CN208661802U - Electrical-coil self-checking device - Google Patents
Electrical-coil self-checking device Download PDFInfo
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- CN208661802U CN208661802U CN201820938911.2U CN201820938911U CN208661802U CN 208661802 U CN208661802 U CN 208661802U CN 201820938911 U CN201820938911 U CN 201820938911U CN 208661802 U CN208661802 U CN 208661802U
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- 238000012360 testing method Methods 0.000 claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 238000004804 winding Methods 0.000 claims abstract description 24
- 210000000554 iris Anatomy 0.000 claims abstract description 6
- 230000033001 locomotion Effects 0.000 claims description 19
- 238000002955 isolation Methods 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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Abstract
The utility model belongs to Coil Detector technology, for electrical-coil self-checking device, it includes jet feeding assembly, fixed disk and the rotating disk in fixed disk, is equipped with feed station, binding post detection station, coil-winding detection station, unqualified coil outlet station and acceptance line in fixed plate edge and irises out a mouthful station；Rotating disk rotates on fixed disk, and edge is equipped with and passes through the station in fixed disk in the rotation of positioning hole accompanying rotation disk with the matched location hole of detected coil shape, tested test coil；Jet feeding assembly is in feed station from the location hole that tested test coil is transported to rotating disk upwards below fixed disk.The utility model innovatively designs special lower section feeding manner and the Multistation transmission mechanism based on double-arc spline, solves the conveying and orientation problem of coil.
Description
Technical field
The utility model belongs to Coil Detector technology, and in particular to electrical-coil self-checking device.
Background technique
Electrical-coil manufacturing enterprise frequently encounters such problems when producing coil in enormous quantities: in coil test stage expense
When laborious, especially small size coil, need the artificial coiling of each coil of one by one inspection and binding post etc. under the microscope outer
Situation is seen, judges whether each coil reaches criterion of acceptability, such as whether coil breaks, whether lead-out wire slips into resin, coil
Terminal whether skew, winding turns whether deficiency etc., need more inspection worker if batch is larger while carrying out appearance inspection
It tests.Because the position for needing to examine under the microscope is more, there are also long-times using visual fatigue caused by microscope, so that
Inspection man's task efficiency is lower.Desk checking low efficiency, required reviewer's quantity is more, these all considerably increase inspection
The cost of work；In addition, the accuracy rate examined also is verified the working experience of worker and the influence of degree of fatigue.
Summary of the invention
In order to solve the problems of existing Coil Detector technology, the utility model provides electrical-coil and examines dress automatically
It sets, innovatively designs special lower section feeding manner and the Multistation transmission mechanism based on double-arc spline, solve line
The conveying and orientation problem of circle.
The utility model adopts the following technical solution to realize: electrical-coil self-checking device, tested test coil include
Binding post and coil-winding, the verifying attachment include jet feeding assembly, fixed disk and the rotating disk in fixed disk,
Fixed plate edge is equipped with feed station, binding post detection station, coil-winding detection station, unqualified coil outlet station and conjunction
Ruling irises out a mouthful station；Rotating disk rotates on fixed disk, and edge be equipped with the matched location hole of detected coil shape,
Tested test coil passes through the station in fixed disk in the rotation of positioning hole accompanying rotation disk；Jet feeding assembly is in feed station
In the location hole that tested test coil is transported to rotating disk upwards below from fixed disk.
Preferably, the jet feeding assembly includes part track, air nozzle and charging push rod, in the feed station
Equipped with the matched hole of detected coil shape；The lower section of feed station is arranged in charging push rod, feeds push rod along feed station
On hole move up and down, feed pushrod movement to highest point when charging push rod upper surface flushed with fixed disk upper surface, charging
The upper surface that push rod is fed when pushrod movement to minimum point is flushed with part track；Air nozzle is used to export to tested test coil
High pressure draught makes tested test coil move to charging push rod upper surface along part track.
