CN206937021U - A kind of arc locking face Twp-sided polishing machine - Google Patents
A kind of arc locking face Twp-sided polishing machine Download PDFInfo
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- CN206937021U CN206937021U CN201720103287.XU CN201720103287U CN206937021U CN 206937021 U CN206937021 U CN 206937021U CN 201720103287 U CN201720103287 U CN 201720103287U CN 206937021 U CN206937021 U CN 206937021U
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Abstract
It the utility model is related to lockset manufacture field, more particularly to a kind of arc locking face Twp-sided polishing machine.A kind of arc locking face Twp-sided polishing machine, including frame, and the feeding track being arranged in frame, and for conveying the feed mechanism of lock body, and the polishing mechanism for being polished to the lock body on feeding track along the orbital direction of feeding track；The polishing mechanism has two groups, and material stirring-up mechanism is provided between two groups of polishing mechanisms.The polishing machine can be polished to the arc locking face of lock body, after lock body is by the charging section feeding of feeding track, into feeding section, under the push of feeding section, the side cambered surface of lock body is polished by positive mirror polish section, then realizes 180 ° of upsets by upset section, the opposite side cambered surface of lock body is polished by reverse side polishing section, blanking is finally carried out by blanking section, such polishing machine replaces traditional artificial polishing operation, so as to greatly promote lockset processing efficiency.
Description
Technical field
It the utility model is related to lockset manufacture field, more particularly to a kind of arc locking face Twp-sided polishing machine.
Background technology
Padlock is most ancient, the also most species of recoverable amount in current lockset industry, it may be said that other locksets be all from
In this class of padlock multiply, derive from.Being equipped with the lock body of padlock can be with the ring-type of snapping or the metal of " one " word shape
" lock bridge " stalk, i.e., make padlock directly turn into enclosed shape lockset with lock body snapping by lock bridge.At present, the polishing of padlock is mainly
Mechanical polishing, i.e., on certain mechanical device, with the corresponding way of contact, and under certain pressure effect, make to transport at a high speed
The polishing wheel turned contacts generation friction with lockset workpiece surface, and the surplus of lockset finished surface is gradually abraded or rubbing down is smooth
Technique.
As Application No. " 2015102085634 " Chinese patent in recorded a kind of automatic polishing machine, the polishing machine is adopted
End face polishing is carried out to the lock body of quadrangular shape with pipeline system, quadrangular shape realizes upset between each orbital segment, so as to
It is complete to six end surface grindings of lockset that a streamline can be achieved, automaticity is high.But existing part padlock body is arc
It is in cambered surface that face lock body, i.e. lock body, which have two opposing end surfaces, for such padlock, automatic polishing machine described in above-mentioned Chinese patent without
Method is polished, because the polishing structure of the polishing machine can not be bonded cambered surface adjustment.Therefore, the cambered surface lock body polishing of existing padlock
The stage manually polished is also rested on, polishing effect is bad, and processing efficiency is low, need to improve.
The content of the invention
In order to solve the above problems, the purpose of this utility model is to provide a kind of polishing effect good, high in machining efficiency
Arc locking face Twp-sided polishing machine.
