CN102788841B - Multipurpose analog roller for verifying roller eddy current inspection instrument and manufacturing method - Google Patents
Multipurpose analog roller for verifying roller eddy current inspection instrument and manufacturing method Download PDFInfo
- Publication number
- CN102788841B CN102788841B CN201210293441.6A CN201210293441A CN102788841B CN 102788841 B CN102788841 B CN 102788841B CN 201210293441 A CN201210293441 A CN 201210293441A CN 102788841 B CN102788841 B CN 102788841B
- Authority
- CN
- China
- Prior art keywords
- roll
- roller
- multiplex
- alloy steel
- eddy current
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a multipurpose analog roller for verifying a roller eddy current inspection instrument and a manufacturing method of the multipurpose analog roller. The roller consists of multiple alloy steel parts made from different materials and is hollow. An arch surface of each alloy steel part is identical in semidiameter and arc length, and is axially arranged along the roller in an equidirection manner; and each arc surface is provided with artificial scores in an axis direction. The manufacturing method comprises the following steps: taking materials, manufacturing the hollow roller, assembling, rounding, scoring, setting a selected slot, assembling end plates, and coming into serve after debugging. With the adoption of the multipurpose analog roller for verifying the roller eddy current inspection instrument and the manufacturing method of the multipurpose analog roller, inconvenience of live debugging of a single-material analog roller and the existed error are overcome, a relation type database of material, linear speed and gain is constructed by the analog roller, so that the roller eddy current inspection instrument still works under a monitored state, the obtained parameters are relatively synchronous to the materials and the linear speed, and the reliable guarantee is provided for the authenticity of the online result of detection of the instrument; and one roller is capable of finishing the detection and verification for the rollers made from various materials by the roller eddy current inspection instrument, so that the working efficiency is significantly improved.
Description
Technical field
The invention belongs to roll eddy current defectoscope calibration technology, relate to roll eddy current defectoscope verification simulation roller,
Multiplex simulation roller of one used and preparation method thereof is verified in particular to roll eddy current defectoscope.
Background technology
In Rolling production, even if the scar defect of roll is present in the microcrack on roll body or surface, all likely cause quick-fried roller, and directly jeopardize the safety of the person and equipment, must stop production time serious and carry out accident treatment.Therefore, code requirement regularly must be detected a flaw and repairs by breaker roll.Think in the industry at present, eddy current flaw detec can not contact roller surface, automatically completes the detection of scar defect, and synchronously can carry out with grinding roller reparation again, and therefore have more advance compared with other flaw detection means, the application in iron and steel enterprise is also more and more wider.But, find in application, the result of detection of roll eddy current defectoscope, also different relevant from the linear velocity of probe movement and the material of institute's detection roll.When probe portable cord velocity variations (also can be equivalent to roll surface speed change), the signal amplitude that same crackle shows is different; And the tested roll to unlike material, use a same instrument detection, also can draw Different Results.These differences affect the correctness that flaw detection crackle value judges undoubtedly.In order to correct described difference, simulation roller breaker roll eddy current flaw detec is adopted in the industry to verify.This simulation roller is ferromagnetism material, and roll body cross section diameter is about 40mm, and the indentation of the roll surface dark 0.2mm of manual manufacture one trace vertically.Using eddy current flaw detec to simulating the flaw detection signal amplitude of roller indentation as reference, can to temperature variation, changes of magnetic field during instrument onsite application, and even the change that brings of environment throughout the year, periodic check is carried out to instrument, with revise eddy current flaw detec to spy roll injury and fissure signal amplitude, breaker roll crackle size makes realistic judgement as far as possible.The traditional analog roller of prior art is taken single material and is made, and it only can carry out roll surface speed simulation to the roll of certain material, and can not be the roll do simulation reference of various material.Particularly in same place, when eddy current flaw detec must detect the roll of multiple unlike material, the simulation roller tester of the material adopting this single just lacks the comparability of reference, affects the accuracy that crackle situation judging hindered by various material roll.More than have problems the scientific and technical personnel in the industry that always puzzle.
Summary of the invention
The present invention proposes a kind of roll eddy current defectoscope and verify multiplex simulation roller and preparation method thereof, object exists
Complete the reference of roll eddy current defectoscope to various material roll and rotational line speed thereof in the multiplex simulation roller described in utilization to verify, realize a roller multiplex, effectively to solve above-mentioned existing problems.