Preferably, the jet feeding assembly further include isolation push rod, isolation push rod be arranged in feed station outside and
Positioned at the end of part track, the inside that push rod is isolated is equipped with the tested test coil of the front end for that will be located on charging push rod
The isolation board that inductance loop seclusion is opened is detected with other being located on part track.
Preferably, the coil-winding detection station is equipped with hole, driving push rod and the folder for being less than and being detected coil dimension
Tight push rod；Driving push rod is located at below fixed disk, and the upper surface of driving push rod part is in being less than the hole for being detected coil dimension；
Gripping push rods are located above fixed disk；Driving push rod moves upwards, jack up tested test coil it is subsequent it is continuous move upwards, until tested
Test coil overlying contact gripping push rods make tested test coil be in the state clamped by driving push rod and gripping push rods, then drive
Dynamic push rod drives tested test coil to make rotating motion around the axis of driving push rod.
Preferably, third camera is additionally provided in the coil-winding detection station；It makes rotating motion in tested test coil
Meanwhile third camera is continuously shot the winding area of tested test coil.
Preferably, the unqualified coil outlet station is equipped with an elongated slot, unqualified push rod and unqualified outlet rail
Road, elongated slot are arranged in fixed disk；Unqualified push rod is located in elongated slot by fixed disk outer fix, and the inside of unqualified push rod is
The centre of plate part, unqualified push rod is equipped with through-hole；Plate part on the inside of the unqualified push rod surface bearing quilt under rotating disk
Detection coil；Unqualified exit track is located at below the through-hole of unqualified push rod.
Preferably, there are two the unqualified coil outlet station is set, the first unqualified coil outlet station setting is being connect
Between terminal detection station, coil-winding detection station, the second unqualified coil outlet station setting detects work in coil-winding
Position, acceptance line are irised out between mouthful station.
Preferably, the acceptance line irises out the hole and qualified product outlet rail that mouthful station is greater than tested test coil equipped with one
Road, qualified product exit track are located at the lower section for being greater than the hole of tested test coil.
Compared with prior art, technical solutions of the utility model bring it is following the utility model has the advantages that
1, since detected electrical-coil size is small, quality is light and handy, and coil lead and coil-winding area are respectively positioned on line
The lateral surface of cylinder is enclosed, thus the conveying and positioning mechanism design of electrical-coil are more difficult, the utility model innovatively designs
Lower section feeding structure and using double-arc spline as the transmission of the multistation of core, positioning, testing agency, realizes this kind of complex parts
Conveying, positioning, detection.
2, the coil self-checking device combination PLC control and CCD vision detection technology of the utility model, can it is automatic,
Continuously, it rapidly realizes the automatic inspection work to coil appearance, keeps the work of reviewer lighter, substantially reduced inspection people
Member's quantity, by the automatic measuring machine structure for configuring fair amount in the production line, so that it may effectively improve coil and examine work
Working efficiency, reduce cost.
Detailed description of the invention
Fig. 1 is detected electrical-coil appearance schematic diagram；
Fig. 2 is the structural schematic diagram of the utility model electrical-coil self-checking device；
Fig. 3 is the main parts size schematic diagram of mechanism that Fig. 2 removes the accessories such as pedestal；
Fig. 4 is the schematic diagram that fixed disk and rotating disk are split；
Fig. 5 is the top view of six stations in fixed disk；
Fig. 6 is the 1st station original state schematic diagram；
Fig. 7 is the schematic diagram for being detected electrical-coil and pushing ahead along part track；
Fig. 8 be front end detected electrical-coil charging push rod and be isolated push rod collective effect under move upwards show
It is intended to；
Fig. 9 is state diagram at the end of the movement of the 1st station；
Figure 10 is the shooting direction schematic diagram of the first camera on the 2nd station；
Figure 11 is the shooting direction schematic diagram of the second camera on the 2nd station；
Figure 12 is the 3rd station original state figure；
Figure 13 is movement locus schematic diagram of the underproof electrical-coil of binding post in the 3rd station；
Figure 14 is the 4th station original state figure；
Figure 15 is the schematic diagram that the 4th station completes first element；
Figure 16 is the shooting direction schematic diagram of the third camera on the 4th station；
Figure 17 is the schematic diagram that the 4th station completes second movement；
Figure 18 is the outlet schematic diagram of qualified electrical-coil.