In order to realize above-mentioned purpose, the utility model employs following technical scheme：
A kind of arc locking face Twp-sided polishing machine, including frame, and the feeding track being arranged in frame, and for edge
The feed mechanism of the orbital direction conveying lock body of feeding track, and the polishing for being polished to the lock body on feeding track
Mechanism；The polishing mechanism has two groups, and material stirring-up mechanism is provided between two groups of polishing mechanisms；It is characterized in that：The feeding track
Feed zone, feeding section, positive mirror polish section, upset section, reverse side polishing section and blanking section are divided into along its feed direction；
Feeding material component of the feed mechanism including being arranged on feeding section both sides, and synchronous two groups of feeding material components of driving
Feeding motor, feeding material component include feeding belt, and the drive pulley and driven pulley of the positioning feeding belt；Send
Feeding belt in material component is arranged on feeding track both sides as track side plate, feeding belt and the track side plate of its upstream and downstream
Mutually accept；The conveying direction of the operative end surface of feeding track both sides feeding belt is identical；
Two groups of polishing mechanisms are separately positioned in positive mirror polish section and reverse side polishing section, and polishing mechanism includes polishing motor,
And the polishing abrasive belt positioned by active abrasive belt wheel and driven abrasive belt wheel, and for acting on the pinch roller dress of the polishing abrasive belt
Put；The polishing abrasive belt is in above positive mirror polish section, and pressing wheel device includes pinch roller frame, and two be arranged on pinch roller frame
Pinch roller；Two pinch rollers are respectively at feeding track both sides, and pinch roller is in above the lower band body of polishing abrasive belt, the rolling of pinch roller
Direction is identical with the loop direction of the polishing abrasive belt, and the pinch roller oppresses downwards the lower band body of polishing abrasive belt, the lower end of pinch roller
Face is highly not higher than the height of feeding track；
The material stirring-up mechanism be arranged on upset section feeding track in, material stirring-up mechanism include first body of rod, second body of rod and
3rd body of rod, first body of rod and second body of rod are undertaken on the positive mirror polish section downstream of feeding track；First body of rod and second body of rod
It is separately positioned in the interior sidewall surface of two blocks of track side plates, the initiating terminal level height of first body of rod is less than the rail of positive mirror polish section
Road level height, first body of rod tilt upward along feed direction, and the body of rod length of first body of rod is more than the body of rod length of second body of rod
Degree；The initiating terminal level height of second body of rod is higher than the lock body level height in positive mirror polish section, and second body of rod is along feeding
Direction is diagonally downward；The initiating terminal of 3rd body of rod is undertaken on the end of second body of rod, the initiating terminal of the 3rd body of rod and
The end of bipole body is flush；The body of rod direction of 3rd body of rod is tilted towards first body of rod, and the 3rd body of rod passes through described first
Below the body of rod.
Preferably, the polishing abrasive belt upstream position is provided with directive wheel, the rotating direction of directive wheel and delivery track
Conveying direction is consistent, and the lower surface of directive wheel is not higher than the lower belt surface height of the polishing abrasive belt on feeding track.The technical side
In case, by setting directive wheel to push down the lock body on track, prevent lock body end face from compressing polishing abrasive belt, cause lock body can not
In push-in polishing station.
Preferably, the feed zone of the feeding track is initiating terminal, initiating terminal is in eminence, and with feed direction arc
Shape is downward, finally tends to be horizontal in front of feeding section.
Preferably, constituting rail groove between two blocks of track side plates and sole-plate, set on track side plate more
The feed direction of the linear regulating tank of bar, regulating tank direction and track is perpendicular, and track side plate is fixed on regulating tank, to adjust
Spacing between two blocks of track side plates.
Preferably, spacing is not more than spacing between two blocks of track side plates between two feeding belts.
Preferably, be provided with pedestal prismatic pair in the frame, the moving direction of pedestal prismatic pair and feeding track
Feed direction is perpendicular, and the feeding material component of wherein side is fixed on the pedestal prismatic pair.
Preferably, the output end of the polishing motor is connected with active abrasive belt wheel, polishing abrasive belt tensioner is set in master
On dynamic abrasive belt wheel and driven abrasive belt wheel, polishing motor drives the polishing abrasive belt cycle rotation.Abrasive belt wheel branch is provided with frame
Frame, abrasive band wheel support include two slide bars, and driven abrasive belt wheel is slidably arranged on the slide bar by external sliding block, the cunning
Spring, polishing abrasive belt and spring are also arranged with bar and reaches balance for the active force of driven abrasive belt wheel.
Preferably, frame, which is provided with, vertically moves pair, vertically move pair and be provided with transverse shifting pair, pinch roller frame is fixed on
In transverse shifting pair.
Preferably, setting band tooth on the feeding belt medial surface, drive pulley and driven pulley are gear.
The utility model uses above-mentioned technical proposal, and the technical scheme is related to a kind of arc locking face Twp-sided polishing machine, the throwing
Ray machine can be polished to the arc locking face of lock body, after lock body is by the charging section feeding of feeding track, into feeding section, in feeding
Under the push of section, the side cambered surface of lock body is polished by positive mirror polish section, then realizes 180 ° of upsets by upset section,
The opposite side cambered surface of lock body is polished by reverse side polishing section, blanking, such polishing machine generation are finally carried out by blanking section
For traditional artificial polishing operation, so as to greatly promote lockset processing efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of polishing mechanism.