One of technical solution of the present invention:
Multiplex simulation roller alleged by the present invention, be provided with roll shaft and bearing thereof and roll body support, roll shaft during use
One end is connected with motor shaft, and described roll body is made up of the alloy steel piece of multiple unlike material, and roll body is hollow shape; The arc surface of described multiple unlike material alloy steel piece is same radius, arc surface with arc length, and etc. ground, orientation axially arrange along roll body; Centre position on the arc surface of described each unlike material alloy steel piece, the axis direction along roll body is provided with the artificial indentation that the degree of depth is 0.2mm.
The two ends of described roll body are respectively provided with A end plate and B end plate, and wherein A end plate is split type, are made up of outer toroid and interior plectane, and the anchor ring of outer toroid are provided with one section of hand adjustment and select groove to lack, groove lack that width is about described arc surface transverse width 1/3rd.
The two ends exposure of described roll shaft is outside end plate, and roll shaft exposure is connected by universal joint in one end of split type end plate with motor shaft; Described motor is threephase asynchronous or for AC servo motor or for direct current generator or for stepper motor.
Multiple unlike material alloy steel pieces of described formation multiplex simulation roll body are 2-4 part.
Described multiplex simulation roller is towards the side of motor, and be provided with the roll surface extension with described alloy steel piece with same curvature, roll surface extension is positioned at the top of electric machine casing.
Described roll body support is provided with proximity switch, proximity switch and motor homonymy, and aims at the outer toroid of A end plate by the pilot hole on roll body support.
Technical solution two of the present invention:
Alleged by the present invention, the concrete steps of multiplex simulation roller method for making are as follows:
(1) external diameter and the length of multiplex simulation roller is determined; Roll shaft and bearing seat are set; Choose cut lengths
The alloy steel piece of the 2-4 block unlike material that specification is consistent, is all machined to that upper surface is arc surface, bottom surface is provided with a raised line, each arc surface for the roll shaft heart for the same radius in the center of circle, same to arc length: each raised line is positioned at bottom surface position placed in the middle.
(2) hollow roll be arranged within multiplex simulation roller is made; This hollow roll is the basic body of roll of multiplex simulation roller, and hollow roll two ends add shrouding; Cut hollow roll again and intend the roll surface installing unlike material alloy steel piece position and the shrouding connected thereof, the position placed in the middle of shrouding section is provided with low groove, according to the number of unlike material alloy steel piece on shrouding, is provided with multiple mounting hole etc. orientation.
(3) roll body of multiplex simulation roller is assembled, the unlike material alloy steel piece of step () is axially placed in the cut corresponding site of hollow roll roll surface along roll body, and the low groove that the raised line of unlike material alloy steel piece bottom surface and the position placed in the middle of shrouding section are provided with matches; Again by the mounting hole on two end-plates, with socket head cap screw, both reverse locks are fixed it.
(4) by the roll surface of the multiplex simulation roller after the assembling of cylindrical grinder rounding, this roll surface is made up of jointly variant material alloy steel piece arc surface and the alternate hollow roll roll surface without cutting wherein.
(5), on the roll surface after rounding, with molybdenum filament in the arc surface mean line of each material alloy steel piece, the axis direction along roll body carries out artificial indentation, and width of nick is 0.2mm.
(6) annular end plate is installed additional at roll body two ends, one piece of A end plate is wherein the split type end plate be made up of outer toroid and interior plectane, and the anchor ring of outer toroid is processed with one section of hand adjustment and selects groove to lack, and groove is lacked, and width is set as alloy steel piece arc surface transverse width 1/3rd; Roll shaft end is stretched out outside end plate, is prepared into hollow multiplex simulation roller.
