixed on the female thread of protection set.
Preferably, described test pin top is provided with fixed block, and fixed block contacts with the measurement bar of dial gauge, and described test pin is located in described protection set, and test pin is through described thread bush and beyond thread bush lower end, test pin and thread bush matched in clearance；Spring retainer on described test pin is between the fixed block and thread bush top of test pin, and on test pin, the rigidity of spring measures the spring rate on bar more than dial gauge.
Preferably, the cylindrical of described thread bush is screw thread, and thread bush endoporus lower end diameter is less than endoporus upper end diameter, and described test pin coordinates with the endoporus epimere wide arc gap of thread bush；The cylindrical of thread bush lower end is symmetrily processed with plane；Described protection puts the position of corresponding thread bush and is provided with holding screw.
Preferably, described locating piece uses Cr12 alloy tool steel making, and after processing, quenching adds lonneal process；Described protection set uses stainless steel tube manufacture；Described test pin Cr12 steel making, quenching adds lonneal and processes；Described thread bush uses rustless steel manufacture；Described measurement contact is Alundum.
Preferably, a diameter of 8mm of dial gauge installing hole on described locating piece；Described protection set internal diameter 10mm, wall thickness 2mm, protect the length few 20mm of hole depth than measurement part, the female thread M12 of protection set, length 30mm；Described test pin diameter 6mm, test pin passes the endoporus of thread bush and exceedes thread bush lower end 15mm；Described thread bush Excircle machining becomes M12 screw thread, a length of 35mm of thread bush, and endoporus lower end diameter is 6mm, and endoporus upper end diameter is 7mm.
The invention has the beneficial effects as follows: present configuration is simple, low cost of manufacture, it is adaptable to the measurement of the certain limit hole depth of different pore size.
Accompanying drawing explanation
Fig. 1 is the structural representation of the cubing of a kind of precision measurement for depth of blind hole in micro dimension of the present invention；
In accompanying drawing, the labelling of each parts is as follows: 1, dial gauge；2, fastening dial gauge screw；3, locating piece；4, protection set；5, test pin；6, holding screw；7, thread bush；8, contact is measured；9, detected part.
Detailed description of the invention
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clear and definite defining.
Referring to Fig. 1, the embodiment of the present invention includes:
A kind of cubing of precision measurement for depth of blind hole in micro dimension, including: dial gauge 1, locating piece 3, protection set 4, test pin 5, thread bush 7 and measurement contact 8 are sleeve below dial gauge 1 and measure bar, easily the certainty of measurement in hole can be brought up to 10-3mm；Protection set 4 can protect test pin 5 and dial gauge 1 from collision deformation；Described locating piece 3 uses Cr12 alloy tool steel making, and after processing, quenching adds lonneal process, by using the locating piece 3 of different length, can measure the degree of depth of different detected part 9 diametric hole；Described locating piece 3 central authorities have dial gauge installing hole, a diameter of 8mm of dial gauge installing hole, and locating piece 3 side is provided with the screwed hole communicated with dial gauge installing hole, are provided with fastening dial gauge screw 2 in screwed hole；Described protection set 4 upper ends are welded with adpting flange; protection set 4 is fixed on below described locating piece 3 by adpting flange; and protect the axle center overlapping 4 and the axle center of dial gauge installing hole on locating piece 3 on same straight line; the inwall of protection set 4 lower ends is provided with female thread; described thread bush 7 is fixed on the female thread of protection set 4; protection set 4 employing stainless steel tube manufacture; protection set 4 internal diameter 10mm; wall thickness 2mm; protection set 4 length are than the few 20mm of hole depth of detected part 9; the female thread M12 of protection set 4, length 30mm；Sleeve below described dial gauge 1 and measurement bar through dial gauge installing hole and stretch in protection set 4, and dial gauge 1 is fixed by fastening dial gauge screw 2 and locating piece 3；Described test pin 5 is located in protection set 4; and it is cased with spring between test pin 5 and thread bush 7 top; test pin 5 Cr12 steel making; quenching adds lonneal and processes; test pin 5 diameter 6mm, test pin 5 passes the endoporus of thread bush 7 and exceedes thread bush 7 lower end 15mm, is adapted to the measurement in different depth hole by the length adjusting test pin 5; the hole depth making detection instrument measure can change within the specific limits, and protects structure and the size constancy of set 4；Described thread bush 7 uses rustless steel manufacture, thread bush 7 Excircle machining becomes M12 screw thread, the a length of 35mm of thread bush 7, endoporus lower end diameter is 6mm, and endoporus upper end diameter is 7mm, and test pin 5 top contacts with the measurement bar of dial gauge 1, and have certain contact force, described measurement contact 8 is fixed on test pin 5 bottom, and measuring contact 8 is Alundum, durable.
