CN109405707A - A kind of device with micrometer detection pipe sleeve seal line position - Google Patents
A kind of device with micrometer detection pipe sleeve seal line position Download PDFInfo
- Publication number
- CN109405707A CN109405707A CN201811362296.6A CN201811362296A CN109405707A CN 109405707 A CN109405707 A CN 109405707A CN 201811362296 A CN201811362296 A CN 201811362296A CN 109405707 A CN109405707 A CN 109405707A
- Authority
- CN
- China
- Prior art keywords
- measuring head
- pipe sleeve
- fixing sleeve
- seal line
- mandril
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 25
- 238000009987 spinning Methods 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
Abstract
A kind of device with micrometer detection pipe sleeve seal line position, is equipped with workpiece positioning clamping mechanism and measurement executing agency；The workpiece positioning clamping mechanism includes left cutting ferrule, right cutting ferrule, positioning datum component, mandril, fixing sleeve and spinning component, the left cutting ferrule is assembled by helicitic texture and right cutting ferrule, positioning datum component one end is equipped with and the consistent internal conical surface of normal cone sealed fitting, the other end is contacted with mandril tail end, the mandril is placed in fixing sleeve, it is threadedly coupled mode and fixing sleeve assembles, be equipped with spinning component in the mandril other end；The measurement executing agency includes measuring head and scale set, the measuring head and fixing sleeve are equipped, and the scale set is sleeved on outside fixing sleeve, are threadedly coupled mode and fixing sleeve assembles, scale covers one end and contacts with measuring head, and driving measuring head can be covered by rotating scale and is moved left and right.The present invention realizes the accurate measurement of pipe sleeve part P value, has achieved the purpose that the rejection rate and production cost that reduce pipe sleeve part.
Description
Technical field
The present invention relates to a kind of detection device, especially a kind of device with micrometer detection pipe sleeve seal line position belongs to
In test, field of measuring technique.
Background technique
As shown in Fig. 1, a kind of pipe sleeve part 1 applied in precision instrument and equipment fluid pressure line, end position is
It is P in the ladder end face 1-1 distance with pipe sleeve part 1 after exterior arc surface, the pipe sleeve part 1 and the assembly of conical surface seal pipe fitting
Place forms pipe sleeve exterior arc surface and pipe fitting internal conical surface seal line X.Due in precision instrument and equipment fluid pressure line oil pressure compared with
Height, pipe sleeve part 1 generally use high-strength alloy steel material, while in order to guarantee the set tube components 1 and conical surface seal pipe fitting
Matching relationship, according to related technical requirements, the P value of the pipe sleeve part 1 is crucial control size, and the P value margin of tolerance is -0.12
To+0.12, therefore before pipe sleeve part 1 and the assembly of conical surface seal pipe fitting, need to the P value to pipe sleeve part 1 detect.
In the prior art, it for the test problems of pipe sleeve part P value, is difficult to be accurately positioned using traditional measurement method
The position of pipe sleeve exterior arc surface and pipe fitting internal conical surface seal line X, and go-no go gauge translucency test method is used, it can only be qualitative
Determine whether pipe sleeve part meets the requirements, due to cannot accurately measure the deviation of pipe sleeve part P value, especially in critical
It for the pipe sleeve part of state, easily causes to judge by accident, causes pipe sleeve part scrap rate to be promoted, to increase the system of pipe sleeve part
It makes or maintenance cost.
