CN104296715A - Parallel plane-table surveying mechanism and parallel plane-table surveying method - Google Patents
Parallel plane-table surveying mechanism and parallel plane-table surveying method Download PDFInfo
- Publication number
- CN104296715A CN104296715A CN201410522727.6A CN201410522727A CN104296715A CN 104296715 A CN104296715 A CN 104296715A CN 201410522727 A CN201410522727 A CN 201410522727A CN 104296715 A CN104296715 A CN 104296715A
- Authority
- CN
- China
- Prior art keywords
- guide pin
- guide
- displacement transducer
- pin bushing
- fixed head
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 65
- 238000005259 measurement Methods 0.000 claims abstract description 32
- 230000000875 corresponding Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 235000013312 flour Nutrition 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000000007 visual effect Effects 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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
Abstract
The invention discloses a parallel plane-table surveying mechanism and a parallel plane-table surveying method. The parallel plane-table surveying mechanism comprises a connection machined part, two guide rod fixing pieces, a guide sleeve component, a guide sleeve fixing plate, a cylinder, a measuring press plate and a displacement sensor. When the cylinder drives a power output rod of the cylinder to descend, the power output rod pushes the guide sleeve fixing plate to drive at least four guide sleeves to descend along at least four guide rods. The guide sleeve fixing plate drives the measuring press plate to descend and a contact of the displacement sensor to descend, and the displacement sensor outputs measurement data according to the descending amount of the contact of the displacement sensor. The parallel plane-table surveying mechanism combines the advantages of mechanical size measurement and displacement sensor measurement, can achieve planar measurement and meet the requirement for size measurement accuracy, is automatic, can be integrated in an automatic device, and can meet the high-speed automatic production requirement.
Description
Technical field
The present invention relates to a kind of automated machine class measurement mechanism, particularly relate to a kind of parallel flat measuring mechanism and parallel flat measuring method thereof, this parallel flat measuring mechanism is the outer profile size that can be used to measure the article such as the battery in electron trade, is the high precision measuring device that can be used for automation equipment.
Background technology
In existing automation equipment mechanical contact mechanism, because being slidably matched between mechanical parts exists gap value, this gap value directly affects the measuring accuracy of mechanism, causes existing contact size machine measuring accuracy not high, is difficult to meet product size measurement demand.
For meeting this dimensional measurement accuracy requirement, people adopt displacement transducer contact type measurement usually, and this mechanism solves the difficult point of measuring accuracy, also have drawback simultaneously, this displacement sensor mode can realize some measuring accuracy requirements, and the measuring accuracy in planar survey is not taken on a new look.
For realizing planar survey requirement, people use line laser structured light usually, find out the peak on two sides, realize the measuring accuracy requirement of this size, but due to line laser expensive, be difficult to extensive universal.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of parallel flat measuring mechanism and parallel flat measuring method thereof, it combines the advantage of mechanical type dimensional measurement and displacement sensor, planar survey can be realized and meet dimensional measurement accuracy requirement, also be automation equipment simultaneously, accessible site, in automation equipment, realizes high-speed automated Production requirement.
The present invention is achieved in that a kind of parallel flat measuring mechanism, and it comprises:
Connect workpiece;
First guide rod fixture, this connection workpiece is vertically fixed in its one end, and the other end offers the first through hole;
Second guide rod fixture, this connection workpiece is vertically fixed in its one end, and one end offers second through hole relative with this first through hole, and this second guide rod fixture and this first guide rod fixture be arranged in parallel;
Guide pin bushing assembly, it comprises:
At least four guide rods, each guide rod is vertically fixed between this first guide rod fixture and this second guide rod fixture; And
At least four guide pin bushings, itself and this at least four guide rod one_to_one corresponding, and be set on corresponding guide rod respectively;
Guide pin bushing fixed head, it to be set on these at least four guide pin bushings and to fix with these at least four guide pin bushings;
Cylinder, it is arranged on this first guide rod fixture, and the power output rod of this cylinder is fixed on this guide pin bushing fixed head through after this first through hole;
Measuring pressure plate, it is positioned at the relative both sides of this second guide rod fixture with this guide pin bushing fixed head, and this measuring pressure plate is fixed via this second through hole and this guide pin bushing fixed head by a web member; And
Displacement transducer, it is fixed on this first guide rod fixture, and the contact of this displacement transducer and this guide pin bushing fixed head are also fixed near a side contacts of this cylinder.
