CN203091880U - Bearing perforating device - Google Patents
Bearing perforating device Download PDFInfo
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- CN203091880U CN203091880U CN 201220696723 CN201220696723U CN203091880U CN 203091880 U CN203091880 U CN 203091880U CN 201220696723 CN201220696723 CN 201220696723 CN 201220696723 U CN201220696723 U CN 201220696723U CN 203091880 U CN203091880 U CN 203091880U
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Abstract
The utility model belongs to the field of automation and provides a bearing perforating device which is used for perforating a bearing pressed into a hollow-cup motor housing. The bearing perforating device comprises a positioning mechanism, a clamping mechanism, a perforating mechanism, a power mechanism and a control system, wherein the positioning mechanism is used for carrying and positioning the housing, the clamping mechanism is used for fixing the housing on the positioning mechanism, the perforating mechanism is used for perforating the bearing in the fixed housing, the power mechanism is used for supplying power for perforating of the perforating mechanism, and the control system is used for automatically controlling the mechanisms. Coaxiality of the housing and inner holes of the bearing therein is guaranteed by the positioning mechanism, and positioning is accurate. The housing is kept stable by the clamping mechanism. The perforating mechanism is used for perforating and rectifying the inner holes of the bearing, accuracy is high, and the inner holes are uniform in diameter and high in quality. The control system automatically controls the mechanisms and high in processing efficiency. Meanwhile, multiple bearing perforating devices are assembled into a bearing perforating machine and can be controlled by one operator, and labor cost is reduced.
Description
Technical field
The utility model belongs to automatic field, relates in particular to a kind of casing bearing cross hole device.
Background technology
Along with the fast development of the market demand, the application of hollow cup micro machine more and more widely, and market competition is violent, workman's cost rises steadily, and is very unfavorable to the development of enterprise.Particularly the client is more and more higher to the requirement of hollow cup micro machine, all must reach higher performance when requiring hollow cup empty load of motor and load, comprise rotating speed, electric current, noise, even the electric current during electric motor starting etc. requires all the fluctuation range of motor will be controlled in the less interval.
The casing bearing of hollow cup micro machine is bigger to the influence of rotating speed, electric current, noise, the concentricity of the size of dead eye, circularity, dead eye and casing, coarse fineness etc. all can produce bigger influence to above-mentioned performance, even can say so and determined the quality of motor.
The bearing of hollow cup micro machine is to be similar to cellular oiliness bearing, so that lubricating oil constantly is provided when forwarding at a high speed, just because of have cellular, so behind the lining or trombone slide that bearing are pressed into casing, irregular distortion after the stressed back of bearing outer wall endoporus will diminish, so, also need brearing bore is adapted to the circularity and the internal diameter of design, and guarantee its concentricity in order to guarantee the quality of motor.Mode commonly used at present is: behind the lining or trombone slide that bearing are pressed into casing, the operator directly arrests the casing position with hand, brearing bore directly to through hole correction on the quasi high-speed through hole axle that forwards to, for the workman that can guarantee operation can arrest casing, it is not rotated simultaneously with the through hole axle, need the through hole axle is cut out some groove positions, by there being the through hole axle that cuts groove that brearing bore is cut correction, but this kind mode, because the unstability that the people hands, the internal diameter of the endoporus of pass-out is not of uniform size, and the surface roughness of especially serious is endoporus is relatively poor, so that be difficult to reach requirement of client aspect electric current and the noise.For fear of the problems referred to above, also adopted another kind of mode: directly the brearing bore design size is big, without this procedure of through hole correction, directly assembling, but because bearing is cellular oiliness bearing, stand to be out of shape after the external force, and it is rough, the concentricity of bearing and casing can not get also guaranteeing that the electric current of motor and noise all may be bigger that motor quality is difficult to be guaranteed.
The utility model content
The purpose of the utility model embodiment is to provide a kind of bearing cross hole device, and is of poor quality when being intended to solve the interior uprighting of the bearing that press-fits in the current drag cup micro machine casing, is difficult to reach the problem of designing requirement.