Beneficial effect of the present invention
(1) the present invention can use multiplex simulation roller to debug roll eddy current defectoscope, and set up " material/linear velocity/gain " relevant database, the process of Database is actual is the process that breaker roll eddy current flaw detec is demarcated, this procedure avoids the inconvenience of instrument being debugged with on-the-spot online roll, it also avoid traditional single material simulation roller, or carry out the imperfection of system check or the error of introducing with simulation roller prepared by the material that scene has nothing to do completely, described database just can overcome the flaw detection signal difference that the difference because of roll change of line speed and material is introduced.This superiority is the ARTIFICIAL CRACK flaw detection that the present invention passes through to specify multiplex simulation roller material alloy steel piece, when roll surface speed increases progressively and affects Signal of Cracks amplitude, by adjusting the gain of instrument, the modified value of instrument parameter is obtained when obtaining signal amplitude and being constant, again further with linear velocity increasing sequence under specific materials, obtain the gain sequence of the correspondence of instrument, thus set up " material/linear velocity/gain " relevant database.When using at the scene, robotization roll eddy current defectoscope can record and according to the linear velocity of on-the-spot roller surface, from database, taking out corresponding yield value to instrument parameter carrying out initialization at first, revising during the course, thus eliminate the impact of linear speed change on result of detection.Certainly this will select corresponding material item in database when known roll material, corresponding modified value is obtained from the corresponding linear speed corresponding to database corresponding material item, continuous refreshing instrument parameter, make instrument always work in monitored state, make the parameter of instrument and material and linear velocity keep related synchronization.The present invention is that roll eddy current defectoscope line flaw detection provides reliable guarantee.
(2) the present invention is specially designed is indispensable assembly in order to select the hand adjustment of roll body roll surface unlike material alloy steel piece to select groove to lack with proximity switch, because roll surface has various material and artificial slight crack, when simulating roller and rotating, the signal that all Signal of Cracks comprise caused by two kinds of material seams all will enter Eddy current detector, because this groove lacks and roll surface synchronous axial system, and groove lack point to material to be selected all the time, just can be lacked by groove for this reason and externally export a selection square-wave signal with proximity switch, utilize this square-wave signal can in the Signal of Cracks that roll surface is numerous, take out desired signal, for the verification of roll eddy current defectoscope is used, the present invention is made to be able to effective enforcement.
(3) preparation of roll body of the present invention have drawn from service field run out of working lining after scrap roller, therefore to the flaw detection of on-the-spot roll, there is actual directive significance; Achieve and utilize a roller, just can complete roll eddy current defectoscope and the flaw detection of various material roll is verified, significantly improve work efficiency.
accompanying drawing explanation
Accompanying drawing 1 is the embodiment that the present invention forms with four kinds of material alloy steel pieces, the horizontal section structural representation of position shrouding end;
Accompanying drawing 2 is the contour structures schematic diagram of the embodiment of the present invention;
Accompanying drawing 3 is the structural representation of the split type A end plate of the present invention
Accompanying drawing 4 is placed in roll stand for the present invention and the structural representation be connected with motor;
Accompanying drawing 5 is the display figure of roll eddy current defectoscope to the multiplex simulation roller flaw detection of the present invention.
Embodiment
As shown in Figure 1,
Multiplex simulation roller 1 alleged by the present invention, is provided with roll shaft 11 and bearing 12 thereof, and its roll body is made up of the alloy steel piece 2 of multiple unlike material; Be provided with in roll body in the hollow roll 3(figure in order to alleviate roll body weight and done cutting on request), mark 31 is hollow roll inwall (dotted line), and hollow roll outer wall roll surface 32, forms multiplex simulation roller roll surface altogether with the arc surface 21 of multiple unlike material alloy steel piece.Four kinds of material alloy steel pieces of the present embodiment have drawn to serve iron and steel enterprise scene be finished working lining later scrap roller, be respectively chromium 2 roller, (iron and steel enterprise names roll according to containing Cr amount usually for chromium 3 roller, chromium 4 roller, chromium 5 roller, chromium 5 roller is claimed as claimed chromium 2 roller when reaching about 2% containing Cr amount, when reaching 5% content) or other material, to make the unlike material alloy steel piece of multiplex simulation roller more realistic.According to the size requirements of prepared simulation roller, fetch length and width, thick size is respectively 100 mm, 100 mm, 20 mm alloy blocks.Every block alloy steel piece being all machined to upper surface is that arc surface 21(is as the criterion with same roll body 158 mm external diameter), bottom surface is provided with a raised line 22.The each alloy steel piece processed axially is placed in the cut corresponding site of hollow roll roll surface along roll body, and the low groove that the raised line of alloy steel piece bottom surface and shrouding section are provided with matches.Again by the mounting hole 34 on shrouding 33, with screw 35, both are fixed it.