As the further improvement of such scheme, when its power output rod of this air cylinder driven declines, this power output rod promotes this guide pin bushing fixed head and drives these at least four guide pin bushings to decline along these at least four guide rods, this guide pin bushing fixed head drives this measuring pressure plate to decline, and also driving the contact of this displacement transducer to decline, this displacement transducer exports measurement data according to the slippage of the contact of this displacement transducer.
As the further improvement of such scheme, when its power output rod of this air cylinder driven rises, this power output rod pulls this guide pin bushing fixed head to drive these at least four guide pin bushings to rise along these at least four guide rods, this guide pin bushing fixed head drives this measuring pressure plate to rise, and the contact also driving this displacement transducer rises until, the measurement data of this displacement transducer is zero.
As the further improvement of such scheme, this parallel flat measuring mechanism also comprises displacement transducer fixed block, and this displacement transducer fixed block is fixed on this first guide rod fixture for this being positioned at sensor.Preferably, this displacement transducer fixed block is fixed on this first guide rod fixture on the side of this guide pin bushing fixed head, one end of this displacement transducer is fixed on this displacement transducer fixed block through this first through hole, and the other end of this displacement transducer is stuck on this first through hole.
As the further improvement of such scheme, this measuring pressure plate is grinding machine flour milling for measuring the surface of contact of measured object.
As the further improvement of such scheme, this measuring pressure plate has carried out the process of black hard oxidized surface.
As the further improvement of such scheme, this guide rod and this guide pin bushing adopt ball contact mechanism.
As the further improvement of such scheme, this guide pin bushing fixed head is fixed by interference fit and this at least four guide pin bushings.
The present invention also provides a kind of parallel flat measuring method, and it is applied in any one parallel flat measuring mechanism above-mentioned, and this parallel flat measuring method comprises the following steps:
Start this cylinder;
Its power output rod of this air cylinder driven declines, this power output rod promotes this guide pin bushing fixed head and drives these at least four guide pin bushings to decline along these at least four guide rods, this guide pin bushing fixed head drives this measuring pressure plate to decline, and also driving the contact of this displacement transducer to decline, this displacement transducer exports measurement data according to the slippage of the contact of this displacement transducer;
When its power output rod of this air cylinder driven rises, this power output rod pulls this guide pin bushing fixed head to drive these at least four guide pin bushings to rise along these at least four guide rods, this guide pin bushing fixed head drives this measuring pressure plate to rise, and the contact also driving this displacement transducer rises until, the measurement data of this displacement transducer is zero.
Parallel flat measuring mechanism of the present invention combines existing Machining Technology, mounting technology and automatic technology, in mechanical contact dimensional measurement, have following advantage:
1. parallel flat measuring mechanism measuring accuracy can reach ± 0.01mm, its measuring accuracy meets electrical type cell thickness dimension precision requirement, especially in mechanical contact type measurement sized device, belong to high-acruracy survey equipment, solve the difficult point that the measuring accuracy of original Mechanical Contact measuring equipment is not high;
2. parallel flat measuring mechanism realizes planar survey, can measure the distance between the peak needing the two sides measured.Relative to a measurement, what it realized is planar survey, namely measures the peak in this face and the distance of reference field, more accurate to the result measured;
3. parallel flat measuring mechanism integrated model is simple and practical, and compared to laser class measuring equipment, parallel flat measuring mechanism cost is very low, also can reach accurate measurement accuracy requirement, has very high cost performance;
4. parallel flat measuring mechanism physical life is long, and maintainability is good, can find out from the usage data at scene, the serviceable life of parallel flat measuring mechanism reaches 1,000,000 times, the design of parallel flat measuring mechanism is ingenious, and it is convenient to change, and changing damage part after reaching the life-span can reuse;
5. parallel flat measuring mechanism is the short automation equipment of Measuring Time, parallel flat measuring mechanism needs the automatic measurement realized under PLC programming in a device, Measuring Time can be controlled in 2s, saves a large amount of human time, can be used for the batch production of increasingly automated aspect.
Accompanying drawing explanation
The structural representation of the parallel flat measuring mechanism that Fig. 1 provides for better embodiment of the present invention.
Fig. 2 is the structural representation at another visual angle of parallel flat measuring mechanism in Fig. 1.
Fig. 3 is the structural representation of guide pin bushing assembly in Fig. 1.
Fig. 4 is the structural representation of measuring pressure plate in Fig. 1.
Fig. 5 is the assembling schematic diagram of guide pin bushing assembly and guide pin bushing fixed head in Fig. 1.
Fig. 6 is the assembling schematic diagram with the first guide rod fixture, the second guide rod fixture after combining in Fig. 5.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See also Fig. 1 and Fig. 2, the parallel flat measuring mechanism that better embodiment of the present invention provides comprises and connects workpiece 5, first guide rod fixture 8, second guide rod fixture 9, guide pin bushing assembly 1, guide pin bushing fixed head 6, cylinder 4, measuring pressure plate 2, displacement transducer 3, displacement transducer fixed block 7.
Guide pin bushing assembly 1 is for being elevated guiding use for measuring pressure plate 2, and guide pin bushing assembly 1 is precompressed gapless guide rod guide sleeve mechanism.As shown in Figure 3, guide pin bushing assembly 1 comprise at least four guide rods 11, with these at least four guide rods 11 at least four guide pin bushings 12 one to one.In the present embodiment, guide rod 11 all illustrates for 4 with the quantity of guide pin bushing 12, and each guide rod 11 is vertically fixed between this first guide rod fixture 8 and this second guide rod fixture 9.
The ripe module guide pin bushing assembly used selected by guide pin bushing assembly 1, precompressed gapless amount is had between this guide pin bushing assembly 1 inner guide 11, guide pin bushing 12, ball contact mechanism is adopted between guide rod 11, guide pin bushing 12, make guide rod 11, guide pin bushing 12 has precompressed friction force is little again, ensure measuring pressure plate 2 decline contact product time only produce the small phenomenon not affecting measuring accuracy, ensure that the accuracy requirement of measurement.
Incorporated by reference to Fig. 4, measuring pressure plate 2 is for contacting the peak in the face of required measurement products.Measuring pressure plate 2 is positioned at the relative both sides of this second guide rod fixture 9 with this guide pin bushing fixed head 6, and this measuring pressure plate 2 is fixed via this second through hole 91 and this guide pin bushing fixed head 6 by a web member 21.The material selection AL7035T6 of measuring pressure plate 2, this material destressing ensures the rear noresidue stress of processing.The surface of contact of measuring pressure plate 2 needs to use precision grinder flour milling, ensures that the flatness in this face is within 0-0.005mm, makes the measurement plane that this surface of contact becomes desirable, and measuring pressure plate 2 has carried out black hard oxidized surface treatment process simultaneously.
Displacement transducer 3 exports for the data that will measure, and the measuring accuracy of displacement transducer 3 is 0.003mm.The contact 31 of displacement transducer 3 contacts with guide pin bushing fixed head 6, and contact follows measuring pressure plate 2 to decline, and when without test product, measuring pressure plate 2 can contact the placement platform of measured object, and now displacement transducer 3 numerical value is set to zero-bit.
Cylinder 4 is elevated for driving measuring pressure plate 2.Cylinder 4 is arranged on the first guide rod fixture 8, and the power output rod of this cylinder 4 is fixed on this guide pin bushing fixed head 6 through after this first through hole 81.
Connecting workpiece 5 is connecting components volume assembly parts, makes composition parallel flat measuring mechanism as a whole.
Incorporated by reference to Fig. 5 and Fig. 6, guide pin bushing fixed head 6 is for the guide pin bushing 12 in fixing guide pin bushing assembly 1.Guide pin bushing fixed head 6 to be set on four guide pin bushings 12 and to fix with these four guide pin bushings 12.Guide pin bushing fixed head 6 is fixtures of guide pin bushing assembly 1.Guide pin bushing fixed head 6 is interference fit with coordinating of guide pin bushing assembly 1, this interference fit is joined for adopting high-accuracy grinding bedside edging, the dimensional accuracy of each fabrication hole is determined according to the concrete dimensional accuracy of associated guide pin bushing 12 external diameter, relative size status requirement between four holes is high, ensure that guide pin bushing assembly 1 does not come off and measuring pressure plate 2 can smooth rise and fall gapless.
Displacement transducer fixed block 7 is for fixed displacement sensor 3.In the present embodiment, this is positioned at sensor 3 and is fixed on this first guide rod fixture 8 by this displacement transducer fixed block 7.Particularly, this displacement transducer fixed block 7 is fixed on this first guide rod fixture 8 on the side of this guide pin bushing fixed head 6, one end of this displacement transducer 3 is fixed on this displacement transducer fixed block 7 through this mounting hole 82, and the other end of this displacement transducer 3 is stuck on this first through hole 81.Certain displacement transducer fixed block 7 can not be arranged, and displacement transducer 3 is directly fixed on this first guide rod fixture 8, and the contact 31 of this displacement transducer 3 is also fixing near a side contacts of this cylinder 4 with this guide pin bushing fixed head 6.Certainly, the first through hole 81 can communicate with mounting hole 82 and merge into same through hole.
This connection workpiece 5 is vertically fixed in one end of first guide rod fixture 8, and the other end offers the first through hole 81 and mounting hole 82.This connection workpiece 5 is vertically fixed in one end of second guide rod fixture 9, and one end offers second through hole 91 relative with this first through hole 81, and this second guide rod fixture 9 be arranged in parallel with this first guide rod fixture 8.
Parallel flat measures measuring accuracy: measured product is measuring accuracy at the measurement numerical value of any point of pressing plate surface of contact and the difference of actual value.The measuring accuracy of parallel flat measuring mechanism is ± 0.01mm: measured product at the absolute value of the measurement numerical value of any point of pressing plate surface of contact and the difference of actual value within 0-0.01mm.The measuring accuracy of parallel flat measuring mechanism requires high, and this precision is by measuring pressure plate, guide pin bushing fixed head, and the technique of guide pin bushing assembly and assembling guide pin bushing assembly ensures.
Assembly technology: guide pin bushing assembly 1 is precompressed gapless amount assembly, guide rod 11 and guide pin bushing 12 are combined, probably make measuring pressure plate 2 move to have some setbacks, affect the measuring accuracy of parallel flat measuring mechanism, this is had some setbacks by the assembling of two guide rod fixtures, 8,9 and four guide rods 11 to cause.
This parallel flat measurement mechanism is when applying, and its parallel flat measuring method comprises the following steps:
Start this cylinder 4;
This cylinder 4 drives its power output rod to decline, this power output rod promotes this guide pin bushing fixed head 6 and drives four guide pin bushings 12 to decline along these four guide rods 11, this guide pin bushing fixed head 6 drives this measuring pressure plate 2 to decline, and also driving the contact 31 of this displacement transducer 3 to decline, this displacement transducer 3 exports measurement data according to the slippage of the contact 31 of this displacement transducer 3;
When this cylinder 4 drives its power output rod to rise, this power output rod pulls this guide pin bushing fixed head 6 to drive four guide pin bushings 12 to rise along these four guide rods 11, this guide pin bushing fixed head 6 drives this measuring pressure plate 2 to rise, and also drive the contact 31 of this displacement transducer 3 to rise until, the measurement data of this displacement transducer 3 is zero.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a parallel flat measuring mechanism, is characterized in that: it comprises:
Connect workpiece;
First guide rod fixture, this connection workpiece is vertically fixed in its one end, and the other end offers the first through hole;
Second guide rod fixture, this connection workpiece is vertically fixed in its one end, and one end offers second through hole relative with this first through hole, and this second guide rod fixture and this first guide rod fixture be arranged in parallel;
Guide pin bushing assembly, it comprises:
At least four guide rods, each guide rod is vertically fixed between this first guide rod fixture and this second guide rod fixture; And
At least four guide pin bushings, itself and this at least four guide rod one_to_one corresponding, and be set on corresponding guide rod respectively;
Guide pin bushing fixed head, it to be set on these at least four guide pin bushings and to fix with these at least four guide pin bushings;
Cylinder, it is arranged on this first guide rod fixture, and the power output rod of this cylinder is fixed on this guide pin bushing fixed head through after this first through hole;
Measuring pressure plate, it is positioned at the relative both sides of this second guide rod fixture with this guide pin bushing fixed head, and this measuring pressure plate is fixed via this second through hole and this guide pin bushing fixed head by a web member; And
Displacement transducer, it is fixed on this first guide rod fixture, and the contact of this displacement transducer and this guide pin bushing fixed head are also fixed near a side contacts of this cylinder.
2. parallel flat measuring mechanism according to claim 1, it is characterized in that: when its power output rod of this air cylinder driven declines, this power output rod promotes this guide pin bushing fixed head and drives these at least four guide pin bushings to decline along these at least four guide rods, this guide pin bushing fixed head drives this measuring pressure plate to decline, and also driving the contact of this displacement transducer to decline, this displacement transducer exports measurement data according to the slippage of the contact of this displacement transducer.
3. parallel flat measuring mechanism according to claim 1, it is characterized in that: when its power output rod of this air cylinder driven rises, this power output rod pulls this guide pin bushing fixed head to drive these at least four guide pin bushings to rise along these at least four guide rods, this guide pin bushing fixed head drives this measuring pressure plate to rise, and the contact also driving this displacement transducer rises until, the measurement data of this displacement transducer is zero.
4. parallel flat measuring mechanism according to claim 1, is characterized in that: this parallel flat measuring mechanism also comprises displacement transducer fixed block, and this displacement transducer fixed block is fixed on this first guide rod fixture for this being positioned at sensor.
5. parallel flat measuring mechanism according to claim 4, it is characterized in that: this displacement transducer fixed block is fixed on this first guide rod fixture on the side of this guide pin bushing fixed head, one end of this displacement transducer is fixed on this displacement transducer fixed block through this first through hole, and the other end of this displacement transducer is stuck on this first through hole.
6. parallel flat measuring mechanism according to claim 1, is characterized in that: this measuring pressure plate is grinding machine flour milling for measuring the surface of contact of measured object.
7. parallel flat measuring mechanism according to claim 1, is characterized in that: this measuring pressure plate has carried out the process of black hard oxidized surface.
8. parallel flat measuring mechanism according to claim 1, is characterized in that: this guide rod and this guide pin bushing adopt ball contact mechanism.
9. parallel flat measuring mechanism according to claim 1, is characterized in that: this guide pin bushing fixed head is fixed by interference fit and this at least four guide pin bushings.
10. a parallel flat measuring method, it is applied in parallel flat measuring mechanism as in one of claimed in any of claims 1 to 9, it is characterized in that: this parallel flat measuring method comprises the following steps:
Start this cylinder;
Its power output rod of this air cylinder driven declines, this power output rod promotes this guide pin bushing fixed head and drives these at least four guide pin bushings to decline along these at least four guide rods, this guide pin bushing fixed head drives this measuring pressure plate to decline, and also driving the contact of this displacement transducer to decline, this displacement transducer exports measurement data according to the slippage of the contact of this displacement transducer;
When its power output rod of this air cylinder driven rises, this power output rod pulls this guide pin bushing fixed head to drive these at least four guide pin bushings to rise along these at least four guide rods, this guide pin bushing fixed head drives this measuring pressure plate to rise, and the contact also driving this displacement transducer rises until, the measurement data of this displacement transducer is zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522727.6A CN104296715A (en) | 2014-09-30 | 2014-09-30 | Parallel plane-table surveying mechanism and parallel plane-table surveying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522727.6A CN104296715A (en) | 2014-09-30 | 2014-09-30 | Parallel plane-table surveying mechanism and parallel plane-table surveying method |
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| Publication Number | Publication Date |
|---|---|
| CN104296715A true CN104296715A (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410522727.6A Pending CN104296715A (en) | 2014-09-30 | 2014-09-30 | Parallel plane-table surveying mechanism and parallel plane-table surveying method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547226A (en) * | 2015-12-23 | 2016-05-04 | 苏州博众精工科技有限公司 | Distance detection mechanism |
| CN105758352A (en) * | 2016-04-21 | 2016-07-13 | 苏州博众精工科技有限公司 | Measurement assembly |
| CN106225759A (en) * | 2016-08-25 | 2016-12-14 | 纳百川控股有限公司 | The measurement apparatus of new energy car battery cool-heat-exchanger flatness and system |
| CN114485525A (en) * | 2022-04-06 | 2022-05-13 | 杭州泰尚智能装备有限公司 | Gap detection device and implementation method thereof |
-
2014
- 2014-09-30 CN CN201410522727.6A patent/CN104296715A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547226A (en) * | 2015-12-23 | 2016-05-04 | 苏州博众精工科技有限公司 | Distance detection mechanism |
| CN105547226B (en) * | 2015-12-23 | 2018-06-05 | 博众精工科技股份有限公司 | It is a kind of apart from testing agency |
| CN105758352A (en) * | 2016-04-21 | 2016-07-13 | 苏州博众精工科技有限公司 | Measurement assembly |
| CN106225759A (en) * | 2016-08-25 | 2016-12-14 | 纳百川控股有限公司 | The measurement apparatus of new energy car battery cool-heat-exchanger flatness and system |
| CN106225759B (en) * | 2016-08-25 | 2019-02-12 | 纳百川控股有限公司 | The measuring device and system of new energy car battery cool-heat-exchanger flatness |
| CN114485525A (en) * | 2022-04-06 | 2022-05-13 | 杭州泰尚智能装备有限公司 | Gap detection device and implementation method thereof |
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Application publication date: 20150121 |