Specific embodiment
The detected electrical-coil 100 that the utility model is directed to is as shown in Figure 1.Predominantly detecting position is three piece-root grafting terminals
101 and circumference winding area 102.Coil dimension is smaller, and shape is more complex, and the conveying of coil and positioning difficulty are all bigger, presses
The design method of conventional automated equipment conveying mechanism is difficult to realize.The utility model innovatively design special lower section into
Material mode and the six station transport mechanisms based on double-arc spline, solve the conveying and orientation problem of coil.
The coil automatic measuring machine structure total figure of the utility model is as shown in Fig. 2, remove the main of the accessories such as pedestal 201
Components schematic diagram of mechanism as shown in figure 3, include jet feeding assembly, fixed disk 203 and the rotating disk 202 in fixed disk,
Six stations, i.e. 1-6 station are equipped in fixed plate edge, the 1st station 2031 is feed station, and the 2nd station 2032 is wiring
Post detection station, the 3rd station 2033 are the unqualified outlet station of binding post, and the 4th station 2034 is coil-winding detection station, the
5 stations 2035 are the unqualified outlet station of coil-winding, and the 6th station 2036 is that acceptance line irises out a mouthful station.Rotating disk is first
It is rotated on fixed disk under the driving of stepper motor 204, rotation plate edge is equipped with 6 and the matched location hole of coil shape
(the positioning hole number of rotation plate edge is consistent with the station quantity in fixed disk) is detected test coil in positioning hole with rotation
The rotation of turntable is by the station in fixed disk.Jet feeding assembly includes part track 205, air nozzle 206, charging push rod
207 are fixed on pedestal 201 with isolation push rod 208, part track；The lower section of the 1st station in fixed disk is arranged in charging push rod,
1st station is equipped with can move up and down with the matched hole of coil shape, charging push rod along the hole in feed station, charging push rod fortune
The upper surface of charging push rod is flushed with fixed disk upper surface when moving to highest point, and when charging pushrod movement to minimum point feeds push rod
Upper surface flushed with part track；The outside of the 1st station and the end positioned at part track in fixed disk is arranged in isolation push rod
End；In the present embodiment, there are two air nozzle is set, an air nozzle is located at part track beginning, another air nozzle
Between part track beginning and end, air nozzle is used to export high pressure draught to tested test coil, makes tested test coil
Charging push rod upper surface is moved to along part track.
In short, innovative double-arc spline core design is as follows: two disks positioned at self-checking device center, i.e.,
Fixed disk and rotating disk, wherein fixed disk is fixed, is mainly used to be detected coil from lower surface bearing；Rotating disk is solid
It above price fixing, can be rotated under the driving of the first stepper motor, rotation plate edge uniformly distributed 6 and the matched positioning of coil shape
Hole, for realizing accurate positionin in each station by the station in fixed disk, and for coil with moving winding.Fixed disk and rotation
The structure that two disks of disk are split is as shown in Figure 4.
Six stations are divided into fixed disk, it is seen from above as shown in Figure 5.Tested test coil is between six stations
Conveying relies primarily on the rotating disk above fixed disk and drives.Rotating disk is done primary every 60 ° under the drive of the first stepper motor
The rotary motion of pause.Each tested test coil is successively transported to 1,2,3,4,5,6 stations in order, to complete entire
Checkout procedure.Each station is respectively completed respective work during pausing every time, and the work and effect of each station are as follows:
1st station: tested test coil entrance
This station original state is as shown in Figure 6.Fixed disk the position of this station have with the matched hole of coil shape, into
Expect push rod upper part just in this hole.Charging push rod with push rod be isolated connect respectively with cylinder, all putter actions are led to
PLC control cylinder is crossed to complete.
