CN111890150A - End face pretreatment device and method for small optical fiber ceramic ferrule - Google Patents
End face pretreatment device and method for small optical fiber ceramic ferrule Download PDFInfo
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- CN111890150A CN111890150A CN202010859734.0A CN202010859734A CN111890150A CN 111890150 A CN111890150 A CN 111890150A CN 202010859734 A CN202010859734 A CN 202010859734A CN 111890150 A CN111890150 A CN 111890150A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0084—Other grinding machines or devices the grinding wheel support being angularly adjustable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
Abstract
The invention discloses an end face pretreatment device and method of a small optical fiber ceramic ferrule, wherein the device comprises an automatic feeding and discharging system, a workpiece clamping main shaft system and a grinding main shaft system, wherein the automatic feeding and discharging system is provided with a feeding port and a discharging port for conveying the optical fiber ceramic ferrule from the feeding port to the discharging port, the workpiece clamping main shaft system is arranged at the side edge of the discharging port, and the grinding main shaft system is arranged at one side of the workpiece clamping main shaft system in the horizontal direction; the workpiece clamping main shaft system comprises a workpiece clamping assembly, and the workpiece clamping assembly is used for clamping the optical fiber ceramic inserting core transmitted to the discharge port; the grinding spindle system comprises a horizontal moving platform and a grinding assembly, the grinding assembly is connected to the horizontal moving platform, and the horizontal moving platform is used for driving the grinding assembly to move along the horizontal direction to be close to the end face of the optical fiber ceramic ferrule so as to pretreat the end face of the optical fiber ceramic ferrule. The invention eliminates uncertain factors caused by manual operation and improves the precision and efficiency of end face pretreatment.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to an end face pretreatment device and method for a small optical fiber ceramic ferrule.
Background
The ceramic ferrule is a ceramic cylindrical small tube made of zirconium dioxide by firing, is hard, is the most common and most numerous precise positioning piece in an optical fiber communication network, and is often used for manufacturing optical fiber connectors, optical coupling of devices and the like. The most important function of the ceramic ferrule is to realize the physical butt joint of optical fibers.
In order to ensure low loss when the ferrule transmits signals, the end face of the ferrule needs to be ground, PC (physical contact) grinding is one of the methods, the ferrule has a tiny shape, strict size requirements on PC surface vertex deflection and curvature radius are met, and the ground product has high quality requirements and is precise.
The end face pretreatment processing method of the existing optical fiber ceramic ferrule comprises the following steps: the optical fiber ceramic ferrule is arranged on the grinding tool, so that the grinding tool can simultaneously clamp a plurality of optical fiber ceramic ferrules for end face grinding. Then, the grinding tool is placed on a working disc of a grinding system of the grinding equipment, and the power system drives the working disc to rotate and revolve. Meanwhile, the pressing device is operated manually or manually to press the grinding tool, so that the end face of the optical fiber ceramic ferrule is in contact with a working disc of a grinding system under certain pressure, and the end face of the optical fiber ceramic ferrule is ground by utilizing a grinding sheet on the working disc and the like. The grinding device and the method have the following defects: after the optical fiber ceramic ferrule is ground to a certain degree, a manual pressing grinding tool is needed to ensure that the optical fiber ceramic ferrule has certain grinding pressure, however, such pressing is often difficult to control, so that the end face of the optical fiber ceramic ferrule is not uniformly ground, and the 3D requirement on the end face of the optical fiber ceramic ferrule is difficult to achieve.
The above background disclosure is only for the purpose of assisting understanding of the concept and technical solution of the present invention and does not necessarily belong to the prior art of the present patent application, and should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.