Fig. 3 is the structural representation of material stirring-up mechanism.
Embodiment
Below in conjunction with the accompanying drawings, preferred embodiment of the present utility model is described in further detail.
A kind of arc locking face polishing machine as shown in Fig. 1 ~ 3, including frame 1, and the feeding track being arranged in frame 1
2, and for conveying the feed mechanism 3 of lock body along the orbital direction of feeding track 2, and for the lock on feeding track 2
The polishing mechanism 4 that body is polished.The polishing mechanism 4 has two groups, and material stirring-up mechanism 5 is provided between two groups of polishing mechanisms 4.It is described
3, two groups of polishing mechanisms 4 of feed mechanism are set gradually along feed direction in the frame 1 of the both sides of feeding track 2, and material stirring-up mechanism 5 is set
In feeding track 2 between two groups of polishing mechanisms 4.
The feeding track 2 is divided into feed zone 21, feeding section 22, positive mirror polish section 23, upset along its feed direction
Section 24, reverse side polishing section 25 and blanking section 26.The initiating terminal of the feeding track 2 is feed zone 21, and initiating terminal is in eminence, and
As feed direction arc is downward, finally tend to be horizontal in the front of feeding section 22.The feeding track 2 includes sole-plate 27,
And it is arranged on two blocks of track side plates 28 on sole-plate 27.Rail is constituted between two blocks of track side plates 28 and sole-plate 27
Road groove, sets a plurality of linear regulating tank on track side plate 28, and the feed direction of regulating tank direction and track is perpendicular, rail side
Plate 28 is fixed on regulating tank, to adjust the spacing between two blocks of track side plates 28, that is, track well width is adjusted, suitable for difference
The lock body conveying of size.
The feed mechanism 3 is arranged on the both sides of feeding section 22, and feed mechanism 3 includes being arranged on sending for the both sides of feeding track 2
Expect component, and the feeding motor of two groups of feeding material components of synchronous driving.The feeding material component includes feeding belt 32, and positioning
The drive pulley 33 and driven pulley 34 of the feeding belt 32.In the feeding section 22, feeding track 2 only retains track
Bottom plate 27, and track side plate 28 is cancelled, the feeding belt 32 in two groups of feeding material components is arranged on the both sides of sole-plate 27 and is used to replace
For track side plate 28, feeding belt 32 and the phase of track side plate 28 of its upstream and downstream are accepted, and spacing between two feeding belts 32
It is not more than（It is typically chosen as being slightly less than）Spacing between two blocks of track side plates 28.It is just as stated above, due to the lock body for needing to process
Size is variant, therefore spacing needs are controllable between bar feeding belt 32, thus pedestal movement is provided with the frame 1
Pair 35, the feed direction of the moving direction and feeding track 2 of pedestal prismatic pair 35 is perpendicular, and pedestal prismatic pair 35 can use screw mandrel
Structure or other common structures realize movement, and the feeding material component of wherein side is fixed on the pedestal prismatic pair 35.The feeding
Motor drives the cycle rotation of feeding belt 32 by chain drive drive pulley 33, thereby ensures that the feeding belt 32 of both sides
Synchronism；And by the setting of chain track, ensure the loop direction of feeding belt 32 of both sides on the contrary, thus sending both sides
Expect that the conveying direction of the operative end surface of belt 32 is identical, operative end surface refers to the end face for alternate track side plate 28.In feeding
During, lock body is driven into feed mechanism 3 by the potential energy of feeding track 2, and two in feed mechanism 3 feeding belt 32 presss from both sides
Firmly lock body side, driving lock body move ahead；The feeding power in the downstream of feeding section 22 is to drive lock body to push away forward by feed mechanism 3
OK.Further in order to ensure smooth feeding, on the one hand need to use Belt Conveying, because the frictional force of belt and lock body is larger
Lock body can be carried out, and belt will not cause to wear to lock body side；On the other hand, band is set on the medial surface of feeding belt 32
Tooth, drive pulley 33 and driven pulley 34 are gear；Belt slippage can be so avoided, causes both sides feeding belt 32 not
The problem of synchronous.