Charging push rod moves downward, until the upper surface of charging push rod is concordant with part track, it is inside that push rod is then isolated
Movement (direction "inner" herein is the direction for being directed toward two disk axis, and "outside" is then opposite), is opened in part track end
Channel.The tested test coil being arranged successively on part track is under the action of the high pressure gas that air nozzle is blown out along part rail
Road is pushed ahead, the tested test coil of front end be pulled to charging push rod right above, as shown in Figure 7 (eliminated in figure fixed disk,
Rotating disk and part track upper cover plate), the 1st station completes first element.
Isolation push rod move out, on the inside of isolation board will be located at charging push rod on front end tested test coil with
Followed by be located at part track on other be detected inductance loop seclusions open, then feed push rod with the front end quilt
Detection coil moves upwards, until the upper surface of charging push rod is concordant with fixed disk upper surface, as shown in figure 8, the 1st station is completed
Second movement.The effect of push rod is isolated during this: the tested test coil of front end can both have been helped to enter above charging push rod
Accurate location, and can prevent charging push rod when moving upwards by the obstruction for coming subsequent tested test coil.
Electrical-coil is detected under the promotion of charging push rod, the hole in fixed disk, into the circular hole of rotating disk,
Wait rotation rotating disk next time that it is taken to next station.State is as shown in Figure 9 at the end of 1st station acts.
Innovative lower section feeding manner: by part track, isolation push rod, charging push rod cooperating, from fixed disk
Tested test coil is transported in the location hole of rotating disk by lower section upwards.
2nd station: wiring post detection
Fixed disk does not have hole in the position of this station, and fixed disk supports coil below.Pass through CCD the in this station
One camera 209 and second camera 210 are shot, and the picture of shooting passes through computer programs process and judges the station present coil
Whether three piece-root grafting terminal appearances are qualified.First camera, the shooting direction of second camera difference are as shown in Figure 10, Figure 11, clap respectively
Take the photograph the main view and top view of binding post.
3rd station: the unqualified outlet of binding post
This station original state is as shown in figure 12.Fixed disk has an elongated slot, unqualified push rod in the position of this station
211 are located in elongated slot by fixed disk outer fix, and unqualified push rod inside is plate part 212, and centre is equipped with through-hole 213；No
Plate part on the inside of the qualified push rod surface bearing under rotating disk is detected coil.Unqualified exit track is equipped with below through-hole.
If it is qualified, this station attonity that this station, which is currently detected test coil and examines binding post result in the 2nd station,
Tested test coil will wait rotating disk to rotate again and go to next station with it in this position.
If this station present coil the 2nd station examine binding post result be it is unqualified, unqualified push rod is inwardly transported
Dynamic, the square through hole among push rod moves to immediately below tested test coil, loses bearing below coil, under fall on unqualified outlet
Track 214, as shown in figure 13.After rejected part falls into track, unqualified push rod is moved out, and is returned to initial shown in Figure 12
Position.
4th station: coil-winding detection
This station original state is as shown in figure 14.Fixed disk has one to be less than tested test coil ruler in the position of this station
Very little hole, driving push rod, gripping push rods and third camera；Driving push rod 215 is located at below fixed disk, and the upper surface of driving push rod
Part is detected below test coil and supports by fixed disk in this hole of the 4th station；Gripping push rods are located above fixed disk.
Driving push rod moves upwards, jack up tested test coil it is subsequent it is continuous move upwards, until being detected test coil overlying contact
Gripping push rods 216 are detected test coil and are in the state clamped by driving push rod and gripping push rods.Then in second stepper motor
Under 217 driving, driving push rod drives tested test coil to make rotating motion around the axis of driving push rod, as shown in figure 15, the 4th
Station completes first element.