Disclosure of Invention
In order to solve the technical problems, the invention provides an end face pretreatment device and method of a small optical fiber ceramic ferrule, which eliminate uncertain factors caused by manual operation and improve the precision and efficiency of end face pretreatment.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses an end face pretreatment device of a small optical fiber ceramic ferrule, which comprises an automatic feeding and discharging system, a workpiece clamping main shaft system and a grinding main shaft system, wherein the automatic feeding and discharging system is provided with a feeding port and a discharging port and is used for conveying the optical fiber ceramic ferrule to be treated from the feeding port to the discharging port;
the workpiece clamping spindle system comprises a workpiece clamping assembly, and the workpiece clamping assembly is used for clamping the optical fiber ceramic inserting core transmitted to the discharge hole;
the grinding spindle system comprises a horizontal moving platform and a grinding assembly, the grinding assembly is connected to the horizontal moving platform, and the horizontal moving platform is used for driving the grinding assembly to move along the horizontal direction to be close to the end face of the optical fiber ceramic ferrule so as to pretreat the end face of the optical fiber ceramic ferrule.
Preferably, unloading system includes air compressor machine, branch direction vibration dish, transmission pipeline, loading and unloading material unit, storage unit in the automation, branch direction vibration dish passes through transmission pipeline with the discharge gate is linked together, just loading and unloading material unit with storage unit sets up branch direction vibration dish with between the discharge gate, branch direction vibration dish is used for with pending optic fibre pottery lock pin puts according to the predetermined direction feed inlet department, the air compressor machine is used for providing compressed air in order to put according to the predetermined direction optic fibre pottery lock pin along transmission pipeline transmits extremely in the storage unit, loading and unloading material unit connects the storage unit is in order to be used for with in the storage unit optic fibre pottery lock pin transmit extremely discharge gate department and loading and unloading.
Preferably, the workpiece clamping spindle system further comprises a lifting platform, the workpiece clamping assembly is connected to the lifting platform, and the lifting platform is used for driving the workpiece clamping assembly to move in the up-and-down direction; preferably, the workpiece clamping assembly comprises a blowhead, a workpiece spindle and a workpiece chuck, the workpiece spindle is connected to the lifting platform, a through hole is formed in the workpiece spindle, the workpiece chuck is connected to a first end of the through hole, and the blowhead is connected to a second end of the through hole.
Preferably, the grinding assembly comprises a grinding spindle and a grinding wheel, the grinding spindle is connected to the horizontal moving platform, and the grinding wheel is connected to one end of the grinding spindle.
Preferably, the grinding spindle system further comprises an angle adjusting unit, the grinding assembly is connected to the horizontal moving platform through the angle adjusting unit, and the angle adjusting unit is used for adjusting the angle of the horizontal direction of the grinding assembly, so that the axial direction of the grinding assembly and the axial direction of the optical fiber ferrule clamped by the workpiece clamping assembly form a preset angle.
Preferably, the grinding spindle system further comprises a precision feeding assembly, the precision feeding assembly comprises a driving unit and a screw rod unit, the driving unit is used for driving the screw rod unit to move in the horizontal direction, the horizontal moving platform is connected to the screw rod unit, and the direction in which the driving unit drives the screw rod unit to move is the same as the direction in which the horizontal moving platform drives the grinding assembly to move.
Preferably, the small optical fiber ceramic ferrule end face pretreatment device further comprises an exhaust and oil mist filtering system and a cooling and lubricating system, wherein an exhaust port is arranged on the exhaust and oil mist filtering system, an oil outlet is arranged on the cooling and lubricating system, and the exhaust port and the oil outlet are respectively arranged above the grinding spindle system.
The invention also discloses a method for pretreating the end face of the small optical fiber ceramic ferrule by using the pretreatment device for the end face of the small optical fiber ceramic ferrule, which is characterized by comprising the following steps of:
s1: conveying the optical fiber ceramic ferrule to be processed from the feeding port to the discharging port through the automatic feeding and discharging system;
s2: the workpiece clamping assembly clamps the optical fiber ceramic inserting core transmitted to the discharge hole;
s3: the horizontal moving platform drives the grinding assembly to move along the horizontal direction so as to be close to the end face of the optical fiber ceramic ferrule to pretreat the end face of the optical fiber ceramic ferrule.
Preferably, the grinding spindle system further includes an angle adjusting unit, the grinding assembly is connected to the horizontal moving platform through the angle adjusting unit, and the step S3 further includes: the angle of the horizontal direction of the grinding assembly is adjusted through the angle adjusting unit, so that the axial direction of the grinding assembly and the axial direction of the optical fiber ceramic ferrule clamped by the workpiece clamping assembly form a preset angle.