The utility model embodiment is achieved in that a kind of bearing cross hole device, is used for the endoporus that is pressed into drag cup motor case middle (center) bearing is carried out the through hole correction; Comprise: detent mechanism is used for carrying and locatees described casing; Clamping device is positioned at the top of described detent mechanism, is used for the casing of being located on the described detent mechanism is fixed; Through hole mechanism is used for the bearing of the described casing after fixing is carried out the through hole correction, and it comprises the through hole axle that is positioned at described detent mechanism below; Actuating unit is used for described through hole mechanism is provided the power of through hole; And control system, be used for said mechanism is controlled automatically.
Particularly, described detent mechanism comprises the supporting component of positioning fixture and the described positioning fixture of support; Described positioning fixture top offers the support holes of the described casing of carrying, and described support holes bottom offers and the coaxial positioning through hole of described casing middle (center) bearing.
More specifically, described supporting component comprises the fixed head of fixing described positioning fixture and the support column of the described fixed head of support.
More specifically, described clamping device comprises the clamping hand that is used for the described casing of clamping and drives described clamping hand clamping and the clamping cylinder that unclamps described casing; Described clamping hand is arranged at described positioning fixture top.
More specifically, described through hole mechanism also comprise the described through hole axle of clamping clamping piece, slide block, be set on the described clamping piece and be installed on sleeve in the described slide block, erect the guide pillar that is provided with and promote the through hole cylinder that described slide block slides up and down; Described slide block is slidingly mounted on the described guide pillar; Described sleeve rotates and is installed in the described slide block.
More specifically, described through hole mechanism also comprises the through hole bearing; Described through hole bearing holder (housing, cover) is loaded on the described sleeve, and is installed on together in the described slide block.
Particularly, described actuating unit comprise motor, be installed on drive pulley on the described motor output shaft, be set in the driven pulley on the described sleeve and be sheathed on described drive pulley and described driven pulley on belt.
Further, also comprise the described casing and the bearing receiving mechanism thereof that are used to collect behind the through hole, described receiving mechanism and described clamping device are fixedly linked.
Particularly, the guide rail cylinder is fixedlyed connected with described detent mechanism, and promotes described detent mechanism and move horizontally; Cylinder links to each other with described guide rail cylinder up and down, and promotes described guide rail cylinder and move up and down, and then drives described detent mechanism and move up and down; And hopper, be arranged at described detent mechanism below, be used to reclaim described casing and bearing thereof behind the through hole.
More specifically, described receiving mechanism also comprises limiting plate and slide plate up and down; Described cylinder up and down links to each other with described guide rail cylinder by described slide plate up and down; Described limiting plate is located at the described below of slide plate up and down.
The utility model uses detent mechanism to come casing is positioned, and bearing is to press fit in the casing, thereby guarantees the axiality of brearing bore and casing, accurate positioning; Use fixedly casing of clamping device, fixing stability is high; The through hole axle that uses through hole mechanism carries out the through hole correction, precision height, endoporus aperture high conformity, quality height to the endoporus of the casing middle (center) bearing that fixes; Use control system to control automatically, the working (machining) efficiency height saves labour turnover.Thereby make the motor quality that produces good.Simultaneously can be assembled into a bearing cross hole machine more, add man-hour, control many described bearing cross hole devices, further raise the efficiency, reduce human cost by a people with overlapping described bearing cross hole device.
The utility model is further, also is provided with receiving mechanism, by the receiving mechanism automatic material receiving, further improves working (machining) efficiency; Simultaneously, by the receiving mechanism rewinding, avoided, the danger of scalding because of the overheated personnel of causing of casing after the processing occurs, and guarantees safety of workers.
Description of drawings
Fig. 1 is the left TV structure schematic diagram that the utility model embodiment provides a kind of bearing cross hole machine, comprising the described bearing cross hole device of two covers.
Fig. 2 is the structural representation of facing of Fig. 1 middle (center) bearing through-hole machine, and part-structure adopts cross-section structure among the figure.
Fig. 3 is the plan structure schematic diagram of Fig. 1 middle (center) bearing through-hole machine.
Fig. 4 is the front view of Fig. 2 medium power mechanism.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is the vertical view of Fig. 4.