Two groups of polishing mechanisms 4 are separately positioned in the positive mirror polish section 23 and reverse side polishing section 25 of feeding track 2, are thrown
Ray machine structure 4 includes polishing motor, and the polishing abrasive belt 44, Yi Jiyong positioned by active abrasive belt wheel 42 and driven abrasive belt wheel 43
In the pressing wheel device for acting on the polishing abrasive belt 44.The output end of the polishing motor is connected with active abrasive belt wheel 42, polishing
The tensioner of abrasive band 44 is set on active abrasive belt wheel 42 and driven abrasive belt wheel 43, and polishing motor drives the circulation of polishing abrasive belt 44 to turn
It is dynamic.Abrasive band wheel support 451 is provided with frame 1, abrasive band wheel support 451 includes two slide bars 452, and driven abrasive belt wheel 43 is by outer
The sliding block connect is slidably arranged on the slide bar 452, and spring 453, polishing abrasive belt and spring pair are also arranged with the slide bar 452
Reach balance in the active force of driven abrasive belt wheel, so as to be polishing abrasive belt 44 is reduced as far as possible during cycle rotation
It shakes.In addition, also position adjustment can be carried out to driven abrasive belt wheel 43 by the movement of sliding block, so as to be easy to polishing abrasive belt 44
Installation.
The polishing abrasive belt 44 is in the top of feeding track 2, and pressing wheel device includes being fixed in frame 1 vertically moving pair
46, and the transverse shifting pair 47 vertically moved in pair 46 is arranged on, and the pinch roller assembly being fixed in transverse shifting pair 47；
Pair 46 and the transverse shifting pair 47 of vertically moving can use screw body or other common structures to realize mobile regulation, longitudinal direction
Prismatic pair 46 is used for the longitudinal direction height for adjusting pinch roller assembly, and transverse shifting pair 47 is used for the lateral attitude for adjusting pinch roller assembly.Pressure
Wheel assembly includes the pinch roller frame 48 being fixed in transverse shifting pair 47, and two pinch rollers 49 being arranged on pinch roller frame 48.Two
Individual pinch roller 49 is respectively at the both sides of feeding track 2, and pinch roller 49 is in above the lower band body of polishing abrasive belt 44, the rolling of pinch roller 49
Dynamic direction is identical with the loop direction of the polishing abrasive belt 44, by vertically moving pair 46 and the adjustment of transverse shifting pair 47 during use
The position of pinch roller 49, makes pinch roller 49 oppress the lower band body of polishing abrasive belt 44 downwards, and the lower surface of pinch roller 49 is highly not higher than feeding rail
The height in road 2, in this way, driving lower band body the sending between by two pinch rollers 49, and two pinch rollers 49 of polishing abrasive belt 44
It is in arch-shaped during material track 2, polishing abrasive belt 44 is compressed by pinch roller 49, and the lower belt surface tensioner of polishing abrasive belt 44 fits in feeding track
Lock body arcwall face on 2 is polished.Further, because polishing abrasive belt 44 is compressed by pinch roller 49, can produce lock body can not push away
In the polishing station for entering feeding track 2, therefore directive wheel 40, the rolling of directive wheel 40 are provided with the upstream position of polishing abrasive belt 44
Dynamic direction is consistent with the conveying direction of delivery track, and the lower surface of directive wheel 40 is not higher than the polishing abrasive belt on feeding track 2
44 zone face height, by setting the directive wheel 40 to carry out compression importing to the lock body arcwall face on feeding track 2, avoids this
Lock body can not be pushed into the feeding track 2 of the lower section of polishing abrasive belt 44, so as to which the phenomenon for the shutdown that causes to get stuck occurs.
The material stirring-up mechanism 5 includes first body of rod 51, second body of rod 52 and the 3rd body of rod 53, first body of rod 51 and the second bar
Body 52 is undertaken on the positive downstream of mirror polish section 23 of feeding track 2.First body of rod 51 and second body of rod 52 are separately positioned on upset section
In the interior sidewall surface of 24 two blocks of track side plates 28, the initiating terminal level height of first body of rod 51 is less than the rail of positive mirror polish section 23
Road level height, first body of rod 51 tilt upward along feed direction, and the body of rod length of first body of rod 51 is more than second body of rod 52
Body of rod length.The initiating terminal level height of second body of rod 52 is higher than the lock body level height in positive mirror polish section 23, and second
The body of rod 52 along feed direction diagonally downward.The initiating terminal of 3rd body of rod 53 is undertaken on the end of second body of rod 52, and the 3rd
The end of the initiating terminal of the body of rod and second body of rod is flush；The body of rod direction of 3rd body of rod 53 is tilted towards first body of rod 51, and
3rd body of rod 53 passes through the lower section of first body of rod 51.When equipment is run, front polishing is carried out by positive mirror polish section 23
Afterwards, lock body enters upset section 24；At upset section 24 top, lock body is oblique, and lock body side is ridden on first body of rod 51, another
Side is in below second body of rod；As lock body transports, because first body of rod 51 is obliquely installed and more and more higher, lock body increasingly inclines
Tiltedly；After lock body touches the 3rd body of rod 53, lock body gradually tilts toward opposite side, because the 3rd body of rod 53 is tilted towards the first bar
Body 51, the lock body lower surface of heeling condition is pressed against track side, and lock body upper surface is then inclined in the presence of first body of rod 51
Tiltedly, 180 ° of upsets of lock body are finally realized.
Polishing machine in such scheme can be polished to the arc locking face of lock body, lock body by feeding track 2 feed zone
After 21 chargings, into feeding section 22, under the push of feeding section 22, carried out by the side cambered surface of positive 23 pairs of lock bodies of mirror polish section
Polishing, 180 ° of upsets then are realized by upset section, the opposite side cambered surface that 25 pairs of lock bodies of section are polished by reverse side is polished, most
Blanking is carried out by blanking section 26 afterwards, such polishing machine replaces traditional artificial polishing operation, so as to greatly promote lockset processing
Efficiency.It is further to note that upstream and downstream signified in such scheme is using the feed direction of feeding track as foundation,
It is not absolute position and upstream and downstream is relative position.
Claims (9)
1. a kind of arc locking face Twp-sided polishing machine, including frame, and the feeding track being arranged in frame, and given for edge
Expect the feed mechanism of the orbital direction conveying lock body of track, and the polishing machine for being polished to the lock body on feeding track
Structure；The polishing mechanism has two groups, and material stirring-up mechanism is provided between two groups of polishing mechanisms；It is characterized in that：The feeding track edge
Its feed direction is divided into feed zone, feeding section, positive mirror polish section, upset section, reverse side polishing section and blanking section；
The feed mechanism includes the feeding material component for being arranged on feeding section both sides, and the feeding of two groups of feeding material components of synchronous driving
Motor, feeding material component include feeding belt, and the drive pulley and driven pulley of the positioning feeding belt；Feeding group
Feeding belt in part is arranged on feeding track both sides and mutually held as track side plate, feeding belt and the track side plate of its upstream and downstream
Connect；The conveying direction of the operative end surface of feeding track both sides feeding belt is identical；
Two groups of polishing mechanisms are separately positioned in positive mirror polish section and reverse side polishing section, and polishing mechanism includes polishing motor, and
The polishing abrasive belt positioned by active abrasive belt wheel and driven abrasive belt wheel, and for acting on the pressing wheel device of the polishing abrasive belt；
The polishing abrasive belt is in above positive mirror polish section, and pressing wheel device includes pinch roller frame, and two pressures being arranged on pinch roller frame
Wheel；Two pinch rollers are respectively at feeding track both sides, and pinch roller is in above the lower band body of polishing abrasive belt, the rolling square of pinch roller
To identical with the loop direction of the polishing abrasive belt, the pinch roller oppresses downwards the lower band body of polishing abrasive belt, the lower surface of pinch roller
Highly it is not higher than the height of feeding track；
The material stirring-up mechanism is arranged in the feeding track of upset section, and material stirring-up mechanism includes first body of rod, second body of rod and the 3rd
The body of rod, first body of rod and second body of rod are undertaken on the positive mirror polish section downstream of feeding track；First body of rod and second body of rod difference
It is arranged in the interior sidewall surface of two blocks of track side plates, the initiating terminal level height of first body of rod is less than the track water of positive mirror polish section
Flat height, first body of rod tilt upward along feed direction, and the body of rod length of first body of rod is more than the body of rod length of second body of rod；Institute
The initiating terminal level height for stating second body of rod is inclined higher than the lock body level height in positive mirror polish section, second body of rod along feed direction
Obliquely；The initiating terminal of 3rd body of rod is undertaken on the end of second body of rod, the initiating terminal and second body of rod of the 3rd body of rod
End be flush；The body of rod direction of 3rd body of rod is tilted towards first body of rod, and the 3rd body of rod is passed through under first body of rod
Side.
