CN208765636U - Claw-type deep hole inner diameter measuring device - Google Patents
Claw-type deep hole inner diameter measuring device Download PDFInfo
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- CN208765636U CN208765636U CN201821527752.3U CN201821527752U CN208765636U CN 208765636 U CN208765636 U CN 208765636U CN 201821527752 U CN201821527752 U CN 201821527752U CN 208765636 U CN208765636 U CN 208765636U
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- deep hole
- positioning core
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- 210000000078 claw Anatomy 0.000 claims abstract description 39
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000000691 measurement method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a claw formula deep hole internal diameter measuring device, the device is including location clamping mechanism, measurement display mechanism and be used for connecting location clamping mechanism and measurement display mechanism's motion transmission mechanism. The positioning and clamping mechanism realizes the positioning and clamping between the claw type inner diameter measuring tool and the measured workpiece; under the support of the positioning and clamping mechanism, the motion transmission mechanism drives the measurement display mechanism to move to a to-be-measured position of the inner diameter of the deep hole with the same diameter of the workpiece to be measured; and finally, completing the inner diameter measurement and display of the position to be measured of the constant-diameter deep hole of the measured workpiece by using a measurement display mechanism. The utility model discloses a claw formula internal diameter measuring tool adopts conical surface location, claw formula to press from both sides tightly, self-adaptation measurement, and easy operation can realize the high-efficient measurement of the constant diameter deep hole internal diameter of certain specification.
Description
Technical field
The utility model discloses a kind of claw inner diameter gauge, in particular to a kind of claw deep hole internal diameter measuring device belongs to
In deep hole detection instrument technical field.
Background technique
Deep hole/superdeep holes are the more difficult processing objects of mechanical manufacturing field one, and aperture precision is also to influence to produce
One important technology index of product attaching performance.Currently, traditional hole inner diameter measurement method mainly passes through slide calliper rule, calliper in part
It is measured after processing, this kind of measurement method is inconvenient, and artifical influence factor is big, and the active service based on aforementioned measurement method
The measurer also inconvenient accurate positioning realized with measured workpiece, causes the precision measured and efficiency to be difficult to be guaranteed very well.With
Large-scale, super spare parts are widely used in the products such as modern aircraft, steamer, large-scale precision instrument, to hole depth and aperture ratio greater than 5
The demand that is efficient, accurately measuring tool of deep hole or superdeep holes part is more more and more urgent.
Utility model content
Technical problem to be solved in the utility model is that existing longhole survey tool mentioned in the background art is deposited
In positioning attaching inconvenience, gauge head calibration is inconvenient and the problems such as cantilever is too long occurs in motion work.
To solve the above problems, technical solution adopted in the utility model is:
A kind of claw deep hole internal diameter measuring device, including positioning and clamping mechanism, measurement indication mechanism and fixed to connect
The movement transferring of position clamp system and measurement indication mechanism；
The clamp system includes T-type positioning core axle, and T-type positioning core axle butt end end face is equipped with taper positioning surface, outside taper end
Circle is equipped with screw thread, is threadedly coupled translational nut in T-type positioning core axle taper end outer circle, is rotationally set with ring in translational nut outer circle
Shape disk, circular disk are circumferentially provided with radial groove, and sliding is provided with radial slider in radial groove；T-type positioning core axle is thick
Multiple support columns are provided in the outer circle of end, mounting height of the every support column apart from T-type positioning core axle butt end periphery is equal, branch
Be hinged with the claw in asymmetric V on dagger, the wedge angle of claw and support are column articulated, the one end of claw far from measured workpiece with
Radial slider is hinged, and the claw other end is contacted with measured workpiece；T-type positioning core axle center offers a notch cuttype through hole, cone
The notch cuttype through hole diameter of shape positioning surface is smaller, and the cone angle of taper positioning surface is according to workpiece for measurement outlet of deep hole chamfer design；
The measurement indication mechanism includes sleeve, and sleeve is provided with conical sliding block, sleeve both ends distinguish attaching left end cap and
Right end cap, the same cross section in sleeve middle part are equipped with radial through-hole, and conical sliding block is tapered facing towards right end cap, the cone angle in tapered face
It is 45 °, is provided with sliding slot along its bus on the tapered face of conical sliding block, sliding slot is provided with a measuring head base, and measuring head base passes through sleeve
Radial through-hole connects a gauge head, between measuring head base and gauge head adjustable distance be 1~3mm, and each gauge head top and cone
The distance of shape center line is identical；Left and right end cap central is provided with a through-hole, and the through-hole of left end cap is provided with adjusting spiral shell