Summary of the invention
The present invention provides a kind of device with micrometer detection pipe sleeve seal line position, it is intended to by pipe sleeve part P value
Accurate measurement, achieve the purpose that reduce pipe sleeve part rejection rate and production cost.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of device with micrometer detection pipe sleeve seal line position, it is equipped with workpiece positioning clamping mechanism and measurement execution machine
Structure；The workpiece positioning clamping mechanism includes left cutting ferrule, right cutting ferrule, positioning datum component, mandril, fixing sleeve and spinning component,
The left cutting ferrule is sleeved on outside detected pipe sleeve part, and is connected through a screw thread structure and the assembly of right cutting ferrule, the positioning base
Prospective component one end is equipped with and the consistent internal conical surface of normal cone sealed fitting, after being detected Workpiece clamping, positioning datum
Component internal conical surface and detected workpiece end head position exterior arc surface form seal line X, the positioning datum component other end and mandril
Tail end contact, the mandril are placed in fixing sleeve, are threadedly coupled mode and fixing sleeve assembles, and are equipped with spinning in the mandril other end
Component；The measurement executing agency includes measuring head and scale set, and the measuring head and fixing sleeve are equipped, the scale set suit
It outside fixing sleeve, is assembled with right-handed thread connection type and fixing sleeve, scale covers one end and contacts with measuring head, can pass through rotation
Scale set driving measuring head moves left and right.
The above-mentioned device with micrometer detection pipe sleeve seal line position, the measuring head are equipped with measurement portion and driving portion, institute
Stating measurement portion is one group of axially extending measurement foot, and the driving portion is disk-like structure, is equipped with and scale in one end of driving portion
Cover the annular recess of cooperation；The fixing sleeve and measuring head matching part are equipped with one group of axially extending slot, the survey of measuring head
Foot-measuring penetrates in slot.
The above-mentioned device with micrometer detection pipe sleeve seal line position, slot on the measurement foot and fixing sleeve of the measuring head
Quantity is four.
The above-mentioned device with micrometer detection pipe sleeve seal line position, the fixing sleeve and right cutting ferrule are solid by the first screw
Fixed assembly, is arranged threaded hole on fixing sleeve.
The above-mentioned device with micrometer detection pipe sleeve seal line position, the positioning datum component is by references and top
Tight part composition, the references and top tight pieces are set with, and pass through top tight pieces end arcwall face and ejector pin contact.
The above-mentioned device with micrometer detection pipe sleeve seal line position, the mandril tail end is equipped with ladder transition face, in institute
It states and buffer spring is set between positioning datum component and the ladder transition face of mandril.
The above-mentioned device with micrometer detection pipe sleeve seal line position, the fixing sleeve outside are set with swivel nut, the swivel nut
Mode is threadedly coupled with fixing sleeve to assemble, and is fixed by the second screw locking.
The above-mentioned device with micrometer detection pipe sleeve seal line position, setting size is carved on scale set external cylindrical surface
Degree, and the point identification cooperated with size scale is set on the external cylindrical surface of measuring head driving portion.
The above-mentioned device with micrometer detection pipe sleeve seal line position, sets between the measuring head driving portion and right cutting ferrule
Set reset spring.
The above-mentioned device with micrometer detection pipe sleeve seal line position, sets between scale set and measuring head driving portion
Set left hand thread engagement structure.
It is detected using the P value that the device of the present invention with micrometer detection pipe sleeve seal line position carries out pipe sleeve part
When, detected workpiece is positioned by left cutting ferrule first, then mobile to workpiece direction by spinning components drive mandril, by positioning
Workpiece pre-tightening, the exterior arc surface and positioning datum component internal conical surface of pipe sleeve workpiece are formed seal line X, then led to by fiducial
It crosses rotating scale set driving measuring head to be moved to the left, when measuring head is moved to left end extreme position, reads measuring head driving portion
External cylindrical surface on point identification instruction numerical value, which is the deviation of P value, if the numerical value is in -0.12 to+0.12 range
It is interior, then determine to be detected workpiece qualification, if the numerical value not in -0.12 to+0.12 range, determines that being detected workpiece does not conform to
Lattice.It can be seen that the present invention by the accurate measurement to pipe sleeve part P value, has reached the rejection rate for reducing pipe sleeve part and life
Produce the purpose of cost.
Detailed description of the invention
Fig. 1 is pipe sleeve design of part schematic diagram；
Fig. 2 is the apparatus structure schematic diagram of the present invention with micrometer detection pipe sleeve seal line position；
Fig. 3 is the top view of Fig. 2；
Fig. 4 is A-A the schematic diagram of the section structure in Fig. 2；
Fig. 5 is positioning datum component structure diagram；
Fig. 6 is measuring head structural schematic diagram；
Fig. 7 is B-B the schematic diagram of the section structure in Fig. 6；
Fig. 8 is fixing sleeve structural schematic diagram；
Fig. 9 is C-C the schematic diagram of the section structure in Fig. 8；
Figure 10 is first embodiment of the invention operation principle schematic diagram；
Figure 11 is second embodiment of the invention structural schematic diagram；
Figure 12 is second embodiment of the invention operation principle schematic diagram.
Each list of reference numerals in figure are as follows: 1, pipe sleeve part, 1-1, ladder end face, 2, left cutting ferrule, 3, measuring head, 3-1, measurement
Portion, 3-2, driving portion, 3-3, annular recess, 4, positioning datum component, 4-1, references, 4-2, top tight pieces, 5, buffering elastic
Spring, the 6, first screw, 7, right cutting ferrule, 8, scale set, 9, fixing sleeve, 9-1, slot, 9-2, threaded hole, 10, swivel nut, 11, second
Screw, 12, mandril, 13, spinning component, 14, reset spring.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the invention will be further described.
Referring to Fig. 2, Fig. 3, a kind of device with micrometer detection pipe sleeve seal line position of the present invention, it is equipped with work
Part positioning and clamping mechanism and measurement executing agency；The workpiece positioning clamping mechanism includes left cutting ferrule 2, right cutting ferrule 7, positioning datum
Component 4, mandril 12, fixing sleeve 9 and spinning component 13, the left cutting ferrule 2 is sleeved on detected 1 outside of pipe sleeve part, and passes through
Screw connection structure and right cutting ferrule 7 assemble, and described 4 one end of positioning datum component is equipped with consistent with normal cone sealed fitting
Internal conical surface, after being detected Workpiece clamping, 4 internal conical surface of positioning datum component and detected workpiece end head position exterior arc surface
Seal line X is formed, 4 other end of positioning datum component is contacted with 12 tail end of mandril, and the mandril 12 is placed in fixing sleeve 9, mandril
12 are threadedly coupled mode and the assembly of fixing sleeve 9, are equipped with spinning component 13 in 12 other end of mandril；The measurement executing agency packet
Measuring head 3 and scale set 8 are included, the measuring head 3 and fixing sleeve 9 are equipped, and the scale set 8 is sleeved on 9 outside of fixing sleeve, scale
Set 8 is assembled with right-handed thread connection type and fixing sleeve 9, and scale covers 8 one end and contacts with measuring head 3, can cover 8 by rotating scale
Driving measuring head 3 moves left and right.
Referring to Fig. 2, Fig. 6, Fig. 7, in the device 2 of the present invention with micrometer detection pipe sleeve seal line position, institute
It is one group of axially extending measurement foot, the drive that measuring head 3, which is stated, equipped with measurement portion 3-1 and driving portion 3-2, the measurement portion 3-1
Dynamic portion 3-2 is disk-like structure, the annular recess 3-3 with 8 cooperation of scale set is equipped in one end of driving portion 3-2, in order to guarantee
Workpiece can be dismounted smoothly after detection, first embodiment of the invention are as follows: measuring head 3 driving portion 3-2 and right cutting ferrule 7 it
Between be arranged reset spring 14.
Referring to Fig. 2, Fig. 4, Fig. 6, Fig. 7, Fig. 8, Fig. 9, pipe sleeve seal line position is detected with micrometer of the present invention
Device 2 in, the fixing sleeve 9 is equipped with one group of axially extending slot 9-1, the measurement of measuring head 3 with measuring head matching part
It wears in slot 9-1；Slot 9-1 quantity is four on the measurement foot and fixing sleeve 9 of the measuring head 3；The fixing sleeve 9
With right cutting ferrule 7 by 6 fixing assembling of the first screw, threaded hole 9-2 is set on fixing sleeve 9.
Referring to Fig. 2, Fig. 5, in the device of the present invention with micrometer detection pipe sleeve seal line position, the positioning
Fiducial 4 is made of references 4-1 and top tight pieces 4-2, and the references 4-1 and top tight pieces 4-2 are set with, and is passed through
Top tight pieces 4-2 end arcwall face is contacted with mandril 12.
Referring to Fig. 2, in the device of the present invention with micrometer detection pipe sleeve seal line position, 12 tail of mandril
End is equipped with ladder transition face, and buffer spring 5 is arranged between the positioning datum component 4 and the ladder transition face of mandril 12；Institute
It states suit swivel nut 10, the swivel nut 10 outside fixing sleeve 9 to be threadedly coupled mode with fixing sleeve 9 and assemble, and passes through the second screw
11 lockings are fixed.
Referring to Fig. 3, in the device of the present invention with micrometer detection pipe sleeve seal line position, in the scale set
Size scale is set on 8 external cylindrical surfaces, and is arranged and size scale cooperation on the driving portion 3-2 external cylindrical surface of measuring head 3
Point identification.
Referring to Figure 11, Figure 12, the device of the present invention with micrometer detection pipe sleeve seal line position, in order to guarantee to examine
Workpiece can be dismounted smoothly after survey, second embodiment of the invention are as follows: in the driving portion 3-2 of scale set 8 and measuring head 3
Between be arranged left hand thread engagement structure.
Referring to Fig. 1 to Figure 10, the device of the present invention with micrometer detection pipe sleeve seal line position, scale covers outer circle
Size scale determines by the following method on cylinder: the first step, calibrates the O point position line, takes a standard pipe set exemplar, and by work
Standard workpiece is clamped and is positioned by part positioning and clamping mechanism, then rotating scale set 8, and driving measuring head 3 is moved to the left, and works as measuring head
3 when being moved to left end extreme position, and point identification corresponding position is that size is carved on the driving portion 3-2 external cylindrical surface of measuring head 3
Spend 0 line；Second step, taking a P value dimensional discrepancy is -0.12 pipe sleeve workpiece, and it is fixed to be clamped by workpiece positioning clamping mechanism
Position, then rotating scale set 8, drives measuring head 3 to be moved to the left, when measuring head 3 is moved to left end extreme position, measuring head 3
Driving portion 3-2 external cylindrical surface on point identification corresponding position be -0.12 line of size scale；Third step takes a P value size
The pipe sleeve workpiece that deviation is+0.12, is clamped positioning by workpiece positioning clamping mechanism, then rotating scale set 8, driving measurement
First 3 are moved to the left, when measuring head 3 is moved to left end extreme position, directional beacon on the driving portion 3-2 external cylindrical surface of measuring head 3
Knowing corresponding position is+0.12 line of size scale；4th step divides distance between 0 line and -0.12 line and+0.12 line equally several
Equal portions, and identify respective value.Pipe sleeve zero is carried out using the device of the present invention with micrometer detection pipe sleeve seal line position
When the P value detection of part 1, detected Workpiece clamping can be positioned by workpiece positioning clamping mechanism first, then carved by rotation
8 driving measuring head 3 of degree set is moved to the left, and when measuring head 3 is moved to left end extreme position, reads the driving portion 3-2 of measuring head 3
The numerical value that point identification indicates on external cylindrical surface, which is the deviation of P value, if the numerical value is in -0.12 to+0.12 range
It is interior, then determine to be detected workpiece qualification, if the numerical value not in -0.12 to+0.12 range, determines that being detected workpiece does not conform to
Lattice.
Claims (10)
1. it is a kind of with micrometer detection pipe sleeve seal line position device, characterized in that it be equipped with workpiece positioning clamping mechanism and
Measure executing agency；The workpiece positioning clamping mechanism includes left cutting ferrule (2), right cutting ferrule (7), positioning datum component (4), mandril
(12), fixing sleeve (9) and spinning component (13), the left cutting ferrule (2) is sleeved on outside detected pipe sleeve part (1), and passes through
Screw connection structure and right cutting ferrule (7) are assembled, and described positioning datum component (4) one end is equipped with and normal cone sealed fitting one
The internal conical surface of cause, after being detected Workpiece clamping, outside positioning datum component (4) internal conical surface and detected workpiece end head position
Arc surface forms seal line X, and positioning datum component (4) other end is contacted with mandril (12) tail end, and the mandril (12) is placed in solid
In fixed set (9), mandril (12) is threadedly coupled mode and fixing sleeve (9) are assembled, and is equipped with spinning component in mandril (12) other end
(13)；The measurement executing agency includes measuring head (3) and scale set (8), and the measuring head (3) and fixing sleeve (9) are equipped, institute
It states scale set (8) to be sleeved on outside fixing sleeve (9), scale set (8) is threadedly coupled mode and fixing sleeve (9) are assembled, scale set
(8) one end is contacted with measuring head (3), measuring head (3) can be driven to move left and right by rotating scale set (8).
2. the device according to claim 1 with micrometer detection pipe sleeve seal line position, characterized in that the measuring head
(3) it is equipped with measurement portion (3-1) and driving portion (3-2), the measurement portion (3-1) is one group of axially extending measurement foot, the drive
Dynamic portion (3-2) is disk-like structure, and the annular recess (3-3) cooperated with scale set (8) is equipped in one end of driving portion (3-2)；Institute
State fixing sleeve (9) and measuring head matching part and be equipped with one group of axially extending slot (9-1), the measurement of measuring head (3) wear into
In slot (9-1).
3. the device according to claim 2 with micrometer detection pipe sleeve seal line position, characterized in that the measuring head
(3) slot (9-1) quantity is four on measurement foot and fixing sleeve (9).
4. the device according to claim 1 or 2 or 3 with micrometer detection pipe sleeve seal line position, characterized in that described
Threaded hole (9-2) is arranged on fixing sleeve (9) by the first screw (6) fixing assembling in fixing sleeve (9) and right cutting ferrule (7).
5. the device according to claim 4 with micrometer detection pipe sleeve seal line position, characterized in that the positioning base
Prospective component (4) is made of references (4-1) and top tight pieces (4-2), the references (4-1) and top tight pieces (4-2)
Suit, is contacted by top tight pieces (4-2) end arcwall face with mandril (12).
6. the device according to claim 5 with micrometer detection pipe sleeve seal line position, characterized in that the mandril
(12) tail end is equipped with ladder transition face, is arranged between the positioning datum component (4) and the ladder transition face of mandril (12) slow
Rush spring (5).
7. the device according to claim 6 with micrometer detection pipe sleeve seal line position, characterized in that the fixing sleeve
(9) outside is set with swivel nut (10), and the swivel nut (10) is assembled with fixing sleeve (9) mode of being threadedly coupled, and passes through the second screw
(11) locking is fixed.
8. the device according to claim 7 with micrometer detection pipe sleeve seal line position, characterized in that in the scale
Size scale is set on set (8) external cylindrical surface, and setting is carved with size on the driving portion of measuring head (3) (3-2) external cylindrical surface
Spend the point identification of cooperation.
9. the device according to claim 8 with micrometer detection pipe sleeve seal line position, characterized in that in the measurement
Reset spring (14) are set between the driving portion (3-2) and right cutting ferrule (7) of head (3).
10. the device according to claim 8 with micrometer detection pipe sleeve seal line position, characterized in that at the quarter
Left hand thread engagement structure is set between degree set (8) and the driving portion (3-2) of measuring head (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811362296.6A CN109405707A (en) | 2018-11-15 | 2018-11-15 | A kind of device with micrometer detection pipe sleeve seal line position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811362296.6A CN109405707A (en) | 2018-11-15 | 2018-11-15 | A kind of device with micrometer detection pipe sleeve seal line position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109405707A true CN109405707A (en) | 2019-03-01 |
Family
ID=65473396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811362296.6A Pending CN109405707A (en) | 2018-11-15 | 2018-11-15 | A kind of device with micrometer detection pipe sleeve seal line position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109405707A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567343A (en) * | 2019-09-27 | 2019-12-13 | 内蒙古第一机械集团股份有限公司 | Distance measuring method |
| CN111707164A (en) * | 2020-06-01 | 2020-09-25 | 南京瑞杜新材料科技有限公司 | Precision measurement contrast device for front and rear sizes of sapphire during cutting |
| CN112945157A (en) * | 2019-12-11 | 2021-06-11 | 中国航发商用航空发动机有限责任公司 | Measuring device and measuring method for parts in deep hole |
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| GB762244A (en) * | 1953-07-30 | 1956-11-28 | Sheffield Corp | Improvements in or relating to gauge for threads |
| US5038600A (en) * | 1989-11-20 | 1991-08-13 | Military Standards Corporation | Gage and method for measuring the X-dimension of hydraulic tube fittings |
| CN201561717U (en) * | 2009-12-28 | 2010-08-25 | 天津欧波精密仪器股份有限公司 | Special testing equipment for axial relative size of step shaft |
| CN201964853U (en) * | 2010-12-02 | 2011-09-07 | 贵州航太精密制造有限公司 | Measuring device for sealing inner conical surface of tube union |
| CN107202528A (en) * | 2017-06-26 | 2017-09-26 | 中国人民解放军第五七二工厂 | A kind of flareless pipe joint termination dimension measuring device |
| CN209399891U (en) * | 2018-11-15 | 2019-09-17 | 中国人民解放军第五七二一工厂 | A kind of device with micrometer detection pipe sleeve seal line position |
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2018
- 2018-11-15 CN CN201811362296.6A patent/CN109405707A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB762244A (en) * | 1953-07-30 | 1956-11-28 | Sheffield Corp | Improvements in or relating to gauge for threads |
| US5038600A (en) * | 1989-11-20 | 1991-08-13 | Military Standards Corporation | Gage and method for measuring the X-dimension of hydraulic tube fittings |
| CN201561717U (en) * | 2009-12-28 | 2010-08-25 | 天津欧波精密仪器股份有限公司 | Special testing equipment for axial relative size of step shaft |
| CN201964853U (en) * | 2010-12-02 | 2011-09-07 | 贵州航太精密制造有限公司 | Measuring device for sealing inner conical surface of tube union |
| CN107202528A (en) * | 2017-06-26 | 2017-09-26 | 中国人民解放军第五七二工厂 | A kind of flareless pipe joint termination dimension measuring device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567343A (en) * | 2019-09-27 | 2019-12-13 | 内蒙古第一机械集团股份有限公司 | Distance measuring method |
| CN112945157A (en) * | 2019-12-11 | 2021-06-11 | 中国航发商用航空发动机有限责任公司 | Measuring device and measuring method for parts in deep hole |
| CN112945157B (en) * | 2019-12-11 | 2023-02-24 | 中国航发商用航空发动机有限责任公司 | Measuring device and measuring method for parts in deep hole |
| CN111707164A (en) * | 2020-06-01 | 2020-09-25 | 南京瑞杜新材料科技有限公司 | Precision measurement contrast device for front and rear sizes of sapphire during cutting |
| CN111707164B (en) * | 2020-06-01 | 2021-10-08 | 南京瑞杜新材料科技有限公司 | Precision measurement contrast device for front and rear sizes of sapphire during cutting |
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