CN207439384U - Major diameter sealing ring internal-and external diameter precision measuring instrument - Google Patents
Major diameter sealing ring internal-and external diameter precision measuring instrument Download PDFInfo
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- CN207439384U CN207439384U CN201720290325.7U CN201720290325U CN207439384U CN 207439384 U CN207439384 U CN 207439384U CN 201720290325 U CN201720290325 U CN 201720290325U CN 207439384 U CN207439384 U CN 207439384U
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- sealing ring
- vernier
- external diameter
- swing arm
- magnetostriction
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Abstract
The utility model discloses a kind of major diameter sealing ring internal-and external diameter precision measuring instruments.It includes measuring table, lifting arm, swing arm, magneto strictive sensor, laser displacement sensor and data acquisition device；Lifting arm one end is rack-mount, and the other end of lifting arm is flexibly connected with one end of swing arm；Lifting arm can oscilaltion, the rotatable swing of swing arm；Magneto strictive sensor includes a magnetostriction vernier measuring staff；Magnetostriction vernier measuring staff is installed on a swing arm；There are two vernier on magnetostriction vernier measuring staff, there are one magnet rings on each vernier top；There are one laser displacement sensors for each vernier lower end；Laser displacement sensor, magneto strictive sensor are connected with data acquisition device.The major diameter sealing ring internal-and external diameter precision measuring instrument of the utility model, high certainty of measurement, measurement efficiency is high, at low cost, and measurement is convenient, is suitable for the eccentricity issues caused by manually placing.The instrument is suitable for the internal-and external diameter accurate measurement of other ring shape parts.
Description
Technical field
The utility model belongs to Technology of Precision Measurement field, is related to a kind of major diameter sealing ring internal-and external diameter precision measuring instrument.
Background technology
The accurate measurement of the internal-and external diameter of sealing element is long-standing technical barrier.Traditional vernier caliper, which belongs to, to be connect
Touch measures, and since sealing member material elasticity is larger, measurement accuracy can be only sustained in millimetre range.It is less than for diameter
The middle-size and small-size sealing element of 300mm measures internal-and external diameter using image analysis technologies such as photographies, can reach degree of precision.And for
Diameter is more than the large and medium-sized sealing element of 300mm, can only generally π rulers be used to measure outer diameter, using large-scale vernier caliper measurement internal diameter,
Do not only exist " indeterminacy " problem of contact type measurement, also there are it is time-consuming and laborious the problem of.Three-coordinates measuring machine can be used for pair
Large and medium-sized sealing element of the diameter more than 300mm carries out the accurate measurement of internal-and external diameter, and still, three-coordinates measuring machine is except expensive
Outside, it is also more there are sampled point, the problem of data processing time is long, and efficiency is low.
In conclusion in the prior art for the essence of major diameter sealing ring (diameter is more than the large and medium-sized sealing element of 300mm)
Close measurement lacks appropriate measuring instrument:Traditional π ruler measurement accuracy is low, and three-coordinates measuring machine is expensive, measurement efficiency
It is low.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of high certainty of measurement, measurement efficiency it is high,
Major diameter sealing ring internal-and external diameter precision measuring instrument at low cost.
The technical solution of the utility model is as follows：
A kind of major diameter sealing ring internal-and external diameter precision measuring instrument, it includes measuring table, lifting arm, swing arm, mangneto and stretches
Contracting sensor, laser displacement sensor and data acquisition device；Lifting arm one end is rack-mount, the other end of lifting arm with
One end flexible connection of swing arm；Lifting arm can oscilaltion, the rotatable swing of swing arm；Magneto strictive sensor includes a magnetic
Cause flexible vernier measuring staff；Magnetostriction vernier measuring staff is installed on a swing arm；Vernier there are two sets on magnetostriction vernier measuring staff,
Each vernier top sets that there are one magnet rings (floating ball)；Each vernier lower end sets that there are one laser displacement sensors；Two laser positions
Displacement sensor respectively there are one gauge head, inner laser displacement sensor gauge head can measure the gauge head to internal diameter of the seal ring justify away from
From outer laser displacement sensor gauge head can measure the distance that the gauge head is justified to sealing ring outer diameter；Laser displacement sensor, magnetic
Telescoping sensor is caused to be connected with data acquisition device.
Further, cylinder is vertically installed at below lifting arm, and lifting arm can be promoted by cylinder and lifted.
Further, the other end of lifting arm is flexibly connected with one end of swing arm by rotation axis, swing arm and rotation
Axis is fixedly connected, and rotation axis is connected with driving motor；Swing arm can be driven by driving motor to be rotated.