Described test pin 5 top is provided with fixed block, and fixed block contacts with the measurement bar of dial gauge 1, and described test pin 5 is through described thread bush 7 and beyond thread bush 7 lower end, test pin 5 and thread bush 7 matched in clearance；Spring retainer on described test pin 5 is between the fixed block and thread bush 7 top of test pin 5, and on test pin 5, the rigidity of spring measures the spring rate on bar more than dial gauge 1, and when making the measurement bar somewhat stress of dial gauge 1 produce displacement, dial gauge 1 first responds；The cylindrical of described thread bush 7 is screw thread, and thread bush 7 endoporus lower end diameter is less than endoporus upper end diameter, and described test pin 5 coordinates with the endoporus epimere wide arc gap of thread bush 7, reduces the frictional force that test pin moves up and down；The cylindrical of thread bush 7 lower end is symmetrily processed with plane, facilitates thread bush 7 to screw in protection set 4；On described protection set 4, the position of corresponding thread bush 7 is provided with holding screw 6, for fixing the position of thread bush 7.
In conjunction with the structure shown in Fig. 1, the work process of the cubing of the measured hole degree of depth is described:
One, protection is installed to be set on locating piece
1. thread bush 7 precession protection is overlapped in 4, and lock with holding screw 6；
2. spring is penetrated test pin 5 from the small end of test pin 5, and test pin 5 is inserted into the hole of thread bush 7 from the upper end hole of protection set 4, make test pin 5 lower end at least expose 10mm；
3. measurement contact 10 is connected on test pin 5.
4. protection set 4 is fixed on locating piece 3 with trip bolt.
Two, dial gauge is installed and demarcates detection length
1. the sleeve of dial gauge 1 is inserted in the hole of locating piece 3, and pressure dial gauge 1 down, make 1 time contact of dial gauge to the upper end of test pin 5, and allow big indicators turn about the 1mm of dial gauge 1, then fix dial gauge 1 with fastening dial gauge screw 2；
2. demarcate starting altitude with gauge block, i.e. the length measured between contact 8 on test pin 2 is played on 3 times edges of calibrating and positioning block, and the length of demarcation is slightly larger than the degree of depth in the hole of detected part 9, and makes dial gauge 1 pointer be transferred to zero-bit.If length is less than normal, need to readjust the screw-in depth of thread bush 7, make the installation site of dial gauge move down.
Three, the degree of depth of part is measured
Write down the height of demarcation, then by the degree of depth in cubing detection hole, make the lower edge of locating piece 3 and depth datum (top, the hole) lapping-in in the hole of detected part 9, observe the change of dial gauge 1 pointer, its variable quantity is i.e. the difference in height of hole depth and demarcation, by calculating the depth value that i.e. can get hole, traverse measurement contact can measure the degree of depth of bottom surface, hole diverse location within the specific limits.
Beneficial effects of the present invention has: by changing test pin 5 and the locating piece 3 of different length of different length, cubing adapts to the measurement of the degree of depth in the hole of different pore size；Protection set 4 simple in construction, one end of spring supports by thread bush end face, and one end supports by the fixed block lower end on test pin, is not required to arrange step in the inner side of protection set 4, makes protection overlap 4 handling eases；The sleeve of dial gauge 1 and the protection of the measurement protected set of bar 4, be difficult to damaged during detection；Stainless steel tube manufacture used by protection set 4, the most corrosion-resistant, and low cost of manufacture；Cubing overall structure is simple, low cost of manufacture；Certainty of measurement reaches 10-3Mm, i.e. micron order；Change dial gauge into amesdial, certainty of measurement can be improved an order of magnitude, reach 10-1μm。
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (3)
1. the cubing of a precision measurement for depth of blind hole in micro dimension, it is characterised in that including: dial gauge, locating piece, protection set, test pin, thread bush and measurement contact is sleeve below dial gauge and measures bar；Described locating piece central authorities have dial gauge installing hole, and locating piece side is provided with the screwed hole communicated with dial gauge installing hole, are provided with fastening dial gauge screw in screwed hole；Described protection set is fixed on below described locating piece, and on axle center and the locating piece of protection set, the axle center of dial gauge installing hole is on same straight line, and the inwall of protection set lower end is provided with female thread, and described thread bush is fixed in protection set；Sleeve below described dial gauge and measurement bar through dial gauge installing hole and stretch in protection set, and dial gauge is fixed with locating piece by fastening dial gauge screw；Described test pin is located in protection set, and is cased with spring between test pin and thread bush top, and test pin top contacts with the measurement bar of dial gauge, and described measurement contact is fixed on test pin bottom；Described protection set upper side is welded with adpting flange, and protection set is fixed on below described locating piece by adpting flange, and described thread bush is fixed on the female thread of protection set；Described test pin top is provided with fixed block, and fixed block contacts with the measurement bar of dial gauge, and described test pin is located in described protection set, and test pin is through described thread bush and beyond thread bush lower end, test pin and thread bush matched in clearance；Spring retainer on described test pin is between the fixed block and thread bush top of test pin, and on test pin, the rigidity of spring measures the spring rate on bar more than dial gauge；The cylindrical of described thread bush is screw thread, and thread bush endoporus lower end diameter is less than endoporus upper end diameter, and described test pin coordinates with the endoporus epimere wide arc gap of thread bush；The cylindrical of thread bush lower end is symmetrily processed with plane；Described protection puts the position of corresponding thread bush and is provided with holding screw.
The cubing of a kind of precision measurement for depth of blind hole in micro dimension the most according to claim 1, it is characterised in that: described locating piece uses Cr12 alloy tool steel making, and after processing, quenching adds lonneal process；Described protection set uses stainless steel tube manufacture；Described test pin Cr12 steel making, quenching adds lonneal and processes；Described thread bush uses rustless steel manufacture；Described measurement contact is Alundum.
The cubing of a kind of precision measurement for depth of blind hole in micro dimension the most according to claim 1, it is characterised in that: a diameter of 8mm of dial gauge installing hole on described locating piece；Described protection set internal diameter 10mm, wall thickness 2mm, protect the length few 20mm of hole depth than measurement part, the female thread M12 of protection set, length 30mm；Described test pin diameter 6mm, test pin passes the endoporus of thread bush and exceedes thread bush lower end 15mm；Described thread bush Excircle machining becomes M12 screw thread, a length of 35mm of thread bush, and endoporus lower end diameter is 6mm, and endoporus upper end diameter is 7mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310751782.8A CN103697797B (en) | 2013-12-31 | 2013-12-31 | A kind of cubing of precision measurement for depth of blind hole in micro dimension |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310751782.8A CN103697797B (en) | 2013-12-31 | 2013-12-31 | A kind of cubing of precision measurement for depth of blind hole in micro dimension |
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| Publication Number | Publication Date |
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| CN103697797A CN103697797A (en) | 2014-04-02 |
| CN103697797B true CN103697797B (en) | 2016-12-07 |
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| CN105135990A (en) * | 2015-05-22 | 2015-12-09 | 中国商用飞机有限责任公司 | Special-purpose measuring tool used for measuring airplane horizontal tail part abrasion scratch depth |
| CN105352411A (en) * | 2015-10-20 | 2016-02-24 | 芜湖恒隆汽车转向***有限公司 | Measurement method for depth measurement device for sealed groove |
| CN106468532B (en) * | 2016-10-11 | 2019-02-15 | 浙江超威创元实业有限公司 | A kind of aluminum plastic film scour hole depth measuring device and its measurement method |
| CN106767638A (en) * | 2016-12-16 | 2017-05-31 | 智德电机（苏州）有限公司 | A kind of electric motor end cap tool for detecting height |
| CN107942932B (en) * | 2017-11-23 | 2020-04-03 | 中国航发沈阳黎明航空发动机有限责任公司 | Quick-change probe type measuring head for machine tool meter printing and measuring method |
| CN107966090B (en) * | 2017-11-23 | 2020-05-29 | 中国航发沈阳黎明航空发动机有限责任公司 | Quick-replaceable probe type measuring device for detecting depths of narrow groove and fine blind hole |
| CN107727044A (en) * | 2017-11-25 | 2018-02-23 | 山西江淮重工有限责任公司 | Ultra-deep blind hole depth measurement apparatus |
| CN107817014A (en) * | 2017-12-09 | 2018-03-20 | 无锡特恒科技有限公司 | Universal gauge head component |
| CN109931852B (en) * | 2019-02-28 | 2021-05-11 | 武汉船用机械有限责任公司 | Blind hole depth auxiliary measuring tool and blind hole depth measuring device |
| CN112945161B (en) * | 2019-12-11 | 2022-08-23 | 中国航发商用航空发动机有限责任公司 | Detection apparatus for dark chamber hole part installation quality |
| CN111992779A (en) * | 2020-08-25 | 2020-11-27 | 杭州彩兔贸易有限公司 | Aerospace aviation mould precision detection equipment that punches |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3093909A (en) * | 1960-06-09 | 1963-06-18 | Eisele Andrew | Precision bore gauge |
| JP3307584B2 (en) * | 1998-03-16 | 2002-07-24 | 株式会社ミツトヨ | Inside measuring instrument |
| CN102252581A (en) * | 2010-05-18 | 2011-11-23 | 王乃武 | Shaft key groove depth detection tool |
| CN202092574U (en) * | 2011-05-26 | 2011-12-28 | 浙江吉利汽车研究院有限公司 | Shaft piece key groove checking fixture |
| CN203100654U (en) * | 2012-12-26 | 2013-07-31 | 重庆歇马机械曲轴有限公司 | Testing fixture for center holes |
| CN203744898U (en) * | 2013-12-31 | 2014-07-30 | 苏州市职业大学 | Micron measurement-level gauge for precisely measuring depth of blind holes |
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