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CN113927471B - Automatic grinding device for ceramic ferrule - Google Patents

Automatic grinding device for ceramic ferrule Download PDF

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Publication number
CN113927471B
CN113927471B CN202111234374.6A CN202111234374A CN113927471B CN 113927471 B CN113927471 B CN 113927471B CN 202111234374 A CN202111234374 A CN 202111234374A CN 113927471 B CN113927471 B CN 113927471B
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CN
China
Prior art keywords
grinding
ferrule
channel
ceramic
ceramic ferrule
Prior art date
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Active
Application number
CN202111234374.6A
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Chinese (zh)
Other versions
CN113927471A (en
Inventor
胡雪松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Songxun Technology Co ltd
Original Assignee
Ningbo Songxun Technology Co ltd
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Priority to CN202111234374.6A priority Critical patent/CN113927471B/en
Publication of CN113927471A publication Critical patent/CN113927471A/en
Application granted granted Critical
Publication of CN113927471B publication Critical patent/CN113927471B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00Lapping machines or devices; Accessories
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/0023Other grinding machines or devices grinding machines with a plurality of working posts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/0076Other grinding machines or devices grinding machines comprising two or more grinding tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00Lapping machines or devices; Accessories
    • B24B37/27Work carriers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00Lapping machines or devices; Accessories
    • B24B37/34Accessories
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00Lapping machines or devices; Accessories
    • B24B37/34Accessories
    • B24B37/345Feeding, loading or unloading work specially adapted to lapping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • B24B49/04Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B57/00Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
    • B24B57/02Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

The application discloses automatic grinder of ceramic lock pin includes: the clamp assembly is provided with an accommodating channel; the ceramic ferrule can be arranged in the accommodating channel; the detection mechanism is used for detecting whether the ceramic ferrule is upward in front; the feeding mechanism is connected with the detection mechanism and used for conveying the ceramic ferrule to be ground to the accommodating channel or the material frame; and the material frame is used for storing the ceramic ferrule to be ground. The detection mechanism is connected with the feeding mechanism, so that the detection of the material in the transportation process is realized, and specifically, whether the ceramic ferrule is front-up or not is detected. And then conveying the qualified ceramic ferrule to a containing channel of the clamp assembly, and conveying the unqualified ceramic ferrule to a material frame to wait for the next grinding. The ceramic ferrule grinding device realizes the integral grinding process of the ceramic ferrule, and is high in automation degree and production efficiency.

Description

Automatic grinding device for ceramic ferrule
Technical Field
The application relates to the technical field of ceramic ferrule processing equipment, in particular to an automatic grinding device for a ceramic ferrule.
Background
The ceramic ferrule is a key part in the optical fiber connector and has the characteristics of high strength, good corrosion resistance, good insulating property, smooth surface, long service life and the like. The center of the existing ceramic ferrule is provided with a micropore for precisely positioning the optical fiber connection. The machining precision requirement of the central inner hole of the optical fiber ceramic lock pin is high, the machining mechanical equipment requirement is also high, the ceramic lock pin needs to penetrate into a steel wire when the inner hole is ground, a ceramic lock pin blank to be ground is fixed on a clamp, a steel wire adhered with grinding liquid penetrates through micropores of the ceramic lock pin blank, the clamp is driven to rotate, the steel wire is drawn back and forth, the micropores are ground by abrasive particles moving at an accelerating speed in the grinding liquid, the ceramic lock pin with the required micropores is obtained, the existing inner hole grinding automation degree is not high, and automatic machining of one procedure can be realized.
Chinese patent application "inner hole grinding device of ceramic ferrule", application (patent) No.: CN201721599348.2 discloses a polishing machine comprising a clamping mechanism, a polishing mechanism, a feeding mechanism, a polishing liquid supply assembly and a driving mechanism. The grinding mechanism is arranged on the processing station and comprises a grinding wire which can extend into the inner hole of the ceramic ferrule. The feeding mechanism is arranged on the feeding station. The grinding fluid supply assembly is internally provided with a ceramic ferrule inner hole grinding fluid. The driving mechanism is in driving connection with the clamping mechanism, can drive the clamping mechanism to move to the feeding station, and then works in cooperation with the feeding mechanism, and can drive the clamping mechanism to move to the processing station, and then works in cooperation with the clamping mechanism. The grinding fluid supply assembly is arranged on the moving path of the clamping mechanism. The inner hole grinding device for the ceramic ferrule can automatically realize the whole grinding working procedure of the ceramic ferrule, has high automation degree and greatly improves the production efficiency.
I have designed a kind of pottery lock pin, this pottery lock pin surface is provided with the V-arrangement groove and is used for installing optic fibre. The existing grinding equipment is used for machining round holes and cannot be used for machining V-shaped grooves. It is therefore necessary to design a new grinding device for machining the ferrule. In addition, the prior ceramic ferrule inner hole processing is not provided with the front and back directions during ceramic ferrule feeding. However, the V-groove is required to be machined on the upper plane of the ferrule, and if the upper and lower surfaces of the ferrule are reversed, the machined ferrule cannot be used.
Disclosure of Invention
An object of the present application is to provide an automatic grinding device of ceramic lock pin, set up feed mechanism, detection mechanism and grinding mechanism, the automatic feeding of ceramic lock pin, detection, process automation such as grind are realized.