While tested test coil rotation, the winding area of tested test coil is continuously shot by CCD third camera 218,
By the picture being continuously shot by computer programs process and judge the station currently be detected test coil winding area appearance be
No qualification.The shooting direction of third camera is as shown in figure 16.
After the completion of shooting, driving push rod stops operating, and gripping push rods and driving push rod move downward simultaneously, keeps to tested
The clamp position of test coil falls on fixed disk upper surface, such as Figure 17 until being detected in the location hole that test coil falls back to rotating disk
Shown, the 4th station completes second movement.
Driving push rod continues to fall to simultaneously clamp on push rod and move upwards, return to this station such as so that it completely disengages coil
Original state shown in Figure 14.
5th station: the unqualified outlet of coil-winding
The work of this station is similar with the work of the 3rd station, and original state is as shown in figure 12.Fixed disk is in this station
There is an elongated slot in position, and it is flat part on the inside of fixed disk outer fix, unqualified push rod that unqualified push rod 211, which is located in elongated slot,
Divide 212, centre is equipped with through-hole 213.Plate part on the inside of unqualified push rod supports coil below.
If this station present coil is qualification, this station attonity, coil in the 4th station control coil coiling result
Rotating disk will be waited to rotate again in this position and go to next station with it.
If this station present coil the 4th station control coil coiling result be it is unqualified, unqualified push rod is inside
Movement, square through hole moves to immediately below tested test coil among push rod, loses bearing below coil, under fall on unqualified outlet
Track, as shown in figure 13.After rejected part falls into track, unqualified push rod is moved out, and returns to initial bit shown in Figure 12
It sets.
6th station: qualified product outlet
The only all qualified tested test coil of front two kinds of inspection results of station finally could be transported to this by rotating disk
Station, fixed disk have the hole for being greater than tested test coil and qualified product exit track in the position of this station, are detected survey line
Circle can voluntarily fall and enter qualified product exit track 219, as shown in figure 18.The location hole of rotating disk is vacated on this station
Come, waits rotation next time disc spins to rotate back into the 1st station again, into next circulation.
It so constantly moves in circles, constantly the conveying of tested test coil is entered from part track, each tested test coil
It successively passes by six stations, every 60 degree of the rotation of rotating disk just has a tested test coil and completes inspection work.It is set on pedestal 201
There are fixed the 220, the 3rd station of bracket, the gripping push rods on unqualified push rod and the 4th station on the 5th station to be installed in this
On fixed bracket.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (10)
1. electrical-coil self-checking device, tested test coil includes binding post and coil-winding, which is characterized in that the inspection
Device includes jet feeding assembly, fixed disk and the rotating disk in fixed disk, is equipped with feed station in fixed plate edge, connects
Terminal detection station, coil-winding detection station, unqualified coil outlet station and acceptance line iris out a mouthful station；Rotating disk is solid
Rotated above price fixing, and edge be equipped with the matched location hole of detected coil shape, be detected test coil it is adjoint in positioning hole
The rotation of rotating disk is by the station in fixed disk；Jet feeding assembly will be detected below fixed disk upwards in feed station
Coil is transported in the location hole of rotating disk.
2. electrical-coil self-checking device according to claim 1, which is characterized in that the jet feeding assembly includes
Part track, air nozzle and charging push rod, the feed station are equipped with and the matched hole of detected coil shape；Charging pushes away
The lower section of feed station is arranged in bar, feeds hole of the push rod in feed station and moves up and down, charging pushrod movement to highest point
When charging push rod upper surface flushed with fixed disk upper surface, feed pushrod movement to minimum point when charging push rod upper surface and
Part track flushes；Air nozzle is used to export high pressure draught to tested test coil, moves tested test coil along part track
To charging push rod upper surface.
3. electrical-coil self-checking device according to claim 2, which is characterized in that the jet feeding assembly also wraps
Isolation push rod is included, isolation push rod is arranged in the outside of feed station and is located at the end of part track, is isolated on the inside of push rod and sets
Have the tested test coil of the front end for that will be located on charging push rod and other tested test coils for being located on part track every
The isolation board left.
4. electrical-coil self-checking device according to claim 2, which is characterized in that the air nozzle is equipped with two
A, an air nozzle is located at part track beginning, another air nozzle is between part track beginning and end.
5. electrical-coil self-checking device according to claim 1, which is characterized in that in the binding post detection station
Equipped with first camera, the second camera for being respectively used to shooting binding post main view and top view.
6. electrical-coil self-checking device according to claim 1, which is characterized in that the coil-winding detection station
It is equipped with hole, driving push rod and the gripping push rods for being less than and being detected coil dimension；Driving push rod is located at below fixed disk, and drives
The upper surface of push rod part is in being less than the hole for being detected coil dimension；Gripping push rods are located above fixed disk；Driving push rod is upward
Movement, jack up tested test coil it is subsequent it is continuous move upwards, until being detected test coil overlying contact gripping push rods, make tested test coil
In the state clamped by driving push rod and gripping push rods, then driving push rod drives tested test coil around the axis of driving push rod
Line makes rotating motion.
7. electrical-coil self-checking device according to claim 6, which is characterized in that the coil-winding detection station
On be additionally provided with third camera；While tested test coil makes rotating motion, third camera be continuously shot tested test coil around
Line region.
8. electrical-coil self-checking device according to claim 1, which is characterized in that the unqualified coil exports work
Position is equipped with an elongated slot, unqualified push rod and unqualified exit track, and elongated slot is arranged in fixed disk；Unqualified push rod is located at
Fixed disk outer fix is leaned in elongated slot, the inside of unqualified push rod is plate part, and the centre of unqualified push rod is equipped with through-hole；No
Plate part on the inside of the qualified push rod surface bearing under rotating disk is detected coil；Unqualified exit track is located at unqualified push rod
Through-hole below.
9. electrical-coil self-checking device according to claim 8, which is characterized in that the unqualified coil exports work
There are two position is set, the first unqualified coil outlet station is arranged between binding post detection station, coil-winding detection station, the
Two unqualified coil outlet station settings are irised out between mouthful station in coil-winding detection station, acceptance line.
10. electrical-coil self-checking device according to claim 1, which is characterized in that the acceptance line irises out a mouthful work
Position is equipped with the hole and qualified product exit track that one is greater than tested test coil, and qualified product exit track, which is located at, is greater than tested test coil
Hole lower section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820938911.2U CN208661802U (en) | 2018-06-19 | 2018-06-19 | Electrical-coil self-checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820938911.2U CN208661802U (en) | 2018-06-19 | 2018-06-19 | Electrical-coil self-checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208661802U true CN208661802U (en) | 2019-03-29 |
Family
ID=65823947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820938911.2U Expired - Fee Related CN208661802U (en) | 2018-06-19 | 2018-06-19 | Electrical-coil self-checking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208661802U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435595A (en) * | 2018-06-19 | 2018-08-24 | 广东机电职业技术学院 | Electrical-coil self-checking device |
| CN113042389A (en) * | 2021-03-23 | 2021-06-29 | 湖南钐河科技有限公司 | Bearing inner hole size detection device |
-
2018
- 2018-06-19 CN CN201820938911.2U patent/CN208661802U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435595A (en) * | 2018-06-19 | 2018-08-24 | 广东机电职业技术学院 | Electrical-coil self-checking device |
| CN113042389A (en) * | 2021-03-23 | 2021-06-29 | 湖南钐河科技有限公司 | Bearing inner hole size detection device |
| CN113042389B (en) * | 2021-03-23 | 2024-03-15 | 佳木斯电机股份有限公司 | Bearing inner hole size detection device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190329 |
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| CF01 | Termination of patent right due to non-payment of annual fee |