Fig. 7 is the structural representation of supporting component among Fig. 2, also comprises the guide pillar in the through hole mechanism among the figure.
Fig. 8 is the left view of Fig. 7.
Fig. 9 is the cross-section structure enlarged drawing of positioning fixture among Fig. 1.
Figure 10 is the vertical view of slide block among Fig. 1.
Figure 11 is the profile of Fig. 1 middle sleeve structure.
Figure 12 is that the through hole axle is installed on positive TV structure enlarged drawing in the clamping piece among Fig. 1.
Figure 13 is the plan structure enlarged drawing of clamping piece among Figure 12.
Figure 14 is that through hole axle among Fig. 1, clamping piece, sleeve and fastening pull rod cooperate the cross-section structure enlarged drawing after installing.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also Fig. 1, a kind of bearing cross hole machine that the utility model embodiment provides, this bearing cross hole machine comprises that two covers are used for the bearing cross hole device to the through hole that is pressed into drag cup motor 41 casing middle (center) bearings, and every cover bearing through hole device comprises: detent mechanism 1 is used for carrying and location casing; Clamping device 2 is used for the casing on the detent mechanism 1 is fixed; Through hole mechanism 3 is used for the bearing of the casing after fixing is carried out through hole; Actuating unit 4 is used for through hole mechanism 3 is provided the power of through hole; And control system, be used for said mechanism is controlled automatically.Clamping device 2 is located at the top of detent mechanism 1, thereby clamping is placed in the casing on the detent mechanism 1.Through hole mechanism 3 comprises through hole axle 31, its be located at detent mechanism 1 the below and with detent mechanism 1 on the coaxial bearing that is pressed in the casing behind the fixing so that the bearing that is pressed in the casing on the detent mechanism 1 is carried out through hole.
Use 1 pair of casing of detent mechanism to position, and bearing is to press fit in the casing, thereby guarantees the axiality of brearing bore and casing, accurate positioning; Use clamping device 2 to fix casing, fixing stability is high; Use the endoporus of 3 pairs of casing middle (center) bearings that fix of through hole mechanism to carry out the through hole correction, precision height, endoporus aperture high conformity, quality height; Use control system to control automatically, the working (machining) efficiency height saves labour turnover.Thereby make motor 41 quality that produce good.Simultaneously can be assembled into a bearing cross hole machine more, add man-hour, control many bearing cross hole devices, further raise the efficiency, reduce human cost by a people with overlapping bearing through hole device.
See also the supporting component 10 that Fig. 1 and Fig. 2 detent mechanism 1 comprise positioning fixture 11 and support positioning fixture 11; See also Fig. 9, positioning fixture 11 tops offer the support holes 111 of carrying casing, support holes 111 bottoms offer the positioning through hole 112 coaxial with the casing middle (center) bearing, through hole axle 31 can move up and down along positioning through hole 112, and then carries out through hole to being fixed on the bearing that is pressed in the casing in the support holes 111.See also Fig. 7 and Fig. 8, supporting component 10 comprises the fixed head 12 of stationary positioned anchor clamps 11 and the support column 13 of support fixation plate 12.
See also Fig. 1, Fig. 2 and Fig. 3, clamping device 2 comprises clamping hand 21 and clamping cylinder 22; Clamping hand 21 is arranged at positioning fixture 11 tops, is used for the clamping casing; Clamping cylinder 22 links to each other with clamping hand 21, and then drives clamping hand 21 clampings and unclamp casing.In the present embodiment, clamping hand 21 is a two boards side by side, has in the middle of it and is convenient to the fixedly groove of casing.
See also Fig. 1 and Fig. 2, through hole mechanism 3 also comprise the described through hole axle 31 of clamping clamping piece 32, slide block 35, be set on the described clamping piece 32 and be installed on sleeve 33 in the described slide block 35, erect the guide pillar 36 that is provided with and promote the through hole cylinder 37 that described slide block 35 slides up and down; Described slide block 35 is slidingly mounted on the described guide pillar 36; Described sleeve 35 rotates in described slip 35 under the driving of actuating unit 4.
Through hole mechanism 3 also comprises through hole bearing 34; Through hole bearing 34 is sleeved on the sleeve 33, and is installed on together in the slide block 35; Thereby the resistance that sleeve 33 is rotated in slide block 35 is littler, makes its rotation faster, more steady, and then drives the 31 faster rotations more quietly of through hole axle, so that the hole of 31 pairs of casing inner bearings of through hole axle pass-out is brighter and cleaner, more accurate.See also Figure 11 and Figure 14, clamping piece 32 plug-in mounting is from the top down gone into sleeve 33, and strains in the sleeve 33 by fastening pull rod 38; See also Figure 12, clamping piece 32 upper ends have chuck 321, and the lower end is a thread head 320, and chuck 321 external diameters are greater than the internal diameter of sleeve 33; Positioning through hole 112 is passed in through hole axle 31 upper ends, and the lower end is clamped in the chuck 321 of clamping piece 32; The internal thread 381 that fastening pull rod 38 top tools cooperate with thread head 320, its lower end has block 382; Fastening pull rod 38 plug-in mounting is from bottom to top gone in the sleeve 33, and its block 382 withstands sleeve 33 bottoms, and its internal thread 381 is connected and strain clamp firmware 32 with thread head 320; Slide block 35 is slidingly mounted on the guide pillar 36; Through hole cylinder 37 links to each other with slide block 35, and can promote slide block 35 and slide up and down along guide pillar 36.See also Figure 13, the chuck 321 of clamping piece 32 is three valve structures, and chuck 321 outsides table has the inside conical surface 322, and endoporus 331 tops of sleeve 33 have the conical surface that cooperates with the chuck conical surface 322; See also Figure 14, the internal thread 381 by fastening pull rod 38 cooperates with the thread head 320 of clamping piece 32, pulls down clamping piece 32, and by the cooperating of chuck 321 and sleeve 33, makes three valve structures of chuck 321 inwardly clamp the through hole axle 31 that is installed on its centre.Clamp through hole axle 31 by three valve structures, cooperate with the chuck conical surface 322 with the endoporus 331 top conical surfaces by sleeve 33, can play coaxial effect automatically, even through hole axle 31 is coaxial automatically with clamping piece 32, and make clamping piece 32 and sleeve 33 coaxial automatically, the position that guarantees through hole axle 31 is accurate, improves crudy.
See also Fig. 1, Fig. 4, Fig. 5 and Fig. 6, actuating unit 4 comprises motor 41, be installed on drive pulley 42 on the motor 41, be set in the driven pulley 43 on the sleeve 33 and be sheathed on belt 44 on drive pulley 42 and the driven pulley 43.Drive drive pulley 42 by motor 41 and rotate,, and then drive driven pulley 43 rotations again by belt 44 transmissions; And driven pulley 43 is installed on the sleeve 33, rotate thereby drive sleeve 33, and then the clamping pieces 32 that drive in the sleeve 33 rotate, and drive through hole axle 31 and rotate, thereby the endoporus of the casing inner bearing by 31 pairs on through hole axle after fixing carries out the through hole correction.Use drive pulley 42 to drive the structure of driven pulley 43, can increase the rotating speed of driven pulley 43, thereby make through hole axle 31 high speed rotating, so that the endoporus fineness that processes is higher.Use belt 44 transmissions, when moving up and down, can make driven pulley 43 that certain up and down amount also can be arranged, thereby be convenient to through hole processing in through hole mechanism 3, but while alleviator weight.
See also Fig. 7 Fig. 8 and Figure 10, slide block 35 middle being provided with are used for installing sleeve 33 perforates 351, and these perforate 351 two ends are provided with and cooperate the shaft shoulder 352 that through hole bearing 34 is installed.Slide block 35 opposite ends offer slide opening 350, and engage sleeves is loaded on the guide pillar 36, and like this, slide block 35 can slide up and down along guide pillar 36.Simultaneously, when belt 44 drives driven pulley 43 rotations, can play a supporting role, guarantee through hole axle 31 and positioning through hole 112 axialities, make the endoporus precision that processes higher.Use through hole bearing 34, it is littler to make sleeve 33 rotations be subjected to resistance, increases its velocity of rotation.
See also Figure 12, through hole axle 31 also can use no cutting groove through hole axle, and the through hole axle by no cutting groove is to the brearing bore formula through hole correction of polishing, thereby having avoided occurring makes the problem of bearing inner arm variable thickness because of the correction of cutting type through hole; Also can further improve the fineness of brearing bore simultaneously, improve the quality of products.
Further, see also Fig. 1, Fig. 2 and Fig. 3, the bearing cross hole device also comprises receiving mechanism 5, is used to collect casing and bearing thereof behind the through hole.By receiving mechanism 5 automatic material receivings, further improve working (machining) efficiency; Simultaneously, by receiving mechanism 5 rewindings, avoided, the danger of scalding because of the overheated personnel of causing of casing after the processing occurs, and guarantees safety of workers.
See also Fig. 1 and Fig. 3, in the present embodiment, up and down slide plate 53 and up and down 55 in cylinder also be provided with lower connecting block 54; By last lower connecting block 54, up and down cylinder 55 links to each other with slide plate 53 up and down.Guide rail cylinder 51 is installed on the level board 52, with guarantee guide rail cylinder 51 steadily, level board 52 is installed in up and down on the slide plate 53, drives level boards 52 by slide plate 53 up and down and moves up and down, and then drive guide rail cylinder 51 and move up and down.Guide rail cylinder 51 links to each other with the clamping cylinder 22 of clamping device 2, and by clamping cylinder 22 is fixed on the fixed block 23, fixed block 23 is fixedlyed connected with the piston of guide rail cylinder 51.By guide rail cylinder 51, drive clamping cylinder 22 and move, and then drive clamping device 2 moves.
In the present embodiment, the bearing cross hole machine also comprises base plate 7, and two cover bearing through hole devices are fixed on the base plate 7, the control system of bearing cross hole device is arranged in the control cabinet 6, and control cabinet 6 is fixed on guide rail cylinder 51 tops, thereby reduce the volume of complete machine.The motor 41 of through hole mechanism 3 is that the gripper shoe 45 by vertical setting is installed on the base plate 7, also is provided with motor fixing plate 46 simultaneously on gripper shoe 45, comes further fixed electrical machinery 41, guarantees the stable of motor 41.And limiting plate 56 is installed on the motor fixing plate 46.Through hole cylinder 37 is directly fixed on the base plate 7.By through hole contiguous block 39, through hole cylinder 37 is linked to each other with slide block 35.
During work, open motor 41, motor 41 drives drive pulley 42 and rotates, and drives driven pulley 43 by belt 44 and rotates, and then drive through hole axle 31 high speed rotating.The casing of band through hole correction is placed in the support holes 111 of positioning fixture 11, clamping cylinder 22 drives clamping hand 21 clamping casings, through hole cylinder 37 moves on promoting to slide again, move thereby drive on sleeve 33 and the through hole axle 31, through hole axle 31 moves along passing on the positioning through hole 112, and the endoporus of casing inner bearing fixing in the support holes on the positioning through hole 112 111 is carried out the through hole correction; After the through hole correction, through hole cylinder 37 drives through hole axle 31 and moves down; Then, move on 55 promotion guide rails of cylinder cylinder 51 up and down, move thereby drive on clamping cylinder 22 and the clamping hand 21, and this moment, clamping hand 21 also clamps casing, thereby casing is taken out from the support holes 111 of positioning fixture 11; Afterwards, guide rail cylinder 51 drives clamping cylinder 22 and moves horizontally, and then the casing that drives clamping in the clamping hand 21 moves horizontally, and directly over hopper 57, clamping cylinder 22 drives clamping hands 21 and unclamps casing, in the casing whereabouts hopper 57, guide rail cylinder 51 promotes clamping cylinder 22 again, and then drives clamping hand 21 to positioning fixture 11 tops, and cylinder 55 bounces back again up and down, drive guide rail cylinder 51 and move down, finish a working cycles.