Another object of the present application is to provide an automatic grinding device for a ceramic ferrule, which effectively improves the machining precision of the ceramic ferrule.
Another object of the present application is to provide an automatic grinding device for a ceramic ferrule, which can greatly accelerate the processing speed and improve the processing efficiency.
Another object of the present application is to provide an automatic grinding device for a ceramic ferrule, which has a simple structure and low cost.
The technical scheme that this application adopted is: an automatic grinding device for a ceramic ferrule comprises,
the clamp assembly is provided with an accommodating channel; the ceramic ferrule can be arranged in the accommodating channel;
the detection mechanism is used for detecting whether the ceramic ferrule is upward in front;
the feeding mechanism is connected with the detection mechanism and used for conveying the ceramic ferrule to be ground to the accommodating channel or the material frame;
and the material frame is used for storing the ceramic ferrule to be ground.
Compared with the prior art, the ceramic ferrule has the advantages that the detection mechanism is connected with the feeding mechanism, so that the detection of the material in the transportation process is realized, and specifically, whether the ceramic ferrule is front-up or not is detected. In the application, one side surface to be processed of the ceramic ferrule is the front surface. The acceptable ferrules (i.e., the right-side-up ferrules) are then transferred to the receiving channels of the fixture assembly, while the unacceptable ferrules (i.e., the non-right-side-up ferrules) are transferred to the material frame for subsequent grinding. The ceramic ferrule grinding device realizes the integral grinding process of the ceramic ferrule, and is high in automation degree and production efficiency.
In some embodiments of the present application, the present application further includes a power mechanism.
In some embodiments of the present application, the present application further includes two grinding mechanisms disposed on a left side and a right side, the grinding mechanism includes a grinding head connected to the power mechanism, and the power mechanism drives the grinding head to move up and down and grind.
In some embodiments of the present application, the length of the polishing head is compatible with the length of the receiving channel. The grinding head can simultaneously act on the surface of the ceramic ferrule in the accommodating channel under the action of pressure, so that synchronous grinding is realized.
Preferably, the length of the grinding bit is greater than the length of the receiving channel. Therefore, when the grinding head reciprocates, the whole surface of the part to be ground of all the ceramic ferrules is always ground by the grinding head.
And the ceramic ferrule in the accommodating channel is always stressed, so that the stability in the grinding process is better. Secondly, the whole surface of the part to be ground of the ceramic ferrule is always in contact with the grinding head for grinding, so that the processing progress of the V-shaped groove of the ceramic ferrule is consistent, one end of the V-shaped groove is not deeper, one end of the V-shaped groove is shallower, and the processing precision of the ceramic ferrule is effectively improved.
The grinding mechanism comprises a tool rest, wherein the grinding head is arranged on the tool rest and can be detached from the tool rest. After long-term use, the grinding head can be worn and torn inevitably, so that the cost for replacing the whole grinding mechanism is obviously too high, the grinding head and the tool rest are arranged to be detachable, and after the grinding head is worn and worn, only the grinding head can be replaced, so that the use cost of the grinding head is reduced.
In some embodiments of the present application, the present application further includes a slurry supply assembly having a slurry disposed therein for providing slurry to the ferrule. The grinding fluid supply assembly is positioned between the two grinding mechanisms.
In some embodiments of the present application, the clamp assembly includes two clamps with a gap therebetween, and the power mechanism drives the clamp assembly back and forth between the two grinding mechanisms. The distance between the two clamps is equal to the distance between the grinding head and the grinding fluid supply assembly.
Specifically, when the power mechanism drives one clamp to move to the position below the grinding head of the grinding mechanism, the other clamp is positioned below the grinding fluid supply assembly.
More specifically, when one of the clamps moves below the grinding head, the grinding head starts to grind under the action of the power mechanism; and the other clamp is positioned below the grinding fluid supply assembly, and the grinding fluid supply assembly supplies grinding fluid to the ceramic ferrule in the other clamp.
The polishing liquid and the polishing process are simultaneously carried out, so that the processing speed can be greatly increased, and the processing efficiency is improved.
In some embodiments of the present application, the feed mechanism include the transport seat, the transport seat include two fixed transport blocks and two movable transport blocks, the transport seat on be provided with the derivation hole of intercommunication material frame, the derivation hole be located between two fixed transport blocks.
In some embodiments of the present application, the feeding mechanism includes a material channel and a vibration disc, the vibration disc is connected with the material channel, and the material channel is connected with the clamp assembly through a conveying seat.
Specifically, a large number of ceramic ferrules are in a vibratory pan that operates to align and transport the ceramic ferrules to the material path.
In some embodiments of the present application, the detection mechanism includes a detection head disposed at one end of the material path.
In some embodiments of the present application, the two movable conveying blocks are a first conveying block and a second conveying block, respectively, the first conveying block is located between the two fixed conveying blocks, and the power mechanism drives the first conveying block to move.
Specifically, the first conveying block moves to expose the guiding-out hole or to shield the guiding-out hole and connect the two fixed conveying blocks.
More specifically, if the export hole is naked, two fixed conveying blocks are not communicated, and the ceramic lock pin can not pass through the conveying seat, but can fall into the export hole under the action of gravity to import the material frame.