Preferably, the grinding spindle system further includes a precision feeding assembly, the precision feeding assembly includes a driving unit and a screw rod unit, the horizontal moving platform is connected to the screw rod unit, and in step S3, after the horizontal moving platform drives the grinding assembly to move along the horizontal direction so as to be close to the end face of the optical fiber ferrule, the precision feeding assembly further includes that the driving unit drives the screw rod unit to move in the horizontal direction so as to drive the grinding assembly to be attached to the end face of the optical fiber ferrule.
Compared with the prior art, the invention has the beneficial effects that: according to the device and the method for pretreating the end face of the small optical fiber ceramic ferrule, the pressure of the optical fiber ceramic ferrule to be treated does not need to be considered in the grinding process, the side face of the optical fiber ceramic ferrule is pretreated by feeding the grinding assembly in the horizontal direction, wherein the feeding starting position and the feeding ending position of the grinding assembly in the horizontal direction can be accurately controlled, so that uncertain factors caused by manual operation are eliminated, and the precision and the efficiency of end face pretreatment are improved.
In a further scheme, the grinding assembly is fed in the horizontal direction through the horizontal moving platform and the precision feeding assembly in a combined mode, wherein the horizontal moving platform can feed the grinding assembly to the position near the optical fiber ceramic ferrule to be processed, then the horizontal moving platform, the grinding spindle and the grinding wheel are moved gradually in a feeding mode with extremely high precision through the driving unit, the precision machining of the optical fiber ceramic ferrule is achieved, and the precision feeding device is particularly suitable for machining the small cylindrical end of a small optical fiber ceramic ferrule (the optical fiber ceramic ferrule with the outer diameter of 1.0-1.25 mm).
In a further scheme, the grinding assembly can also adjust the angle through the angle adjusting unit, so that the optical fiber ceramic ferrules with different curvature radiuses can be machined.
Drawings
FIG. 1 is a schematic view of a partial structure of an apparatus for pre-treating an endface of a small-sized optical fiber ferrule according to a preferred embodiment of the present invention;
FIG. 2 is a top schematic view of the workholding spindle system and grinding spindle system of FIG. 1;
FIG. 3 is another schematic view showing a configuration of a portion of the apparatus for pretreating an end surface of a small-sized optical fiber ferrule according to the preferred embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the embodiments of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for either a fixing function or a circuit connection function.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
As shown in fig. 1, a preferred embodiment of the present invention discloses an end face pretreatment device for a small optical fiber ferrule, which includes an automatic loading and unloading system 10, a workpiece clamping spindle system 20 and a grinding spindle system 30, wherein the automatic loading and unloading system 10 is provided with a feeding port 11 and a discharging port 12, the automatic loading and unloading system 10 is used for conveying an optical fiber ferrule 60 to be treated from the feeding port 11 to the discharging port 12, the workpiece clamping spindle system 20 is disposed at a side edge of the discharging port 12, and the grinding spindle system 30 is disposed at one side of the workpiece clamping spindle system 20 in a horizontal direction.
The automatic loading and unloading system 10 comprises an air compressor (not shown), a directional vibration disk 13, a transmission pipeline 14, a loading and unloading unit 15 and a storage unit 16, wherein the directional vibration disk 13 is communicated with a discharge port 12 through the transmission pipeline 14, the loading and unloading unit 15 and the storage unit 16 are arranged between the directional vibration disk 13 and the discharge port 12, the directional vibration disk 13 is used for arranging and automatically feeding the optical fiber ceramic ferrule 60 to be processed one by one, and a processing end recognizer of a workpiece is arranged on the directional vibration disk to judge and operate the optical fiber ceramic ferrule 60 to be processed, so that the optical fiber ceramic ferrule 60 to be processed is placed at a feeding port 11 according to a preset direction; the specific processing end identifier can be an infrared sensor arranged at the outlet of the directional vibration disk 13, the front end and the rear end of the optical fiber ceramic ferrule 60 can be identified, if the direction is correct, the optical fiber ceramic ferrule is fed into the material inlet 11, and if the direction is wrong, the optical fiber ceramic ferrule rebounds to the directional vibration disk 13; the air compressor is used for providing compressed air to convey the optical fiber ceramic ferrules 60 arranged in the preset direction to the storage unit 16 along the conveying pipeline, the material handling unit 15 is connected with the storage unit 16 and used for conveying the optical fiber ceramic ferrules 60 in the storage unit 16 to the discharge hole 12 for handling, wherein the storage unit 16 can be provided with a hole to accommodate the optical fiber ceramic ferrules 60 arranged in the preset direction. The automatic feeding and discharging system 10 can automatically feed materials, has high processing speed and can realize automatic mass production.