Separately, on the centre of the arc surface of each unlike material alloy steel piece, the axis direction along roll body is provided with the artificial indentation 4 that the degree of depth is 0.2mm.
As shown in Figure 2,3,
Described each alloy steel piece 2 is for waiting azimuth distribution, and described barrel length is 98 mm, two ends be provided with A end plate 13, B end plate 14(hollow roll shrouding interior, invisible in figure).A end plate is split type, be made up of outer toroid 131 and interior plectane 132, outer toroid and interior plectane joint connect with concavo-convex table top, so that the tight outer toroid of inner circle latch closure combined pressure, interior annulus there is locking gong nail, can be fixed after annular groove outside lacks selected roll surface material.The anchor ring of outer toroid being provided with one section of hand adjustment selects groove to lack 15.When needs rotation outer toroid makes selection groove lack 15 certain bulk matter alloy steel piece block of aligning, can unclamp interior annulus screw, hand adjustment selects groove scarce rotation outer toroid to put in place, then locks.
As shown in Figure 4,
Multiplex simulation roller 1 is provided with combined bracket 5, and the bottom of this bracket is loudspeaker opening shape, to be placed on the roll of actual measurement.220V three phase electric machine 6(comprises frequency converter) side of bracket is arranged on by bolt, this lateral bracket is also provided with proximity switch 7.Separately, above motor, be also provided with the roll surface extension 8 arranged side by side with multiplex simulation roller, to tackle the needs of the wider probe displacement of eddy current flaw detec.The arc surface representing this roll surface extension with solid line in figure, with coplanar with multiplex simulation roller roll surface and coincide, have below roll surface extension and regulates gong nail (not shown) for regulating its roll surface height.
As shown in Figure 5,
When top square-wave signal 91 shown in figure lacks debugging for not making A angle head cylindrical annular groove, the signal that proximity switch produces when multiplex simulation roller rotates.The signal 92 that produces after the square-wave signal of below chooses certain material for A angle head cylindrical annular groove lacks.Selecting groove to lack due to hand adjustment is the artificial indentation place aiming at certain material alloy steel piece on roll body, and therefore in the square-wave signal of below, the signal occurred is the artificial slight crack signal value 10 of multiplex simulation roller in certain linear velocity, certain material alloy steel piece 0.2mm degree of depth.Other signal in figure or be the seam signal etc. of unlike material alloy steel piece, is the junk do not chosen.Artificial indentation signal 10 in above-mentioned square wave is that roll eddy current defectoscope is to actual measurement roll calibration reference signal.
After the present invention completes, formal when eddy current probe comes into operation, except will selection be adjusted
It is upper outside that groove lacks a certain material of specifying of the multiplex simulation roller of aligning, also need roll surface is static do not rotate time, " zeroing " reference signal is done once to the unartificial scored areas of selected material roll surface, so that all signals detected are all by comparing acquisition on this " zeroing " basis after simulation roller rotates." zeroing " good simulation roller under the environment of specifying with eddy current flaw detector with the use of.Such as, with the artificial indentation signal checking instrument of Cr5 roller material, so first, eddy current probe is aimed at unartificial scored areas in Cr5 material and do eddy current zeroing (namely selecting reference point), simulation roller is allowed to rotate by required linear velocity again, in rotary course, square wave plays a part to select signal, can there is changes in amplitude according to roll surface speed change in artificial indentation signal, record the parameter revising these changes, instrument is just corrected.In flaw detection, instrument and meter for automation can decide the selection of parameter according to roller surface linear velocity at the scene.In addition, as long as lack aligning unlike material alloy steel piece position by changing annular groove outside, by above-mentioned same method, an only multiplex simulation roller, several roll materials that roller eddy current flaw detec just can complete scene is conventional simultaneously complete verifying work.
To sum up, the present invention can reach expection invention.
Claims (8)
1. roll eddy current defectoscope verifies multiplex simulation roller, and be provided with roll body, roll shaft and bearing thereof and roll body support, one end of roll shaft is connected with motor shaft, it is characterized in that: described roll body is made up of the alloy steel piece of multiple unlike material, and roll body is hollow shape; The arc surface of described multiple unlike material alloy steel piece is same radius, arc surface with arc length, and etc. ground, orientation axially arrange along roll body; Centre position on the arc surface of described each unlike material alloy steel piece, the axis direction along roll body is provided with the artificial indentation that the degree of depth is 0.2mm.