More specifically, the detection mechanism is connected with the power mechanism, and the power mechanism drives the second conveying block to move according to the detection result of the detection mechanism.
In some embodiments of the present application, the fixed transport block interfaces with a clamp positioned below the slurry supply assembly.
If the first conveying block shields the guiding-out hole and is connected with the two fixing blocks, the ceramic ferrule can smoothly pass through the conveying seat and reach the inside of the accommodating channel of the clamp below the grinding fluid supply assembly.
In some embodiments of the present application, the power mechanism drives the second conveying block to move, and the moving second conveying block connects the material channel with the fixed conveying block.
In some embodiments of the present application, a pushing assembly is disposed on one side of the conveying seat, and the pushing assembly moves the ceramic ferrule on the pushing second conveying block to the fixed conveying block. The ceramic ferrule originally positioned on the fixed conveying block is pushed into the accommodating channel of the clamp. And similarly, gradually guiding the qualified ceramic ferrule into the accommodating channel of the clamp. And the unqualified ceramic ferrule is led out from a guiding-out hole on the conveying seat.
In this application, acceptable ceramic ferrules are individually introduced into the fixture below the slurry supply assembly. The ceramic ferrule is gradually pushed forward, and the grinding fluid supply assembly only needs to be at a preset position, and the grinding fluid is led out from the lower clamp.
In some embodiments of the present application, the surfaces of the first conveying block, the second conveying block and the fixed conveying block are all provided with accommodating grooves for accommodating the ceramic inner cores. Specifically, only one ceramic core can be accommodated in the accommodating groove.
In some embodiments of the present application, the accommodating channel is a straight channel, and a longitudinal section of the accommodating channel is adapted to a longitudinal section structure of the ferrule; the plurality of ceramic ferrules may be arranged within the receiving channel along a length direction of the receiving channel. The ceramic ferrule is installed and fixed by the clamping assembly in a manner different from the traditional ceramic ferrule, and the ceramic ferrule is provided with the accommodating channel. Because the structure of the accommodating channel is adapted to the ceramic ferrule, the moving direction of the ceramic ferrule is limited after the ceramic ferrule enters the accommodating channel, and particularly, the ceramic ferrule can only move along the length direction of the accommodating channel and cannot displace in other directions, and then the two ends of the accommodating channel are limited, so that the ceramic ferrule is fixed in the accommodating channel.
And the accommodating channel can accommodate a plurality of ceramic lock pins, namely, the ceramic lock pins can be limited at the same time. Compared with the ceramic ferrule grinding device on the market, the ceramic ferrule grinding device has the advantages of simple structure and lower cost.
In some embodiments of the present application, the clamp surface is provided with a notch, the notch is arranged along the length direction of the accommodating channel, and the notch is communicated with the accommodating channel. In this application, the width of notch is less than the width of ceramic lock pin, and the setting of notch does not influence the spacing of ceramic lock pin in anchor clamps promptly, and ceramic lock pin is located the accommodation channel all the time.
In this application, the slurry introduction receiving channel needs to pass through the notch. The grinding bit also needs to pass through the notch to act on the ferrule.
In this application, for placing and grinding a plurality of ferrules, there are the following problems: the as yet unground ferrule itself may have dimensional molding errors during the molding process. When the plurality of ceramic ferrules are positioned in the accommodating channel, a certain height difference exists among the plurality of ceramic ferrules, and the surface of the ceramic ferrule to be processed is the top surface of the ceramic ferrule. Then after the grinding bit is moved and pressed down, it is unavoidable that the grinding bit contacts the ferrule with a higher height and a gap exists between the grinding bit and the ferrule with a lower height. Then after the grinding heads are uniformly ground, the depths of the V-shaped grooves on different ceramic ferrules are different, and the machining precision is not high.
For the above, in some embodiments of the present application, a plurality of elastic members are installed in the fixture, the elastic members are in one-to-one correspondence with the ferrules in the accommodating channels, and the elastic members provide an upward force to the ferrules.
Specifically, the accommodating channel comprises a limiting surface, the limiting surface is the top surface of the accommodating channel, and the ceramic inner core positioned in the accommodating channel is in contact with the limiting surface. Of course, the force with which the ceramic core remains in contact with the stop surface comes from the spring. Therefore, the limiting surface in the accommodating channel is the datum surface for mounting the ceramic ferrule, and the machining precision of the whole ceramic ferrule can be ensured only by ensuring that the limiting surface is parallel to the bottom surface of the grinding head.
In some embodiments of the present application, the clamp sidewall is provided with an inlet, which communicates with the receiving channel. The receiving channel extends along its length and extends through the clip side wall. In this application, then, the ferrule enters the receiving channel and is pushed into the receiving channel from the entrance of the clamp.
The side wall of the clamp is provided with an outlet which is communicated with the accommodating channel, and the inlet and the outlet are respectively positioned at two ends of the accommodating channel. A ferrule disposed within the receiving channel is directed out of the outlet.
The lower part of the grinding mechanism is provided with two baffle blocks, and when the clamp moves to the lower part of the grinding mechanism, the inlet and the outlet of the clamp are blocked by the two baffle blocks. The application sets up the length of grinding passageway and can hold integer number ceramic inner core just, consequently when entry, export are kept off the back by the separation, and ceramic inner core is fixed at the holding passageway.
And when the ceramic ferrule in the first clamp is polished at the first polishing mechanism, and after the ceramic ferrule in the second clamp is introduced, the power mechanism drives the clamp assembly to move, so that the second clamp is moved to the second polishing mechanism for polishing. While at the same time the first grinding mechanism is moved to a position below the grinding fluid supply assembly, i.e. in abutment with the delivery seat. The conveying seat can continuously convey the ceramic ferrule to be processed into the accommodating channel of the first clamp, and the ceramic ferrule to be processed can eject the ceramic ferrule which is originally positioned in the accommodating channel of the first clamp and is polished out of the outlet.
Therefore, the finished frame is arranged below the grinding fluid supply assembly and corresponds to the outlet of the accommodating channel below the grinding fluid supply assembly.
The application only sets up the propelling movement subassembly of material loading, and does not need to set up the power structure and the propelling movement structure of unloading. The ceramic inner core is pushed to enter the accommodating channel through the pushing component, and the ceramic inner core in the accommodating channel is ejected out by the pushing component. The structure of the device is very simple, and the equipment cost is lower.
At this time, there are the following problems: when the ceramic ferrule is not placed in the accommodating channel, the elastic piece in the clamp is not blocked by the ceramic ferrule, and the elastic piece can be ejected upwards. The distance between the elastic member and the limiting surface of the accommodating channel is insufficient to accommodate the elastic member.
For the above, in some embodiments of the present application, the elastic member includes a post and a spring, the spring is installed below the post, and the post acts on the ferrule located in the receiving channel. Preferably, the top post is made of a material with a low friction coefficient.
The top column is provided with a guide surface. Specifically, the ceramic ferrule applies thrust to the guide surface of the jack post, and can drive the ceramic ferrule to move downwards, so that a space for the ceramic ferrule to enter is reserved.
Specifically, the top surface edge of jack-prop be provided with the chamfer, the chamfer constitutes the guide surface. The above structure, a columnar structure provided with a chamfer is an easy-to-process structure. The second ejector column is movable in the clamp, so that the ejector column is not limited by the movement stroke, and the ejector column cannot be displaced in the circumferential direction in the whole movement process. Then, in the application, the chamfer is provided on the jack post, and the chamfer is used as a guide surface, so that high reliability of force guiding can be ensured.
In some embodiments of the present application, the polishing head has a V-shaped longitudinal section.
Drawings
The present application will be described in further detail below in conjunction with the drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the present application. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 is a schematic view of a part of the structure of the present application;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic view of a clamp assembly and its peripheral structure;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a cross-sectional view of section BB of FIG. 5;
FIG. 7 is an enlarged view of a portion of FIG. 6 at A;
fig. 8 is a schematic structural view of the elastic member.
Wherein, the reference numerals specifically explain as follows: 1. a clamp; 2. an accommodation channel; 3. a notch; 4. a limiting surface; 51. an inlet; 52. an outlet; 6. a top column; 7. a spring; 8. a guide surface; 9. a ceramic ferrule;
10. a detection mechanism; 11. a detection head; 12. a grinding mechanism; 13. a grinding head; 14. a tool holder; 15. a slurry supply assembly;
21. a material channel; 22. a vibration plate; 23. a lead-out hole; 24. a conveying seat; 25. fixing a conveying block; 26. a first transport block; 27. a second transport block; 28. and pushing the assembly.
Detailed Description
The present application will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
An automatic grinding device for the ferrule 9 is shown in fig. 1, and is an embodiment of the present application: the device comprises a detection mechanism 10 for detecting whether the ceramic ferrule 9 is right-side-up; the feeding mechanism is connected with the detection mechanism 10 and is used for conveying the ceramic ferrule 9 to be ground to the accommodating channel 2 or the material frame; the detection mechanism 10 is connected with the feeding mechanism, so that the detection of the materials in the transportation process is realized, and specifically, whether the ceramic ferrule 9 faces upwards is detected. The clamp assembly is provided with an accommodating channel 2; the ceramic ferrule 9 can be arranged in the accommodating channel 2; the acceptable ferrule 9 (i.e., the right-side-up ferrule 9) is delivered to the receiving channel 2 of the fixture assembly. And the material frame is used for storing the ceramic ferrule 9 to be ground. The unacceptable ferrule 9 (i.e., the non-right-side-up ferrule 9) is transported to the material frame for the next grinding. The ceramic ferrule 9 is integrally ground, so that the automation degree is high, and the production efficiency is high. The present application also includes a power mechanism.
Based on the foregoing embodiment, as shown in fig. 1, another embodiment is provided, and the present application further includes two grinding mechanisms 12 disposed on a left side and a right side, where the grinding mechanisms 12 include a grinding head 13 connected to a power mechanism, and the power mechanism drives the grinding head 13 to move up and down and grind.
The length of the grinding bit 13 is adapted to the length of the receiving channel 2. Namely, the grinding head 13 can simultaneously act on the surface of the ceramic ferrule 9 in the accommodating channel 2 under the pressure, so as to realize synchronous grinding. Preferably, the length of the grinding bit 13 is greater than the length of the receiving channel 2. So that the entire surface of the portion to be ground of all the ferrules 9 is always ground by the grinding head 13 while the grinding head 13 is reciprocated.
Firstly, the ceramic ferrule 9 in the accommodating channel 2 is always stressed, and the stability in the grinding process is better. Secondly, the whole surface of the part to be ground of the ceramic ferrule 9 is always in contact with the grinding head 13 for grinding, so that the processing progress of the V-shaped groove of the ceramic ferrule 9 is consistent, one end of the V-shaped groove is not deeper, and the other end of the V-shaped groove is shallower, and the processing precision of the ceramic ferrule 9 is effectively improved.
The grinding mechanism 12 comprises a tool rest 14, the grinding head 13 is arranged on the tool rest 14, and the grinding head 13 is detachable from the tool rest 14. After long-term use, the grinding head 13 will be worn out inevitably, so that the replacement of the whole grinding mechanism 12 is obviously too high in cost, and therefore the grinding head 13 and the tool rest 14 are detachable, and after the grinding head 13 is worn out, only the grinding head 13 can be replaced, so that the use cost of the application is reduced.
Based on the foregoing embodiment, as shown in fig. 2 and 3, another embodiment is provided, and the application further includes a polishing liquid supply assembly 15, where the polishing liquid supply assembly 15 is configured to provide the polishing liquid to the ferrule 9. The slurry supply assembly 15 is positioned between the two polishing mechanisms 12.
The clamp assembly comprises two clamps 1 with a space, and a power mechanism drives the clamp assembly to move back and forth between two grinding mechanisms 12. The distance between the two clamps 1 is equal to the distance between the polishing head 13 and the polishing liquid supply assembly 15.
Specifically, when the power mechanism drives one of the clamps 1 to move below the polishing head 13 of the polishing mechanism 12, the other clamp 1 is located below the polishing liquid supply assembly 15.
More specifically, when one of the clamps 1 moves below the grinding head 13, the grinding head 13 starts to grind under the action of the power mechanism; while the other jig 1 is positioned below the polishing liquid supply assembly 15, the polishing liquid supply assembly 15 supplies the polishing liquid to the ferrule 9 in the other jig 1.
The polishing liquid and the polishing process are simultaneously carried out, so that the processing speed can be greatly increased, and the processing efficiency is improved.
Based on the foregoing embodiment, as shown in fig. 4 and 5, another embodiment is provided, where the feeding mechanism includes a conveying seat 24, the conveying seat 24 includes two fixed conveying blocks 25 and two movable conveying blocks, the conveying seat 24 is provided with a guiding hole 23 for communicating with a material frame, and the guiding hole 23 is located between the two fixed conveying blocks 25.
The feeding mechanism comprises a material channel 21 and a vibration disc 22, wherein the vibration disc 22 is connected with the material channel 21, and the material channel 21 is connected with the clamp assembly through a conveying seat 24. Specifically, a plurality of ferrules 9 are held within a vibratory plate 22. The vibratory plate 22 operates to align and transfer the ferrules 9 to the channels 21. The detecting mechanism 10 comprises a detecting head 11, and the detecting head 11 is arranged at one end of the material channel 21.
The two movable conveying blocks are a first conveying block 26 and a second conveying block 27 respectively, the first conveying block 26 is positioned between the two fixed conveying blocks 25, and the power mechanism drives the first conveying block 26 to move. Specifically, the first conveying block 26 moves to expose the lead-out hole 23 or to shield the lead-out hole 23 and connect the two fixed conveying blocks 25.
More specifically, if the guiding-out hole 23 is exposed, the two fixed conveying blocks 25 are not communicated, and the ceramic ferrule 9 cannot pass through the conveying seat 24, but falls into the guiding-out hole 23 to be guided into the material frame under the action of gravity. More specifically, the detecting mechanism 10 is connected to a power mechanism, and the power mechanism drives the second conveying block 27 to move according to the detection result of the detecting mechanism 10.
The fixed transport block 25 interfaces with the jig 1 below the slurry supply assembly 15. If the first conveying block 26 shields the guiding-out hole 23 and connects the two fixing blocks, the ferrule 9 can smoothly pass through the conveying seat 24 and reach the accommodating channel 2 of the fixture 1 below the polishing liquid supply assembly 15.
The power mechanism drives the second conveying block 27 to move, and the moving second conveying block 27 is connected with the material channel 21 and the fixed conveying block 25.
A pushing component 28 is arranged on one side of the conveying seat 24, and the pushing component 28 pushes the ceramic ferrule 9 on the second conveying block 27 to move to the fixed conveying block 25. The ferrule 9, which is originally located on the fixed transport block 25, is pushed into the receiving channel 2 of the fixture 1. Similarly, the qualified ceramic ferrule 9 is gradually introduced into the accommodating channel 2 of the fixture 1. While the unacceptable ferrule 9 is guided out through the guiding-out hole 23 on the conveying seat 24.
In this application, the acceptable ferrules 9 are individually introduced into the fixture 1 below the slurry supply assembly 15. The ferrule 9 is gradually pushed forward, and the polishing liquid supply assembly 15 only needs to be at a preset position to lead out the polishing liquid to the clamp 1 below.
In some embodiments of the present application, the surfaces of the first conveying block 26, the second conveying block 27 and the fixed conveying block 25 are provided with accommodating grooves for accommodating the ceramic cores. Specifically, only one ceramic core can be accommodated in the accommodating groove.
Based on the foregoing embodiment, as shown in fig. 6 to 8, another embodiment is provided, where the accommodating channel 2 is a straight channel, and a longitudinal section of the accommodating channel 2 is adapted to a longitudinal section structure of the ferrule 9; the plurality of ferrules 9 may be arranged in the housing channel 2 along the length direction of the housing channel 2. Unlike the conventional use of clamping assemblies to mount and secure the ferrule 9, the present application employs the receiving channel 2. Because the structure of the accommodating channel 2 is adapted to the ferrule 9, the moving direction of the ferrule 9 is limited after the ferrule 9 enters the accommodating channel 2, specifically speaking, the ferrule 9 can only move along the length direction of the accommodating channel 2 and cannot displace in other directions, and then the fixing of the ferrule 9 in the accommodating channel 2 is realized by limiting the two ends of the accommodating channel 2.
And the accommodating channel 2 can accommodate a plurality of ceramic ferrules 9, namely, the ceramic ferrules 9 can be limited at the same time. Compared with the grinding device for the ceramic ferrule 9 on the market, the grinding device for the ceramic ferrule 9 has the advantages of simple structure and lower cost.
Notch 3 has been seted up on anchor clamps 1 surface, notch 3 set up along the length direction of accommodation channel 2, notch 3 and accommodation channel 2 intercommunication. In this application, the width of notch 3 is less than the width of ferrule 9, and the setting of notch 3 does not influence the spacing of ferrule 9 in anchor clamps 1, and ferrule 9 is located accommodation channel 2 all the time.
In this application, the slurry introduction receiving passage 2 needs to pass through the notch 3. The grinding bit 13 also needs to pass through the notch 3 to act on the ferrule 9.
In this application, the following problems are caused when a plurality of ferrules 9 are placed and ground: the as yet unground ferrule 9 itself may have dimensional molding errors during the molding process. When the ferrules 9 are located in the receiving channel 2, there is a certain height difference between the ferrules 9, and the surface of the ferrules 9 to be processed is the top surface. Then, after the grinding bit 13 is moved and pressed down, it is unavoidable that the grinding bit contacts the ferrule 9 having a higher height, and a gap exists between the grinding bit and the ferrule 9 having a lower height. Then after the grinding head 13 is uniformly ground, the V-groove depths on different ceramic ferrules 9 will have a difference, and the machining precision is not high.
For the above, in some embodiments of the present application, a plurality of elastic members are installed in the fixture 1, the elastic members are in one-to-one correspondence with the ferrules 9 in the accommodating channels 2, and the elastic members provide an upward force to the ferrules 9.
Specifically, the accommodating channel 2 comprises a limiting surface 4, the limiting surface 4 is the top surface of the accommodating channel 2, and the ceramic inner core positioned in the accommodating channel 2 is in contact with the limiting surface 4. Of course, the force with which the ceramic core remains in contact with the stop surface 4 comes from the spring. The limiting surface 4 in the accommodating channel 2 is the reference surface for mounting the ceramic ferrule 9, and the machining precision of the whole ceramic ferrule 9 can be ensured only by ensuring that the limiting surface 4 is parallel to the bottom surface of the grinding head 13.
The side wall of the clamp 1 is provided with an inlet 51, and the inlet 51 is communicated with the accommodating channel 2. The accommodation channel 2 extends in the longitudinal direction thereof and penetrates the side wall of the clip 1. In this application, then, the ferrule 9 is pushed into the receiving channel 2 from the inlet 51 of the fixture 1 into the receiving channel 2.
The side wall of the clamp 1 is provided with an outlet 52, the outlet 52 is communicated with the accommodating channel 2, and the inlet 51 and the outlet 52 are respectively positioned at two ends of the accommodating channel 2. The ferrule 9 located in the receiving channel 2 is led out of the outlet 52.
Two baffle blocks are arranged below the grinding mechanism 12, and when the clamp 1 moves below the grinding mechanism 12, the inlet 51 and the outlet 52 of the clamp 1 are blocked by the two baffle blocks. The length of the grinding channel is just enough to accommodate an integer number of ceramic cores, so that when the inlet 51 and the outlet 52 are blocked, the ceramic cores are fixed in the accommodating channel 2.
When the grinding of the ferrule 9 in the first clamp 1 is completed at the first grinding mechanism 12, the power mechanism drives the clamp assembly to move after the introduction of the ferrule 9 in the second clamp 1 is completed, and the second clamp 1 is moved to the second grinding mechanism 12 for grinding. While at the same time the first grinding mechanism 12 is moved to a position below the grinding fluid supply assembly 15, i.e., in abutment with the delivery base 24. The conveying seat 24 will continue to convey the ferrule 9 to be processed into the accommodating channel 2 of the first fixture 1, and the ferrule 9 to be processed will eject the polished ferrule 9 originally located in the accommodating channel 2 of the first fixture 1 out of the outlet 52.
Therefore, the polishing liquid supply assembly 15 is provided with a finished frame below, and the finished frame corresponds to the outlet 52 of the accommodating channel 2 below the polishing liquid supply assembly 15.
The present application only sets up the push assembly 28 of material loading, and does not need to set up the power structure and the push structure of unloading. The ceramic inner core is pushed to enter the accommodating channel 2 through the pushing component 28, and the ceramic inner core in the accommodating channel 2 is also ejected out by the pushing component 28. The structure of the device is very simple, and the equipment cost is lower.
At this time, there are the following problems: when the ceramic ferrule 9 is not placed in the accommodating channel 2, the elastic piece in the clamp 1 is not blocked by the ceramic ferrule 9, and the elastic piece can be ejected upwards. The distance between the elastic element and the limiting surface 4 of the receiving channel 2 is not sufficient to accommodate the elastic element.
For the above, in some embodiments of the present application, the elastic member includes a post 6 and a spring 7, the spring 7 is installed below the post 6, and the post 6 acts on the ferrule 9 located in the receiving channel 2. Preferably, the top post 6 is made of a material having a small friction coefficient.
The top column 6 is provided with a guide surface 8. Specifically, the ceramic ferrule 9 applies a pushing force to the guiding surface 8 of the top post 6, so as to drive the ceramic ferrule 9 to move downwards, and a space for the ceramic ferrule 9 to enter is reserved.
Specifically, the top edge of the top post 6 is provided with a chamfer, and the chamfer forms the guide surface 8. The above structure, a columnar structure provided with a chamfer is an easy-to-process structure. Secondly, the top column 6 is movable in the clamp 1, so that the top column 6 is not limited by the movement stroke, and the top column 6 cannot displace in the circumferential direction in the whole movement process. In the present application, the top column 6 is provided with a chamfer, and the chamfer is used as the guide surface 8, so that high reliability of the force guide can be ensured.
In this application, the polishing head 13 has a V-shaped longitudinal section.
The foregoing has outlined rather broadly the principles and embodiments of the present application in order that the detailed description of the invention may be better understood, and in order that the present application may be better understood. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.

Claims (7)

1. Automatic grinder of pottery lock pin, its characterized in that includes:
the clamp assembly is provided with an accommodating channel; the ceramic ferrule can be arranged in the accommodating channel;
the detection mechanism is used for detecting whether the ceramic ferrule is upward in front;
the feeding mechanism is connected with the detection mechanism and used for conveying the ceramic ferrule to be ground to the accommodating channel or the material frame;
the material frame is used for storing ceramic ferrule to be ground;
the two grinding mechanisms are arranged left and right, each grinding mechanism comprises a grinding head connected with a power mechanism, and the power mechanism drives the grinding heads to move up and down and grind;
the grinding fluid supply assembly is internally provided with grinding fluid and is used for providing the grinding fluid for the ceramic ferrule; the grinding fluid supply assembly is positioned between the two grinding mechanisms;
the accommodating channel is a straight channel, and the longitudinal section of the accommodating channel is matched with the longitudinal section structure of the ceramic ferrule; the plurality of ceramic ferrules can be arranged in the accommodating channel along the length direction of the accommodating channel;
the clamp assembly comprises two clamps with a space, the power mechanism drives the clamp assembly to move back and forth between the two grinding mechanisms, and the distance between the two clamps is equal to the distance between the grinding head and the grinding liquid supply assembly;
when the power mechanism drives one clamp to move to the position below the grinding head of the grinding mechanism, the other clamp is positioned below the grinding liquid supply assembly; when one of the clamps moves to the lower part of the grinding head, the grinding head starts to grind under the action of the power mechanism; and the other clamp is positioned below the grinding fluid supply assembly, and the grinding fluid supply assembly supplies grinding fluid to the ceramic ferrule in the other clamp.
2. The automatic grinding device for the ceramic ferrule of claim 1, wherein the feeding mechanism comprises a conveying seat, the conveying seat comprises two fixed conveying blocks and two movable conveying blocks, the conveying seat is provided with a guiding-out hole communicated with the material frame, and the guiding-out hole is positioned between the two fixed conveying blocks.
3. The automatic grinding device of the ceramic ferrule of claim 2, wherein the feeding mechanism comprises a material channel and a vibration disc, the vibration disc is connected with the material channel, and the material channel is connected with the clamp assembly through a conveying seat; the detection mechanism comprises a detection head, and the detection head is arranged at one end of the material channel.
4. The automatic grinding device of the ceramic ferrule according to claim 2, wherein the two movable conveying blocks are a first conveying block and a second conveying block respectively, the first conveying block is positioned between the two fixed conveying blocks, and the power mechanism drives the first conveying block to move; the first conveying block moves to expose the guide hole or shade the guide hole and connect the two fixed conveying blocks.
5. The automated grinding apparatus of claim 4, wherein the power mechanism moves the second transport block, the moving second transport block connecting the material channel and the fixed transport block.
6. The automated grinding apparatus of claim 1, wherein the fixture surface defines a slot, the slot being disposed along a length of the receiving channel, the slot being in communication with the receiving channel.
7. The automated grinding device of the ferrule of claim 6, wherein a plurality of elastic members are mounted in the fixture, the elastic members are in one-to-one correspondence with the ferrule in the receiving channel, and the elastic members provide an upward force to the ferrule; the accommodating channel comprises a limiting surface, the limiting surface is the top surface of the accommodating channel, and the ceramic inner core positioned in the accommodating channel is in contact with the limiting surface.
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Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62203746A (en) * 1986-03-03 1987-09-08 Nippon Telegr & Teleph Corp <Ntt> Grinding device for end surface of optical fiber connector
CN103802019A (en) * 2014-01-16 2014-05-21 宁波宁创自动化设备有限公司 Automatic judging and regulating mechanism of feeding direction of ceramic inserting core machining unit
CN203643647U (en) * 2014-01-07 2014-06-11 集安市经纬天宇光电科技有限公司 Semi-automatic optical fiber insertion core inner diameter processing machine
CN204471182U (en) * 2015-03-06 2015-07-15 深圳市米椒光科技有限公司 A kind of ceramic insertion core inside diameter grinder with novel loading and unloading structure
CN204773081U (en) * 2015-05-25 2015-11-18 昆山迎翔光电科技有限公司 A clamping anchor clamps for processing ceramic lock pin hole
CN107378757A (en) * 2017-08-10 2017-11-24 东莞市翔通光电技术有限公司 A kind of ceramic insertion core automatic tray filler
CN206677700U (en) * 2017-05-11 2017-11-28 黄石晨信光电股份有限公司 A kind of ceramic insertion core Full-automatic chamfering cuts leader
CN207415096U (en) * 2017-11-24 2018-05-29 宁波容大光电科技有限公司 The inner hole grinder of ceramic insertion core
CN207882177U (en) * 2018-01-31 2018-09-18 台州钧威机械有限公司 Ceramic insertion core apparent visual detection machine
CN208438210U (en) * 2018-06-25 2019-01-29 湖南中科光电有限公司 Ceramic insertion core internal diameter processes lapping liquid filling apparatus
CN110744441A (en) * 2019-11-15 2020-02-04 深圳市光凡通讯技术有限公司 Bare lock pin abrasive disc of optic fibre pottery
CN111390670A (en) * 2020-04-01 2020-07-10 东莞市翔通光电技术有限公司 Ceramic ferrule grinding processing method, equipment and storage medium
CN111730448A (en) * 2020-07-02 2020-10-02 浙江西比通信科技有限公司 Automatic chamfering machine for ceramic bushing and control method thereof
CN111833324A (en) * 2020-07-09 2020-10-27 中国计量大学 Optical fiber ferrule defect detection method based on deep learning
CN215942553U (en) * 2021-10-22 2022-03-04 宁波松迅科技有限公司 Ceramic ferrule grinding device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105437041A (en) * 2014-08-18 2016-03-30 泰科电子(上海)有限公司 Polishing device

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62203746A (en) * 1986-03-03 1987-09-08 Nippon Telegr & Teleph Corp <Ntt> Grinding device for end surface of optical fiber connector
CN203643647U (en) * 2014-01-07 2014-06-11 集安市经纬天宇光电科技有限公司 Semi-automatic optical fiber insertion core inner diameter processing machine
CN103802019A (en) * 2014-01-16 2014-05-21 宁波宁创自动化设备有限公司 Automatic judging and regulating mechanism of feeding direction of ceramic inserting core machining unit
CN204471182U (en) * 2015-03-06 2015-07-15 深圳市米椒光科技有限公司 A kind of ceramic insertion core inside diameter grinder with novel loading and unloading structure
CN204773081U (en) * 2015-05-25 2015-11-18 昆山迎翔光电科技有限公司 A clamping anchor clamps for processing ceramic lock pin hole
CN206677700U (en) * 2017-05-11 2017-11-28 黄石晨信光电股份有限公司 A kind of ceramic insertion core Full-automatic chamfering cuts leader
CN107378757A (en) * 2017-08-10 2017-11-24 东莞市翔通光电技术有限公司 A kind of ceramic insertion core automatic tray filler
CN207415096U (en) * 2017-11-24 2018-05-29 宁波容大光电科技有限公司 The inner hole grinder of ceramic insertion core
CN207882177U (en) * 2018-01-31 2018-09-18 台州钧威机械有限公司 Ceramic insertion core apparent visual detection machine
CN208438210U (en) * 2018-06-25 2019-01-29 湖南中科光电有限公司 Ceramic insertion core internal diameter processes lapping liquid filling apparatus
CN110744441A (en) * 2019-11-15 2020-02-04 深圳市光凡通讯技术有限公司 Bare lock pin abrasive disc of optic fibre pottery
CN111390670A (en) * 2020-04-01 2020-07-10 东莞市翔通光电技术有限公司 Ceramic ferrule grinding processing method, equipment and storage medium
CN111730448A (en) * 2020-07-02 2020-10-02 浙江西比通信科技有限公司 Automatic chamfering machine for ceramic bushing and control method thereof
CN111833324A (en) * 2020-07-09 2020-10-27 中国计量大学 Optical fiber ferrule defect detection method based on deep learning
CN215942553U (en) * 2021-10-22 2022-03-04 宁波松迅科技有限公司 Ceramic ferrule grinding device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陶瓷插芯微孔加工设备的机械结构设计;刘红娟;张舜德;;制造技术与机床(第05期);全文 *

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