Further, measuring table is circular.
Further, the center of circle of measuring table is located at the underface of rotation axis axle center (fulcrum of swing arm), i.e. measurement is flat
The center of circle of platform is with rotation axis axle center (fulcrum of swing arm) on same vertical curve.
Further, lifting arm and swing arm are all horizontal.
Further, magnetostriction line is housed in magnetostriction vernier measuring staff；Electronics storehouse is located at magnetostriction vernier measuring staff
One end.
Further, data acquisition device is connected with electric-control system.
Further, measuring table is mounted on cabinet, and PC machine is equipped in cabinet, and cabinet is equipped with what is be connected with PC machine
Display screen；Data acquisition device and the electric-control system of PC machine connect, and the data that measurement obtains are calculated, handled by electric-control system
Measurement result is shown on a display screen afterwards.
Using above-mentioned major diameter sealing ring internal-and external diameter precision measuring instrument, the method for major diameter sealing ring internal-and external diameter is measured such as
Under：Measured workpiece (major diameter sealing ring) is placed on circular measuring table, as makes measured workpiece same with measuring table as possible
The heart；Mobile laser displacement sensor gauge head manually, makes measured workpiece sealing ring be generally in two laser displacement sensor gauge heads
The lower section in centre position makes the horizontal distance between laser displacement sensor gauge head and sealing ring in 20-40mm；Start measurement to press
Button, lifting cylinder drive lifting arm to move down, and swing arm driven by stepper motors drives laser displacement sensor gauge head along sealing
Circle rotates a circle, that is, completes the acquisition of measurement data；Measurement result will be included shielding after Correlation method for data processing by electric-control system
On curtain.
Measuring principle：Swing arm drives laser displacement sensor and magneto strictive sensor rotation to turn around, two laser positions
The gauge head of displacement sensor can measure respectively gauge head to internal diameter of the seal ring circle and outer diameter circle distance, two of magneto strictive sensor
Magnet ring accurate can measure the radius of the measuring route circle of two laser displacement sensor gauge heads；The data that measurement obtains are passed through into public affairs
Formula is calculated to get to the internal-and external diameter data of major diameter sealing ring.
Electric-control system will measure obtained data and be calculated by the following formula to get to the internal diameter data of sealing ring：
RIt is interior=(maxIt is interior+minIt is interior)/2+r
In above formula, RIt is interiorThe radius justified for the internal diameter of sealing ring；maxIt is interiorAnd minIt is interiorInner laser displacement sensing is represented respectively
The rotation of device gauge head is turned around, the maximum range and minimum range that the gauge head to internal diameter of the seal ring is justified；R is that inner laser displacement senses
The rotation of device gauge head is turned around, the radius of the measuring route circle of the gauge head.
Electric-control system will measure obtained data and be calculated by the following formula to get to the outer diameter data of sealing ring：
ROutside=R- (maxOutside+minOutside)/2
In above formula, ROutsideThe radius justified for the outer diameter of sealing ring；R is that outer laser displacement sensor gauge head rotation is turned around,
The radius of the measuring route circle of the gauge head；maxOutsideAnd minOutsideRepresent that outer laser displacement sensor gauge head rotation is turned around respectively,
The maximum range and minimum range that the gauge head is justified to sealing ring outer diameter.
The measuring instrument of the utility model is a kind of using the advanced sensors element such as displacement sensor and contactless gauge head
Contactless automatic Precision Measurement instrument.The measurement range of the measuring instrument is set to 150mm to 1200mm, i.e., measurable sealing ring
Minimum diameter is not less than 150mm, and maximum outside diameter is no more than 1200mm.The measurement accuracy 0.01mm of the measuring instrument, that is, pass through standard
After the verification of steel annulus, duplicate measurements precision is not more than 0.01mm.The resolving power of the measuring instrument is according to measurement and displacement sensor
Precision can reach less than 8 μm.
The beneficial effects of the utility model：
The major diameter sealing ring internal-and external diameter precision measuring instrument and measuring method of the utility model, by laser displacement sensor and
Magneto strictive sensor is combined together, simple in sturcture, ingenious in design, and swing arm drives laser displacement sensor and magnetostriction
Sensor rotation one encloses, and the gauge head of two laser displacement sensors can measure what gauge head was justified to internal diameter of the seal ring circle and outer diameter respectively
Distance, two magnet rings of magneto strictive sensor accurate can measure the half of the measuring route circle of two laser displacement sensor gauge heads
Thus footpath has been well solved because manually placing the problem of measured workpiece causes caused by bias, in this way, only need to be by simple public
Formula calculates, you can obtains the internal-and external diameter data of major diameter sealing ring, measurement is thus made to become simple and convenient and quick, improve survey
Amount efficiency.
The major diameter sealing ring internal-and external diameter precision measuring instrument and measuring method of the utility model, have the following advantages that：
1) high certainty of measurement, severe measurement accuracy can reach 0.01mm.
2) measurement is convenient, is adapted to the eccentricity issues caused by manually placing.
3) three-coordinates measuring machine is compared, measurement cost is low and measurement efficiency is higher.
4) it is applicable to the internal-and external diameter accurate measurement of other ring shape parts.
Description of the drawings
Fig. 1 is a kind of structure diagram of major diameter sealing ring internal-and external diameter precision measuring instrument of the utility model；
Fig. 2 is the internal diameter of the seal ring measuring principle figure in the utility model；
Fig. 3 is the sealing ring outside diameter measuring schematic diagram in the utility model.
In figure：1st, measuring table 2, measured workpiece 3, laser displacement sensor 4, vernier
5th, magnetostriction vernier measuring staff 6, magnet ring 7, electronics storehouse 8, swing arm 9, cylinder
10th, driving motor 11, lifting arm 12, display screen 13, cabinet
Specific embodiment
The utility model is further described below in conjunction with drawings and examples.
Embodiment 1
As shown in Figure 1, a kind of major diameter sealing ring internal-and external diameter precision measuring instrument of the utility model, it include measuring table 1,
Lifting arm 11, swing arm 8, magneto strictive sensor, laser displacement sensor and data acquisition device, electric-control system；Lifting arm
11 and swing arm 8 be all horizontal；11 one end of lifting arm is rack-mount, and cylinder 9 is vertically installed at 11 lower section of lifting arm, rises
Drop arm 11 can promote lifting by cylinder 9；The other end of lifting arm 11 is flexibly connected with one end of swing arm 8 by rotation axis, pendulum
Swing arm is fixedly connected with rotation axis, and the upper end of rotation axis is connected with driving motor 10；Swing arm 8 can be by setting driving above it
Motor 10 (stepper motor) driving rotation.Magneto strictive sensor (i.e. device for sensing linear displacement caused by magnetostriction) is stretched including a mangneto
Contracting vernier measuring staff 5；Magnetostriction vernier measuring staff 5 is mounted on swing arm 8；Magnetostriction is housed in magnetostriction vernier measuring staff 5
Line (waveguide filament)；Electronics storehouse 7 is located at one end of magnetostriction vernier measuring staff；There are two verniers for set on magnetostriction vernier measuring staff 5
4, there are one each vernier top installations and 5 discontiguous magnet ring 6 (floating ball) of magnetostriction vernier measuring staff；Each vernier lower end is set
There are one laser displacement sensors 3.
Measuring table 1 is circular, and the center of circle of measuring table is located at the underface of rotation axis axle center (fulcrum of swing arm),
That is the center of circle of measuring table and rotation axis axle center (fulcrum of swing arm) is on same vertical curve.Measuring table 1 is mounted on machine
On cabinet 13, Industrial PC Computer is provided in cabinet, cabinet is equipped with the display screen 12 being connected with PC machine；Laser displacement sensor 3, magnetic
Telescoping sensor 5 is caused to be connected with data acquisition device, the electric-control system connection of data acquisition device and PC machine, electric-control system will
Measure obtained data calculated, handle after measurement result is shown on the display 12.
Method that is a kind of to utilize above-mentioned major diameter sealing ring internal-and external diameter precision measuring instrument, measuring major diameter sealing ring internal-and external diameter
It is as follows：Measured workpiece 2 (major diameter sealing ring) is placed on circular measuring table 1, as makes measured workpiece 2 flat with measurement as possible
Platform 1 is concentric；Mobile laser displacement sensor gauge head (abbreviation laser feeler) manually, makes sealing ring be generally in two laser feelers
The lower section in centre position makes the horizontal distance about 30mm between two laser feelers and sealing ring.Start measurement button, lifting cylinder
Lifting arm is driven to move down, swing arm driven by stepper motors drives laser feeler to rotate a circle along sealing ring, that is, completes measurement
The acquisition of data.Measurement result will be displayed on the screen after Correlation method for data processing by electric-control system.
Measuring principle is as follows:Swing arm drives laser displacement sensor and magneto strictive sensor around the (sealing of measured workpiece 2
Circle) it revolves and turns around, inner laser displacement sensor gauge head can measure the distance that the gauge head is justified to internal diameter of the seal ring, magnetostriction
The internal magnetic ring (inner magnet ring) of sensor accurate can measure the radius of the measuring route circle of inner gauge head；Outer laser position
Displacement sensor gauge head can measure the distance that the gauge head is justified to sealing ring outer diameter, outer magnetic ring (the outer magnetic of magneto strictive sensor
Ring) it accurate can measure the radius that the measuring route of outer gauge head is justified；Laser displacement sensor, magneto strictive sensor will be above-mentioned
Measured data is transported to the electric-control system of PC machine by data acquisition device, and the electric-control system (data processing module) of PC machine will be surveyed
The data measured are calculated, handle after by measurement result (internal-and external diameter of major diameter sealing ring) display on the display 12.
As shown in Fig. 2, the internal diameter measuring principle and formulation process and method of major diameter sealing ring are as follows：It is real in Fig. 2
Line great circle represents the internal diameter circle of measured workpiece sealing ring, and the big radius of circle, that is, internal diameter of the seal ring of solid line is represented with R；Dotted line roundlet represents
The measuring route circle of laser feeler, the small radius of circle of dotted line are represented with r.Offset distance between two centers of circle is represented with e.Laser feeler
One circle of scanning, can accurately measure the series of values such as AB, CD, i.e., the distance that gauge head to internal diameter of the seal ring is justified.I.e.：AB,CD
Equivalence is measured by laser range sensor.maxIt is interiorAnd minIt is interiorRepresent that inner laser displacement sensor gauge head rotation is turned around respectively,
Maximum AB and minimum value in the maximum range and minimum range that the gauge head is justified to internal diameter of the seal ring, the i.e. scan values of the gauge head
CD.The radius r of dotted line roundlet is obtained by the internal magnetic ring accurate measurement of magneto strictive sensor.
It is calculated by geometry, it can be deduced that the big radius of circle of solid line (i.e. internal diameter of the seal ring) R in Fig. 2It is interiorCalculation formula it is as follows.
In Fig. 2, AB=maxIt is interior, CD=minIt is interior, O1O2=e,
O1A=O1C=r, e=(maxIt is interior-minIt is interior)/2.
O2B=AB+O1A-O1O2=maxIt is interior+r-e
O2D=CD+O1C+O1O2=minIt is interior+r+e
RIt is interior=(O2B+O2D)/2=(maxIt is interior+minIt is interior)/2+r
As shown in figure 3, the outside diameter measuring principle and formulation process and method of major diameter sealing ring are as follows：It is real in Fig. 3
Line roundlet represents the outer diameter circle of 2 sealing ring of measured workpiece, and the small radius of circle of solid line is represented with r；Dotted line great circle represents laser feeler
Measuring route is justified, and the big radius of circle of dotted line is represented with R.Offset distance between two centers of circle is represented with e.One circle of laser feeler scanning,
The series of values such as AB, CD, i.e., the distance that gauge head is justified to sealing ring outer diameter can be accurately measured.I.e.：AB, CD equivalence are by laser
Distance measuring sensor measures.maxOutsideAnd minOutsideRepresent that outer laser displacement sensor gauge head rotation is turned around respectively, the gauge head is to close
The maximum range and minimum range of seal outer diameter circle, i.e., maximum CD and minimum value AB in the scan values of the gauge head.Dotted line is big
Round radius R is obtained by the outer magnetic ring accurate measurement of magneto strictive sensor.
It is calculated by geometry, it can be deduced that the small radius of circle of solid line (i.e. sealing ring outer diameter) R in Fig. 3OutsideCalculation formula it is as follows.
In Fig. 3, AB=minOutside, CD=maxOutside, O1O2=e,
O1B=O1D=R, O1C=R-maxOutside.
O2A=O1B-AB-O1O2=R-minOutside-e
O2C=O1C+O1O2=R-maxOutside+e
ROutside=(O2A+O2C)/2=R- (maxOutside+minOutside)/2
The measuring instrument is a kind of using the contactless of the advanced sensors element such as displacement sensor and contactless gauge head
Automatic Precision Measurement instrument.Measurement range is set to 150mm to 1200mm, i.e., the minimum diameter of measurable sealing ring is not less than 150mm,
Maximum outside diameter is no more than 1200mm.Measurement accuracy 0.01mm, i.e., after being verified by standard steel annulus, duplicate measurements precision is little
In 0.01mm.Resolving power can reach less than 8 μm according to displacement sensor precision.
Claims (9)
1. a kind of major diameter sealing ring internal-and external diameter precision measuring instrument, which is characterized in that it includes measuring table, lifting arm, swing
Arm, magneto strictive sensor, laser displacement sensor and data acquisition device；Lifting arm one end is rack-mount, lifting arm
The other end be flexibly connected with one end of swing arm；Lifting arm can oscilaltion, the rotatable swing of swing arm；Magnetostriction senses
Device includes a magnetostriction vernier measuring staff；Magnetostriction vernier measuring staff is installed on a swing arm；It is covered on magnetostriction vernier measuring staff
There are two vernier, each vernier top sets that there are one magnet rings；Each vernier lower end sets that there are one laser displacement sensors；Laser position
Displacement sensor, magneto strictive sensor are connected with data acquisition device.
2. major diameter sealing ring internal-and external diameter precision measuring instrument as described in claim 1, which is characterized in that cylinder is vertically installed at
Below lifting arm, lifting arm can be promoted by cylinder and lifted.
3. major diameter sealing ring internal-and external diameter precision measuring instrument as described in claim 1, which is characterized in that the other end of lifting arm
It being flexibly connected with one end of swing arm by rotation axis, swing arm is fixedly connected with rotation axis, and rotation axis is connected with driving motor,
Swing arm can be driven by driving motor to be rotated.
4. major diameter sealing ring internal-and external diameter precision measuring instrument as claimed in claim 3, which is characterized in that measuring table is circular
's.
5. major diameter sealing ring internal-and external diameter precision measuring instrument as claimed in claim 4, which is characterized in that the center of circle of measuring table
Positioned at the underface in rotation axis axle center.
6. the major diameter sealing ring internal-and external diameter precision measuring instrument as described in claim 1,2 or 3, which is characterized in that lifting arm and
Swing arm is all horizontal.
7. the major diameter sealing ring internal-and external diameter precision measuring instrument as described in claim 1,2 or 3, which is characterized in that magnetostriction
Magnetostriction line is housed in vernier measuring staff；Electronics storehouse is located at one end of magnetostriction vernier measuring staff.
8. the major diameter sealing ring internal-and external diameter precision measuring instrument as described in claim 1,2 or 3, which is characterized in that data acquisition
Device is connected with electric-control system.
9. major diameter sealing ring internal-and external diameter precision measuring instrument as claimed in claim 8, which is characterized in that measuring table is mounted on
On cabinet, PC machine is equipped in cabinet, cabinet is equipped with the display screen being connected with PC machine；The automatically controlled system of data acquisition device and PC machine
System connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720290325.7U CN207439384U (en) | 2017-03-23 | 2017-03-23 | Major diameter sealing ring internal-and external diameter precision measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720290325.7U CN207439384U (en) | 2017-03-23 | 2017-03-23 | Major diameter sealing ring internal-and external diameter precision measuring instrument |
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ID=62395697
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705918A (en) * | 2017-03-23 | 2017-05-24 | 上海威纳工程技术有限公司 | Precise measurement instrument and method for internal and external diameters of large-diameter seal ring |
| CN110132208A (en) * | 2019-06-12 | 2019-08-16 | 山东瑞新轴承制造有限公司 | A kind of bearing bore diameter measuring device |
| CN110823161A (en) * | 2019-11-20 | 2020-02-21 | 利辛县宝隆橡塑密封件有限责任公司 | Rubber seal detection device |
| CN113482987A (en) * | 2021-09-07 | 2021-10-08 | 江苏沙钢集团有限公司 | Hydraulic cylinder displacement fault detection device |
| CN113776484A (en) * | 2021-08-13 | 2021-12-10 | 华电电力科学研究院有限公司 | Non-roundness measuring device and method for pressure-bearing equipment |
-
2017
- 2017-03-23 CN CN201720290325.7U patent/CN207439384U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705918A (en) * | 2017-03-23 | 2017-05-24 | 上海威纳工程技术有限公司 | Precise measurement instrument and method for internal and external diameters of large-diameter seal ring |
| CN110132208A (en) * | 2019-06-12 | 2019-08-16 | 山东瑞新轴承制造有限公司 | A kind of bearing bore diameter measuring device |
| CN110823161A (en) * | 2019-11-20 | 2020-02-21 | 利辛县宝隆橡塑密封件有限责任公司 | Rubber seal detection device |
| CN113776484A (en) * | 2021-08-13 | 2021-12-10 | 华电电力科学研究院有限公司 | Non-roundness measuring device and method for pressure-bearing equipment |
| CN113482987A (en) * | 2021-09-07 | 2021-10-08 | 江苏沙钢集团有限公司 | Hydraulic cylinder displacement fault detection device |
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