The workpiece clamping spindle system 20 comprises a lifting platform 21 and a workpiece clamping assembly, the workpiece clamping assembly comprises a workpiece spindle 22, a workpiece chuck 23 and a blowing head 24, the workpiece spindle 22 is connected to the lifting platform 21, and the lifting platform 21 is used for driving the workpiece spindle 22 to move up and down along the Z axis; a workpiece spindle 22 is provided with a through hole along the axial direction, a workpiece chuck 23 is connected to a first end of the through hole, and a blowhead 24 is connected to a second end of the through hole; the fiber ceramic ferrule 60 transmitted to the discharge port 12 is loaded to the workpiece chuck 23 to be clamped by the workpiece chuck 23, the workpiece spindle 22 rotates to drive the workpiece chuck 23 loaded with the fiber ceramic ferrule 60 to rotate, and the blowing head 24 may be connected to an air compressor to blow out the pretreated fiber ceramic ferrule 60. In a further scheme, a probe is arranged beside the workpiece chuck 23 to serve as an automatic detection unit, so that the length of the pretreated optical fiber ceramic ferrule 60 can be automatically detected.
The grinding spindle system 30 comprises a horizontal moving platform 31, a grinding assembly and a precision feeding assembly, wherein the grinding assembly comprises a grinding spindle 32 and a grinding wheel 33, the precision feeding assembly comprises a driving unit 34 and a screw rod unit 35, the grinding spindle 32 is connected to the horizontal moving platform 31, the horizontal moving platform 31 is used for driving the grinding spindle 32 to move along the horizontal direction (for example, the X-axis direction), and the grinding wheel 33 is connected to one end of the grinding spindle 32; the driving unit 34 is configured to drive the lead screw unit 35 to move in a horizontal direction (the same direction as the horizontal moving platform 31 drives the grinding spindle 32 to move, for example, the X-axis direction), and the horizontal moving platform 31 is connected to the lead screw unit 35, where the direction in which the driving unit 34 drives the lead screw unit 35 to move is the same as the direction in which the horizontal moving platform 31 drives the grinding spindle 32 to move, and both are for enabling the grinding wheel 33 to be close to the end face of the optical fiber ferrule 60 clamped by the workpiece chuck 23 to perform pretreatment on the end face of the optical fiber ferrule 60, and during the pretreatment, the grinding spindle 32 rotates to drive the grinding wheel 33 to rotate, and the grinding wheel 33 grinds the small cylindrical end face of the optical fiber ferrule 60. Further, in the present embodiment, the grinding spindle system 30 further includes an angle adjusting unit (not shown), the grinding spindle 32 is connected to the horizontal moving platform 31 through the angle adjusting unit, and the angle of the horizontal direction of the grinding spindle 32 can be adjusted through the angle adjusting unit so that the axial direction of the grinding spindle 32 forms an angle α with the axial direction of the workpiece spindle 22, as shown in fig. 2, specifically, the angle α can be adjusted within a range of ± 30 °.
Wherein in a particular embodiment, the grinding stone on grinding wheel 33 is concave to grind the end face of fiber ferrule 60 into a curved surface. The grinding stone on the grinding wheel 33 is prepared by smelting low-temperature ceramic bond with silicon trioxide, aluminum oxide and magnesium oxide as main materials, mixing the materials uniformly at a temperature of below 700 ℃, smelting the mixture into glass bodies at a high temperature of 1400 ℃, cooling, crushing, grinding into powder, sieving and sorting the powder with a particle size of about 200 meshes, and drying for later use; the specific manufacturing process sequentially comprises the steps of material preparation, material mixing, pressing, drying, low-temperature sintering, inspection, finished product machining, bonding and finishing, and the grinding stone prepared by the preparation process has the advantages that the service life can be prolonged, and the structural size meets the end face pretreatment of the optical fiber ferrule.
As shown in fig. 3, the apparatus for pre-treating the end face of the small optical fiber ferrule of the present invention further includes an exhaust and oil mist filtering system 40 and a cooling and lubricating system 50, wherein the exhaust and oil mist filtering system 40 is provided with an exhaust port 41, the cooling and lubricating system 50 is provided with an oil outlet 51, and the exhaust port 41 and the oil outlet 51 are respectively disposed above the grinding spindle system 30, so that during the grinding process of the small cylindrical end face of the optical fiber ferrule 60, the lubricating oil in the cooling and lubricating system 50 is provided to the machining positions of the optical fiber ferrule 60 and the grinding wheel 33 through the oil outlet 51, and the surplus lubricating oil and the atomized oil mist are recovered by the exhaust and oil mist filtering system 40 through the exhaust port 41 and reused. Wherein the cooling and lubricating system 50 in the present embodiment is provided with an air compressor for providing compressed air to the automatic feeding and discharging system and connecting the blowhead 24 to provide blowing out and collecting of the compressed air and the work pieces. By using the exhaust and oil mist filtering system 40 in combination with the cooling and lubricating system 50, a large amount of dust can be prevented from entering the inner hole, and the difficulty in cleaning the inner hole is reduced.
The method for pretreating the end face of the small optical fiber ceramic ferrule by adopting the end face pretreatment device of the small optical fiber ceramic ferrule of the preferred embodiment of the invention comprises the following steps:
s1: the optical fiber ceramic ferrule 60 to be processed is conveyed from the feeding port to the discharging port through the automatic feeding and discharging system 10;
firstly, the fiber ceramic ferrule 60 to be processed is placed at the material inlet 11 according to a predetermined direction by the directional vibrating disk 13, the air compressor provides compressed air to transmit the fiber ceramic ferrule 60 placed according to the predetermined direction to the hole of the material storage unit 16 along the transmission pipeline, and the material handling unit 15 drives the fiber ceramic ferrule 60 in the material storage unit 16 to be transmitted to the material outlet 12 and to be handled to the workpiece chuck 23.
S2: the workpiece clamping assembly clamps the optical fiber ceramic inserting core transmitted to the discharge port;
the workpiece chuck 23 clamps the fiber ferrule 60 in a predetermined direction such that the side of the fiber ferrule 60 to be pretreated faces outward.
S3: the horizontal moving platform 31 drives the grinding assembly to move in a horizontal direction to abut against the endface of the fiber ferrule 60 to precondition the endface of the fiber ferrule 60.
The horizontal moving platform 31 moves the grinding spindle 32 towards the direction close to the workpiece chuck 23 until the grinding wheel 33 is close to the end face of the fiber ceramic ferrule 60; the grinding spindle 32 rotates to drive the grinding wheel 33 to rotate, and meanwhile, the driving unit 34 drives the horizontal moving platform 31, the grinding spindle 32 and the grinding wheel 33 through the high-precision screw rod unit 35, so that the automatic feeding is realized, and the grinding wheel 33 rotating at high speed grinds the end face of the optical fiber ferrule. After the grinding is finished, compressed air is introduced through the blowing head 24 to blow out the pretreated optical fiber ceramic ferrule.
Before the end face of the optical fiber ferrule is ground, the grinding spindle 32 can be adjusted by the angle adjusting unit, so that the axial direction of the grinding spindle 32 forms an angle α with the axial direction of the workpiece spindle 22, as shown in fig. 2, the angle α can be freely adjusted within a range of ± 30 ° to process workpieces with different curvature radii.