The utility model also can be arranged side by side overlapping bearing through hole device more, to form pipelining, increases work efficiency.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a bearing cross hole device is used for the endoporus that is pressed into drag cup motor case middle (center) bearing is carried out the through hole correction; It is characterized in that, comprising:
Detent mechanism is used for carrying and locatees described casing;
Clamping device is positioned at the top of described detent mechanism, is used for the casing of being located on the described detent mechanism is fixed;
Through hole mechanism is used for the bearing of the described casing after fixing is carried out the through hole correction, and it comprises the through hole axle that is positioned at described detent mechanism below;
Actuating unit is used for described through hole mechanism is provided the power of through hole; And
Control system is used for said mechanism is controlled automatically.
2. bearing cross hole device as claimed in claim 1 is characterized in that: described detent mechanism comprises positioning fixture and supports the supporting component of described positioning fixture; Described positioning fixture top offers the support holes of the described casing of carrying, and described support holes bottom offers and the coaxial positioning through hole of described casing middle (center) bearing.
3. bearing cross hole device as claimed in claim 2 is characterized in that: described supporting component comprises the fixed head of fixing described positioning fixture and supports the support column of described fixed head.
4. bearing cross hole device as claimed in claim 2 is characterized in that: described clamping device comprises the clamping hand that is used for the described casing of clamping and drives described clamping hand clamping and the clamping cylinder that unclamps described casing; Described clamping hand is arranged at described positioning fixture top.
5. bearing cross hole device as claimed in claim 4 is characterized in that: described through hole mechanism also comprise the described through hole axle of clamping clamping piece, slide block, be set on the described clamping piece and be installed on sleeve in the described slide block, erect the guide pillar that is provided with and promote the through hole cylinder that described slide block slides up and down; Described slide block is slidingly mounted on the described guide pillar; Described sleeve rotates and is installed in the described slide block.
6. bearing cross hole device as claimed in claim 5 is characterized in that: described through hole mechanism also comprises the through hole bearing; Described through hole bearing holder (housing, cover) is loaded on the described sleeve, and is installed on together in the described slide block.
7. bearing cross hole device as claimed in claim 5 is characterized in that: described actuating unit comprises motor, be installed on drive pulley on the described motor output shaft, be set in the driven pulley on the described sleeve and be sheathed on described drive pulley and described driven pulley on belt.
8. as each described bearing cross hole device of claim 1-7, it is characterized in that: also comprise the described casing and the bearing receiving mechanism thereof that are used to collect behind the through hole, described receiving mechanism and described clamping device are fixedly linked.
9. bearing cross hole device as claimed in claim 8 is characterized in that, described receiving mechanism comprises:
The guide rail cylinder is fixedlyed connected with described detent mechanism, and promotes described detent mechanism and move horizontally;
Cylinder links to each other with described guide rail cylinder up and down, and promotes described guide rail cylinder and move up and down, and then drives described detent mechanism and move up and down; And
Hopper is arranged at described detent mechanism below, is used to reclaim described casing and bearing thereof behind the through hole.
10. bearing cross hole device as claimed in claim 9 is characterized in that: described receiving mechanism also comprises limiting plate and slide plate up and down; Described cylinder up and down links to each other with described guide rail cylinder by described slide plate up and down; Described limiting plate is located at the described below of slide plate up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220696723 CN203091880U (en) | 2012-12-17 | 2012-12-17 | Bearing perforating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220696723 CN203091880U (en) | 2012-12-17 | 2012-12-17 | Bearing perforating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203091880U true CN203091880U (en) | 2013-07-31 |
Family
ID=48843324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220696723 Expired - Fee Related CN203091880U (en) | 2012-12-17 | 2012-12-17 | Bearing perforating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203091880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042274A (en) * | 2012-12-17 | 2013-04-17 | 深圳市双环全新机电股份有限公司 | Bearing bore passing device |
-
2012
- 2012-12-17 CN CN 201220696723 patent/CN203091880U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042274A (en) * | 2012-12-17 | 2013-04-17 | 深圳市双环全新机电股份有限公司 | Bearing bore passing device |
| CN103042274B (en) * | 2012-12-17 | 2014-12-10 | 深圳市双环全新机电股份有限公司 | Bearing bore passing device |
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| 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: 20130731 Termination date: 20161217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |