CN109931900A - A kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement device - Google Patents
A kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement device Download PDFInfo
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- CN109931900A CN109931900A CN201910278832.2A CN201910278832A CN109931900A CN 109931900 A CN109931900 A CN 109931900A CN 201910278832 A CN201910278832 A CN 201910278832A CN 109931900 A CN109931900 A CN 109931900A
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Abstract
The invention discloses a kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement devices.Workpiece measuring device includes: first baffle, second baffle, scalable probe and range sensor.First baffle and second baffle are oppositely arranged, and scalable probe is arranged on first baffle, and head is towards second baffle, and telescopic direction is perpendicular to first baffle.Scalable probe no less than two, scalable probe is unequal at a distance from first baffle bottom, while each scalable probe is correspondingly arranged on a range sensor.It being capable of diameter at the axially different position of rapid survey ultralow temperature shrinkage workpiece using measuring device of the invention.
Description
Technical field
The present invention relates to fields of measurement, more particularly to a kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement device.
Background technique
Shrinkage assembly is to make the mistake between internal member and external member using the metal characteristic that dimension linearity is shunk at low temperature
Cooperation of being full of is converted into clearance fit when assembling process is implemented, completion to be assembled and after restoring room temperature, and internal member is by tightly solid
It is scheduled in external member, to make to assemble a kind of mounting technology for being again converted to interference fit therebetween.In the shrinkage of bushing
In assembling process, the bushing after subzero treatment can generate non-uniform dimensional contraction amount, and excessive or too small shrinkage can shadow
Ring subsequent assembly work.
Currently used outside diameter measurement method is with vernier caliper, micrometer, Optical length measurement instrument, laser interferometer etc.
Contact and non-contact measurement.Wherein, this conventional contact measurement method of vernier caliper, micrometer although practical letter
It is single, but due to the fast quick-recovery of size of the workpiece under room temperature environment after shrinkage, one-shot measurement can only survey a position diameter, no
Different location diameter can be measured simultaneously；And the non-contact measurement methods such as Optical length measurement instrument, laser interferometer, because of workpiece table after shrinkage
The frost in face and indeterminacy.
Summary of the invention
The object of the present invention is to provide a kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement devices, can be when extremely short
In (≤5s, far below the time 120s or so that rises again of workpiece) quickly measure it is outer at the axially different position of workpiece after shrinkage
Diameter, and the frosting of workpiece surface is avoided to interfere.
To achieve the above object, the present invention provides following schemes:
A kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement device, the measuring device includes first baffle, second
Baffle, range sensor and at least two scalable probes；Wherein,
The first baffle and the second baffle are oppositely arranged；
The scalable probe is arranged on the first baffle, and the head of the scalable probe is towards the second gear
Plate, the telescopic direction of the scalable probe is perpendicular to the first baffle；
Each scalable probe is unequal at a distance from the first baffle bottom；
Each scalable probe is correspondingly arranged on the range sensor.
Optionally, transport mechanism, ultralow temperature shrinkage workpiece to be measured are equipped between the first baffle and the second baffle
It is placed in the transport mechanism, transport mechanism movement drives workpiece for measurement quickly through the first baffle and described the
Gap between two baffles.
Optionally, the measuring device further includes feed arrangement, the supply side of the feed arrangement and the first baffle
Or the second baffle connection, for adjusting the spacing between the first baffle and the second baffle.
Optionally, the horizontal space between the adjacent scalable probe is equal, between the adjacent scalable probe
Vertical spacing is equal.
Optionally, the second baffle is equipped with the rigid probe equal with the scalable probe quantity, each described
Scalable probe described in rigid probe face one.
Optionally, the measuring device further includes sleeve and spring；Wherein,
The sleeve includes the first cavity, the second cavity and third cavity, first cavity and third cavity position
In the both ends of the sleeve, first cavity is connected to the third cavity by second cavity；
The spring is set in first cavity, the scalable probe across the spring and second cavity,
And the tail portion of the scalable probe extends in the third cavity, the head of the scalable probe extends described first
Cavity；The scalable probe tip is equipped with baffle, and the baffle is contacted with the spring, makes the spring in compressive state；
The range sensor is located at the third cavity other end, the range sensor and the scalable probe
Between there are certain distances.
Optionally, the sleeve is put together by two valve half circular sleeves of symmetrical configuration.
Optionally, the scalable probe is that contact hemispherical is popped one's head in.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
The present invention makes ultra-low temperature cold to be measured by setting first baffle, second baffle, scalable probe and range sensor
But when workpiece is quickly through gap between first baffle and second baffle, it can all measure that range sensor is corresponding to be stretched
The distance between contracting probe, then calculates the amount of movement of scalable probe, adds first baffle and second gear by amount of movement
Initial distance between plate can measure the outer diameter of workpiece different location.It, can be quick using measuring device provided by the invention
Dimensional contraction amount of the ultralow temperature shrinkage workpiece spindle to multiple positions is measured, is selection and the shrinkage dress of ultralow temperature shrinkage workpiece material
Real data is provided with technology establishment to support.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of workpiece external diameter measuring device perspective view provided by the invention；
Fig. 2 is the internal structure chart of middle sleeve of the present invention；
Fig. 3 is a kind of workpiece external diameter measuring device right sectional view provided by the invention；
Fig. 4 is workpiece external diameter measuring parameter schematic diagram to be measured.
Wherein, 1- first baffle, 2- second baffle, the scalable probe of 3-, 4- range sensor, 5- feed arrangement, 6- are rigid
Property probe, 7- sleeve, 8- spring, the first cavity of 9-, the second cavity of 10-, 11- third cavity, 12- baffle, 13- bearing, 14-
Thick stick, 15- nut.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement devices, can measure simultaneously
Outer diameter after ultralow temperature shrinkage at workpiece axial direction different location.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment 1:
Fig. 1 is a kind of ultralow temperature shrinkage workpiece outer diameter multiple spot fast unit perspective view provided by the invention, as shown in Figure 1,
The present apparatus includes first baffle 1, second baffle 2, scalable probe 3, range sensor 4, feed arrangement 5 and rigid probe 6.
Fig. 2 is the internal structure chart of middle sleeve of the present invention, as shown in Fig. 2, the present apparatus further includes sleeve 7 and spring 8.Wherein
Sleeve 7 is put together by two valve half circular sleeves of symmetrical configuration, is fixed on first baffle 1.Sleeve 7 include the first cavity 9,
Second cavity 10 and third cavity 11.Spring 8 is set in the first cavity 9.Scalable probe 3 passes through spring 8 and the second cavity 10,
Tail portion extends in third cavity 11, and the first cavity 9 is extended on head；3 tops of scalable probe be equipped with baffle 12, baffle 12 with
Spring 8 contacts, and makes spring 8 in compressive state；Range sensor 4 is located at the other end of third cavity 11, range sensor 4 with can
There are certain distances between flexible probe 3.
Wherein, the supply side of feed arrangement 5 is connect with first baffle 1 or second baffle 2, between two baffles of adjusting
Away from.In the present embodiment, the supply side of feed arrangement 5 is connect with second baffle 2.Fig. 3 is a kind of workpiece outer diameter provided by the invention
Measuring device right sectional view, as shown in figure 3, feed arrangement 5 includes bearing 13, lead screw 14 and nut 15.Only one end has lead screw 14
Screw thread, the other end are polished rod.Polished rod one end is connect with bearing 13, cooperation transmission during second baffle 2 is fed.It is threaded
One end is connect with nut 15, and nut 15 is fixed on 2 bottom surface of second baffle, and the radial direction of second baffle 2 can be realized in rotating threaded shaft 14
It is mobile.
In the actual operation process, mobile platform can be set in 2 bottom of second baffle, mobile platform and feed arrangement 5 connect
It connects, the bottom of mobile platform is arranged in nut 15.Mobile platform is set and improves stabilization of the second baffle 2 during feeding
Property.
Wherein, rigid probe 6 and 3 faces of scalable probe are set on second baffle 2, non-telescoping.
Wherein, scalable probe 3 is provided with 3 groups, and the horizontal space between adjacent scalable probe 3 is equal, vertical spacing
It is equal.
Wherein, scalable probe 3 is popped one's head in for contact hemispherical.
Specific implementation step using present apparatus measurement ultralow temperature shrinkage workpiece outer diameter is as follows:
Second baffle 2 is adjusted to appropriate location using feed arrangement 5 according to workpiece for measurement size, is slightly less than with diameter not cold
But between ring gauge (difference be about diameter of work 1~2%) zeroing of workpiece determines between scalable probe 3 and rigid probe 6
Away from vertical to place ring gauge and it is pushed to pass sequentially through scalable probe 3, scalable probe 3 and rigid probe 6 are answered with ring gauge at this time
When the spacing between contact but no pressure, two probes is recorded as relative zero, and numerically equal to ring gauge diameter d0.Three groups can stretch
Successively zeroing record initial distance is denoted as L to contracting probe 31。
Ring gauge is removed, workpiece for measurement is taken out from ultralow temperature cooler environment in 5s and is placed on 1 He of first baffle vertically
Between second baffle 2, and quickly through three groups of scalable probes 3 and rigid probes 6, to set after 3 contact workpieces of scalable probe
7 contracts of cylinder generate certain displacement, continue thereafter with travelling workpiece by the scalable probe 3 of second and third group, successively remember
Record the distance value of each range sensor 4 output, i.e. the distance between range sensor 4 and scalable probe 3；
Remove workpiece for measurement, and be cooled to set temperature again, then in 5s by workpiece for measurement from ultralow temperature cooling ring
It takes out in border, and after being turned 120 degree, is placed between first baffle 1 and second baffle 2 vertically, while fast moving work
Part makes it through, the distance value that successively recording distance sensor 4 exports；Workpiece for measurement is removed again and is cooled to setting temperature again
Degree is placed between first baffle 1 and second baffle 2, fastly vertically after it is rotated 120 degree by same direction of rotation again
Fast travelling workpiece makes it through, the distance value that successively recording distance sensor 4 exports.Compare each range sensor 4 exports 3
A distance value, is averaged and upper lower deviation is respectively L2, Δ La and Δ Lb.
Fig. 4 is workpiece external diameter measuring parameter schematic diagram to be measured, as shown in figure 4, subtracting L2 by L1 can be obtained and can stretch
The contraction displacement of contracting probe 3, can be calculated the workpiece outer diameter comprising upper lower deviation in conjunction with ring gauge diameter d0
It can measure the same axially different height of ultralow temperature cooling down workpiece to be measured in conjunction with three groups of 3 data measureds of scalable probe
First outer diameter value.
Embodiment 2:
Unlike above-described embodiment 1, transport mechanism is additionally provided between first baffle 1 and second baffle 2, workpiece is put
Being placed in transport mechanism can be by the gap between first baffle 1 and second baffle 2.Manually workpiece is not pushed to pass through, kept away
Manual operation bring error is exempted from.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement device, which is characterized in that the measuring device includes first
Baffle, second baffle, range sensor and at least two scalable probes；Wherein,
The first baffle and the second baffle are oppositely arranged；
The scalable probe is arranged on the first baffle, the head of the scalable probe towards the second baffle,
The telescopic direction of the scalable probe is perpendicular to the first baffle；
Each scalable probe is unequal at a distance from the first baffle bottom；
Each scalable probe is correspondingly arranged on the range sensor.
2. a kind of workpiece external diameter measuring device according to claim 1, which is characterized in that the first baffle and described
Transport mechanism is equipped between two baffles, workpiece for measurement is placed in the transport mechanism, and the transport mechanism movement drives to be measured
Workpiece passes through the gap between the first baffle and the second baffle.
3. a kind of workpiece external diameter measuring device according to claim 1, which is characterized in that the measuring device further include into
To device, the supply side of the feed arrangement is connect with the first baffle or the second baffle, for adjusting described first
Spacing between baffle and the second baffle.
4. a kind of workpiece external diameter measuring device according to claim 1, which is characterized in that the adjacent scalable probe
Between horizontal space it is equal, the vertical spacing between the adjacent scalable probe is equal.
5. a kind of workpiece external diameter measuring device according to claim 1, which is characterized in that the second baffle be equipped with
The scalable equal rigid probe of quantity of popping one's head in, scalable probe described in each rigid probe face one.
6. a kind of workpiece external diameter measuring device according to claim 1, which is characterized in that the measuring device further includes set
Cylinder and spring；Wherein,
The sleeve includes the first cavity, the second cavity and third cavity, and first cavity and the third cavity are located at institute
The both ends of sleeve are stated, first cavity is connected to the third cavity by second cavity；
The spring is set in first cavity, and the scalable probe is across the spring and second cavity, and institute
The tail portion for stating scalable probe extends in the third cavity, and first chamber is extended on the head of the scalable probe
Body；The scalable probe tip is equipped with baffle, and the baffle is contacted with the spring, makes the spring in compressive state；
The range sensor is located at the third cavity other end, deposits between the range sensor and the scalable probe
In certain distance.
7. a kind of workpiece external diameter measuring device according to claim 6, which is characterized in that the sleeve is by symmetrical configuration
Two valve half circular sleeves are put together.
8. a kind of workpiece external diameter measuring device according to claim 1, which is characterized in that the scalable probe is contact
Formula hemispherical probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910278832.2A CN109931900A (en) | 2019-04-09 | 2019-04-09 | A kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910278832.2A CN109931900A (en) | 2019-04-09 | 2019-04-09 | A kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement device |
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| CN109931900A true CN109931900A (en) | 2019-06-25 |
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| CN201910278832.2A Pending CN109931900A (en) | 2019-04-09 | 2019-04-09 | A kind of ultralow temperature shrinkage workpiece outer diameter multiple spot rapid measurement device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005055282A (en) * | 2003-08-04 | 2005-03-03 | Tokyo Seimitsu Co Ltd | Measuring method and measuring device |
| CN202471038U (en) * | 2012-02-20 | 2012-10-03 | 台州万洲机械有限公司 | Outer diameter measuring device |
| CN104634305A (en) * | 2015-02-06 | 2015-05-20 | 中国科学技术大学 | Hydraulic positioning device for inner cavity of pipeline |
| CN106382900A (en) * | 2016-08-19 | 2017-02-08 | 江苏科技大学 | Online detection device for diameter and radial runout of rotary body part and measuring method |
| CN108680433A (en) * | 2018-05-15 | 2018-10-19 | 北京大学 | A kind of method and apparatus measuring artery outer diameter variation |
| CN208043008U (en) * | 2018-04-25 | 2018-11-02 | 湖南江滨机器（集团）有限责任公司 | A kind of piston outside diameter integrated measurer |
-
2019
- 2019-04-09 CN CN201910278832.2A patent/CN109931900A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005055282A (en) * | 2003-08-04 | 2005-03-03 | Tokyo Seimitsu Co Ltd | Measuring method and measuring device |
| CN202471038U (en) * | 2012-02-20 | 2012-10-03 | 台州万洲机械有限公司 | Outer diameter measuring device |
| CN104634305A (en) * | 2015-02-06 | 2015-05-20 | 中国科学技术大学 | Hydraulic positioning device for inner cavity of pipeline |
| CN106382900A (en) * | 2016-08-19 | 2017-02-08 | 江苏科技大学 | Online detection device for diameter and radial runout of rotary body part and measuring method |
| CN208043008U (en) * | 2018-04-25 | 2018-11-02 | 湖南江滨机器（集团）有限责任公司 | A kind of piston outside diameter integrated measurer |
| CN108680433A (en) * | 2018-05-15 | 2018-10-19 | 北京大学 | A kind of method and apparatus measuring artery outer diameter variation |
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Application publication date: 20190625 |