Wherein different end faces of different workpieces can be processed by changing the shape of the grinding wheel 33 and the angle alpha of the grinding spindle 32; the machining requirements of the spherical surface of the end face of the small cylinder end, the inner hole of the end face and the chamfer angle of the inner hole of the end face of the workpiece are met by replacing the grinding wheel and adjusting the angle alpha; in addition, the size of the inner hole of the workpiece chuck 23 is changed, so that workpieces with different diameters can be machined.
By the pretreatment method, the curvature radius of the pretreated optical fiber ceramic ferrule 60 can be ensured to be 12-23 mm, the vertex deviation is less than or equal to 50 microns, and the length tolerance of the ferrule is 40 microns.
As shown in fig. 1, the discharge port 12 of the automatic loading and unloading system 10 is disposed between the workpiece clamping spindle system 20 and the grinding spindle system 30, and when the grinding spindle system 30 moves toward the workpiece clamping spindle system 20 along the X-axis direction, the discharge port of the automatic loading and unloading system 10 may be blocked therebetween, in one way, the discharge port 12 of the automatic loading and unloading system 10 may rotate in the horizontal direction to rotate to a position where the discharge port is not blocked between the workpiece clamping spindle system 20 and the grinding spindle system 30, in another way, the discharge port 12 of the automatic loading and unloading system 10 may move in the up-and-down direction to move upward to a position where the discharge port is not blocked between the workpiece clamping spindle system 20 and the grinding spindle system 30; the specific arrangement and movement between the systems are not limited to the arrangement and movement for attaching and detaching the fiber ferrule 60 of the discharge port 12 to and from the work position of the workpiece chuck 23 and for bringing the grinding spindle system 30 close to the workpiece clamping spindle system 20.
According to the method for pretreating the end face of the optical fiber ceramic ferrule, the traditional manual process method of swinging, clamping and grinding paper grinding is cancelled, the processing method of automatic clamping and grinding stone automatic grinding is adopted instead, the pressure of the optical fiber ceramic ferrule to be treated does not need to be considered in the grinding process, the side face of the optical fiber ceramic ferrule is pretreated by feeding the grinding assembly in the horizontal direction, the automation degree is high, the processing precision is high, the work efficiency is high, the processing method is feasible, the method is particularly suitable for processing the small cylindrical end of the small optical fiber ceramic ferrule (the optical fiber ceramic ferrule with the outer diameter of 1.0-1.25 mm), the defects of instability and nonuniformity caused by manual operation are avoided, and the method has the advantages of accurate control, high precision, safety and reliability; but also reduces the difficulty of cleaning the inner hole.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the invention, and all the properties or uses are considered to be within the scope of the invention.
Claims (10)
1. The end face pretreatment device for the small optical fiber ceramic ferrule is characterized by comprising an automatic feeding and discharging system, a workpiece clamping main shaft system and a grinding main shaft system, wherein the automatic feeding and discharging system is provided with a feeding port and a discharging port and is used for conveying the optical fiber ceramic ferrule to be treated from the feeding port to the discharging port;
the workpiece clamping spindle system comprises a workpiece clamping assembly, and the workpiece clamping assembly is used for clamping the optical fiber ceramic inserting core transmitted to the discharge hole;
the grinding spindle system comprises a horizontal moving platform and a grinding assembly, the grinding assembly is connected to the horizontal moving platform, and the horizontal moving platform is used for driving the grinding assembly to move along the horizontal direction to be close to the end face of the optical fiber ceramic ferrule so as to pretreat the end face of the optical fiber ceramic ferrule.
2. The apparatus for pre-processing the endface of a small form factor fiber ferrule of claim 1, the automatic feeding and discharging system comprises an air compressor, a directional vibration disc, a transmission pipeline, a material loading and unloading unit and a material storage unit, wherein the directional vibration disc is communicated with the discharge port through the transmission pipeline, and the loading and unloading unit and the material storage unit are arranged between the directional vibration disc and the discharge hole, the direction-dividing vibration disk is used for placing the optical fiber ceramic ferrule to be processed at the material inlet according to a preset direction, the air compressor is used for providing compressed air to transmit the optical fiber ceramic ferrules placed in a preset direction to the storage unit along the transmission pipeline, the loading and unloading unit is connected with the storage unit and is used for transmitting the optical fiber ceramic ferrule in the storage unit to the discharge port and loading and unloading.