A kind of 2. arc locking face Twp-sided polishing machine according to claim 1, it is characterised in that：Polishing abrasive belt upstream position
Directive wheel is installed, the rotating direction of directive wheel is consistent with the conveying direction of delivery track, and the lower surface of directive wheel is not higher than
The lower belt surface height of polishing abrasive belt on feeding track.
A kind of 3. arc locking face Twp-sided polishing machine according to claim 1, it is characterised in that：The charging of the feeding track
Section is initiating terminal, and initiating terminal is in eminence, and as feed direction arc is downward, finally tends to be horizontal in front of feeding section.
A kind of 4. arc locking face Twp-sided polishing machine according to claim 3, it is characterised in that：Two blocks of track side plates with
Rail groove is constituted between sole-plate, a plurality of linear regulating tank is set on track side plate, regulating tank direction and track are sent
Expect that direction is perpendicular, track side plate is fixed on regulating tank, to adjust the spacing between two blocks of track side plates.
A kind of 5. arc locking face Twp-sided polishing machine according to claim 4, it is characterised in that：Between between two feeding belts
Away from spacing between no more than two blocks track side plates.
A kind of 6. arc locking face Twp-sided polishing machine according to claim 1, it is characterised in that：Base is provided with the frame
Seat prismatic pair, the moving direction of pedestal prismatic pair and the feed direction of feeding track are perpendicular, and the feeding material component of wherein side is consolidated
It is scheduled on the pedestal prismatic pair.
A kind of 7. arc locking face Twp-sided polishing machine according to claim 1, it is characterised in that：The output of the polishing motor
End is connected with active abrasive belt wheel, and polishing abrasive belt tensioner is set on active abrasive belt wheel and driven abrasive belt wheel, polishing motor driving
The polishing abrasive belt cycle rotation；Abrasive band wheel support is provided with frame, abrasive band wheel support includes two slide bars, driven abrasive belt wheel
Be slidably arranged in by external sliding block on the slide bar, be also arranged with the slide bar spring, polishing abrasive belt and spring for
The active force of driven abrasive belt wheel reaches balance.
A kind of 8. arc locking face Twp-sided polishing machine according to claim 1, it is characterised in that：Frame is provided with and vertically moved
Pair, vertically move pair and be provided with transverse shifting pair, pinch roller frame is fixed in transverse shifting pair.
A kind of 9. arc locking face Twp-sided polishing machine according to claim 1, it is characterised in that：The feeding belt medial surface
Upper to set band tooth, drive pulley and driven pulley are gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103287.XU CN206937021U (en) | 2017-01-23 | 2017-01-23 | A kind of arc locking face Twp-sided polishing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103287.XU CN206937021U (en) | 2017-01-23 | 2017-01-23 | A kind of arc locking face Twp-sided polishing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206937021U true CN206937021U (en) | 2018-01-30 |
Family
ID=61356662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720103287.XU Expired - Fee Related CN206937021U (en) | 2017-01-23 | 2017-01-23 | A kind of arc locking face Twp-sided polishing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206937021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052956A (en) * | 2017-01-23 | 2017-08-18 | 张必葵 | A kind of arc locking face Twp-sided polishing machine |
-
2017
- 2017-01-23 CN CN201720103287.XU patent/CN206937021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052956A (en) * | 2017-01-23 | 2017-08-18 | 张必葵 | A kind of arc locking face Twp-sided polishing machine |
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| CF01 | Termination of patent right due to non-payment of annual fee |