2. roll eddy current defectoscope according to claim 1 verifies multiplex simulation roller, it is characterized in that: the two ends of described roll body are respectively provided with A end plate and B end plate, wherein A end plate is split type, be made up of outer toroid and interior plectane, and the anchor ring of outer toroid is provided with one section of hand adjustment and selects groove to lack, groove lack that width is described arc surface transverse width 1/3rd.
3. roll eddy current defectoscope according to claim 2 verifies multiplex simulation roller, it is characterized in that: the two ends exposure of described roll shaft is outside end plate, and roll shaft exposure is connected by universal joint in one end of split type end plate with motor shaft.
4. roll eddy current defectoscope according to claim 1 verifies multiplex simulation roller, it is characterized in that: described multiplex simulation roller is towards the side of motor, be provided with the roll surface extension with described alloy steel piece with same curvature, roll surface extension is positioned at the top of electric machine casing.
5. roll eddy current defectoscope according to claim 1 verifies multiplex simulation roller, it is characterized in that: described motor is threephase asynchronous or for AC servo motor or for direct current generator or for stepper motor.
6. roll eddy current defectoscope according to claim 1 verifies multiplex simulation roller, it is characterized in that: multiple unlike material alloy steel pieces of described formation multiplex simulation roll body are 2-4 part.
7. roll eddy current defectoscope according to claim 1 verifies multiplex simulation roller, it is characterized in that: described roll body support is provided with proximity switch, proximity switch and motor homonymy, and aims at the outer toroid of A end plate by the pilot hole on roll body support.
8. roll eddy current defectoscope as claimed in claim 1 verifies the method for making of multiplex simulation roller, it is characterized in that: the concrete steps of this method for making are as follows:
(1) external diameter and the length of multiplex simulation roller is determined; Roll shaft and bearing seat are set; Choose cut lengths
The alloy steel piece of the 2-4 block unlike material that specification is consistent, is all machined to that upper surface is arc surface, bottom surface is provided with a raised line, each arc surface for the roll shaft heart for the same radius in the center of circle, same to arc length: each raised line is positioned at bottom surface position placed in the middle;
(2) hollow roll be arranged within multiplex simulation roller is made; This hollow roll is the basic body of roll of multiplex simulation roller, and hollow roll two ends add shrouding; Cut hollow roll again and intend the roll surface installing unlike material alloy steel piece position and the shrouding connected thereof, the position placed in the middle of shrouding section is provided with low groove, according to the number of unlike material alloy steel piece on shrouding, is provided with multiple mounting hole etc. orientation;
(3) roll body of multiplex simulation roller is assembled, the unlike material alloy steel piece of step () is axially placed in the cut corresponding site of hollow roll roll surface along roll body, and the low groove that the raised line of unlike material alloy steel piece bottom surface and the position placed in the middle of shrouding section are provided with matches; Again by the mounting hole on two end-plates, with socket head cap screw, both reverse locks are fixed it;
(4) by the roll surface of the multiplex simulation roller after the assembling of cylindrical grinder rounding, this roll surface is made up of jointly variant material alloy steel piece arc surface and the alternate hollow roll roll surface without cutting wherein;
(5), on the roll surface after rounding, with molybdenum filament in the arc surface mean line of each material alloy steel piece, the axis direction along roll body carries out artificial indentation, and width of nick is 0.2mm;
(6) annular end plate is installed additional at roll body two ends, one piece of A end plate is wherein the split type end plate be made up of outer toroid and interior plectane, and the anchor ring of outer toroid is processed with one section of hand adjustment and selects groove to lack, and groove is lacked, and width is set as alloy steel piece arc surface transverse width 1/3rd; Roll shaft end is stretched out outside end plate, is prepared into hollow multiplex simulation roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210293441.6A CN102788841B (en) | 2012-08-17 | 2012-08-17 | Multipurpose analog roller for verifying roller eddy current inspection instrument and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210293441.6A CN102788841B (en) | 2012-08-17 | 2012-08-17 | Multipurpose analog roller for verifying roller eddy current inspection instrument and manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102788841A CN102788841A (en) | 2012-11-21 |