Mother is equipped with the first pressure spring between adjusting nut and conical sliding block, the second pressure spring, the first pressure are housed between right end cap and conical sliding block
Elastic force of the elastic force of spring less than the second pressure spring；T-type hollow shaft, the butt end face of T-type hollow shaft and right end cap are fixed on right end cap
Upper to be connected, displacement transmitting mandrel is coaxially installed in T-type hollow shaft by sliding bearing one, and displacement transmitting mandrel one end passes through the right side
End cap is coaxially connected with conical sliding block, and the second compression spring sleeve is set on displacement transmitting mandrel, and the displacement transmitting mandrel other end stretches out T
Outside type hollow shaft；It is provided with support ring on T-type hollow shaft excircle, is transmitted in support ring and the displacement stretched out outside T-type hollow shaft
Along displacement transmitting mandrel axial direction connection internal diameter percentage along displacement transmitting mandrel axial direction setting dial framework, dial framework between end face of mandrel
The measuring head of table, dial bore gage is contacted with the end face that displacement transmitting mandrel stretches out outside T-type hollow shaft；
The movement transferring includes hollow screw rod, and hollow screw rod is by two coaxial sleeve of sliding bearing at the axle journal of both ends
In T-type hollow shaft, hollow screw rod one end is passed through T-type positioning core axle, hollow screw rod and T-type positioning core axle and is connected using screw thread
It connects, the hollow screw rod other end is socketed in support ring by sliding bearing three；Guide rod one end and support ring are connected, and the other end can
Slidably pass through the through-hole on T-type positioning core axle.
Preferably, improved mat is equipped on the surface that claw is contacted with measured workpiece.
Preferably, it is convenient for changing gauge head, uses and is threadedly coupled between measuring head base and gauge head.
Preferably, the quantity of guide rod is two, is symmetrically mounted in support ring and T-type positioning core axle.
As a preferred embodiment, circumferentially there are four the radial grooves of the quartering, radial slider to have four for setting for circular disk
A, sliding is provided with a radial slider in each radial groove；Four supports are provided in T-type positioning core axle butt end outer circle
Column, there are four claw tools；The sliding slot there are three trisection is opened along its bus method on the tapered face of conical sliding block, sleeve middle part is same
The radial through-hole there are three trisection is set on cross section.
The beneficial effects of the utility model are:
1, this claw deep hole internal diameter measuring device is clamped, it is easy to accomplish measurer and measured workpiece using conical surface positioning, claw
Positioning and clamping.
2, this claw deep hole internal diameter measuring device is avoided movement transferring and was occurred using support ring and guide rod
Long cantilever and the measurement accuracy for influencing internal diameter.
3, this claw deep hole internal diameter measuring device, using the elastic force and gauge head of the first pressure spring and the second pressure spring by hole
The active force of wall comes the transient motion of Collaborative Control gauge head and position, and convenient for the calibration of measurer gauge head, deep hole internal diameter is effectively ensured
Detection accuracy.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the positioning and clamping mechanism illustraton of model of the utility model；
Fig. 3 is the measurement indication mechanism cross-sectional view of the utility model；
Fig. 4 is the motion work schematic diagram of the utility model；
Fig. 5 is the case study on implementation schematic diagram of the utility model.
Specific embodiment
To keep the content of the utility model more obvious and easy to understand, specific embodiment is done further below in conjunction with attached drawing
Description.
As shown in Figure 1, a kind of claw deep hole internal diameter measuring device includes positioning and clamping mechanism 1100, measurement indication mechanism
1200 and to connect positioning and clamping mechanism 1100 and measure indication mechanism 1200 movement transferring 1300.
As shown in Fig. 2, positioning and clamping mechanism 1100 includes T-type positioning core axle 1101, support column 1102, claw 1103, diameter
To sliding block 1104, circular disk 1105 and translational nut 1106；1101 butt end end face of T-type positioning core axle is equipped with taper positioning surface,
Taper end outer circle is equipped with screw thread, and 1106 centre bore of translational nut is connected with 1101 taper end outer circle of T-type positioning core axle using screw thread pair, ring
Shape disk 1105 is rotatably mounted around in 1106 outer circle of translational nut, and every support column 1102 is apart from T-type positioning core axle 1101
The mounting height of butt end periphery is equal；1101 center of T-type positioning core axle is additionally provided with a notch cuttype through hole, and notch cuttype through hole is straight
Diameter is left small and right large, and the cone angle of taper positioning surface should be designed according to 2 orifice chamfer of workpiece for measurement；4 support columns 1102 are evenly arranged in T
In 1101 butt end outer circle of type positioning core axle；4 claws 1103 are in asymmetrical V-type, and 1103 middle part of claw is adopted with support column 1102
With column hinge-coupled, the one end of claw 1103 far from measured workpiece 2 and radial slider 1104 also use column hinge-coupled, pressure
The surface that 1103 other end of pawl is contacted with measured workpiece 2 is equipped with improved mat；Radial slider 1104 is mounted on circular disk
In the radial groove of the 1105 circumferential quarterings.
As shown in figure 3, measurement indication mechanism 1200 includes sleeve 1201, conical sliding block 1202, left end cap 1203, right end cap
1204, adjusting nut 1205, the first pressure spring 1206, the second pressure spring 1207, displacement transmitting mandrel 1210, T-type hollow shaft 1211, interior
Diameter dial gauge 1212 and dial framework 1213；Sleeve 1201 is provided with conical sliding block 1202, and attaching left end cap is distinguished at 1201 both ends of sleeve
1203 and right end cap 1204, the 1201 same cross section in middle part of sleeve is equipped with the radial through-hole of one group of trisection；Left and right end cap
1203 centers are provided with a through-hole, and the through-hole of left end cap is provided with adjusting nut 1205；Adjusting nut 1205 and conical sliding block
First pressure spring 1206 is housed between 1202, the second pressure spring 1207, the first pressure are housed between right end cap 1204 and conical sliding block 1202
Elastic force of the elastic force of spring 1206 less than the second pressure spring 1207；Conical sliding block 1202 is tapered facing towards right end cap, the cone angle in tapered face
It is 45 °, is provided with the sliding slot of trisection on the tapered face of conical sliding block 1202 along its bus method, each sliding slot is provided with a gauge head
Seat 1208, measuring head base 1208 pass through the radial through-hole of sleeve 1201, connect a gauge head 1209, measuring head base 1208 and gauge head 1209
Between using be threadedly coupled, between measuring head base and gauge head adjustable distance be 1~3mm, and 1209 top of each gauge head and cone
The distance of 1202 center line of shape sliding block is identical；Displacement transmitting 1210 one end of mandrel is coaxial connected with conical sliding block 1202, and displacement passes
It passs 1210 other end of mandrel and sequentially passes through right end cap 1204, T-type hollow shaft 1211, and stretch out outside T-type hollow shaft, T-type hollow shaft
Butt end face and right end cap are connected；Sliding is equipped between displacement transmitting mandrel 1210 and right end cap 1204 and T-type hollow shaft 1211
Bearing 1；It is provided with support ring 1304 on T-type hollow shaft excircle, in support ring and stretches out the displacement outside T-type hollow shaft
It transmits and transmits mandrel axial direction setting dial framework 1213 along displacement between end face of mandrel, transmitted along mandrel axial direction connection along dial framework along displacement
Diameter dial gauge 1212, it is outstanding that the measuring head and displacement transmitting mandrel 1210 of dial bore gage 1212 stretch out the end face outside T-type hollow shaft
Arm contact.
As shown in figure 4, movement transferring 1300 include hollow screw rod 1301, sliding bearing 2 1302, guide rod 1303,
Support ring 1304 and sliding bearing 3 1305；Hollow screw rod 1301 is by 2 1302 coaxial package of sliding bearing at the axle journal of both ends
In T-type hollow shaft 1211, hollow 1301 one end of screw rod passes through T-type positioning core axle 1101, hollow screw rod 1301 and T-type locating core
Using being threadedly coupled, hollow 1301 other end of screw rod is socketed in support ring 1304 axis 1101 by sliding bearing 3 1305；It leads
It is connected to 1303 one end of bar and support ring 1304, the other end is slidably disposed through the through-hole on T-type positioning core axle 1101；Guide rod
1303 quantity is two, is symmetrically mounted in support ring 1304 and T-type positioning core axle 1101.
A kind of measurement method of claw deep hole internal diameter measuring device:
1) before measuring, suitable gauge head 1209 is determined according to the size of measured workpiece equal diameter deep hole internal diameter first, by it
It is connected with measuring head base 1208；By internal diameter ring standard gauge, mobile adjusting nut 1205, by regulating and controlling the first pressure spring 1206 and second
The elastic force of pressure spring 1207 completes the staking-out work of the measurer, records calibration value, adjusts 1212 zero-bit of dial bore gage；
2) when measuring, as shown in figure 5, being realized claw deep hole internal diameter measuring device 1 by positioning and clamping mechanism 1100 and being tested
Positioning and clamping between workpiece 2；Under the support of positioning and clamping mechanism 1100, rotary hollow screw rod drives movement transferring
1300 drive measurement 1200 row of indication mechanism to the position to be measured of 2 equal diameter deep hole internal diameter of measured workpiece, by measurement indication mechanism
1200 completions are as follows to the inner diameter measurement and display, specific implementation step of 2 equal diameter deep hole position to be measured of measured workpiece:
A) the T-type positioning core axle 1101 of positioning and clamping mechanism 1100 is pressed on measured workpiece deep hole end face, mobile translation
Nut 1106 drives four claws 1103 to clamp tested work by circular disk 1105, radial slider 1104 and support column 1102
The positioning and clamping of claw deep hole internal diameter measuring device 1 and measured workpiece 2 are completed in the outer surface of part 2；
B) under the support of positioning and clamping mechanism 1100,1301 right end of rotary hollow screw rod by sliding bearing 2 1302, is led
To bar 1303, support ring 1304 and sliding bearing 3 1305, drive in the measurement operation to 2 deep hole of measured workpiece of indication mechanism 1200
The position to be measured of diameter；
C) the first pressure spring 1206 and the second pressure spring 1207 elastic force and three gauge heads 1209 by hole wall active force
Under collective effect, conical sliding block 1202 can slidably reciprocate in sleeve 1201 along axial generation, because of 1202 tapered surface of conical sliding block
Cone angle be 45 °, conical sliding block 1202 is the variable quantity of the unilateral radius in aperture to be measured along axial displacement, passes through displacement and passes
Mandrel 1210 is passed by conical sliding block 1202 in axial displacement reflection to dial bore gage 1212, readout value, in conjunction with mark
Fixed value calculation goes out the internal diameter of current location.
If the hole internal diameter on same section at different location d) need to be measured, it is only necessary to the connection support of turning T-type hollow shaft 1211
One end of ring makes three gauge heads 1209 generate rotation in current cross-section in the case where conical sliding block 1202 and measuring head base 1208 are constrained；
If the deep hole internal diameter on different cross section need to be measured, it is only necessary to rotate hollow screw rod 1301, make measure indication mechanism 1200 operation to
On the section of survey.
The foregoing is merely the utility model relates to claw deep hole internal diameter measuring device a preferable case study on implementation, but
The scope of the utility model is not limited thereto example.
Claims (5)
1. a kind of claw deep hole internal diameter measuring device, it is characterised in that: including positioning and clamping mechanism, measurement indication mechanism and use
To connect positioning and clamping mechanism and measure the movement transferring of indication mechanism；
The clamp system includes T-type positioning core axle, and T-type positioning core axle butt end end face is equipped with taper positioning surface, and taper end outer circle is set
There is screw thread, translational nut is threadedly coupled in T-type positioning core axle taper end outer circle, is rotationally set with annular circle in translational nut outer circle
Disk, circular disk are circumferentially provided with radial groove, and sliding is provided with radial slider in radial groove；Outside T-type positioning core axle butt end
Multiple support columns are provided on circle, mounting height of the every support column apart from T-type positioning core axle butt end periphery is equal, support column
On be hinged with claw in asymmetric V, the wedge angle of claw and support column articulated, claw one end and radial direction far from measured workpiece
Sliding block is hinged, and the claw other end is contacted with measured workpiece；T-type positioning core axle center offers a notch cuttype through hole, and taper is fixed
The notch cuttype through hole diameter of plane is smaller, and the cone angle of taper positioning surface is according to workpiece for measurement outlet of deep hole chamfer design；
The measurement indication mechanism includes sleeve, and sleeve is provided with conical sliding block, and attaching left end cap and right end are distinguished in sleeve both ends
Lid, the same cross section in sleeve middle part are equipped with radial through-hole, and conical sliding block is tapered facing towards right end cap, and the cone angle in tapered face is
45 °, sliding slot is provided with along its bus on the tapered face of conical sliding block, and sliding slot is provided with a measuring head base, and measuring head base passes through the diameter of sleeve
To through-hole, a gauge head is connected, the adjustable range between measuring head base and gauge head is 1~3mm, and each gauge head top and taper are sliding
The distance of block center line is identical；Left and right end cap central is provided with a through-hole, and the through-hole of left end cap is provided with adjusting nut, adjusts
It saves and the first pressure spring is housed between nut and conical sliding block, the second pressure spring is housed between right end cap and conical sliding block, the first pressure spring
Elastic force of the elastic force less than the second pressure spring；It is fixed with T-type hollow shaft on right end cap, consolidates on the butt end face of T-type hollow shaft and right end cap
Even, displacement transmitting mandrel is coaxially installed in T-type hollow shaft by sliding bearing one, and displacement transmitting mandrel one end passes through right end cap
It is coaxially connected with conical sliding block, and the second compression spring sleeve is set on displacement transmitting mandrel, it is empty that the displacement transmitting mandrel other end stretches out T-type
Outside mandrel；It is provided with support ring on T-type hollow shaft excircle, transmits mandrel in support ring and the displacement stretched out outside T-type hollow shaft
It is interior along displacement transmitting mandrel axial direction connection dial bore gage along displacement transmitting mandrel axial direction setting dial framework, dial framework between end face
The measuring head of diameter dial gauge is contacted with the end face that displacement transmitting mandrel stretches out outside T-type hollow shaft；
The movement transferring includes hollow screw rod, and hollow screw rod exists by two coaxial package of sliding bearing at the axle journal of both ends
In T-type hollow shaft, hollow screw rod one end passes through T-type positioning core axle, and hollow screw rod is used with T-type positioning core axle and is threadedly coupled, in
The empty screw rod other end is socketed in support ring by sliding bearing three；Guide rod one end and support ring are connected, and the other end is slidably
Through-hole on T-type positioning core axle.
2. a kind of claw deep hole internal diameter measuring device according to claim 1, it is characterised in that: claw connects with measured workpiece
The surface of touching is equipped with improved mat.
3. a kind of claw deep hole internal diameter measuring device according to claim 1, it is characterised in that: between measuring head base and gauge head
Using threaded connection.
4. a kind of claw deep hole internal diameter measuring device according to claim 1, it is characterised in that: the quantity of guide rod is two
Root is symmetrically mounted in support ring and T-type positioning core axle.
5. a kind of claw deep hole internal diameter measuring device according to claim 1, it is characterised in that: circular disk is circumferentially arranged
There are four the radial grooves of the quartering, and there are four radial slider tools, and sliding is provided with a radial slider in each radial groove；
Four support columns are provided in T-type positioning core axle butt end outer circle, there are four claw tools；Along its bus side on the tapered face of conical sliding block
Method opens the sliding slot there are three trisection, and the radial through-hole there are three trisection is set on the same cross section in sleeve middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527752.3U CN208765636U (en) | 2018-09-18 | 2018-09-18 | Claw-type deep hole inner diameter measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527752.3U CN208765636U (en) | 2018-09-18 | 2018-09-18 | Claw-type deep hole inner diameter measuring device |
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| Publication Number | Publication Date |
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| CN208765636U true CN208765636U (en) | 2019-04-19 |
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ID=66136706
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821527752.3U Active CN208765636U (en) | 2018-09-18 | 2018-09-18 | Claw-type deep hole inner diameter measuring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115083A (en) * | 2018-09-18 | 2019-01-01 | 南京信息职业技术学院 | Claw-type deep hole inner diameter measuring device and measuring method |
| CN110986853A (en) * | 2019-11-22 | 2020-04-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Equipment for measuring size of tail nozzle of engine at multiple points |
| CN111161409A (en) * | 2019-12-27 | 2020-05-15 | 中国航空工业集团公司沈阳飞机设计研究所 | Aircraft support equipment verification system |
| CN112229305A (en) * | 2020-08-28 | 2021-01-15 | 南京瑞贻电子科技有限公司 | Detection device for magnetic ring production and processing and use method |
-
2018
- 2018-09-18 CN CN201821527752.3U patent/CN208765636U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115083A (en) * | 2018-09-18 | 2019-01-01 | 南京信息职业技术学院 | Claw-type deep hole inner diameter measuring device and measuring method |
| CN109115083B (en) * | 2018-09-18 | 2023-08-29 | 南京信息职业技术学院 | Claw type deep hole inner diameter measuring device and measuring method |
| CN110986853A (en) * | 2019-11-22 | 2020-04-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Equipment for measuring size of tail nozzle of engine at multiple points |
| CN111161409A (en) * | 2019-12-27 | 2020-05-15 | 中国航空工业集团公司沈阳飞机设计研究所 | Aircraft support equipment verification system |
| CN111161409B (en) * | 2019-12-27 | 2023-10-13 | 中国航空工业集团公司沈阳飞机设计研究所 | Aircraft guarantee equipment verification system |
| CN112229305A (en) * | 2020-08-28 | 2021-01-15 | 南京瑞贻电子科技有限公司 | Detection device for magnetic ring production and processing and use method |
| CN112229305B (en) * | 2020-08-28 | 2022-03-08 | 南京瑞贻电子科技有限公司 | Detection device for magnetic ring production and processing and use method |
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