3. The apparatus of claim 1, wherein the workpiece clamping spindle system further comprises a lifting platform, the workpiece clamping assembly is connected to the lifting platform, and the lifting platform is configured to drive the workpiece clamping assembly to move in an up-and-down direction; preferably, the workpiece clamping assembly comprises a blowhead, a workpiece spindle and a workpiece chuck, the workpiece spindle is connected to the lifting platform, a through hole is formed in the workpiece spindle, the workpiece chuck is connected to a first end of the through hole, and the blowhead is connected to a second end of the through hole.
4. The apparatus of claim 1, wherein the grinding assembly comprises a grinding spindle and a grinding wheel, the grinding spindle is connected to the horizontal movable platform, and the grinding wheel is connected to one end of the grinding spindle.
5. The apparatus of claim 1, wherein the grinding spindle system further comprises an angle adjusting unit, the grinding module is connected to the horizontal moving platform through the angle adjusting unit, and the angle adjusting unit is configured to adjust an angle of the grinding module in a horizontal direction so that an axial direction of the grinding module and an axial direction of the optical fiber ferrule clamped by the workpiece clamping module form a predetermined angle.
6. The apparatus of claim 1, wherein the grinding spindle system further comprises a precision feeding assembly, the precision feeding assembly comprises a driving unit and a lead screw unit, the driving unit is used for driving the lead screw unit to move in a horizontal direction, the horizontal moving platform is connected to the lead screw unit, and the driving unit drives the lead screw unit to move in the same direction as the horizontal moving platform drives the grinding assembly to move.
7. The apparatus of claim 1, further comprising an exhaust and oil mist filtering system and a cooling and lubricating system, wherein the exhaust and oil mist filtering system is provided with an exhaust port, the cooling and lubricating system is provided with an oil outlet, and the exhaust port and the oil outlet are respectively disposed above the grinding spindle system.
8. A method of pre-treating the endfaces of miniature fiber ferrules using the apparatus for pre-treating the endfaces of miniature fiber ferrules according to claim 1, comprising the steps of:
s1: conveying the optical fiber ceramic ferrule to be processed from the feeding port to the discharging port through the automatic feeding and discharging system;
s2: the workpiece clamping assembly clamps the optical fiber ceramic inserting core transmitted to the discharge hole;
s3: the horizontal moving platform drives the grinding assembly to move along the horizontal direction so as to be close to the end face of the optical fiber ceramic ferrule to pretreat the end face of the optical fiber ceramic ferrule.
9. The method of claim 8, wherein the grinding spindle system further comprises an angle adjustment unit, the grinding assembly being connected to the horizontal motion platform by the angle adjustment unit, step S3 further comprising: the angle of the horizontal direction of the grinding assembly is adjusted through the angle adjusting unit, so that the axial direction of the grinding assembly and the axial direction of the optical fiber ceramic ferrule clamped by the workpiece clamping assembly form a preset angle.
10. The method of claim 8, wherein the grinding spindle system further comprises a precision feed assembly, the precision feed assembly comprises a driving unit and a lead screw unit, the horizontal moving platform is connected to the lead screw unit, and the step S3 further comprises driving the lead screw unit to move in the horizontal direction by the driving unit to bring the grinding assembly into contact with the end face of the fiber ferrule after the horizontal moving platform drives the grinding assembly to move in the horizontal direction to be close to the end face of the fiber ferrule.
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| CN202010859734.0A CN111890150A (en) | 2020-08-24 | 2020-08-24 | End face pretreatment device and method for small optical fiber ceramic ferrule |
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|---|---|---|---|---|
| CN113414643A (en) * | 2021-06-19 | 2021-09-21 | 贵州航箭电子产品有限公司 | Grinding method of rectangular electric connector |
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