| CN102788841B true CN102788841B (en) | 2015-02-04 |
Family
ID=47154301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210293441.6A Expired - Fee Related CN102788841B (en) | 2012-08-17 | 2012-08-17 | Multipurpose analog roller for verifying roller eddy current inspection instrument and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102788841B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713762B (en) * | 2015-03-17 | 2017-06-20 | 西安交通大学 | A kind of EDDY CURRENT preparation method for simulating stress corrosion cracking (SCC) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491838Y (en) * | 2001-08-06 | 2002-05-15 | 上海宝钢益昌薄板有限公司 | Verrifier for roller eddy flow audo detector system state |
| CN102023107A (en) * | 2009-09-22 | 2011-04-20 | 上海宝钢工业检测公司 | Automatic manufacturing device of roller surface crack |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB794862A (en) * | 1955-03-12 | 1958-05-14 | Stin | Improvements in or relating to apparatus for the detection of faults in elongated magnetisable bodies |
| JPS5240624B2 (en) * | 1974-02-21 | 1977-10-13 | ||
| JPH07294495A (en) * | 1994-04-22 | 1995-11-10 | Nippon Steel Corp | Coil-shaped material inspection device |
-
2012
- 2012-08-17 CN CN201210293441.6A patent/CN102788841B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491838Y (en) * | 2001-08-06 | 2002-05-15 | 上海宝钢益昌薄板有限公司 | Verrifier for roller eddy flow audo detector system state |
| CN102023107A (en) * | 2009-09-22 | 2011-04-20 | 上海宝钢工业检测公司 | Automatic manufacturing device of roller surface crack |
Non-Patent Citations (5)
| Title |
|---|
| GB 794,862 A,1958.05.14, * |
| JP特开平7-294495A 1995.11.10 * |
| US 3,972,432 A,1976.08.03, * |
| 数值模拟轧辊复合层连续铸造;杨大可等;《特种铸造及有色合金》;19961231(第2期);第37-39页 * |
| 王金伟等.太钢2250mm热连轧精轧机模拟轧辊研制.《机械工程与自动化》.2012,(第2期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102788841A (en) | 2012-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107074049B (en) | Device and method for wheel rim to be locked to turntable | |
| CN104075677B (en) | Method and system for measuring concentricity and tip clearance of rotor and stator of aero-engine | |
| US6907358B2 (en) | Eddy current inspection method | |
| CN105651164B (en) | A kind of improvement line-of-sight course for roundness error measurement | |
| CN106482690B (en) | A kind of gear wheel involute model | |
| US20110247409A1 (en) | Apparatus and method for measuring bores | |
| CN204269049U (en) | For measuring the device of the axial error of tapered roller bearing internal ring large-flange | |
| CN106403758A (en) | Conical surface dimension measuring tool and application method thereof | |
| CN104062353B (en) | Bent axle automation vortex, the compound the cannot-harm-detection device of Magnetic Memory | |
| CN111564939A (en) | Method for centering center of circle measuring frame of rotor of vertical shaft umbrella type hydraulic generator | |
| CN103033117A (en) | Water turbine runner blade assembly roundness testing frame and detection method thereof | |
| CN109059766A (en) | A kind of non-contact detection device of deep groove ball bearing inner ring ditch position | |
| CN204438995U (en) | A kind of concentricity detection tool | |
| CN102788841B (en) | Multipurpose analog roller for verifying roller eddy current inspection instrument and manufacturing method | |
| CN205300466U (en) | Universal joint angle clearance detection device | |
| CN201322608Y (en) | Shifting cam measuring apparatus | |
| CN109238111B (en) | Intelligent rotating machinery centering instrument and operation method thereof | |
| CN105698709B (en) | A kind of measuring method of taper roller radius of curvature | |
| CN108844444B (en) | Measuring tool and measuring method for perpendicularity and intersection degree of large-scale machine body cylinder hole and main shaft hole | |
| CN106017397A (en) | Coaxiality and jumping degree detection device and detection method thereof | |
| CN110345849A (en) | A kind of tooling and its application method of axis and hole roundness measurement | |
| CN206321193U (en) | A kind of special gauge for IC engine airframe cylinder holes coaxality measurement | |
| CN104344784B (en) | Coaxiality detection device for different types of brake drums | |
| KR101405274B1 (en) | A digital run out gauging device of a turbine rotor shaft | |
| CN106091894B (en) | A kind of detection method of turbine rotor blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20210817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |